U.S. patent number 3,705,585 [Application Number 05/162,927] was granted by the patent office on 1972-12-12 for preformed surgical sponge.
Invention is credited to Dennis W. Saffro.
United States Patent |
3,705,585 |
Saffro |
December 12, 1972 |
PREFORMED SURGICAL SPONGE
Abstract
A preformed surgical sponge particularly for use after oral
surgery involving extraction of a tooth is preformed to
specifically fit over and around the gum area containing a cavity
from which a tooth has been extracted. The sponge body is formed
with a tapering trough that receives and compresses the gum. A pair
of longitudinally extending flange portions on the body are adapted
to overlie adjoining teeth and to be clamped between such teeth and
opposed teeth to retain the preformed sponge in position. In
another embodiment the sponge body is made of a preformed folded
strip.
Inventors: |
Saffro; Dennis W. (Los Angeles,
CA) |
Family
ID: |
22587706 |
Appl.
No.: |
05/162,927 |
Filed: |
July 15, 1971 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
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874448 |
Nov 6, 1969 |
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Current U.S.
Class: |
604/385.01;
433/136; 604/373; 606/21; 604/374 |
Current CPC
Class: |
A61F
13/36 (20130101); A61F 13/2022 (20130101); A61F
13/2008 (20130101) |
Current International
Class: |
A61F
13/20 (20060101); A61f 007/12 (); A61f 013/00 ();
A61b 017/12 () |
Field of
Search: |
;32/34,35,36
;128/303.1,156,296,325 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Pace; Channing L.
Parent Case Text
REFERENCE TO RELATED APPLICATION
This is a continuation-in-part of my co-pending application, Ser.
No. 874,448, filed on Nov. 6, 1969, for Pre-Formed Surgical Sponge
now abandoned.
Claims
I claim:
1. A preformed surgical sponge for use after extraction of a tooth
comprising
a body having a pressure-receiving side of a length sufficient to
substantially span three adjoining teeth,
said body having a pressure-exerting side oppositely disposed with
respect to said pressure-receiving side and having a length
substantially equal to a cavity from which a tooth has been
extracted,
said pressure-exerting side being formed with a longitudinally
extending trough adapted to receive a portion of the gum containing
said cavity.
2. The sponge of claim 1 wherein said trough has facing walls that
are inwardly tapered toward each other,
whereby as the sponge is emplaced at the site of an extraction, the
sides of the gum are compressed toward each other and toward the
supporting jaw by the wedging action of the tapering trough
walls.
3. The sponge of claim 2 wherein said pressure receiving side
includes a portion projecting therefrom and having a length
substantially equal to the length of said pressure-exerting
side,
whereby the sponge may be retained in place by pressure exerted
thereon by contact of said projecting portion with an edentulous
ridge that is opposite said cavity.
4. The sponge of claim 3 wherein the width of said projecting
portion is less than the width of said pressure-receiving side.
5. A preformed surgical pad for treatment of an extraction site
after oral surgery comprising
a body of resilient material having a width greater than the width
of a gum and having a length substantially equal to the extent of
the extraction site between adjoining teeth on either side
thereof,
said body having a pair of integrally formed furcations each
extending for the full length thereof from oppositely disposed edge
portions of the body,
said furcations tapering outwardly from each other to provide a
widening trough adapted to receive and compress toward each other
the sides of an extraction cavity, and
a pair of clamping flanges integrally formed with said body;
each flange extending from respectively opposite ends of the body
for a distance sufficient to permit secure clamping of the flange
between a first tooth adjoining the extraction site and a second
tooth opposed thereto.
6. The pad of claim 5 including a protuberance integrally formed
with said body and extending therefrom between said flanges in a
direction opposite to the extent of said furcations,
whereby the pad may be retained in place by pressure exerted
thereon by contact of said protuberance with an edentulous ridge
that is opposite said cavity.
7. A method of treating an extraction site after oral surgery
comprising the steps of
forming a sponge body with a pressure-receiving side having a
length sufficient to bridge the site and a tooth on either side of
the site,
further forming said body with a pressure-exerting side having a
length substantially equal to the extent of said site between said
teeth on either side and with a full length trough in said pressure
exerting side having tapering walls,
fitting said body to the extraction site with the walls of said
trough straddling opposite sides of and compressing the gum
containing the extraction site, and with said pressure-receiving
side overlying a tooth on either side of said site, and
applying a force to clamp said pressure-receiving side against the
teeth which it overlies,
whereby the gum at the extraction area is compressed by and between
the walls of said trough.
