Balloon dissector with improved visualization

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/00 (2006.01) A61B 17/94 (2006.01)

Patent

CA 2345056

An expansible tunneling apparatus and associated methods for creating an anatomic working space for a surgical procedure. Various embodiments of one and two piece apparatus that permit laparoscopic observation both during tunneling and during subsequent balloon dissection are disclosed. In a disclosed one piece embodiment, a tubular member has a bore extending therethrough and an open distal end. A lip is formed in the distal end of the tubular member to capture the distal tip of a laparoscope that is inserted into the tubular member to permit observation of the procedure both during tunneling to a desired location and during subsequent balloon inflation. An elongated neck of the balloon is secured to the tunneling member. The elongated neck permits the tubular member to be withdrawn slightly from the balloon after inflation to facilitate observation. After the balloon has been advanced to the desired location in the body it is inflated through a balloon inflation lumen to cause the balloon to dissect tissue and create an operating space. Various balloon constructions and a reusable design are also disclosed.

La présente invention concerne un appareil pour tunnellisation gonflable et des techniques associées permettant de créer un espace anatomique de travail pour une opération chirurgicale. Cette invention concerne divers modes de réalisation d'appareil en une et deux pièces qui permettent l'observation laparoscopique pendant la tunnellisation et pendant la dissection. Dans un mode de réalisation en une pièce, une partie tubulaire possède un alésage qui traverse l'intérieur de cette partie et une extrémité distale. Une lèvre formée dans cette extrémité distale de la partie tubulaire permet de capturer la pointe distale d'un laparoscope inséré dans la partie tubulaire, de façon à permettre d'observer l'opération pendant la tunnellisation vers une localisation souhaitée et pendant le gonflage du ballonnet qui s'ensuit. Un goulot profilé du ballonnet est fixé sur la partie de tunnellisation. Ce goulot profilé permet de retirer délicatement la partie tubulaire du ballonnet après le gonflage afin de faciliter l'observation. Après avoir avancé le ballonnet jusqu'à la localisation souhaitée dans l'anatomie, on le gonfle par un lumen de gonflage de ballonnet afin de séparer les tissus et créer un espace opératoire. Cette invention concerne diverses fabrications de ballonnet et une conception réutilisable.

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