| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an improved catheter accompanied with a bi-directional deflection ability. <P>SOLUTION: A catheter 10 decides a travel path of puller wires 32a and 32b which have a U-turn portion around pulleys 72a and 72b. A control handle of the catheter comprises a steering assembly which has a lever arm 70 carrying a pair of pulleys for simultaneously drawing corresponding puller wires to deflect the tip section of the catheter. The pulleys are rotatably mounted on opposing portions of the lever arm such that one pulley is moved distally as the other pulley is moved proximally when the lever arm is rotated. Since each puller wire is trained on a respective pulley, rotation of the lever arm causes the pulley that is moved proximally to draw its puller wire to deflect the tip section in the direction of the off-axis lumen in which the puller wire extends. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
