U.S. patent application number 11/057598 was filed with the patent office on 2005-09-01 for modular harness assembly and mobility system.
Invention is credited to Heinrichs, Stephen, Jackson, Kurt J..
Application Number | 20050192159 11/057598 |
Document ID | / |
Family ID | 34889864 |
Filed Date | 2005-09-01 |
United States Patent
Application |
20050192159 |
Kind Code |
A1 |
Jackson, Kurt J. ; et
al. |
September 1, 2005 |
Modular harness assembly and mobility system
Abstract
A modular harness assembly worn by a person during physical
exercise or rehabilitation. The modular harness assembly includes a
non-stretchable waist belt that is secured around the waist of the
patient or user, and can be associated with one or more auxiliary,
non-stretchable harness component that can easily be added or
removed from the waist belt. The auxiliary harness components can
include a shoulder harness, a thigh harness having a movable
connection to the waist belt proximate the hip joint, and a pelvic
harness. The modular harness assembly can be used in combination
with a hoisting system such as a block and tackle pulley system
that is mounted onto a rolling carriage and an overhead rail.
Inventors: |
Jackson, Kurt J.; (Dayton,
OH) ; Heinrichs, Stephen; (Clayton, OH) |
Correspondence
Address: |
HASSE & NESBITT LLC
7550 CENTRAL PARK BLVD.
MASON
OH
45040
US
|
Family ID: |
34889864 |
Appl. No.: |
11/057598 |
Filed: |
February 14, 2005 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
60521066 |
Feb 13, 2004 |
|
|
|
Current U.S.
Class: |
482/23 |
Current CPC
Class: |
A45F 2003/008 20130101;
A61H 3/008 20130101; A61H 2201/163 20130101; A45F 3/14 20130101;
A61H 2201/1652 20130101; A45F 2003/045 20130101; A61H 2201/1616
20130101; A61H 2201/0192 20130101; A61H 2201/1621 20130101; A61H
2201/0107 20130101; A61H 2201/1642 20130101; A45F 2003/144
20130101 |
Class at
Publication: |
482/023 |
International
Class: |
A63B 026/00; A45F
004/00; A45C 015/00 |
Claims
1. A modular harness assembly worn by a person during physical
exercise or rehabilitation, comprising: a) a non-stretchable waist
belt having a length, b) at least one auxiliary, non-stretchable
harness component releasably affixed to the waist belt, selected
from the group consisting of: 1) a non-stretchable shoulder harness
comprising a shoulder strap across the top of each shoulder in use,
each shoulder strap comprising a shoulder connector proximate the
top of the shoulder; 2) a non-stretchable thigh harness having a
distal end affixed to the waist belt at a location proximate to the
hip joint; 3) a non-stretchable pelvic harness comprising a pair of
straps configured proximate the groin of the user; and 4) a
combination thereof.
2. The modular harness system of claim 1 further comprising a
plurality of connectors for attachment of optional exercise
equipment to the harness assembly.
3. The modular harness system of claim 1 wherein the waist belt and
the additional harness component do not use a mechanical
hook-and-loop fastener for securement thereof to the body of the
person.
4. The modular harness system of claim 1 wherein the additional,
non-stretchable harness component comprises the shoulder
harness.
5. The modular harness system of claim 4 wherein the shoulder
strap, in use, is snuggly positioned proximate the top of the
shoulder.
6. The modular harness system of claim 4 wherein the shoulder
harness is affixed to the waist belt using at least three seat-belt
type connectors.
7. The modular harness system of claim 1 wherein the additional,
non-stretchable harness component comprises the thigh harness.
8. The modular harness system of claim 7 wherein the distal end of
the thigh harness is moveable laterally along the circumference of
the waist belt.
9. The modular harness system of claim 7 wherein the harness
further comprises a thigh cuff that is configured to surround the
thigh of the person, and wherein the affixed distal end has a
distal connector configured for attachment to waist belt and for
lateral movement along the circumference of the waist belt.
