US4446124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wound dressing comprising silver sulfadiazine incorporated in animal tissue
Assignee: Brennen Medical Inc
•
Filing: 1983-03-31
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Granted: 1984-05-01
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Expires: 2003-03-31
Abstract
Abstract Animal tissue and the like having silver sulfadiazine incorporated therein is useful as a covering for burns and/or wounds. The silver sulfadiazine is incorporated in the tissue by soaking the tissue in an ammoniacal silver sulfadiazine solution or suspension. When the silver sulfadiazine is so incorporated in the tissue via an ammonium solution, more silver is found to be present than would normally be expected and the effectiveness of the thus treated tissue as a wound covering increases.
Inventors
- 👤 Charles L. Fox, Jr.
- 👤 Shanta M. Modak
- 👤 Paul Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:07
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/36; A61L27/3683; A61L27/3687; A61L15/00; A61L15/16; A61L15/42; A61L15/46; A61L27/3604; A61L27/362; A61L27/50; A61L27/60; A61L2300/00; A61L2300/10; A61L2300/102; A61L2300/104; A61L2300/40; A61L2300/404; A61L2300/406; A61L2430/00; A61L2430/40
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
43 words
A method for preparing animal tissues for use as burn or wound dressings which comprise soaking animal tissue in an aqueous solution of ammoniated silver sulfadiazine to incorporate the ammoniated silver sulfadiazine to the animal tissue, and partially drying the thus-treated animal tissue.
Claim 2
Independent Claim
43 words
A method for preparing animal tissues for use as burn or wound dressings which comprise soaking animal tissue in an aqueous solution of ammoniated silver sulfadiazine to incorporate the ammoniated silver sulfadiazine to the animal tissue, and partially drying the thus-treated animal tissue.
Claim 3
Dependent Claim
19 words
A method as described in claim 1, wherein the animal tissue is sprayed with aqueous ammoniated silver sulfadiazine solution.
Claim 4
Dependent Claim
13 words
A method as described in claim 1, wherein the animal tissue is pigskin.
Claim 5
Dependent Claim
14 words
A method as described in claim 1, wherein the animal tissue is amniotic tissue.
Claim 6
Dependent Claim
18 words
A method as described in claim 1, wherein said aqueous solution of ammoniated silver sulfadiazine contains ammonium hydroxide.
Claim 7
Dependent Claim
15 words
The product of the method described in claim 1, wherein silver sulfadiazine has been incorporated.
Claim 8
Dependent Claim
24 words
A method for the treatment of burns and/or wounds, such method comprising the application of the product of claim 1 to wounds and/or burns.
Claim 9
Dependent Claim
17 words
The product of the method of claim 1, wherein said animal tissue is human or cadaver skin.
Claim 10
Dependent Claim
13 words
A method as described in claim 1, wherein said tissue is human skin.
References Cited (Backward Citations)
US3761590A
Cited
US4049802A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-01 | 1987-10-31 | 1988-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-01 | 1991-10-31 | 1992-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-01 | 1995-10-31 | 1996-05-01 | $7700.00 | Window Closed / Lapsed |