Antegrade cardioplegia catheter and method

Details Antegrade cardioplegia catheter and method Antegrade cardioplegia catheter and method

A - Human Necessities

61

M

A61M 29/00 (2006.01) A61M 25/10 (2006.01) A61M 25/00 (2006.01) A61M 29/02 (2006.01)

Patent

CA 2288906

A cardioplegia catheter (20) is configured to extend into the ascending aorta with a proximal portion of the shaft (26) extending into a left chamber of the heart through the aortic valve, and out of the heart through a penetration in a wall thereof. The cardioplegia catheter has an occlusion member (28) thereof. The cardioplegia catheter has an occlusion member (28) configured to occlude the ascending aorta between the brachycephalic artery, and the coronary ostia. An arterial return cannula delivers oxygenated blood to the arterial system downstream of the occlusion member, while cardioplegia fluid is delivered through a lumen in the cardioplegia catheter (20) upstream of the occlusion member to induce cardioplegia arrest.

Ce cathéter (20) destiné à provoquer une cardioplégie est conçu pour se déployer dans l'aorte descendante, une partie proximale de la tige (26) se déployant dans une cavité gauche du coeur par la valvule sigmoïde et sortant du coeur par une perforation pratiquée dans une paroi cardiaque. Ce cathéter possède un élément d'occlusion (28) destiné à obturer l'aorte descendante entre l'artère brachycéphale et les orifices coronaires. Une canule artérielle de retour alimente en sang oxygéné le système artériel, en aval de l'élément d'occlusion, tandis qu'un fluide à cardioplégie est administré par le biais d'une lumière située dans le cathéter (20) et ce, en amont de l'élément d'occlusion afin de provoquer cette cardioplégie.

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