10. The modular harness system of claim 9 wherein the waist belt
has a belt connector comprising a guide strap having first and
second ends affixed to the waist belt, and wherein the distal
connector comprises a loop that encircles the guide strap.
11. The modular harness system of claim 1 wherein the additional,
non-stretchable harness component comprises the pelvic harness.
12. The modular harness system of claim 11 wherein the straps of
the pelvic harness are secured to the waist belt.
13. A mobility system for use in providing exercise and
rehabilitation for a person, comprising: a) a modular harness
system worn by the person, comprising a non-stretchable waist belt,
and at least one additional, non-stretchable harness component
removably affixed thereto; b) an overhead rail, and c) a
non-motorized hoist assembly that is moveable along the overhead
rail, having at least one hoist connector for exerting an upward
force upon the harness system, the hoist assembly comprising a
block and tackle pulley, the hoist assembly being configured to
have a mechanical advantage of 2:1 or more.
14. The mobility system of claim 13 wherein the hoist assembly has
a mechanical advantage of 4:1.
15. The mobility system of claim 13 wherein the pulley device has a
locked configuration wherein a cord of the block and tackle pulley
can not pass through the pulley.
16. The mobility system of claim 13 further comprises a brake means
to physically prevent a cord of the block and tackle pulley from
passing through the pulley.
17. The mobility system of claim 13 wherein the additional harness
component comprises a shoulder harness having a pair of shoulder
straps, each having a shoulder connector disposed proximate the top
of the shoulder.
18. The mobility system of claim 17 wherein the hoist assembly
comprises two hoist connectors, each connected to a shoulder
connector of the shoulder harness.
19. A method of providing exercise and rehabilitation for a person,
comprising the steps of: a) attaching to a person a modular harness
system comprising a non-stretchable waist belt, and at least one
additional, non-stretchable harness component removably affixed
thereto, having at least one connector, b) securing a hoist
connector of a non-motorized pulley assembly to the one harness
connector, the non-motorized pulley assembly having a hoisting
mechanical advantage of at least 2:1, and c) hoisting the person
with the non-motorized hoist assembly into a position for
performing a physical activity.
20. The method of claim 19 wherein the additional harness component
comprises a shoulder harness comprising a shoulder strap across the
top of each shoulder in use, each shoulder strap having a shoulder
connector proximate the top of the shoulder, and wherein the step
of hoisting comprises hoisting the harness connectors at the
shoulders.
Description
BACKGROUND
[0001] It has become an accepted and common practice to use
harnesses to support a portion of a patient's body weight during
rehabilitation. Harness supported activity allows for a more
aggressive rehabilitation approach, protecting both the patient and
the therapist from injury while allowing more advanced activities
to occur. There are a number of commercially available body weight
support systems, each using different types of harnesses.
Unfortunately, none of the current harnesses adequately meet the
needs of diverse patient populations for one or more reasons.
Current harnesses can be difficult to apply and remove, especially
with patients who are unable to stand for harness application.
Current harnesses can also lack adjustability to accommodate
patients of various sizes, body shapes and diagnoses, and can
restrict normal leg movement during walking. Current harnesses can
also lack comfort due to excessive contact pressures in certain
body areas, and often can not be used for therapeutic activities
other than gait training.
SUMMARY OF INVENTION
[0002] The present invention provides a modular harness assembly
worn by a person during physical exercise or rehabilitation,
comprising: a) a non-stretchable waist belt having a length, b) at
least one auxiliary, non-stretchable harness component releasably
affixed to the waist belt, selected from the group consisting of:
1) a non-stretchable shoulder harness comprising a shoulder strap
across the top of each shoulder in use, each shoulder strap
comprising a shoulder connector proximate the top of the shoulder;
2) a non-stretchable thigh harness having a distal end affixed to
the waist belt at a location proximate to the hip joint; 3) a
non-stretchable pelvic harness comprising a pair of straps
configured proximate the groin of the user; and 4) a combination
thereof.
