Guide or diagnostic catheter for right coronary artery

A - Human Necessities – 61 – M

Patent

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Details

A61M 25/00 (2006.01) A61M 25/092 (2006.01)

Patent

CA 2431508

A torqueable, three-dimensionally preformed guide or diagnostic catheter to selectively engage the ostium (32) of a right coronary artery (36) in a human includes: a torque-transmitting proximal shaft that receives manipulation by a user outside a human body in which the catheter is used; and a distal shaft that is responsive to torque transmitted by the proximal shaft. The distal shaft (8) also includes a preformed support section having at least a segment that abuts a posterior interior surface of the ascending aorta of the human body. The distal shaft (8) also includes a preformed ostium entry section extending from the support section. In one implementation, the ostium entry section transitions from the support segment abutting the aortic wall to a distal tip (22) end by way of at least two angles, which provide smoother transition than a single sharp angle.

L'invention concerne un guide tridimensionnel préformé susceptible d'être soumis à un couple ou un cathéter de diagnostic permettant de pénétrer sélectivement la fente de l'artère coronaire droite chez un humain. L'instrument comprend une tige proximale à transmission de couple manipulée par un utilisateur de l'extérieur du corps et dans laquelle le cathéter est utilisé, ainsi qu'une tige distale répondant au couple transmis par la tige proximale. La tige distale comprend une partie support préformée comportant au moins un segment qui aboutit à une surface intérieure postérieure de l'aorte ascendante du corps humain. La tige distale comprend également une partie d'entrée de fente préformée s'étendant de la partie support. Dans un mode de réalisation, la partie d'entrée de fente s'étend du segment support aboutissant à la paroi aortique à une extrémité distale au moyen d'au moins deux angles qui fournissent une transition plus douce qu'un angle aigü unique.

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