PROSTHETIC HEART VALVE AND DELIVERY APPARATUS
First Claim
1. A heart-valve delivery apparatus for delivering a prosthetic heart valve via a patient'"'"'s vasculature, comprising:
- a catheter comprising a flexible torque shaft adapted to extend through the patient'"'"'s vasculature, the torque shaft having a distal end portion coupled to the prosthetic valve; and
a valve sheath configured to receive the valve in a radially compressed state when coupled to the distal end portion of the torque shaft for delivery to the heart through the patient'"'"'s vasculature;
wherein rotation of the torque shaft is effective to cause relative longitudinal movement between the sheath and the valve to advance the valve from the sheath for deployment in the heart.
1 Assignment
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Accused Products
Abstract
Embodiments of the present disclosure provide a prosthetic heart valve and a heart valve delivery apparatus for delivery of the prosthetic heart valve to a native valve site via the human vasculature. The delivery apparatus is particularly suited for advancing a prosthetic valve through the aorta (i. e., in a retrograde approach) for replacing a diseased native aortic valve. In one embodiment, a self-expanding valve comprises an expandable stent that is shaped to maintain the valve in the aortic annulus against axial without anchors or retaining devices that engage the surrounding tissue. A delivery apparatus for delivering s self-expanding prosthetic valve can be configured to allow controlled and precise deployment of the valve from a valve sheath so as to minimize or prevent jumping of the valve from the valve sheath.
1094 Citations
22 Claims
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1. A heart-valve delivery apparatus for delivering a prosthetic heart valve via a patient'"'"'s vasculature, comprising:
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a catheter comprising a flexible torque shaft adapted to extend through the patient'"'"'s vasculature, the torque shaft having a distal end portion coupled to the prosthetic valve; and a valve sheath configured to receive the valve in a radially compressed state when coupled to the distal end portion of the torque shaft for delivery to the heart through the patient'"'"'s vasculature; wherein rotation of the torque shaft is effective to cause relative longitudinal movement between the sheath and the valve to advance the valve from the sheath for deployment in the heart. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A heart-valve delivery apparatus for delivering a prosthetic, stented heart valve via a patient'"'"'s vasculature, comprising:
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at least one elongated catheter having a distal end portion; and a valve-retaining mechanism coupling the valve to the distal end portion of the catheter; wherein the retaining mechanism comprises a first fork and a second fork, each fork having a plurality of angularly spaced prongs, each prong of the first fork cooperating with a corresponding prong of the second fork to form a releasable connection with the stent of the valve, the second fork being movable relative to the first fork to release each connection formed by the prongs and the stent. - View Dependent Claims (16, 17, 18, 19)
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20. A prosthetic heart valve for implantation at an implantation site having an annulus, the valve comprising:
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a radially expandable and compressible support frame comprising a plurality of strut members interconnected to each other to form a mesh structure comprising an inflow end and an outflow end, the mesh structure comprising a distended intermediate portion having a first diameter at a first location, the intermediate portion tapering in a direction toward the inflow end to form an inflow end portion having a second, smaller diameter at a second location; and plural leaflets having respective inflow end portions and outflow end portions, the inflow end portions of the leaflets being secured to the inside of the mesh structure at the inflow end portion of the mesh structure, and the outflow end portions of the leaflets defining angularly spaced commisures that are secured to the inside of the mesh structure at the outflow end of the mesh structure. - View Dependent Claims (21, 22)
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Specification