Methods and devices for delivery of prosthetic heart valves and other prosthetics
First Claim
1. A method for deploying a prosthetic heart valve, comprising:
- advancing a prosthetic heart valve through vasculature of a patient to a treatment site along a wall of a blood vessel, the prosthetic heart valve comprising (i) a tubular support structure comprising a plurality of expandable segments oriented along a periphery of the support structure, and (ii) a plurality of valve leaflets coupled with the plurality of segments, wherein each expandable segment is transformable between a first shape and a second, expanded shape, and wherein at least one expandable segment is restrained in the first shape by a restraining member;
removal of the restraining member from the at least one expandable segment such that the at least one expandable segment is free to spontaneously expand; and
after removal of the restraining member, expanding an expandable deployment mechanism a first amount of distance against the at least one expandable segment in the first shape to cause the at least one expandable segment to expand a second amount of distance from the first shape to the second, expanded shape in contact with the vessel, wherein the first amount of distance is shorter than the second amount of distance and the expanding of the expandable deployment mechanism stops before the at least one expandable segment expands to the second, expanded shape in contact with the vessel.
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Accused Products
Abstract
Prosthetic valves and their component parts are described, as are prosthetic valve delivery devices and methods for their use. The prosthetic valves are particularly adapted for use in percutaneous aortic valve replacement procedures. The delivery devices are particularly adapted for use in minimally invasive surgical procedures. The preferred delivery device includes a catheter having a deployment mechanism attached to its distal end, and a handle mechanism attached to its proximal end. A plurality of tethers are provided to selectively restrain the valve during deployment. A number of mechanisms for active deployment of partially expanded prosthetic valves are also described.
308 Citations
19 Claims
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1. A method for deploying a prosthetic heart valve, comprising:
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advancing a prosthetic heart valve through vasculature of a patient to a treatment site along a wall of a blood vessel, the prosthetic heart valve comprising (i) a tubular support structure comprising a plurality of expandable segments oriented along a periphery of the support structure, and (ii) a plurality of valve leaflets coupled with the plurality of segments, wherein each expandable segment is transformable between a first shape and a second, expanded shape, and wherein at least one expandable segment is restrained in the first shape by a restraining member; removal of the restraining member from the at least one expandable segment such that the at least one expandable segment is free to spontaneously expand; and after removal of the restraining member, expanding an expandable deployment mechanism a first amount of distance against the at least one expandable segment in the first shape to cause the at least one expandable segment to expand a second amount of distance from the first shape to the second, expanded shape in contact with the vessel, wherein the first amount of distance is shorter than the second amount of distance and the expanding of the expandable deployment mechanism stops before the at least one expandable segment expands to the second, expanded shape in contact with the vessel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for deploying a prosthetic heart valve, comprising:
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advancing a prosthetic heart valve through vasculature of a patient to a treatment site along a wall of a blood vessel, the prosthetic heart valve comprising (i) a tubular support structure comprising a plurality of expandable segments oriented along a periphery of the support structure, and (ii) a plurality of valve leaflets coupled with the plurality of segments, wherein each expandable segment is transformable between a first shape and a second, expanded shape, and wherein each expandable segment is restrained in the first shape by a restraining member; removal of the restraining member for each expandable segment such that each expandable segment is free to spontaneously expand; and expanding an expandable deployment mechanism a first amount of distance against the plurality of expandable segments in the first shape to cause the plurality of expandable segments to expand a second amount of distance from the first shape to the second, expanded shape in contact with the vessel, wherein the first amount of distance is shorter than the second amount of distance and the expanding of the expandable deployment mechanism stops before the plurality of expandable segments spontaneously expand to the second, expanded shape in contact with the vessel. - View Dependent Claims (16, 17, 18, 19)
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Specification