PERCUTANEOUS VALVE REPLACEMENT DEVICES
First Claim
1. A valve prosthesis comprising:
- an at least partially self-expanding stent comprising a wire framework defining outer and interior surfaces and an anchoring arm, said stent having an unexpanded and an expanded state, and said anchoring arm having an elbow region and a hook that clamps around mitral tissue of the patient when seated;
an elastic fabric/cloth that is wrapped circumferentially around the wire framework; and
a valve comprising at least one leaflet fixedly attached to the interior surface of said stent.
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Accused Products
Abstract
A self-expanding valved stent is constructed from a polytetrafluoroethylene (PTFE) covered nitinol or stainless steel wire frame. Anchoring is facilitated by arms emanating from the ventricular end of the device that are designed to atraumatically insinuate themselves around chordae and leaflets and trap them against the expanded stent body. The valve prosthesis includes a partially self-expanding stent having a wire framework defining outer and interior surfaces and anchoring arms. The stent has an unexpaneled and an expanded state and anchoring arms having an elbow region and a hook that clamps around mitral tissue of the patient when seated. An elastic fabric/cloth made of for example, PTFE material, is wrapped circumferentially around the wire framework. A valve having at least one leaflet is fixedly attached to the interior surface of the stent.
162 Citations
9 Claims
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1. A valve prosthesis comprising:
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an at least partially self-expanding stent comprising a wire framework defining outer and interior surfaces and an anchoring arm, said stent having an unexpanded and an expanded state, and said anchoring arm having an elbow region and a hook that clamps around mitral tissue of the patient when seated; an elastic fabric/cloth that is wrapped circumferentially around the wire framework; and a valve comprising at least one leaflet fixedly attached to the interior surface of said stent. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A valve prosthesis comprising:
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an at least partially self-expanding stent comprising a wire framework defining outer and interior surfaces, said stent having an unexpanded and an expanded state; an elastic fabric/cloth that is wrapped circumferentially around the wire framework; a valve comprising at least one leaflet fixedly attached to the interior surface of said stent; and an annuloplasty ring into which said stent is inserted prior to expansion, wherein said stent is adapted to be expanded to be held in place by radial pressure against said annuloplasty ring. - View Dependent Claims (8, 9)
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Specification