[0003] The present invention also relates to a mobility system for
use in providing exercise and rehabilitation for a person,
comprising: a) a modular harness system worn by the person,
comprising a non-stretchable waist belt, and at least one
additional, non-stretchable harness component removably affixed
thereto; b) an overhead rail, and c) a non-motorized hoist assembly
that is moveable along the overhead rail, having at least one hoist
connector for exerting an upward force upon the harness system, the
hoist assembly comprising a block and tackle pulley, the hoist
assembly being configured to have a mechanical advantage of 2:1 or
more.
[0004] The invention also relates to a method of providing exercise
and rehabilitation for a person, comprising the steps of: a)
attaching to a person a modular harness system comprising a
non-stretchable waist belt, and at least one additional,
non-stretchable harness component removably affixed thereto, having
at least one connector, b) securing a hoist connector of a
non-motorized pulley assembly to the one harness connector, the
non-motorized pulley assembly having a hoisting mechanical
advantage of at least 2:1, and c) hoisting the person with the
non-motorized hoist assembly into a position for performing a
physical activity.
BRIEF DESCRIPTION OF THE DRAWINGS
[0005] FIG. 1 shows a plan view waist belt for use with the modular
harness assembly of the present invention.
[0006] FIG. 2 shows a cross sectional view of the waist belt
through line 2-2 of FIG. 1.
[0007] FIG. 3 shows a perspective view of the modular harness
assembly worn by a patient, including the waist belt and a shoulder
harness
[0008] FIG. 4 shows a perspective view of the shoulder harness of
FIG. 3.
[0009] FIG. 5 shows a perspective view of a thigh harness.
[0010] FIG. 6 shows a perspective view of the modular harness
assembly worn by a patient, including the waist belt and the thigh
harness
[0011] FIG. 7 shows a plan view of a pelvic harness
[0012] FIG. 8 shows a perspective view of the modular harness
assembly worn by a patient, including the waist belt and the pelvic
harness
[0013] FIG. 9 shows a perspective view of a hoist assembly for use
with the modular harness to provide a mobility system.
DETAILED DESCRIPTION OF THE INVENITON
[0014] Definitions
[0015] By "non-stretchable" is meant that a webbing strap, or a
harness comprising a webbing strap, will not elongate, along the
length of the webbing strap, by more than 5%, more typically by
more than 2%, and most typically by more than 1%, when elongated by
a force differential of 100 pounds.
[0016] This present invention provides an improved therapeutic
harness that overcomes the many limitations of conventional
harnesses used in rehabilitation. The modular harness assembly
comprises a waist belt harness and at least one auxiliary harnesses
selected from a shoulder harness, at least one thigh harness, and a
pelvic harness. These components can be used in various
configurations to accomplish numerous therapeutic activities and
fit a wide variety of patients.
[0017] Waist Belt
[0018] The primary component of the modular harness assembly is a
waist belt that has a length that when worn forms a circumference.
The waist belt is configured so that the auxiliary harness
components can be easily attached thereto or removed therefrom via
quick release buckles. As shown in FIGS. 1, 2 and 3, the waist belt
10 typically comprises a padded member, shown as an elongated pad
12 having a skin-contacting inner surface and an outer surface,
which is configured to encircle a portion of the user's waist W.
The padded inner surface provides skin comfort. The pad has along
its length a top edge 14 oriented towards the head of a user
wearing the waist belt, and an opposed bottom edge. The waist belt
also comprises a webbing strap 16 that is configured to encircle
the waist and is affixed to the outer surface of the pad 12.
[0019] The waist belt 10 is typically configured into a left half
and a right half, each respective half having a coupling end 18a,
18b, and an affixed end 19a, 19b that is affixed to the affixed end
of the other belt half. In normal use, the waist belt is worn such
that the left half of the belt encircles the left side of the
user's waist, and the right half of the waist belt encircles the
right side of the user's waist, with the left coupling end 18a and
the right coupling end 18b positioned in front of the user. The
left coupling end and the right coupling end typically extend
beyond the pad 12 and are typically affixed to or positionally
associated with opposed ends of a releasable securement 20,
typically comprising a pair of mating securing members 20a and 20b.
