Method for making coiled, perfusion balloon catheter

• US 5,252,159 A
• Filed: 01/04/1993
• Issued: 10/12/1993
• Est. Priority Date: 10/25/1991
• Status: Expired due to Term

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Inventors: Arney, Michelle
• Primary Examiner(s): Ball, Michael W.
• Assistant Examiner(s): Maki, Steven D.
• Application Number:
  US08/000,133
• Time in Patent Office: 281 Days
• Field of Search: 156/143, 156/144, 156/166, 156/169, 156/172, 156/173, 156/175, 156/296, 156/322, 156/294, 264/103, 264/573, 604/96, 604/97, 604/98, 604/99, 604/100, 604/101, 604/102, 604/103, 604/280, 604/282, 606/192, 606/193, 606/194, 29/423, 29/433, 29/435, 29/456
• US Class Current: 156/169
• CPC Class Codes: A61M 2025/1097 with perfusion means for enabling blood circulation only while the balloon is in an inflated state, e.g. temporary by-pass within balloon
• CPC Class Codes: A61M 25/1002 characterised by balloon shape A61M25/1006, A61M25/1009 take precedence
• CPC Class Codes: A61M 25/104 used for angioplasty
• CPC Class Codes: Y10T 29/4981 Utilizing transitory attached element or associated separate material
• CPC Class Codes: Y10T 29/49881 of separate helix [e.g., screw thread]

Abstract

A perfusion balloon catheter includes an inflatable balloon formed by a series of loops of a flexible, inflatable tube in a generally cooperative tubular shape. The loops are supported by a coiled support member and are locked within the coiled support member by a wire retainer. The cooperative tubular shape of the individual loops perform to provide an inflatable cooperative outer surface of the balloon and a perfusion passage within the balloon.

Claims

1. A method for making a perfusion balloon catheter, the method comprising:

inserting a length of uninflated flexible tube into an end of a coiled support member;

threading the tube through a side of the coiled support member;

repeatedly wrapping the tube around the coiled support member and a support mandril, which is positioned adjacent to the coiled support member, to create a series of cooperative, side-by-side loops of the tube;

sealing a first end of the tube at a desired distance from a first loop of the tube;

inserting a retainer through a length of the coiled support member and between a portion of the coiled support member and each tube loop;

heating the tube and applying fluid pressure to a second end of the tube to inflate the loops;

cooling the tube;

removing the fluid pressure;

removing the support mandril; and

connecting the tube to a distal end of a catheter shaft.

2. The method of claim 1 wherein connecting the tube to the distal end of the catheter shaft comprises:

inserting the second end of the tube and a portion of the retainer into a lumen at the distal end of the shaft; and

bonding the tube and the retainer to the distal end of the shaft.

3. The method of claim 2 wherein connecting the tube to the distal end of the catheter shaft further comprises:

inserting a portion of the coiled support member into the lumen at the distal end of the shaft; and

bonding the coiled support member to the distal end of the shaft.

4. The method of claim 1 and further comprising:

connecting a guide wire support to the wire coil.

5. The method of claim 4 wherein the guide wire support is connected to a distal end of the coiled support member.

6. The method of claim 4 wherein the guide wire support includes a guide tube which defines a guide wire lumen.

7. The method of claim 6 wherein the guide tube extends through the coiled support member.

8. The method of claim 7 and further comprising:

inserting the guide tube into the coiled support member after inserting the retainer.

9. The method of claim 7 and further comprising:

inserting the guide tube into the coiled support member before repeatedly wrapping the tube around the coiled support member and the support mandril.