EP0243069A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Adhesive wound dressing
Assignee: Ethicon Inc
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Filing: 1987-04-14
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Granted: —
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Expires: 2007-04-14
Abstract
Abstract A wound dressing comprises an alginate layer fixed to a plastics backing layer, such as a polyurethane film. The backing layer extends beyond the edges of the alginate layer to provide a marginal portion which is coated with adhesive. Such a dressing may be formed by providing an adhesive-coated plastics film having a lamella releasably attached to its adhesive surface, cutting the lamella into an inner and an outer portion, such that the outer portion surrounds the inner portion, removing the inner portion to expose a region of the adhesive-coated plastics film, and attaching the alginate layer to the exposed region of film.
Inventors
- 👤 Richard John Wiggans
- 👤 Leslie James Squires
- 👤 Rory James Maxwell Smith
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 08:02
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/58; A61F; A61F13/00; A61F13/02; A61F13/0203; A61F13/0213; A61F13/0223; A61L15/60
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
47 words
I. A wound dressing comprising a wound-contacting layer fixed to a substantially liquid impermeable plastics backing layer, the wound-contacting layer being formed from an alginate, and the backing layer extending beyond the edges of the wound-contacting layer to provide a marginal portion which is coated with adhesive.
Claim 2
Dependent Claim
26 words
A dressing according to claim I wherein the alginate is calcium alginate, silver alginate, zinc alginate, sodium alginate or a mixture of two or more thereof.
Claim 3
Dependent Claim
12 words
A dressing according to claim 2 wherein the alginate is calcium alginate.
Claim 4
Dependent Claim
16 words
A dressing according to any preceding claim wherein the alginate is in the form of fibres.
Claim 5
Dependent Claim
20 words
A dressing according to any of claims I to 3 wherein the alginate is in the form of a powder.
Claim 6
Dependent Claim
20 words
A dressing according to any of claims I to 3 wherein the alginate is in the form of a gel.
Claim 7
Dependent Claim
20 words
A dressing according to any of claims I to 3 wherein the alginate is in the form of a film.
Claim 8
Dependent Claim
29 words
A dressing according to any preceding claim wherein the plastics backing layer has a moisture vapour permeability in the range 1000 g/m 2 /24hr to 3000 g/m 2 /24hr.
Claim 9
Dependent Claim
15 words
A dressing according to any preceding claim wherein the plastics film is a polyurethane film.
Claim 10
Dependent Claim
13 words
A sterile dressing according to any preceding claim, contained within a bacteria-proof package.
Claim 11
Dependent Claim
76 words
II. A method of forming a wound dressing comprising the steps of · i) providing an adhesive-coated plastics film having a lamella releasably attached to its adhesive surface, ii) cutting the lamella into an inner and an outer portion, such that the outer portion surrounds the inner portion, iii) removing the inner portion to expose a region of the adhesive-coated plastics film, and iv) attaching a layer of absorbent material to said exposed region of film.
Claim 12
Dependent Claim
54 words
12 A method according to claim ll wherein, after attachment of the absorbent layer, the outer portion of lamella is removed in whole or in part to expose a further region of adhesive-coated film, to which is then attached one or more protective films to prevent soiling of the absorbent layer prior to use.
Claim 13
Dependent Claim
30 words
A method according to claim II or claim 12 wherein, prior to removal of the inner portion of the lamella, a handling tab is adhesively secured to said inner portion.
Claim 14
Independent Claim
17 words
A method according to any of claims ll to 12 wherein the absorbent material is an alginate.
References Cited (Backward Citations)
No citation records indexed.
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