Guiding member with deflectable tip

Abstract From the Canadian patent

The invention is directed to a guiding member for vascular catheters, particularly dilatation catheters for angioplasty procedures having a deflectable tip. The guiding member generally includes an elongated core wire having a tapered distal portion a coil encasing at least part of the tapered distal portion of a core wire. The coil has an expanded section, and a reference member disposed therein which is secured to the coil proximally and distally of the expanded coil section. The core wire is secured to the coil at a location distally of the expanded section but proximally to the distal tip of the coil. Relative axial movement between the core wire and the coil causes expansion or …