Patent US2366943A successfully refreshed from Google Patents.
Patent US5676967A successfully refreshed from Google Patents.
US5676967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mesh matrix wound dressing
Assignee: STELLEN MEDICAL LLC
•
Filing: 1995-04-18
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Granted: 1997-10-14
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Expires: 2015-04-18
Abstract
Abstract A wound dressing for covering a wound to the body, providing slow release of a combination of collagenic protein and oligosaccharide, enhancing vapor transmission from the wound, and enhancing healing comprises an aqueous combination of collagen and oligosaccharide coated on a mesh surface and dehydrated to a low moisture content. The ratio of oligosaccharide to collagenic protein ranges from 1:100 to 100:1, with a content (dry basis) of collagen at about 0.1 to 30 percent and oligosaccharide in the dressing at about 0.1 to 20 percent.
Inventors
- 👤 Jeffrey M. Williams
- 👤 Timothy P. Lawin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:48
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/22; A61L15/225; A61L15/26
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
37 words
A wound dressing comprising: a polyester mesh netting; a coating on said polyester mesh netting comprising a mixture of beta-D-glucan and a collagen; and a polymeric film bonded to one side of said coated polyester mesh netting.
Claim 2
Dependent Claim
37 words
A wound dressing comprising: a polyester mesh netting; a coating on said polyester mesh netting comprising a mixture of beta-D-glucan and a collagen; and a polymeric film bonded to one side of said coated polyester mesh netting.
Claim 3
Dependent Claim
33 words
The wound dressing of claim 1, wherein said beta-D-glucan is extracted from oats and applied to said mesh netting to produce a concentration equal to about 0.1-5 percent of the dressing dry weight.
Claim 4
Dependent Claim
30 words
The wound dressing of claim 1, wherein said collagen comprises a mixture of Type I and Type III collagens, said collagen mixture comprising 0.1-20 percent (dry weight) of the dressing.
Claim 5
Dependent Claim
16 words
The wound dressing of claim 1, wherein said polymeric film comprises a high vapor permeable material.
Claim 6
Dependent Claim
18 words
The wound dressing of claim 1, wherein said polymeric film comprises a stabilized butylene/poly (alkylene ether) phthalate material.
Claim 7
Dependent Claim
14 words
The wound dressing of claim 1, wherein said collagen comprises a bovine hide extract.
Claim 8
Dependent Claim
31 words
The wound dressing of claim 1, wherein said dressing comprises: ______________________________________
Component Percent, dry basis
______________________________________
Beta-D-glucan 0.1-15
Collagen, bovine 0.1-20
Stabilized butylene/poly(alkylene
12-36
ether)phthalate film
Polyester mesh netting
30-85.
______________________________________
Claim 9
Dependent Claim
35 words
A wound dressing, comprising: ______________________________________
Compound Percent, dry basis
______________________________________
Beta-D-glucan 5-10
Collagen, bovine 5-20
Stabilized butylene/poly(alkylene
ether)phthalate film 24-36
Polyester mesh netting, about 0.02 inch
45-65.
diameter filaments, about 1/32
inch opening size
______________________________________
Claim 10
Dependent Claim
35 words
A wound dressing, comprising: ______________________________________
Compound Percent, dry basis
______________________________________
Beta-D-glucan 5-10
Collagen, bovine 5-20
Stabilized butylene/poly(alkylene
ether)phthalate film 24-36
Polyester mesh netting, about 0.02 inch
45-65.
diameter filaments, about 1/32
inch opening size
______________________________________
Claim 11
Dependent Claim
15 words
The wound dressing of claim 1, wherein said beta-D-glucan is extracted from a cereal grain.
Claim 12
Dependent Claim
21 words
The wound dressing of claim 1, wherein said polymeric film has a thickness of about 0.001 inch +/- about 0.0005 inch.
Claim 13
Dependent Claim
28 words
The wound dressing of claim 4, wherein said polymeric film comprises a stabilized butylene/poly(alkylene ether) phthalate material sold by E. I. Dupont de Nemours under the trademark Hytrel.
Claim 14
Dependent Claim
34 words
The wound dressing of claim 4, wherein said polymeric film comprises a stabilized butylene/poly(alkylene ether) phthalate material sold by E. I. Dupont de Nemours as one of Hytrel Grade HTR8181 and Hytrel Grade HTR8206.
Claim 15
Dependent Claim
66 words
A wound dressing comprising: a polyester mesh netting formed of woven multifilament polyester; a deposit on said mesh netting filaments comprising a mixture of a cereal-derived beta-D-glucan and a collagen in a ratio of 1:100 to 100:1 (dry basis); and a polymeric film of high vapor permeable material bonded to one side of the coated mesh netting to comprise an exterior surface of said wound dressing.
Claim 16
Dependent Claim
66 words
A wound dressing comprising: a polyester mesh netting formed of woven multifilament polyester; a deposit on said mesh netting filaments comprising a mixture of a cereal-derived beta-D-glucan and a collagen in a ratio of 1:100 to 100:1 (dry basis); and a polymeric film of high vapor permeable material bonded to one side of the coated mesh netting to comprise an exterior surface of said wound dressing.
Claim 17
Dependent Claim
17 words
The wound dressing of claim 13, wherein said polymeric film comprises a stabilized butylene/poly(alkylene ether) phthalate material.
Claim 18
Dependent Claim
19 words
The wound dressing of claim 13, wherein said polymeric film is occlusive of bacteria and substantially impermeable to moisture.
Claim 19
Independent Claim
105 words
A method for preparing a wound dressing, comprising: forming a laminar mesh netting of a filamentous plastic material, said netting having interstitial spaces for receiving and retaining a gel; attaching one side of said laminar mesh netting to a film generally occlusive to bacteria and liquid water and generally permeable to gases; preparing a liquid aqueous mixture of collagen and cereal-derived beta-D-glucan; applying said liquid aqueous mixture to said laminar mesh netting to fill said interstitial spaces; and drying said applied mixture to form a continuous gel of collagen and beta-D-glucan in a mesh matrix having an occlusive backing film, for application to a wound.
Claim 20
Independent Claim
105 words
A method for preparing a wound dressing, comprising: forming a laminar mesh netting of a filamentous plastic material, said netting having interstitial spaces for receiving and retaining a gel; attaching one side of said laminar mesh netting to a film generally occlusive to bacteria and liquid water and generally permeable to gases; preparing a liquid aqueous mixture of collagen and cereal-derived beta-D-glucan; applying said liquid aqueous mixture to said laminar mesh netting to fill said interstitial spaces; and drying said applied mixture to form a continuous gel of collagen and beta-D-glucan in a mesh matrix having an occlusive backing film, for application to a wound.
Claim 21
Dependent Claim
16 words
The wound dressing of claim 13, wherein said netting has a thickness of about 0.01-0.05 inches.
Claim 22
Dependent Claim
31 words
The wound dressing of claim 1, wherein said mesh netting is a woven, multifilament material having openings forming interstices in which the mixture of beta-D-glucan and collagen is substantially, uniformly deposited.
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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) | 2000-10-13 | 2001-04-14 | 2001-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-10-13 | 2005-04-14 | 2005-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-10-13 | 2009-04-14 | 2009-10-14 | $7700.00 | Window Closed / Lapsed |