Intravascular Obstruction Removing Tool

• US 20080097498A1
• Filed: 11/29/2005
• Published: 04/24/2008
• Est. Priority Date: 11/29/2004
• Status: Abandoned Application

• Current Assignee: JMS Company Limited
• Original Assignee: JMS Company Limited
• Inventors: Hayashi, Shuro, Shimizu, Yasuhiro
• Application Number:
  US11/791,789
• Publication Number:
  US 20080097498A1
• Time in Patent Office: Days
• US Class Current: 606/159
• CPC Class Codes: A61B 17/00008 Vein tendon strippers tube strippers A61M1/83
• CPC Class Codes: A61B 17/3207 Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions A61B17/32037 takes precedence; endoscopic cutting instruments A61B17/320016
• CPC Class Codes: A61B 17/32075 Pullback cutting; combined forward and pullback cutting, e.g. with cutters at both sides of the plaque
• CPC Class Codes: A61B 2017/22034 for gripping the obstruction or the tissue part from inside
• CPC Class Codes: A61B 2017/22039 eccentric
• CPC Class Codes: A61B 2017/22097 Valve removal in veins
• CPC Class Codes: A61B 2017/320741 for stripping the intima or the internal plaque from a blood vessel, e.g. for endarterectomy
• CPC Class Codes: A61M 25/0043 characterised by structural features

Abstract

A removing tool 1 having a tubular member 2 and guide wire 3 inserted into a vessel. The tubular member 2 has a removing portion 5 for removing an intravascular obstruction by contacting to the intravascular obstruction. The outer circumferential plane of the removing portion 5 has a spirally projecting portion 10. The tubular member 5 has an operating portion 6 held by an operator for operating the removing portion 5. A guide wire 3 guides the removing portion 5 to the position where the intravascular obstruction is formed. The operating portion 6 is operated by the operator to move the removing portion 5 back and forth in the longitudinal direction of the vessel.

Claims

1. A removing tool for removing intravascular obstructions formed in a vessel of a living human body from an inner vessel wall, the removing tool comprising:

a tubular member having;

a removing portion inserted into the vessel for contacting to an intravascular obstruction to remove the intravascular obstruction from the inner vessel wall; and

an operating portion held and operated by an operator for operating the removing portion outside a living human body in a condition where the operating portion is connected to the removing portion and the removing portion has been inserted into the vessel; and

a guide member inserted into the tubular member to guide the removing portion to a position where the intravascular obstruction is formed in the vessel.

2. The removing tool for removing intravascular obstructions according to claim 1, wherein:

the operating portion is connected to suction means for applying a negative pressure to an interior of the operating portion; and

a place near the removing portion of the operating portion has a thorough hole communicating with an interior of the operating portion.

3. The removing tool for removing intravascular obstructions according to claim 1, wherein the tubular member has an extending portion extending to an exterior of the living human body in the condition where the removing portion is located in a position where the intravascular obstruction is formed in the vessel.

4. The removing tool for removing intravascular obstructions according to claim 3, wherein an end of the extending portion in a direction of insertion has a tapering plane tapering toward an end side.

5. The removing tool for removing intravascular obstructions according to claim 1, wherein an outer circumferential plane of the removing portion has a wire projecting from an outer circumferential plane to extend spirally.

6. The removing tool for removing intravascular obstructions according to claim 2, wherein the tubular member has an extending portion extending to an exterior of the living human body in the condition where the removing portion is located in a position where the intravascular obstruction is formed in the vessel.

7. The removing tool for removing intravascular obstructions according to claim 6, wherein an end of the extending portion in a direction of insertion has a tapering plane tapering toward an end side.

8. The removing tool for removing intravascular obstructions according to claim 2, wherein an outer circumferential plane of the removing portion has a wire projecting from an outer circumferential plane to extend spirally.

9. The removing tool for removing intravascular obstructions according to claim 3, wherein an outer circumferential plane of the removing portion has a wire projecting from an outer circumferential plane to extend spirally.

10. The removing tool for removing intravascular obstructions according to claim 4, wherein an outer circumferential plane of the removing portion has a wire projecting from an outer circumferential plane to extend spirally.