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Патент USA US3068871

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Dec- 18, 1962
Filed Aug. 7, 1961 ‘
?M/eerrs hlA/oopss
mam/MY M
United States Patent 0
Patented Dec. 18, 1962
Attention now is directed to the drawings wherein like
numerals designate like parts throughout the several views,
Amrette W. Hoopes, Warsaw, Ind., assiguor to De Puy
Manufacturing Company, Inc., Warsaw, Ind., a corpo
of the present invention, designated generally by the
and in particular to FIGURES 1 and 2. The cast cushion
reference numeral 10, comprises a body portion 11 and
a ?ange portion 12 formed integral therewith. The cast
cushion 10 is preferably molded of a ?ne quality rubber,
although it is’obvious that various other types of long
-wearing resilient, natural or synthetic materials may be
This invention relates to cast cushions, and more par
ticularly to cast cushions formed of resilient material and 10 readily substituted therefor. A plurality of grooves 14
ration of Indiana
Filed Aug. 7, 1961, Ser. No. 129,692
3 Claims. (Cl. 128—83.5)
adapted to be secured to or embedded in the bottom of
ire formed in the body portion 10. Two of these grooves
a foot or leg cast.
14 are disposed along diagonals of the rectangular body
portion and the remaining one is disposed along the minor
It has long .been the custom to encase broken ankles
axis of the body portion.
or legs in plaster casts. In recent years, it has'been cus
A herringbone tread 15 is formed in the surface of
tomary to embed a stirrup or brace in the plaster cast 15
the body portion 11 which is opposite the ?ange 12. The
and projecting beyond the bottom of the cast to render
the patient ambulatory without risking damage to the
treads 15 provide a nonskid walking surface for the cush
ion. A plurality of projections 16 are formed on the
These stirrups or braces have customarily been
?ange 12 on the side opposite the body portion 11.
formed of metal. The provision of metal stirrups has
certain obvious disadvantages. In addition to scu?ing and 20 In order that a better understanding of the invention
might be had, the manner in which the cast cushion is
scratching of ?oors, metal stirrups fail to provide ade
embedded in a plaster cast will now be described. A
quate cushioning and shock absorption. Manifestly, a
plaster cast is ?rst applied to the [foot and leg of the patient
cast cushion which eliminated these serious defects would
in the normal manner. Then, using plaster bandage or
be highly desirable.
It is therefore a primary object of this invention to 25 plaster splint, a level area is built up beneath the arch
of the foot. While this built-up area is still soft, the cast
provide a new and improved cast cushion which may be
cushion 10 is pressed ?rmly into the soft plaster to embed
embedded in a plaster cast and be of su?icient resiliency
to provide adequate cushioning and shock absorption.
the projections 16 therein. In applying the cushion, the
cushion should be disposed in the middle of the foot at
It is another object of this invention to provide a cast
30 right angles to and slightly forward of the long axis of
cushion which will not mar or scratch ?oors.
the leg.
It is a further object of this invention to provide a cast
cushion which will eliminate forced limp.
It is yet another object of this invention to provide a
cast cushion formed of resilient material and provided
The cushion 10 is then held in place and additional
plaster bandage is wrapped around the cast and cushion
With these and ‘other objects in View, the present in
vention contemplates, in its preferred embodiment, a cast
cushion formed of resilient material and comprising a
accommodate numerous wrappings of plastic bandage
without the plaster bandage projecting beyond the threads
in order to securely fasten the cushion to the cast. As
with a plurality of grooves therein for accommodating 35 illustrated in FIGURE 3, the plaster bandage may be
wrapped in a natural ?gure eight manner around the
plaster bandage to enable the cast cushion to be embedded
foot and through the grooves 14. Additional wrappings
in a plaster cast.
may be applied to cover the ends of the ?ange 12 which
It is yet a further object of this invention to provide a
project beyond the body portion 11. The completed cast
cast cushion of resilient material having a plurality of
projections formed thereon which engage the hardened 40 and cushion assembly will appear as seen in FIGURE 4.
