| 摘要 |
A deflectable tip catheter comprises an elongated catheter body, a tip secti on carrying electrodes at the distal end of the catheter body and a control handle at the proximal end of the catheter body. The catheter body has a central lumen and the tip section has a pair of off axis lumens in communication with the central lume n of the catheter body. A compression coil is disposed in the central lumen of the catheter body and is fixedly attached at its proximal and distal ends to the proximal and dist al ends of the catheter body by means of glue joints. A tunnel, formed by a short piece of tubing, is provided through each glue joint. A puller wire extends from the control handle, through the compression coil and into one off axis lumen of the tip section and is attached at is distal end to the wall of the tip section. Electrode lead wires pass from the centr al handle through the tunnels and central lumen of the catheter body and into the other off ax is lumen of the tip section and are electrically connected to separate electrodes.
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