Peter L Barker

US Patent:

6589271, Jul 8, 2003

Filed:

Dec 13, 2001

Appl. No.:

10/015505

Inventors:

Elbert Tzeng - Irvine CA
Vaso Adzich - Yorba Linda CA
Hortensia Pompa - San Clemente CA
Scott M. Evans - Santa Ana CA
Peter Barker - Oceanside CA
William J. Worthen - Coto de Caza CA
Suzanne C. Winter - Coto de Caza CA
David P. Balding - Mission Viejo CA
Kenneth A. Collins - Mission Viejo CA

Assignee:

Alsius Corporations - Irvine CA

International Classification:

A61F 700

US Classification:

607105, 607106, 607113

Abstract:

Catheters adapted to exchange heat with a body fluid flowing through a body conduit employ helical elongate lumens for heat transfer with the body fluid. The helical elongate lumen of a catheter forms multiple turns extending longitudinally of a portion of the catheter with the turns each being bonded to the catheter along a fraction of the length of the turn. The length of the lumen and its orientation in each turn has the lumen otherwise displaced over a major portion of its length from the elongate body. The turns of the helical lumen can be arranged in sets having different lengths to encounter all areas of the flow. One or more infusion lumens may also extend to an infusion port or ports. The helical elongate lumen is defined by an elongate, thin-walled element. This lumen is in fluid communication with a heater/chiller supplying a working fluid for heat transfer through the wall of the elongate element defining the helical elongate lumen.

US Patent:

6706060, Mar 16, 2004

Filed:

May 30, 2002

Appl. No.:

10/160220

Inventors:

Elbert Tzeng - Irvine CA
Wesley Adzich - Yorba Linda CA
Peter Barker - Oceanside CA
Hortensia Pompa - San Clemente CA
Scott M. Evans - Santa Ana CA

Assignee:

Alsius Corporation - Irvine CA

International Classification:

A61F 700

US Classification:

607105, 607106, 607113

Abstract:

A heat exchange catheter has a catheter body with a working fluid supply lumen extending therethrough, and terminating in a helical heat exchange tube that exits the body and extends proximally back along the catheter body. Working fluid flows through the heat exchange tube to exchange heat with the central venous system of a patient when the catheter body is properly placed in the patient.

US Patent:

6716236, Apr 6, 2004

Filed:

Oct 19, 2001

Appl. No.:

10/045936

Inventors:

Elbert Tzeng - Irvine CA
Peter Barker - Oceanside CA
Scott M. Evans - Santa Ana CA
Wayne A. Noda - Mission Viejo CA

Assignee:

Alsius Corporation - Irvine CA

International Classification:

A61F 700

US Classification:

607105, 607106, 607113

Abstract:

An intravenous catheter system (apparatus and method) for controlling patient temperature includes a generally tubular elongate body, a heat exchange element through which a heat exchange fluid circulates, and an inflation element or irregular surface positioned within the heat exchange element for promoting mixing of the circulating heat exchange fluid. The heat exchange element and inflation element preferably include inflatable balloons. The catheter preferably has two to four balloons having a substantially straight configuration, each balloon containing an inner balloon inflation element having a substantially spiral configuration. The catheter also preferably has at least one infusion lumen for providing access to the patients blood and a guidewire lumen to accommodate a guidewire. The catheter is used in conjunction with a heat/cool system to cool a hyperthermic patient as quickly as possible, to warm a hypothermic patient as quickly as possible or to maintain normothermia.

US Patent:

6749625, Jun 15, 2004

Filed:

Aug 30, 2002

Appl. No.:

10/234084

Inventors:

Hortensia Pompa - San Clemente CA
Nora Tran Pham - Lake Forest CA
Lynn Miyeko Shimada - Orange CA
Peter Barker - Oceanside CA

Assignee:

Alsius Corporation - Irvine CA

International Classification:

A61F 700

US Classification:

607105, 607104, 607106

Abstract:

Various intravascular heat exchange catheters are disclosed that have non-straight heat exchange elements.

