Patent US2257177A successfully refreshed from Google Patents.
US5300306A
Expired / Lapsed
US
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Tissue-equivalent membrane from bovine esophageal tissue
Assignee: Individual
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Filing: 1992-09-29
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Granted: 1994-04-05
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Expires: 2012-09-29
Abstract
Abstract A ready to use heterograft membrane for replacement of injured skin which is prepared by extraction of a mucous membrane from an esophagus of bovine origin. The tissue-equivalent membrane resulting from this process is applied on burns, cuts or wounds to protect the affected area and generally provide an optimum condition for the proliferation of epidermal cells. The membrane has an affinity with tissue cells and integrates to the living tissue. Afterwards, it falls off, leaving the wound area prepared for homografting, or when the epidermis has completely regenerated.
Inventors
- 👤 Carlos A. Alvarado
- 👤 Cesar A. Letona
- 👤 Arturo A. Perez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:43
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/40; A61L27/00; A61L27/36; A61L27/3604; A61L27/50; A61L27/60
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
69 words
A method of treating a skin wound with a sterile bovine esophageal tissue dressing comprising: treating a surface area encompassing said skin wound with an antiseptic to produce a cleansed graft zone; cutting the sterile bovine esophageal tissue into a planar shape having a size substantially corresponding with said cleansed graft zone; and layering said sterile bovine tissue dressing onto said cleansed zone area to produce a dressed zone.
Claim 2
Independent Claim
69 words
A method of treating a skin wound with a sterile bovine esophageal tissue dressing comprising: treating a surface area encompassing said skin wound with an antiseptic to produce a cleansed graft zone; cutting the sterile bovine esophageal tissue into a planar shape having a size substantially corresponding with said cleansed graft zone; and layering said sterile bovine tissue dressing onto said cleansed zone area to produce a dressed zone.
Claim 3
Dependent Claim
40 words
The method according to claim 1 wherein the sterile bovine esophageal tissue dressing is produced by: manually separating a mucous membrane layer from esophageal tissue of bovine origin; and aseptically rinsing the mucous membrane layer with an antiseptic rinsing solution.
Claim 4
Dependent Claim
16 words
The method according to claim 1 which further comprises overlaying said dressed zone with a bandage.
Claim 5
Dependent Claim
13 words
The method according to claim 1 wherein the skin wound is a burn.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-04-04 | 1997-10-04 | 1998-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-04-04 | 2001-10-04 | 2002-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-04-04 | 2005-10-04 | 2006-04-05 | $7700.00 | Window Closed / Lapsed |