US3969498A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dressing and method for treating a wound
Assignee: University of the Pacific
•
Filing: 1973-09-13
•
Granted: 1976-07-13
•
Expires: 1993-09-13
Abstract
Abstract A wound dressing of the type having a water soluble plasma soluble self-supporting flexible body and which may be aerated and foamed. The flexible body is self-adhering to the wound tissues and forms an artificial eschar with the moist elements at the situs of the wound. The flexible body is formed primarily from a water soluble dextran polymer.
Inventors
- 👤 Patrick N. Catania
- 👤 James C. King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:36
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/22; A61L15/28; Y; Y10; Y10S; Y10S424/00; Y10S424/13
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
70 words
In a wound dressing of the type having a water soluble solid, self-supporting flexible body consisting essentially of a film-forming polymer in integral non-discrete form in an amount sufficient to form an artificial eschar with the moist elements at the situs of the wound, the improvement in which said film-forming polymer is a plasma and water soluble dextran polymer having an average molecular weight of about 40,000 to about 100,000.
Claim 2
Dependent Claim
70 words
In a wound dressing of the type having a water soluble solid, self-supporting flexible body consisting essentially of a film-forming polymer in integral non-discrete form in an amount sufficient to form an artificial eschar with the moist elements at the situs of the wound, the improvement in which said film-forming polymer is a plasma and water soluble dextran polymer having an average molecular weight of about 40,000 to about 100,000.
Claim 3
Dependent Claim
13 words
The improvement in accordance with claim 1 wherein said dextran body is porous.
Claim 4
Dependent Claim
20 words
The improvement in accordance with claim 1 wherein said dextran polymer is about 60-90% by weight of said flexible body.
Claim 5
Dependent Claim
18 words
The improvement in accordance with claim 1 wherein said flexible body contains about 5-15% by weight of water.
Claim 6
Dependent Claim
25 words
The improvement in accordance with claim 1, wherein said flexible body contains medicaments preselected to treat the wound to be covered by said flexible body.
Claim 7
Dependent Claim
19 words
The improvement in accordance with claim 1 wherein said flexible body is in the form of an aerated foam.
References Cited (Backward Citations)
US2338416A
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US2855925A
Cited
US2876165A
Cited
GB814001A
Cited
GB832799A
Cited
US3006814A
Cited
US3122479A
Cited
US3238100A
Cited
US3328259A
Cited
US3577516A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-13 | 1980-01-12 | 1980-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-13 | 1984-01-12 | 1984-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-13 | 1988-01-12 | 1988-07-13 | $7700.00 | Window Closed / Lapsed |