CATHETER HAVING ULTRASONIC DEVICE

摘要

A catheter (18) includes a piezoelectric transducer (24) mounted to the distal end (20). The band electrode (26), proximal to the piezoelectric transducer (24), may be used either individually or simultaneously with the tip electrode (22). In one embodiment, the piezoelectric transducer has the shape of a cylinder and, in another embodiment, a convex shape with a mounting flange. In the cylindrical shape, a plurality of surface mounted temperature sensors (28) are disposed within the piezoelectric transducer (24). The sensors (28) are electrically insulated and a sealing technique prevents the leakage of body fluids from penetrating the interior of the catheter through the sensor bores. The cylindrical transducer is supported on mounting members so that it is accurately mounted and sealed while, at the same time, the material used does not significantly dampen the transducer (24).