EP0406665A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Vascular prosthesis containing in the wall microcapsules, including hormoneproducing cells
Assignee: Individual
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Filing: 1990-06-26
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Granted: —
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Expires: 2010-06-26
Abstract
Abstract Vascular prostheses (1) of PTFE or of a low porosity material comprising an internal synthetic tubular mesh (1); microcapsules (2) made of saccharide and amino-acid polymers, containing hormone-producing cells, are placed between the prosthesis and the tubular mesh.
Inventors
- 👤 Giovanni Brotzu
- 👤 Riccardo Calafiore
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 17:41
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/50; A61L27/507; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61L27/54; A61F2250/00; A61F2250/0058; A61F2250/0067; A61L2300/00; A61L2300/40; A61L2300/43; A61L2300/60; A61L2300/62; A61L2300/622; A61L2300/64
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
60 words
Vascular prosthesis consisting of a vascular prosthesis (1) of PTFE or of a low porosity material including in its interior another prosthesis (3) of a synthetic tubular mesh, which allows the passage of oxygen and hormones: microcapsules (2) consisting of polysaccharide and amino-acid polymers or of other semi-permeable materials and containing the hormone-producing cells, being placed between the two prostheses.
Claim 2
Dependent Claim
60 words
Vascular prosthesis consisting of a vascular prosthesis (1) of PTFE or of a low porosity material including in its interior another prosthesis (3) of a synthetic tubular mesh, which allows the passage of oxygen and hormones: microcapsules (2) consisting of polysaccharide and amino-acid polymers or of other semi-permeable materials and containing the hormone-producing cells, being placed between the two prostheses.
Claim 3
Dependent Claim
18 words
Prosthesis according to claim 1, characterized in that such tubular mesh is made of polyester or polytetrafluoroethylene fibres.
Claim 4
Dependent Claim
21 words
Prosthesis according to claim 1, characterized in tha such tubular mesh has an internal diameter of between 4 and 14 mm.
Claim 5
Dependent Claim
25 words
Prosthesis according to claim 1, characterized in that the free spaces between the filaments making up such mesh are of between 10 and 300 micron.
Claim 6
Dependent Claim
86 words
Process for the preparation of vascular prostheses comprising within their limits microcapsules containing hormone-producing cells, characterized in that: a) inside a vascular prosthesis (1) made of PTFE or of a low porosity material, a second prosthesis (3) is placed consisting of a tubular mesh of synthetic material with external support (EXS); b) microcapsules (2) of saccharide and amino-acid polymers containing hormone-producing cells are placed in the space between prosthesis (1) and prosthesis (3); c) a spindle (4) of plastic material is introduced in said prosthesis (3).
Claim 7
Dependent Claim
86 words
Process for the preparation of vascular prostheses comprising within their limits microcapsules containing hormone-producing cells, characterized in that: a) inside a vascular prosthesis (1) made of PTFE or of a low porosity material, a second prosthesis (3) is placed consisting of a tubular mesh of synthetic material with external support (EXS); b) microcapsules (2) of saccharide and amino-acid polymers containing hormone-producing cells are placed in the space between prosthesis (1) and prosthesis (3); c) a spindle (4) of plastic material is introduced in said prosthesis (3).
Claim 8
Dependent Claim
29 words
Process according to claim 5, characterized in that said spindle is made of silastic or PVC and has an external diameter compatible with the internal diameter of said mesh.
Claim 9
Dependent Claim
18 words
Process according to claim 5, characterized in that said mesh is made up of polyester or polytetrafluoroethylene fibres.
Claim 10
Dependent Claim
21 words
Process according to claim 5, characterized in that said tubular mesh has an internal diameter of between 4 and 14 mm.
Claim 11
Dependent Claim
25 words
Process according to claim 5, characterized in that the free spaces between the filaments making up said mesh are of between 10 and 300 micron.
References Cited (Backward Citations)
GB2119734A
Cited
WO1982003764A1
Cited
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