EP0350302B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Heart valve prosthesis
Assignee: Medtronic Inc
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Filing: 1989-07-06
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Granted: 1993-06-02
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Expires: 2009-07-06
Abstract
No abstract record available.
Inventors
- 👤 Manuel T. Alonso
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 15:05
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2409; Y; Y10; Y10S; Y10S623/00; Y10S623/90
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
134 words
A heart valve comprising a valve member (60) removably engageable with a sewing ring (20), wherein said sewing ring defines a cylindrical inner surface (30) and said valve member has a cylindrical outer surface corresponding to the cylindrical inner surface of said sewing ring, characterised in that said inner surface of said sewing ring is spaced from said outer surface of said valve member, said inner and outer surfaces of said sewing ring and said valve member, respectively, being free of inwardly and outwardly directed protrusions, respectively, and said valve member being attachable to said sewing ring by means of sutures (82,84,86), whereby said valve member may be removed from said sewing ring by passage of a blade circumferentially around said valve member in the space between said valve member and said sewing ring.
Claim 2
Dependent Claim
38 words
A valve as claimed in claim 1 comprising slots (38-43) on the sewing ring for receiving sutures; and sutures (82,84,86) on the valve member generally adjacent the slots when the valve member is mounted in the sewing ring.
Claim 3
Dependent Claim
28 words
A valve as claimed in claim 2 wherein the slots comprise pairs of openings and the sutures are in pairs, each suture of a pair having a needle.
Claim 4
Dependent Claim
48 words
A valve as claimed in claim 1 comprising sutures (82,84,86) extending through the wall of the valve means and slots in the sewing ring for receiving the sutures whereby knots on the sutures outside of the sewing ring hold the valve means in place within the sewing ring.
Claim 5
Dependent Claim
112 words
A valve as claimed in any preceding claim wherein said sewing ring (20) has a main ring (22) forming a central bore (31), the ring having an inner surface (30) towards the central bore and an outer surface (32), the outer surface including two annular grooves (34,36); first and second O-rings (26,28) sized to fit the two grooves on the main ring; and cloth (24) for forming a sewing ring, mounted by first surrounding the ring, then by having the cloth held to the ring by mounting the first and second O-rings over the cloth, and the cloth being sewn in place around the O-rings on the outer surface of the ring.
References Cited (Backward Citations)
No citation records indexed.
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