U.S. patent number 3,797,496 [Application Number 05/251,017] was granted by the patent office on 1974-03-19 for post-extraction pads.
This patent grant is currently assigned to Physio Medics, Inc.. Invention is credited to Vincent R. Loiacono.
United States Patent |
3,797,496 |
Loiacono |
March 19, 1974 |
**Please see images for:
( Certificate of Correction ) ** |
POST-EXTRACTION PADS
Abstract
An anatomically contoured post-extraction pad made by
compressing a piece of absorbent material to form an absorbent
portion surrounded by a marginal portion of substantially greater
density. The marginal portion is cut to generally complement facial
contours of teeth adjacent an alveolus or tooth socket, whereby the
pad is retained by and between the aforesaid teeth with its
absorbent portion disposed in the alveolus. Assemblies of series
connected pads may be provided for use in multiple extraction.
Inventors: |
Loiacono; Vincent R. (New
London, CT) |
Assignee: |
Physio Medics, Inc. (New
London, CT)
|
Family
ID: |
22950129 |
Appl.
No.: |
05/251,017 |
Filed: |
May 6, 1972 |
Current U.S.
Class: |
604/286; 604/358;
604/377 |
Current CPC
Class: |
A61F
13/2022 (20130101); A61F 13/2008 (20130101); A61F
13/2051 (20130101) |
Current International
Class: |
A61F
13/20 (20060101); A61f 013/00 () |
Field of
Search: |
;32/1,33
;128/155,156,268,284,287,290,296,153 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Rosenbaum; Charles F.
Attorney, Agent or Firm: McCormick, Paulding & Huber
Claims
I claim:
1. A post-extraction pad having an absorbent portion and a marginal
portion generally surrounding said absorbent portion, said
absorbent portion having a thickness substantially greater than the
thickness of said marginal portion, said marginal portion having a
density substantially greater than the density of said absorbent
portion and having generally concave opposite end portions.
2. A post-extraction pad as set forth in claim 1 wherein said
absorbent portion extends outwardly in opposite directions beyond
said marginal portion.
3. A post-extraction pad as set forth in claim 2 wherein said
marginal portion is disposed in a generally central plane relative
to said absorbent portion.
4. A post-extraction pad as set forth in claim 2 wherein said
absorbent portion has a generally spherical configuration and said
marginal portion is disposed generally within a diametric plane of
said absorbent portion.
5. A post-extraction pad as set forth in claim 1 wherein the
opposite side edges of said marginal portion are generally
convex.
6. A post-extraction pad as set forth in claim 1 wherein said pad
comprises a single piece of material
7. A post-extraction pad as set forth in claim 7 wherein said
material is further characterized as fibrous material.
8. A post-extraction pad as set forth in claim 8 wherein said
material is cotton.
9. A post-extraction pad as set forth in claim 1 wherein said pad
is made from a plurality of materials.
10. A post-extraction pad as set forth in claim 9 wherein said pad
is made from one material and includes a core of another
material.
11. A post-extraction pad as set forth in claim 10 wherein said
core comprises a gelatinous capsule containing another
substance.
12. A post-extraction pad as set forth in claim 1 wherein at least
said absorbent portion contains a medicant.
13. A post-extraction pad as set forth in claim 12 wherein said
medicament is tanic acid.
14. A post-extraction pad as set forth in claim 1 wherein at least
said absorbent portion contains a flavoring substance.
15. A post-extraction pad assembly comprising a longitudinal series
of connected pads, each of said pads having an absorbent portion
and a marginal portion generally surrounding said absorbent
portion, said marginal portion having a density substantially
greater than said absorbent portion, each of said pads having
generally concave opposite end portions.
16. The assembly as set forth in claim 15 wherein said series of
pads is formed from a single piece of material.
17. The assembly as set forth in claim 15 wherein the thickness of
said absorbent portion is substantially greater than the thickness
of said marginal portion.
18. A post-extraction pad assembly as set forth in claim 15 wherein
said pads are connected together in end-to-end relation.
19. An anatomically contoured post-extraction pad comprising an
absorbent portion and a marginal portion disposed in a generally
central plane relative to said absorbent portion and extending
around said absorbent portion, said absorbent portion having a
thickness substantially greater than the thickness of said marginal
portion, said marginal portion having density substantially greater
than the density of said marginal portion and including concave
outwardly opening opposite end portions for respective
complimentary engagement with facial surfaces of associated teeth
adjacent an alveolus when said pad is in position between the
latter teeth with said absorbent portion partially disposed within
the alveolus whereby to retain said pad in said position.
20. An anatomically contoured post-extraction pad as set forth in
claim 19 wherein the side edges of said marginal portion are
generally convex and said marginal portion is yieldable to permit
the sides thereof to be folded respectively against opposite sides
of the gum adjacent the alveolus.
