US6019783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling system for therapeutic catheter
Assignee: Zoll Circulation Inc
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Filing: 1999-03-02
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Granted: 2000-02-01
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Expires: 2019-03-02
Abstract
Abstract A heat exchanger to remove heat from coolant in a closed circuit cooling catheter includes two heat exchange stages. Each stage includes a heat exchange element, such as a group of hollow fibers, and a TEC array juxtaposed with the heat exchange element to remove heat from the element. The elements are in fluid series with each other and are separated from each other by a thermal barrier. A thermal interface can be provided between each element and its TEC array. In one embodiment, the thermal interface is a gel layer. In another embodiment, the thermal interface is an ethylene glycol bath.
Inventors
- 👤 Peter J. Philips
- 👤 Wayne Arthur Noda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:41
CPC Classifications
A; A61; A61F; A61F7/00; A61F7/12; F; F28; F28F; F28F21/00; F28F21/06; F28F21/062
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
68 words
A heat exchange system for a catheter, comprising: at least one heat exchange element connectable to the catheter for receiving coolant from the catheter; and at least one thermal electric cooler (TEC) in thermal contact with the heat exchange element for heating or cooling the element such that coolant is returned to catheter to heat or cool the catheter, wherein the heat exchange element includes plural hollow fibers.
Claim 2
Dependent Claim
68 words
A heat exchange system for a catheter, comprising: at least one heat exchange element connectable to the catheter for receiving coolant from the catheter; and at least one thermal electric cooler (TEC) in thermal contact with the heat exchange element for heating or cooling the element such that coolant is returned to catheter to heat or cool the catheter, wherein the heat exchange element includes plural hollow fibers.
Claim 3
Dependent Claim
26 words
The system of claim 1, further comprising an interface sandwiched between the heat exchange element and the TEC to removably couple the element to the TEC.
Claim 4
Dependent Claim
21 words
The system of claim 1, further comprising at least one thermal interface between the heat exchange element and the TEC cooler.
Claim 5
Dependent Claim
10 words
The system of claim 1, in combination with the catheter.
Claim 6
Dependent Claim
16 words
The system of claim 1, further comprising a heater connectable to the catheter to heat coolant.
Claim 7
Dependent Claim
74 words
A heat exchange system for a catheter, comprising: at least one heat exchange element connectable to the catheter for receiving coolant from the catheter; and at least one thermal electric cooler (TEC) in thermal contact with the heat exchange element for heating or cooling the element such that coolant is returned to catheter to heat or cool the catheter, wherein the heat exchange element includes a bag having plural fluid paths through the bag.
Claim 8
Dependent Claim
74 words
A heat exchange system for a catheter, comprising: at least one heat exchange element connectable to the catheter for receiving coolant from the catheter; and at least one thermal electric cooler (TEC) in thermal contact with the heat exchange element for heating or cooling the element such that coolant is returned to catheter to heat or cool the catheter, wherein the heat exchange element includes a bag having plural fluid paths through the bag.
Claim 9
Dependent Claim
86 words
A heat exchange system for a catheter, comprising: at least one heat exchange element connectable to the catheter for receiving coolant from the catheter; at least one thermal electric cooler (TEC) in thermal contact with the heat exchange element for heating or cooling the element such that coolant is returned to catheter to heat or cool the catheter; and at least first and second heat exchange elements in series and first and second TEC assemblies, each heat exchange element being associated with a respective TEC assembly.
Claim 10
Dependent Claim
86 words
A heat exchange system for a catheter, comprising: at least one heat exchange element connectable to the catheter for receiving coolant from the catheter; at least one thermal electric cooler (TEC) in thermal contact with the heat exchange element for heating or cooling the element such that coolant is returned to catheter to heat or cool the catheter; and at least first and second heat exchange elements in series and first and second TEC assemblies, each heat exchange element being associated with a respective TEC assembly.
Claim 11
Dependent Claim
15 words
The system of claim 7, further comprising at least one thermal barrier between the elements.
