US4668228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Debriding tape
Assignee: Ethicon Inc
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Filing: 1985-03-12
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Granted: 1987-05-26
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Expires: 2005-03-12
Abstract
Abstract Debriding tapes are disclosed which contain a proteolytic enzyme useful for debridement of eschar and necrotic tissue, e.g., subtilisin, bromelain, in dry powdered form on the adhesive mass surface of an occlusive or semi-occlusive surgical adhesive tape.
Inventors
- 👤 Laura L. Bolton
- 👤 Barry E. Constantine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:50
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/38
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
82 words
A debriding tape comprising a surgical adhesive tape comprising an adhesive mass on a non-gel, non-bioerodable, biocompatible, occlusive or semi-occlusive backing, said surgical adhesive tape having a lower moisture vapor transmission rate below 200 grams per 100 square inches per 24 hours, containing on the adhesive mass surface to be applied to a burn or other wound requiring debridement, an effective amount of a debriding enzyme useful for debridement of eschar and necrotic tissue, said debriding enzyme being in dry powdered form.
Claim 2
Dependent Claim
82 words
A debriding tape comprising a surgical adhesive tape comprising an adhesive mass on a non-gel, non-bioerodable, biocompatible, occlusive or semi-occlusive backing, said surgical adhesive tape having a lower moisture vapor transmission rate below 200 grams per 100 square inches per 24 hours, containing on the adhesive mass surface to be applied to a burn or other wound requiring debridement, an effective amount of a debriding enzyme useful for debridement of eschar and necrotic tissue, said debriding enzyme being in dry powdered form.
Claim 3
Dependent Claim
24 words
The debriding tape of claim 1 wherein the debriding enzyme is bromelein or any active fraction of bromelain or subtilisin A or sublitisin B.
Claim 4
Dependent Claim
16 words
The debriding tape of claim 1 wherein the adhesive tape is made from a polyurethane backing.
Claim 5
Dependent Claim
10 words
The debriding tape of claim 1 which has been sterilized.
Claim 6
Dependent Claim
23 words
The debriding tape of claim 1 which also contains an anti-bacterially effective amount of silver sulfadiazine on or in the same adhesive mass.
Claim 7
Dependent Claim
41 words
The debriding tape of claim 1 in which the surgical adhesive tape backing is made from polyurethane which is 1.5 mils thick, the adhesive mass is made from amine containing acrylate polymers, and the debriding enzyme is subtilisin A or B.
Claim 8
Dependent Claim
18 words
The debriding tape of claim 1 in which the surgical adhesive tape is made from a transparent polyurethane.
Claim 9
Dependent Claim
14 words
A sealed package containing the debriding tape of claim 1 which has been sterilized.
Claim 10
Dependent Claim
19 words
The package of claim 8 in which the debriding tape is stable when stored at temperatures below 40° C.
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) | 1990-05-25 | 1990-11-24 | 1991-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-25 | 1994-11-24 | 1995-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-25 | 1998-11-24 | 1999-05-26 | $7700.00 | Window Closed / Lapsed |