U.S. patent number 3,783,869 [Application Number 05/236,386] was granted by the patent office on 1974-01-08 for combined sanitary napkin and medicated bandage.
Invention is credited to Leonard B. Schnipper.
United States Patent |
3,783,869 |
Schnipper |
January 8, 1974 |
COMBINED SANITARY NAPKIN AND MEDICATED BANDAGE
Abstract
Medication, in the form of an anaesthetic gel, is applied to the
incision resulting from an episiotomy by providing a gel-retaining
zone in a sanitary napkin. The medication is provided on an
impermeable layer affixed to the absorbing face of the napkin and
is protected from contamination, prior to use, by a covering
membrane. The impermeable layer between the anaesthetic gel and the
napkin prevent the absorption of the former on the latter. The
gel-retaining zone is approximately two inches by three inches in
size and is spaced by about one inch from the forward edge of the
absorbent region of the sanitary napkin.
Inventors: |
Schnipper; Leonard B.
(Brooklyn, NY) |
Family
ID: |
22889276 |
Appl.
No.: |
05/236,386 |
Filed: |
May 20, 1972 |
Current U.S.
Class: |
604/304 |
Current CPC
Class: |
A61F
13/84 (20130101); A61M 19/00 (20130101); A61F
2013/15162 (20130101); A61F 2013/15113 (20130101); A61F
2013/8476 (20130101); A61F 13/8405 (20130101) |
Current International
Class: |
A61F
13/15 (20060101); A61M 19/00 (20060101); A61m
035/00 (); A61f 013/16 () |
Field of
Search: |
;128/261,268,269,290 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Rosenbaum; Charles F.
Attorney, Agent or Firm: Burton L. Lilling et al.
Claims
I claim:
1. A sanitary napkin with medicated zone, comprising:
a slim, rectangular pad of loosely compacted fibrous material;
a pervious sheath enclosing said pad;
a rectangular patch of impervious membrane affixed to said sheath,
in symmetrical alignment with sides of said pad and in spaced
relationship from one end thereof;
a layer of medicated gel overlying said patch; and
impervious, removable cover means, for sealing said layer of
medicated gel from contact with environment.
2. The sanitary napkin according to claim 1, wherein said
rectangular patch of impervious membrane is between one-and-a-half
inches and 21/2 inches in width, and between 21/2 inches and 31/2
inches in length.
3. The sanitary napkin according to claim 2, wherein said
dimensions of said patch are from about two by about 3 inches.
4. The sanitary napkin according to claim 1, wherein said
rectangular patch of impervious membrane is of a plastic
composition.
5. The sanitary napkin according to claim 4, wherein said
rectangular patch is affixed to said sheath by means of
stitching.
6. The sanitary napkin according to claim 4, wherein said
rectangular patch is affixed to said sheath by means of an adhesive
bond.
7. The sanitary napkin according to claim 1, wherein said cover
means comprise a pair of rectangular membranes, each of said pair
being larger in dimension than one-half of said impervious patch,
said pair of rectangular membranes being arranged in partially
overlapping relationship and secured to edges of said patch in a
removable manner.
8. The sanitary napkin according to claim 1, wherein said medicated
gel carries an anaesthetic formulation.
9. The sanitary napkin according to claim 8, wherein said
anaesthetic formulation comprises, singly or in combination,
elements from the group of compounds consisting essentially of
Lidocaine, Benzocaine, and Dibucaine Hydrochloride.
10. The sanitary napkin according to claim 1, wherein said
medicated gel carries an anti-bacterial formulation.
11. The sanitary napkin according to claim 10, wherein said
anti-bacterial formulation comprises singly or in combination,
elements from the group of compounds consisting essentially of
Bazitracin, Neomycin, and Polymyxin B.
12. The sanitary napkin according to claim 1, wherein said
medicated gel carries an anti-inflammatory formulation comprising
singly or in combination, steroids from the group consisting
essentially of cortisone and hydrocortisone.
13. The sanitary napkin according to claim 1, wherein said
medicated gel carries, singly or in combination, formulations known
to be effective as anaesthetics, anti-bacterials and
anti-inflammatories.
14. A sanitary napkin with medicated zone, comprising;
a slim, rectangular pad of loosely compacted fibrous material;
a pervious sheath enclosing said pad;
a rectangular patch of impervious membrane, two inches by three
inches in size, in symmetrical alignment with the sides of said pad
and spaced approximately 1 inch from one end thereof;
a layer of medicated gel, incorporating an anaesthetic formulation,
overlying said patch; and
impervious, removable cover means, for sealing said layer of
medicated gel from contact with environment, prior to application
against the body of a patient over a region responsive to
anaesthetic medication in said gel.