21. An anatomically contoured post-extraction pad having an
absorbent portion and a marginal portion extending outwardly from
said absorbent portion, said marginal portion having a density
substantially greater than the density of said absorbent portion
and generally concave outwardly opening opposite end portions.
Description
BACKGROUND OF THE INVENTION
This invention relates in general to surgical pads and packing and
deals more particularly with post-extraction pads for use in
dentistry and methods for making same.
A post-extraction pad used in dentistry must be absorbent, soft and
flexible and yet capable of retaining shape and form even when
substantially saturated with liquids. Various absorbent products
such as guaze pads, cotton rolls and the like have heretofore been
provided for post-extraction use. Such products are usually
relatively bulky, occupy considerable space in a patient's mouth,
and unduly restrict jaw function, particularly when the clamping
action of the jaws is relied upon to retain the product in position
in the patient's mouth, all of which contributes to patient
discomfort. The general aim of the present invention is to provide
soft yieldable absorbent post-extraction pads which are compact and
capable of being easily introduced between and retained by teeth
adjacent an area of extraction and which effectively absorb body
fluids yet retain shape and form even when substantially
saturated.
SUMMARY OF THE INVENTION
In accordance with the present invention, a post dental extraction
pad is provided which comprises an absorbent portion surrounded by
a marginal portion of substantially greater density. The marginal
portion is cut or formed to an anatomical contour to facilitate
retention between teeth adjacent an alveolus. The pad may carry a
medicament or other substance which has a soothing effect upon the
patient's gum and which may be activated upon exposure to moisture
or enzymes in the patient's mouth. Pads may be provided in
individual or series-connected form.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a plan view illustrating successive steps in a process
for making an assembly of post-extraction pads embodying the
present invention.
FIG. 2 is a sectional view taken generally along the line 2--2 of
FIG. 1.
FIG. 3 is a plan view of a dental extraction pad embodying the
present invention shown positioned in an alveolus and illustrates
the manner in which a pad is retained by and between teeth adjacent
the alveolus.
FIG. 4 is a vertical sectional view through a patient's mouth and
shows the post-extraction pad of FIG. 3 positioned in the
alveolus.
FIG. 5 is similar to FIG. 3, but illustrates the manner in which an
assembly of series-connected pads embodying the invention is used
in multiple extraction.
FIG. 6 is a plan view of another assembly of post-extraction pads
embodying the invention.
FIG. 7 is a sectional view taken generally along the line 7--7 of
FIG. 6.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS AND METHOD FOR
MAKING SAME
Turning now to the drawing, FIGS. 1 and 2, viewed from left to
right, illustrate successive steps and a method for making a
post-extraction pad assembly, indicated generally at 10 from a
continuously advancing strip of absorbent material 12, which may,
for example, comprise a fibrous material such as cotton. The
assembly 10 comprises a plurality of individual post-extraction
pads designated generally at 14, 14 and connected in longitudinal
series and end-to-end relation.
Each pad 14 has an absorbent portion 16 and a marginal portion 18
which generally surrounds the absorbent portion and has a density
substantially greater than the density of the absorbent portion. In
accordance with the invention the absorbent portion is
substantially thicker than the marginal portion and projects
outwardly therefrom in at least one direction. In the illustrated
embodiment 14 the absorbent portion 16 has a generally spherical
configuration, the marginal portion intersecting the absorbent
portion or being disposed generally within a central or diametrical
plane relative thereto. Thus, as shown, the absorbent portion 16
projects both above and below the marginal portion 18. Each pad 14
has opposite ends, designated at 20, 20, cut to generally concave
anatomical shape for a purpose which will be hereinafter explained.
The side edges of each pad 16 are designated at 22, 22 and have a
generally convex form, substantially shown. Each pad 16 is
connected to the next successive pad in the series by a pair of
connecting portions 24, 24.
The assembly 10 is made by continuously advancing the strip of
material 12 from left to right as shown in FIGS. 1 and 2 and
performing a successive series of pressing and cutting operations
thereon as the strip advances to successively form the pads 14, 14.
More specifically, each pad is made by compressing at least
portions of the material 12 with pressing dies or the like (not
shown) to reduce the thickness and increase the density thereof and
thereby define the absorbent portion 16 and generally define the
denser marginal portion 18 which surrounds it. Thereafter, the ends
20, 20 are cut to generally arcuate outwardly opening shape,
substantially as shown. The side edges 22, 22 of each pad are also
cut to shape and, if desired, this cutting operation may be
performed simultaneously with the operation of forming the ends 20,
20. The pads 14, 14 may be separated from each other during the
cutting operation for individual sanitary packaging; however, in
the illustrated case, the cutting operations on the sides and ends
of the pads are performed in such manner as to allow the pads 14,
14 to remain connected to each other in end-to-end relation by the
connecting portions 24, 24 for separation at time of use.