The securing member 20a has a slot through which the length of the
webbing strap 16 can pass for positioning the securing member 20a
between the strap tip 22 and the end of the pad, for adjustment of
the overall length of the waist belt to accommodate the waist sizes
of various users. A typical releasable securement 20 is a snap
buckle, such as an Airloc Side Release Buckle, available from ITW
Nexus U.S, Des Plaines, Ill., or a Side Release Buckle, available
from Fasnap.RTM. Corporation, Elkhart, Ind. Such snap buckles are
typically made of a plastic material and are available in a variety
of sizes to accommodate webbing straps of various widths.
[0020] The webbing strap 16 is typically inelastic and is affixed
to the pad at intermittent locations along the length of the strap,
about the waist, whereby the affixment points 24 of the strap to
the pad 12 on the left side of the waist belt 10 mirror those on
the right side of the waist belt. More typically, the webbing is
sewn to the outside of the pad to provide a plurality of segments
26a, 26b, and 26c, each segment being affixed at each end to the
pad, and being free from attachment along its length. The waist
belt typically comprises at least a left side segment 26a that is
proximate to the left hip, and a right side segment 26b that is
proximate the right hip. The left side and right side segments 26
provide a guide strap for a hip loop, described below. The length
of the guide strap is typically sufficient to provide the distal
connector of the thigh harness with lateral movement along a path
of 5-15 cm.
[0021] For affixment of an auxiliary shoulder harness, described
herein after, the waist belt further comprises four buckle latches
28a, 28b, 28c, 28d that are affixed with a short loop of inelastic
webbing strap at selected positions proximate to and along the top
edge 14 of the waist pad 12. The buckle connector comprising the
tongue and latch is typically a conventional automobile belt
buckle.
[0022] For affixment of an auxiliary thigh harness, described
herein after, the waist belt further comprises a pair of hip loops
30 formed from inelastic webbing strap, each hip loop 30 configured
to encircle and move freely along the lateral length of the left
side segment 26a and right side segment 26b, respectively, of the
waist strap 16 proximate to the hip joints. Each hip loop 30
further comprises one member 32 of a snap buckle extending downward
therefrom, which can be affixed to its mating second member 96 that
is affixed to the aforementioned thigh harness 90, shown in FIGS. 5
and 6. The connection formed by the mating members 32 and 96
provides a distal connector that comprises the hip loop 30, which
provides a movable connection for the thigh harness to the waist
belt.
[0023] The waist belt 10 typically also comprises a plurality of a
connector, such as a "D" ring 34, which can be secured to, for
movement along, a segment 26a or and 26b of the waist strap 16.
Typically, three "D" rings 34 are affixed to the waist belt, with
one on each of the left side segment and the right side segment,
and proximate the back of the waist belt. These connectors provide
attachment to the waist belt of additional exercise equipment.
[0024] The webbing waist strap 16 and the webbing loops 30 that are
used to affix buckles 28, couplings 32, and connectors 34 to the
waist belt 10 are preferably made of non-stretchable material.
While the pad 12 can be slightly stretchable, it too is typically
non-stretchable. Stretchable harness components can allow the
harness to migrate on the body during activity. To improve the fit
and to reduce slippage of the waist belt, a non-slip material can
be applied to the inside surface of the pad 12. The non-slip
material can be applied directly to the pad, or a non-slip layer of
the material can be sewn to the pad. Preferably, the non-slip
material covers each outer third of the length of the pad 12. A
preferred non-slip material is TUFFTEX.RTM., and gReptile,
available from 3M Company.
