Method and instrument for establishing the receiving site of...

A - Human Necessities – 61 – B

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A61B 17/11 (2006.01) A61B 17/32 (2006.01) A61B 17/00 (2006.01) A61B 17/02 (2006.01) A61B 17/22 (2006.01) A61B 17/30 (2006.01) A61B 18/24 (2006.01)

Patent

CA 2179508

In a method for locating an ar- terial construction and performing an arteriotomy distally thereof, especially with a view to establishing a bypass connection between the aorta (52) and a part of the coronary artery (51) dis- tally of a constriction in the artery, the most important steps are: (a) locating the site of the constriction in the artery (51), preferably by using an instrument (9) with a head (3) carrying an ultra- sonic transducer array (not shown), and (b) making an incision in the artery (51) closely distally of the constriction, preferably by using a knife (not shown) placed in said head (3). By proceeding in this manner, it is possible to perform the initial steps of a coronary bypass operation swiftly and accurately on a beating heart.

Dans un procédé de localisation d'une constriction artérielle et de réalisation d'une artériotomie en position distale par rapport à ladite constriction, particulièrement dans le but d'effectuer un pontage entre l'aorte (52) et une partie de l'artère coronaire (51) en position distale par rapport à une constriction de l'artère, les étapes les plus importantes sont: (a) localisation du site de constriction de l'artère (51) de préférence au moyen d'un instrument (9) pourvu d'une tête (3) portant un ensemble transducteur à ultrasons (non représenté par la figure), et (b) pratique d'une incision dans l'artère (51) à proximité d'une position distale par rapport à la constriction, de préférence au moyen d'un bistouri (non représenté par la figure) placé dans ladite tête (3). Ceci permet de réaliser les étapes initiales d'une opération de pontage coronaire avec rapidité et précision sur un coeur qui continue à battre.

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