8. The method of claim 7 including the step of refrigerating said
formed sponge body before fitting the body to the extraction site,
whereby the gum at the extraction area is also cooled by the walls
of said trough.
9. A preformed surgical pad for treatment of an extraction site
after oral surgery comprising
a body of resilient material having a width greater than the width
of a gum and having a length substantially equal to the extent of
the extraction site between adjoining teeth on either side
thereof,
said body having a pair of furcations each extending for the full
length thereof from oppositely disposed edge portions of the
body,
said furcations tapering outwardly from each other to provide a
widening trough adapted to receive and compress toward each other
the sides of an extraction cavity,
said body having a depth greater than the distance that teeth
adjoining the extraction site extend from the gum whereby said
sponge body when wet will expand over adjoining teeth at the
extraction site and provide a pair of clamping flanges extending
from respectively opposite ends of the body to at least partly
overlap said adjoining teeth so that an opposing tooth may press
upon said body and force it against said cavity and against said
adjoining teeth.
10. The pad of claim 9 wherein said pad is formed of a strip having
a thickness of about one half the length of said body,
said strip having both of its opposite end portions formed with a
trough defining first and second pairs of legs,
said strip being folded in two so that said end portion troughs are
aligned with each other and said pad body is thereby formed of a
single strip of folded material.
11. The pad of claim 9 wherein said body has a second pair of
furcations each extending for the full length thereof from
oppositely disposed edge portions of the body, each extending in a
direction opposite to the extent of said first mentioned pair of
furcations and toward a second extraction site that is directly
opposed to said first mentioned extraction site, the furcations of
said second pair tapering outwardly from each other to provide a
widening trough adapted to receive and compress toward each other
the sides of said second extraction site.
12. A preformed surgical pad for treatment of an extraction site
after oral surgery comprising
a strip of sponge material adapted to be folded in two and applied
to the extraction site, said strip comprising
a body having a width greater than the width of the gum at the
extraction site, having a length greater than the sum of the length
of said site and twice the distance that teeth adjoining said site
extend from the gum, and having a thickness of about one half the
length of said site, said strip having opposite ends thereof each
having a central portion cut away to form a trough bounded by first
and second legs, whereby when said strip is folded in half said
troughs and legs at opposite ends are aligned with each other to
form a unitary trough adapted to receive a portion of the gum at
the extraction site, and whereby the central portion of said strip
extends beyond the teeth adjoining said site so as to be subject to
compression against the site and against adjoining teeth by
pressure of a tooth opposite said site.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to the field of oral surgery and
specifically concerns a method and apparatus for treatment of the
site of a tooth extraction to assist in reduction of swelling and
post-operative bleeding.
2. Description of Prior Art
It is common practice in post-operative treatment of tooth
extraction sites to provide the patient with a gauze or cotton pad
that is rolled or otherwise formed to fit into place by the doctor
or his assistant. Such a pad is normally held in place by a
clamping action of the opposing teeth. The particular mating of
such a pad to the post-operative site is haphazard at best, and
fails to provide optimum retention of the tissue in close
approximation after surgery. Adequate pressure on the tissue is
difficult to obtain with such devices. Further, it often occurs
that bleeding of the tissue will recur after the patient has left
the dentist's office. While it is desirable to be able to reuse or
replace the compression pad, conventional devices employed for this
purpose cannot be readily reused. Therefore, either the patient
will be forced to return to the doctor's office or, if such
recurrence of bleeding is anticipated, an additional supply of
conventional gauze pads may be provided. Nevertheless, even in the
latter situation, it will be necessary for the patient himself to
emplace the pad, a task that would require, at the very least,
prior knowledge and experience.
SUMMARY OF THE INVENTION
The present invention, according to a preferred embodiment thereof,
comprises a preformed surgical pad for post-operative surgery
involving extraction of a tooth which provides improved compression
and positioning of tissue, is more readily emplaced, and may be
easily cleaned and reused without difficulty by the patient
himself.
