GB2092894A
Expired / Lapsed
GB
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Arterial graft prosthesis
Assignee: Thoratec LLC
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Filing: 1982-02-10
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Granted: —
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Expires: 2002-02-10
Abstract
Abstract An arterial graft prosthesis comprises a first interior zone of a solid, segmented polyether-polyurethane material surrounded by a second zone of a porous, segmented, polyether-polyurethane and a third zone immediately surrounding said second zone and of a solid, segmented polyether-polyurethane. The interior zone may have a lining or blood interface of a microporous zone of segmented polyether-polyurethane, and the exterior, third zone may be surrounded by a tissue interface of a microporous zone of segmented polyether-polyurethane. In some instances the exterior may be confined by a tube of substantially non-stretchable netting fastened in place at chosen, spaced intervals or other forms of reinforcement may be employed. Other materials can be used.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
GB
Data Source
google_patents
Last Synchronized
2026-10-23 03:03
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61F2/07; A61L; A61L27/00; A61L27/14; A61L27/18; A61L27/50; A61L27/507; A61F2/82; A61F2/86; A61F2/88; A61F2/89; A61F2002/072; A61F2002/826
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
26 words
An arterial graft prosthesis formed of at least two concentric tubular zones of elastomer material homogeneously joined together, one of said zones being a porous elastomer.
Claim 2
Dependent Claim
26 words
An arterial graft prosthesis formed of at least two concentric tubular zones of elastomer material homogeneously joined together, one of said zones being a porous elastomer.
Claim 3
Dependent Claim
17 words
An arterial graft prosthesis as defined in Claim 1, wherein said elastomer material is a polyether- polyurethane.
Claim 4
Dependent Claim
15 words
An arterial graft prosthesis as defined in Claim 1, wherein said elastomer material is thermoplastic.
Claim 5
Dependent Claim
40 words
An arterial graft prosthesis formed of a core zone of porous elastomer disposed about the longitudinal axis of the prosthesis, an inner zone of solid elastomer concentric with and homogeneously joined to the inside of said zone of porous elastomer.
Claim 6
Dependent Claim
40 words
An arterial graft prosthesis formed of a core zone of porous elastomer disposed about the longitudinal axis of the prosthesis, an inner zone of solid elastomer concentric with and homogeneously joined to the inside of said zone of porous elastomer.
Claim 7
Dependent Claim
38 words
An arterial graft prosthesis as defined in Claim 4, together with an outer zone of solid elastomer, said outer zone of solid elastomer being concentric with and homogeneously joined to the outside of said zone of porous elastomer.
Claim 8
Dependent Claim
33 words
An arterial graft prosthesis as defined in Claim 5, together with a tissue interface zone of microporous elastomer concentric with and homogeneously joined to the outside of said outer zone of solid elastomer.
Claim 9
Dependent Claim
18 words
An arterial graft prosthesis as defined in Claims 4, 5 or 6, wherein said solid elastomer is hydrophobic.
Claim 10
Dependent Claim
36 words
An arterial graft prosthesis as defined in Claims 4, 5 or 6, together with a blood interface zone of microporous elastomer concentric with and homogeneously joined to the inside of said inner zone of solid elastomer.
Claim 11
Dependent Claim
25 words
An arterial graft prosthesis as defined in Claims 4, 5 or 6 wherein said core zone has a thickness of from 10 to 80 mils.
Claim 12
Dependent Claim
36 words
An arterial graft prosthesis as defined in Claim 9 wherein said core zone defines pores con prising from 30% to 90% of its volume, said pores having a diameter and depth of up to 150 microns.
Claim 13
Dependent Claim
28 words
An arterial graft prosthesis as defined in Claims 4, 5 or 6 wherein said inner zone of solid elastomer has a thickness of from 1 to 6 mils.
Claim 14
Dependent Claim
27 words
An arterial graft prosthesis as defined in Claims 5 or 6 wherein said outer zone of solid elastomer has a thickness of from 1 to 6 mils.
Claim 15
Dependent Claim
27 words
An arterial graft prosthesis as defined in Claim 6 wherein said tissue interface zone defines pores having a diameter and depth of from 30 to 150 microns.
Claim 16
Dependent Claim
27 words
An arterial graft prosthesis as defined in Claim 8 wherein said blood interface zone defines pores having a diameter and depth of from 5 to 100 microns.
