Patent EP0123465A2 successfully refreshed from Google Patents.
EP0123465A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Surgical adhesive dressing
Assignee: Smith and Nephew PLC
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Filing: 1984-04-05
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Granted: —
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Expires: 2004-04-05
Abstract
Abstract A surgical dressing is described which consists essentially of a film which carried an adhesive layer for securing the dressing to the body characterised in that (a) the film is continuous and comprises a polymer which in contact with water has a higher MVP than when in contact with moisture vapour but not water; (b) the adhesive layer is adapted to allow access of water to the film when water is in contact with the adhesive layer so that (c) the surgical dressing has an MVP of not less than 2500 g/m 2 when the adhesive layer is in contact with water and has an MVP of not more than 2000g/m 2 when the ahesive is in contact with moisture vapour but not water; whereby the dressing is suitable for use on exuding wounds and on non-exuding wounds.
Inventors
- 👤 David Alan Rawlings
- 👤 William Duncan Potter
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 16:18
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/22; A61L15/24; A61L15/26; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
136 words
A surgical dressing which consists essentially of a film which carries an adhesive layer for securing the dressing to the body characterised in that (a) the film is continuous and comprises a polymer which when in contact with water has a higher MVP than when in contact with moisture vapour but not water (b) the adhesive layer is porous and allows access of water to the film when water is in contact with the adhesive layer so that (c) said surgical dressing has an MVP of not less than 2500g/m 2 when the adhesive layer is in contact with water and has an MVP of not more than 2000g/m 2 when the adhesive is in contact with moisture vapour but not water; whereby the dressing is suitable for use on exuding wounds and on non-exuding wounds.
Claim 2
Dependent Claim
136 words
A surgical dressing which consists essentially of a film which carries an adhesive layer for securing the dressing to the body characterised in that (a) the film is continuous and comprises a polymer which when in contact with water has a higher MVP than when in contact with moisture vapour but not water (b) the adhesive layer is porous and allows access of water to the film when water is in contact with the adhesive layer so that (c) said surgical dressing has an MVP of not less than 2500g/m 2 when the adhesive layer is in contact with water and has an MVP of not more than 2000g/m 2 when the adhesive is in contact with moisture vapour but not water; whereby the dressing is suitable for use on exuding wounds and on non-exuding wounds.
Claim 3
Dependent Claim
29 words
A dressing as claimed in claim 1 wherein the MVP is not more than 1500g/m 2 when the adhesive layer is in contact with moisture vapour but not water.
Claim 4
Dependent Claim
28 words
A dressing as claimed in either of claims 1 or 2 wherein the MVP is not less than 3200g/m 2 when the adhesive layer is in contact with,water.
Claim 5
Dependent Claim
35 words
A dressing as claimed in any of claims 1 to 3 wherein the film comprises a hydrophilic polyurethane which when hydrated contains 5% to 50% of water and is from 15 to 80 microns thick.
Claim 6
Dependent Claim
31 words
A dressing as claimed in claim 4 wherein the film comprises a hydrophilic polyurethane which when hydrated contains 10% to 40% of water and is from 20 to 60 microns thick.
Claim 7
Dependent Claim
24 words
A dressing as claimed in any of claims 1 to 5 wherein the film is a hydrophilic polyurethane which is a hydrophilic polyether polyurethane.
Claim 8
Dependent Claim
33 words
A dressing as claimed in any of claims 1 to 6 wherein the adhesive is a porous layer in which the pores account for 10% to 50% of the area of the adhesive.
Claim 9
Dependent Claim
24 words
A dressing as claimed in any of claims 1 to 7 wherein the adhesive comprises a polyvinyl ethyl ether or an acrylate surgical adhesive.
Claim 10
Dependent Claim
28 words
A dressing as claimed in any of claims 1 to 8 in which the average weight per unit area of adhesive is 20g/m 2 to 45g/m 2 .
Claim 11
Dependent Claim
20 words
A dressing as claimed in any of claims 1 to 9 in sterile form packaged in a bacteria proof package.
References Cited (Backward Citations)
No citation records indexed.
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