The grooves 14 are made su?iciently deep so as to
plaster and preclude lateral movement of the cushion.
15 on the walking surface of the cushion 10. It will be
body portion and a ?ange portion integral therewith. The 45 noted from FIGURE 4 that the segments of the body
portion 11 all project beyond the surface of the plaster
body portion is provided with a series of deep undercut
grooves of crisscross arrangement which accommodate
cast. Thus, when the plaster has hardened, the patient
is able to walk with only the threads 15 engaging the
From the foregoing, it will be readily apparent that a
new and improved cast cushion is provided which em
plaster bandage and enable the cast cushion to be em
bedded in a plaster cast. A plurality of projections are
provided on the ?ange member and are adapted to project
into the hardened cast material to preclude lateral move
ment of the cushion. The surface of the body portion
opposite the ?ange is provided with an interrupted or
corrugated tread, which may be of herringbone pattern,
and this surface becomes the walking surface when the 55
l‘ a cushion has been embedded in or secured to a plaster cast.
Other objects, advantages and novel’ features of the
invention will become readily apparent upon considera
tion of the following detailed description when read in
conjunction with the accompanying drawings wherein:
FIGURE 1 is a view in perspective of the underside
of a cast cushion embodying the principal features of
the present invention;
bodies numerous advantages. The cushion has a low
broad base which eliminates “stilt” effect when the pa
tient walks and this results in a more nearly normal gait
for the patient. The crisscross groove arrangement per
mits a normal ?gure eight wrapping procedure which
facilitates easy application of the cushion. The cushion
is ?rmly and securely embedded in the cast due to the ar
rangement of the grooves 14 and the provision of the pro
60 jections 16.
Resilient material is used in forming the
cushion to provide adequate cushioning and shock ab
sorption as well as precluding the marking or marring
of ?oors. And, the herringbone treads provide nonslip
FIGURE 2 is an elevation view of the cushion of FIG
traction. The aforementioned advantages are but some
URE 1 and illustrates the projection on the ?ange which 65 of the many inherent in the cast cushion of the present
preclude lateral movement;
FIGURE 3 is a perspective view illustrating the manner
It is to be understood that the above-described arrange
in which the cast cushion of the present invention is ap
ments are simply illustrative of the salient features of the
plied to a plaster cast; and
invention. Numerous other arrangements and con?gura
\FIGURE 4 is a perspective view of a completed plaster 70 tions may be readily devised by those skilled in the art
cast having the cast cushion of the present invention em
which will still embody the principles of the present inven
bedded therein.
tion and fall within the spirit and scope thereof.
What is claimed is:
'1. A cushion for use with a plaster surgical foot cast,
which comprises a block having a body of substantially
order to obtain a wide spread of multiple windings of '
' uniform thickness, said block having an upper surface
area adapted to contact the cast upon the bottom or sole
thereof, and an opposite or ‘bottom surface area adapted
to contact the ground in walking, grooves formed in said
plaster bandage.
3. The cushion as set forth in claim 17in which said
[block is provided with a horizontal ?ange adjacent the
cast contacting surface and a plurality of pointed vrpro
tuberances are provided on said last named surface to be
embedded in said cast and aid in stabilizing the attach-' '
ground contacting. surface area and extending from one a
ment of the cushion, and said grooves penetrating by far
side of the block to the other, said grooves not only di- ‘ ’ the greater portion of the thickness of said .body, said ' ~
viding said ground contacting surface area into subdivi 10 ?ange serving to ‘strengthen the body of the block which
sions augmenting the anti-skid properties ‘thereof, but
is intersected by'said deep grooves.
being of such depth as to accommodate at least] one wind
ing of plaster bandage therethrough in binding the cushion
to the cast.
2. The cushion as set forth in claim ‘1 in which said 15
_ References Cited in the ?le of this patent
body of the. block is substantially rectangular in hori
Brockett _________ _;___ Nov. 26, 1918
zontal section and said deep grooves include two which
Conticchio _'_ __________ __ Nov. 9, 1937
Wright ; ____________ __ Apr. 14, 1953
coincide with the diagonals of said rectangular body, in
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