Apparatus for creating a channel between adjacent body lumens

Details Apparatus for creating a channel between adjacent body lumens Apparatus for creating a channel between adjacent body lumens

A - Human Necessities

61

B

A61B 17/11 (2006.01) A61B 17/22 (2006.01) A61B 17/32 (2006.01) A61B 17/34 (2006.01) A61B 17/00 (2006.01) A61B 18/14 (2006.01)

Patent

CA 2395246

Apparatus (10) for creating channels between adjacent blood vessels include a cutting element (22) fixed on a catheter (12) for creating a channel in a wall of a blood vessel. A clip (34) engages tissue thereunder for maintaining the cutting element (22) in contact with tissue being cut. Orientation markers (32, 33) may facilitate rotationally orienting the cutting element (22). The catheter (12) is advanced into a blood vessel, and a distal portion (24) of the catheter (12) is directed through a wall of the vessel towards an adjacent vessel until the cutting element (22) is in contact with tissue therebetween. The catheter (12) is directed axially along the vessel, thereby creating a channel in the tissue using the cutting element (22). In another embodiment, the apparatus (310) may include first and second elongated elements (326a, 326b) pivotably coupled to one another having an aperture-creating assembly (322) disposed between them.

L'invention concerne un appareil (10) destiné à créer des canaux entre des vaisseaux sanguins adjacents, comprenant un élément de découpage (22) fixé sur un cathéter (12), destiné à créer un canal dans la paroi d'un vaisseau sanguin. Une agrafe (34) permet de fixer le tissu et de maintenir l'élément de découpage (22) en contact avec le tissu à découper. Des repères d'orientation (32, 33) peuvent faciliter l'orientation de façon rotative de l'élément de découpage (22). Le cathéter (12) est avancé dans le vaisseau sanguin, et une partie distale (24) du cathéter (12) est dirigée à travers une paroi du vaisseau vers un vaisseau adjacent jusqu'à ce que l'élément de découpage (22) entre en contact avec le tissu. Le cathéter (12) est dirigé axialement le long du vaisseau, ce qui permet de créer un canal dans le tissu à l'aide de l'élément de découpage (22). Dans un autre mode de réalisation, l'appareil (310) peut comprendre un premier et un second élément allongé (326a, 326b) couplés pivotants l'un à l'autre, comprenant un ensemble (322) de création d'ouverture situé entre lesdits éléments allongés.

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