REPLACEMENT PROSTHETIC HEART VALVES

摘要

A two-stage or component-based valve prosthesis that can be quickly and easily implanted during a surgical procedure is provided. The prosthetic valve comprises a support structure that is deployed at a treatment site. The prosthetic valve further comprises a valve member configured to be quickly connected to the support structure. The support structure may take the form of a stent that is expanded at the site of a native valve. If desired, the native leaflets may remain and the stent may be used to hold the native valve open. In this case, the stent may be balloon expandable and configured to resist the powerful recoil force of the native leaflets. The support structure is provided with a coupling means for attachment to the valve member, thereby fixing the position of the valve member in the body. The valve member may be a non-expandable type, or may be expandable from a compressed state to an expanded state. The system is particularly suited for rapid deployment of heart valves in a conventional open-heart surgical environment.

主权项

1. A replacement prosthetic heart valve, comprising:
an expandable anchoring member sized to contact a heart valve annulus in an expanded state and defining a lumen having an inner diameter, the anchoring member having a circular cross-section and a length such that the anchoring member may be expanded within a native valve annulus to the push aside valvular leaflets of the native valve; and a one-way valve member comprising a non-expandable/non-collapsible support frame and defining an exterior dimension sized to fit within the lumen of the anchoring member, the valve member and anchoring member being configured to engage each other and hold the valve member within the lumen.