U.S. patent number 3,661,151 [Application Number 05/009,199] was granted by the patent office on 1972-05-09 for surgical shoe.
This patent grant is currently assigned to PSL Industries, Inc.. Invention is credited to Murray M. Lichtenstein, Bernard Podos, Errol A. Schoenbrun.
United States Patent |
3,661,151 |
Schoenbrun , et al. |
May 9, 1972 |
SURGICAL SHOE
Abstract
A shoe converted to aid post-operative rehabilitation of the
foot and to serve as a splint or cast for foot fractures is
provided with rigid plywood midsole to restrict undesirable foot
movement during ambulation. The shoe upper is modified by
eliminating the conventional toe box and tongue so that the shoe
can be readily adjusted to compensate for swelling of the foot
constriction loosening lacing placed through eyelets in the upper.
Elimination of the toe box and tongue a also decreases
post-operative constriction of the foot within the shoe
contributing to undesirable swelling. In all other respects the
shoe remains unmodified, to allow both feet to be the same height
for the walking surface when a normal shoe is worn on the other
foot, for cosmetic purposes, and to permit ambulation with maximum
comfort and convenience.
Inventors: |
Schoenbrun; Errol A. (El Paso,
TX), Lichtenstein; Murray M. (El Paso, TX), Podos;
Bernard (El Paso, TX) |
Assignee: |
PSL Industries, Inc. (El Paso,
TX)
|
Family
ID: |
21736180 |
Appl.
No.: |
05/009,199 |
Filed: |
February 6, 1970 |
Current U.S.
Class: |
36/140;
36/83 |
Current CPC
Class: |
A43B
7/00 (20130101) |
Current International
Class: |
A43B
7/00 (20060101); A61f 005/04 () |
Field of
Search: |
;128/87,83.5,82,581,80,83 ;36/30,33,28,2.5 |
References Cited
[Referenced By]
U.S. Patent Documents
Other References
"A Walking Plaster Appliance" by Wright, The Lancet, Nov. 11, 1950,
p. 519. Advertisement in Jour. Bone & Joint Surg., Nov. 1951,
p. 8..
|
Primary Examiner: Gaudet; Richard A.
Assistant Examiner: Yasko; J.
Claims
What we claim as our invention is:
1. A surgical shoe construction designed to receive a cast-less
foot to promote post-operative rehabilitation of the foot
comprising:
a composite sole, said composite including
rigid midsole means for immobilizing the foot of the wearer by
restricting undesirable foot movement during ambulation,
cushion means on the upper surface of said midsole means, and
ground engaging sole means secured to the lower surface of
said midsole means;
heel means comprising an insert positioned between the midsole
means and the ground engaging sole means for elevating said midsole
means;
a flexible shoe upper secured to said composite sole adapted to
substantially envelop the foot of the wearer to minimize swelling
of the foot;
said upper having an open toe portion and a midportion having
spaced edges; and
said midportion including a pair of spaced tongues overlaying the
flexible upper of the shoe for securing said shoe to said foot,
said tongues carrying means for bringing the midportion edges
together with the selective tension to compensate for various
swelling conditions of the foot.
2. A surgical shoe in accordance with claim 1 wherein said spaced
tongues include lace receiving eyelets.
3. A surgical shoe in accordance with claim 1 wherein said insert
provision between the midsole means and ground engaging sole
portion comprises a wedge.
4. A surgical shoe in accordance with claim 1 wherein said shoe
upper is secured to the lower surface of said midsole.
5. A surgical shoe in accordance with claim 1 wherein ground
engaging sole portion is a rippled rubber sole.
6. A surgical shoe in accordance with claim 1 wherein said cushion
on said midsole is formed from foam.
7. A surgical shoe in accordance with claim 1 wherein said rigid
midsole is formed from plywood.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to an orthopedic device, and more
particularly, a modified shoe useful for post-operative foot
rehabilitation and for permitting ambulation during healing of foot
fractures and injuries.
2. Prior Art
A common surgical appliance is one which holds a limb in a
relatively fixed and immobile position while healing proceeds. The
most common of such appliances is the plaster-of-paris cast for
post-operative immobilization and for treatment of fractures and
related injuries.
Surgical splints in combination with bandages or plaster-of-paris
casts are also employed to hold a limb in fixed position to allow
healing of fractures and injuries. These usually feature a
relatively straight rigid member which may be bandaged to a limb or
incorporated in the cast. An advanced example of such an appliance
is illustrated in U.S. Pat. No. 3,198,192, issued to H. T. O'Brien
where a piece of plywood is adhered to a patient's foot by a
bandage or cast. A rubber heel affixed to the rigid plywood splint
elevates the foot from the ground and provides a walking
surface.