[0025] Shoulder Harness
[0026] The shoulder harness 50, shown in FIGS. 3 and 4, comprises a
pair of shoulder pads 52a, 52b having a skin-contacting inner
surface and an outer surface, each configured to lie across a
shoulder and partly down the back and chest of a person wearing the
shoulder harness 50. The padded inner surface provides skin
comfort. The shoulder harness 50 also comprises a pair of webbing
strap 54a, 54b configured to lie across the top of a shoulder and
partly down the back and chest of a person. Each shoulder strap
54a, 54b is affixed to the outer surface of the respective shoulder
pad 52a, 52b. The shoulder strap 54 is typically inelastic and is
affixed to the outside surface of the shoulder pad at intermittent
affixments 56 along the length of the strap, from the back to the
front, thereby providing at least one shoulder-top segment 58 that
is affixed at each shoulder pad with an affixment 56, and is free
from attachment along its length. Each shoulder-top segment 58a,
58b spans across the top of the user's shoulder. Additional webbing
segments 68a, 68b can be provides along the front portions, and
back portions, of the shoulder pad. A shoulder connector, such as a
"D" ring 60, can be secured for movement proximate each
shoulder-top segment 58a, 58b, for attachment thereto of a spreader
bar device or other device for vertical hoisting, and hereinafter
described. Additional "D" ring connectors can be provided along the
shoulder straps for attachment additional exercise equipment.
[0027] The respective front end 62a, 62b of each shoulder strap 54
is typically positionally associated with a buckle tongue 64 which
can be inserted into the aforementioned mating buckle latches 28a,
28d of the waist belt to releasably affix the shoulder harness 50
to the front of the waist belt 10. By positionally associated is
meant that the length of the shoulder strap 54 can pass through a
slot in the buckle tongue 64 to increase or decrease the length of
the shoulder strap, to accommodate the torso sizes of various users
and to provide a snug fit or securement of the shoulder harness 50
proximate the top of the shoulders of the user. Likewise, the
respective back end 70a, 70b of each shoulder strap 54 is typically
positionally associated with a buckle tongue 64 which can be
inserted into the aforementioned mating buckle latches 28b, 28c of
the waist belt to releasably secure the shoulder harness 50 to the
back of the waist belt 10.
[0028] To assist in securing the shoulder harness 50 in place, a
pair of front straps 72a, 72 are provided, each strap having one
end affixed to a respective shoulder pad 52 at the front, and
having the other end affixed to or positionally associated with
opposed ends of a releasable securement, typically a snap buckle
74. Further a back webbing panel 76 can be affixed, typically with
stitching, to the respective shoulder pads 52 at the back,
typically proximate the shoulder blades of the patient. These
features prevent the shoulder straps 54 from spreading far apart at
the shoulder tops and slipping off the shoulders, and allow the
shoulder harness 50 to be used for activities other than gait
training. Additionally, a handle 78 can be sewn to the webbing
panel 76 proximate the level of the shoulder blades, with which a
therapist can assist a patient with postural control by pulling the
patient into a more upright posture.
[0029] The webbing shoulder straps 54 are preferably made of
non-stretchable material, as previously described. While the
shoulder pads 52 can be slightly stretchable, they too are
typically non-stretchable.
[0030] The snug, secure, and non-stretchable fit of the shoulder
harness and waist belt harness assembly provides and improved means
for hoisting patients during rehabilitation training and for
patient care. Additionally, a weighted pulley system can be
connected to any one of the segmented sections of the shoulder
strap to provide resisted or assisted trunk exercises.
[0031] Thigh Harness
[0032] A thigh harness 90, shown in FIGS. 5 and 6, comprises a 4-
to 5-inch wide, non-stretchable, padded thigh cuff 92 having a
skin-contacting inner surface and an outer surface, configured to
securably encircle the thigh of a patient when worn. The padded
inner surface provides skin comfort. The thigh cuff pad is
typically secured around the thigh, with the overlapping ends
secured by a mechanical fastener, such as Velcro. A cuff extension
can be added via Velcro attachment to accommodate patients with
larger thighs. The thigh cuff pad is affixed, typically by
stitching, and depends from, a lower end of a webbing strap 94,
which has a second end positionally associated with a second
securing member or connector 96 that mates with the snap buckle
member 32 affixed to the waist belt 10 (see FIG. 2). This provides
a means for releasably affixing the distal end of the thigh strap
94 directly to the waist loop 30, whereby the waist loop 30 forms a
distal end for the thigh harness 90 that freely moves laterally on
the waist segment 26 and along the circumference of the waist belt
10. When using the thigh harness 90, it is advantageous that distal
end of the thigh harness can move laterally along the waist segment
26, so that the thigh strap 94 remains aligned over the lateral
part of the leg to allow unencumbered movement of the leg.