Claim 12
Dependent Claim
61 words
A cooling system for a therapeutic medical device, comprising: at least one heat exchanger made at least partially of plastic, the heat exchanger receiving coolant from the medical device and returning coolant thereto; and a thermal electric cooler (TEC) in thermal contact with the heat exchanger for removing heat from the heat exchanger, wherein the heat exchanger includes plural hollow fibers.
Claim 13
Dependent Claim
61 words
A cooling system for a therapeutic medical device, comprising: at least one heat exchanger made at least partially of plastic, the heat exchanger receiving coolant from the medical device and returning coolant thereto; and a thermal electric cooler (TEC) in thermal contact with the heat exchanger for removing heat from the heat exchanger, wherein the heat exchanger includes plural hollow fibers.
Claim 14
Dependent Claim
67 words
A cooling system for a therapeutic medical device, comprising: at least one heat exchanger made at least partially of plastic, the heat exchanger receiving coolant from the medical device and returning coolant thereto; and a thermal electric cooler (TEC) in thermal contact with the heat exchanger for removing heat from the heat exchanger, wherein the heat exchanger includes a bag having plural fluid paths through the bag.
Claim 15
Dependent Claim
67 words
A cooling system for a therapeutic medical device, comprising: at least one heat exchanger made at least partially of plastic, the heat exchanger receiving coolant from the medical device and returning coolant thereto; and a thermal electric cooler (TEC) in thermal contact with the heat exchanger for removing heat from the heat exchanger, wherein the heat exchanger includes a bag having plural fluid paths through the bag.
Claim 16
Dependent Claim
25 words
The system of claim 10, further comprising an interface sandwiched between the heat exchanger and the TEC to removably couple the element to the TEC.
Claim 17
Dependent Claim
20 words
The system of claim 10, further comprising at least one thermal interface between the heat exchanger and the TEC cooler.
Claim 18
Dependent Claim
20 words
The system of claim 10, wherein the device is a catheter, and the system is in combination with the catheter.
Claim 19
Dependent Claim
18 words
The system of claim 10, further comprising a heater connectable to the therapeutic medical device to heat coolant.
Claim 20
Dependent Claim
62 words
A cooling system for a therapeutic medical device, comprising: at least one heat exchanger made at least partially of plastic, the heat exchanger receiving coolant from the medical device and returning coolant thereto; a thermal electric cooler (TEC) in thermal contact with the heat exchanger for removing heat from the heat exchanger; and at least first and second heat exchangers in series.
Claim 21
Dependent Claim
62 words
A cooling system for a therapeutic medical device, comprising: at least one heat exchanger made at least partially of plastic, the heat exchanger receiving coolant from the medical device and returning coolant thereto; a thermal electric cooler (TEC) in thermal contact with the heat exchanger for removing heat from the heat exchanger; and at least first and second heat exchangers in series.
Claim 22
Dependent Claim
23 words
The system of claim 15, further comprising first and second TEC assemblies, wherein each heat exchanger is associated with a respective TEC assembly.
Claim 23
Dependent Claim
15 words
The system of claim 15, further comprising at least one thermal barrier between the elements.
Claim 24
Dependent Claim
17 words
The system of claim 1, further comprising pump means communicating with the coolant for moving the coolant.
Claim 25
Dependent Claim
85 words
A cooling system, comprising: catheter means for conveying coolant into a patient's body without directly contacting the coolant with the body; heat exchanger means communicating with the catheter means for receiving therefrom and returning thereto coolant; cooling means in thermal contact with the heat exchanger means for conveying heat away from the heat exchanger means; and at least first and second heat exchanger means in fluid series with each other and first and second cooling means associated with the first and second heat exchanger means.
Claim 26
Dependent Claim
85 words
A cooling system, comprising: catheter means for conveying coolant into a patient's body without directly contacting the coolant with the body; heat exchanger means communicating with the catheter means for receiving therefrom and returning thereto coolant; cooling means in thermal contact with the heat exchanger means for conveying heat away from the heat exchanger means; and at least first and second heat exchanger means in fluid series with each other and first and second cooling means associated with the first and second heat exchanger means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-01-31 | 2003-08-02 | 2004-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-01-31 | 2007-08-02 | 2008-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-01-31 | 2011-08-02 | 2012-02-01 | $7700.00 | Window Closed / Lapsed |