Patent ID: 6544197
Filing Date: 2003-04-08
Classification: A61M

Abstract:
A composite guidewire including:a core of super elastic material, the core having a distal portion and a proximal portion; a coupling tube extending over the proximal portion of the core, the tube having a distal end and a proximal end, the coupling tube being adapted to engage the core at various locations so as to prevent rotational and axial movement of the coupling tube with respect to the core; a safety wire of a non-super elastic material overlying the core, the safety wire having a distal end that extends to the distal end of the core and a proximal end that extends beyond the distal end of the coupling tube to an attachment location adjacent to a distal end of the coupling tube; a coil engaged over the distal portion of the core, the coil having a distal end that attaches to the safety wire and a proximal end that engages a distal end of the coupling tube, the coil overlying the safety wire; and a tip attached to the distal end of said coil and the distal end of said safety wire.