Conventional thigh harnesses have fixed-position attachment points
in the front and back of a waist belt that significantly restrict
leg and hip movement once tension is applied to the thigh straps,
typically with front and back leg motion.
[0033] Additionally, the thigh cuff harness can have a small "D"
ring as a securement sewn to the outside of the thigh strap, to
provide an attachment point for additional exercise components, and
allows activities such as resisted hip flexion, extension,
abduction and adduction exercises.
[0034] Pelvic Harness
[0035] The pelvic harness 100, shown in FIGS. 7 and 8, comprises a
pair of pelvic straps 102 and 104. The pelvic straps are configured
to cross proximate the groin of the user to form an "X" shape. The
pelvic harness 90 can also comprises a pelvic pad 106 having a
skin-contacting inner surface and an outer surface, and having a
central ischial portion 107, a pair of legs 108 extending from a
front end of ischial portion 107, and a pair of longer legs 110
extending from a back end of the ischial portion 107. Each leg 108
and 110 has at least one loop 112 affixed on the outer surface
thereof. Each pelvic strap is movably confined within the loops 112
of the cater-cornered leg 108 and longer leg 110, so that the
pelvic pad 106 can float along the pelvic straps 102 for improved
comfort. The pelvic strap 54 is typically a two-inch webbing
material that is preferably non-stretchable. Each pelvic strap is
typically affixed to or positionally associated with opposed ends
of a releasable securement 114, typically comprising a pair of
mating connectors 114a and 114b. The connector 114a has a slot
through which the length of the webbing strap 102 or 104 can pass
for positioning the connector 114a between the strap tip 122 and
the end of the padded leg 108, for adjustment of the overall length
of the waist belt to accommodate the waist sizes of various users.
A typical releasable securement 114 is a snap buckle.
[0036] Alternatively, the pelvic straps 102 and 104 can be threaded
through the respective leg loops 112 on each or either side of the
pelvic pad 106, essentially in a "C" shape or a backward "C" shape,
such that the strap 102 or strap 104 forms its own connection and
encircles the upper leg and groin.
[0037] Alternatively, the pelvic harness can also comprise a single
pelvic strap affixable to the waist belt, for providing support on
one inner thigh and pelvic region of the user. The single pelvic
strap can be associated with a pelvic pad using loops 112.
[0038] In use, the pelvic harness can be secured to the waist belt
10 by threading the end of the strap 102 having the mating
connector 114a, between the right-side waist segment 26 and the
waist pad 12 of the waist belt 10, and then attaching it to a
mating connector 114b on the other end of the other strap 104. The
left-side ends of the straps are likewise attached. The connector
114 thereby provides a means for releasably affixing the pelvic
harness 100 or either of the pelvic straps 54 to the waist
belt.
[0039] When used with the thigh harnesses, the pelvic harness can
provide a reduction in contact pressures by distributing the
patient's weight load over a greater amount of lower body. Also the
unique flexability to use the thigh harnesses and/or pelvic harness
allows the modular harness assembly to be used with a wider variety
of patients. For example, a patient with an above knee amputation
or hip fracture of the right leg could still be fit with the
modular harness assembly by using just the pelvic harness on the
right side, and a combination of the pelvic harness and thigh
harness on the left side.
