U.S. patent number 3,670,725 [Application Number 04/837,548] was granted by the patent office on 1972-06-20 for protective pad.
This patent grant is currently assigned to Medical Specialties, Inc.. Invention is credited to John F. Gaylord, Jr..
United States Patent |
3,670,725 |
Gaylord, Jr. |
June 20, 1972 |
PROTECTIVE PAD
Abstract
A protective pad for an elbow, heel, knee or like body portion
including a generally convexo-concave member of cushioning material
having a pair of spaced apart seams extending inwardly from the
outer periphery of said member but terminating in spaced apart
inner ends, said seams joining together cut edges of said material
formed by the removal of two sectors from the material and serving
to impart to said member its generally convexo-concave shape, and
fastener means carried by said member for securing the pad on the
body of a wearer in covering relation to the body portion to be
protected.
Inventors: |
Gaylord, Jr.; John F.
(Charlotte, NC) |
Assignee: |
Medical Specialties, Inc.
(Charlotte, NC)
|
Family
ID: |
25274774 |
Appl.
No.: |
04/837,548 |
Filed: |
June 30, 1969 |
Current U.S.
Class: |
128/892;
604/368 |
Current CPC
Class: |
A61F
13/102 (20130101) |
Current International
Class: |
A61F
13/10 (20060101); A61b 019/00 () |
Field of
Search: |
;128/18C,149,461,481,516,287,290 ;2/24 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Michell; Robert W.
Claims
What is claimed is:
1. A protective pad for an elbow, heel, knee or like body portion
characterized by a relatively smooth, non-irritating portion in the
area where pressure is normally applied, said pad comprising
a generally convexo-concave member of cushioning material having a
pair of spaced apart seams extending inwardly from the outer
periphery of said member and terminating in spaced apart inner
ends, said seams joining together cut edges of said material formed
by removal of two sectors and serving to impart to the member its
generally convexo-concave shape, said seams being spaced apart at
any point along their length a sufficient distance so that a
relatively smooth, non-irritating portion of the cushioning
material is defined therebetween which may be positioned against
the portions of the body portion to which pressure is normally
applied to protect these body portions without irritation, said
cushioning material being air permeable and comprising a
hydrophobic foam layer and a hydrophilic foam layer, said layers
being secured together with said hydrophobic layer forming the
concave side of said member whereby perspiration and the like will
pass through said hydrophobic layer into said hydrophilic layer
away from the skin of a wearer, said hydrophobic layer and
hydrophilic layer comprising reticulated polyurethane foam and the
foam of said hydrophobic layer having a higher density than the
foam of said hydrophilic layer, and
fastener means carried by said member for securing the pad on the
body of a wearer in covering relation to the body joint to be
protected and being arranged relative to said seams so that when
the pad is secured in covering relation to a body portion the seams
will straddle the portions of the body portion to which pressure is
normally applied and the relatively smooth, non-irritating portion
of the member will be in contact therewith.
2. A protective pad according to claim 1 wherein said
convexo-concave member is generally circular, and wherein the inner
ends of said seams are substantially equally spaced from the center
of said member.
3. The protective pad of claim 1 wherein said seams are overedge
seams disposed on the convex side of said member.
Description
This invention relates to a protective pad which is extremely
useful in protecting an elbow, heel, knee or like body portion of
persons, such as bedridden patients.
Patients confined to bed for extended periods of time, particularly
the elderly, during illness or convalescence frequently develop
decubitous ulcers or bedsores on portions of their body, such as
the elbows and heels, due to the continued exertion of pressure
thereon from the weight of the arms and legs, as when the patient
props up, turns over, etc. which pressure blocks blood circulation
in localized areas. A similar condition exists for persons confined
to a wheel chair and who are required to sit for long periods of
time with their elbows resting on the arms of the chair. The
repeated absence of blood circulation in these localized areas of
the person contributes to the development of decubitous ulcers or
bed sores. Furthermore, the elbows and heels of bedridden patients
are continually being rubbed against bedclothing which frequently
causes skin abrasion, and thus, contributes to the development of
bedsores on the elbows, heels and the like.
While repeated massage with a skin lotion somewhat reduces the
incidence of such decubitous ulcers, skin abrasions and the like,
such massage does not prevent the development thereof since it only
momentarily increases blood circulation and does not prevent
pressure blockage of blood circulation. In an attempt to further
reduce the incidence of such skin problems, protective pads have
been proposed to cover the portion of the body most susceptible to
such skin problems. However, such pads have not proven a successful
solution to the problems since they have proven to be irritating to
the skin of a wearer by holding moisture, such as perspiration and
the like, against the skin and because of seams and other
irritating unevenness in areas where pressure is normally
applied.
With the foregoing in mind, it is an object of this invention to
provide a protective pad for an elbow, heel, knee or like body
portion to prevent injury thereto without irritating the skin of
the wearer.
A more specific object of this invention is to provide a protective
pad for an elbow, heel, knee or like body portion which does not
contain seams or other irregularities in the areas where pressure
is normally applied which might cause irritation to the skin of a
wearer.
Another object of this invention is to provide a protective pad for
an elbow, heel, knee or like body portion which is air permeable
and which is moisture absorbent and is not otherwise irritative to
the skin.
