U.S. patent number 3,750,664 [Application Number 05/244,437] was granted by the patent office on 1973-08-07 for fenestrated surgical drape.
This patent grant is currently assigned to The Kendall Company. Invention is credited to Robert F. Collins.
United States Patent |
3,750,664 |
Collins |
August 7, 1973 |
FENESTRATED SURGICAL DRAPE
Abstract
A surgical drape including, a sheet of material having a
fenestration disposed within an area intermediate the outer
peripheral edges of the sheet. The fenestration is positioned over
a surgical site on a patient, and is conformable to an irregular
contoured surface of the patient's body without excessive bunching,
buckling or overlapping of the sheet material adjacent the
fenestration. The fenestration thus remains sufficiently open
during an operative procedure to provide access to the surgical
site.
Inventors: |
Collins; Robert F. (Barrington,
IL) |
Assignee: |
The Kendall Company (Walpole,
MA)
|
Family
ID: |
22922764 |
Appl.
No.: |
05/244,437 |
Filed: |
April 17, 1972 |
Current U.S.
Class: |
128/853 |
Current CPC
Class: |
A61B
46/00 (20160201) |
Current International
Class: |
A61B
19/00 (20060101); A61B 19/08 (20060101); A61f
013/00 () |
Field of
Search: |
;128/132R,132D,292 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Rosenbaum; Charles F.
Claims
I claim:
1. A surgical drape comprising:
a sheet of drapable material defined by peripheral edges and having
a fenestration disposed therein within an area intermediate said
peripheral edges,
said fenestration being defined by interior edges of said sheet
described with reference to an imaginary X -- X' axis and an
imaginary Y -- Y' axis which intersects said X -- X' axis at an
angle of 90.degree. in said area as follows:
a substantially straight first interior edge extending along a
portion of said X -- X' axis and intersected at its approximate
midpoint by said Y -- Y' axis;
a substantially straight second interior edge parallel to and
spaced from said X -- X' axis and intersected at its approximate
midpoint by said Y -- Y' axis;
a third interior edge extending from one end of said first interior
edge to an end of said second interior edge which lies on the same
side of said Y -- Y' axis as said one end; and
a fourth interior edge extending from the other end of said first
interior edge to an end of said second interior edge lying on the
same side of said Y -- Y' axis as said other end;
said third and fourth interior edges having first portions thereof
which extend from opposite ends of said first interior edge in
substantially straight lines tapering away from said Y -- Y'
axis.
2. The surgical drape of claim 1 wherein said third and fourth
interior edges include second portions thereof which extend from
said first portions and curve inwardly toward said Y -- Y' axis to
join opposite ends of said second interior edge.
3. The surgical drape of claim 2 wherein said second portion of
each of said third and fourth interior edges comprises an edge
which follows a circular arc from said first portion to an end of
said second interior edge.
4. The surgical drape of claim 2 including a first compacting means
for compacting said sheet adjacent said first interior edge.
5. The surgical drape of claim 4 including a second compacting
means for compacting said sheet adjacent said second interior
edge.
6. The surgical drape of claim 5 wherein said first compacting
means comprises a pleat in the material of said sheet along said
first interior edge and said second compacting means comprises a
pleat in the material of said sheet along said second interior
edge.
7. The surgical drape of claim 6 wherein each of said pleats
comprises a first fold of the sheet along a first fold line
extending outwardly from the fenestration bringing the sheet
adjacent the fenestration over onto itself and a second fold in the
opposite direction as said first fold along a second fold line
extending parallel to said first fold line bringing said sheet back
over upon itself over said first fold.
8. The surgical drape of claim 6 including means bonding each of
said pleats in the material of the sheet adjacent the
fenestration.
9. The surgical drape of claim 8 wherein said means comprises
adhesive material.
10. The surgical drape of claim 8 wherein each of said pleats
includes a tab adjacent the edge of the fenestration, said tab
being bonded to an underlying portion of the sheet by said means to
secure said pleat in said sheet.
11. The surgical drape of claim 8 wherein said first and second
interior edges are spaced apart a perpendicular distance of from
approximately 3.5 to approximately 9 inches.
12. The surgical drape of claim 11 wherein each of said first and
second interior edges has a length of from 0 to approximately 4
inches.
