EP0050514A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Wound dressings and processes for their preparation
Assignee: Smith and Nephew PLC
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Filing: 1981-10-20
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Granted: —
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Expires: 2001-10-20
Abstract
Abstract Sterile net of elastomeric polyurethane, sterile wound dressings comprising an absorbent layer and a wound facing layer of the sterile net and methods of manufacture are described.
Inventors
- 👤 Ronald Lloyd
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 12:56
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/22; A61L15/26; A61F; A61F13/00; A61F13/01; A61F13/01008; A61F13/01017; A61F13/15; A61F13/51; A61F13/511; A61F13/51104; A61F13/51121; A61F13/512; A61F13/551; A61F13/53; A61F13/539; A61F13/84; A61F13/8405; A61F2013/00089; A61F2013/00217; A61F2013/00221; A61F2013/00225; A61F2013/00246; A61F2013/00263; A61F2013/00361; A61F2013/00855; A61F2013/00876; A61F2013/00897; A61F13/15577; A61F2013/15821; A61F2013/5395
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
6 words
A sterile net of elastomeric polyurethane.
Claim 2
Dependent Claim
6 words
A sterile net of elastomeric polyurethane.
Claim 3
Dependent Claim
15 words
A net as claimed in claim 1 which is an integral net of linear polyurethane.
Claim 4
Dependent Claim
19 words
A sterile integral net as claimed in claim 2 in which the linear polyurethane comprises a linear polyether polyurethane.
Claim 5
Dependent Claim
24 words
A sterile net as claimed in any of claims 1 to 3 in which the net has a strand count of 8 to 24.
Claim 6
Dependent Claim
26 words
A sterile net as claimed in any of claims 1 to 4 in which the net.has a plurality of openings of 0.05mm to 1mm in size.
Claim 7
Dependent Claim
33 words
A sterile wound dressing which comprises an absorbent layer and a wound facing layer characterised in that the wound facing layer comprises an elastomeric polyurethane net of any of claims 1 to 5.
Claim 8
Dependent Claim
15 words
A sealed bateria-proof package containing a sterile net of any of claims 1 to 5.
Claim 9
Dependent Claim
12 words
A sealed bacteria-proof package containing a sterile wound dressing of claim 6.
Claim 10
Independent Claim
48 words
A method of making a sterile net of any of claims 1 to 5 which comprises casting an elastomeric polyurethane in a flowable state onto a surface having a pattern of discrete raised areas and interconnected recessed areas and treating the cast net to form a solid. net.
Claim 11
Dependent Claim
29 words
10 A method of making a sterile bacteria-proof package of either of claims 7 or 8 which comprises sterilising the net or wound dressing within a sealed bacteria-proof package.
References Cited (Backward Citations)
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