DEFLECTABLE CATHETER

摘要

An improved, steerable electrophysiology catheter (110) featuring an elongated wound wire coil (72) extending through the catheter body. The coil is constructed to enable the catheter body to withstand reactive compressive load without distorsion during application of tension on a pull wire (54) extending through the catheter body and to transmit torque from the proximal end of the catheter body to the distal tip thereof to enhance fidelity of rotational positioning of the distal tip in response to rotational orientation of the proximal end of the catheter. The coil is in frictional torque-transmitting relationship with the interior of the catheter body substantially along the common length of the catheter body when it is bent. The catheter may be equipped with augmented throw for one-handed operation.