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Publication numberUS2750944 A
Publication typeGrant
Publication dateJun 19, 1956
Filing dateSep 27, 1954
Priority dateSep 27, 1954
Publication numberUS 2750944 A, US 2750944A, US-A-2750944, US2750944 A, US2750944A
InventorsTollstrup Duane H
Original AssigneeTollstrup Duane H
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Absorbent bandage
US 2750944 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

United States Patent 6 ABSORBENT BANDAGE Duane H. Tollstrup, North Hollywood, Calif.

No Drawing. Application September 27, 1954, Serial No. 458,660

4 Claims. (Cl. 128-490) This invention relates to a composition of matter and more particularly to an absorbent bandage having a high absorbent quality with a minimum of bulk.

The principal object of this invention is to produce a sterilized composition particularly useful as antiseptic surgical bandages, dressings, compresses and is especially useful as a catamenial device of either the external or insertion type.

It is a further object of this invention to produce a bandage of the type described characterized by its simplicity, economy, efliciency and absence of excessive bulk.

The invention is characterized by the use of swelling bentonite, otherwise known as montmorillonite.

Various clays having substantially the same physical and chemical analysis are known as bentonites having various abilities to absorb water. When the term bentonite" is used herein, there is meant a swelling bentonite, and to obtain the advantages of the present invention in order to be characterized as a swelling bentonite, such bentonite in its dry powdered form should be capable of absorbing at least eight times its weight in water. The present invention utilizes this absorbent quality of bentonite or montmorillonite by combining the same with vegetable fibers, preferably cotton, to provide a bandage which can be sterilized and cut or shaped in any desired form.

A dry cubic inch or" swelling bentonite when subjected to water forms a stable jell in which there is estimated to be more than 9 /2 billion individual flakes having a com bined surface area of more than 1 acre in extent. Each tiny flake is avid for liquid and surrounds itself with a semi-rigid sheath or hull of liquid many times thicker than the particle itself. This invention utilizes this property in conjunction with the well-known absorptive quali ties of vegetable fiber to provide an absorbent bandage having increased absorptive advantages and decreased bulk.

" ice It has been discovered that by combining small amounts of hentonite with cotton or other fibrous material, a composition is formed which is 100% more absorptive than fibrous material used alone. It has also been proven that this composition will have the same absorptive quality with one-half the bulk of using fibrous material alone.

An optimum composition will consist of vegetable fibers and 35% bentonite. However, the invention is not limited to this ratio or even approximately this ratio as it has been shown that the vegetable fiber may vary from 50% to of the composition with the bentonite varying from 5% to 50%.

Any desirable method of combining the bentonite with the fibrous material may be used. One method found satisfactory is to shread the fibrous material and powder the bentouite dispersing each equally and evenly through the composition. Probably the most satisfactory and easily constructed combination is ellected by alternating a layer of fibrous material such as a thin layer of cotton with a layer of powdered bentonite and repeating this process until a bandage of the desired thickness and absorptive quality has been attained. Such bandage may then be sterilized and cut or rolled into any shape or size for convenient use. Particularly a composition formed of such alternate layers as above described may be cut or shaped to form a very efficient catamenial device.

While there has been described what is at present considered preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various changes and modifications can be made therein without departing from the essence of the invention and it is intended to cover herein all such changes and modifications as come within the true spirit and scope of the appended claims.

I claim:

1. An absorbent bandage comprising from 50% to 95% cotton fibers and from 5% to 50% bentonite.

2. An absorbent bandage comprising from 50% to 95% cotton fibers and from 5% to 50% montmoriilom'te.

3. A catarnenial device comprising a roll of alternate layers of cotton and dry powdered bentonite.

4. A catamenial bandage comprising from 50% to 95% cotton fibers and from 5% to 50% dry powdered bentonite.

References Cited in the file of this patent UNlTED STATES PATENTS 2,331,271 Gilchrist Oct. 5, i943

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2331271 *Jul 9, 1938Oct 5, 1943John E GilchristCatamenial bandage
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3670731 *May 20, 1966Jun 20, 1972Johnson & JohnsonAbsorbent product containing a hydrocolloidal composition
US3932322 *Mar 7, 1975Jan 13, 1976Kimberly-Clark CorporationWater absorbing starch-acrylonitrile graft copolymers fumed silica or alumina modified to improve rate of absorption for physiological fluids
US3935363 *Sep 16, 1974Jan 27, 1976The Dow Chemical CompanyAbsorbent product containing flocculated clay mineral aggregates
US4610678 *Sep 6, 1983Sep 9, 1986Weisman Paul THigh-density absorbent structures
US4748978 *Sep 27, 1985Jun 7, 1988Kamp Herman FTherapeutic dressing having mineral components
US4994037 *Jul 9, 1990Feb 19, 1991Kimberly-Clark CorporationAbsorbent structure designed for absorbing body fluids
US5009650 *Aug 6, 1987Apr 23, 1991Kimberly-Clark CorporationAbsorbent structure designed for absorbing body fluids
US5176668 *Sep 19, 1989Jan 5, 1993Kimberly-Clark CorporationAbsorbent structure designed for absorbing body fluids
US5489469 *May 28, 1993Feb 6, 1996Kao CorporationAbsorbent composite
US6051749 *Oct 23, 1997Apr 18, 2000Enviroderm Pharmaceuticals Inc.Fabric or garment containing fecal enzyme inhibitor
EP0278601A2 *Jan 19, 1988Aug 17, 1988Kao CorporationAbsorbent composite
WO1981001643A1 *Dec 9, 1980Jun 25, 1981Molecular Sieve Systems IncDiaper
U.S. Classification604/368, 604/377
International ClassificationA61L15/16, A61L15/18
Cooperative ClassificationA61L15/18
European ClassificationA61L15/18