EP0331345A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Triaxially woven fabric for heart valve
Assignee: MTG Divestitures LLC
•
Filing: 1989-02-23
•
Granted: —
•
Expires: 2009-02-23
Abstract
Abstract A heart valve prosthesis has leaflets made of a triaxially woven fabric having three angularly displaced sets of substantially parallel courses of yarn (z,x,y) interwoven to prevent slippage of at least one yarn course along any other yarn course. The fabric is preferably embedded in a polymeric matrix.
Inventors
- 👤 Thomas A. Silvestrini
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 19:48
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2412
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
88 words
A heart valve prosthesis comprising a frame having a generally circular base defining the circumferential direction of the prosthesis, and means extending from said base and defining the axial direction of the prosthesis, characterized in that said means supports a plurality of triaxially woven fabric elements such that said elements function as heart valve leaflets during operation of the valve, said fabric having three angularly displaced sets of substantially parallel courses of yarn interwoven to prevent slippage of at least one yarn course along any other yarn course.
Claim 2
Dependent Claim
88 words
A heart valve prosthesis comprising a frame having a generally circular base defining the circumferential direction of the prosthesis, and means extending from said base and defining the axial direction of the prosthesis, characterized in that said means supports a plurality of triaxially woven fabric elements such that said elements function as heart valve leaflets during operation of the valve, said fabric having three angularly displaced sets of substantially parallel courses of yarn interwoven to prevent slippage of at least one yarn course along any other yarn course.
Claim 3
Dependent Claim
22 words
A prosthesis according to claim 1 or 2, characterized in that said fabric of elastomeric yarns is embedded in a polymeric matrix.
Claim 4
Dependent Claim
34 words
A prosthesis according to claim 1 characterized in that said courses of yarn are made of the same material, one of said courses of yarn being oriented in said circumferential direction of said frame.
Claim 5
Dependent Claim
18 words
A prosthesis according to claim 1 or 2, characterized in that said yarns are made from elastomeric material.
Claim 6
Dependent Claim
30 words
A prosthesis according to claim 1 or 2, characterized in that one of said courses of yarn is made of a material different from said other two courses of yarn.
Claim 7
Dependent Claim
40 words
A prosthesis according to claim 5, characterized in that one of said courses of yarn is oriented in the circumferential direction and is made from high strength yarn, and said two remaining courses of yarn are made of elastomeric yarn.
Claim 8
Dependent Claim
25 words
A prosthesis according to claim 6, characterized in that said high strength yarn is made of polyester, and said elastomeric yarn is made of polyurethane.
Claim 9
Dependent Claim
21 words
A prosthesis according to claim 1, characterized in that each of said courses of yarn is made of a different material.
Claim 10
Dependent Claim
26 words
A prosthesis according to any one of claims 1 to 8, characterized in that said heart valve leaflets are made of one sheet of said fabric.
Claim 11
Dependent Claim
28 words
A prosthesis according to claim 9, characterized in that said sheet is in the form of a cylinder draped over said means, which means comprises three spaced members.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.