Abstract: A catheter is adapted to exchange heat with a body fluid, such as blood, flowing in a body conduit, such as a blood vessel. The catheter includes a shaft with a heat exchange region disposed at its distal end. This region may include hollow fibers which are adapted to receive a remotely cooled heat exchange fluid preferably flowing in a direction counter to that of the body fluid. The hollow fibers enhance the surface area of contact, as well as the mixing of both the heat exchange fluid and the body fluid. The catheter can be positioned to produce hypothermia in a selective area of the body or alternatively positioned to systemically cool the entire body system.
Type:
Grant
Filed:
September 4, 2001
Date of Patent:
May 17, 2005
Assignee:
Alsius Corp.
Inventors:
Wayne A. Noda, Mike L. Jones, Scott M. Evans, Blair D. Walker, William J. Worthen, Yves Pierre Gobin
Abstract: A central venous catheter includes coolant supply and return lumens which communicate coolant to and from first and second heat exchange membranes arranged along the distal segment of the catheter. The coolant in the heat exchange membranes removes heat from the patient. Additional lumens are provided for conventional central venous catheter uses.
Type:
Grant
Filed:
March 7, 2001
Date of Patent:
June 15, 2004
Assignee:
Alsius Corp.
Inventors:
Anthony C. Aliberto, Scott M. Evans, William J. Worthen
Abstract: A catheter is adapted to exchange heat with a body fluid, such as blood, flowing in a body conduit, such as a blood vessel. The catheter includes a shaft with a heat exchange region disposed at its distal end. This region may include hollow fibers which are adapted to receive a remotely cooled heat exchange fluid preferably flowing in a direction counter to that of the body fluid. The hollow fibers enhance the surface area of contact, as well as the mixing of both the heat exchange fluid and the body fluid. The catheter can be positioned to produce hypothermia in a selective area of the body or alternatively positioned to systemically cool the entire body system.
Type:
Grant
Filed:
October 19, 2001
Date of Patent:
April 27, 2004
Assignee:
Alsius Corp.
Inventors:
Wayne A. Noda, Mike L. Jones, Scott M. Evans, Blair D. Walker, William J. Worthen, Yves Pierre Gobin
Abstract: A method for treating cardiac arrest includes defibrillating the patient and/or ventilating the patient and/or administering a cardiac arrest drug such as epinephrine to resuscitate the patient, and then cooling the patient using one or more cooling catheter positioned in the central venous system of the patient.
Type:
Application
Filed:
September 12, 2002
Publication date:
November 20, 2003
Applicant:
Alsius Corp.
Inventors:
William J. Worthen, Scott M. Evans, Suzanne C. Winter, David Balding
Abstract: A catheter with three spiral heat exchange elements surrounding a central supply tube and communicating with a source of heat exchange fluid in a closed loop for effecting patient temperature control and at least two infusion lumens for providing access to the central venous blood supply when the catheter is placed in the central venous system. An anchor can be provided to suture or tape the catheter to the skin of a patient.
Abstract: A method for treating cardiac arrest includes defibrillating the patient and/or ventilating the patient and/or administering a cardiac arrest drug such as epinephrine to resuscitate the patient, and then cooling the patient using one or more cooling catheter positioned in the central venous system of the patient.
Type:
Application
Filed:
June 27, 2002
Publication date:
December 19, 2002
Applicant:
Alsius Corp.
Inventors:
William J. Worthen, Scott M. Evans, Suzanne C. Winter, David Balding
Abstract: A method for treating cardiac arrest includes defibrillating the patient and/or ventilating the patient and/or administering a cardiac arrest drug such as epinephrine to resuscitate the patient, and then cooling the patient using one or more cooling catheter positioned in the central venous system of the patient.
Type:
Application
Filed:
May 20, 2002
Publication date:
September 26, 2002
Applicant:
Alsius Corp.
Inventors:
William J. Worthen, Scott M. Evans, Suzanne C. Winter, David Balding