Vascular implant

摘要

A vascular implant for replacing a native heart valve comprises a self expanding stent supporting a valve body having leaflets. The stent preferably comprises an anchoring structure configured to prevent the implant from passing through the valve annulus. For delivery, the implant is compacted within a delivery device and secured at one end. During delivery the implant is partially released from the delivery device, and positioning of the implant can be verified prior to full release. The implant can be at least partially resheathed and repositioned if desired.

主权项

1. A replacement mitral heart valve comprising:
an expandable frame comprising a first portion configured to be positioned in the left atrium of the heart and a second portion configured to be positioned inside of the native mitral valve annulus, wherein the frame comprises a D-shaped cross-section to facilitate engagement with the native mitral valve annulus; a plurality of anchors extending from the frame, wherein the plurality of anchors are sized to contact a native mitral valve on a ventricular side of the native mitral valve annulus, wherein each of the plurality of anchors extends generally toward the first portion of the frame when the frame is in an expanded configuration, and wherein the plurality of anchors are approximately equally spaced around an entire perimeter of the frame; and a valve body attached to the frame; wherein the first portion comprises an anchoring feature configured to contact the native mitral valve on an atrial side of the native mitral valve annulus; and wherein the replacement mitral heart valve is configured such that, after the replacement mitral heart valve has been delivered to a native mitral valve and expanded, the anchoring feature contacts tissue on the atrial side of the native mitral valve annulus and at least some of the plurality of anchors contact tissue on the ventricular side of the native mitral valve annulus.