Claim 17
Dependent Claim
19 words
An arterial graft prosthesis as defined in Claims 4, 5 or 6 wherein said elastomer material is a thermoplastic.
Claim 18
Dependent Claim
17 words
An arterial graft prosthesis as defined in Claim 15 wherein said elastomer material is a segmented polyether-polyurethane.
Claim 19
Dependent Claim
19 words
An arterial graft prosthesis as defined in Claim 6 wherein the surface of said tissue interface zone is hydrophilic.
Claim 20
Dependent Claim
19 words
An arterial graft prosthesis as defined in Claim 8 wherein the surface of said blood interface zone is hydrophilic.
Claim 21
Dependent Claim
29 words
An arterial graft prosthesis as defined in 6 GB 2 092 894 A 6 Claim 18 wherein the surface of said blood interface zone is coated with an antithrombin.
Claim 22
Dependent Claim
10 words
An arterial graft prosthesis comprising a porous segmented polyether-polyurethane. 5
Claim 23
Dependent Claim
10 words
An arterial graft prosthesis comprising a porous segmented polyether-polyurethane. 5
Claim 24
Dependent Claim
23 words
An arterial graft prosthesis as defined in Claims 1, 2,3,4,5,6,10,13 or 17 togetherwith reinforcing means connected to one of said zones of elastomer.
Claim 25
Dependent Claim
21 words
An arterial graft prosthesis as defined in Claim 21 wherein said reinforcing means is disposed about the outerzone of said prosthesis.
Claim 26
Dependent Claim
24 words
An arterial graft prosthesis as defined in Claim 21 wherein said reinforcing means is disposed within at least one of said zones of elastomer.
Claim 27
Dependent Claim
17 words
An arterial graft prosthesis as defined in Claim 21 wherein said reinforcing means comprises a non-stretchable netting.
Claim 28
Dependent Claim
24 words
An arterial graft prosthesis as defined in Claim 21 wherein said reinforcing means comprises a filament circumferentially wound aboutthe longitudinal axis of said prosthesis.
Claim 29
Dependent Claim
27 words
An arterial graft prosthesis as defined in Claim 25 wherein said filament has a tensile elastic modulus in the range of from 10,000 to 200, 000 psi.
Claim 30
Dependent Claim
35 words
An arterial graft prosthesis as defined in Claim 26 wherein the ratio of the distance between loops of the circumferentially wound fiflameritto the diameter of said filament lies inthe range of from 1.5 to 5.
Claim 31
Dependent Claim
21 words
An arterial graft prosthesis as defined in Claim 23 wherein said reinforcing means comprises an elastomer formed as a corrugated tube.
Claim 32
Dependent Claim
18 words
An arterial graft prosthesis as defined in Claim 23 wherein said reinforcing means comprises a helicafly wound filament.
Claim 33
Dependent Claim
20 words
An arterial graft prosthesis as defined in Claim 23 wherein said reinforcing means comprises a plurality of axially spaced hoops.
Claim 34
Dependent Claim
29 words
An arterial graft prosthesis as defined in Claims 1, 2,3r 4, 5, 6,10,13 or 17 wherein the outer surface of said core zones and of said prosthesis is corrugated.
Claim 35
Dependent Claim
23 words
An arterial graft prosthesis as defined in Claim 29 wherein the inner surface of said core zone and of said prosthesis is corrugated.
Claim 36
Dependent Claim
50 words
An arterial graft prosthesis substantially as hereinbefore described with reference to and as illustrated in any of the accompanying drawings. Printed for Her Majesty's Stationery Office by The Tweeddale Press Ltd., Berwick-upon-Tweed, 1982. Published atthe Patent Office, 25 Southampton Buildings, London, WC2A lAY, from which copies may be obtained. JC
Claim 37
Dependent Claim
50 words
An arterial graft prosthesis substantially as hereinbefore described with reference to and as illustrated in any of the accompanying drawings. Printed for Her Majesty's Stationery Office by The Tweeddale Press Ltd., Berwick-upon-Tweed, 1982. Published atthe Patent Office, 25 Southampton Buildings, London, WC2A lAY, from which copies may be obtained. JC
References Cited (Backward Citations)
No citation records indexed.
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