[0040] Unique Features that Address Limitations of Prior Art
Harnesses
[0041] A significant problem with the conventional hoisting
harnesses is the difficulty, if not impossibility, to fitting the
harness properly on a patient in a seated or supine position,
unless the patient can stand to be fitted. This significantly
limits the utility of such conventional support harnesses for
assisting the most needy patients who cannot safely stand on their
own. The present invention provides a modular harness assembly that
can be individually "pieced" onto the patient in either a sitting
or supine position. In a typical use of the invention, the shoulder
harness, thigh harnesses, and pelvic harness are first removed from
the waist belt. Next, the waist belt is fitted and adjusted snuggly
around the waist of the patient. The thigh harnesses and pelvic
harness can then be reattached individually and connected to the
waist belt. Lastly, the shoulder harness can be placed over the
patient's head and shoulders and connected to the waist belt using
the four buckle connectors.
[0042] In an effort to improve fit and comfort, many conventional
harnesses incorporate stretchable material. However, the use of
stretchable material allows the harness to migrate when under a
weight load, causing discomfort and often times pain, including
pressure to sensitive areas such as the armpit and groin. The
present invention provides a modular harness assembly having
components that are comprised essentially entirely of
non-stretchable material to prevent unnecessary and uncomfortable
movement of the harness.
[0043] Another method employed by other conventional harnesses to
improve comfort and fit is the use multiple Velcro.RTM.-type straps
around the waist and trunk. Unfortunately, these straps are
cumbersome and time consuming to adjust properly. They also
frequently result in straps and the harness parts sticking to
themselves or to one another, including while trying to place the
harness on a patient, and especially a patient in a sitting or
supine position. The present invention provides a further
improvement by not using mechanical hook-and-loop fasteners, such
as Velcro.RTM., on the waist belt, shoulder harness, and pelvic
harness in the trunk and waist area for securement of the harness
components to the body of the person, thereby preventing the above
problems.
[0044] Many commercially-available harnesses use either a thigh
cuff or pelvic strap to support the lower body. This reduces the
applicability and utility of the harness for various patients. The
present invention uses both the thigh harness and the pelvic
harness in any combination, allowing the harness assembly to be
used with a wider variety of patients. For example, harnesses using
only thigh cuffs would not be appropriate for patients who could
not tolerate pressure around the thigh, such as with a recent hip
fracture or surgery. Patients with above knee amputations would
also not be able to use a thigh cuff because it would interfere
with the prosthesis. Harnesses only using pelvic straps are often
too uncomfortable for most patients because of the excessive
pressure in the sensitive groin area. Pelvic straps are also a
problem with patients who are incontinent. The ability to use a
combination of a thigh cuff or harness, and/or a pelvic strap or
harness, allows for increased comfort, and almost any patient can
be accommodated in some form or another.
[0045] The present invention also provides the ability to use the
modular harness assembly in multiple configurations for gait,
balance and therapeutic exercises. Use of all four components of
the modular harness assembly together provides excellent safety and
support for patients who require significant levels of body-weight
unloading. Use of just the shoulder harness and waist belt is
effective for balance training in both sitting and standing
positions, when little or no body-weight unloading is needed. This
configuration is also useful for various therapeutic exercises and
functional activities due to the numerous attachment points on both
the shoulder harness and waist belt. For example, a weight stack
with a rope pulley system can be attached to a connector on the
shoulder harness and waist belt in a variety of ways to provide
either resistance or assistance to specific motions, such as trunk
flexion, extension and rotation.
[0046] The ability of the shoulder harness to be fit snuggly to the
shoulders is also important to allow these types of activities.
[0047] The waist belt can be also used individually as an effective
gait belt with multiple hand holds. Attachment of the pelvic
harness or thigh harnesses to the waist belt provides an even more
supportive gait belt, and can be used for various exercises such as
resisted walking via the attachment points afforded by the "D"
rings securements and segmented sections of the waist belt.