13. The surgical drape of claim 12 wherein said first portion of
each of said third and fourth interior edges extends away from an
end of said first interior edge and forms an angle therewith of
from approximately 100.degree. to approximately 150.degree. .
14. The surgical drape of claim 13 wherein said first and second
interior edges are substantially the same length.
15. The surgical drape of claim 13 wherein said means provides
bonds extending from the first and second interior edges of the
fenestration a distance of from approximately 1/8 inch to
approximately 8 inches.
16. The surgical drape of claim 15 wherein said pleats compact the
sheet by taking up approximately 2.5 inches of the sheet material
along said first and second interior edges.
17. The surgical drape of claim 16 wherein said means provides
bonds extending from the first and second interior edges of the
fenestration a distance of approximately 4 inches, said first and
second interior edges are each approximately 11/4 inches in length,
and said first and second interior edges are spaced apart a
perpendicular distance of approximately 6 inches.
18. The surgical drape of claim 17 wherein said first portion of
each of said third and fourth interior edges extends away from an
end of said first interior edge and forms an angle therewith of
approximately 120.degree. .
19. The surgical drape of claim 18 wherein said second portion of
each of said third and fourth interior edges extends along the arc
of a circle having a radius of approximately 2 inches.
Description
BACKGROUND OF THE INVENTION
Surgical drapes are employed to cover portions of the body of a
medical patient during an operative procedure. Commonly, a surgical
drape may include a fenestration for access therethrough to a
surgical site. Fenestrated drapes are intended to cover the body of
a patient around a surgical site while allowing a doctor to operate
at the site through the fenestration with his hands and
instruments. Accordingly, the opening provided by the fenestration
in such drapes should be appropriately sized and otherwise suitably
adapted for providing access to the surgical site without hindrance
by the drape material adjacent the fenestration to the activity of
the doctor, while permitting the drape to cover a sufficient area
of the patient's body around the surgical site to prevent
contamination of other portions of the patient's body by fluids
draining from the site.
Typically, convention surgical drapes are made from sheets of
flexible, relatively soft, and drapable material. Fenestrated
drapes often are reinforced around the fenestration by an
additional ply of material, such as by a layer of fluid impervious
plastic sheet material. Such reinforcement strengthens the drape
material and provides additional protection against strike-through
of blood and other body fluids in the area around the fenestration.
Such reinforcement also tends to stiffen the drape, making it
somewhat "boardy" in the area around the fenestration.
Conventional surgical drapes generally conform fairly well to
surface areas of the human body where the body contour is flat,
gently sloping, or broadly curved and not sharply angular. However,
cetain regions of the body have irregularly shaped contours which
include sharp corners or extremely concave or convex surfaces. One
such irregularly contoured region extends from the shoulders or
upper chest to the chin. The contour of the body surface of a
patient lying on his back on a flat table or bed is substantially
horizontally flat or gently sloping in the area of the chest but
drops off sharply in a substantially vertical direction at the
shoulders, narrows to a generally tubular, concave surface at the
neck, and bends up in a sharp convex angle to the chin, forming a
somewhat saddle-shaped surface between the upper part of the chest
and the chin. When a surgical site is located within this
irregularly contoured area, such as in a thyroid operation, it has
proven difficult to properly drape the patient with conventional
surgical drapes.
Conventional surgical drapes do not conform well to irregularly
contoured surfaces. Conventional drapes tend to buckle and bunch up
at sharply angular surfaces, and the drape material overlaps
itself. Also, sizeable gaps form between the drape and the surface
of the patient's body. Therefore, when an attempt is made to
conform a conventional fenestrated drape to a body surface with the
fenestration positioned over a surgical site in an irregularly
contoured region thereof, such as over an incision in the neck for
a thyroid operation, the drape material buckles or bunches up and
overlaps itself, causing the opening provided by the fenestration
to be substantially reduced in size or completely closed by the
drape material. Closing of the fenestration in this manner prevents
ready access therethrough to the surgical site and seriously
inhibits activity at the site. Also, because the drape material
tends to gap from body surface around the surgical site, blood and
other body fluids drain under the drape and contaminate other areas
of patient's body. If a conventional fenestrated drape is
reinforced by an additional layer of material around the
fenestration, these problems are increased because of the greater
stiffness, or "boardiness," of the reinforced drape material.
