Patent US4460369A successfully refreshed from Google Patents.
US4460369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive-coated sheet material incorporating anti-bacterial substances
Assignee: Smith and Nephew Research Ltd
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Filing: 1981-12-21
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Granted: 1984-07-17
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Expires: 2001-12-21
Abstract
Abstract Adhesive-coated liquid-impervious moisture-vapour-permeable thin polymer sheet suitable as a wound covering has an antibacterial, preferably a solid such as silver sulphadiazine, disseminated throughout the adhesive layer, usually in amounts up to 15 wt. %, to provide uniform antibacterial properties over the wound and surrounding skin areas.
Inventors
- 👤 Donald E. Seymour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:24
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/58; A61L15/44; A61L2300/00; A61L2300/10; A61L2300/102; A61L2300/104; A61L2300/40; A61L2300/404; A61L2300/60; A61L2300/62; A61L2300/622
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
120 words
An adhesive bacteria-proof wound dressing which in use consists essentially of a polyurethane sheet material which is 40 microns or less in thickness which has upon one surface a continuous layer of adhesive comprising a polyvinyl ether adhesive or an acrylic adhesive up to 75 microns in thickness which adhesive has incorporated in it in uniform known amount per unit area a solid antibacterial material in a finely divided form in an amount of from 1 to 25% by weight based on the weight of the adhesive so that the dressing is liquid impervious but has high moisture vapour permeability and releases the antibacterial material in an amount sufficient to kill bacteria in the wound and surrounding covered skin area.
Claim 2
Dependent Claim
120 words
An adhesive bacteria-proof wound dressing which in use consists essentially of a polyurethane sheet material which is 40 microns or less in thickness which has upon one surface a continuous layer of adhesive comprising a polyvinyl ether adhesive or an acrylic adhesive up to 75 microns in thickness which adhesive has incorporated in it in uniform known amount per unit area a solid antibacterial material in a finely divided form in an amount of from 1 to 25% by weight based on the weight of the adhesive so that the dressing is liquid impervious but has high moisture vapour permeability and releases the antibacterial material in an amount sufficient to kill bacteria in the wound and surrounding covered skin area.
Claim 3
Dependent Claim
17 words
An adhesive dressing according to claim 1 wherein the antibacterial material is chlorhexidine or a salt thereof.
Claim 4
Dependent Claim
14 words
An adhesive dressing according to claim 1 wherein the antibacterial material is an iodophor.
Claim 5
Dependent Claim
13 words
An adhesive dressing according to claim 3 wherein the iodophor is providone iodine.
Claim 6
Dependent Claim
16 words
An adhesive dressing according to claim 1 wherein the antibacterial material is a quaternary ammonium compound.
Claim 7
Dependent Claim
27 words
An adhesive dressing according to claim 1 wherein the amount of solid antibacterial material is from 5 to 10% by weight based on the weight of adhesive.
Claim 8
Dependent Claim
27 words
An adhesive dressing according to claim 1 wherein the solid antibacterial material is particulate and the majority of the particles are less than five microns in diameter.
Claim 9
Dependent Claim
21 words
An adhesive dressing according to claim 1 wherein the adhesive layer is an acrylic adhesive up to 40 microns in thickness.
Claim 10
Dependent Claim
21 words
An adhesive dressing according to claim 8 wherein the adhesive layer is an acrylic adhesive up to 30 microns in thickness.
Claim 11
Dependent Claim
22 words
An adhesive dressing according to claim 1 wherein the adhesive layer is a polyvinyl ether adhesive up to 40 microns in thickness.
Claim 12
Dependent Claim
22 words
An adhesive dressing according to claim 10 wherein the adhesive layer is a polyvinyl ether adhesive up to 30 microns in thickness.
Claim 13
Dependent Claim
28 words
An adhesive dressing according to claim 1 wherein the polyurethane sheet and the adhesive layer comprising a polyvinyl ether adhesive are both up to 30 microns in thickness.
