INSERTION ASSISTING TOOL FOR CATHETER, CATHETER ASSEMBLY, AND CATHETER SET

• US 20090264865A1
• Filed: 06/25/2009
• Published: 10/22/2009
• Est. Priority Date: 12/11/2006
• Status: Abandoned Application

• Current Assignee: Goodman Company LP (Daikin Industries Ltd)
• Original Assignee: Goodman Company LP (Daikin Industries Ltd)
• Inventors: KAWAI, Jun
• Application Number:
  US12/491,847
• Publication Number:
  US 20090264865A1
• Time in Patent Office: Days
• US Class Current: 604/528
• CPC Class Codes: A61M 2025/0059 having means for preventing the catheter, sheath or lumens from collapsing due to outer forces, e.g. compressing forces, or caused by twisting or kinking
• CPC Class Codes: A61M 2025/0681 Systems with catheter and outer tubing, e.g. sheath, sleeve or guide tube
• CPC Class Codes: A61M 25/007 Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked
• CPC Class Codes: A61M 25/0105 Steering means as part of the catheter or advancing means; Markers for positioning systems for detection of markers A61B

Abstract

An insertion assisting tool inserted into a catheter and positioned ahead of the catheter is provided so as to assist an insertion of the catheter. The insertion assisting tool includes: a distal end portion whose end is tapered and which has a guide wire lumen opening at a tip end and a proximal end of the distal end portion; and a shaft extending from a part of a proximal-end surface of the distal end portion to a proximal end of the insertion assisting tool.

Claims

1. An insertion assisting tool inserted into a catheter and positioned ahead of the catheter so as to assist an insertion of the catheter, the insertion assisting tool comprising:

a distal end portion whose end is tapered and which has a guide wire lumen opening at a tip end and a proximal end of the distal end portion; and

a shaft extending from a part of a proximal-end surface of the distal end portion to a proximal end of the insertion assisting tool.

2. An insertion assisting tool according to claim 1, further comprising a soft tip which is softer than the distal end portion and arranged at the tip end of the distal end portion, wherein the soft tip has a guide wire lumen in communication with the guide wire lumen of the distal end portion.

3. A catheter assembly comprising:

an insertion assisting tool of claim 1; and

a catheter having a distal-end opening in which a proximal-end edge of the distal end portion of the insertion assisting tool can be held.

4. A catheter assembly according to claim 3, wherein the distal end portion of the insertion assisting tool is harder than the distal end portion of the catheter.

5. A catheter assembly according to claim 3, wherein a side hole is provided at a distal end portion of the catheter.

6. A catheter set comprising:

a catheter assembly of claim 3; and

a guiding catheter configured to receive and guide the catheter assembly.