As mentioned, the area on and adjacent to the neck has a
particularly irregular contour. Thus, draping with conventional
fenestrated drapes has been particularly difficult to achieve
satisfactorily in thyroid operations. Conventional fenestrated
drapes do not conform well to the contour of the body surface in
this area. Instead, when applied with the fenestration over a site
on the neck, the material of a conventional fenestrated drape
bunches up so that the fenestration is substantially narrowed or
completely closed. Also, the drape material adjacent the
fenestration becomes spaced, or gaps, from the body surface so that
fluids from the surgical site may drain under the drape. Bunching
of the drape material also interferes with the activity of a doctor
attempting to operate at the surgical site.
To avoid these problems, some doctors follow the practice of
stitching or clipping the drape material to the skin of the patient
adjacent the surgical site to maintain the fenestration in a
properly open condition during a thyroid operation. Such practice
is both time consuming and generally undesirable.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a fenestrated
surgical drape which is suitably adapted for covering irregularly
contoured surfaces.
It is also an object of this invention to provide a surgical drape
having a fenestration therein which is adapted to be placed on a
patient with the fenestration over a surgical site on his neck,
such as for a thyroid operation, and is readily conformable to the
contour of the patient's body adjacent the surgical site without
excessive bunching, buckling, or overlapping of the drape material
adjacent the fenestration and with the fenestration sufficiently
open to provide access therethrough for operative procedures.
Briefly described, the surgical drape of this invention comprises a
sheet of drapable material having a fenestration therein to provide
access to a surgical site when the drape is applied over the body
of a patient. The sheet may be made of any material suitable for
draping hospital patients during an operative procedure. Such
materials are usually somewhat soft and flexible, and may be
impervious or resistant to the passage of body fluids and other
liquids. The sheet may be either reusable or disposable. Suitable
materials for the sheet include woven and nonwoven cotton or
cellulosic materials, linen, paper, plastic films, and combinations
of these materials, which may also be reinforced by materials such
as nylon fibers, if desired.
The outer periphery of the sheet may have any shape and size
suitable for the intended purpose of the drape. Typically, the
outer peripheral edges of the sheet define a generally
rectangularly shaped drape.
The sheet has a fenestration therein in an area intermediate the
outer peripheral edges of the sheet. The fenestration is adapted to
provide an opening for a doctor to operate therethrough,
particularly at a surgical site located in an irregularly contoured
portion of a patient's body. The sheet has interior edges which
define the periphery of the fenestration. With reference to an
imaginary X -- X' axis and an imaginary Y -- Y' axis which lie in
the plane of the fenestration and intersect each other
perpendicularly in the area of the drape in which the fenestration
is located, the interior edges are described as follows: a
substantially straight first interior edge extending along a
portion of X -- X' axis and being intersected at its approximate
midpoint by said Y -- Y' axis; a second interior edge spaced from
and generally parallel to said X -- X' axis and intersected at its
approximate midpoint by the Y -- Y' axis; a third interior edge
extending from one end of the first interior edge to the end of the
second interior edge which is on the same side of the Y -- Y' axis
as said one end; and a fourth interior edge extending from the
other end of the first interior edge to the end of the second
interior edge which lies on the same side of the Y -- Y' axis as
said other end; the third and fourth interior edges extending for a
first portion of their lengths away from the ends of the first
interior edge in substantially straight lines tapering away from
the Y -- Y' axis and extending from that first portion along a
second portion which curves inwardly toward the Y -- Y' axis to
join the ends of the second interior edge.
As an additional feature of this invention, the drape includes
compacting means which compact the sheet in areas adjacent the
fenestration at the first and second interior edges. The compacting
means may comprise one or more pleats along the first and second
interior edges which draw in the material of the sheet along those
edges. Such pleats are formed by overlapping portions of the sheet
along those interior edges and securely bonding those portions in
such overlapping relationship by adhering means such as glue or
adhesive. Compacting means other than pleats may also be employed
in accordance with this invention to compact the sheet along those
interior edges adjacent the fenestration. Examples of other
satisfactory compacting means include elastic strips affixed along
those interior edges to draw in the sheet material and accordian
folding of the sheet material along those edges. Also, such
compacting could be achieved by cutting a notch from the sheet
along those interior edges and securely closing the opposing edges
of the notched portion against each other in abutting or
overlapping relationship.
