Claims
- 1. A heat transfer device for intravascular temperature control of a patient, comprising:
a flexible layer of a material, the flexible layer having a feature to produce mixing in fluid flowing adjacent said layer, the flexible layer and feature shaped and configured such that the flexible layer may be removed from a multi-part mold in the absence of an undercut, wherein the heat transfer device includes heat transfer segments separated by articulating joints.
- 2. The device of claim 1, wherein the flexible layer is formed of a metal selected from the group consisting essentially of Fe, Ti, Ta, nitinol, stainless steel, Al, Ag, Au, Cu, and Ni.
- 3. The device of claim 1, wherein a total outside diameter of the device is between about 9 f to 18 f.
- 4. The device of claim 1, wherein the articulating joints are shaped and configured as bellows.
- 5. The device of claim 1, wherein the articulating joints are shaped and configured as flexible tubes.
- 6. The device of claim 1, wherein the flexible layer has a thermal conductivity in the range of about 0.1 to 4 W/cm-K.
- 7. The device of claim 1, wherein each segment has at least one feature thereon, the feature including at least two helical ridges or grooves, one of said at least two helical ridges or grooves having opposite helicity from another of said helical ridges or grooves.
- 8. The device of claim 1, wherein each segment has a substantially cylindrical shape, said substantially cylindrical shape having a first half-cylinder and a second half-cylinder, said first and second half-cylinders joined at two sets of parting strips, each parting strip extending substantially parallel to an axis of the cylindrical shape; and
at least two helical ridges or grooves, one of said at least two helical ridges or grooves disposed on the first half-cylinder and another disposed on the second half-cylinder.
- 9. The device of claim 1, wherein each segment has at least one feature thereon, the feature including a continuous corkscrew design.
- 10. The device of claim 1, wherein each segment has at least one dimple or knob thereon.
- 11. The device of claim 10, wherein each segment has at least two features thereon, the at least two features being selected from the group consisting of dimples or knobs or combinations thereof.
- 12. The device of claim 11, wherein the at least two features are arranged in a line substantially parallel to the axis of the segment.
- 13. The device of claim 11, wherein the at least two features are arranged to be not in a line substantially parallel to the axis of the segment.
- 14. A method for performing a medical procedure while managing and controlling the temperature of the patient, comprising:
intravascularly inserting a catheter having a heat transfer element into a patient to be treated, the heat transfer element being formed of a flexible layer of a material, the flexible layer having a feature to produce mixing in fluid flowing adjacent said layer, the flexible layer and feature shaped and configured such that the flexible layer may be removed from a multi-part mold in the absence of an undercut; and cooling or heating the heat transfer element to control the patient's temperature.
- 15. The method of claim 14, wherein the medical procedure is selected from the group consisting of: angioplasty, neurosurgery, cardiovascular surgery, stroke treatment, and combinations thereof.
- 16. The device of claim 1, wherein the fluid is blood.
- 17. The device of claim 1, wherein the fluid is a working fluid.
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of U.S. patent application Ser. No. 10/117,733, filed on Apr. 4, 2002, entitled “Method Of Manufacturing A Heat Transfer Element For In Vivo Cooling”, which claims priority to U.S. Provisional Patent Application No. 60/281,771, filed Apr. 5, 2001, entitled “Mixing-Inducing Heat Transfer Element”, and is a continuation-in-part of U.S. patent application Ser. No. 09/607,799, filed Jun. 30, 2000, entitled “Selective Organ Cooling Apparatus and Method”, now U.S. Pat. No. 6,464,716, which is a continuation-in-part of U.S. patent application Ser. No. 09/215,041, filed Dec. 16, 1998, entitled “Articulation Device for Selective Organ Cooling Apparatus”, now U.S. Pat. No. 6,254,626; and the present application is also a continuation-in-part of U.S. patent application Ser. No. 09/379,295, filed Aug. 23, 1999, entitled “Method of Manufacturing a Heat Transfer Element for in Vivo Cooling”, which is a continuation-in-part of Ser. No. 09/103,342, filed Jun. 23, 1998, entitled “Selective Organ Cooling Catheter and Method of Using the Same”, now U.S. Pat. No. 6,096,068, which is a continuation-in-part of Ser. No. 09/047,012, filed Mar. 24, 1998, entitled “Selective Organ Hypothermia Method and Apparatus”, now U.S. Pat. No. 5,957,963, which is a continuation-in-part of Ser. No. 09/012,287, filed Jan. 23, 1998, entitled “Selective Organ Hypothermia Method and Apparatus”, now U.S. Pat. No. 6,051,019, all of which are incorporated herein.
Provisional Applications (1)
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Number |
Date |
Country |
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60281771 |
Apr 2001 |
US |
Continuations (1)
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Number |
Date |
Country |
Parent |
10117733 |
Apr 2002 |
US |
Child |
10795733 |
Mar 2004 |
US |
Continuation in Parts (6)
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Number |
Date |
Country |
Parent |
09607799 |
Jun 2000 |
US |
Child |
10795733 |
Mar 2004 |
US |
Parent |
09215041 |
Dec 1998 |
US |
Child |
09607799 |
Jun 2000 |
US |
Parent |
09379295 |
Aug 1999 |
US |
Child |
10795733 |
Mar 2004 |
US |
Parent |
09103342 |
Jun 1998 |
US |
Child |
09379295 |
Aug 1999 |
US |
Parent |
09047012 |
Mar 1998 |
US |
Child |
09103342 |
Jun 1998 |
US |
Parent |
09012287 |
Jan 1998 |
US |
Child |
09047012 |
Mar 1998 |
US |