15. The sanitary napkin according to claim 14, wherein said
anaesthetic formulation is selected from the group consisting
essentially of Lidocaine, Benzocaine and Dibucaine
Hydrochloride.
16. A sanitary napkin with medicated zone, comprising;
a slim, rectangular pad of loosely compacted fibrous material;
a recessed, rectangular pocket in one face of said pad, in
symmetricle alignment with long sides thereof and in spaced
relationship from one end thereof;
a pervious sheath enclosing said pad;
a rectangular patch of impervious membrane affixed to said sheath
in the base of said recessed pocket;
a layer of medicated gel overlying said patch; and
impervious, removable cover means sealing said layer of medicated
gel from contact with environment.
17. The sanitary napkin according to claim 16, wherein said
rectangular patch is affixed to the base of said pocket by means of
an adhesive bond.
18. The sanitary napkin according to claim 16, wherein said
medicated gel carries, singly or in combination, formulations known
to be effective as anaesthetics, anti-bacterials and
anti-inflammatories.
19. The sanitary napkin according to claim 18, wherein said
anaesthetic formulations are selected from the group of compounds
consisting essentially of Lidocaine, Benzocaine and Dibucaine
Hydrochloride.
20. The sanitary napkin according to claim 18, wherein said
anti-bacterial formulations are selected from the group of
compounds consisting essentially of Bazitracin, Neomycin and
Polymyxin B.
21. The sanitary napkin according to claim 18, wherein said
anti-inflammatory compounds are selected from the group of
steroids, consisting essentially of Cortisone and Hydrocortisone.
Description
BACKGROUND OF THE INVENTION
The invention relates to bandages adapted to retain an ointment or
medication against a superficial wound. It also relates to sanitary
napkins as commonly employed in the practice of feminine
hygiene.
It is common practice in the medical arts to perform a procedure,
known as an episiotomy, on a pregnant woman in labor. The procedure
consists of an incision in the perineum, extending from the vagina
towards the rectum and its function is to enlarge the birth-canal
and to facilitate delivery. This incision has proved to be an
irritating factor to many women in the post-partum period. While
healing, the wound is painful and sensitive. The application of
soothing ointments by a physician or the woman, the common recourse
in similar situations, is made difficult, if not impossible, by the
wide-spread use of sanitary napkins by such patients during the
recuperating or convalescence period. The highly absorbent material
of these napkins substantially soaks up all of the applied ointment
in a relatively short period of time and reduces the effectiveness
of such ointment.
It is, therefore, a primary object of the invention to provide a
sanitary napkin, for use by post-partum women, which retains its
fully absorbent qualities, and yet permits the ready application of
medicated ointments to the perineal incision of episiotomy.
It is a further object of the invention to provide a sanitary
napkin answering the need described above which, additionally,
dispenses the requisite medication directly and automatically;
thereby rendering the separate application of the ointment
unnecessary and contributing substantially to the comfort and
aseptic condition of the incision.
It is yet another objective of the invention to describe
constructional details leading to ease of manufacture and use of
such a combined medicated napkin and bandage, rendering it
economical to make and convenient for wide-spread use.
SUMMARY OF THE INVENTION
The objectives of the invention are achieved by constructing a
sanitary napkin of substantially rectangular form and of
conventional materials, and superimposing thereon a layer of
impermeable material, such as a plastic membrane, on which a
medicated ointment is disposed. This ointment is then covered with
another impermeable layer, to prevent contamination during the
commercial processes of distribution and sale; the covering layer
being so structured that it is readily removed by the user, just
prior to application to the affected portion of the body. For
example, the outer protective covering may be provided in two
overlapping sections, each terminating in a tab, and the tabs being
serially pulled by the user to remove the two halves of the
cover.
The nature of the ointment and its medical effect may be varied,
depending on the particular application or stage of healing of the
wound area. In general, anaesthetic qualities would be given first
priority with anti-bacterial and anti-inflammatory medication
second.
The instant invention may be applied to the treatment of conditions
other than arising from an episiotomy. For example, the invention
may also be applicable in the treatment of hemorrhoids, and if
desired it may also be used to apply other materials, such as for
example, deodorants, which are not medicinal. Other uses and
advantages will become apparent to practitioners of the medical
arts, after studying the accompanying detailed description of the
preferred embodiments.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
The constructional details of the preferred embodiments are
illustrated in the accompanying drawings, in which:
FIG. 1 is a perspective view of a sanitary napkin of the
invention;
FIG. 2 is a sectional view through the embodiment of FIG. 1, taken
along the line 2--2;
FIG. 3 is a sectional view of the sanitary napkin of FIG. 1 showing
its use in close contact with the wound, the section taken along
line 3--3 of FIG. 1; and
FIG. 4 is a sectional view through another embodiment of the
invention, wherein the medicated zone is recessed into the
absorbent body of the napkin.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
FIG. 1 shows, in perspective view, a sanitary napkin of the
invention. The napkin is constructed with an initially tubular
sheath 10 whose central portion 12 is filled with an absorbent
material 112, the assembly being flattened into a rectangular pad.