The fenestrated drape of this invention provides a solution to the
problem of draping the irregularly contoured surface of the body on
and around the neck. When applied over a patient with the
fenestration positioned above a surgical site on his neck such that
said first interior edge is located at that end of fenestration
nearest his head and with the imaginary Y -- Y' axis aligned
generally lengthwise with the patient's body, this drape will
conform to the contour of body surfaces around the surgical site
without excessive bunching, buckling, overlapping or gapping, and
will provide an opening through the fenestration of sufficient size
to operate therethrough, without requiring stitching or clamping of
the drape to the patient's body adjacent the site to maintain the
fenestration in such a condition. Thus, this invention provides an
excellent fenestrated drape for thyroid operations.
BRIEF DESCRIPTION OF THE DRAWINGS
The objects, details, and exact nature of this invention will be
better understood upon reading the following portions of the
specification detailed in reference to the accompanying drawings,
in which:
FIG. 1 is a plan view of a flat fenestrated drape in accordance
with this invention having a portion of the length of the drape cut
out therefrom;
FIG. 2 is an enlarged plan view of a cutaway portion of the drape
of FIG. 1 which includes the fenestration;
FIG. 3 is a plan view showing the cutaway portion of the drape
illustrated by FIG. 2 at an unfolded preliminary stage in its
formation;
FIG. 4 is a perspective view showing the drape of FIG. 1 placed
over a patient with the fenestration in position to provide access
through the drape to a surgical site on the patient's neck; and
FIG. 5 is a perspective view of the draped patient of FIG. 4 from a
different angle illustrating the opening through the drape to the
patient's neck provided by the fenestration.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
FIG. 1 shows a drape having a fenestration therein in accordance
with this invention. The drape comprises a sheet 2 of drapable
material defined by peripheral edges 4 and having a fenestration 6
disposed therein within an area intermediate the peripheral edges
4. The sheet 2 may comprise any sheet material suitable for draping
hospital patients during an operative procedure. Such drapes are
usually somewhat soft, flexible, and impervious or resistant to the
passage of body fluids and other liquids therethrough, at least in
areas thereof which are likely to be contacted by such liquids
while covering a patient's body. As shown in FIG. 1, the sheet 2
defined by peripheral edges 4 has a generally rectangular shape.
While this shape is suitable for many purposes, it is not an
essential element of the invention, and other shapes may be
employed equally well so long as the drape adequately covers and
protects the area to which it is applied.
The sheet 2 of FIG. 1 includes a reinforcing layer 8 in an area
adjacent the fenestration 6. Such reinforcement also is optional
with a drape in accordance with this invention. When employed, it
strengthens the sheet and increases protection against fluid
strike-through in the area around the fenestration 6. Where the
major portion 10 of sheet 2 comprises a fluid permeable or
absorbent material, such as nonwoven cellulosic fabric, reinforcing
layer 8 may preferably comprise a fluid impervious layer of plastic
film.
As shown in FIG. 1, the fenestration 6 passes through sheet 2 in
the area reinforced by layer 8. The fenestration 6 is defined by
interior edges 12, 14, 16, and 18. To facilitate description of the
interior edges 12, 14, 16, 18 defining the fenestration 6 and to
indicate the alignment of the sheet 2 relative thereto, an
imaginary X -- X' axis and an imaginary Y -- Y' axis which
intersects the X -- X' axis at an angle of 90.degree. at a point
intermediate the peripheral edges 4 of sheet 2 have been included
in FIGS. 1 - 4. As shown in FIG. 1, the Y -- Y' axis runs
longitudinally down the approximate center of the sheet 2 parallel
to two of the four peripheral edges 4. The X -- X' axis runs across
the sheet perpendicular to the Y -- Y' axis and parallel to the
other two of the four peripheral edges 4 and extends along interior
edge 12 at the fenestration 6. The material of sheet 2 is compacted
at interior edges 12 and 14 by pleats 20 and 22 adjacent the
fenestration.
FIG. 2 shows an enlarged view of a cutaway portion of the drape of
FIG. 1 which includes the fenestration 6. Interior edge 12 lies
along the X -- X' axis and is intersected at its approximate
midpoint by the Y -- Y' axis. Interior edge 14 is spaced a distance
from the X -- X' axis and generally parallel thereto and is also
intersected at its approximate midpoint by the Y -- Y' axis.
