Balloon catheter ablation system
AssigneeJapan Electel Inc.
InventorShutaro SATAKE
Life of this patent
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Abstract
Provided is a hot balloon catheter ablation system capable of achieving pulmonary vein isolation or ablation of atrial fibrillation in a safe and efficient manner. A highly directional pressure sensor 51 is provided coaxially in an anterior portion of a catheter shaft 1 within a balloon 6. As the result, there is monitored a pressing force against the balloon onto the tissue as well as a temperature of the balloon 6, impedances, potentials, and an energization time. Further, since the directional pressure sensor 51 is provided inside the balloon 6, there is monitored a pressing force from the balloon 6 onto the tissue with accuracy without being influenced by the swirls T of the liquid, thereby securing effective ablation of the target tissues.
Claims8
A balloon catheter ablation system comprising:
- a catheter shaft comprising an inner tube and an outer tube which are slidable to each other;
- a balloon provided between distal ends of the inner tube and the outer tube;
- a first electrode for delivery of radiofrequency current, a temperature sensor, and a directional pressure sensor, all of which being provided within the balloon;
- a radiofrequency generator, a thermometer, and a pressure gauge respectively connected to the electrode for delivery of radiofrequency current, the temperature sensor, and the directional pressure sensor via a first connecting wire;
- a solution transport path defined by the outer tube and the inner tube, the solution transport path being in communication with an inside of the balloon;
- a syringe for deflating and inflating the balloon and a vibration generator for agitating the inside of the balloon, the syringe and the vibration generator each connected to the solution transport path;
- a second electrode provided on the catheter shaft and the outside of the balloon;
- and
- an electric impedance measuring multimeter and a voltage amplifier, each connected to the second electrode via a second connecting wire.
Dependencies are inferred from the claim text.