The manner in which a single pad 14 is used is illustrated in FIGS.
3 and 4 wherein the pad 14 is shown positioned between two teeth
designated T.sub.1 and T.sub.2 adjacent an alveolus indicated at A.
Referring to FIG. 3 it will be noted that the ends 20, 20 are
anatomically contoured to generally conform to associated facial
surfaces of the teeth T.sub.1 and T.sub.2. Each end 20 engages an
associated tooth between its coronal belly or the central region of
its crown and its dento-enamel junction or in the region of the
junction between its root and crown. Thus, the generally
anatomically contoured ends 20, 20 cooperate with associated facial
surfaces of the two teeth T.sub.1 and T.sub.2 to retain the pad 14
in position therebetween with its absorbent portion 16 disposed
generally within the alveolus A. The marginal portion 18 is readily
yieldable and may be folded down against opposite sides of the
patient's gum, substantially as shown in FIG. 4, to further retain
the pad 14 in an effective absorbent position. Since the marginal
portion 18 has a substantially greater density than the absorbent
portion 16, the marginal portion tends to retain its shape even
after the absorbent portion has become substantially saturated with
liquid. Due to the manner in which the pad 14 cooperates with the
teeth which retain it, the pad tends to remain in position without
impairing normal jaw movement. The pads 14, 14 may also be used in
connected groups where there has been multiple extraction as will
be hereinafter further illustrated.
The individual pads 14, 14 which comprise the assembly 10 may have
at least the absorbent portions thereof impregnated or otherwise
treated with a medicament or other substance which has a soothing
affect upon the tender gum area. Tanic acid may, for example, be
used in treating the pads 14, 14. The pads may also be flavored to
create a generally pleasing effect. Preferably, the pads are
packaged in dry condition, the substance which the pads contain
being activated by moisture or enzymes in the patient's mouth.
Another post-extraction pad assembly, indicated generally at 26,
embodying the present invention and made in accordance with a
method thereof is illustrated in FIGS. 6 and 7. The assembly 26 is
similar in some respects to the assembly 10, previously described,
and comprises a longitudinal series of individual post-extraction
pads 28, 28 connected together in end-to-end relation.
A typical pad 28 includes an absorbent portion 30 and a marginal
portion 32 which surrounds the absorbent portion and has a density
substantially greater than the density of the absorbent portion.
The side edges of the pad designated at 34, 34 have a generally
convex configuration. Each pad is connected to the next successive
pad in the assembly along a transversely extending line of
weakening 36, which may, for example, comprise a score line or a
line of perforation. Preferably, and as shown, each pad 28 also
includes a core 38 disposed within its absorbent portion. The core
may take various forms and may, for example, comprise an innocuous
yieldable substance adapted to aid in conforming the absorbent
portion to complement the configuration of tender gum areas when
the pad is positioned in an alveolus. In the illustrated embodiment
the core 38 comprises a soluble gelatinous capsule containing
another substance 40, which may, for example, comprise a medicament
adapted to be released into the absorbent material when the soluble
capsule is exposed to enzymes in the patient's mouth.
The initial operations in making the assembly 26 are substantially
identical to those previously described. The pads 28, 28 may be cut
from the assembly 26 at the time of manufacture for individual
packaging, but preferably, and as shown, the pads are supplied in a
continuous form assembly or strip for separation at time of use.
Separation is effected by tearing one or more pads 28, 28 from the
assembly or strip 26 along an associated line of weakening 36 which
is formed on the assembly during the manufacturing operation.
The pads 28, 28 may be used individually or in connected groups
where there has been multiple extraction. FIG. 5 illustrates the
manner in which the assembly 26 is employed in a multiple
extraction situation. In the illustrated case two adjacent teeth
have been removed leaving two teeth designated T.sub.3 and T.sub.4
adjacent the area of extraction. Two pads 28, 28 which comprise an
assembly 26 have been torn from a somewhat longer assembly and
position between the teeth T.sub.3 and T.sub.4. While the opposite
ends of the assembly 26 are not specifically contoured to
complement facial surfaces of associated teeth, as in the previous
embodiment, it will be evident that due to the yieldable nature of
the resilient material from which the assembly is made, the ends
thereof will conform to the facial surfaces of teeth adjacent an
area of extraction when the assembly 26 is positioned therebetween.
Thus, the exposed ends 36, 36 yield to generally conform to the
facial surfaces of the teeth T.sub.3 and T.sub.4. The side marginal
portions of each pads 28, 28 are bent or folded down against
opposite sides of the gum to aid in further retaining the assembly
in position.
* * * * *