US4226232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wound dressing
Assignee: Kimberly Clark Worldwide Inc
•
Filing: 1979-04-09
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Granted: 1980-10-07
•
Expires: 1999-04-09
Abstract
Abstract Wound dressings having a water absorbent graft copolymer and water mixture are provided for direct application to the wound. The dressings may also be packaged in porous bags which may be directly applied to the wound. Additional components in the wound dressing may include local anesthetics, hormonal compounds, enzymes, antibacterial agents, antifungal agents or silicone compounds.
Inventors
- 👤 Wayman R. Spence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:42
CPC Classifications
A; A61; A61L; A61L26/00; A61L26/0061; A61L26/0066; A61L15/00; A61L15/16; A61L15/22; A61L15/24; A61L15/42; A61L15/44; A61L26/0009; A61L26/0014; A61L2300/00; A61L2300/20; A61L2300/252; A61L2300/254; A61L2300/40; A61L2300/402; A61L2300/404; A61L2300/43
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
24 words
A method for treating a secreting skin wound comprising applying to the wound a gel mixture comprising a water absorbent graft copolymer and water.
Claim 2
Independent Claim
24 words
A method for treating a secreting skin wound comprising applying to the wound a gel mixture comprising a water absorbent graft copolymer and water.
Claim 3
Dependent Claim
17 words
The method as recited in claim 1 wherein said graft copolymer is a hydrolyzed starch-polyacrylonitrile graft copolymer.
Claim 4
Dependent Claim
20 words
The method as recited in claim 2 wherein said copolymer has a molecular weight from about 50,000 to about 500,000.
Claim 5
Dependent Claim
31 words
For the method as recited in claims 1, 2 or 3 wherein said mixture contains water in an amount from about 10% to about 50% of the graft copolymer's water absorbency.
Claim 6
Dependent Claim
36 words
The method as recited in claim 1, 2 or 3 further comprising packaging said mixture in a sealed pouch prior to application, said pouch being porous for allowing mass transfer between said wound and said mixture.
Claim 7
Independent Claim
47 words
A method for treating a secreting skin wound comprising applying in intimate contact with the wound a gel mixture comprising a water absorbent graft copolymer and water wherein water is present in an amount of from about 10% to about 50% of the graft copolymer's water absorbency.
Claim 8
Independent Claim
47 words
A method for treating a secreting skin wound comprising applying in intimate contact with the wound a gel mixture comprising a water absorbent graft copolymer and water wherein water is present in an amount of from about 10% to about 50% of the graft copolymer's water absorbency.
Claim 9
Dependent Claim
30 words
A gel wound dressing comprising: (a) a water absorbent hydrolyzed starch-polyacrylonitrile graft copolymer; (b) water in an amount from about 10% to about 50% of the graft copolymer's water absorbency.
Claim 10
Dependent Claim
30 words
A gel wound dressing comprising: (a) a water absorbent hydrolyzed starch-polyacrylonitrile graft copolymer; (b) water in an amount from about 10% to about 50% of the graft copolymer's water absorbency.
Claim 11
Dependent Claim
23 words
The wound dressing as recited in claim 7 wherein said graft copolymer has a molecular weight of from about 50,000 to about 500,000.
Claim 12
Dependent Claim
17 words
The wound dressing as recited in claim 7 wherein said copolymer is synthesized with unmodified corn starch.
Claim 13
Dependent Claim
27 words
The wound dressing as recited in claim 7 wherein water is present in an amount from about 20% to about 40% of the graft copolymer's water absorbency.
Claim 14
Dependent Claim
19 words
The wound dressing as recited in claim 7 further comprising an effective therapeutic amount of a physiologically active component.
Claim 15
Dependent Claim
16 words
The wound dressing as recited in claim 11 wherein said physiologically active component is an enzyme.
Claim 16
Dependent Claim
17 words
The wound dressing as recited in claim 11 wherein said physiologically active component is an antibacterial agent.
Claim 17
Dependent Claim
17 words
The wound dressing as recited in claim 11 wherein said physiologically active component is an antifungal agent.
Claim 18
Dependent Claim
17 words
The wound dressing as recited in claim 11 wherein said physiologically active component is a local anesthetic.
Claim 19
Dependent Claim
17 words
The wound dressing as recited in claim 11 wherein said physiologically active component is a hormonal compound.
Claim 20
Dependent Claim
13 words
The wound dressing as recited in claim 7 further comprising a silicone compound.
Claim 21
Dependent Claim
39 words
The wound dressing as recited in claims 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 or 17 wherein said dressing is enclosed within a porous bag, said bag constructed of material which is nontoxic and water permeable.
Claim 22
Dependent Claim
39 words
A bandage for direct application to a skin wound comprising: (a) a gel mixture comprising a water absorbent graft copolymer and water; and (b) a bag containing said mixture, which bag is nontoxic, porous and water and blood permeable.
Claim 23
Dependent Claim
39 words
A bandage for direct application to a skin wound comprising: (a) a gel mixture comprising a water absorbent graft copolymer and water; and (b) a bag containing said mixture, which bag is nontoxic, porous and water and blood permeable.
Claim 24
Dependent Claim
14 words
The bandage as recited in claim 19 wherein said bag comprises long fiber paper.
Claim 25
Dependent Claim
28 words
The bandage as recited in claim 19 wherein said mixture contains water in an amount of from about 10% to about 50% of the graft copolymer's water absorbency.
Claim 26
Dependent Claim
24 words
The bandage as recited in claim 19 wherein said bag comprises a fiber spun from a solution of copolymerized vinyl chloride and vinyl acetate.
Claim 27
Dependent Claim
23 words
The bandage as recited in claim 22 wherein the material of said bag has a porous permeability of about 230 cfm/ft 2 .
Claim 28
Dependent Claim
21 words
The bandage as recited in claims 19, 20, 21, 22 or 23 wherein said bandage is packaged in an airtight bag.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-07 | 1984-04-07 | 1984-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-07 | 1988-04-07 | 1988-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-07 | 1992-04-07 | 1992-10-07 | $7700.00 | Window Closed / Lapsed |