VALVED AORTIC CONDUITS

摘要

A valved conduit including a bioprosthetic aortic heart valve connected to a tubular conduit graft forming an ascending aorta. The conduit graft may attach to the heart valve in a manner that facilitates a redo operation in which the valve is replaced with another valve. A sewing ring may be pre-attached to the inflow end of the graft, and then the valve connected to a delivery holder advanced into the graft and secured to the sewing ring. Dry bioprosthetic valves coupled with conduit grafts sealed with a bioresorbable medium can be stored with the delivery holder.

主权项

1. A valved conduit, comprising:
a subassembly of:
a conduit graft comprising a longitudinal tubular portion between an upper end and a lower end, the lower end having a collar portion; andan annular sewing ring comprising an inner core and an outer fabric covering, the sewing ring being positioned adjacent the lower end of the conduit graft whereby the collar portion contacts and is secured to an inner wall of the annular sewing ring;wherein the subassembly of the conduit graft and sewing ring is independently leak tested, a prosthetic heart valve having an inner support frame covered with fabric and defining a flow orifice and a plurality of leaflets extending inward from the support frame to ensure one-way blood flow through the heart valve, wherein the heart valve is positioned within the lower end of the conduit graft and the fabric covering the support frame extends downward in a tubular segment and is folded radially outward underneath the subassembly of the conduit graft and sewing ring and secured thereto with sutures; a holder attached to the heart valve and extending from the heart valve out of the upper end of the conduit graft.