U.S. patent number 3,768,916 [Application Number 05/203,629] was granted by the patent office on 1973-10-30 for sponge with encapsulated liquid.
This patent grant is currently assigned to Medical Supply Company. Invention is credited to Carl F. Avery.
United States Patent |
3,768,916 |
Avery |
October 30, 1973 |
SPONGE WITH ENCAPSULATED LIQUID
Abstract
A scrubbing unit includes a sponge with a frangible ampoule
containing a liquid soap disposed within a slot in the sponge. A
cap fits on the sponge over the slot and pinches in the sides of
the sponge to compress a portion of the sponge across the ampoule
and thereby close the slot. This prevents fragments of the broken
ampoule from coming out of the sponge and helps to directionalize
the flow of soap through the sponge by reducing the permeability of
the sponge adjacent the cap.
Inventors: |
Avery; Carl F. (Rockford,
IL) |
Assignee: |
Medical Supply Company
(Rockford, IL)
|
Family
ID: |
22754699 |
Appl.
No.: |
05/203,629 |
Filed: |
December 1, 1971 |
Current U.S.
Class: |
401/132;
401/196 |
Current CPC
Class: |
A61M
35/006 (20130101) |
Current International
Class: |
A61F
13/40 (20060101); A46b 011/04 () |
Field of
Search: |
;401/132,206,196,201
;128/269,260 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Charles; Lawrence
Claims
I claim:
1. A scrubbing unit for use in cleansing the skin around a wound,
said unit comprising a block-shaped sponge having a top surface and
a bottom scrubbing surface, a slot formed in the upper portion of
said sponge and opening upwardly out of said top surface, a
frangible ampoule disposed within said slot, a liquid cleanser
contained within the ampoule to permeate the sponge when the
ampoule is broken, a rigid and non-permeable cap having a central
web disposed across said top surface and said slot, and means
integral with opposite margins of said web and compressing opposite
sides of said sponge inwardly above said ampoule and compressing
said sponge against said web thereby to clamp the sponge against
the web, to close said slot, and to directionalize the flow of the
liquid cleanser downwardly through the sponge and toward said
scrubbing surface.
2. A scrubbing unit for use in cleansing the skin around a wound,
said unit comprising a block-shaped sponge having a top surface and
a bottom scrubbing surface, a slot formed in the upper portion of
the sponge and opening out of said top surface, a frangible ampoule
disposed within said slot, a liquid cleanser contained within the
ampoule to permeate the sponge when the ampoule is broken, and a
rigid and non-permeable cap having a central web disposed across
said top surface and said slot, opposing flanges integrally joined
with opposite margins of said web and inclined downwardly and
inwardly therefrom into compressive engagement with opposite sides
of the sponge, and an upwardly and inwardly inclined shoulder
formed along the inner end of each flange and coacting with the
latter and said web to compress the portion of the sponge above
said ampoule thereby to hold the sponge against the web, to close
said slot and prevent fragments of the broken ampoule from coming
out of the sponge and to directionalize the flow of the liquid
cleanser through the sponge and toward said scrubbing surface so as
to avoid having to wet the sponge with water before usage.
Description
BACKGROUND OF THE INVENTION
This invention relates to scrubbing units such as may be used in
the first-aid treatment of a wound to clean the skin area around
the wound preparatory to the application of a bandage. More
particularly, the invention relates to the type of unit in which a
frangible ampoule containing a liquid cleanser or soap is disposed
within a chamber defined by a slot in a sponge and is crushed when
the sponge is squeezed to release the soap to permeate the sponge
so that an outer surface of the sponge may be used to scrub the
skin.
SUMMARY OF THE INVENTION
The primary object of the present invention is to provide a new and
improved scrubbing unit of the above general character in which the
liquid soap more readily permeates the sponge to avoid the
necessity of wetting the sponge with water before the unit is
used.
A further object is to achieve the foregoing by eliminating
blockage of the flow of the soap out of the chamber and through the
sponge and, at the same time, the sponge itself prevents the glass
fragments from the broken ampoule from coming out of the
sponge.
A more detailed object is to prevent the glass fragments from
coming out of the sponge by closing the slot around the ampoule in
a novel manner and, as an incident thereto, to directionalize the
flow of the soap toward the scrubbing surface of the sponge.
Invention also resides in the novel construction and coaction of
parts of the scrubbing unit to render a portion of the sponge
relatively impermeable to directionalize the flow of the soap
through the sponge and to facilitate easy crushing of the ampoule
and handling of the unit when scrubbing clean the skin area around
the wound.
These and other objects and advantages of the present invention
will become more apparent from the following detailed description
when taken in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of an assembled scrubbing unit
embodying the novel features of the present invention.
FIG. 2 is a perspective view of parts of the unit aligned for
assemblage as a unit.
FIG. 3 is an enlarged end cross-sectional view of a partially
assembled unit.
FIG. 4 is an enlarged end cross-sectional view of a fully assembled
unit.
FIG. 5 is an enlarged side cross-sectional view of the unit showing
the ampoule being broken to release the liquid soap.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
As shown in the drawings for purposes of illustration, the present
invention is embodied in a scrubbing unit 10 comprising a pad 11
which may be used to cleanse the skin around a wound before
applying an adhesive bandage. If the skin is not cleaned before the
bandage is applied, it is likely that the bandage will come loose
and the wound will thereby be left unprotected with the result that
the likelihood of infection is greatly increased. Therefore, it is
desirable to clean the skin around the wound to remove any foreign
substances present so that the bandage which is to be applied will
stick to the skin and protect the wound. Unfortunately, washing
facilities are not always immediately available and, as a result,
an injured person either neglects to properly clean and protect his
wound or must go elsewhere in order to clean the injured area.
