Collapsible/expandable prosthetic heart valves with native calcified leaflet retention features

摘要

A prosthetic heart valve is circumferentially collapsible for less invasive delivery into a patient. The valve re-expands to operating size at the implant site in the patient. A frame structure of the valve includes restraining structure that can help to push one or more of the patient's native heart valve leaflets radially outwardly so that this native leaflet tissue does not interfere with the operation or service life of the prosthetic valve.

主权项

1. A prosthetic heart valve comprising:
an annular frame that is adapted for (1) delivery into a patient's native heart valve annulus in a circumferentially collapsed condition, and (2) circumferential reexpansion when in the annulus, the frame having an inflow end having an inflow diameter adjacent an annulus portion and an outflow end having an outflow diameter greater than the inflow diameter, the annular frame further including a plurality of struts, at least some of the plurality of struts forming at least two rows of cells adjacent the annulus portion; a leaflet structure disposed in the frame; and at least two commissure members circumferentially spaced apart, each of the at least two commissure members having a first end coupled to two selected struts of one of the cells, and including three holes, the at least two commissure members being spaced apart from the inflow end and the outflow end.