U.S. patent application number 16/694477 was filed with the patent office on 2020-03-19 for prosthetic blade attachment system.
This patent application is currently assigned to NIKE, Inc.. The applicant listed for this patent is NIKE, Inc.. Invention is credited to Patrick D. Boyd, Jessica Green, Michelle Haines, Monica Judge, Gerry Plasker, Richard S. Ramsay, Nicola J. Reynolds.
Application Number | 20200085597 16/694477 |
Document ID | / |
Family ID | 59960562 |
Filed Date | 2020-03-19 |
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United States Patent
Application |
20200085597 |
Kind Code |
A1 |
Green; Jessica ; et
al. |
March 19, 2020 |
Prosthetic Blade Attachment System
Abstract
An attachment system for use with a prosthetic device includes a
first component including a first surface, and further including
one of a channel and a projection disposed on an opposite side of
the first component than the first surface. A second component
including a second surface, and including the other of the channel
and the projection disposed on an opposite side of the second
component than the second surface, the other slidably engaging the
channel or the projection to selectively couple the first component
and the second component together. One of the first surface and the
second surface is operable to be attached to the prosthetic device,
and the other is operable to be attached to a sole structure having
a ground-engaging surface.
Inventors: |
Green; Jessica; (Hillsboro,
OR) ; Haines; Michelle; (Beaverton, OR) ;
Judge; Monica; (Tigard, OR) ; Plasker; Gerry;
(Beaverton, OR) ; Ramsay; Richard S.; (Portland,
OR) ; Reynolds; Nicola J.; (Hillsboro, OR) ;
Boyd; Patrick D.; (Aloha, OR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
NIKE, Inc. |
Beaverton |
OR |
US |
|
|
Assignee: |
NIKE, Inc.
Beaverton
OR
|
Family ID: |
59960562 |
Appl. No.: |
16/694477 |
Filed: |
November 25, 2019 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
15474536 |
Mar 30, 2017 |
10485680 |
|
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16694477 |
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|
62316497 |
Mar 31, 2016 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A61F 2/66 20130101; A61F
2/76 20130101; A61F 2002/5083 20130101; A61F 2002/665 20130101;
A61F 2002/6614 20130101; A61F 2002/6671 20130101; A61F 2002/5072
20130101; A61F 2002/5003 20130101 |
International
Class: |
A61F 2/66 20060101
A61F002/66; A61F 2/76 20060101 A61F002/76 |
Claims
1. A prosthetic device attachment system comprising: a first
component including a first surface attached to a convex,
ground-facing surface proximate a distal end of a prosthetic
device, the first component including one of a channel and a
projection disposed on an opposite side of the first component than
the first surface; and a latch mechanism including a first portion
attached to and extending from the convex, ground-facing surface of
the prosthetic device, the latch mechanism being disposed closer to
a proximal end of the prosthetic device than is the first
component.
2. The prosthetic device attachment system of claim 1, further
comprising a second component including a second surface operable
to be attached to a sole structure having a ground-engaging
surface, the second component including the other of the channel
and the projection disposed on an opposite side of the second
component than the second surface.
3. The prosthetic device attachment system of claim 2, wherein the
other of the channel and the projection slidably engages the one of
the channel and the projection to selectively couple the first
component and the second component together.
4. The prosthetic device attachment system of claim 3, wherein the
latch mechanism is automatically moved into a latched state to fix
the relative position between the first component and the second
component when the projection is moved into the channel a
predetermined distance.
5. The prosthetic device attachment system of claim 2, wherein the
channel and the projection cooperate to selectively provide a
dovetail connection between the first component and the second
component.
6. The prosthetic device attachment system of claim 2, wherein the
sole structure includes a cushioning layer disposed between the
second surface and the ground-engaging surface.
7. The prosthetic device attachment system of claim 6, wherein the
ground-engaging surface is formed by the cushioning layer.
8. The prosthetic device attachment system of claim 6, wherein the
ground-engaging surface is formed by an outsole layer that is
attached to the cushioning layer.
9. The prosthetic device attachment system of claim 2, wherein the
latch mechanism includes a second portion fixed for movement with
the second component, the second portion engaging the first portion
when the latch mechanism is in a latched state.
10. The prosthetic device attachment system of claim 1, wherein the
prosthetic device is one of a foot prosthetic device and a blade
prosthetic device.
11. A prosthetic device attachment system comprising: a first
component including a first surface operable to be attached to a
sole structure having a ground-engaging surface, the first
component including one of a channel and a projection disposed on
an opposite side of the first component than the first surface and
extending along a concave surface of the first component that faces
a convex, ground-facing surface of a prosthetic device; and a latch
mechanism including a first portion attached to and extending from
the convex, ground-facing surface of the prosthetic device, the
latch mechanism being disposed closer to a proximal end of the
prosthetic device than is the first component.
12. The prosthetic device attachment system of claim 11, further
comprising a second component including a second surface attached
to the convex, ground-facing surface proximate a distal end of the
prosthetic device, the second component including the other of the
channel and the projection disposed on an opposite side of the
second component than the second surface.
13. The prosthetic device attachment system of claim 12, wherein
the other of the channel and the projection slidably engages the
one of the channel and the projection to selectively couple the
first component and the second component together.
14. The prosthetic device attachment system of claim 13, wherein
the latch mechanism is automatically moved into a latched state to
fix the relative position between the first component and the
second component when the projection is moved into the channel a
predetermined distance.
15. The prosthetic device attachment system of claim 12, wherein
the channel and the projection cooperate to selectively provide a
dovetail connection between the first component and the second
component.
16. The prosthetic device attachment system of claim 12, wherein
the sole structure includes a cushioning layer disposed between the
first surface and the ground-engaging surface.
17. The prosthetic device attachment system of claim 16, wherein
the ground-engaging surface is formed by the cushioning layer.
18. The prosthetic device attachment system of claim 16, wherein
the ground-engaging surface is formed by an outsole layer that is
attached to the cushioning layer.
19. The prosthetic device attachment system of claim 12, wherein
the latch mechanism includes a second portion fixed for movement
with the first component, the second portion engaging the first
portion when the latch mechanism is in a latched state.
20. The prosthetic device attachment system of claim 11, wherein
the prosthetic device is one of a foot prosthetic device and a
blade prosthetic device.
Description
CROSS REFERENCE TO RELATED APPLICATION
[0001] This application claims priority to U.S. application Ser.
No. 15/474,536 filed Mar. 30, 2017 and to U.S. Provisional
Application Ser. No. 62/316,497, filed Mar. 31, 2016, the
disclosures of which are hereby incorporated by reference in their
entirety.
FIELD
[0002] The present disclosure relates to attachment systems and
more particularly to an attachment system for securing to a
prosthetic device a component having a ground-contacting
surface.
BACKGROUND
[0003] This section provides background information related to the
present disclosure and is not necessarily prior art.
[0004] Prosthetic devices are used by amputees to replace all of,
or some portion of, a limb. For example, prosthetic legs may be
used to replace a portion of a person's leg surgically removed at
or above the knee. Such prosthetic devices allow the person to walk
in a conventional manner by supporting the person's weight and, in
some cases, by providing a prosthetic joint at the person's knee
that bends and otherwise mimics operation of a human knee.
Prosthetic legs may be incorporated at one or both of the person's
legs depending on the person's condition.
[0005] Prosthetic legs may be used in conjunction with prosthetic
feet that are designed to replace the foot of the amputee. As with
prosthetic legs, prosthetic feet are designed to allow an amputee
to walk in a conventional manner by supporting the person's weight
during use. Prosthetic feet are sometimes also designed to flex and
bend in an effort to function in a similar manner as a human ankle
and foot.
[0006] One conventional prosthetic foot is a so-called prosthetic
blade that includes a substantially flat member extending from a
distal end of a prosthetic leg. Prosthetic blades are typically
formed from a resilient material that permits the blade to bend and
flex during use while automatically returning to a relaxed state
once an applied force is released. Such bending and flexing of the
prosthetic blade is enhanced by the generally curved shape of the
blade that facilitates bending and flexing when the blade comes in
contact with the ground during use. The foregoing properties of
prosthetic blades allow the blades to absorb energy associated with
ground-contacting forces and, as such, provide an amputee with a
degree of comfort during use. Further, such bending and flexing
provides the amputee with an energy return during walking and
running movements that enhances the performance of the amputee
during such movements.
[0007] While prosthetic blades provide an amputee with the ability
to walk and run, such blades do not typically include a
ground-contacting surface suitable for all potential activities.
Accordingly, prosthetic blades may be fitted with an outsole that
is affixed to the blade using an adhesive to restrict relative
movement between the material of the blade and the material of the
outsole. While such outsoles protect the blade during use and,
further, enhance the traction of the blade with the ground during
some uses, such outsoles are difficult to attach and, further, are
even more difficult to remove. Accordingly, the few outsoles
currently used in conjunction with prosthetic blades cannot be
easily interchanged with one another for use in a particular
activity or with a particular ground surface.
DRAWINGS
[0008] The drawings described herein are for illustrative purposes
only of selected configurations and not all possible
implementations, and are not intended to limit the scope of the
present disclosure.
[0009] FIG. 1 is a perspective view of a prosthetic device;
[0010] FIG. 2 is an exploded perspective view of the prosthetic
device of FIG. 1 showing a first component of an attachment system
separated from a second component of the attachment system;
[0011] FIG. 3A is a side view of the prosthetic device of FIG.
1;
[0012] FIG. 3B is a cross-sectional view of the prosthetic device
of FIG. 1 taken along line 3B-3B of FIG. 3A;
[0013] FIG. 4A is a perspective view of a sole structure for use
with the prosthetic device of FIG. 1;
[0014] FIG. 4B is a perspective view of a sole structure for use
with the prosthetic device of FIG. 1;
[0015] FIG. 4C is a perspective view of a sole structure for use
with the prosthetic device of FIG. 1;
[0016] FIG. 5A is a top view of a latch mechanism for use with the
prosthetic device of FIG. 1 shown in an unlatched state;
[0017] FIG. 5B is a top view of the latch mechanism of FIG. 5A
shown in a latched state;
[0018] FIG. 5C is a side view of the latch mechanism of FIG. 5A
shown in a latched state;
[0019] FIG. 6A a partial exploded perspective view of a latch
mechanism for use with the prosthetic device of FIG. 1 shown in an
unlatched state;
[0020] FIG. 6B is a top view of the latch mechanism of FIG. 6A
shown in a latched state;
[0021] FIG. 6C is a partial cross-sectional view of the latch
mechanism of FIG. 6A taken along line 6C-6C of FIG. 6B and shown in
a latched state;
[0022] FIG. 7A a partial exploded perspective view of a latch
mechanism for use with the prosthetic device of FIG. 1 shown in an
unlatched state;
[0023] FIG. 7B is a top view of the latch mechanism of FIG. 7A
shown in a latched state;
[0024] FIG. 7C is a partial cross-sectional view of the latch
mechanism of FIG. 7A taken along line 7C-7C of FIG. 7B and shown in
a latched state;
[0025] FIG. 8A is a partial cross-sectional view of a latch
mechanism for use with the prosthetic device of FIG. 1 shown in an
unlatched state;
[0026] FIG. 8B is a partial cross-sectional view of the latch
mechanism of FIG. 8A moving from an unlatched state toward a
latched state;
[0027] FIG. 8C is a partial cross-sectional view of the latch
mechanism of FIG. 8A shown in a latched state;
[0028] FIG. 9A is a partial cross-sectional view of a latch
mechanism for use with the prosthetic device of FIG. 1 shown in an
unlatched state;
[0029] FIG. 9B is a partial cross-sectional view of the latch
mechanism of FIG. 9A moving from an unlatched state toward a
latched state;
[0030] FIG. 9C is a partial cross-sectional view of the latch
mechanism of FIG. 9A shown in a latched state;
[0031] FIG. 10A is a top view of a latch mechanism for use with the
prosthetic device of FIG. 1;
[0032] FIG. 10B is a partial cross-sectional view of the latch
mechanism of FIG. 10A moving from an unlatched state toward a
latched state;
[0033] FIG. 10C is a partial cross-sectional view of the latch
mechanism of FIG. 10A in a latched state;
[0034] FIG. 11A a top view of a latch mechanism for use with the
prosthetic device of FIG. 1 shown in an unlatched state;
[0035] FIG. 11B is a top view of the latch mechanism of FIG. 11B
shown in a latched state;
[0036] FIG. 11C is a partial cross-sectional view of the latch
mechanism of FIG. 11A taken along line 11C-11C of FIG. 11B and
shown in the latched state;
[0037] FIG. 12A is a top view of a latch mechanism for use with the
prosthetic device of FIG. 1 shown in an unlatched state;
[0038] FIG. 12B is a top view of the latch mechanism of FIG. 12A
shown in a latched state;
[0039] FIG. 13A is a top view of a latch mechanism for use with the
prosthetic device of FIG. 1 shown in an unlatched state;
[0040] FIG. 13B is a top view of the latch mechanism of FIG. 13A
shown in a latched state;
[0041] FIG. 14A is a partial cross-sectional view of a latch
mechanism for use with the prosthetic device of FIG. 1 shown in an
unlatched state;
[0042] FIG. 14B is a partial cross-sectional view of the latch
mechanism of FIG. 14A moving from an unlatched state toward a
latched state;
[0043] FIG. 14C is a partial cross-sectional view of the latch
mechanism of FIG. 14A shown in a latched state;
[0044] FIG. 15A is a partial cross-sectional view of a latch
mechanism for use with the prosthetic device of FIG. 1 shown in an
unlatched state;
[0045] FIG. 15B is a partial cross-sectional view of the latch
mechanism of FIG. 15A moving from an unlatched state toward a
latched state;
[0046] FIG. 15C is a partial cross-sectional view of the latch
mechanism of FIG. 15A shown in a latched state;
[0047] FIG. 16A is a partial cross-sectional view of a latch
mechanism for use with the prosthetic device of FIG. 1 shown in an
unlatched state;
[0048] FIG. 16B is a partial cross-sectional view of the latch
mechanism of FIG. 16A shown in a latched state;
[0049] FIG. 17A is a top view of a latch mechanism for use with the
prosthetic device of FIG. 1 shown in an unlatched state;
[0050] FIG. 17B is a top view of the latch mechanism of FIG. 17A
shown in a latched state;
[0051] FIG. 18A is a top view of a latch mechanism for use with the
prosthetic device of FIG. 1 shown in an unlatched state;
[0052] FIG. 18B is a top view of the latch mechanism of FIG. 18A
shown in a latched state;
[0053] FIG. 19A is a partial cross-sectional view of a latch
mechanism for use with the prosthetic device of FIG. 1 shown in an
unlatched state; and
[0054] FIG. 19B is a partial cross-sectional view of the latch
mechanism of FIG. 19A shown in a latched state.
[0055] Corresponding reference numerals indicate corresponding
parts throughout the drawings.
DETAILED DESCRIPTION
[0056] Example configurations will now be described more fully with
reference to the accompanying drawings. Example configurations are
provided so that this disclosure will be thorough, and will fully
convey the scope of the disclosure to those of ordinary skill in
the art. Specific details are set forth such as examples of
specific components, devices, and methods, to provide a thorough
understanding of configurations of the present disclosure. It will
be apparent to those of ordinary skill in the art that specific
details need not be employed, that example configurations may be
embodied in many different forms, and that the specific details and
the example configurations should not be construed to limit the
scope of the disclosure.
[0057] The terminology used herein is for the purpose of describing
particular exemplary configurations only and is not intended to be
limiting. As used herein, the singular articles "a," "an," and
"the" may be intended to include the plural forms as well, unless
the context clearly indicates otherwise. The terms "comprises,"
"comprising," "including," and "having," are inclusive and
therefore specify the presence of features, steps, operations,
elements, and/or components, but do not preclude the presence or
addition of one or more other features, steps, operations,
elements, components, and/or groups thereof. The method steps,
processes, and operations described herein are not to be construed
as necessarily requiring their performance in the particular order
discussed or illustrated, unless specifically identified as an
order of performance. Additional or alternative steps may be
employed.
[0058] When an element or layer is referred to as being "on,"
"engaged to," "connected to," "attached to," or "coupled to"
another element or layer, it may be directly on, engaged,
connected, attached, or coupled to the other element or layer, or
intervening elements or layers may be present. In contrast, when an
element is referred to as being "directly on," "directly engaged
to," "directly connected to," "directly attached to," or "directly
coupled to" another element or layer, there may be no intervening
elements or layers present. Other words used to describe the
relationship between elements should be interpreted in a like
fashion (e.g., "between" versus "directly between," "adjacent"
versus "directly adjacent," etc.). As used herein, the term
"and/or" includes any and all combinations of one or more of the
associated listed items.
[0059] The terms first, second, third, etc. may be used herein to
describe various elements, components, regions, layers and/or
sections. These elements, components, regions, layers and/or
sections should not be limited by these terms. These terms may be
only used to distinguish one element, component, region, layer or
section from another region, layer or section. Terms such as
"first," "second," and other numerical terms do not imply a
sequence or order unless clearly indicated by the context. Thus, a
first element, component, region, layer or section discussed below
could be termed a second element, component, region, layer or
section without departing from the teachings of the example
configurations.
[0060] An attachment system for use with a prosthetic device is
provided. The attachment system includes a first component
including a first surface, and further including one of a channel
and a projection disposed on an opposite side of the first
component than the first surface. The system also includes a second
component including a second surface, and further including the
other of the channel and the projection disposed on an opposite
side of the second component than the second surface, the other of
the channel and the projection slidably engaging the one of the
channel and the projection to selectively couple the first
component and the second component together. One of the first
surface and the second surface is operable to be attached to the
prosthetic device, and the other of the first surface and the
second surface is operable to be attached to a sole structure
having a ground-engaging surface.
[0061] Implementations of the disclosure may include one or more of
the following optional features. In some implementations, the
channel matingly receives the projection therein. The projection
may include a first portion that is disposed at a junction of the
prosthetic device and the one of the first surface and the second
surface and a second portion that is spaced apart from the first
portion and is received by the channel, whereby the projection has
a cross-section that is wider at the second portion than at the
first portion to restrict removal of the projection from the
channel. The channel and the projection may cooperate to
selectively provide a dovetail connection between the first
component and the second component.
[0062] The sole structure may include a cushioning layer disposed
between the other of the first surface and the second surface and
the ground-engaging surface. In some examples, the ground-engaging
surface is formed by the cushioning layer. The ground-engaging
surface may be formed by an outsole layer that is attached to the
cushioning layer.
[0063] In some implementations, the attachment system includes a
latch mechanism operable to fix a relative position between the
first component and the second component. The latch mechanism may
be automatically moved into a latched state to fix the relative
position between the first component and the second component when
the projection is moved into the channel a predetermined distance.
The latch mechanism may include a male component that is fixed for
movement with one of the first component and the second component
and a female component that is fixed for movement with the other of
the first component and the second component, the female component
receiving the male component and securing the male component to the
female component when the projection is moved the predetermined
distance into the channel. The latch mechanism may also include a
latching element fixed for movement with one of the first component
and the second component, and further includes a latching feature
fixed for movement with the other of the first component and the
second component, the latching element operable to be actuated by
and to engage the latching feature in response to a sliding
engagement between the first component and the second component.
The other of the first component and the second component may
include a ramping surface operable to deflect the latching element
and to position the latching element into engagement with the
latching feature in response to the one of the first component and
the second component slidingly engaging with the other of the first
component and the second component.
[0064] In some examples, the prosthetic device is a foot prosthetic
device or the prosthetic device may be a blade prosthetic device.
The first component and the second component may be elongated
components.
[0065] Another aspect of the disclosure provides an attachment
system for use with a prosthetic device. The attachment includes a
first elongate component attached to the prosthetic device and a
second elongate component attached to a sole structure having a
ground-engaging surface. The second elongate component slidably
engages the first elongate component to attach the sole structure
to the prosthetic device.
[0066] This aspect may include one or more of the following
optional features. In some implementations, the second elongate
component matingly receives the first elongate component therein.
The first elongate component may include a projection extending
from a surface of the prosthetic device. The projection may include
a first portion disposed at a junction of the projection and the
surface of the prosthetic device and a second portion that is
spaced apart from the first portion and is received by a channel. A
cross-section of the projection may be wider at the second portion
than at the first portion. The channel and the projection may
cooperate to selectively provide a dovetail connection between the
first elongate component and the second elongate component. In some
examples, the sole structure includes a cushioning layer disposed
between the second elongate component and the ground-engaging
surface. The ground-engaging surface may be formed by the
cushioning layer. The ground-engaging surface may be formed by an
outsole layer that is attached to the cushioning layer.
[0067] In some implementations, the attachment system includes a
latch mechanism operable to selectively fix a relative position
between the first elongate component and the second elongate
component. The latch mechanism may be automatically moved into a
latched state to fix the relative position between the first
elongate component and the second elongate component when the first
elongate component is moved into the second elongate component a
predetermined distance. The latch mechanism may include a male
component that is fixed for movement with one of the first elongate
component and the second elongate component, and further includes a
female component that is fixed for movement with the other of the
first elongate component and the second elongate component. The
female component may receive the male component and secure the male
component to the female component when the first elongate component
is moved the predetermined distance into the second elongate
component. In some examples, the latch mechanism includes a
latching element fixed for movement with one of the first elongate
component and the second elongate component, and a latching feature
fixed for movement with the other of the first elongate component
and the second elongate component. The latching element may be
operable to be moved relative to the one of the first elongate
component and the second elongate component to engage the latching
feature.
[0068] In some examples, the other of the first elongate component
and the second elongate component includes a ramping surface
operable to deflect the latching element and to position the
latching element into engagement with the latching feature. The
prosthetic device may be a foot prosthetic device. The prosthetic
device may be a blade prosthetic device, in some examples. The
first elongate component may be integrally formed with the
prosthetic device.
[0069] Yet another aspect of the disclosure provides an attachment
system for a prosthetic device. The attachment system includes a
first component attached to the prosthetic device and including a
first latch mechanism, and a second component selectively
attachable to the first component. The second component includes a
second latch mechanism and a ground-engaging surface. The second
latch mechanism is configured and disposed to latchingly engage
with the first latch mechanism when the first component is moved a
predetermined distance relative to the second component in a first
direction.
[0070] This aspect may include one or more of the following
optional features. In some implementations, the second latch
mechanism is disposed on an opposite side of the second component
than the ground-engaging surface. The second component may be
slidably attached to the first component. The first component may
include one of a projection and a channel and the second component
includes the other of the projection and the channel. The channel
may receive the projection to guide movement of the first component
relative to the second component.
[0071] In some examples, the projection is matingly received by the
channel and is permitted to slide relative to and within the
channel to permit movement of the first component relative to the
second component in the first direction. The projection may include
a first end that is attached to one of the first component and the
second component and a second end that is spaced apart from the
first end and is received by the channel of the other of the first
component and the second component. The projection may have a
cross-section that increases in width from the first end to the
second end to restrict removal of the projection from the channel.
A second portion may include a cushioning layer disposed between
the prosthetic device and the ground-engaging surface. In some
examples, the ground-engaging surface is formed by the cushioning
layer. The ground-engaging surface may be formed by an outsole
layer that is attached to the cushioning layer.
[0072] In some examples, the first latch mechanism includes one of
a male component and a female component that is fixed for movement
with the first component. The second latch mechanism may include
the other of the male component and the female component, the
female component being fixed for movement with the second component
and may receive the male component to secure the male component to
the female component when the first component is moved the
predetermined distance in the first direction.
[0073] Yet another aspect of the disclosure provides an attachment
system for a prosthetic device. The attachment system includes a
first component fixed for movement with the prosthetic device and a
second component that matingly receives the first component and
includes a ground-engaging surface. The second component is
automatically secured to the first component when the first
component is moved a predetermined distance relative to the second
component in a first direction.
[0074] This aspect may include one or more of the following
optional features. In some implementations, the first component
includes a first latch mechanism and the second component includes
a second latch mechanism. The second latch mechanism may engage the
first latch mechanism when the first component is moved the
predetermined distance relative to the second component in the
first direction. The first latch mechanism may include one of a
male component and a female component that is fixed for movement
with the first component and the second latch mechanism includes
the other of the male component and the female component. The
female component may be fixed for movement with the second
component and may receive the male component to secure the male
component to the female component when the first component is moved
the predetermined distance in the first direction. The second latch
mechanism may be disposed on an opposite side of the second
component than the ground-engaging surface. The second component
may be slidably attached to the first component. In some examples,
the first component includes one of a projection and a channel and
the second component includes the other of the projection and the
channel. The channel may receive the projection to guide movement
of the first component relative to the second component.
[0075] In some implementations, the projection is matingly received
by the channel and is permitted to slide relative to and within the
channel to permit movement of the first component relative to the
second component in the first direction. The projection may include
a first end that is attached to one of the first component and the
second component and a second end that is spaced apart from the
first end and is received by the channel of the other of the first
component and the second component. The projection may have a
cross-section that increases in width from the first end to the
second end to restrict removal of the projection from the channel.
In some examples, the second component includes a cushioning layer,
the cushioning layer being disposed between the prosthetic device
and the ground-engaging surface. The ground-engaging surface may be
formed by the cushioning layer. The ground-engaging surface may
also be formed by an outsole layer that is attached to the
cushioning layer.
[0076] With reference to the figures, an attachment system 10 for
use with a prosthetic device 12 is provided. The prosthetic device
10 may be a foot prosthetic device and, further, may be a so-called
prosthetic "blade" that may be attached to a lower portion of a
person's leg. For example, the prosthetic blade 12 may be attached
to a distal end of a prosthetic leg and is positioned to provide
the person with support during walking and running movements. While
the prosthetic device 12 could be any prosthetic device, the
prosthetic device 12 will be described hereinafter as being a
prosthetic blade.
[0077] The prosthetic blade 12 includes a proximal end 14 and a
distal end 16 disposed on an opposite end of the prosthetic blade
12 than the proximal end 14. A body portion 18 extends between and
connects the proximal end 14 and the distal end 16. The body
portion 18 includes a generally curved shape and includes a
substantially concave surface 20 and a substantially convex surface
22 disposed on an opposite side of the body portion 18 than the
concave surface 20. The body portion 18 may be formed from metal
and/or carbon fiber. The material of the body portion 18 along with
its generally curved shape allow the prosthetic blade 12 to
function as a spring during use which, in turn, provides a user
with shock absorption and energy return during walking and running
movements.
[0078] The proximal end 14 may include an attachment feature 24 for
use in attaching the prosthetic blade 12 to a person's leg. For
example, the attachment feature 24 may be an aperture that receives
a fastener (not shown) for use in attaching the prosthetic blade 12
to a distal end of a prosthetic leg.
[0079] The attachment system includes a first component 26 and a
second component 28 that cooperate to selectively attach a sole
structure 30 to the prosthetic blade 12. The first component 26 is
shown as being attached to the prosthetic blade 12 while the second
component 28 is shown as being attached to the sole structure 30.
While the first component 26 is shown as being attached to the
prosthetic blade 12 and the second component 28 is shown as being
attached to the sole structure 30, the first component 26 could
alternatively be attached to the sole structure 30 and the second
component 28 could be attached to the prosthetic blade 12.
[0080] The first component 26 includes a rail 32 that projects from
the convex surface 22 of the body portion 18. The rail 32 may be
integrally formed with the body portion 18 of the prosthetic blade
12 or, alternatively, may be fixedly attached to the body portion
18 at the convex surface 22. If the rail 32 is integrally formed
with the body portion 18, the rail may be machined into the shape
shown in FIGS. 2 and 3B. If the rail 32 is separately formed from
the body potion 18, the rail 32 may be attached to the body portion
18 via a mechanical fastener such as a bolt and/or adhesive.
[0081] The rail 32 includes a projection extending from a first end
34 to a second end 36. The first end 34 is disposed adjacent to the
convex surface 22 of the body portion 18 and includes a first width
(W.sub.1). The second end 36 is disposed at an opposite end of the
rail 32 than the first end 34 and includes a second width
(W.sub.2). As shown in FIG. 3B, the second width (W.sub.2) is
larger than the first width (W.sub.1).
[0082] In one configuration, the rail 32 is a tapered projection
that has a constant taper extending from the first end 34 to the
second end 36. Further, the rail 32 includes a substantially planar
surface 38 disposed at the second end 36 and defining a width of
the rail 32 at the second end. A length of the rail 32 extends from
the distal end 16 of the body portion 18 in a direction toward the
proximal end 14 of the body portion 18. The length is greater than
the width and, as such, the rail 32 is an elongate component
extending along a longitudinal axis (L) of the body portion 18.
[0083] The second component 28 includes a main body 40 having a
projection 42 and a flange 44 extending from the projection 42. The
main body 40 is disposed between and connects the first component
26 and the sole structure 30. Because the first component 26 is
attached to the prosthetic blade 12, connecting the first component
26 to the sole structure 30 via the main body 40 likewise connects
the sole structure 30 to the prosthetic blade 12.
[0084] The projection 42 extends in a direction away from the sole
structure 30 toward the first component 26 and includes a channel
46 formed therein. The channel 46 extends along a length of the
second component 28 and in a direction along the longitudinal axis
(L) of the body portion 18 to a similar extent as the first
component 26. As such, the second component 28 is similarly an
elongate component. The channel 46 includes a shape that matingly
receives the profile of the rail 32. Specifically, the channel 46
includes a first end 48 having a first width (W.sub.1) and a second
end 50 having a second with (W.sub.2), whereby the first width
(W.sub.1) is less than the second width (W.sub.2). If the first
component 26 includes a tapered projection, the channel 46 may
likewise include a taper that matches the taper of the first
component 26 to allow the channel 46 to matingly receive the rail
32 of the first component 32. While the first component 26 and the
second component 28 are both described as being elongate
components, the first component 26 and the second component 28 may
have the same length or different lengths. For example, the first
component 26 may include a shorter or longer length than the second
component 28. Further yet, second components 28 having different
lengths may be used with the same first component 26 at different
times to allow the first component 26 to be a universal
component.
[0085] As shown in FIG. 3B, the flange 44 extends outward from the
projection 42 and over the sole structure 30. The flange 44 defines
an outer edge 52 that corresponds generally to an outer edge 54 of
the sole structure 30. As such, the outer edge 52 of the flange 44
is substantially flush with the outer edge 54 of the sole structure
30. While the outer edge 52 is described and shown as being
substantially flush with the outer edge 54, the outer edge 52 could
alternatively be recessed from or extend over the outer edge
54.
[0086] In operation, the channel 46 slidably receives the rail 32
to attach the first component 26 to the second component 28 and,
thus, the sole structure 30 to the prosthetic blade 12. Namely, the
distal end 16 of the prosthetic blade 12 is first inserted into the
channel 46 at an opening 56 of the channel 46 (FIG. 2). The second
component 28 and, thus, the sole structure 30, are moved along and
relative to the rail 32 until the distal end 16 of the prosthetic
blade 12 contacts a stop surface 58 of the second component 28.
Contact between the distal end 16 and the stop surface 58 prevents
further movement of the second component 28 and sole structure 30
in a direction (D) shown in FIG. 3A. In this state, the sole
structure 30 is attached and properly positioned relative to the
prosthetic blade 12 via the attachment system 10.
[0087] The sole structure 30 is restricted from disengaging the
prosthetic blade 12 due to the shape of the rail 32 and mating
channel 46. Namely, because the width (W.sub.2) is greater than the
width (W.sub.1), movement of the rail 32 and, thus, the prosthetic
blade 12, in a direction (Z; FIG. 3B) relative to and away from the
sole structure 30 is restricted. Specifically, if a force is
exerted on the first component 26 in the direction (Z), the force
is transmitted to the main body 40 of the second component 28 via
the rail 32. The second component 28 moves with the rail 32 in the
direction (Z) due to the shape of the rail 32 and channel 46. In
one configuration, the rail 32 and the channel 46 cooperate to form
a dovetail joint, thereby connecting the rail 32 and channel 46
together. This connection fixes the first component 26 to the
second component 28 such that these components 26, 28 are fixed for
movement in the Z direction.
[0088] While the shape of the rail 32 and the mating channel 46 are
described and shown as including a dovetail joint, the rail 32 and
mating channel 46 could have another shape. Namely, the rail 32
could have virtually any shape that includes a narrower cross
section proximate to the prosthetic blade 12 than at the second end
36. For example, the rail 32 may include a stem and bulb
configuration, whereby the stem is attached to the prosthetic blade
12 at the first end 34 and the bulb extends from the stem and
defines the second end 36. Similarly, the rail 32 may include a
cross section having a "T" shape with the stem of the "T" shape
being connected to the prosthetic blade 12 and defining the first
end 34 and the cross member of the "T" shape extending from the
stem and defining the second end 36. Finally, the rail could
include a circular or oval cross section with an outer perimeter
attached to the prosthetic blade 12. Each of the foregoing
configurations may be matingly received by a corresponding channel
46 to provide for slidable engagement between the first component
26 and the second component 28 while restricting disengagement
between these components 26, 28 in the direction (Z).
[0089] Removal of the rail 32 from the channel 46 may be
accomplished by applying a force on the second component in a
direction opposite to direction (D). The force causes the rail 32
to slide relative to and within the channel 46 as the second
component 28 moves in the direction opposite to direction (D). In
so doing, the distal end 16 of the prosthetic blade 12 disengages
and moves away from the stop surface 58. Movement of the second
component 28 relative to the first component 26 continues until the
rail 32 exits the channel 46 at the opening 56. At this point, the
second component 28 and sole structure 30 are disconnected from the
first component 26 and prosthetic blade 12.
[0090] The attachment system 10 may be used to attach different
sole structures 30 to the prosthetic blade 12. For example, the
attachment system 10 may be used to attach a particular sole
structure 30 for use in a particular activity, thereby providing
the user with a sole structure that is designed for the particular
activity.
[0091] The sole structure 30 shown in FIG. 2 includes a midsole 60
and an outsole 62. The midsole 60 is disposed between the second
component 28 and the outsole 62 and may be attached to both the
second component 28 and the outsole via a suitable adhesive.
Specifically, an adhesive may be applied to the flange 44 of the
second component 28 on an opposite side of the second component 28
than the projection 42. Similarly, an adhesive may be applied to
the outsole 62 at a surface 64 disposed on an opposite side of the
outsole 62 than a ground-contacting surface 66. The adhesive
attaches the midsole 60 to the second component 28 at the flange 44
and attaches the midsole 60 to the outsole 62 at the surface
64.
[0092] The midsole 60 provides a degree of cushioning to the sole
structure 30 and may be formed from a foamed polymer material
and/or may be a fluid-filled chamber. If the midsole 60 is a
fluid-filled chamber, the midsole 60 may be formed by joining two
sheets of polymer material together to define a chamber
therebetween. The chamber may be filled with a fluid such as, for
example, air, and may be pressurized. Regardless of the particular
construction of the midsole 60, the midsole 60 is disposed between
and is attached to the flange 44 on one side of the midsole 60 and
is attached to the outsole 62 on the other side of the midsole 60.
The materials and constructions of the midsole 60 are not limited
to the described exemplary configurations. As such, other materials
and constructions of midsole cushioning structures are also
intended to be within the scope of the present disclosure.
[0093] The outsole 62 shown in FIG. 2 includes a series of treads
68. The treads 68 are formed into the material of the outsole 62
and provide the outsole 62 with a tread pattern suitable for
walking and/or running on a substantially smooth surface (i.e.,
concrete or asphalt). The outsole 62 may be formed from an
abrasion-resistant material such as, for example, rubber that
provides a degree of friction between the outsole 62 and a ground
surface or other underlying substrate surface during use.
Alternatively, the outsole 62 can provide a degree of relatively
low frictional engagement between the outsole and an underlying
surface, such as an ice skating blade, a curling shoe outsole, a
bowling shoe outsole, or other materials or constructions that
allow sliding of a user's foot relative to an underlying surface as
may be typical and beneficial during many activities, as will be
recognized by a person of ordinary skill in the art in view of this
description and the accompanying drawing figures. Further, the
outsole 62 may include a binding or a cleat that is matingly
received in a catch (none shown), to allow the outsole 62 and,
thus, the sole structure 30 and prosthetic blade 12, to be attached
to an external structure such as a bike pedal or ski boot
binding.
[0094] The midsole 60 and the outsole 62 may also be used as a
"spacer" that allows the prosthetic blade 12 to provide the user
with an effective leg length that is approximately the same as the
user's other leg. For example, a number of different second
components 28 may be provided that each include a different
thickness, as measured in a direction extending from the outsole 62
to the midsole 60. The different thicknesses of the various second
components 28 allow the user to select a particular second
component 28 that results in the effective length of the leg having
the prosthetic blade 12 and sole structure 30 being the same as the
user's other leg. Accordingly, the user can select the appropriate
second component 28 based on the article of footwear in use on the
user's other leg. For example, a second component 28 having a
larger thickness could be used when the user's is wearing a
high-heel shoe on the foot of the other leg to accommodate for the
height of the high-heel shoe and a second component 28 having a
reduced thickness could be used when the user is wearing a
flat-bottom shoe on the foot of the other leg.
[0095] With particular reference to FIG. 4A, a sole structure 30a
is provided and includes an outsole 62a having a series of cleats
70. In view of the substantial similarity in structure and function
of the components associated with the sole structure 30 with
respect to the sole structure 30a, like reference numerals are used
hereinafter and in the drawings to identify like components while
like reference numerals containing letter extensions are used to
identify those components that have been modified.
[0096] The cleats 70 extend from the outsole 62a and provide the
sole structure 30a with the ability to grip a ground surface such a
natural or synthetic turf surface during use. As such, the sole
structure 30a may be attached to the prosthetic blade 12 via the
attachment system 10 when a user participates in an athletic
activity such as football, soccer, or lacrosse.
[0097] With particular reference to FIG. 4B, a sole structure 30b
is provided and includes an outsole 62b having a series of spikes
72. In view of the substantial similarity in structure and function
of the components associated with the sole structure 30b with
respect to the sole structure 30, like reference numerals are used
hereinafter and in the drawings to identify like components while
like reference numerals containing letter extensions are used to
identify those components that have been modified.
[0098] The spikes 72 extend from the outsole 62b and provide the
sole structure 30b with the ability to grip a ground surface such a
natural or synthetic track surface during use. As such, the sole
structure 30b may be attached to the prosthetic blade 12 via the
attachment system 10 when a user participates in an athletic
activity such as a track-and-field competition.
[0099] With particular reference to FIG. 4C, a sole structure 30c
is provided and includes an outsole 62c having a series of treads
68c. In view of the substantial similarity in structure and
function of the components associated with the sole structure 30c
with respect to the sole structure 30, like reference numerals are
used hereinafter and in the drawings to identify like components
while like reference numerals containing letter extensions are used
to identify those components that have been modified.
[0100] The treads 68c extend from the outsole 62 and provide the
sole structure 30c with the ability to grip a ground surface such
as loose dirt, rocks, and/or snow during use. As such, the sole
structure 30c may be attached to the prosthetic blade 12 via the
attachment system 10 when a user participates in an activity such
as hiking.
[0101] The various sole structures 30, 30a, 30b, 30c may be
selectively attached to the prosthetic blade 12 via the attachment
system 10. Namely, each of the sole structures 30, 30a, 30b, 30c
may include a dedicated second component 28 that allow the
respective sole structures 30, 30a, 30b, 30c to be attached to the
same rail 32 at different times. As such, the prosthetic blade 12
can include a single rail 32 but may be used with a variety of sole
structures 30, 30a, 30b, 30c. Further, such sole structures 30,
30a, 30b, 30c are easily interchanged with one another by removing
the rails 32 from one of the sole structures 30, 30a, 30b, 30c and
attaching it to another of the sole structures 30, 30a, 30b, 30c.
Providing the foregoing relationship between the rail 32 and the
second component 28 of the various sole structures 30, 30a, 30b,
30c allows a user to quickly and easily change the sole structure
30, 30a, 30b, 30c attached to the prosthetic blade 12. As such, a
user can quickly and easily tailor the prosthetic blade 12 for use
in different activities (i.e., running, hiking, etc.).
[0102] As described above, the attachment system 10 utilizes a stop
surface 58 of the second component 28 to properly position the
second component 28 and the sole structure 30 relative to the first
component 26 and prosthetic blade 12. The stop surface 58 ensures
that the second component 28 and, thus, the sole structure 30 is
moved a predetermined distance along the rail 32 to properly
position the sole structure 30 relative to the prosthetic blade 12.
The connection between the rail 32 and the channel 46 restricts
detachment of the first component 26 from the second component 28
in the direction (Z; FIG. 3B). However, while the first component
26 and the second component 28 are attached to one another via
interaction between the rail 32 and channel 46, movement of the
second component along the rail 32 (i.e., along the longitudinal
axis (L) of the prosthetic blade 12) is only restricted by the
friction between the rail 32 and the channel 46.
[0103] A latch mechanism 74 may be used to fix a position of the
second component 28 relative to the first component 26. Fixing a
position of the second component 28 relative to the first component
likewise fixes a position of the sole structure 30 relative to the
prosthetic blade 12.
[0104] With reference to FIGS. 1, 2, and 5A-5C, the latch mechanism
74 includes a first latch component 76 attached to the prosthetic
blade 12 and a second latch component 78 attached to the second
component 28. While the first latch component 76 is shown and
described as being attached to the prosthetic blade 12 and the
second latch component 78 is shown and described as being attached
to the second component 28, the first latch component 76 could
alternatively be attached to the second component 28 and the second
latch component 78 could alternatively be attached to the
prosthetic blade 12.
[0105] The first latch component 76 includes an opening 80 and a
pair of apertures 82 disposed on side surfaces of the latch
component 76 and positioned substantially ninety degrees)
(90.degree.) relative to the opening 80. The second latch mechanism
78 includes a locating tab 84 and a pair of latch elements 86
extending from a base 88. The second latch mechanism 78 may be
formed from a resilient material such as, for example, plastic and
may be movable from a relaxed state to a compressed state.
[0106] The first latch component 76 may be positioned relative to
the rail 32 such that when the second component 28 is moved the
predetermined distance relative to the first component 26 and the
distal end 16 of the prosthetic blade 12 engages the stop surface
58, the second latch component 78 is received by the first latch
component 76. Specifically, the locating tab 84 may enter the first
latch component 74 and may guide the second latch component 78 into
the first latch component 74.
[0107] Once the second latch component 78 is sufficiently received
by the first latch component 76, a force is applied to the latch
elements 86 by walls 90 (FIG. 5C) of the first latch component 76
to move the latch elements 86 from the relaxed state to the
compressed state. When the distal end 16 of the prosthetic blade 12
contacts the stop surface 58, the latch elements 86 oppose
respective ones of the apertures 82. At this point, the resilient
nature of the material of the second latch component 78 causes the
latch elements 86 to automatically return to the relaxed state and
protrude from the apertures 82 (FIG. 5B). At this point, the first
component 76 and the second component 78 are attached to one
another and relative movement therebetween is restricted due to
engagement between the latch elements 86 and the respective
apertures 82. Accordingly, relative movement between the first
component 26 and the second component 28 along the longitudinal
axis (L) of the prosthetic blade 12 is restricted and the position
of the sole structure 30 relative to the prosthetic blade 12 is
maintained.
[0108] The second latch component 78 may be removed from the first
latch component 76 by applying a force on the latch elements 86 in
a direction (X; FIG. 5B). Applying a force on the latch elements 86
in the direction (X) moves the latch elements 86 from the relaxed
state to the compressed state and removes the latch elements 86
from the apertures 82. Once the latch elements 86 are removed from
the apertures 82, the second latch component 78 may be removed from
the first latch component 76 by moving the second latch component
78--along with the second component 28 and sole structure 30--in a
direction away from the first latch component 76. Removing the
second latch component 78 from the first latch component 76 allows
the channel 46 to move relative to and along the rail 32.
Sufficient movement of the channel 46 relative to and along the
rail 32 allows the channel 46 to disengage the rail 32. Once
disengaged from the channel 46, the rail 32 may be attached to
another of the sole structures 30, 30a, 30b, 30c.
[0109] With reference to FIGS. 6A-6C, another latch mechanism 74a
for use with the attachment system 10 is provided. In view of the
substantial similarity in structure and function of the components
associated with the latch mechanism 74 with respect to the latch
mechanism 74a, like reference numerals are used hereinafter and in
the drawings to identify like components while like reference
numerals containing letter extensions are used to identify those
components that have been modified.
[0110] The latch mechanism 74a includes a first latch component 76a
attached to the prosthetic blade 12 and a second latch component
78a attached to the second component 28. While the first latch
component 76a is shown and described as being attached to the
prosthetic blade 12 and the second latch component 78a is shown and
described as being attached to the second component 28, the first
latch component 76a could alternatively be attached to the second
component 28 and the second latch component 78a could alternatively
be attached to the prosthetic blade 12.
[0111] The first latch component 76a includes a notch 92 having an
engagement surface 94. The second latch mechanism 78a includes a
latch element 86a extending from a base 88a. The second latch
mechanism 78a may be formed from a resilient material such as, for
example, plastic and may be movable from a relaxed state to a
flexed state.
[0112] The first latch component 76a may be positioned relative to
the rail 32 such that when the second component 28 is moved the
predetermined distance relative to the first component 26 and the
distal end 16 of the prosthetic blade 12 engages the stop surface
58, the second latch component 78a is received by the first latch
component 76a. Specifically, the latch element 86a is received by
the notch 92 to fix a position of the second latch component 78a
relative to the first latch component 76a.
[0113] Once the second latch component 78a is sufficiently received
by the first latch component 76a, the latch element 86a is moved
from the flexed state to the relaxed state and drops into the notch
92. Namely, a sloped surface 96 of the latch element 86a rides
along the first latch component 76a and positions the latch element
86a in the flexed state. When the latch element 86a encounters the
notch 92, the latch element 86a is automatically moved into the
relaxed state due to the resilient nature of the material of the
latch element 86a and drops into the notch 92. In so doing, a latch
surface 98 of the latch element 86a engages the engagement surface
94 of the first latch component 76a, thereby fixing a position of
the first component 26 relative to the second component 28. At this
point, the first component 76a and the second component 78a are
attached to one another and relative movement therebetween is
restricted due to engagement between the latch element 86a and the
engagement surface 94. Accordingly, relative movement between the
first component 26 and the second component 28 along the
longitudinal axis (L) of the prosthetic blade 12 is restricted and
the position of the sole structure 30 relative to the prosthetic
blade 12 is maintained.
[0114] The second latch component 78a may be removed from the first
latch component 76a by applying a force on the latch element 86a in
a direction (Y; FIG. 6C). Applying a force on the latch element 86a
in the direction (Y) moves the latch element 86a from the relaxed
state to the flexed state and removes the latch element 86a from
the notch 92. Once the latch element 86a is removed from the notch
92, the second latch component 78a may be removed from the first
latch component 76a by moving the second latch component 78a--along
with the second component 28 and sole structure 30--in a direction
away from the first latch component 76a. Removing the second latch
component 78a from the first latch component 76a allows the channel
46 to move relative to and along the rail 32. Sufficient movement
of the channel 46 relative to and along the rail 32 allows the
channel 46 to disengage the rail 32. Once disengaged from the
channel 46, the rail 32 may be attached to another of the sole
structures 30, 30a, 30b, 30c.
[0115] With reference to FIGS. 7A-7C, another latch mechanism 74b
for use with the attachment system 10 is provided. In view of the
substantial similarity in structure and function of the components
associated with the latch mechanism 74 with respect to the latch
mechanism 74b, like reference numerals are used hereinafter and in
the drawings to identify like components while like reference
numerals containing letter extensions are used to identify those
components that have been modified.
[0116] The latch mechanism 74b includes a first latch component 76b
attached to the prosthetic blade 12 and a second latch component
78b attached to the second component 28. While the first latch
component 76b is shown and described as being attached to the
prosthetic blade 12 and the second latch component 78b is shown and
described as being attached to the second component 28, the first
latch component 76b could alternatively be attached to the second
component 28 and the second latch component 78b could alternatively
be attached to the prosthetic blade 12.
[0117] The first latch component 76b includes a notch 92 having an
engagement surface 94. The second latch mechanism 78b includes a
latch element 86b extending from a base 88b. The second latch
mechanism 78b may be formed from a resilient material such as, for
example, plastic and may be movable from a relaxed state to a
flexed state.
[0118] The first latch component 76b may be positioned relative to
the rail 32 such that when the second component 28 is moved the
predetermined distance relative to the first component 26 and the
distal end 16 of the prosthetic blade 12 engages the stop surface
58, the second latch component 78b is received by the first latch
component 76b. Specifically, the latch element 86b is received by
the notch 92 to fix a position of the second latch component 78b
relative to the first latch component 76b. Alignment of the latch
element 86b and the notch 92 may be further achieved by engaging
projections 100 of the second latch component 78b with stops 102 of
the first latch component 76b.
[0119] Once the second latch component 78b is sufficiently received
by the first latch component 76b, the latch element 86b is moved
from the flexed state to the relaxed state and drops into the notch
92. Namely, a sloped surface 96 of the latch element 86b rides
along the first latch component 76b and positions the latch element
86b in the flexed state. When the latch element 86b encounters the
notch 92, the latch element 86b is automatically moved into the
relaxed state due to the resilient nature of the material of the
latch element 86b and drops into the notch 92. In so doing, a latch
surface 98 of the latch element 86b engages the engagement surface
94 of the first latch component 76b, thereby fixing a position of
the first component 26 relative to the second component 28. At this
point, the first component 76b and the second component 78b are
attached to one another and relative movement therebetween is
restricted due to engagement between the latch element 86b and the
engagement surface 94. Accordingly, relative movement between the
first component 26 and the second component 28 along the
longitudinal axis (L) of the prosthetic blade 12 is restricted and
the position of the sole structure 30 relative to the prosthetic
blade 12 is maintained.
[0120] The second latch component 78b may be removed from the first
latch component 76b by applying a force on the latch element 86b in
a direction (W; FIG. 7D). Applying a force on the latch element 86b
in the direction (W) moves the latch element 86b from the relaxed
state to the flexed state and removes the latch element 86b from
the notch 92. Once the latch element 86b is removed from the notch
92, the second latch component 78b may be removed from the first
latch component 76b by moving the second latch component 78b--along
with the second component 28 and sole structure 30--in a direction
away from the first latch component 76b. Removing the second latch
component 78b from the first latch component 76b allows the channel
46 to move relative to and along the rail 32. Sufficient movement
of the channel 46 relative to and along the rail 32 allows the
channel 46 to disengage the rail 32. Once disengaged from the
channel 46, the rail 32 may be attached to another of the sole
structures 30, 30a, 30b, 30c.
[0121] With reference to FIGS. 8A-8C, another latch mechanism 74c
for use with the attachment system 10 is provided. In view of the
substantial similarity in structure and function of the components
associated with the latch mechanism 74 with respect to the latch
mechanism 74c, like reference numerals are used hereinafter and in
the drawings to identify like components while like reference
numerals containing letter extensions are used to identify those
components that have been modified.
[0122] The latch mechanism 74c includes a first latch component 76c
attached to the prosthetic blade 12 and a second latch component
78c attached to the second component 28. While the first latch
component 76c is shown and described as being attached to the
prosthetic blade 12 and the second latch component 78c is shown and
described as being attached to the second component 28, the first
latch component 76c could alternatively be attached to the second
component 28 and the second latch component 78c could alternatively
be attached to the prosthetic blade 12.
[0123] The first latch component 76c includes a channel 104 having
an engagement surface 94c and a ramped surface 106. The second
latch mechanism 78c includes a latch element 86c extending from a
base 88c. The second latch mechanism 78c may be formed from a
resilient material such as, for example, plastic and may be movable
from a relaxed state to a flexed state.
[0124] The first latch component 76c may be positioned relative to
the rail 32 such that when the second component 28 is moved the
predetermined distance relative to the first component 26 and the
distal end 16 of the prosthetic blade 12 engages the stop surface
58, the second latch component 78c is received by the first latch
component 76c. Specifically, the latch element 86c is received by
the channel 104 to fix a position of the second latch component 78c
relative to the first latch component 76c.
[0125] Once the second latch component 78c is sufficiently received
by the first latch component 76c, the latch element 86c is moved
from the relaxed state to the flexed state when the sloped surface
96 engages the ramped surface 106. The latch element 86c remains in
the flexed state until the latch element 86c traverses the channel
104 and the latch surface 98 engages the engagement surface 94c.
Namely, the sloped surface 96 of the latch element 86c rides along
the ramped surface 106 and positions the latch element 86c in the
flexed state. When the latch element 86c traverses the entire
channel 104, the latch element 86c is automatically moved into the
relaxed state due to the resilient nature of the material of the
latch element 86c and is positioned in the configuration shown in
FIG. 8C. In so doing, the latch surface 98 of the latch element 86c
engages the engagement surface 94c of the first latch component
76c, thereby fixing a position of the first component 26 relative
to the second component 28. At this point, the first component 76c
and the second component 78c are attached to one another and
relative movement therebetween is restricted due to engagement
between the latch element 86c and the engagement surface 94c.
Accordingly, relative movement between the first component 26 and
the second component 28 along the longitudinal axis (L) of the
prosthetic blade 12 is restricted and the position of the sole
structure 30 relative to the prosthetic blade 12 is maintained.
[0126] The second latch component 78c may be removed from the first
latch component 76c by applying a force on the latch element 86c in
a direction (Q; FIG. 8C). Applying a force on the latch element 86c
in the direction (Q) moves the latch element 86c from the relaxed
state to the flexed state and removes the latch element 86c from
engagement with the engagement surface 94c. Once the latch element
86c is removed from engagement with the engagement surface 94c, the
second latch component 78c may be removed from the first latch
component 76c by moving the second latch component 78c--along with
the second component 28 and sole structure 30--in a direction away
from the first latch component 76c. Removing the second latch
component 78c from the first latch component 76c allows the channel
46 to move relative to and along the rail 32. Sufficient movement
of the channel 46 relative to and along the rail 32 allows the
channel 46 to disengage the rail 32. Once disengaged from the
channel 46, the rail 32 may be attached to another of the sole
structures 30, 30a, 30b, 30c.
[0127] With reference to FIGS. 9A-9C, another latch mechanism 74d
for use with the attachment system 10 is provided. In view of the
substantial similarity in structure and function of the components
associated with the latch mechanism 74 with respect to the latch
mechanism 74d, like reference numerals are used hereinafter and in
the drawings to identify like components while like reference
numerals containing letter extensions are used to identify those
components that have been modified.
[0128] The latch mechanism 74d includes a first latch component 76d
attached to the prosthetic blade 12 and a second latch component
78d attached to the second component 28. While the first latch
component 76d is shown and described as being attached to the
prosthetic blade 12 and the second latch component 78d is shown and
described as being attached to the second component 28, the first
latch component 76d could alternatively be attached to the second
component 28 and the second latch component 78d could alternatively
be attached to the prosthetic blade 12.
[0129] The second latch component 78d includes a latch element 86d
extending from a base 88d. The second latch mechanism 78d may be
formed from a resilient material such as, for example, plastic
and/or rubber and may be movable from a relaxed state to a flexed
state.
[0130] The first latch component 76d may be positioned relative to
the rail 32 such that when the second component 28 is moved the
predetermined distance relative to the first component 26 and the
distal end 16 of the prosthetic blade 12 engages the stop surface
58, the second latch component 78d is positioned proximate to the
first latch component 76d. Specifically, the latch element 86d
opposes a projection 108 of the first latch component 76d and may
be attached to the projection 108 to fix a position of the second
latch component 78d relative to the first latch component 76d.
[0131] Once the second latch component 78d is sufficiently attached
to the first latch component 76d, the latch element 86d is moved
from the relaxed state to the flexed state. Specifically, a force
may be applied to the latch element 86d to move the latch element
86d from the relaxed state (FIG. 9C) to the flexed state (FIGS. 9A
and 9B) and into engagement with the projection 108 of the first
latch component 76d.
[0132] The latch element 86d may include a hook 110 that is
received by a recess 112 of the first latch component 76d when the
latch element 86d is returned to the relaxed state. At this point,
the first component 76d and the second component 78d are attached
to one another and relative movement therebetween is restricted due
to engagement between the hook 110 of the latch element 86d and the
recess 110 of the first latch component 76d. Accordingly, relative
movement between the first component 26 and the second component 28
along the longitudinal axis (L) of the prosthetic blade 12 is
restricted and the position of the sole structure 30 relative to
the prosthetic blade 12 is maintained.
[0133] The second latch component 78d may be removed from the first
latch component 76d by applying a force on the latch element 86d in
a direction (R; FIG. 9C). Applying a force on the latch element 86d
in the direction (R) moves the latch element 86d from the relaxed
state to the flexed state and removes the latch element 86d from
engagement with the recess 112. Once the latch element 86d is
removed from engagement with the recess 112, the second latch
component 78d may be removed from the first latch component 76d by
moving the second latch component 78d--along with the second
component 28 and sole structure 30--in a direction away from the
first latch component 76d. Removing the second latch component 78d
from the first latch component 76d allows the channel 46 to move
relative to and along the rail 32. Sufficient movement of the
channel 46 relative to and along the rail 32 allows the channel 46
to disengage the rail 32. Once disengaged from the channel 46, the
rail 32 may be attached to another of the sole structures 30, 30a,
30b, 30c.
[0134] With reference to FIGS. 10A-10C, another latch mechanism 74e
for use with the attachment system 10 is provided. In view of the
substantial similarity in structure and function of the components
associated with the latch mechanism 74 with respect to the latch
mechanism 74e, like reference numerals are used hereinafter and in
the drawings to identify like components while like reference
numerals containing letter extensions are used to identify those
components that have been modified.
[0135] The latch mechanism 74e includes a first latch component 76e
attached to the prosthetic blade 12 and a second latch component
78e attached to the second component 28. While the first latch
component 76e is shown and described as being attached to the
prosthetic blade 12 and the second latch component 78e is shown and
described as being attached to the second component 28, the first
latch component 76e could alternatively be attached to the second
component 28 and the second latch component 78e could alternatively
be attached to the prosthetic blade 12.
[0136] The first latch component 76e includes a notch 92e having an
engagement surface 94e (FIG. 10B) and a magnet 114 located on an
opposite side of the first latch component 76e than the notch 92e.
As shown in FIGS. 10B and 10C, the notch 92e and magnet 114 may be
located on opposite sides of the body portion 18 of the prosthetic
blade 12 such that the notch 92e is formed into the material of the
body portion 18 and the magnet 114 is recessed into the body
portion 18. The second latch mechanism 78e includes a projection
116 extending from a base 88e and including at least a portion
formed from metal. The base 88e and at least a portion of the
projection 116 of the second latch mechanism 78e may be formed from
a resilient material such as, for example, plastic and may be
movable from a relaxed state to a flexed state.
[0137] The first latch component 76e may be positioned relative to
the rail 32 such that when the second component 28 is moved the
predetermined distance relative to the first component 26 and the
distal end 16 of the prosthetic blade 12 engages the stop surface
58, the second latch component 78e is received by the first latch
component 76e. Specifically, the latch element 86e is received by
the notch 92e to fix a position of the second latch component 78e
relative to the first latch component 76e.
[0138] Once the second latch component 78e is sufficiently received
by the first latch component 76e, the latch element 86e is moved
from the flexed state to the relaxed state and drops into the notch
92e. Namely, the projection 116 of the latch element 86e rides
along the first latch component 76e and positions the latch element
86e in the flexed state. When the latch element 86e encounters the
notch 92e, the latch element 86e is automatically moved into the
relaxed state due to the resilient nature of the material of the
latch element 86e and due to the magnet exerting a force on the
projection 116 and drops into the notch 92e. In so doing, a latch
surface 98e of the latch element 86e engages the engagement surface
94e of the first latch component 76e, thereby fixing a position of
the first component 26 relative to the second component 28. At this
point, the first component 76e and the second component 78e are
attached to one another and relative movement therebetween is
restricted due to engagement between the latch element 86e and the
engagement surface 94e. Accordingly, relative movement between the
first component 26 and the second component 28 along the
longitudinal axis (L) of the prosthetic blade 12 is restricted and
the position of the sole structure 30 relative to the prosthetic
blade 12 is maintained.
[0139] The second latch component 78e may be removed from the first
latch component 76e by applying a force on the latch element 86e in
a direction (S; FIG. 10C). Applying a force on the latch element
86e in the direction (S) moves the latch element 86e from the
relaxed state to the flexed state and removes the latch element 86e
from the notch 92e. Once the latch element 86e is removed from the
notch 92e, the second latch component 78e may be removed from the
first latch component 76e by moving the second latch component
78e--along with the second component 28 and sole structure 30--in a
direction away from the first latch component 76e. Removing the
second latch component 78e from the first latch component 76e
allows the channel 46 to move relative to and along the rail 32.
Sufficient movement of the channel 46 relative to and along the
rail 32 allows the channel 46 to disengage the rail 32. Once
disengaged from the channel 46, the rail 32 may be attached to
another of the sole structures 30, 30a, 30b, 30c.
[0140] With reference to FIGS. 11A-11C, another latch mechanism 74f
for use with the attachment system 10 is provided. In view of the
substantial similarity in structure and function of the components
associated with the latch mechanism 74 with respect to the latch
mechanism 74f, like reference numerals are used hereinafter and in
the drawings to identify like components while like reference
numerals containing letter extensions are used to identify those
components that have been modified.
[0141] The latch mechanism 74f includes a first latch component 76f
attached to the prosthetic blade 12 and a second latch component
78f attached to the second component 28. While the first latch
component 76f is shown and described as being attached to the
prosthetic blade 12 and the second latch component 78f is shown and
described as being attached to the second component 28, the first
latch component 76f could alternatively be attached to the second
component 28 and the second latch component 78f could alternatively
be attached to the prosthetic blade 12.
[0142] The first latch component 76f includes a channel 104f and a
projection 118 including an engagement surface 94f formed at a
distal end thereof extending into the channel 104f The second latch
mechanism 78f includes a latch element 86f extending from a base
88f and including a series of peaks 120 and depressions 122 formed
between adjacent peaks 120.
[0143] The first latch component 76f may be positioned relative to
the rail 32 such that when the second component 28 is moved the
predetermined distance relative to the first component 26 and the
distal end 16 of the prosthetic blade 12 engages the stop surface
58, the second latch component 78f is received by the first latch
component 76f. Specifically, the latch element 86f is received by
the channel 104f to fix a position of the second latch component
78f relative to the first latch component 76f.
[0144] Once the second latch component 78f is sufficiently received
by the first latch component 76f, the latch element 86f is moved
into engagement with the engagement surface 94f of the projection
118. Namely, the projection 118 moves along the latch element 86f
and is received within depressions 122 formed between adjacent
peaks 120. The latch element 86f may be received within any of the
depressions 122 depending on the extent to which the latch element
86f extends into the channel 104f. Once movement of the latch
element 86f into the channel 104f is stopped and the projection 118
is received within a depression 122, the first component 76f and
the second component 78f are attached to one another and relative
movement therebetween is restricted due to engagement between the
latch element 86f and the engagement surface 94f of the projection
118. Accordingly, relative movement between the first component 26
and the second component 28 along the longitudinal axis (L) of the
prosthetic blade 12 is restricted and the position of the sole
structure 30 relative to the prosthetic blade 12 is maintained.
[0145] The second latch component 78f may be removed from the first
latch component 76f by applying a force on a release tab 124 to
depress the release tab 124 and remove the projection 118 from
engagement with the depressions 120. Specifically, the applied
force causes the projection 118 to move in the direction (T) and
away from the latch element 86f Once the engagement surface 94f of
the projection 118 is removed from engagement with the latch
element 86f, the second latch component 78f may be removed from the
first latch component 76f by moving the second latch component
78f--along with the second component 28 and sole structure 30--in a
direction away from the first latch component 76f Removing the
second latch component 78f from the first latch component 76f
allows the channel 46 to move relative to and along the rail 32.
Sufficient movement of the channel 46 relative to and along the
rail 32 allows the channel 46 to disengage the rail 32. Once
disengaged from the channel 46, the rail 32 may be attached to
another of the sole structures 30, 30a, 30b, 30c.
[0146] With reference to FIGS. 12A-12B, another latch mechanism 74g
for use with the attachment system 10 is provided. In view of the
substantial similarity in structure and function of the components
associated with the latch mechanism 74 with respect to the latch
mechanism 74g, like reference numerals are used hereinafter and in
the drawings to identify like components while like reference
numerals containing letter extensions are used to identify those
components that have been modified.
[0147] The latch mechanism 74g includes a first latch component 76g
attached to the prosthetic blade 12 and a second latch component
78g attached to the second component 28. While the first latch
component 76g is shown and described as being attached to the
prosthetic blade 12 and the second latch component 78g is shown and
described as being attached to the second component 28, the first
latch component 76g could alternatively be attached to the second
component 28 and the second latch component 78g could alternatively
be attached to the prosthetic blade 12.
[0148] The first latch component 76g includes a buckle 126. The
first latch component 76g may be positioned relative to the rail 32
such that when the second component 28 is moved the predetermined
distance relative to the first component 26 and the distal end 16
of the prosthetic blade 12 engages the stop surface 58, the second
latch component 78g is positioned proximate to the first latch
component 76g. Specifically, the buckle 126 receives a belt portion
128 of the second latch component 78g and may be attached to the
belt portion 128 to fix a position of the second latch component
78g relative to the first latch component 76g.
[0149] The buckle 124 may include a post 130 that is received by
one of a series of apertures 132 associated with the belt portion
128. When the post 130 is received in one of the apertures 132, the
position of the belt portion 128 relative to the buckle 126 is
substantially fixed. At this point, the first latch component 76g
and the second latch component 78g are attached to one another and
relative movement therebetween is restricted due to engagement
between the buckle 126 and the belt portion 128. Accordingly,
relative movement between the first component 26 and the second
component 28 along the longitudinal axis (L) of the prosthetic
blade 12 is restricted and the position of the sole structure 30
relative to the prosthetic blade 12 is maintained.
[0150] The second latch component 78g may be removed from the first
latch component 76g by applying a force on the post 130 to remove
the post 120 from the belt portion 128. Once the post 130 is
removed from engagement with the belt portion 128, the second latch
component 78g may be removed from the first latch component 76g by
moving the second latch component 78g--along with the second
component 28 and sole structure 30--in a direction away from the
first latch component 76g. Removing the second latch component 78g
from the first latch component 76g allows the channel 46 to move
relative to and along the rail 32. Sufficient movement of the
channel 46 relative to and along the rail 32 allows the channel 46
to disengage the rail 32. Once disengaged from the channel 46, the
rail 32 may be attached to another of the sole structures 30, 30a,
30b, 30c.
[0151] With reference to FIGS. 13A-13B, another latch mechanism 74h
for use with the attachment system 10 is provided. In view of the
substantial similarity in structure and function of the components
associated with the latch mechanism 74 with respect to the latch
mechanism 74g, like reference numerals are used hereinafter and in
the drawings to identify like components while like reference
numerals containing letter extensions are used to identify those
components that have been modified.
[0152] The latch mechanism 74h includes a first latch component 76h
attached to the prosthetic blade 12 and a second latch component
78h attached to the second component 28. While the first latch
component 76h is shown and described as being attached to the
prosthetic blade 12 and the second latch component 78h is shown and
described as being attached to the second component 28, the first
latch component 76h could alternatively be attached to the second
component 28 and the second latch component 78h could alternatively
be attached to the prosthetic blade 12.
[0153] The first latch component 76h includes a latch post 134. The
first latch component 76h may be positioned relative to the rail 32
such that when the second component 28 is moved the predetermined
distance relative to the first component 26 and the distal end 16
of the prosthetic blade 12 engages the stop surface 58, the second
latch component 78h is positioned proximate to the first latch
component 76h. Specifically, the latch post 134 may be inserted
into one of a series of apertures 132 of the belt portion 128 to
fix a position of the second latch component 78h relative to the
first latch component 76h.
[0154] When the latch post 134 is received in one of the apertures
132, the position of the belt portion 128 relative to the first
latch component 76h is substantially fixed. At this point, the
first latch component 76h and the second latch component 78h are
attached to one another and relative movement therebetween is
restricted due to engagement between the latch post 134 and the
belt portion 128. Accordingly, relative movement between the first
component 26 and the second component 28 along the longitudinal
axis (L) of the prosthetic blade 12 is restricted and the position
of the sole structure 30 relative to the prosthetic blade 12 is
maintained.
[0155] The second latch component 78h may be removed from the first
latch component 76h by removing the latch post 134 from the belt
portion 128. Once the post 134 is removed from engagement with the
belt portion 128, the second latch component 78h may be removed
from the first latch component 76h by moving the second latch
component 78h--along with the second component 28 and sole
structure 30--in a direction away from the first latch component
76h. Removing the second latch component 78h from the first latch
component 76h allows the channel 46 to move relative to and along
the rail 32. Sufficient movement of the channel 46 relative to and
along the rail 32 allows the channel 46 to disengage the rail 32.
Once disengaged from the channel 46, the rail 32 may be attached to
another of the sole structures 30, 30a, 30b, 30c.
[0156] With reference to FIGS. 14A-14C, another latch mechanism 74i
for use with the attachment system 10 is provided. In view of the
substantial similarity in structure and function of the components
associated with the latch mechanism 74 with respect to the latch
mechanism 74i, like reference numerals are used hereinafter and in
the drawings to identify like components while like reference
numerals containing letter extensions are used to identify those
components that have been modified.
[0157] The latch mechanism 74i includes a first latch component 76i
attached to the prosthetic blade 12 and a second latch component
78i attached to the second component 28. While the first latch
component 76i is shown and described as being attached to the
prosthetic blade 12 and the second latch component 78i is shown and
described as being attached to the second component 28, the first
latch component 76i could alternatively be attached to the second
component 28 and the second latch component 78i could alternatively
be attached to the prosthetic blade 12.
[0158] The first latch component 76i includes a channel 104i and a
recess 136 in communication with the channel 104i. The second latch
mechanism 78i includes a latch element 86i in selective engagement
with a plunger 140. The plunger 140 is disposed within the recess
136 and extends into the channel 104i. The plunger 140 is biased in
the direction (M) shown in FIG. 14B by a biasing member 142. The
biasing member 142 may be a coil spring that acts on the plunger
142 to bias the plunger 140 into the channel 104i.
[0159] The first latch component 76i may be positioned relative to
the rail 32 such that when the second component 28 is moved the
predetermined distance relative to the first component 26 and the
distal end 16 of the prosthetic blade 12 engages the stop surface
58, the second latch component 78i is received by the first latch
component 76i. Specifically, the latch element 86i is received by
the channel 104i to fix a position of the second latch component
78i relative to the first latch component 76i.
[0160] Once the second latch component 78i is sufficiently received
by the first latch component 76i, the latch element 86i is moved
into the channel 104i and into engagement with the plunger 140.
Namely, the latch element 86i moves the plunger 140 in a direction
opposite to direction (M) upon first entering the channel 104i.
Once movement of the latch element 86i into the channel 104i is
stopped due to the distal end 16 of the prosthetic blade 12
engaging the stop surface 58, the plunger 140 is received by one of
a series of detents 138 formed in the latch element 86i. Once
movement of the latch element 86i into the channel 104i is stopped
and the plunger 140 is received within a detent 138, the first
component 76i and the second component 78i are attached to one
another and relative movement therebetween is restricted.
Accordingly, relative movement between the first component 26 and
the second component 28 along the longitudinal axis (L) of the
prosthetic blade 12 is restricted and the position of the sole
structure 30 relative to the prosthetic blade 12 is maintained.
[0161] The second latch component 78i may be removed from the first
latch component 76i by applying a force on the plunger 140 in a
direction opposite to direction (M) and against the force exerted
on the plunger 140 by the biasing member 142. Once the plunger 140
is removed from the detent 138, the second latch component 78i may
be removed from the first latch component 76i by moving the second
latch component 78i--along with the second component 28 and sole
structure 30--in a direction away from the first latch component
76i. Removing the second latch component 78i from the first latch
component 76i allows the channel 46 to move relative to and along
the rail 32. Sufficient movement of the channel 46 relative to and
along the rail 32 allows the channel 46 to disengage the rail 32.
Once disengaged from the channel 46, the rail 32 may be attached to
another of the sole structures 30, 30a, 30b, 30c.
[0162] With reference to FIGS. 15A-15C, another latch mechanism 74j
for use with the attachment system 10 is provided. In view of the
substantial similarity in structure and function of the components
associated with the latch mechanism 74 with respect to the latch
mechanism 74j, like reference numerals are used hereinafter and in
the drawings to identify like components while like reference
numerals containing letter extensions are used to identify those
components that have been modified.
[0163] The latch mechanism 74j includes a first latch component 76j
attached to the prosthetic blade 12 and a second latch component
78j attached to the second component 28. While the first latch
component 76j is shown and described as being attached to the
prosthetic blade 12 and the second latch component 78j is shown and
described as being attached to the second component 28, the first
latch component 76j could alternatively be attached to the second
component 28 and the second latch component 78j could alternatively
be attached to the prosthetic blade 12.
[0164] The first latch component 76j includes a recess 144
receiving a ball 146 and a biasing member 148 therein. The biasing
member 148 biases the ball 146 in a direction (N) in a direction
away from the recess 144. The second latch mechanism 78j includes a
socket 150 extending into the second latch component 78j.
[0165] The first latch component 76j may be positioned relative to
the rail 32 such that when the second component 28 is moved the
predetermined distance relative to the first component 26 and the
distal end 16 of the prosthetic blade 12 engages the stop surface
58, the ball 146 is automatically received by socket 150 due to the
biasing force exerted on the ball 146 by the biasing member
148.
[0166] Once the ball 146 is sufficiently received by the socket
150, a position of the first component 26 relative to the second
component 28 is fixed. At this point, the first component 76j and
the second component 78j are attached to one another and relative
movement therebetween is restricted. Accordingly, relative movement
between the first component 26 and the second component 28 along
the longitudinal axis (L) of the prosthetic blade 12 is restricted
and the position of the sole structure 30 relative to the
prosthetic blade 12 is maintained.
[0167] The second latch component 78j may disengaged from the ball
146 by moving the second latch component 78j--along with the second
component 28 and sole structure 30--in a direction away from the
first latch component 76j. Removing the socket 150 from the ball
146 allows the channel 46 to move relative to and along the rail
32. Sufficient movement of the channel 46 relative to and along the
rail 32 allows the channel 46 to disengage the rail 32. Once
disengaged from the channel 46, the rail 32 may be attached to
another of the sole structures 30, 30a, 30b, 30c.
[0168] With reference to FIGS. 16A-16C, another latch mechanism 74k
for use with the attachment system 10 is provided. In view of the
substantial similarity in structure and function of the components
associated with the latch mechanism 74 with respect to the latch
mechanism 74k, like reference numerals are used hereinafter and in
the drawings to identify like components while like reference
numerals containing letter extensions are used to identify those
components that have been modified.
[0169] The latch mechanism 74k includes a first latch component 76k
attached to the prosthetic blade 12 and a second latch component
78k attached to the second component 28. While the first latch
component 76k is shown and described as being attached to the
prosthetic blade 12 and the second latch component 78k is shown and
described as being attached to the second component 28, the first
latch component 76k could alternatively be attached to the second
component 28 and the second latch component 78k could alternatively
be attached to the prosthetic blade 12.
[0170] The first latch component 76k includes a channel 104k and a
recess 136k in communication with the channel 104k. The second
latch mechanism 78k includes a latch element 86k in selective
engagement with a plunger 140k. The plunger 140k is disposed within
the recess 136k and extends into the channel 104k. The plunger 140k
is biased in the direction (O) shown in FIG. 16A by a biasing
member 142k. The biasing member 142k may be a coil spring that acts
on the plunger 142k to bias the plunger 140k into the channel
104k.
[0171] The first latch component 76k may be positioned relative to
the rail 32 such that when the second component 28 is moved the
predetermined distance relative to the first component 26 and the
distal end 16 of the prosthetic blade 12 engages the stop surface
58, the second latch component 78k is received by the first latch
component 76k. Specifically, the latch element 86k is received by
the channel 104k to fix a position of the second latch component
78k relative to the first latch component 76k.
[0172] Once the second latch component 78k is sufficiently received
by the first latch component 76k, the latch element 86k is moved
into the channel 104k and into engagement with the plunger 140k.
Namely, the latch element 86k moves the plunger 140k in a direction
opposite to direction (O) upon first entering the channel 104k at a
rounded, distal end 152 of the latch element 86k. Once movement of
the latch element 86k into the channel 104k is stopped due to the
distal end 16 of the prosthetic blade 12 engaging the stop surface
58, the plunger 140k is received by an aperture 154 formed in the
latch element 86k. Once movement of the latch element 86k into the
channel 104k is stopped and the plunger 140k is received within the
aperture 154, the first component 76k and the second component 78k
are attached to one another and relative movement therebetween is
restricted. Accordingly, relative movement between the first
component 26 and the second component 28 along the longitudinal
axis (L) of the prosthetic blade 12 is restricted and the position
of the sole structure 30 relative to the prosthetic blade 12 is
maintained.
[0173] The second latch component 78k may be removed from the first
latch component 76k by applying a force on the plunger 140k in a
direction opposite to direction (O) and against the force exerted
on the plunger 140k by the biasing member 142k. Once the plunger
140k is removed from the aperture 154, the second latch component
78k may be removed from the first latch component 76k by moving the
second latch component 78k--along with the second component 28 and
sole structure 30--in a direction away from the first latch
component 76k. Removing the second latch component 78k from the
first latch component 76k allows the channel 46 to move relative to
and along the rail 32. Sufficient movement of the channel 46
relative to and along the rail 32 allows the channel 46 to
disengage the rail 32. Once disengaged from the channel 46, the
rail 32 may be attached to another of the sole structures 30, 30a,
30b, 30c.
[0174] With reference to FIGS. 17A-17C, another latch mechanism 74l
for use with the attachment system 10 is provided. In view of the
substantial similarity in structure and function of the components
associated with the latch mechanism 74 with respect to the latch
mechanism 74l, like reference numerals are used hereinafter and in
the drawings to identify like components while like reference
numerals containing letter extensions are used to identify those
components that have been modified.
[0175] The latch mechanism 74l includes a first latch component 76l
attached to the prosthetic blade 12 and a second latch component
78l attached to the second component 28. While the first latch
component 76l is shown and described as being attached to the
prosthetic blade 12 and the second latch component 78l is shown and
described as being attached to the second component 28, the first
latch component 76l could alternatively be attached to the second
component 28 and the second latch component 78l could alternatively
be attached to the prosthetic blade 12.
[0176] The first latch component 76l includes a post 156 having a
pair of projections 158 defining a pair of detents 160. The second
latch component 76l includes a pair of extensions 162 formed from a
flexible material and extending into a channel 164.
[0177] The first latch component 76l may be positioned relative to
the rail 32 such that when the second component 28 is moved the
predetermined distance relative to the first component 26 and the
distal end 16 of the prosthetic blade 12 engages the stop surface
58, the second latch component 78l receives the first latch
component 76l. Specifically, the post 156 is received by the
channel 164 with the extensions 162 sliding along respective outer
surfaces 168 of the post 156. Because the extensions 162 are formed
from a flexible material, the extensions 162 bend into the shape
shown in FIG. 17A. The extensions 162, upon encountering the
projections 158 bend further until being received within respective
detents 160. At this point, a position of the second latch
component 78l relative to the first latch component 76l is
fixed.
[0178] The second latch component 78l may be removed from the first
latch component 76l by moving the second latch component 78l--along
with the second component 28 and sole structure 30--in a direction
away from the first latch component 76l to allow the extensions 162
to disengage the detents 160 and once again slide along the
surfaces 168 of the post 156. Removing the second latch component
78l from the first latch component 76lk allows the channel 46 to
move relative to and along the rail 32. Sufficient movement of the
channel 46 relative to and along the rail 32 allows the channel 46
to disengage the rail 32. Once disengaged from the channel 46, the
rail 32 may be attached to another of the sole structures 30, 30a,
30b, 30c.
[0179] With reference to FIGS. 18A-18C, another latch mechanism 74m
for use with the attachment system 10 is provided. In view of the
substantial similarity in structure and function of the components
associated with the latch mechanism 74 with respect to the latch
mechanism 74m, like reference numerals are used hereinafter and in
the drawings to identify like components while like reference
numerals containing letter extensions are used to identify those
components that have been modified.
[0180] The latch mechanism 74m includes a first latch component 76m
attached to the prosthetic blade 12 and a second latch component
78m attached to the second component 28. While the first latch
component 76m is shown and described as being attached to the
prosthetic blade 12 and the second latch component 78m is shown and
described as being attached to the second component 28, the first
latch component 76m could alternatively be attached to the second
component 28 and the second latch component 78m could alternatively
be attached to the prosthetic blade 12.
[0181] The first latch component 76m includes a cage 170 including
an opening 172 and a pair of spring members 174 disposed therein.
The second latch component 76m includes a latch element 86m having
a shape that approximates a shape of the opening 172.
[0182] The first latch component 76m may be positioned relative to
the rail 32 such that when the second component 28 is moved the
predetermined distance relative to the first component 26 and the
distal end 16 of the prosthetic blade 12 engages the stop surface
58, the second latch component 78m is received by the cage 170.
Specifically, the latch element 78m is positioned above the opening
172 and exerts a force on the spring members 174, thereby causing
the spring members 174 to move away from one another. Once fully
seated, the latch element 78m is retained within the opening 172 by
the spring members 174 acting on the latch element 78m in a
direction toward one another. At this point, a position of the
second latch component 78m relative to the first latch component
76m is fixed.
[0183] The second latch component 78m may be removed from the first
latch component 76m by moving the second latch component 78m--along
with the second component 28 and sole structure 30--in a direction
away from the first latch component 76m to allow the latch element
78m to disengage the spring members 174 and be removed from the
opening 172. Removing the second latch component 78m from the first
latch component 76m allows the channel 46 to move relative to and
along the rail 32. Sufficient movement of the channel 46 relative
to and along the rail 32 allows the channel 46 to disengage the
rail 32. Once disengaged from the channel 46, the rail 32 may be
attached to another of the sole structures 30, 30a, 30b, 30c.
[0184] With reference to FIGS. 19A-19C, another latch mechanism 74n
for use with the attachment system 10 is provided. In view of the
substantial similarity in structure and function of the components
associated with the latch mechanism 74 with respect to the latch
mechanism 74n, like reference numerals are used hereinafter and in
the drawings to identify like components while like reference
numerals containing letter extensions are used to identify those
components that have been modified.
[0185] The latch mechanism 74n includes a first latch component 76n
attached to the prosthetic blade 12 and a second latch component
78n attached to the second component 28. While the first latch
component 76n is shown and described as being attached to the
prosthetic blade 12 and the second latch component 78n is shown and
described as being attached to the second component 28, the first
latch component 76n could alternatively be attached to the second
component 28 and the second latch component 78n could alternatively
be attached to the prosthetic blade 12.
[0186] The first latch component 76n includes a recess 176 having a
post 178 disposed therein. In one configuration, the post 178
includes a ball 180 disposed at a distal end thereof. The second
latch component 78n includes a pair of engagement blocks 182 biased
toward one another by a pair of biasing members 184. In one
configuration, the biasing members 184 are coil springs.
[0187] The first latch component 76n may be positioned relative to
the rail 32 such that when the second component 28 is moved the
predetermined distance relative to the first component 26 and the
distal end 16 of the prosthetic blade 12 engages the stop surface
58, the second latch component 78n is received by the recess 176.
Specifically, the ball 180 engages the engagement blocks 182,
thereby causing the engagement blocks 182 to move away from one
another against the bias of the biasing members 184. The engagement
blocks 182 may each include a depression 186 sized to mate with the
outer perimeter of the ball 180. As such, engagement between the
engagement blocks 182 and the ball 180 maintains the second latch
component 78n in contact with the first latch component 76n. At
this point, a position of the second latch component 78n relative
to the first latch component 76n is fixed.
[0188] The second latch component 78n may be removed from the first
latch component 76n by moving the second latch component 78n--along
with the second component 28 and sole structure 30--in a direction
away from the first latch component 76n to allow engagement blocks
182 to disengage the ball 180 and be removed from the opening
recess 176. Removing the second latch component 78n from the first
latch component 76n allows the channel 46 to move relative to and
along the rail 32. Sufficient movement of the channel 46 relative
to and along the rail 32 allows the channel 46 to disengage the
rail 32. Once disengaged from the channel 46, the rail 32 may be
attached to another of the sole structures 30, 30a, 30b, 30c.
[0189] The following Clauses provide an exemplary configuration for
an attachment system for securing to a prosthetic device, as
described above.
[0190] Clause 1: An attachment system for use with a prosthetic
device, the attachment system comprising a first component
including a first surface, and further including one of a channel
and a projection disposed on an opposite side of the first
component than the first surface and a second component including a
second surface, and further including the other of the channel and
the projection disposed on an opposite side of the second component
than the second surface, the other of the channel and the
projection slidably engaging the one of the channel and the
projection to selectively couple the first component and the second
component together. The first surface and the second surface is
operable to be attached to the prosthetic device and the other of
the first surface and the second surface is operable to be attached
to a sole structure having a ground-engaging surface.
[0191] Clause 2: The attachment system of Clause 1, wherein the
slidably engaging comprises the channel matingly receiving the
projection therein.
[0192] Clause 3: The attachment system of any of the preceding
clauses, wherein the projection includes a first portion that is
disposed at a junction of the prosthetic device and the one of the
first surface and the second surface, and a second portion that is
spaced apart from the first portion and is received by the channel,
a cross-section of the projection being wider at the second portion
than at the first portion.
[0193] Clause 4: The attachment system of Clause 3, wherein the
channel and the projection cooperate to selectively provide a
dovetail connection between the first component and the second
component.
[0194] Clause 5: The attachment system of any of the preceding
clauses, wherein the sole structure includes a cushioning layer
disposed between the other of the first surface and the second
surface and the ground-engaging surface.
[0195] Clause 6: The attachment system of Clause 5, wherein the
ground-engaging surface is formed by the cushioning layer.
[0196] Clause 7: The attachment system of Clause 5, wherein the
ground-engaging surface is formed by an outsole layer that is
attached to the cushioning layer.
[0197] Clause 8: The attachment system of any of the preceding
clauses, further comprising a latch mechanism operable to fix a
relative position between the first component and the second
component.
[0198] Clause 9: The attachment system of Clause 8, wherein the
latch mechanism is automatically moved into a latched state to fix
the relative position between the first component and the second
component when the projection is moved into the channel a
predetermined distance.
[0199] Clause 10: The attachment system of Clause 9, wherein the
latch mechanism includes a male component that is fixed for
movement with one of the first component and the second component
and a female component that is fixed for movement with the other of
the first component and the second component, the female component
receiving the male component and securing the male component to the
female component when the projection is moved the predetermined
distance into the channel.
[0200] Clause 11: The attachment system of Clause 8, wherein the
latch mechanism includes a latching element fixed for movement with
one of the first component and the second component, and further
including a latching feature fixed for movement with the other of
the first component and the second component, the latching element
operable to be actuated by and to engage the latching feature in
response to a sliding engagement between the first component and
the second component.
[0201] Clause 12: The attachment system of Clause 11, wherein the
other of the first component and the second component includes a
ramping surface operable to deflect the latching element to
position the latching element into engagement with the latching
feature.
[0202] Clause 13: The attachment system of any of the preceding
clauses, wherein the prosthetic device is a foot prosthetic
device.
[0203] Clause 14: The attachment system of Clause 13, wherein the
prosthetic device is a blade prosthetic device.
[0204] Clause 15: The attachment system of any of the preceding
clauses, wherein the first component and the second component are
elongate components.
[0205] Clause 16: An attachment system for use with a prosthetic
device, the attachment system comprising a first elongate component
attached to the prosthetic device and a second elongate component
attached to a sole structure having a ground-engaging surface, the
second elongate component slidably receiving the first elongate
component to attach the sole structure to the prosthetic
device.
[0206] Clause 17: The attachment system of Clause 16, wherein the
second elongate component matingly receives the first elongate
component therein.
[0207] Clause 18: The attachment system of any of the preceding
clauses, wherein the first elongate component includes a projection
extending from a surface of the prosthetic device, the projection
including a first portion disposed at a junction of the projection
and the surface of the prosthetic device and a second portion that
is spaced apart from the first portion and is received by the
second component.
[0208] Clause 19: The attachment system of Clause 18, wherein a
cross-section of the projection is wider at the second portion than
at the first portion.
[0209] Clause 20: The attachment system of Clause 19, wherein the
second component includes a channel, the channel and the projection
cooperating to selectively provide a dovetail connection between
the first elongate component and the second elongate component.
[0210] Clause 21: The attachment system of any of the preceding
clauses, wherein the sole structure includes a cushioning layer
disposed between the second elongate component and the
ground-engaging surface.
[0211] Clause 22: The attachment system of Clause 21, wherein the
ground-engaging surface is formed by the cushioning layer.
[0212] Clause 23: The attachment system of Clause 21, wherein the
ground-engaging surface is formed by an outsole layer that is
attached to the cushioning layer.
[0213] Clause 24: The attachment system of any of the preceding
clauses, further comprising a latch mechanism operable to
selectively fix a relative position between the first elongate
component and the second elongate component.
[0214] Clause 25: The attachment system of Clause 24, wherein the
latch mechanism is automatically moved into a latched state to fix
the relative position between the first elongate component and the
second elongate component when the first elongate component is
slidably moved into the second elongate component a predetermined
distance.
[0215] Clause 26: The attachment system of Clause 25, wherein the
latch mechanism includes a male component that is fixed for
movement with one of the first elongate component and the second
elongate component, and further includes a female component that is
fixed for movement with the other of the first elongate component
and the second elongate component, the female component receiving
the male component and securing the male component to the female
component when the first elongate component is moved the
predetermined distance into the second elongate component.
[0216] Clause 27: The attachment system of Clause 24, wherein the
latch mechanism includes a latching element fixed for movement with
one of the first elongate component and the second elongate
component and a latching feature fixed for movement with the other
of the first elongate component and the second elongate component,
the latching element operable to be moved relative to the one of
the first elongate component and the second elongate component to
engage the latching feature.
[0217] Clause 28: The attachment system of Clause 27, wherein the
other of the first elongate component and the second elongate
component includes a ramping surface operable to deflect the
latching element and to position the latching element into
engagement with the latching feature.
[0218] Clause 29: The attachment system of any of the preceding
clauses, wherein the prosthetic device is a foot prosthetic
device.
[0219] Clause 30: The attachment system of Clause 29, wherein the
foot prosthetic device is a blade prosthetic device.
[0220] Clause 31: The attachment system of any of the preceding
clauses, wherein the first elongate component is integrally formed
with the prosthetic device.
[0221] Clause 32: An attachment system for a prosthetic device, the
attachment system comprising a first component attached to the
prosthetic device and including a first latch mechanism and a
second component selectively attachable to the first component, the
second component including a second latch mechanism and a
ground-engaging surface, the second latch mechanism configured and
disposed to latchingly engage with the first latch mechanism when
the first component is moved a predetermined distance relative to
the second component in a first direction.
[0222] Clause 33: The attachment system of Clause 32, wherein the
second latch mechanism is disposed on an opposite side of the
second component than the ground-engaging surface.
[0223] Clause 34: The attachment system of any of the preceding
clauses, wherein second component is slidably attached to the first
component.
[0224] Clause 35: The attachment system of any of the preceding
clauses, wherein the first component includes one of a projection
and a channel and the second component includes the other of the
projection and the channel, the channel receiving the projection to
guide movement of the first component relative to the second
component.
[0225] Clause 36: The attachment system of Clause 35, wherein the
projection is matingly received by the channel and is permitted to
slide relative to and within the channel to permit movement of the
first component relative to the second component in the first
direction.
[0226] Clause 37: The attachment system of Clause 36, wherein the
projection includes a first end that is attached to one of the
first component and the second component and a second end that is
spaced apart from the first end and is received by the channel of
the other of the first component and the second component, the
projection having a cross-section that increases in width from the
first end to the second end to restrict removal of the projection
from the channel.
[0227] Clause 38: The attachment system of any of the preceding
clauses, wherein the second portion includes a cushioning layer
disposed between the prosthetic device and the ground-engaging
surface.
[0228] Clause 39: The attachment system of Clause 38, wherein the
ground-engaging surface is formed by the cushioning layer.
[0229] Clause 40: The attachment system of Clause 38, wherein the
ground-engaging surface is formed by an outsole layer that is
attached to the cushioning layer.
[0230] Clause 41: The attachment system of any of the preceding
clauses, wherein the first latch mechanism includes one of a male
component and a female component that is fixed for movement with
the first component and the second latch mechanism includes the
other of the male component and the female component, the female
component being fixed for movement with the second component and
receiving the male component to secure the male component to the
female component when the first component is moved the
predetermined distance in the first direction.
[0231] Clause 42: An attachment system for a prosthetic device, the
attachment system comprising a first component fixed for movement
with the prosthetic device and a second component that matingly
receives the first component and includes a ground-engaging
surface, the second component being automatically secured to the
first component when the first component is moved a predetermined
distance relative to the second component in a first direction.
[0232] Clause 43: The attachment system of Clause 42, wherein the
first component includes a first latch mechanism and the second
component includes a second latch mechanism.
[0233] Clause 44: The attachment system of Clause 43, wherein the
second latch mechanism engages the first latch mechanism when the
first component is moved the predetermined distance relative to the
second component in the first direction.
[0234] Clause 45: The attachment system of Clause 44, wherein the
first latch mechanism includes one of a male component and a female
component that is fixed for movement with the first component and
the second latch mechanism includes the other of the male component
and the female component, the female component being fixed for
movement with the second component and receiving the male component
to secure the male component to the female component when the first
component is moved the predetermined distance in the first
direction.
[0235] Clause 46: The attachment system of Clause 43, wherein the
second latch mechanism is disposed on an opposite side of the
second component than the ground-engaging surface.
[0236] Clause 47: The attachment system of any of the preceding
clauses, wherein second component is slidably attached to the first
component.
[0237] Clause 48: The attachment system of any of the preceding
clauses, wherein the first component includes one of a projection
and a channel and the second component includes the other of the
projection and the channel, the channel receiving the projection to
guide movement of the first component relative to the second
component.
[0238] Clause 49: The attachment system of Clause 48, wherein the
projection is matingly received by the channel and is permitted to
slide relative to and within the channel to permit movement of the
first component relative to the second component in the first
direction.
[0239] Clause 51: The attachment system of Clause 49, wherein the
projection includes a first end that is attached to one of the
first component and the second component and a second end that is
spaced apart from the first end and is received by the channel of
the other of the first component and the second component, the
projection having a cross-section that increases in width from the
first end to the second end to restrict removal of the projection
from the channel.
[0240] Clause 52: The attachment system of any of the preceding
clauses, wherein the second portion includes a cushioning layer,
the cushioning layer disposed between the prosthetic device and the
ground-engaging surface.
[0241] Clause 53: The attachment system of Clause 52, wherein the
ground-engaging surface is formed by the cushioning layer.
[0242] Clause 54: The attachment system of Clause 52, wherein the
ground-engaging surface is formed by an outsole layer that is
attached to the cushioning layer.
[0243] The foregoing description has been provided for purposes of
illustration and description. It is not intended to be exhaustive
or to limit the disclosure. Individual elements or features of a
particular configuration are generally not limited to that
particular configuration, but, where applicable, are
interchangeable and can be used in a selected configuration, even
if not specifically shown or described. The same may also be varied
in many ways. Such variations are not to be regarded as a departure
from the disclosure, and all such modifications are intended to be
included within the scope of the disclosure.
* * * * *