US Patent:

6796995, Sep 28, 2004

Filed:

Jan 31, 2003

Appl. No.:

10/355776

Inventors:

Nora Tran Pham - Lake Forest CA
Hortensia Pompa - San Clemente CA
Peter Barker - Oceanside CA
Lynn Miyeko Shimada - Orange CA

Assignee:

Alsius Corporation - Irvine CA

International Classification:

A61F 700

US Classification:

607105, 607106

Abstract:

An intravascular heat exchange catheter is disclosed that has a non-straight heat exchange element.

US Patent:

7255709, Aug 14, 2007

Filed:

Aug 6, 2004

Appl. No.:

10/913079

Inventors:

Blair D. Walker - Mission Viejo CA, US
Peter Barker - Bonsall CA, US
Hortensia Pompa - San Clemente CA, US
Xochitl Huezo - Lake Forest CA, US
Lynn Miyeko Shimada - Orange CA, US

Assignee:

Alsius Corporation - Irvine CA

International Classification:

A61F 7/12

US Classification:

607105

Abstract:

An indwelling heat exchange catheter with integrated temperature sensor includes a catheter tube. A closed loop heat exchanger extends from the catheter tube. A temperature sensor can be integrally formed with the catheter tube such that it is insulated from the closed loop heat exchanger. The indwelling heat exchange catheter can further include a guide-wire tube that extends from the catheter tube and in such a case, the temperature sensor can be affixed to the guide-wire tube. Alternatively, a wire can extend through the catheter tube and the temperature sensor can be affixed to the wire.

US Patent:

8128595, Mar 6, 2012

Filed:

Aug 24, 2001

Appl. No.:

09/939239

Inventors:

Blair D. Walker - Mission Viejo CA, US
Scott M. Evans - Santa Ana CA, US
David P. Balding - Mission Viejo CA, US
Peter Barker - Oceanside CA, US

Assignee:

Zoll Circulation, Inc. - Sunnyvale CA

International Classification:

A61M 29/00
A61F 7/12

US Classification:

604113, 604 9601

Abstract:

A kit of parts comprises a system and instructions for use for controlling patient temperature which uses a central venous line catheter having a heat exchange element. The central venous line catheter is provided with one or more lumens for providing access to the central blood supply of the patient, and with additional lumens for communicating heat exchange fluid to the heat exchange element. Heat exchange fluid temperature is controlled through a feed back loop in which patient temperature is sensed and used to control a temperature control unit comprising a heating device and/or a cooling device in heat exchange relationship with the heat exchange fluid. A tubing set transports the heat exchange fluid between the central venous line and the temperature control unit, with a pump serving to circulate the fluid in a closed fluid circuit in the system.

US Patent:

8313461, Nov 20, 2012

Filed:

Jan 16, 2008

Appl. No.:

12/015125

Inventors:

Blair D. Walker - Mission Viejo CA, US
Scott M. Evans - Santa Ana CA, US
David P. Baiding - Mission Viejo CA, US
Peter Barker - Oceanside CA, US

Assignee:

Zoll Circulation, Inc. - Sunnyvale CA

International Classification:

A61F 7/12
A61M 31/00
A61M 37/00
A61M 29/00

US Classification:

604113, 604 9601, 60410301, 607113

Abstract:

A kit of parts comprises a system and instructions for use for controlling patient temperature which uses a central venous line catheter having a heat exchange element. The central venous line catheter is provided with one or more lumens for providing access to the central blood supply of the patient and with additional lumens for communicating heat exchange fluid to the heat exchange element. Heat exchange fluid temperature is controlled through a feed back loop iii which patient temperature is sensed and used to control a temperature control unit comprising a heating device and/or a cooling device in heat exchange relationship with the heat exchange fluid. A tubing set transports the heat exchange fluid between the central venous line and the temperature control unit, with a pump serving to circulate the fluid in a closed fluid circuit in the system.