Catheter systems and methods for crossing vascular occlusions

Details Catheter systems and methods for crossing vascular occlusions Catheter systems and methods for crossing vascular occlusions

A - Human Necessities

61

M

A61M 25/00 (2006.01)

Patent

CA 2528959

Interventional catheter-based systems and methods are described herein for use in generating an initial pathway through vascular occlusions. The catheter systems generally include two elements. A first element is a Blunt Dissection Catheter including a manually actuated assembly located at the distal tip of the Blunt Dissection Catheter that performs blunt dissection in the vascular occlusion to produce a dissection track, or small pathway through the occlusion. The second element is a Sheath Catheter that serves as a conduit within which the Blunt Dissection Catheter is freely advanced, retracted and rotated. The first and second elements are used in some combination to cross vascular occlusions in both the coronary and peripheral vasculature.

La présente invention concerne des systèmes et des procédés interventionnels utilisant des cathéters qui sont destinés à être utilisés pour former un passage initial à travers des occlusions vasculaires. Les systèmes de cathéter comprennent en général deux éléments. Un premier élément est un cathéter de dissection émoussé comprenant un ensemble à commande manuelle situé à l'extrémité distale du cathéter de dissection émoussé qui effectue la dissection émoussée dans l'occlusion vasculaire pour produire une piste de dissection ou un petit passage dans l'occlusion. Le deuxième élément est un cathéter à gaine qui sert de conduit dans lequel le cathéter de dissection émoussé avance, recule et tourne librement. Les premier et deuxième éléments sont utilisés dans certaines combinaisons pour traverser des occlusions vasculaires aussi bien au niveau coronaire que périphérique.

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