Interior edge 16 extends from an end 24 of interior edge 12 to the
end 26 of interior edge 14 which lies on the same side of the Y --
Y' axis as end 24 of interior edge 12. Similarly, interior edge 18
extends from the other end 28 of interior edge 12 to the end 30 of
interior edge 14 which lies on the same side of the Y -- Y' axis as
end 28 of interior edge 12. Interior edges 16 and 18 have first
portions, 32 and 34 respectively, which extend from opposite ends
of interior edge 12 in substantially straight lines tapering away
from the Y -- Y' axis. Second portions 36 and 38 of interior edges
16 and 18 extend from first portions 32 and 34 respectively along
lines which curve inwardly toward the Y -- Y' axis and join
opposite ends of interior edge 14.
Pleats 20 and 22 are located at interior edges 12 and 14
respectively to compact the material of the sheet 2 along those
edges adjacent the fenestration 6. To better understand the
construction of pleats 20 and 22, FIG. 3 should be considered in
conjunction with FIG. 2. FIG. 3 shows the portion of sheet 2 shown
in FIG. 2 prior to the formation of pleats 20 and 22. Since edges
12a and 14a of FIG. 3 have not yet been compacted by the formation
of pleats 20 and 22, they are longer than their pleated
counterparts, edges 12 and 14 of FIG. 2. Slits 40 and 42 extend at
angles 41 and 43 away from edges 12a and 14a respectively creating
tabs 44 and 46. Fold lines 48 and 50 extend generally
perpendicularly away from edges 12a and 14a respectively. Fold
lines 52 and 54 extend in directions generally parallel to fold
lines 48 and 50 away from the ends of slits 40 and 42 respectively.
Adhering means 56 and 58, comprising material such as adhesive or
glue, is positioned at the fenestration 6 along edges 12a and 14a.
To securely form pleat 20, sheet 2 is folded back upon itself along
fold line 48 and back in the reverse direction along fold line 52
in a pleating fashion such that an area between fold lines 48 and
52 and under tab 44 is brought into contact with adhering means 56
and bonded thereby to the underlying portion of the sheet.
Similarly, sheet 2 is folded back upon itself along fold line 50
and back in the reverse direction along fold line 54 in a pleating
fashion such that an area between fold lines 50 and 54 and under
tab 46 is brought into contact with adhering means 58 and bonded
thereby to the underlying portion of the sheet to securely form
pleat 22.
Tabs 44 and 46 are provided for attachment to areas 60 and 62 by
adhering means 56 and 58 respectively in order to strengthen the
bond of pleats 20 and 22 adjacent the fenestration. Such tabs are
optional, however. This invention also contemplates the compacting
of sheet 2 along these interior edges by creating pleats without
such tabs simply by extending fold lines 52 and 54 to edges 12a and
14a respectively and not providing slits 40 and 42. In fact, as
previously mentioned, other means of compacting the sheet adjacent
these edges could be employed in accordance with this invention,
the important feature being the removal or drawing in of an amount
of the sheet material in areas adjacent interior edges 12 and 14 at
the fenestration. Removal of the sheet material in these areas has
the effect, when combined with a fenestration of the general shape
shown in the drawings, of eliminating that portion of the sheet
material which tends to buckle, bunch, and overlap to close the
fenestration when the sheet is draped over a patient with the
fenestration positioned over a surgical site on the patient's neck.
When properly placed, the drape of this invention conforms well to
the irregularly contoured body surfaces adjacent such a surgical
site and provides a fenestration which remains sufficiently open,
naturally and without clamping or stitching to the patient's skin,
so that a doctor may conveniently operate therethrough at the
surgical site.
FIG. 4 shows a patient covered with the drape of FIG. 1 with the
fenestration 6 positioned over his neck and providing an opening
through the sheet 2 appropriate for a thyroid operation. FIG. 5
shows another view of a portion of the draped patient of FIG. 4
taken at a different angle to better illustrate the opening
provided by the fenestration 6. When the drape of FIG. 1 is
properly positioned on a patient, as shown in FIGS. 4 and 5, the
imaginary Y -- Y' axis lies substantially parallel to the
lengthwise body dimension of the patient. Interior edge 12 is at
that end of the fenestration 6 nearest the patient's head. As
illustrated, sheet 2 is in general conformity with the contour of
the patient's body at and around the surgical site at the neck, and
the fenestration is in a properly open condition.