The sheath 10 and the filling 112 are made from materials -- gauze
and cotton-wool respectively, for example -- which are conventional
in the manufacture of a sanitary napkin.
Near one end of the central portion 12 of the napkin, a generally
rectangular patch of impermeable material is secured to one face of
the sheath 10. This layer, identified by numeral 20 in the drawing,
may be suitably stitched or otherwise fastened in position to the
napkin structure such as by an adhesive. The material of the layer
20 is impermeable to, and unaffected by, the medicated gel 30
overlaying same. Suitable materials are generally of the plastic
membrane family and include such compositions as nylon, mylar,
teflon, and the like.
As best shown in FIG. 2, the medicated gel is suitably protected
from contamination by a two-piece cover comprising a lower membrane
40 and an upper membrane 42, whose overlapping relationship near
the center of the gel layer 30. FIG. 2 which is a section through
the napkin of FIG. 1 shows the relative relationship of the sheath
10, the absorbent filling 112 in the central portion 12 of the
napkin, and the superposed medicated zone whose gel 30 is
completely protected from environmental influences by the
underlying, impermeable membrane 20 and the covering layers 40 and
42.
In use, the patient would remove the napkin from its box or
wrapping and peel the layers 42 and 40, in that order, from the
medicated zone, thereby exposing the gel; the napkin would then be
applied against the wound region, with the gel 30 overlying the
sensitive area. The napkin would be secured in place by any of the
conventional methods, such as by a sanitary belt or other
means.
The medicinal nature of the gel 30, as well as its size and
location relative to the sanitary napkin's central portion 12,
depends on the specific application. In general it is foreseen that
the gel may contain, singly or in combination, anaesthetic
medicines -- lidocaine, benzocaine, dibucaine hydrochloride, or
other -- antibacterial compounds -- such as bacitracin, neomycin or
polymyxin B -- and anti-inflammatory medication -- including
steroids, such as cortisone and hydrocortisone. When these
medications are not readily available in ointment form they may be
dispersed in such materials as Witch-Hazel gel, known as Hamamelis
Water in the art.
With respect to the size of the medicated zone and its location on
the napkin, both of which are critical, such gels are applied over
an impermeable base 20 whose measurements relative to the
orthogonal sides of the napkin would be in the order of about 11/2
- 21/2 by about 21/2 - 31/2 inches; and the specific location of
the forward edge of the medicated zone lying between about one-half
of an inch to about one inch and a half inches from the rear end
edge of the central region 12 of the napkin. The preferred zone is
of a 2 by 3 inch size, inasmuch as such size zone is adapted to
accommodate any incesion made during an episiotomy.
FIG. 3 shows the medicated zone of the napkin, with the gel layer
20 innermost, held against a wound zone 1 of the patient's body. In
use, the napkin of the invention, permits the mutually
contradictory purposes of the absorbent filling 112 of the napkin
and of the gel layer 30 to be achieved; the napkin is available to
absorb the vaginal discharge, and is prevented from absorbing the
medicated gel by the interposition of the impermeable layer 20; at
the same time the gel 30 and its supporting layer 20 insulate the
wound region from the chafing action of the sanitary pad and from
contact with, the possibly irritating discharge.
The alternative embodiment of FIG. 4 has an impermeable layer 220
pressed into the sheath 210 of a sanitary pad in the chosen
position within the absorbent section 212. By this constructional
variant, the gel layer 230 and the active surface of the sanitary
pad are brought to the same elevation; the protective covers 240
and 242, shown in the process of being peeled from the medicated
zone, protrude above this elevation to permit easy removal.
In yet another embodiment of the invention, the impervious layer 20
is incorporated in the portion of the sheath 10 overlying the
absorbing region 12 by impregnating the pervious structure of the
sheath with a material rendering it sensibly impervious. Compounds
such as starches, adhesives or air-curing plastics may be selected
for such service; care being taken that the resulting surface does
not affect the efficacy of the medication incorporated in the
overlying gel.
These and other variations and modifications of the basic invention
shall be construed to lie within the scope of this disclosure,
limited only by the appended claims.
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