Retaining mechanisms for prosthetic valves

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/24 (2006.01) A61M 29/00 (2006.01)

Patent

CA 2728273

Disclosed herein are representative embodi-ments of methods, apparatus, and systems used to deliver a prosthetic heart valve to a deficient valve. In one embodi-ment, for instance, a support stent is delivered to a position on the surface of the outflow side of a native heart valve of a patient, the support stent defining a support-stent interior. An expandable prosthetic heart valve is delivered into the native heart valve from the inflow side of the native heart valve and into the support-stent interior. The expandable prosthetic heart valve is expanded while the expandable prosthetic valve is in the support-stent interior and while the support stent is at the position on the surface of the out-flow side of the heart valve, thereby causing one or more of the native leaflets of the native heart valve to be frictionally secured between the support stent and the expanded pros-thetic heart valve.

L'invention concerne des modes de réalisation représentatifs de procédés, d'un appareil et de systèmes utilisés pour délivrer une valve cardiaque prothétique à une valve déficiente. Dans un mode de réalisation, par exemple, un stent de support est placé à une position sur la surface du côté d'écoulement d'une valve cardiaque native d'un patient, le stent de support définissant un intérieur de stent de support. Une valve cardiaque prothétique extensible est placée à l'intérieur de la valve cardiaque native à partir du côté de flux entrant de la valve cardiaque et à l'intérieur du stent de support. La valve cardiaque prothétique extensible est déployée lorsqu'elle se trouve à l'intérieur de stent de support et pendant que ce dernier se trouve à la position sur la surface du côté d'écoulement de la valve cardiaque, ce qui amène la fixation par friction d'une ou de plusieurs valves natives de la valve cardiaque native entre le stent de support et la valve cardiaque prothétique extensible.

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