While the above device satisfies the need to restrain a limb and
particularly a foot during healing, it is no more than a surgical
splint which does not satisfactorily meet the need for an
inexpensive, mass-produced, foot rehabilitation device which the
patient can have easily mounted on and removed from his foot
without extensive medical assistance.
SUMMARY OF THE INVENTION
In accordance with the present invention a shoe, rather than a
splint, is used to immobilize the foot during post-operative
periods and for healing of fractures and other foot injuries. The
shoe is modified by building a plywood midsole into the sole to
rigidify it. The upper of the shoe is substantially like any other
laced shoe, except for the elimination of the conventional tongue
and toe box. The resulting construction enables easy insertion of
an injured or post-operative foot into the shoe and in combination
with the rigidified sole provides restraint of movement of the foot
in the shoe, when the shoe is laced.
Restraint in the shoe achieves the desired orthopedic purposes of a
cast or splint while allowing a patient otherwise normal movement,
such as walking, without substantial impediment. In addition,
constriction by a shoe has the added advantage of reducing
post-operative swelling, but if the same does occur, the shoe can
be readily adjusted to compensate for swelling of the foot, by
undoing and retying the laces.
Other advantages and aims of the invention will become apparent
from the following description and claims, and from the
accompanying drawings, wherein:
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of the surgical rehabilitation shoe
comprising the invention; and
FIG. 2 is a cross-sectional view of the shoe shown in FIG. 1 taken
substantially along the plane indicated by line 2--2 of FIG. 1.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to the drawing in detail, wherein like numerals indicate
like elements throughout the two views, a rehabilitation shoe
constructed in accordance with the present invention is generally
designated by the numeral 10.
Shoe 10 includes shoe upper 11 cemented to a flat composite sole
shown generally as 13. Composite sole 13 includes a flat, rigid,
plywood midsole 15 to which the lower edge 16 of upper 11 is
cemented. After securement of edge 16 to rigid sole 15, a rubber,
ripple sole 17 is secured by cement to the underside of the front
half of midsole 15. A cushion crepe wedge heel 43 is cemented
between the remaining half of plywood midsole 15 and ripple sole
17. The composite sole 13 is completed by an elongated piece of
foam rubber cushion 41 having a fabric covering 39. The foam 41 and
covering 39 are laminated to a piece of cardboard 40, and the
laminated assembly is then cemented to the upper surface of plywood
midsole 15.
As shown in FIGS. 1 and 2, foam cushion 41 extends the entire
length of the upper surface of midsole 15. The front portion of the
fabric covered foam cushion 41 is covered by a leather toe piece 37
secured to the upper surface of the midsole 15 and stitched to foam
cushion 41. A leather heelpad 38 is cemented on foam cushion 41
adjacent the heel portion of the shoe.
Upper 11 can be reinforced by a backstay 19 and heel counter 21
stitched and partially cemented to the upper. The shoe upper 11 is
substantially the same as in any laced shoe construction except
that an integral toe box and tongue for covering the toes and foot
midportion have been eliminated.
A leather tongue 25 is stitched along one of its edges 27 to
adjacent, spaced portions 26 of upper 11 located adjacent the
midportion of the foot. The edges of the tongues 25 facing each
other are left unattached to allow lacing to be placed in metal
eyelets 31 along their length. The eyelets 31 are spaced the length
of the tongues 25 and are arranged in corresponding number on both
tongues 25.
The resulting sole construction, provides elevation of a foot to
the same degree as an ordinary shoe. A normal shoe may be worn on
the uninjured foot and the rehabilitation shoe on the injured foot
with the result that both feet are spaced the same distance from
the ground, providing a minimum impediment to walking.
The upper 11 restrains the foot by enclosing it at the midpoint and
drawing the heel of the foot into the heel counter 21 by means of
lacing the tongues 25. The bottom of the foot rests firmly against
the foam cushion 41 on top of the rigid plywood midsole 15.
Selective tension may be applied uniformly across the foot by
adjusting the tightness of the lacings to compensate for any
swelling of the foot due to the injury or surgery, and to minimize
any tendency for additional swelling.
The shoe serves as a splint to hold a foot immobile when the foot
is urged into the conforming upper 11 and downwardly against the
rigid midsole 15. Upper 11 alleviates the necessity of a cast or
bandage that would normally hold the foot against the splint or
plywood midsole 15, while healing. Further, confinement of the foot
not only permits healing, but limits movement of the flesh to
prevent tearing of sutures and to hold an incision in place when
the shoe is used post-operatively. Additionally, there is forward,
lateral and rear protection against bumping of an injured foot by
the rigid sole 13.
* * * * *