DEVICES AND METHODS FOR DELIVERY OF AORTIC AND MITRAL VALVE PROSTHESES
First Claim
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1. A method for deploying a cardiac valve prosthesis, comprising:
- providing an implantation device, wherein the implantation device comprises,a valve prosthesis comprising,a support frame radially expandable between a compact condition and an expanded condition, said support frame having an outer surface and defining a central orifice about an axis along an inflow-outflow direction;
a plurality of flexible leaflets attached to the support frame to provide a one-way valve in the orifice when the support frame is in its expanded condition; and
at least one valve clasper movably attached to said support frame such that said at least one valve clasper is movable-along said axis between a nesting position with the outer surface of the support frame and an engagement position, wherein the at least one valve clasper is comprised of a u-shaped member; and
a control unit;
at least one track wire, said at least one track wire having a proximal end attached to the control unit and a distal end for contact with the at least one valve clasper;
a first sheath, wherein the first sheath encases at last a portion of the at least one valve clasper; and
a second sheath, wherein the second sheath encases at least a portion of the support frame in a compact condition and wherein the second sheath is positioned serially to and distally from the first sheath;
inserting the implantation device into a patient for deploying the valve prosthesis within a native cardiac valve; and
removing the implantation device without the valve prosthesis from the patient.
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Abstract
A valve prosthesis and implantation device, and methods for use are provided. The devices described herein may be used for transcatheter delivery of an aortic valve prosthesis or transapical delivery of a mitral valve prosthesis. The implantation device utilizes movable claspers for both positioning and anchoring the valve prosthesis, reducing the extent of imaging needed during the implantation procedure.
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Citations
11 Claims
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1. A method for deploying a cardiac valve prosthesis, comprising:
providing an implantation device, wherein the implantation device comprises, a valve prosthesis comprising, a support frame radially expandable between a compact condition and an expanded condition, said support frame having an outer surface and defining a central orifice about an axis along an inflow-outflow direction; a plurality of flexible leaflets attached to the support frame to provide a one-way valve in the orifice when the support frame is in its expanded condition; and at least one valve clasper movably attached to said support frame such that said at least one valve clasper is movable-along said axis between a nesting position with the outer surface of the support frame and an engagement position, wherein the at least one valve clasper is comprised of a u-shaped member; and a control unit; at least one track wire, said at least one track wire having a proximal end attached to the control unit and a distal end for contact with the at least one valve clasper; a first sheath, wherein the first sheath encases at last a portion of the at least one valve clasper; and a second sheath, wherein the second sheath encases at least a portion of the support frame in a compact condition and wherein the second sheath is positioned serially to and distally from the first sheath; inserting the implantation device into a patient for deploying the valve prosthesis within a native cardiac valve; and removing the implantation device without the valve prosthesis from the patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
Specification