BLOOD FLOW BLOCKING CATHETER

• US 20090192452A1
• Filed: 01/26/2009
• Published: 07/30/2009
• Est. Priority Date: 01/28/2008
• Status: Abandoned Application

• Current Assignee: Nipro Corporation
• Original Assignee: Asahikawa Medical College, Nipro Corporation
• Inventors: SASAJIMA, Tadahiro, Miyagawa, Katsuya
• Application Number:
  US12/359,633
• Publication Number:
  US 20090192452A1
• Time in Patent Office: Days
• US Class Current: 604/99.04
• CPC Class Codes: A61B 17/12136 Balloons
• CPC Class Codes: A61B 2017/22054 with two balloons
• CPC Class Codes: A61B 2017/22067 Blocking; Occlusion A61B2017/22054 takes precedence
• CPC Class Codes: A61M 2025/0004 having two or more concentrically arranged tubes for forming a concentric catheter system
• CPC Class Codes: A61M 2025/1052 for temporarily occluding a vessel for isolating a sector
• CPC Class Codes: A61M 25/1011 Multiple balloon catheters

Abstract

A blood flow blocking catheter, comprises: a puncture needle component having a puncture needle capable of puncturing a vein; and a sheath that covers said puncture needle component, and a balloon catheter that can be inserted into and removed from a lumen of the puncture needle component and has at its distal end a balloon that can block off blood flow. With the present invention, a balloon catheter can be easily inserted into a vein, and the balloon inflated, without making a large incision in the vein. Therefore, the temporary obstruction of blood flow with a balloon catheter can be carried out more easily, and this simplifies the surgery and makes it less invasive. Thus, it is possible to obtain a blood flow blocking catheter with which vascular anastomosis can be performed more safely and in less time.

Claims

1. A blood flow blocking catheter, comprising:

a puncture needle component having a puncture needle capable of puncturing a vein; and

a sheath component that covers said puncture needle component, and

a balloon catheter that can be inserted into and removed from a lumen of the puncture needle component and has at its distal end a balloon that can block off blood flow.

2. The catheter according to claim 1, wherein the balloon catheter has a plurality of the balloons which can be inflated individually.

3. The catheter according to claim 1, comprising an inner core that can be inserted into and removed from the lumen of the puncture needle component.

4. The catheter according to claim 3, wherein the inner core has a cut face with an angle that matches the distal end shape of the puncture needle.

5. The catheter according to claim 1, wherein a nonreturn valve is provided to the proximal end of the puncture needle component.

6. The catheter according to claim 1, wherein a nonreturn valve is provided to the proximal end of the sheath.