[0048] The present invention also relates to a mobility system for
use in providing exercise and rehabilitation for a person,
utilizing the modular harness assembly. The mobility system employs
an overhead support for suspending a hoist assembly. The overhead
support member is typically an overhead rail and a rolling carriage
that is movable along the rail. The overhead support can also be
stationary. A non-motorized hoist assembly is associated with the
carriage to provide movement along the overhead rail. Non-motorized
hoists are preferred. The hoist assembly has at least one hoist
connector for exerting an upward force upon the modular harness
system. More typically, the hoist assembly has a pair of hoist
connectors for supporting and hoisting the modular harness at least
two connectors.
[0049] The mobility system using the modular harness can be
employed in a method for providing exercise and rehabilitation for
a person. The method includes a first step of attaching to a person
the modular harness system comprising the non-stretchable waist
belt and at least one of the auxiliary non-stretchable harness
components. Once fitted with the modular harness, the hoisting
assembly supported from the overhead support is secured to one or
more of the harness connector, and the patient is hoisted into a
position for performing a physical activity.
[0050] Typically the hoist assembly comprises a block and tackle
pulley, such as a resilient cleated pulley assembly, configured to
have a mechanical advantage of 2:1 or more, more typically 4:1 or
more. In a typical configuration, the resilient cleated pulley
assembly employs a lower fiddle block pulley connected to the
support frame, by a universal head connection and an upper fiddle
block, with built in camcleat, connected by a snap shackle to a
movable overhead rolling carriage on an overhead rail. The top
fiddle block camcleat enables a person to adjust the user's
position of height from the floor, easily and safely, for users of
different size and weight. Shock cord of varying strengths is used
to thread the fiddle blocks and thus provide an adjustable amount
of lift, rise and fall, bounce, lateral movement,
anterior/posterior movement and shock absorbency, comfortably for
the user and easily for the treatment provider.
[0051] FIG. 9 shows a hoist assembly that includes a hoist assembly
120 and a support frame 150 having a pair of spaced-apart securing
connectors 152 for attachment to at least two connectors of the
modular harness assembly. The hoist assembly is shown as a pulley
assembly 120 having a top fiddle block 122 has a snap shackle 124
with three hundred and sixty degrees of rotation at its contact
connection with the top fiddle block, and a pull pin that allows
for quick connection to, or release from, an overhead rolling
traveler 140 movably supported on an overhead rail 142, or
alternatively to a stationary eye bolt. The top fiddle block pulley
120 has a camcleat 126 with an angle adjustment arm 128 to select
the best angle of position for the camcleat 126. The bottom fiddle
block pulley 130 has a universal head connection 132 which also
rotates three hundred and sixty degrees and has a pull pin that
allows for quick connection to, or release from, a means, such as a
carabineer 160 for attaching the support frame 150. The shock cord
134 is threaded through the pulleys. The shock cord 134 is anchored
on one end to the top fiddle block at the becket 136 attachment of
the top fiddle block 46, travels under and over pulleys and then
out and through the camcleat 126. An over-hand safety knot 138 can
be tied in the shock cord 136 once that the therapy provider has
determined the maximum allowable or an appropriate length of cord.
Alternatively, a brake means such as a clamp securely affixed along
the free length of the shock cord will, in the event the hoisted
load begins descending uncontrollably, jamb the pulley and stop the
descent. The ends of the shock cord 134 are typically taped to
prevent fraying, and the becket end of the shock cord is secured
with crimped wires. The shock cord is typically of various
strengths and is provided with a durable nylon covering, with a
typical manufacturer's safe load limit is over 400 pounds. The safe
load limits of the marine-quality fiddle block pulleys can range
from 1500-3500 pounds, or more.
[0052] The support frame 150 is typically constructed of a strong,
light-weight metal or metal alloy, such as aluminum. In the
illustrated embodiment, the spaced-apart securing connectors 152
are equally spaced apart from the top connector 154 to which the
universal head connection 132 is secured, to provide better
balancing of the patient's weight. In the illustrated embodiment,
the securing connectors are shown as buckles 152 having a snap hook
156. Each buckle 152 is secured to the support frame 150 with an
adjustable-length webbing strand 158.
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