Catheter for the transvascular implantation of prosthetic...

Details Catheter for the transvascular implantation of prosthetic... Catheter for the transvascular implantation of prosthetic...

A - Human Necessities

61

F

A61F 2/84 (2006.01) A61F 2/24 (2006.01)

Patent

CA 2595233

The invention relates to a catheter for the transvascular implantation of prosthetic heart valves, in particular comprising self-expanding anchorage supports (10), which allow a minimally invasive implantation of prosthetic heart valves. The aim of the invention is to reduce the risk to the patient during the implantation. To achieve this, according to the invention a prosthetic heart valve comprising anchorage supports is temporarily housed in a folded form in a cartridge-type unit (4) during the implantation. The cartridge-type unit can be fixed on the proximal end of a guide system (1), which comprises a flexible region (9) that can be guided through the aorta. Actuating elements (2, 3) run through the interior of the hollow guide system, said elements permitting sections of the cartridge-type unit to be displaced radially about their longitudinal axis and/or laterally in a proximal direction, thus allowing individual sections of the anchorage support and the associated prosthetic heart valve to be sequentially released.

L'invention concerne un cathéter destiné à l'implantation transvaculaire de valvules cardiaques. Ce cathéter comprend notamment des pattes d'ancrage (10) auto-expansibles qui permettent une implantation à invasion minimale des prothèses de valvules cardiaques. L'invention vise à réduire les risques liés à l'imlantation pour le patient. A cet effet, une prothèse de valvule cardiaque dotée de pattes d'ancrage est, lors de l'implantation, logée temporairement dans une unité cartouche (4) dans une forme pliée. L'unité cartouche est fixée de manière proximale à un système de guidage (1). Ce système de guidage présente une zone flexible (9) destinée à être insérée dans une aorte. Des éléments de commande (2, 3), guidés dans la cavité du système de guidage creux, permettent de déplacer des parties de l'unité cartouche radialement autour de leur axe longitudinal et/ou latéralement dans la direction proximale de telle façon que des pièces isolées des pattes d'ancrage et des prothèses de valvules cardiaques puissent être séquentiellement libérées. .

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