CATHETER FOR TREATING IRREGULAR HEART PULSE

摘要

A catheter for treating irregular heart pulse comprises a catheter shaft of a double-cylinder structure where an inner cylinder shaft is slidably inserted in an outer cylinder shaft, a balloon installed so as to straddle between th e tip portion of the inner cylinder shaft and the tip portion of the outer cylinder shaft, a pair of high frequency current-carrying electrodes of whic h at least one electrode is provided inside the balloon, and a temperature sensor for monitoring the temperature in the balloon. The front edge portion of the balloon at least in a deflated state is projected to more forward tha n the tip portion of the inner cylinder shaft. Alternatively, a tube that is more flexible than the inner cylinder shaft is provided on the tip portion o f the inner cylinder shaft.