GUIDE WIRE FOR USE IN RE-CANALISING A VASCULAR OCCLUSION IN A HUMAN OR ANIMAL SUBJECT

摘要

A guidewire (1) for re-canalizing a vascular occlusion comprises a core wire (5) which terminates at its distal end (4) in a terminal member (7) for opening the occlusion. A helical coil sleeve (10) extends around the core wire (5) from the terminal member (7) to a location (11) along the core wire (5). The terminal member (7) defines first and second planar surface portions (13, 14), which converge towards a distal transversely extending leading edge portion (8). In use, as the terminal member (7) is urged through the vascular occlusion, the first and second surface portions (13, 14) act on the occlusion to form an opening therethrough. A distal portion (28) of the core wire (5) is of spade-like configuration for facilitating bending thereof for directing the terminal member (7) out of a central major plane (35) defined by the distal portion (28) for facilitating aligning of the terminal member (7) with a branched vessel of the vascular system.

主权项

1. A guide wire, comprising:
a) a core wire extending between a proximal core wire end and a distal core wire end, wherein the core wire defines a longitudinally extending main central axis and a maximum outer transverse cross-sectional area; and b) a terminal member connected to and extending axially from the distal end of the core wire, wherein the terminal member has opposed first and second planar surfaces that converge toward each other as they extend distally along the main central axis to form a radiused leading edge, and wherein the first and second planar surfaces are joined by opposed third and fourth radiused surfaces, the third and fourth radiused surfaces being convex in a transverse direction relative to the central axis, wherein the leading edge of the terminal member extends to and meets with the third and fourth radiused convex surfaces.