GUIDEWIRE

• US 20120029476A1
• Filed: 06/27/2011
• Published: 02/02/2012
• Est. Priority Date: 08/02/2010
• Status: Abandoned Application

• Current Assignee: Asahi Intecc Company Limited
• Original Assignee: Asahi Intecc Company Limited
• Inventors: KANAZAWA, Yuuya
• Application Number:
  US13/169,535
• Publication Number:
  US 20120029476A1
• Time in Patent Office: Days
• US Class Current: 604/528
• CPC Class Codes: A61M 2025/09083 having a coil around a core
• CPC Class Codes: A61M 2025/09175 having specific characteristics at the distal tip
• CPC Class Codes: A61M 25/09 Guide wires

Abstract

A guidewire includes a core shaft and a coil body wound around an outer periphery of the core shaft. A distal end portion of the core shaft and a distal end portion of the coil body are fixed to each other with a most distal end portion. The coil outer diameter of the coil body in the most distal end portion is nonuniform.

Claims

1. A guidewire comprising:

a core shaft;

a coil body wound around an outer periphery of the core shaft; and

a most distal end portion formed by fixing a distal end portion of the core shaft and a distal end portion of the coil body to each other,

wherein the coil outer diameter of the coil body in the most distal end portion is nonuniform.

2. The guidewire according to claim 1,

wherein the coil outer diameter of the coil body in the most distal end portion decreases in a distal direction.

3. A guidewire comprising:

a core shaft;

an outer coil body wound around an outer periphery of the core shaft;

an inner coil body located inside the outer coil body and wound around an outer periphery of the core shaft; and

a most distal end portion formed by fixing a distal end portion of the core shaft, a distal end portion of the outer coil body, and a distal end portion of the inner coil body to one another,

wherein at least one of a coil outer diameter of the outer coil body and a coil outer diameter of the inner coil body in the most distal end portion is nonuniform.

4. The guidewire according to claim 3,

wherein the coil outer diameter of the outer coil body in the most distal end portion decreases in a distal direction.