U.S. patent number 3,901,228 [Application Number 05/425,728] was granted by the patent office on 1975-08-26 for therapeutic foot rest.
Invention is credited to Robert J. Brown.
United States Patent |
3,901,228 |
Brown |
August 26, 1975 |
Therapeutic foot rest
Abstract
A therapeutic foot rest comprises a resilient foam boot having a
base and upstanding side walls defining a cavity for receiving a
patient's foot and holding the foot in an upright position, the end
wall opposing the sole of the patient's foot being resiliently
compressable against the foot board of the patient's bed to enable
therapeutic exercise.
Inventors: |
Brown; Robert J. (Huntington
Beach, CA) |
Family
ID: |
23687784 |
Appl.
No.: |
05/425,728 |
Filed: |
December 18, 1973 |
Current U.S.
Class: |
5/651;
128/882 |
Current CPC
Class: |
A61G
13/0063 (20161101); A61G 13/12 (20130101); A61F
13/069 (20130101); A61G 13/0081 (20161101); A61G
7/0755 (20130101); A61G 13/125 (20130101) |
Current International
Class: |
A61F
13/06 (20060101); A61G 13/00 (20060101); A61G
13/12 (20060101); A61G 7/075 (20060101); A61G
7/05 (20060101); A61F 013/00 () |
Field of
Search: |
;128/133,134,149,8R,8A,8B,8C,8D,8DB,8E,8F,8G,8H,8J |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Gaudet; Richard A.
Assistant Examiner: Yasko; J.
Claims
I claim:
1. A therapeutic foot rest comprising: a body of resilient foam
material having a flat base wall, a foot receiving cavity within
said body, said body being composed of an outer layer of foam
material defining said opening, an intermediate layer of foam
material defining said cavity and a third layer of foam material
forming the end wall of said cavity said layers being bonded
together to form an ankle receiving opening leading into said
cavity from one side of said body, said body being vertically split
above said opening in at least the outer layer but not extending
through said third layer to allow said body to be opened to receive
the foot and ankle of a patient.
2. A therapeutic foot rest as defined in claim 1, wherein said
intermediate layer is also split above said cavity.
3. A therapeutic foot rest as defined in claim 1, said first outer
layer and said intermediate layer being composed of foam material
of lesser density than said third outer layer.
4. A therapeutic foot rest as defined in claim 1, said layers of
foam material being die cut and permeable to air.
5. A therapeutic foot rest as defined in claim 1, wherein said
cavity is defined by relatively narrow upper toe restraining wall
sections and relatively wider lower wall sections.
Description
BACKGROUND OF THE INVENTION
Following various types of major orthopedic surgery involving the
leg or the hip, it is often necessary that the patient's foot be
stabilized in an upright position and prevented from turning to the
side with the patient lying on his back, since the patient's
muscles, tendons and ligaments are frequently so affected by the
surgery that the patient is unable to hold his leg in a desired
position.
Examples of such orthopedic surgery are implants in hips, knees,
ankles or other operations wherein substantial separation of
muscles and tendons is necessary in order for the surgeon to have
access to the joint or other region where the surgery is being
performed.
Typically, as post operative treatment, various forms of foot rests
are provided which are intended to maintain the patient's foot in
an upright position during the initial period required for partial
healing of the muscle and tendon separation, before the patient has
control of the affected leg. Shortly following such surgery, the
therapeutic exercise involves the patient applying pressure against
the foot board of his bed numerous times per day, say 500, for
example, in order to commence the restrengthening of the leg so
that the patient will have control of the leg. For this latter
purpose, it is common practice to provide a length of resilient
material, such as urethane foam, constituting a resilient cushion
at the foot of the bed which reacts against the pressure applied by
the patient.
Frequently, it is a tendency of the foot rests to become dislocated
from the patient's foot, and the patient's heel frequently becomes
sore, not only due to the long period of confinement in bed, but
also due to the rubbing of the heel on the bed or in the support
for the foot during therapeutic exercises.
SUMMARY OF THE INVENTION
The present invention provides a novel, therapeutic foot rest which
easily attaches to the foot, it comfortable in use, positively
holds the foot in an upright position and affords a cushion for
therapeutic exercise of the leg.
More particularly, the invention provides a soft, resilient, yet
stable boot-like body adapted to be applied to the foot of a
patient and provides a foot rest portion underlying the heel and
tendon region of the ankle with the foot extending upright in a
cavity affording abundant space for circulation of air, yet
constraining the foot in an upright position so that the foot and
the leg extending to the hip region are prevented from rotating in
cases where the patient's muscles and tendons have been so impaired
that the patient cannot maintain the foot and leg in a stable
position.
