| 主权项 |
1. A tissue-removing catheter for removing tissue from a wall of a body lumen during a cutting operation thereof, the tissue-removing catheter comprising:
an elongate catheter body configured for insertion into the body lumen, the catheter body having opposite distal and proximal portions, and a longitudinal axis extending between the distal and proximal portions, the catheter body having a jogged portion configured to apply an urge force against the body lumen wall and urge a portion of the catheter body toward a portion of the body lumen wall; a tissue-removing element for removing tissue from the body lumen during the cutting operation, the tissue-removing element being located generally adjacent the portion of the catheter body that is urged toward the body lumen wall by the jogged portion; an urging mechanism configured to selectively apply a compressive load to the catheter body to adjust the bending stiffness of the jogged portion and the urge force applied by the jogged portion, wherein the catheter body is configured to retain the shape of the jogged portion when the urging mechanism is applying a compressive load to the catheter body. |
