EP0595791A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Annuloplasty ring prosthesis
Assignee: Baxter International Inc
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Filing: 1990-02-01
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Granted: —
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Expires: 2010-02-01
Abstract
Abstract An annuloplasty ring prosthesis has a flexible, annular body including one or more defined lengths (16,30), which are more rigid than the remainder of the body. The flexible body increases in flexibility about its circumference in a direction away from the, or each rigid, defined length and is formed from a plurality of individual wire elements. The elements may be wire strands (14,24) secured in a bundle, positioned in respective lumens (26) of a multiple lumen enclosure (28), or may be layers (38) of one or more wire bands wrapped on one another.
Inventors
- 👤 Hung L. Lam
- 👤 Than Nguyen
- 👤 Alain Carpentier
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-22 23:46
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2442; A61F2/2445; A61F2/2448; A61F2250/00; A61F2250/0014; A61F2250/0018
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
201 words
An annuloplasty ring prosthesis for suturing about a heart valve annulus comprising a selectively flexible body member having a substantially annular shape proportional to fit about the circumference of said heart valve annulus, said body member being formed at one or more positions about its circumference with one or more defined lengths (16,30,42) which are substantially more rigid than the remainder of said body member circumference, said member gradually increasing in flexibility about its circumference in a direction away from the, or each of said defined rigid lengths; and means (20) for encapsulating said body member and formed to permit suturing of said ring prosthesis about said heart valve, characterised in that the body member is formed from a plurality of wire elements (14,24,38), the elements being wire strands (14,24) or wire band layers (38), the wire strands (14) being formed into a bundle with said defined lengths (16,30) being formed by fixing the wire strands together, or the wire strands (24) being positioned individually in lumens (26) of a multiple lumen tubular enclosure (28), or the wire band layers (38) being formed from one or more individual substantially flat bands wrapped upon one another to form a multiple layered structure.
Claim 2
Dependent Claim
24 words
The annuloplasty ring prosthesis of Claim 1 wherein the wire strands (14) of said bundle are individually coated with polytetrafluoroethylene or an elastomeric material.
Claim 3
Dependent Claim
19 words
The annuloplasty ring prosthesis of Claim 1, wherein said bundle of individual strands is embedded in an elastomeric material.
Claim 4
Dependent Claim
46 words
The annuloplasty ring prosthesis of any preceding claim wherein each said defined rigid length (16,30) is formed by positioning a malleable material (18) around a portion of said wire strands (14,24) which is to define said rigid length, and pinching said material down upon said strands.
Claim 5
Dependent Claim
33 words
The annuloplasty ring prosthesis of Claim 4, wherein said malleable material is pinched down upon said strands (24) after a portion of said multiple-lumen tube (28) is removed to expose said wire strands.
Claim 6
Dependent Claim
19 words
The annuloplasty ring prosthesis of Claim 1 wherein said body member is formed from a single wound band (38).
Claim 7
Dependent Claim
20 words
The annuloplasty ring prosthesis of Claim 1 wherein said body member is formed from a plurality of individual bands (38).
Claim 8
Dependent Claim
36 words
The annuloplasty ring prosthesis of Claim 6 or 7 wherein said defined rigid length is formed by crimping or welding together a length of said individual band (38), or a length of said individual bands (38).
Claim 9
Dependent Claim
40 words
The annuloplasty ring prosthesis of any preceding claim wherein said body member includes only one of said defined rigid lengths (16,30,42) which rigid length is defined by from about 1/8 to about 1/2 of the circumference of said body member.
Claim 10
Dependent Claim
40 words
The annuloplasty ring prosthesis of any preceding claim wherein said body member is configured with two opposing longitudinal sides being longer than intervening lateral sides, said rigid length or lengths (16,30,42) being defined along one of said longitudinal sides (12).
Claim 11
Dependent Claim
35 words
The annuloplasty ring prosthesis of Claim 10 wherein one of said longitudinal sides (12) is substantially straight, and wherein said rigid length (16,30,42) is defined along at least part of said substantially straight longitudinal side.
Claim 12
Dependent Claim
29 words
The annuloplasty ring prosthesis of Claim 10 wherein said substantially straight longitudinal side (12) is defined along from about 1/5 to about 1/3 of the circumference of said member.
Claim 13
Dependent Claim
28 words
The annuloplasty ring prosthesis of Claim 11 wherein said rigid length (16,30,42) is defined along from about 5/8 to about the entire length of said straight side (12).
Claim 14
Dependent Claim
42 words
The annuloplasty ring prosthesis of Claim 10, 11, 12 or 13 wherein a ratio of a stiffness, as measured by the spring rate in a longitudinal direction over the spring rate in a lateral direction is from about 1.15 to about 2.77.
References Cited (Backward Citations)
No citation records indexed.
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