Percutaneous Heart Valve
1 Assignment
0 Petitions
Accused Products
Abstract
A percutaneously inserted bistable heart valve prosthesis is folded inside a catheter for transseptal delivery to the patient'"'"'s heart for implantation. The heart valve has an annular ring, a body member having a plurality of legs, each leg connecting at one end to the annular ring, claws that are adjustable from a first position to a second position by application of external force so as to allow ingress of surrounding heart tissue into the claws in the second position, and leaflet membranes connected to the annular ring, the body member and/or the legs, the leaflet membranes having a first position for blocking blood flow therethrough and a second position for allowing blood flow therethrough. The heart valve is designed such that upon removal of the external force the claws elastically revert to the first position so as to grip the heart tissue positioned within the claws, thereby holding the heart valve in place. The body member and claws may be integrated into a one-piece design. The heart valve may be used as a prosthesis for the mitral valve, aortic valve, pulmonary valve, or tricuspid valve by adapting the annular ring to fit in a respective mitral, aortic, pulmonary, or tricuspid valve opening of the heart.
113 Citations
48 Claims
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16. A method of implanting a bistable percutaneous heart valve, comprising the steps of:
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a. folding said bistable percutaneous heart valve into a collapsed position; b. inserting a catheter into a patient and guiding a distal end of said catheter to a position adjacent an implantation position in a patient'"'"'s heart; c. inserting said folded heart valve into said catheter and steering said folded heart valve to said distal end of said catheter using a guiding device; d. guiding said folded heart valve beyond said distal end of said catheter so as to cause said heart valve to elastically unfold to a stable unfolded position; e. forcing the unfolded heart valve into a second stable position; f. guiding the heart valve to the implantation position; g. adjusting at least two claws of said heart valve by the application of an external force so as to allow ingress of surrounding heart tissue into said claws, whereupon removal of the external force the claws elastically revert to an initial position so as to grip the heart tissue positioned within the claws, thereby holding said heart valve in place; and h. removing the guiding device and the catheter. - View Dependent Claims (17, 18, 20, 21, 22, 23, 24)
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25. A method of implanting a heart valve, comprising the steps of:
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a. providing a heart valve that includes (i) an annular ring, (ii) a plurality of circumferentially spaced tissue engaging members mounted with respect to the annular ring, and (iii) a plurality of leaflet membranes mounted with respect to the annular ring; b. folding said heart valve into a collapsed position such that said plurality of tissue engaging members are positioned in a non-tissue engaging orientation relative to the annular ring; c. inserting said folded heart valve into a catheter; d. positioning a distal end of said catheter adjacent an implantation site in a patient'"'"'s heart; e. advancing said folded heart valve beyond said distal end of said catheter so as to permit said heart valve to elastically unfold to an unfolded position, whereby said plurality of tissue engaging members assume a tissue engaging orientation relative to the annular ring; and f. anchoring said plurality of tissue engaging members in heart tissue, thereby holding said heart valve in place relative to said implantation site. - View Dependent Claims (1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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33-1. The implantation method of claim 31, further comprising the step of manipulating said plurality of filaments in connection with said anchoring of said plurality of tissue engaging members in said heart tissue.
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39. A method of implanting a heart valve, comprising the steps of:
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a. providing a heart valve that includes (i) an annular ring, (ii) a plurality of circumferentially spaced tissue engaging members mounted with respect to the annular ring, and (iii) a plurality of leaflet membranes mounted with respect to the annular ring; b. collapsing said heart valve into a collapsed position wherein said annular ring is elastically deformed such that said plurality of tissue engaging members are positioned in a non-tissue engaging orientation relative to the deformed annular ring; c. advancing said heart valve in said collapsed position to an implantation site; d. permitting said annular ring of said heart valve to elastically return to a non-deformed configuration, whereby said plurality of tissue engaging members assume a tissue engaging orientation relative to the annular ring; and e. anchoring said plurality of tissue engaging members with respect to heart tissue, thereby holding said heart valve in place relative to said implantation site. - View Dependent Claims (40, 41, 42, 43, 44, 45, 46, 47, 48)
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Specification