A preformed surgical pad comprises a body of resilient material
having a width greater than the width of the gum and having a
length substantially equal to the extent of the extraction site
between a pair of adjoining teeth on either side of the site. A
pair of integral furcations extending the full length of the body
from oppositely disposed edge portions provide an inwardly tapering
through that is adapted to receive and compress toward each other
the sides of an extraction cavity. In one embodiment a pair of
clamping flanges, also formed integrally with the pad body, extend
from respectively opposite end portions of the body for a distance
sufficient to permit a secure clamping of these flanges between
opposing teeth that adjoin the extraction site. In another
embodiment, the flanges are formed by expansion of the sponge body
over adjoining teeth when the sponge is placed at the extraction
site and wetted.
The sponge is formed in a number of different sizes, each
particularly configured to closely approximate contours and sizes
of different teeth and gum areas.
DESCRIPTION OF THE DRAWINGS
FIG. 1 comprises a pictorial illustration of a preformed surgical
sponge according to principles of this invention,
FIG. 2 is a cross-sectional view taken through an oral cavity and
showing the sponge of the present invention emplaced,
FIG. 3 shows a side view of the device of this invention in place
between opposing teeth,
FIG. 4 is a side view of a modified form of the invention,
FIG. 5 is an end view of the modified arrangement of FIG. 4,
FIG. 6 is a pictorial view of an embodiment employing a folded
strip of sponge material,
FIG. 7 illustrates a strip of material that is folded to provide
the sponge of FIG. 6,
FIG. 8 shows the sponge of FIG. 6 in place at an extraction site,
and
FIG. 9 is an illustration of another embodiment of the
invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT
An essential aspect of post-operative care of most types of surgery
includes adequate retention of the adjoining tissue in a suitably
fixed position during the healing process. An additional
consideration, particularly useful to stop post-operative bleeding,
is the compression of the tissue areas adjoining the surgery.
Accordingly, a resilient pad as illustrated in FIG. 1 is
specifically preformed and sized to closely mate with the tissue
area adjoining an oral surgery involving tooth extraction. This
provides both optimum positioning of the adjoining tissue and
compression of the tissue areas for the purpose of minimizing the
bleeding.
The preformed sponge has a resilient body 10 formed with a width
indicated as a that is greater than the width of the gum from which
a tooth has been extracted. The body has a length b that is
substantially equal to the extent of the extraction site between
adjoining teeth. Integrally formed with he body 10 and extending
downwardly in FIG. 1 from oppositely disposed side portions thereof
are a pair of furcations 12 and 14 having facing walls or sides 16
and 18 tapering outwardly to provide a widening trough 20 that is
formed to straddle and compress the gum at an extraction site. The
furcations 12 and 14 and the trough 20 formed thereby extend for
the full length b of the resilient body which thus provides a
pressure exerting side of the device.
Integrally formed with the body 10 and extending from respectively
opposite ends of the body for a distance sufficient to overlie at
least a portion of the tooth adjoining the extraction site are a
pair of clamping flanges 22 and 24. Collectively, the flanges 22
and 24, together with the sponge both therebetween, have a length c
that is sufficient to substantially span three adjoining teeth, as
best illustrated in FIG. 3. As shown in this Figure, these flanges
together with the side of the body 10 that is disposed oppositely
with respect to the trough 20 provide a pressure receiving side of
the sponge pad.
Although the sponge flanges are shown as extending for the full
distance of adjoining teeth on either side of the cavity, these
flanges may be made considerably shorter. As will be described in
connection with another embodiment of the invention, each of these
flanges may overlap the teeth adjoining the cavity by only a
relatively small amount.
As will be seen in FIG. 2, the gum 28 at the extraction site
includes a cavity 30 from which a tooth has been removed. The
furcations 12 and 14 are placed downwardly over the sides of the
gum compressing the adjoining tissue area and firmly positioning
the tissue for proper healing. The sponge pad and its furcations
fit between the adjoining cheek tissue 32 and the side of the
tongue 34 but is, nevertheless, held firmly in place by the
pressure exerted by opposing teeth 36, 38, 40 which are in contact
with the upper or pressure-receiving side of the sponge pad as
illustrated in FIG. 2.