Claim 14
Dependent Claim
27 words
An adhesive dressing according to claim 1 wherein the polyurethane sheet and the adhesive layer comprising an acrylic adhesive are both up to 30 microns in thickness.
Claim 15
Dependent Claim
24 words
An adhesive dressing according to claim 1 which additionally comprises a peelable release layer on the adhesive face, to be removed prior to use.
Claim 16
Dependent Claim
120 words
An adhesive bacteria-proof incise drape which in use consists essentially of a polyurethane sheet material which is 40 microns or less in thickness which has upon one surface a continuous layer of adhesive comprising a polyvinyl ether adhesive or an acrylic adhesive up to 75 microns in thickness which adhesive has incorporated in it in uniform known amount per unit area a solid antibacterial material in a finely divided form in an amount of from 1 to 25% by weight based on the weight of the adhesive so that the dressing is liquid impervious but has high moisture vapour permeability and releases the antibacterial material in an amount sufficient to kill bacteria in the wound and surrounding covered skin area.
Claim 17
Dependent Claim
120 words
An adhesive bacteria-proof incise drape which in use consists essentially of a polyurethane sheet material which is 40 microns or less in thickness which has upon one surface a continuous layer of adhesive comprising a polyvinyl ether adhesive or an acrylic adhesive up to 75 microns in thickness which adhesive has incorporated in it in uniform known amount per unit area a solid antibacterial material in a finely divided form in an amount of from 1 to 25% by weight based on the weight of the adhesive so that the dressing is liquid impervious but has high moisture vapour permeability and releases the antibacterial material in an amount sufficient to kill bacteria in the wound and surrounding covered skin area.
Claim 18
Dependent Claim
18 words
An adhesive incise drape according to claim 15 wherein the antibacterial material is chlorhexidine or a salt thereof.
Claim 19
Dependent Claim
15 words
An adhesive incise drape according to claim 15 wherein the antibacterial material is an iodophor.
Claim 20
Dependent Claim
14 words
An adhesive incise drape according to claim 17 wherein the iodophor is povidine iodine.
Claim 21
Dependent Claim
17 words
An adhesive incise drape according to claim 15 wherein the antibacterial material is a quaternary ammonium compound.
Claim 22
Dependent Claim
28 words
An adhesive incise drape according to claim 15 wherein the amount of solid antibacterial material is from 5 to 10% by weight based on the weight of adhesive.
Claim 23
Dependent Claim
28 words
An adhesive incise drape according to claim 15 wherein the solid antibacterial material is particulate and the majority of the particles are less than five microns in diameter.
Claim 24
Dependent Claim
22 words
An adhesive incise drape according to claim 15 wherein the adhesive layer is an acrylic adhesive up to 40 microns in thickness.
Claim 25
Dependent Claim
22 words
An adhesive incise drape according to claim 22 wherein the adhesive layer is an acrylate adhesive up to 30 microns in thickness.
Claim 26
Dependent Claim
23 words
An adhesive incise drape according to claim 15 wherein the adhesive layer is a polyvinyl ether adhesive up to 40 microns in thickness.
Claim 27
Dependent Claim
23 words
An adhesive incise drape according to claim 24 wherein the adhesive layer is a polyvinyl ether adhesive up to 30 microns in thickness.
Claim 28
Dependent Claim
29 words
An adhesive incise drape according to claim 15 wherein the polyurethane sheet and the adhesive layer comprising a polyvinyl ether adhesive are both up to 30 microns in thickness.
Claim 29
Dependent Claim
28 words
An adhesive incise drape according to claim 15 wherein the polyurethane sheet and the adhesive layer comprising a polyacrylate adhesive are both up to 30 microns in thickness.
Claim 30
Dependent Claim
25 words
An adhesive incise drape according to claim 15 which additionally comprises a peelable release layer on the adhesive face, to be removed prior to use.
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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) | 1987-07-17 | 1988-01-16 | 1988-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-17 | 1992-01-16 | 1992-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-17 | 1996-01-16 | 1996-07-17 | $7700.00 | Window Closed / Lapsed |