To provide for on-the-spot cleaning of the skin area around the
wound, the scrubbing unit carries its own supply of liquid cleanser
13. The cleanser is contained in a frangible glass ampoule 14 and
disposed within the absorbent pad of material 11 so that, when the
ampoule is broken, the cleanser is released into the pad for use in
cleansing the skin. Herein, the pad is a sponge formed from a
flexible, resilient and soft material such as polyurethane foam to
prevent undue irritation of the wound as the unit is rubbed
back-and-forth across the skin to clean the area around the wound.
More particularly, the sponge 11 is formed in the shape of a
rectangular block which is about 2 inches long, 1 inch wide and
one-half inch thick and includes a slot 15 cut through the upper
surface 16 into the sponge to serve as a chamber for containing the
ampoule 14. The latter is substantially cylindrical in shape and is
approximately 11/2 inches long and one-fourth inch in diameter and
contains the cleanser which is a liquid soap.
Normally several of the scrubbing units 10 are supplied in a packet
(not shown) carried in a first-aid kit. When it is desired to use
one of the units, the latter is removed from the packet and
squeezed to break the ampoule 10 (see FIG. 5) which thereby
releases the soap into the sponge 11 to flow toward the lower or
scrubbing surface 17 of the sponge. In use, the sponge is held
against the skin under a slight pressure and rubbed gently back and
forth to clean the skin area around the wound.
In accordance with the primary aspect of the present invention, the
scrubbing unit 10 includes a cap 19 which functions in a novel
manner to enable the liquid soap 13 to permeate the sponge 11 more
readily and thus eliminate the necessity of having to wet the
sponge with water before use. For this purpose, the ampoule 14
alone is contained within the sponge thereby to avoid any
substantial blockage of the flow of the soap from the slot 15 and
through the sponge. The cap serves to hold the slot closed to
prevent glass fragments from coming out of the slot in the sponge
by compressing the slotted portion of the sponge across the ampoule
so that nothing additional is required to prevent glass fragments
from migrating to the surfaces of the sponge. This has the added
advantage of rendering that portion of the sponge relatively
impermeable as compared with the remainder of the sponge and thus
helps to directionalize the flow of the soap from the slot toward
the scrubbing surface 17 so that water need not be used to draw the
soap to the scrubbing surface. In addition, the cap serves as a
backing against which the ampoule may be crushed easily between the
fingers and as a handle so that the scrubbing unit is easier to
hold during use.
In the fully assembled scrubbing unit 10 as shown in FIG. 1, the
cap 19 includes a central web 20 which spans two side flanges 21.
The latter are joined integrally with the web along opposing edges
23 thereof and fit along the opposite sides 24 of the sponge with
the web in engagement with the upper surface 16 to cover the slot
15. Preferably, the flanges are folded toward each other under the
edges of the web and include upturned shoulders 26 facing each
other. The facing surfaces 27 (see FIG. 4) of the shoulders
compress the sponge between the two flanges 21 and the upper ends
29 of the shoulders pinch a portion of the sponge against the web
20 to keep the sponge 11 from easily being pulled loose from the
web.
As shown in FIG. 4 the sponge is compressed above the ampoule 14
thereby shutting the slot 15 to prevent fragments of the broken
ampoule from coming out of the unit 10. In addition, the
compressing of the sponge above the ampoule and between the two
shoulders 26 reduces the permeability of the sponge adjacent the
web. This prevents a substantial portion of the soap 13 from
flowing into the area adjacent the cap so that more soap is
directed toward the scrubbing surface 17. As a result of this
directionalization of the flow of soap from the ampoule, the
scrubbing surface need not be wetted with water in order to draw
the soap through the sponge and to the surface for use in
scrubbing. Thus, the unit is easier to use in the field because
once the ampoule is broken the unit is immediately ready for use in
cleansing the area around the wound.
Prior to assembly of the unit 10, the cap 19 resembles a
channel-shaped member with the flanges 21 formed at right angles to
web 20 and the shoulders 26 extending inwardly towards each other
as shown in FIGS. 2 and 3. To assemble the unit, the ampoule 14 is
positioned in the slot 15 and the cap is placed over the slot with
the flanges engaging the sides 24 of the sponge, the web engaging
the upper surface 16 and the shoulders 26 pressing in on the sides
of the sponge below the upper surface (see FIG. 3). Thereafter, the
cap is heat-treated along the edges 23 and the flanges are bent
toward each other with the ends 29 of the shoulders eventually
pinching a portion of the sponge against the underside of the web
thereby trapping upper corner portions of sponge in a triangle area
30 (see FIG. 4) between the web and the flanges and against the
underside of the web. This also causes the shoulders to compress
the sponge just above the ampoule to seal closed the slot 15 to
prevent escape of ampoule fragments and to directionalize the flow
of soap when the ampoule is broken.
Once assembled, the unit 10 is ready for use and may be stored
conveniently in the first-aid kit until needed. To use the unit,
the ampoule may be broken easily by pressing against the scrubbing
surface 17 to squeeze the sponge 11 against the web 20 of the cap
19 as shown in FIG. 5. Thus, the cap advantageously serves as a
backing against which the ampoule may be broken between the fingers
to prepare the unit for use.
From the foregoing it will be seen that the present invention
provides a novel scrubbing unit 10 which is more convenient to use
in the field owing to the increased permeability of the sponge
resulting from the novel arrangement of the cap 19. In addition,
the cap serves to prevent fragments of the broken ampoule 14 from
coming out of the sponge and to directionalize the flow of the
liquid soap 13 toward the surface of the sponge so that the sponge
need not be wetted with water before usage.
* * * * *