초록 ▼

The novel guidewire includes beads displaced longitudinally at the distal end of a core wire. The beads are separated by a gap distance. The core wire can flex at points within the gaps between beads which allows the dial end of the guidewire to bend at branch junctions and to conform to the curvatu

The novel guidewire includes beads displaced longitudinally at the distal end of a core wire. The beads are separated by a gap distance. The core wire can flex at points within the gaps between beads which allows the dial end of the guidewire to bend at branch junctions and to conform to the curvature in the vessel duct. The beads can be fixed to the core wire or they can move freely along the distal portion. Also, beads freely sliding along the core wire can be compressed against each other to control the degrees of stiffness and curvature of the distal portion by manipulating the proximal end of the guidewire outside the body during deployment of the guidewire. An insertion tube is provided for initially feeding the flexible guidewire end into the body duct.

대표청구항 ▼

[ I claim:] [1.] A catheter guidewire having a leading end, the guidewire comprising:a core wire adapted to insert into the lumen of a duct of a body, the core wire having a proximal end adapted to remain outside the body, a distal end, and a core diameter; anda beaded portion appended to the distal

[ I claim:] [1.] A catheter guidewire having a leading end, the guidewire comprising:a core wire adapted to insert into the lumen of a duct of a body, the core wire having a proximal end adapted to remain outside the body, a distal end, and a core diameter; anda beaded portion appended to the distal end forming the leading end of the guidewire, the beaded portion comprisinga plurality of spheroidal beads sequentially disposed along the core wire each bead having a bead length in a direction axial to the core wire and wherein adjacent beads are axially spaced apart by a gap distance; anda blunt forward end.