In the side view of FIG. 3, it can most readily be seen that the
flanges 22 and 24 are each clamped between opposing pairs of teeth
36, 42 and 40, 44 to retain the device firmly in position. The
opposing tooth 38 intermediate teeth 36 and 40 provides a firm
pressure on the pressure-receiving side of the sponge pad directly
over the body portion 10 thereof to press such body portion and the
trough thereof downwardly over the gum portion 28 for optimum
retention of the gum tissue in close approximation.
Opposing tooth 38 will operate to exert a clamping pressure against
the pressure receiving side of the sponge pad because of the
dimension of the pad (as measured along the axis of the tooth). The
pad is formed with an overall height between the innermost portion
of the trough and the upper pressure receiving side of the pad so
that this pressure receiving side will extend above the gum line by
an amount greater than the corresponding extension of adjoining
teeth 42 and 44 above the gum line. Accordingly, upon closing of
the mouth opposing tooth 38 will contact the pressure receiving
side of the sponge pad even if the flanges 22 and 24 only partially
overlap adjoining teeth 42, 44.
Illustrated in FIGS. 4 and 5 is an edentulous design specifically
adapted for patients having no teeth in the area of the opposing
jaw immediately opposite the extraction cavity. In this embodiment,
the preformed sponge includes substantially all of the portions,
shapes, sizes, and configurations of the sponge in FIG. 1. Thus the
sponge pad of this embodiment includes a pair of furcations 112 and
114 depending from edges of a body 100 that includes integral
flanges 122 and 124, all constructed and arranged as described in
connection with the corresponding components illustrated in FIG. 1.
In this embodiment, however, for the purpose of insuring and
obtaining proper pressure and retention of the sponge pad in the
mouth of the patient having an edentulous (toothless) ridge, there
is provided a raised portion or protrusion 50 that extends
upwardly, as illustrated in FIGS. 4 and 5, from the body 100
between the flanges 122 and 124. The flange has a width h somewhat
less than the width a of the main sponge body, in order to better
conform with the relatively narrow edentulous ridge, and has a
length i substantially equal though slightly less than the length b
of the body portion 10 so as to provide a pressure-receiving side
for the body portion that is substantially coextensive
therewith.
It will be readily appreciated that where a patient has had a prior
extraction immediately opposed to the extraction which is to be
treated with the sponge pad of this invention, there may be lacking
a tooth such as that illustrated at 38 in FIG. 3 to provide the
required pressure upon the sponge body 10. Any one or more of these
teeth 36, 38, and 40 may be lacking. Accordingly, the edentulous
protrusion 50 will enable the opposing toothless ridge to contact
the sponge body and apply the necessary retaining force and
pressure thereto.
Sponges built according to the present invention may be made of
either preformed cotton gauze or preformed, absorbent, moderately
firm to extra firm foam rubber. Generally, the particular degree of
resilience provided can be widely varied within the specific
desires of individual dentists. Foam rubber sponges of the present
invention can be readily cleaned, rinsed, and reused by the patient
himself, if necessary or desirable. It is contemplated that sponges
of the type described herein will be pre-sterilized and,
preferably, refrigerated just prior to use by the dentist so that
the sponge when applied will cool the tissue adjoining the surgery
to reduce swelling.
Since the improved tissue positioning and pressure exertion
available with the sponge of this invention is particularly due to
the specified configuration, it is desirable to make the sponge in
a number of different sizes each of which would be most efficiently
sized and configured for a different tooth area and different size
patients. For example, a small size may be employed for lower
anterior teeth, medium size for upper anterior teeth, and upper and
lower bicuspids, large size for upper and lower molars, extra large
size for multiple extractions and larger surgical sites, and
edentulous size for an extraction site with no opposing
occlusion.
Typical dimensions (in millimeters) for different sponges of the
several sizes are set forth in Table I. It is noted that the
various dimensions are identified in FIGS. 1, 4 and 5. Although any
given dimension may be indicated on the drawings as applied to the
edentulous design or the non-edentulous design of FIG. 1, it will
be readily appreciated that the specific dimensions apply for the
sponge pad portions that are common to the two illustrated
embodiments.
