Self-centering patient temperature control catheter

• US 9,314,370 B2
• Filed: 09/28/2011
• Issued: 04/19/2016
• Est. Priority Date: 09/28/2011
• Status: Active Grant

• Current Assignee: Zoll Circulation Incorporated (Asahi Kasei Corporation)
• Original Assignee: Zoll Circulation Incorporated (Asahi Kasei Corporation)
• Inventors: Dabrowiak, Jeremy T., Lim, Alex L., Gurukula, Venkata Vishnu, Helkowski, Richard A.
• Primary Examiner(s): Stoklosa, Joseph
• Assistant Examiner(s): Avigan, Adam
• Application Number:
  US13/247,122
• Publication Number:
  US 20130079856A1
• Time in Patent Office: 1,665 Days
• Field of Search: 607105-106
• US Class Current: 1/1
• CPC Class Codes: A61F 2007/0054 with a closed fluid circuit, e.g. hot water
• CPC Class Codes: A61F 2007/126 for invasive application, e.g. for introducing into blood vessels
• CPC Class Codes: A61F 7/12 Devices for heating or cooling internal body cavities

Abstract

A patient temperature control catheter includes working fluid supply and return lumens through which working fluid circulates to exchange heat with a patient in whom the catheter is positioned. At least one lumen is defined by plural coils axially spaced from each other. At least a first coil is a large coil that inflates with working fluid to seat against a wall of a blood vessel in which the catheter is positioned, with blood flowing through the coil so as not to block blood flow in the vessel.

Claims

1. A catheter, comprising:

working fluid supply and return lumens through which working fluid can circulate, at least one lumen being defined by plural coils axially spaced from each other, at least a first coil being a large coil that inflates with working fluid to seat against a wall of a blood vessel in which the catheter is positioned with blood flowing through the coil so as not to block blood flow in the vessel;

at least a second coil, the second coil being a small coil in that the second coil does not contact the wall of the blood vessel when inflated with working fluid; and

at least a third coil, the third coil being a large coil that inflates with working fluid to seat against a wall of a blood vessel in which the catheter is positioned with blood flowing through the third coil so as not to block blood flow in the vessel, wherein the first and third coils are separated from each other in an axial dimension by the second coil.

2. The catheter of claim 1, wherein working fluid flows serially through the coils.

3. The catheter of claim 1, comprising a straight tube coaxial with the coils and in fluid communication therewith.

4. The catheter of claim 3, wherein the coils are in the working fluid supply path and the straight tube defines at least part of the working fluid return path.

5. The catheter of claim 4, wherein the coils are in the working fluid return path and the straight tube defines at least part of the working fluid supply path.