Selective organ cooling apparatus
First Claim
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1. A heat transfer device for insertion in a blood vessel, comprising:
- a catheter capable of insertion into a selected blood vessel in the vascular system of a patient;
a heat transfer element attached to a distal portion of said catheter; and
a turbulence-enhancing element attached to a distal portion of said catheter and adapted to enhance turbulent blood flow along said heat transfer element, wherein said heat transfer element includes said turbulence-enhancing element, and further wherein an inner coaxial tube is disposed within said heat transfer element, said inner coaxial tube is connected in fluid flow communication with an inner coaxial tube within said catheter, said heat transfer element comprises a plurality of heat transfer segments, said turbulence-enhancing element comprises at least one flexible joint connecting each of said heat transfer segments to adjacent heat transfer segments, said at least one flexible joint including an internal area in fluid flow communication with said inner coaxial tube and adapted to expand upon flow of a working fluid through said catheter.
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Abstract
The present invention involves a selective organ heat transfer device having a flexible coaxial catheter capable of insertion into a selected feeding artery in the vascular system of a patient. A heat transfer element is attached to a distal portion of the catheter as well as a turbulence-enhancing element which is adapted to enhance turbulent blood flow along the heat transfer element. The heat transfer element may include the turbulence-enhancing element and/or a turbulence-enhancing element may be located proximal of the heat transfer element.
397 Citations
1 Claim
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1. A heat transfer device for insertion in a blood vessel, comprising:
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a catheter capable of insertion into a selected blood vessel in the vascular system of a patient;
a heat transfer element attached to a distal portion of said catheter; and
a turbulence-enhancing element attached to a distal portion of said catheter and adapted to enhance turbulent blood flow along said heat transfer element, wherein said heat transfer element includes said turbulence-enhancing element, and further wherein an inner coaxial tube is disposed within said heat transfer element, said inner coaxial tube is connected in fluid flow communication with an inner coaxial tube within said catheter, said heat transfer element comprises a plurality of heat transfer segments, said turbulence-enhancing element comprises at least one flexible joint connecting each of said heat transfer segments to adjacent heat transfer segments, said at least one flexible joint including an internal area in fluid flow communication with said inner coaxial tube and adapted to expand upon flow of a working fluid through said catheter.
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Specification
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Current AssigneeZoll Circulation Incorporated (Asahi Kasei Corporation)
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Original AssigneeInnercool therapies Incorporated (Taxus Cardium Pharmaceuticals Group, Inc.)
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InventorsLasheras, Juan C., Werneth, Randell L., Dobak, John D. III
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Primary Examiner(s)Leubecker, John P.
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Application NumberUS09/815,215Publication NumberTime in Patent Office761 DaysField of Search607/96, 607/104, 607/105, 607/106, 607/113, 606/20, 606/21, 606/22, 606/23, 604/93, 604/52, 604/53, 165/142, 165/178, 165/181, 165/184US Class Current607/105CPC Class CodesA61F 2007/0056 for coolingA61F 2007/126 for invasive application, e...A61F 7/12 Devices for heating or cool...
