Indwelling heat exchange catheter and method of using same

• US 6,755,851 B2
• Filed: 05/02/2002
• Issued: 06/29/2004
• Est. Priority Date: 04/21/1998
• Status: Expired due to Term

• Current Assignee: Zoll Circulation Incorporated (Asahi Kasei Corporation)
• Original Assignee: Alsius Corporation
• Inventors: Jones, Mike L., Evans, Scott M., Noda, Wayne A.
• Primary Examiner(s): GIBSON, ROY DEAN
• Application Number:
  US10/138,290
• Publication Number:
  US 20020169490A1
• Time in Patent Office: 789 Days
• Field of Search: 607/96, 607/104-106, 607/113, 604/113
• US Class Current: 607/106
• CPC Class Codes: A61F 7/12 Devices for heating or cooling internal body cavities
• CPC Class Codes: A61M 25/1011 Multiple balloon catheters

Abstract

A catheter is adapted to exchange heat with a body fluid, such as blood, flowing in a body conduit, such as a blood vessel. The catheter includes an inlet lumen and an outlet lumen to circulate working fluid wherein at least one of the inlet or outlet lumens is shaped to induce mixing in the body fluid flowing pass it. In one embodiment, at least one lumen is shaped to induce turbulence flow in the body fluid.

Claims

1. A catheter system to change the temperature of blood by heat transfer to or from a circulating working fluid, comprising:

an inlet lumen to introduce the circulating working fluid; and

an outlet lumen to extract the circulating working fluid, the outlet lumen having a spiral shape when inflated to induce mixing in blood flowing past the outlet lumen and in the working fluid.

2. A catheter system to change the temperature of blood by heat transfer to or from a circulating working fluid, comprising:

an outlet lumen to extract the circulating working fluid; and

an inlet lumen to introduce the circulating working fluid;

wherein at least one of;

the inlet lumen, and the outlet lumen, has a spiral shape when inflated to induce mixing in at least one of;

the blood, and in the working fluid.