Patent ID: 8647339
Filing Date: 2014-02-11
Classification: A61B

Abstract:
1. A balloon catheter system comprising: a catheter shaft comprising an outer tube and an inner tube which are slidable to each other; a balloon provided between a distal end of said outer tube and a vicinity of a distal end of said inner tube; an electrode for delivery of radiofrequency current provided in a central portion of said balloon, an external radio frequency generator which supplies radiofrequency energy to said electrode for delivery of radiofrequency current through a lead wire to heat said balloon; an external thermometer which detects a temperature through a temperature sensor inside said balloon and a lead wire of said temperature sensor; a solution transport path formed between said outer tube and said inner tube, in communication with an inside of said balloon; an external vibration generator which applies a vibrational wave to an inside of said balloon through said solution transport path and generates swirls S inside said balloon to make temperature inside said balloon uniform; and a guide wire which guides said balloon to a target site, wherein said temperature sensor is separated from said electrode for delivery of radiofrequency current and is fixed to said distal end of said inner tube inside said balloon to detect the temperature of swirls flowing along an inner surface of said balloon, where a heat insulating material is interposed between said temperature sensor for detecting the temperature of swirls flowing along the inner surface of said balloon and said electrode for delivery of radiofrequency current provided in the central portion of said balloon.