PROSTHETIC HEART VALVE AND DELIVERY APPARATUS

摘要

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.

主权项

1. An assembly for implanting a prosthetic heart valve, comprising:
a collapsible and expandable prosthetic heart valve comprising an annular frame and a valve member having a plurality of flexible leaflets configured for allowing blood flow in only one direction, wherein the valve member is mounted within the frame; and a delivery apparatus comprising:
a handle portion;at least one suture member;a first shaft having a first end portion and a second end portion, wherein the first end portion of the first shaft is coupled to the handle portion, and the suture member is coupled to and extends from the second end portion and forms a loop; anda second shaft having a first end portion and a second end portion, wherein the second shaft extends through the first shaft, the first end portion of the second shaft is movably coupled to the handle, and the second end portion of the second shaft is disposed adjacent the second end portion of the first shaft, wherein the suture member extends through an end portion of the frame, the second end portion of the second shaft extends through the loop of the suture member to releasably secure the suture member relative to the prosthetic heart valve, and the second shaft is axially movable to remove the second end portion of the second shaft from the loop, thereby releasing the suture member from the prosthetic heart valve.