In addition, an end wall of the boot opposing the sole of the foot
is adapted to be placed against the foot board or other rigid
surface located at the foot of the bed against which the patient
may press the sole of the foot as a matter of therapy to assist in
strengthening the muscles.
In its preferred form, the foot rest or boot is composed of
urethane foam consisting of layers of different densities,
including a first layer having an ankle receiving opening of
relatively low density foam so as to be comfortable and to
resiliently support the tendon region adjacent the ankle, an
intermediate layer which defines the foot cavity of relatively low
density to provide a soft cushion for the heel, and a third layer
forming the sole of the boot or support of greater density against
which the patient's foot can be pressed to provide a resilient
reaction for therapy as referred to above. The ankle receiving
layer and the foot cavity forming layers are vertically split to
afford ease of application of the boot to the patient's foot
without causing discomfort, as well as to allow circulation of air
around the patient's foot.
This invention possesses many other advantages, and has other
purposes which may be made more clearly apparent from a
consideration of the form in which it may be embodied. This form is
shown in the drawings accompanying and forming part of the present
specification. They will now be described in detail, for the
purpose of illustrating the general principals of the invention;
but it is to be understood that such detailed descriptions are not
to be taken in a limiting sense.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view illustrating a therapeutic foot rest
made in accordance with the invention;
FIG. 2 is a front elevation thereof with a fragmentary portion
broken away;
FIG. 3 is a vertical section as taken on the line 3--3 of FIG. 2,
showing the foot rest applied to a patient's foot and leg; and
FIG. 4 is a perspective view illustrating the foot rest in a
stretched open condition facilitating reception of the patient's
foot and ankle.
DESCRIPTION OF THE PREFERRED EMBODIMENT
As seen in the drawings, the therapeutic foot rest comprises a body
of resilient foam material comprising a flat base wall 1 adapted to
rest upon a bed 2 to provide a stable support for the upstanding
body section of the foot rest.
Within the foot rest body is a central cavity 3 extending
vertically for receiving the patient's toes, and of generally
frusto-conical form as seen in FIG. 2, so that the patient's toes
are substantially confined by the relatively narrow side walls
adjacent to the top of the cavity 3 to prevent lateral movement of
the foot, while the wider, lower portion of the cavity 3 affords
space for circulation of air. The foot rest body has a circular
opening 4 for receiving and resiliently constraining the patient's
ankle against lateral movement. The body is vertically split at 5
above the opening 4, the split extending at 6 into the mid-section
of the body so that the body is also split at the top of the cavity
3. The inner wall 7 of the body defining the cavity 3 opposes the
sole of the foot of the patient and the resilient body material is
adapted to be pressed against a foot board or other rigid member 8
to enable therapeutic exercise.
In its preferred form, the body is composed of three separate
pieces of resilient material, such as three layers of urethane
foam, consisting of a first outer layer A, an intermediate layer B
and another outer layer C. The first outer layer A is of relatively
low density foam so that the rest or pad section 9 on which the
patient's tendon region rests is soft and comfortable. Internally
of the pad section 9, the intermediate layer B provides a heel pad
section 10 on which the patient's heel may rest somewhat, but in
general, the predominance of the weight will be supported by the
pad section 9. The pad section 10 is at a lower elevation to
provide a depression for receiving the heel to prevent heel sores.
The intermediate layer B is also preferably composed of foam of
relatively low density. The outer layer C is preferably composed of
relatively high density foam to provide resilient reaction to foot
pressure applied by the patient during therapeutic exercise.
Urethane foam is an ideal material for the foot rest in that the
foam permits the circulation of air, so that although the patient's
foot is effectively confined it will remain relatively cool and
well ventilated. Ventilation is enhanced by the fact that the
intermediate layer B is split as at 6, and when the patient presses
against the cavity wall 7, the body will yield and open somewhat in
the region of the splits 5 and 6, reclosing when pressure is
relaxed, thereby inducing air flow. The foam layers are preferably
die cut and cemented together rather than resorting to a molding
process, thereby avoiding impairment of the inherent permeability
of the foam material.
In addition, the urethan foam is easily flexed so that the foot
rest can be widely opened at the splits 5 and 6 to enable the foot
rest to be applied to a patient's foot and ankle easily without
causing pain to the patient.
* * * * *