| 主权项 |
1. A steerable catheter comprising:
a tube (2) having a proximal end (4), a distal end (5), and a lumen extending therebetween, said tube (2) having a first segment (2d ) proximate said distal end and second segment (2w ) that extends proximally from said first segment (2d ) toward said proximal end, a first pull wire (12) and a second pull wire (13) embedded within a wall of the tube, and extending from the distal end (5) to the proximal end (4) of the tube (2), said first and second pull wires comprising first and second wound segments (12w, 13w) which are wound about a longitudinal axis of the tube, with the first pull wire (12) wound in a first direction and the second pull wire (13) wound in the first direction, substantially in parallel with the first pull wire with the first wound segment (12w) and the second wound segment (13w) dispersed circumferentially about the longitudinal axis of the tube (2). |
