US5196185A
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US
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Collagen-based wound dressing and method for applying same
Assignee: Micro-Collagen Pharmaceutics Ltd
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Filing: 1989-09-11
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Granted: 1993-03-23
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Expires: 2009-09-11
Abstract
Abstract There is disclosed a collagen preparation formed from a collagen selected from the group consisting of Type I collagen, Type III collagen and mixtures thereof into a particulate collagen of a particle size of from about 1 to 50 μm, preferably 5 to 25 μm into a delivery system, such as an aerosol, and thus in sprayable form as a wound dressing alone, or with releasing drugs or other active agents. The particulate collagen comprises up to about 20% by weight of the resulting delivery system.
Inventors
- 👤 Fred Silver
- 👤 Vinay Sharma
- 👤 Dieter R. Berndt
- 👤 Louis E. Marn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:08
CPC Classifications
A; A61; A61K; A61K47/00; A61K47/30; A61K47/42; A61K9/00; A61K9/70; A61K9/7015; A61L; A61L24/00; A61L24/04; A61L24/10; A61L24/102; A61L26/00; A61L26/0009; A61L26/0028; A61L26/0033; A61L26/0052; A61L26/0061; A61L26/0066; A61L26/0076; A61P; A61P17/00; A61P43/00; A61L2300/00; A61L2300/40; A61L2300/404; A61L2300/41; A61L2300/412; A61L2300/414; A61L2300/60; A61L2300/62; A61L2300/622
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
32 words
A method of wound treatment, which comprises: applying to such a wound particulate collagen in a carrier, said particulate collagen being of a particle size of from about 1 to 50 μm.
Claim 2
Independent Claim
32 words
A method of wound treatment, which comprises: applying to such a wound particulate collagen in a carrier, said particulate collagen being of a particle size of from about 1 to 50 μm.
Claim 3
Dependent Claim
30 words
The method of wound treatment as defined in claim 1 wherein said carrier is selected from the group consisting of an ointment, gel, gel cream, cream, aerosol and occlusive film.
Claim 4
Dependent Claim
16 words
The method of wound treatment as defined in claim 1 wherein said carrier is an aerosol.
Claim 5
Dependent Claim
40 words
The method of wound treatment as defined in claim 1 or 2 and further including a macromolecular material selected from the group consisting of hyaluronic acid, fibronectin, particulate collagen Type IV, particulate collagen Type V, laminin, protoglycans and mixtures thereof.
Claim 6
Dependent Claim
51 words
The method of wound treatment as defined in claim 1 or 2 and further including a pharmacologically active agent selected from the group consisting of platelet-derived growth factors, epidermal growth factors, transforming growth factor beta, angeogenesis factor, antibiotics, antifungal agents, spermicidal agents, hormone enzymes, enzyme inhibitors, antihistamines, analgesics and anti-inflammatory agents.
Claim 7
Dependent Claim
24 words
A wound dressing, which comprises: collagen in a carrier, said particulate collagen being of a particle size of from about 1 to 50 μm.
Claim 8
Dependent Claim
24 words
A wound dressing, which comprises: collagen in a carrier, said particulate collagen being of a particle size of from about 1 to 50 μm.
Claim 9
Dependent Claim
25 words
The wound dressing as defined in claim 6 and further including a macromolecular material in an amount of from 0.01 to 10.0% by volume thereof.
Claim 10
Dependent Claim
35 words
The wound dressing as defined in claim 7 wherein said macromolecular material is selected from the group consisting of hyaluronic acid, fibronectin, particulate collagen Type IV, particulate collagen Type V, laminin, protoglycans and mixtures thereof.
Claim 11
Dependent Claim
15 words
The wound dressing as defined in claim 6 and further including a pharmacologically active agent.
Claim 12
Dependent Claim
42 words
The wound dressing as defined in claim 9 wherein said pharmacologically active agent is selected from the group consisting of platelet-derived growth factors, epidermal growth factors, transforming growth factor beta, angeogenesis factor, antibiotics, antifungal agents, spermicidal agents, hormones, enzymes and enzyme inhibitors.
Claim 13
Dependent Claim
17 words
The wound dressing as defined in claim 7 or 8 and further including a pharmacologically active agent.
Claim 14
Dependent Claim
41 words
The wound dressing as defined in claim 11 wherein said pharmacologically active agent is selected from the group consisting of platelet-derived growth factors, epidermal factors, transforming growth factor beta, aneogenesis factor, antibiotics, antifungal agents, spermicidal agents, hormones, enzymes and enzyme inhibitors.
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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) | 1996-03-22 | 1996-09-21 | 1997-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-03-22 | 2000-09-21 | 2001-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-03-22 | 2004-09-21 | 2005-03-23 | $7700.00 | Window Closed / Lapsed |