In accordance with the above objects, the protective pad of this
invention, in its preferred form, includes a generally
convexo-concave member of reticulated polyurethane foam having a
pair of spaced apart seams convergingly extending inwardly from the
outer periphery of said member but terminating in spaced apart
inner ends, said seams joining together cut edges of said material
formed by the removal of two sectors from the material and serving
to impart to said member its generally convexo-concave shape, said
seams being spaced apart at any point along their length a
sufficient distance so that a relatively smooth, non-irritating
portion of the foam is defined therebetween which may be positioned
against the portions of the body to which pressure is normally
applied, and fastener means carried by said member for securing the
pad on the body of a wearer in covering relation to a body portion
and arranged relative to the seams so that when the pad is properly
positioned the seams will straddle the body portion to which
pressure is normally applied and the relatively smooth,
non-irritating portion of the member will be in contact
therewith.
Some of the objects of the invention having been stated, other
objects will appear as the description proceeds, when taken in
connection with the accompanying drawings, in which
FIG. 1 is a perspective view of a blank of cushioning material from
which a protective pad of this invention may be formed;
FIG. 2 is a reduced perspective view of one side of a protective
pad of this invention;
FIG. 3 is a perspective view of the other side of the protective
pad of FIG. 2; and
FIG. 4 is a perspective view of the protective pad of FIGS. 2 and 3
in position on a wearer's elbow.
Referring now to the drawings wherein like reference characters are
used throughout to indicate like parts, there is illustrated in
FIG. 1 a planar blank 10 of cushioning material having portions
removed therefrom. Preferably, the planar blank 10 is substantially
circular and includes a hydrophobic layer 11, adhesively united to
a hydrophilic layer 12 in a laminar structure. Each of the layers
11, 12 is preferably formed of a reticulated or open-celled
polyurethane foam. Preferably, the layers are adhesively united by
an elastic adhesive, such as rubber latex, resinous or synthetic
plastic adhesive, which may be applied either in solution or
emulsion form by spraying, roll coating or by any other
conventional technique. While other type adhesives may be used
without departure from this invention, an elastic adhesive is
preferred since such an adhesive minimizes the reduction in the
pliability of blank 10 and forms a type bond which is endurable
through continued deformation of the respective layers 11, 12.
The reticulated polyurethane foam of layers 11 and 12 is air
permeable to permit the skin in contact therewith to carry on its
normal breathing action and, the foam of hydrophobic layer 11 is of
small cell construction to wick perspiration and the like away from
the skin of the wearer and the foam of hydrophilic layer 12 is of
large cell construction to absorb and hold the perspiration and the
like at a point removed from the wearer's skin so that irritation
to the skin in contact with the pad is minimized. As shown, the
layer 12 is thicker than layer 11 and serves an additional support
or cushioning function.
Blank 10 has a pair of spaced apart V-shaped cut-outs 14, 15 formed
by the removal of two sectors therefrom and defined by cut edges
14a, 14b and 15a, 15b which respectively convergingly extend from
the outer peripheral edge of blank 10 inwardly therefrom to
terminate in spaced apart apexes 14c, 15c adjacent the center of
the blank 10, but spaced therefrom.
As seen in FIGS. 2 - 4, the cut edges 14a, 14b and 15a, 15b are
brought together, respectively, and are joined by lines of
stitching 16, 17 to form two seams which serve to form blank 10
into a generally convexo-concave member 10'. Seams 16, 17 extend
convergingly inwardly from the outer periphery of member 10'
terminating in spaced apart inner ends, but are spaced apart at any
point along their length a sufficient distance to define a
relatively smooth, non-irritating portion 20 of the cushioning
material therebetween which may be positioned against the portions
of the body portion to which pressure is normally applied to
protect these body portions without irritation.
To further prevent irritation, seams 16, 17 are preferably formed
by drawing cut edges 14a, 14b and 15a, 15b together with portions
of layer 11 immediately adjacent these cut edges in face-to-face
contact and with the cut edges disposed on the convex side of the
convexo-concave member. Then, the cut edges are preferably joined
by overedge stitching to provide as smooth a surface as possible on
the concave side of the convexo-concave member.
Fastener means is carried by the convexo-concave member for
securing the pad on the body of a wearer and, as illustrated, this
fastener means comprises straps 21, 22 connected to the
convexo-concave member at generally diametrically opposed points
and arranged relative to seams 16, 17 so that when the pad is
secured in covering relation to a body portion, the seams will
straddle the portions of the body portion to which pressure is
normally applied, as is clearly shown in FIG. 4. Suitable clasp
means is provided on straps 21 and 22 to secure the same together
in encircling relation to the body portion. As illustrated, this
clasp means comprises cooperating portions 23, 24 of a Velcro-type
clasp, the construction of which is well known.
It is therefore deemed apparent that a novel protective pad for a
body portion has been provided which will substantially prevent
skin abrasions, decubitous ulcers and the like due to the normal
pressure applied to such body portions during confinement of the
person in bed, wheel chairs and the like without irritation to the
skin heretofore encountered with protective pads.
In the drawing and specification there has been set forth a
preferred embodiment of the invention, and although specific terms
are employed, they are used in a generic and descriptive sense only
and not for purposes of limitation.
* * * * *