Patent ID: 9439725
Filing Date: 2016-09-13
CPC Classification: A61B

Claim Text:
1. A balloon ablation catheter comprising: an outer shaft in which a lumen penetrates in a longitudinal direction; an inner shaft in which a lumen penetrates in a longitudinal direction and inserted in the lumen of the outer shaft, a balloon fixed to said outer shaft, wherein said lumen of the outer shaft communicates with an inside portion of the balloon; a high-frequency-current-applying electrode arranged inside said balloon, which electrode is formed by coiling-a high-frequency-power-supplying lead wire that supplies high-frequency power from a power supply around said inner shaft; and a temperature sensor lead wire that supplies a measured signal to the power supply sandwiched and fixed between the coiled high-frequency-power-supplying lead wire and the inner shaft along the longitudinal direction of the inner shaft; and a thermocouple formed in the balloon and at a point where said high-frequency-power-supplying lead wire and said temperature sensor lead wire contact each other for the first time as seen from a posterior end side in the longitudinal direction; wherein the temperature sensor lead wire is fixed on the inner shaft by the coiled high-frequency-power-supplying lead wire and is inserted between the coiled high-frequency-power-supplying lead wire and the inner shaft, and said temperature sensor lead wire is in contact at a plurality of points with said coiled high-frequency-power-supplying lead wire and said shaft in the balloon.