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EP0349505A2
Expired / Lapsed
EP
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A novel surgical material
Assignee: AstraZeneca AB
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Filing: 1989-06-19
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Granted: —
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Expires: 2009-06-19
Abstract
Abstract A material for tissue separation at healing processes in injured soft tissue in mammals including man is described. The material consists of a porous flexible sheet of a protein-free bioresorbable polymer. Processes for preparation of the material and use thereof are also described.
Inventors
- 👤 Staffan Folke Bowald
- 👤 Eva Gunilla Johansson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 13:36
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L31/00; A61L31/14; A61L31/148; A61F; A61F2/00; A61F2/0063; A61L27/00; A61L27/14; A61L27/18; A61L27/40; A61L27/44; A61L27/48; A61L27/50; A61L27/56; A61L27/58; A61L31/04; A61L31/06; A61L31/12; A61L31/125; A61L31/129; A61L31/146; A61F2210/00; A61F2210/0004
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
54 words
A material for tissue separation at healing processes in injured soft tissue in mammals including man, characterized in that it consists of a porous flexible sheet of a protein-free bioresorbable polymer having a pore size which permits passage of water and salts through the sheet but which locks out cells and other tissue particles.
Claim 2
Dependent Claim
54 words
A material for tissue separation at healing processes in injured soft tissue in mammals including man, characterized in that it consists of a porous flexible sheet of a protein-free bioresorbable polymer having a pore size which permits passage of water and salts through the sheet but which locks out cells and other tissue particles.
Claim 3
Dependent Claim
20 words
A material according to claim 1, characterized in that the pore size is up to 30 µm, preferentially 0.1-10 µm.
Claim 4
Dependent Claim
22 words
A material according to claim 1 or 2, characterized in that it the thickness of the sheet is about 10 µm-1 mm.
Claim 5
Dependent Claim
23 words
A material according to one or more of the preceding claims, characterized in that it is adapted for healing of internal soft tissue.
Claim 6
Dependent Claim
17 words
A material according to claim 4, characterized in that it is adapted to separate an injured muscle.
Claim 7
Dependent Claim
19 words
A material according to claim 4, characterized in that it is adapted to replace a part of the pericardium.
Claim 8
Dependent Claim
23 words
A process for preparing a material according to one or more of the preceding claims, characterized in preparing a sheet by non-woven technique.
Claim 9
Dependent Claim
24 words
A process for preparing a material according to one or more of claims 1-6, characterized in preparing a sheet by precipitation of the polymer.
Claim 10
Dependent Claim
22 words
A process for preparing a material according to one or more of claims 1-6, characterized in perforating a sheet by laser technique.
Claim 11
Dependent Claim
49 words
Use of a protein-free bioresorbable polymer for preparing a porous flexible sheet for tissue separation at healing processes in injured soft tissue in mammals including man, said sheet having a pore size which permits passage of water and salts therethrough but which locks out cells and other tissue particles.
Claim 12
Dependent Claim
49 words
Use of a protein-free bioresorbable polymer for preparing a porous flexible sheet for tissue separation at healing processes in injured soft tissue in mammals including man, said sheet having a pore size which permits passage of water and salts therethrough but which locks out cells and other tissue particles.
Claim 13
Dependent Claim
27 words
Use of a material according to one or more of claims 1-6 for tissue separation at the healing process in injured soft tissue in mammals including man.
Claim 14
Independent Claim
35 words
A method for improving the healing process in injured soft tissue in mammals including man, whereby a material according to one or more of claims 1-6 is used for separation of the injured soft tissue.
References Cited (Backward Citations)
No citation records indexed.
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