The size and precise configuration of the fenestration of a drape
in accordance with this invention may vary within practical limits
and according to the size of the body to which it is applied. In
one embodiment of the structure of the fenestration 6 shown in FIG.
2 suitably adapted for a drape to be used in thyroid operations on
most human neck sizes, interior edges 12 and 14 are each
approximately 11/4 inches in length and are spaced apart a
perpendicular distance of approximately 6 inches, substantially
straight line portions 32 and 34 of interior edges 16 and 18 are
each approximately 3 inches in length and extend away from interior
edge 12 at angles 64 and 66 respectively of approximately
120.degree., and curved line portions 36 and 38 extend from the
ends of straight line portions 32 and 34 respectively to opposite
ends 26 and 28 of interior edge 14 along arcs of circles which have
a radii of approximately 2 inches. Prior to the formation of pleats
20 and 22, the perpendicular distance between fold lines 48 and 52
and between fold lines 50 and 54 is approximately 11/4 inches (half
the amount of the sheet material taken up by pleats 20 and 22 in
compacting the sheet along the interior edges 12 and 14), and slits
40 and 42 are approximately 13/4 inches long and extend away from
interior edges 12a and 14a to fold lines 52 and 54 at angles 41 and
43, respectively, of approximately 45.degree.. Adhering means 56
and 58 extend a distance of approximately 4 inches from interior
edges 12 and 14 respectively.
As indicated, these specific dimensions define but one preferred
structure of a fenestration in accordance with this invention. Each
of these dimensions may be varied within practical range
limitations depending on the size of the body to which the drape is
to be applied, the personal preferences of the user, the size of
the opening desired, and a natural range of sizes for these
dimensions which will form acceptable openings in the drape applied
to a patient. As previously pointed out, tabs 44 and 46 may be
eliminated altogether without departing from the essence of this
invention. It has also been found that the perpendicular distance
between interior edges 12 and 14 may vary from 31/2 inches to 9
inches and provide a functional thyroid drape for a normal sized
(151/2 inch) human neck. Also, interior edges 12 and 14 may each
vary in length up to a maximum of approximately 4 inches, and edges
12 and 14 do not necessarily have to be exactly the same length.
Furthermore, edge portions 32 and 34 may be gently curved rather
than precisely straight lines, and may extend from interior edge 12
at angles 64 and 66 of from approximately 100.degree. to
approximately 150.degree., while edge portions 36 and 38 need not
follow precisely circular arcs (although generally circular arcs
are preferred). Likewise, it has been found that the adhering means
56 and 58 may range in size to provide narrow line bonds (bonds
extending only approximately 1/8 inch from interior edges 12 and 14
respectively) to bonds extending a distance of approximately 8
inches from interior edges 12 and 14 respectively. Also, it is not
essential that such bonding extend for exactly the same distance at
each end of the fenestration.
Furthermore, it has been found that a functionally operable
fenestrated drape can be produced with a drape having a
fenestration with a peripheral shape as defined by interior edges
12, 14, 16, and 18 of FIG. 2, but including compacting means, i.e.
a pleat, only along interior edge 12 adjacent the fenestration. It
should be pointed out, however, that while such a drape is
functional, it is not as satisfactory for a neck operation as the
previously described embodiment having compacting means along both
interior edges 12 and 14.
Thus, it is apparent that the specific parameters may vary within
given ranges and according to different conditions, it being only
essential that the fenestration have the general shape shown in
FIG. 2. Pleats at one or both ends of the fenestration add to the
operability of a drape with a fenestration of that shape,
especially when used as a thyroid drape. Such a drape conforms
naturally and well to the irregularly contoured surfaces of the
body at and adjacent the neck, without excessive bunching,
buckling, and gapping around the fenestration or closing of the
opening provided by the fenestration.
Other variations and modifications will be apparent to persons
skilled in the art upon reading this disclosure. All such
variations and modifications are included within this invention
except as limited by the scope of the following claims.
* * * * *