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US4750482A
Expired / Lapsed
US
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Hydrophilic, elastomeric, pressure-sensitive adhesive
Assignee: Covidien AG
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Filing: 1985-10-01
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Granted: 1988-06-14
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Expires: 2005-10-01
Abstract
Abstract The present invention concerns a novel water-insoluble, hydrophilic, pressure-sensitive adhesive that has a number of unique characteristics including being elastomeric and ultraconformable. This adhesive includes an irradiation cross-linked synthetic organic polymer having a three-dimensional matrix, and an adhesive plasticizer. The plasticizer includes a substantially non-volatile elasticizer. The adhesive is useful either as a coating on a supporting web-like substrate or as a self-supporting layer. Also provided are various articles made using the adhesive such as a bandage or ostomy device, a method of making the adhesive, and methods of using the adhesive. In one embodiment, the adhesive is electroconductive, and is useful for attaching an electrically conductive member of an electrode to a selected surface such as mammalian tissue. Also provided is an electrode having a layer of this adhesive, and a method of adhering this electrode to mammalian tissue.
Inventors
- 👤 David L. Sieverding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:58
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/0404; A61N1/0408; A61N1/0468; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/58; A61L24/00; A61L24/04; A61L24/06; A61N1/0456; A61N1/0472; A61N1/0492; A61N1/0496; C; C09; C09J; C09J157/00; C09J7/00; C09J7/10; C09J7/20; C09J7/21; C09J7/30; C09J7/38; A61L2400/00; A61L2400/14; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/28; C08L2666/54; C09J2301/00; C09J2301/30; C09J2301/302
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
85 words
A wound or burn dressing comprising a web-like substrate coated with a layer of a crosslinked, water-insoluble, hydrophilic, elastomeric, pressure-sensitive adhesive gel of a gel-forming, water-soluble polymer derived from repeating units predominantly of vinylpyrrolidone, polyethylene glycol having a molecular weight from about 300 to about 20,000 and water, wherein the cross-linked gel is formed by radiation cross-linking of a solution or dispersion of said polymer in said plasticizer and water, and wherein said gel retains said plasticizer within a cross-linked three-dimensional matrix of said polymer.
Claim 2
Dependent Claim
85 words
A wound or burn dressing comprising a web-like substrate coated with a layer of a crosslinked, water-insoluble, hydrophilic, elastomeric, pressure-sensitive adhesive gel of a gel-forming, water-soluble polymer derived from repeating units predominantly of vinylpyrrolidone, polyethylene glycol having a molecular weight from about 300 to about 20,000 and water, wherein the cross-linked gel is formed by radiation cross-linking of a solution or dispersion of said polymer in said plasticizer and water, and wherein said gel retains said plasticizer within a cross-linked three-dimensional matrix of said polymer.
Claim 3
Dependent Claim
28 words
A dressing according to claim 1 wherein said plasticizer is present in an amount by weight ranging from about 0.2 to 4 times the weight of said polymer.
Claim 4
Dependent Claim
12 words
A dressing according to claim 1 wherein said polymer is polyvinyl pyrrolidone.
Claim 5
Dependent Claim
13 words
A dressing according to claim 1 wherein said polymer is K-90 polyvinyl pyrrolidone.
Claim 6
Dependent Claim
20 words
A dressing according to claim 1 wherein said polyethylene glycol has a molecular weight from about 600 to about 20,000.
Claim 7
Dependent Claim
20 words
A dressing according to claim 1 wherein said polyethylene glycol has a molecular weight of about 300 or about 600.
Claim 8
Dependent Claim
19 words
A dressing according to claim 1 wherein said solution or dispersion contains about 12.5-22.5 weight percent of said polymer.
Claim 9
Dependent Claim
19 words
A dressing according to claim 1 wherein said solution or dispersion contains about 20 weight percent of said polymer.
Claim 10
Dependent Claim
46 words
A dressing according to claim 1 wherein said polymer is K-90 polyvinyl pyrrolidone and said plasticizer is polyethylene glycol having a molecular weight of about 300 and being present in an amount by weight that is about 0.75-1.5 times the amount by weight of said polymer.
Claim 11
Dependent Claim
17 words
A dressing according to claim 1 wherein said gel in addition contains a phosphate-buffered physiological saline solution.
Claim 12
Dependent Claim
14 words
A dressing according to claim 1 wherein said gel contains a pharmacologically active agent.
Claim 13
Dependent Claim
15 words
A dressing according to claim 1 wherein said dressing is a medical or athletic tape.
References Cited (Backward Citations)
US3264202A
Cited
US3470078A
Cited
US3357930A
Cited
US3419006A
Cited
US3783872A
Cited
US3664343A
Cited
US3898143A
Cited
US3933587A
Cited
US3957605A
Cited
US3993553A
Cited
US3993552A
Cited
US3993551A
Cited
US4089832A
Cited
US3901236A
Cited
US4094822A
Cited
US4226247A
Cited
WO1980001138A1
Cited
US4554924A
Cited
US4474570A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-14 | 1991-12-14 | 1992-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-14 | 1995-12-14 | 1996-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-14 | 1999-12-14 | 2000-06-14 | $7700.00 | Window Closed / Lapsed |