Guide wire for catheters.

摘要

A guide wire (11) comprising an elongate flexible cylindrical element (12) formed of metallic material having high torsional capability (e.g. stainless steel) and having a proximal portion having a diameter ranging from .008 to .02 inch (0.2 1 0.51 mm) and a distal portion having a diameter of less than .007 inch (0.18 mm). It also comprises a first coil (13) formed of metallic material (e.g. stainless steel) and secured to the distal portion and a second coil (16) formed of a material which is different from the material of which the first coil (13) is formed and which is substantially radiopaque (e.g. a platinum alloy) secured to the distal extremity of the first coil (13). In addition, it comprises a tip (19) having a rounded conformation secured to the distal extremity of the second coil (16).