Guidewire and ablation catheter system with balloon

A - Human Necessities – 61 – M

Patent

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Details

A61M 25/01 (2006.01) A61B 18/12 (2006.01)

Patent

CA 2760303

Provided is a guide wire for an ablation catheter with a balloon in order to prevent the tip of the guide wire from being mistakenly heated when ablation treatment is performed using the ablation catheter with the balloon and the guide wire. Specifically provided is a guide wire, wherein a deformed portion formed by bending and/or curving the guide wire is located in the region of 20-100 mm from the tip in the longitudinal direction of the guide wire, and in the deformed portion, the shortest distance between the central axis in the longitudinal direction of the guide wire and a point that is the farthest in the direction perpendicular to the central axis is longer than or equal to the minimum inside diameter of a lumen of a catheter shaft of an ablation catheter with a balloon used in combination with the guide wire, and shorter than or equal to 40 mm.

L'invention porte sur un fil-guide pour un cathéter d'ablation avec un ballonnet afin d'empêcher la pointe du fil-guide d'être chauffée par erreur lorsqu'un traitement d'ablation est effectué à l'aide du cathéter d'ablation avec le ballonnet et le fil-guide. De façon précise, l'invention porte sur un fil-guide dans lequel une partie déformée, formée par courbure et/ou incurvation du fil-guide, se situe dans la région de 20à 100 mm par rapport à la pointe dans la direction longitudinale du fil-guide et, dans la partie déformée, la distance la plus courte entre l'axe central dans la direction longitudinale du fil-guide et un point qui est le plus éloigné dans la direction perpendiculaire à l'axe central est égale ou supérieure au diamètre intérieur minimal d'une lumière d'une gaine de cathéter d'un cathéter d'ablation avec un ballonnet, utilisé en combinaison avec le fil-guide, et égale ou inférieure à 40 mm.

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