Low profile catheter for angioplasty and occlusion

• US 6,558,401 B1
• Filed: 09/12/2000
• Issued: 05/06/2003
• Est. Priority Date: 08/04/1998
• Status: Expired due to Fees

• Current Assignee: Medtronic Ave Incorporated (Medtronic Plc)
• Original Assignee: Medtronic PercuSurge, Inc. (Medtronic Plc)
• Inventors: Azizi, Gholam-Reza Zadno
• Primary Examiner(s): Dawson, Glenn K.
• Application Number:
  US09/659,274
• Time in Patent Office: 966 Days
• Field of Search: 606/1, 606/108, 606/159, 606/167, 606/191-200, 606/213, 604/96-1-1, 128/898
• US Class Current: 606/159
• CPC Class Codes: A61B 17/12022 Occluding by internal devices, e.g. balloons or releasable wires plugging an opening in the wall of an organ A61B17/0057; occluders for the cervical canal A61F6/146; vas deferens occluders A61F6/20
• CPC Class Codes: A61B 17/12109 in a blood vessel
• CPC Class Codes: A61B 17/12172 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• CPC Class Codes: A61M 2025/0004 having two or more concentrically arranged tubes for forming a concentric catheter system
• CPC Class Codes: A61M 2025/0079 Separate user-activated means, e.g. guidewires, guide tubes, balloon catheters or sheaths, for sealing off an orifice, e.g. a lumen or side holes, of a catheter
• CPC Class Codes: A61M 2025/1052 for temporarily occluding a vessel for isolating a sector
• CPC Class Codes: A61M 2025/1079 having radio-opaque markers in the region of the balloon
• CPC Class Codes: A61M 25/1011 Multiple balloon catheters
• CPC Class Codes: A61M 25/104 used for angioplasty

Abstract

A low profile device for simultaneous angioplasty and occlusion includes an angioplasty balloon and an occlusion element which adjoin a common catheter. The occlusion element may be either self-expanding (in which case it is deployed with a sheath that surrounds the catheter) or non-self-expanding (in which case it is deployed with a pull wire that passes through the catheter). The angioplasty balloon is inflated with fluid that either passes through the catheter or a separate tube (or lumen) that adjoins the catheter.

Claims

1. An intravascular method, comprising:

inserting a catheter into a vessel, the catheter having a therapy element and an emboli protection element disposed thereon;

inserting an elongate member into the vessel, wherein the elongate member is connected to the emboli protection element;

activating the emboli protection element by moving the elongate member to prevent migration of emboli within the vessel;

using a portion of the elongate member to prevent fluid communication between the therapy element and a distal end portion of the catheter, thereby permitting activation of the therapy element; and

treating a segment of the vessel with the therapy element.

2. The method of claim 1, said treating comprising performing an angioplasty procedure.

3. The method of claim 1, wherein the emboli protection element occludes the vessel.

4. The method of claim 1, said moving the elongate member comprising retracting a pull wire which passes through the catheter.

5. The method of claim 1, wherein activation of the therapy element comprises inflating the therapy element with fluid.

6. The method of claim 5, wherein the therapy element includes a balloon.

7. The method of claim 1, further comprising aspirating a region between the emboli protection element and the therapy element.

8. The method of claim 7, said aspirating including aspirating through the elongate member.

9. The method of claim 1, further comprising allowing blood to perfuse through the emboli protection element.

10. The method of claim 1, said preventing fluid communication comprising making a seal between the elongate member and the catheter with a seat disposed on the elongate member.

11. The method of claim 1, comprising retracting a distal portion of the emboli protection member over the catheter by retracting the elongate member.