TABLE I
Dimension size a b c d e f gh i Small 8 8 20 6 23 18 6 Medium 10 10
25 8 26 20 6 Large 12 12 28 10 31 25 6 Extra Large 12 25 40 8 26 20
6 Edentulous 12 25 40 8 26 20 610 23
Illustrated in FIGS. 6, 7 and 8 is a modified form of the sponge
shown in FIGS. 1, 2 and 3. The sponge of FIGS. 6, 7 and 8 may be
more readily fabricated with less expensive tooling and from
relatively thin sheet material. In this embodiment, the sponge is
made from a relatively elongated strip 110 of sponge or similar
material having a width a corresponding to the width of the sponge
of FIG. 1 and having a length b that is greater than the sum of the
length of the extraction site and twice the distance that adjoining
teeth (such as teeth 42, 44 of FIG. 8) extend from the gum. The
strip has a thickness t that is one-half the length of the
extraction site. As best seen in FIG. 7, the ends of strip 110 are
formed with mutually congruent troughs 20-a and 20-b that are
defined by legs 12a and 14a on the one end of the body and by legs
12b and 14b on the other end of the body.
When the strip is to be used, it is folded about a transverse axis
111 to the form illustrated in FIG. 6. Upon such folding, the
congruent troughs 20a and 20b, and legs, pairs 14a and 14b and 12a
and 12b are aligned to provide furcations 212 and 214 that are
structurally and functionally similar to furcations 12 and 14 of
the sponge pad of FIG. 1. Just as with the previously described
furcations, those shown in FIG. 6 will straddle and compress the
gum at the extraction site, forming a trough 220 that extends for
the full length of the sponge body. This trough provides a pressure
exerting side of the device.
The sponge material of which strip 110 is formed, will expand when
wet. Accordingly, when positioned at an extraction site, as shown
in FIG. 8, the sides of the central portion of the folded strip
110, sides 222 and 224, will expand to partially overlap the
adjoining teeth 42 and 44, thus providing a pair of clamping
flanges of limited extent but similar in structure and function to
the clamping flanges 22, 24 of FIG. 1 and flanges 122 and 124 of
FIG. 4. As previously described, the length of the strip 110 is
greater than the sum of the length of the cavity and twice the
extent of the teeth above the gum line. Accordingly, when the strip
110 is folded to form the pad shown in FIGS. 6 and 8, the pressure
receiving surface of the pad extends well beyond the grinding
surface of teeth 42, 44. Thus, when the sponge is wet, it may
freely expand, but only at portions above the teeth 42, 44 (as
viewed in FIG. 8), to at least partially overlap these teeth. Thus,
all of the opposing teeth 36, 38 and 40 may cooperate to some
extent to insure retention of the pad at the cavity site.
Although the embodiment of FIG. 6, 7 and 8 is preferably formed of
a relatively thin strip folded in two, as described above, it will
be readily appreciated that this embodiment may also be made in a
unitary preformed configuration substantially identical to the
folded configuration illustrated in FIG. 6.
For large extraction sites and particularly for situations where
upper and lower teeth on the same side are extracted, the sponge
pad is preformed of a resilient material in the configuration
illustrated in FIG. 9. This sponge pad has a width a that is
substantially the same as the width of the previously described
embodiments, and has a length b that is considerably greater. As
will be readily understood, this pad may be cut to any smaller size
as desired or required for a particular extraction. The arrangement
of FIG. 9, being adapted for use where both upper and lower teeth
are extracted, is formed with two oppositely disposed and directed
troughs 320a and 320b, each extending the full length of the sponge
body and each defined by a pair of furcations 312a, 312b and 312c,
312d. Accordingly, the furcations and troughs will straddle and
compress the gum at the extraction site for both upper and lower
jaws when the pad is placed at the cavity and the jaws are
closed.
It will be readily understood that the particular dimensions of the
embodiments of the FIGS. 6 through 9, like dimensions of earlier
described embodiments, will vary with the type and number of
extractions and age and size of the patient. Nevertheless,
exemplary dimensions of typical pads of the embodiments of FIGS. 6,
7, 8 and 9 are shown in Table II. These dimensions are all given in
millimeters and, as with the previous table, are approximate
dimensions only. Obviously other sizes, whether larger or smaller,
may be employed for the described sponges as deemed necessary or
desirable.
TABLE II
Dimension Size a b tx yz h Small 13 19 53 36 Medium 16 25 54 49
Large 16 25 4 49 16
There has been described a preformed surgical sponge that is easy
to handle, convenient and aesthetic to use, and which will provide
an improved tissue compression and positioning for post-oral
surgery to thus reduce bleeding and to aid in healing.
* * * * *