Method and apparatus for regional and whole body temperature modification
First Claim
1. A system for maintaining or changing the temperature of at least a portion of the body of a subject, comprising:
- a disposable heat exchange catheter having at least one recirculating-fluid-type intracorporeal heat exchanger, the disposable heat exchange catheter being insertable into the vasculature of a subject such that the intracorporeal heat exchanger is in contact with blood flowing within the vasculature;
an external heat exchanger configured to be fluidly coupled to the disposable heat exchange catheter;
a pump head in fluid communication with the intracorporeal heat exchanger and the external heat exchanger, the pump head, the external heat exchanger and the intracorporeal heat exchanger forming a fluid circuit through which a heat exchange fluid flows;
a heater/cooler device in thermal communication with the external heat exchanger, the heater/cooler device configured to add heat to the heat exchange fluid or subtract heat from the heat exchange fluid flowing through the external heat exchanger;
at least one sensor for monitoring the temperature of at least a portion of the subject'"'"'s body, the at least one sensor providing signals representative of the monitored temperature of the at least a portion of the subject'"'"'s body;
a fluid source in fluid communication with the fluid circuit for providing heat exchange fluid to the fluid circuit;
a reservoir in fluid communication with the external heat exchanger and the pump for storage of heat exchange fluid; and
a controller configured to control the heater/cooler device in response to the signals provided by the at least one sensor to maintain or change the temperature of at least a portion of the subject.
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Accused Products
Abstract
A heat exchange fluid supply system for supplying a heat exchange fluid to an intravascular heat exchange catheter includes a disposable cassette having a bulkhead and an external heat exchanger, and which is configured to operate in combination with a reusable master control unit. The bulkhead includes a reservoir section and a pump section. The reservoir section is provided with a means to monitor the amount of heat exchange fluid that is in the system. The bulkhead provides the mechanism for priming the system with heat exchange fluid from an external source and for circulating fluid to the catheter in a closed circuit. The pump section is configured to allow for pumping of heat exchange fluid at a constant pressure.
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Citations
22 Claims
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1. A system for maintaining or changing the temperature of at least a portion of the body of a subject, comprising:
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a disposable heat exchange catheter having at least one recirculating-fluid-type intracorporeal heat exchanger, the disposable heat exchange catheter being insertable into the vasculature of a subject such that the intracorporeal heat exchanger is in contact with blood flowing within the vasculature; an external heat exchanger configured to be fluidly coupled to the disposable heat exchange catheter; a pump head in fluid communication with the intracorporeal heat exchanger and the external heat exchanger, the pump head, the external heat exchanger and the intracorporeal heat exchanger forming a fluid circuit through which a heat exchange fluid flows; a heater/cooler device in thermal communication with the external heat exchanger, the heater/cooler device configured to add heat to the heat exchange fluid or subtract heat from the heat exchange fluid flowing through the external heat exchanger; at least one sensor for monitoring the temperature of at least a portion of the subject'"'"'s body, the at least one sensor providing signals representative of the monitored temperature of the at least a portion of the subject'"'"'s body; a fluid source in fluid communication with the fluid circuit for providing heat exchange fluid to the fluid circuit; a reservoir in fluid communication with the external heat exchanger and the pump for storage of heat exchange fluid; and a controller configured to control the heater/cooler device in response to the signals provided by the at least one sensor to maintain or change the temperature of at least a portion of the subject. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification