U.S. patent application number 11/268201 was filed with the patent office on 2006-06-01 for suspension walker.
Invention is credited to Jason L. Bradshaw.
Application Number | 20060116617 11/268201 |
Document ID | / |
Family ID | 34226706 |
Filed Date | 2006-06-01 |
United States Patent
Application |
20060116617 |
Kind Code |
A1 |
Bradshaw; Jason L. |
June 1, 2006 |
Suspension walker
Abstract
A suspension walker having a hard, outer boot shell with upright
brace members attached on either side and a soft boot receivable
thereon. The soft boot has a main pad in it with a removable,
fitting pad or pads on top of the main pad. A cuff member is also
provided that is securable to the patient's calf and to the upright
brace members. In use, the fitting pad is removed during the
initial fitting and subsequent uses to suspend the patient's foot
in the walker. The cuff member is also infinitely adjustable along
the brace members to vary the fit as desired.
Inventors: |
Bradshaw; Jason L.; (Eaton,
CO) |
Correspondence
Address: |
DORR, CARSON & BIRNEY, P.C.;ONE CHERRY CENTER
501 SOUTH CHERRY STREET
SUITE 800
DENVER
CO
80246
US
|
Family ID: |
34226706 |
Appl. No.: |
11/268201 |
Filed: |
November 7, 2005 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
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10658069 |
Sep 9, 2003 |
6976972 |
|
|
11268201 |
Nov 7, 2005 |
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Current U.S.
Class: |
602/23 |
Current CPC
Class: |
A61F 5/0111 20130101;
A61F 5/0195 20130101; A61F 13/06 20130101 |
Class at
Publication: |
602/023 |
International
Class: |
A61F 5/00 20060101
A61F005/00 |
Claims
1-41. (canceled)
42. (not entered)
43. The suspension walker of claim 42 wherein said cuff member is
infinitely, adjustably securable to said brace members by
respective pairs of mating hook and loop fasteners respectively
mounted vertically along said cuff member and each of said brace
members.
44. The suspension walker of claim 43 wherein each brace member has
inner and outer sides and one of each pair of mating hook and loop
fasteners is mounted vertically on the inner side of each brace
member.
45. The suspension walker of claim 42 wherein said cuff member is
releasably securable about the calf of the patient by laces.
46. (not entered)
47-48. (canceled)
Description
RELATED APPLICATION
[0001] This application is a continuation of U.S. patent
application Ser. No. 10/658,069 filed Sep. 9, 2003, which is
incorporated herein by reference.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] This invention relates to the field of suspension walkers
and more particularly to the field of such walkers that transfer
weight normally borne by the patient's foot to his or her calf.
[0004] 2. Discussion of the Background
[0005] Many people and diabetics in particular develop sores or
ulcers on the soles of their feet. To heal, they must either stay
off their feet altogether or use a pressure relieving orthosis or
brace. Generally, these orthoses are of two designs.
[0006] In the first design as typified by U.S. Pat. No. 5,761,834
to Grim, the orthosis is provided with adjustable pads (see its
FIGS. 7-12) in which the contour and/or density of the pad sections
is modified. In the modification of FIG. 8 of this patent, for
example, a piece of a sectionalized pad is removed at 186 in an
effort to relieve pressure on the area of the sore. This first
approach has not met with great success as the gap (in the case of
FIG. 8 of this patent) or the contour/density changes of the other
figures of this patent tend to present their own pressure or
rubbing points and may make new sores or make the existing sore
worse. The removed section in particular often creates a suction on
the sore as the patient walks that aggravates it in addition to the
sides of the gap rubbing on the area around the sore creating new
sores.
[0007] In a second design commonly known as custom suspension
walkers, the concept is to transfer some of the weight normally
borne by the foot to the patient's calf. In doing so, a leather or
similar wrap or cuff fits around the calf of the patient wherein
the cuff is secured to the patient's calf and to upright braces
extending downwardly to a hard boot or shoe. In use, a large
portion (e.g., 50%) of the patient's weight is then transferred to
his calf and off of his foot. In essence, the patient's foot is
suspended at least to the extent of the weight borne by the calf
via the cuff and braces extending downwardly to the shoe.
[0008] In one prior technique for making a suspension walker, a
negative cast of the patient's foot is first taken. The cast is
then cut down the front so the patient can remove his foot and the
cut cast is sent to a custom manufacturer. The manufacturer can
subsequently follow one of many procedures to make a custom walker.
In one procedure, a positive cast is made from the hollow, negative
cast and a leather cuff is sweated (tightly fitted) about the calf
area. The cuff is then mounted on the vertical braces at a height
slightly greater (e.g., 1/2 inch) than the true position of the
original cast. In use, the person puts his calf in the cuff and
laces it up. In doing so, the cuff fits the calf but since the cuff
has been raised on the braces, the effect is that the foot is
slightly suspended in the shoe with the calf via the cuff and
braces now bearing some of the patient's weight.
[0009] In another procedure, the negative cast is cut below where
the cuff would be and a spacer inserted to in essence raise the
normal position of the calf and cuff. The leather cuff is then
sweated (fitted) to the calf of the positive cast but unlike the
first procedure, the cuff can be attached to the brace members at
the same level as the cast and does not need to be raised. Because
the positive cast has the calf area slightly higher than normal,
the end result is thus the same as in the first procedure (i.e.,
weight is transferred to the calf and the foot is suspended).
[0010] Current suspension walkers and the fitting techniques
discussed above are very effective; however, they have two, primary
drawbacks. First and foremost is the time. That is, the injured
patient normally needs a walker at the same time (i.e.,
immediately) he complains of or is diagnosed with the sore.
However, the custom manufacture and the fitting procedures
mentioned above normally take days and often weeks. The patient
also usually needs to make a follow-up visit to the doctor or
manufacturer to make sure the fit is correct and he knows how to
use the walker. Second, custom walkers are relatively expensive as
they are very labor intensive at the manufacturer level and as
previously indicated normally require multiple fitting trips to the
physician, practitioner, or therapist in addition to the original
casting person.
[0011] With the above in mind, the present invention was developed.
With it, a suspension walker is provided that can be immediately
fitted to the patient in the office of the physician, practitioner,
or therapist. The walker avoids the need for taking castings and
the custom work mentioned above. It can also be made available in
prefabricated sizes and for less expense as there is very little
labor involved in fitting the walker to the patient and training
the patient in its proper use.
SUMMARY OF THE INVENTION
[0012] This invention involves a suspension walker. The walker
includes a hard, outer boot shell with upright brace members
attached on either side. A soft boot is received in the shell and
has a main pad in it with a removable, fitting pad or pads on top
of the main pad. The soft boot has a tongue and two side flaps that
open up to expose the inside of the soft boot and to receive the
patient's foot. A cuff member is also provided that is securable to
the patient's calf and to the upright brace members. To fit the
patient, the cuff member is attached comfortably about the
patient's calf and then the patient puts his foot into the open
boot. Normally, the patient is sitting down as he puts his foot
into the boot atop the main pad and the removable, fitting pad. Up
to this point, the upright brace members preferably have plastic
covers over them. In this regard, the cuff member has one portion
of hook and loop or VELCRO.RTM. fasteners on each outer side.
Additionally, the brace members have the other portions of hook and
loop fasteners on their respective insides. In this way and with
the patient's foot in a fitted position in the soft boot, the
plastic covers can be removed from the brace members wherein the
cuff member will be secured to the brace members at the desired
position via the hook and loop fasteners.
[0013] The fitting pad can then be manually removed and the tongue
and side flaps of the soft boot closed with the result that the
foot is at least partially suspended via the cuff and brace members
on the main pad. In a typical procedure, the fitting pad may be 1/2
inch thick for the fitting step wherein 50% or so of the patient's
weight is transferred off the foot to the calf and via the cuff and
brace members to the hard, outer boot shell.
[0014] With this new design, the suspension walker is immediately
available for use by the patient to begin healing the sore.
Additionally, the physician, practitioner, or therapist can easily
and quickly set the proper or desired degree of weight suspension
by using different thicknesses of the removable, fitting pad or
pads (e.g., 1/4 or 1/2 inch pad or the two together to equal a 3/4
inch pad). This is done at the first office visit with immediate
feedback from the patient on how it feels versus the often
imprecision and follow-up fittings nearly always needed with
present custom walkers, which have many steps done without the
patient present.
[0015] Another fundamental advantage of the present design is that
the patient on subsequent days can then duplicate the fitting
originally done by the physician, practitioner, or therapist. In
doing so, the patiently only has to re-insert the fitting pad(s)
into the soft boot with the cuff member already attached in the
desired position to the brace members by the hook and loop
fasteners. The cuff member can subsequently be laced up with the
patient's foot in the soft boot followed by the removal of the
fitting pad(s). In contrast, the prior walkers required some
experimentation and mental input by the patient on subsequent days
to try to duplicate the exact location of the cuff member on the
calf to give the desired amount of suspension. With diabetic
patients that often have little feeling in their feet and legs,
this can be a substantial problem. Further, if the original fit
needs to be modified (e.g., thicker or thinner fitting pad), the
hook and loop fasteners between the cuff and brace members can be
readily and infinitely adjusted. This is an important advantage as
the area of the patient's leg/foot often changes (e.g., swells or
atrophies) over time. Further, the present design can be
prefabricated in various sizes greatly reducing the cost over
current, custom walkers made from castings of the patient's foot
and lower leg.
BRIEF DESCRIPTION OF THE DRAWINGS
[0016] FIG. 1 is a perspective view of the suspension walker of the
present invention.
[0017] FIG. 2 is an exploded view of the suspension walker.
[0018] FIG. 3 is a side elevational view of the hard, outer boot
shell and the soft boot received thereon.
[0019] FIG. 4 is a perspective view of the soft boot of the
suspension walker.
[0020] FIG. 5 is a side elevational view of the soft boot of FIG.
4.
[0021] FIG. 6 is a side elevational view of the soft boot with its
side flaps and tongue open to receive the patient's foot.
[0022] FIG. 7 is a top plan view of FIG. 6.
[0023] FIGS. 8-13 illustrate the preferred fitting method of the
present invention.
[0024] FIG. 14 is a view taken along line 14-14 of FIG. 13
illustrating one of the strap members that can be wrapped around
the brace members.
[0025] FIG. 15 illustrates the use of a second, removable fitting
pad in the fitting method of the present invention.
[0026] FIGS. 16 and 17 illustrate the manner in which the patient
can subsequently put on the suspension walker to duplicate the
original fitting position set by the physician, practitioner, or
therapist. FIGS. 16 and 16a also illustrate how the physician,
practitioner, or therapist can choose from a variety of different,
prefabricated sizes of each piece of the suspension walker to best
fit the patient.
[0027] FIGS. 18 and 19 illustrate the elastic, heel section of the
cuff member to aid the patient in putting on and taking off the
cuff member.
[0028] FIGS. 20-22 including FIG. 20a illustrate an alternate
manner of releasably securing the cuff member to the patient's calf
combing the benefit of the even pressure of laces with the
convenience of a quick attachment arrangement such as hook and loop
fasteners.
DETAILED DESCRIPTION OF THE INVENTION
[0029] As best seen in FIG. 1, the suspension walker 1 of the
present invention includes a hard, outer boot shell 3 with upright
brace members 5 respectively extending upwardly to positions
adjacent each side of the patient's calf 2. Positioned within the
boot shell 3 is a soft boot 7 to receive the patient's foot. The
suspension walker 1 further includes a cuff member 9 securable by
laces 11 or other means to the patient's calf 2 and securable by
pairs of mating hook and loop fasteners 13 and 15 (see also FIG. 2)
to the upright brace members 5 of the hard, outer boot shell 3. The
pairs of hook and loop fasteners 13 and 15 or other releasable
attaching means as illustrated in FIGS. 1 and 2 preferably have one
member (e.g., hook fastener 13 in FIG. 2) of each pair extending
vertically along the inside surfaces of the brace members 5 and the
other member (e.g., loop fastener 15) of each fastener pair mounted
on each outer side of the cuff member 9.
[0030] The hard, outer boot shell 3 and soft boot 7 as shown in
FIG. 3 are removably attached to each other (e.g., by hook and loop
fasteners 17 and 19). The soft boot 7 itself (see FIG. 4) has
foldable side flaps 21 and 23 and a foldable tongue 25 with an
adjustable heel area of overlapping and releasably securable pieces
27 and 29. The soft boot 7 as further illustrated in FIGS. 5-7 has
a main pad 31 (which can be multi-layered as shown with layers 31'
and 31'' or a single layer) and a removable, fitting pad 33 stacked
atop the main pad 31 (see FIG. 5). The fitting pad 33 preferably
has a finger loop 35 on the toe end thereof and flaps 21, 23 and
tongue 25 of the soft boot 7 can be opened as shown in FIGS. 6 and
7.
[0031] In the preferred fitting method of the present invention as
shown in FIGS. 8-13, the cuff member 9 is secured by the laces 11
about the patient's socked calf 2 (see FIG. 8). With the flaps
21,23 and tongue 25 of the soft boot 7 opened (see again FIG. 8)
and with tubular, plastic cover member 37 preferably over each
brace member 5, the patient's foot 4 is received in the soft boot 7
(FIG. 10) atop the removable, fitting pad 33. The tubular cover
members 37 (see FIGS. 8 and 9) in this regard are preferably
positioned over the brace members 5 at this point to act as
barriers to the engagement of the pairs of hook and loop fasteners
13 and 15 respectively on the insides of the brace members 5 and
the outer sides of the cuff member 9. Consequently, the cuff member
9 can be readily slid between and past the brace members 5 from the
position of FIG. 8 to the position of FIG. 10. The patient can be
standing during this but is preferably sitting as in FIG. 10 to
comfortably place his or her foot 2 in the soft boot 7 atop the
removable, fitting pad 33 preferably with less than his or her full
normal weight on the foot 4 and removable, fitting pad 33.
[0032] With the patient's calf 2 and foot 4 positioned as desired
by the physician, practitioner, or therapist in FIG. 10, the
fitting method then proceeds wherein the tubular cover members 37
(which to this point have acted as barriers to the engagement of
the pairs of hook and loop fasteners 13 1 and 15) are removed as
illustrated in FIG. 11. The pairs of mating hook and loop fasteners
13 and 15 are then secured together as also shown in FIG. 11. With
the cuff member 9 secured to the vertically extending, upright
brace members 5, the fitting pad 33 can now be removed (see FIG.
12) by, for example, hooking a finger in the loop 35 on the end of
the fitting pad 33. The side flaps 21, 23 and tongue 25 are
thereafter closed over the patient's foot 4 (see FIG. 13) with
flaps 21 and 23 fastened together with hoop and loop fasteners.
Straps such as 39 in FIGS. 1 and 2 if desired can be included over
the closed flaps 21 and 23 to comfortably hold the patient's foot 4
in place. Further, if desired, one or more strap members 41 (see
FIGS. 13 and 14) can be wrapped around and secured to the outsides
of the brace members 5 via hook and loop fasteners 13' and 43 (see
FIG. 14) to aid in keeping the brace members 5 and cuff member 9
securely attached to one another. The strap members 41 in this
regard can be a simple arrangement of buckle 45 and elongated strip
47 as in FIG. 14 extending about the brace members 5 and back on
itself through the buckle 45. The strip 47 can then be additionally
secured in place to itself by hook and loop fasteners 49 and 51
along the overlapping sides of the strip 47.
[0033] In the position of FIG. 13 following the fitting method of
FIGS. 8-13, the patient's foot 4 is now at least partially
suspended in the walker 1. That is, at least a portion of the
patient's weight normally applied to his or her foot 4 is now
transferred to and borne by the patient's calf 2 via the cuff
member 9 secured to the brace members 5 of the hard, outer boot
shell 3. Consequently, as the patient walks or otherwise moves
around, the patient's foot 4 does not bear the weight it normally
would. Depending upon how the patient is moving and any other aids
he or she may be using (e.g., crutches, cane), whatever weight that
would normally be applied to the foot 4 is at least partially
transferred to his or her calf 2 and off of the foot 4. With the
patient only using the suspension walker 1 of FIG. 13 of the
present invention, the weight transferred during a normal stride
with the other foot off the ground could be virtually any
percentage, but preferably is in the range of at least 10%-75% and
more preferably in the range of 40%-60%. In most cases, the higher
the percentage of weight transferred, the better including up to
100% if the patient can otherwise safely handle it (e.g., maintain
his or her balance). In most applications, the patient's heel as
shown in FIG. 13 will actually be spaced or suspended (e.g., 3/16
or 1/4 inch) above the main pad 31.
[0034] To assist in fitting the patient to transfer as much as
desired of his or her such normal weight to the calf 2, the
removable, fitting pad 33 can be made as thick or thin as needed.
Also, a second, removable fitting pad such as 33' in FIG. 15 with
finger loop 35' (or any additional number of them) can be placed
atop the first fitting pad 33. In this regard, it is anticipated
the fitting pad 33, for example, may be 1/2 inch thick and the
second fitting pad 33' on the order of 1/4 inch thick. The fitting
pads 33 and 33' could then be used individually (i.e., as separate
1/2 or 1/4 inch adjustments) or together as in FIG. 15 to make an
adjustment of 3/4 inch. It is noted as to the range of the relative
positioning of the cuff member 9 vertically on the brace members 5
that the cuff member 9 is preferably infinitely adjustable to as
precisely as possible fit the patient's needs. That is, the cuff
member 9 of the preferred embodiment can be positioned at virtually
any desired location vertically along each brace member 5 within
the limits of the overlapping, vertically extending hook and loop
fasteners 13,15. The cuff member 9 is thus infinitely, adjustably
securable to each brace member 5 in any desired location vertically
along a predetermined length of each brace member 5. Also, the
fasteners 15 of the cuff member 9 could be portions of one,
continuous member but preferably are separate strips as shown. It
is additionally noted that the hook and loop fasteners mentioned
throughout the description of the invention could be any other
releasable securing means but hook and loop ones are preferred.
[0035] A great advantage of the fitting method of FIGS. 8-13 is
that it can be done in one, simple visit with the physician,
practitioner, or therapist. In contrast as discussed above, custom
suspension walkers often take weeks and multiple trips to make and
fit. Additionally and to the extent it is desirable to adjust the
fit of FIGS. 8-13, the fitting method can be easily and quickly
redone to position the cuff member 9 at virtually any number of
infinite locations along the brace members 5. A further advantage
of the present invention is that virtually all of the pieces (e.g.,
boot shell 3, soft boot 7, and cuff member 9 of FIG. 16) of the
suspension walker 1 can be prefabricated in various sizes, as for
example, the respective smaller sizes of boot shell 3', soft boot
7', and cuff member 9' of FIG. 16a. In this manner, the physician,
practitioner, or therapist can easily select the proper size of
each piece from a variety of them on hand. The patient can then be
properly fitted and begin using the suspension walker 1 immediately
to relieve weight from the damaged foot and to begin the healing
process. No waiting or delay to receive the walker is involved.
With diabetic and other patients as discussed above, this is
extremely important.
[0036] Once the initial, fitting process is accomplished as in
FIGS. 8-13, the same fit and unweighting of FIG. 13 can be
subsequently duplicated by the patient by himself or herself on
later uses of the suspension walker 1 of the present invention.
More specifically and as illustrated in FIGS. 16 and 17, the
patient in subsequent uses need only place his or her foot 4 into
the cuff member 9 (FIG. 16) and atop the removable, fitting pad 33
of FIG. 17. The removable, fitting pad 33 in this regard has been
replaced atop the multi-layered main pad 31 after the prior use of
the suspension walker 1. In the position of FIG. 17, the laces 11
or other securing means can then be tightened to secure the cuff
member 9 to the calf 2. The steps of FIGS. 12 and 13 can thereafter
be repeated and the suspension walker 1 is again properly fitted in
the identical position originally set by the physician,
practitioner, or therapist. As an aid to sliding the patient's foot
4 into and out of the cuff member 9, an elastic, expandable heel
section 53 is provided at the lower rear area of the cuff member 9
(see FIGS. 18 and 19). In use as best seen in FIG. 18, the heel
section 53 expands as the patient would pull up on the cuff member
9 while inserting his or her foot 4. Conversely, in removing the
cuff member 9, the heel section 53 expands as the patient would
push down on the cuff member 9 while withdrawing his or her foot
4.
[0037] As mentioned above and although hook and loop fasteners have
primarily been used throughout the description of the present
invention to releasably secure or attach the various members
together, other releasable securing means (e.g., buckles, straps,
snaps, buttons) could be used if desired. Also, the suspension
walker 1 preferably uses laces 11 to removably secure the cuff
member 9 to the patient's calf 2 although other securing means
(e.g., hook and loop fasteners, buckles, snaps) could be used.
Laces in this use are preferred as they create a more evenly
distributed pressure over the calf area.
[0038] In this last regard, FIGS. 20-22 illustrate an alternate way
of releasably securing the cuff member 9 to the patient's calf 2.
This alternative manner combines the benefit of laces (i.e., even
pressure) with the convenience of a quick attachment arrangement
(e.g., hook and loop fasteners). More specifically as shown in FIG.
20, each set of upper and lower laces 11 is passed through eyelets
55 on each side piece 9' of the cuff member 9. The free ends 11' of
the laces 11 are then gathered and releasably secured in place
adjacent one of the side pieces 9' by respective clamp members 57
(see FIG. 20a). The clamp members 57 can be free standing as in
FIGS. 20 and 20a or mounted to the side piece 9' if desired. The
two sets of laces 11 as shown in FIG. 20 are preferably provided in
a mirror image manner. In use, the strips 59 to which the other
ends 11'' of the laces 11 are attached (e.g., sewn) are thereafter
crossed over (see FIG. 21) to the respective other side 9' of the
cuff member 9 to pull the respective sets of laces 11 tight. The
strips 59 are subsequently wrapped around the brace members 5 and
cuff member 9 and around on themselves as in FIG. 22. The strips 59
(see FIG. 20) like straps 41 in FIGS. 13 and 14 have mating hook
and loop fasteners 61 and 63 on opposite sides of each strip 59 and
can thereby be secured in place (FIG. 22) to each other and to the
brace members 5. An additional, top strip 65 between buckles 67 as
shown in FIG. 22 can also be provided if desired and similarly
secured in place by hook and loop fasteners.
[0039] In the alternative manner of FIGS. 20-22, the cuff member 9
can be easily and quickly put on and taken off the patient's calf
2. Additionally if needed, the effective lengths of the laces 11 of
each set can be individually or collectively shortened by releasing
the clamp members 57 (e.g., depressing member 58 in FIG. 20a) and
pulling the lace ends 11' away from the cuff member 9 in FIG. 20.
Similarly, the effective lengths can be lengthened by pulling the
other lace ends 11'' or attached strips 59 away from the cuff
member 9 with the clamp members 57 released. As indicated above and
with the alternate design of FIGS. 20-22, the benefit of laces
(i.e., even pressure) with the convenience of a quick attachment
method (e.g., hook and loop fasteners) is achieved. Although
specifically shown in use to releasably secure the cuff member 9
about the patient's calf 2, the alternate design of FIGS. 20-22
could be used to removably secure any member about any part of the
patient's body or about any object.
[0040] While several embodiments of the present invention have been
shown and described in detail, it to be understood that various
changes and modifications could be made without departing from the
scope of the invention.
* * * * *