| 摘要 |
An elongate steerable implement is disclosed, which may be either a steerable guidewire or catheter for coronary angioplasty applications. A floppy steerable tip on a steering region at the distal end of the implement and a control device at the proximal end are connected by means of a plurality of axially movable deflection wires extending throughout the implement. Manipulation of the control permits deflection of the steering region throughout a full 360 DEG range of motion about the axis of the implement, without axial rotation or "torquing" thereof. In another embodiment, a steering ribbon is disclosed which permits steering by lateral deflection of the tip into a deflected or bent position and then permits straightening the tip back to its original position.
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