EP0107376A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Polyvinylpyrrolidone gel dressings
Assignee: Johnson and Johnson Hospital Services Inc
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Filing: 1983-09-27
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Granted: —
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Expires: 2003-09-27
Abstract
Abstract A tacky, non-rigid, transparent and absorbent dressing is described, comprising a layer of cross-linked polyvinylpyrrolidone gel containing from about 75% to 85% water. The cross-linking is preferably carried out by means of ionizing radiation which simultaneously sterilizes the product and renders it tacky. The dressing preferably has antimicrobial agents absorbed therein.
Inventors
- 👤 Darrell Robert Thompson
- 👤 Hien Vu Nguyen
- 👤 Erle V. Painter
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 11:41
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/46; A61L15/22; A61L15/24; A61L2300/00; A61L2300/10; A61L2300/102; A61L2300/104; A61L2300/40; A61L2300/404; A61L2300/406; A61L2300/416
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
14 words
A tacky, transparent and absorbent dressing, comprising a non-rigid layer of cross-linked polyvinylpyrrolidone gel.
Claim 2
Dependent Claim
14 words
A tacky, transparent and absorbent dressing, comprising a non-rigid layer of cross-linked polyvinylpyrrolidone gel.
Claim 3
Dependent Claim
35 words
A tacky,transparent and absorbent dressing, comprising a non-rigid layer of cross-linked polyvinylpyrrolidone gel, prepared by dissolving between 15°o and 25% by weight of polyvinylpyrrolidone in water and cross-linking the polyvinylpyrrolidone by means of ionizing radiation.
Claim 4
Dependent Claim
35 words
A tacky,transparent and absorbent dressing, comprising a non-rigid layer of cross-linked polyvinylpyrrolidone gel, prepared by dissolving between 15°o and 25% by weight of polyvinylpyrrolidone in water and cross-linking the polyvinylpyrrolidone by means of ionizing radiation.
Claim 5
Dependent Claim
22 words
The dressing of Claim 2, in which a radiation level of between about 1 and 5 Mrads is used to effect cross-linking.
Claim 6
Dependent Claim
21 words
The dressing of any one of Claims 1 to 3 in which the polyvinylpyrrolidone has a molecular weight of over 300,000.
Claim 7
Dependent Claim
21 words
The dressing of any one of Claims 1 to 4 which is reinforced by a gas and vapor permeable reinforcing film.
Claim 8
Dependent Claim
22 words
The dressing of any one of Claims 1 to 5 in which the gel has incorporated therein at least one chemotherapeutic agent.
Claim 9
Dependent Claim
21 words
The dressing of any one of Claims 1 to 6 in which the gel has incorporated therein a physiological saline solution.
Claim 10
Dependent Claim
68 words
The dressing of any one of Claims 1 to 7 in which the tack as measured by the rolling ball test, using a 8.36 gm ball is represented by a ball roll of between 3 inches and 1 inch for a radiation variation of between 5 and 1 Mrads, respectively, in the case of a gel containing 15% by weight of polyvir·tylpyrrolidone; and a ball roll of between
Claim 11
Dependent Claim
28 words
1 inch and zero inches for a radiation variation of between 5 and 1 Mruds, respectively in the case of a gel containing 25% by weight of polyvinylpyrrolidone.
Claim 12
Dependent Claim
28 words
1 inch and zero inches for a radiation variation of between 5 and 1 Mruds, respectively in the case of a gel containing 25% by weight of polyvinylpyrrolidone.
Claim 13
Dependent Claim
36 words
The dressing of any one of Claims 2 to 8 in which the gel contains about 20% by weight of polyvinylpyrrolidonce, said gel having been cross-linked by exposure to a radiation level of about 2.5 Mrads.
Claim 14
Dependent Claim
44 words
A process for preparing a tacky, non-rigid, sterile, transparent gel dressing, which comprises dissolving between 15% and 25% by weight of polyvinylpyrrolidone in water and thereafter cross-linking the polyvinylpyrrolidone by means of ionizing radiation at a radiation level of between 1 and 5 Mrads.
Claim 15
Dependent Claim
44 words
A process for preparing a tacky, non-rigid, sterile, transparent gel dressing, which comprises dissolving between 15% and 25% by weight of polyvinylpyrrolidone in water and thereafter cross-linking the polyvinylpyrrolidone by means of ionizing radiation at a radiation level of between 1 and 5 Mrads.
Claim 16
Dependent Claim
49 words
The process of Claim 10 in which a reticulated polyethylene reinforcing film is placed inside a polyethylene bag which is then filled with the polymer solution prior to the cross-linking step, so as to produce a reinforced gel dressing, covered on each side by a removable polyethylene protective film.
Claim 17
Dependent Claim
24 words
The dressing of any one of Claims 1 to 9 in which the gel has incorporated therein an antibacterially effective amount of silver sulfadiazene.
Claim 18
Dependent Claim
21 words
The dressing of Claim 12 in which the gel has incorporated therein between 0.2% and 1.5% by weight of silver sulfadiazene.
References Cited (Backward Citations)
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