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 the subject such that the heat exchanger is in contact with blood flowing within the vasculature;
a disposable extracorporeal heat exchanger configured to be fluidly coupled to the disposable heat exchange catheter;
a disposable pump head in fluid communication with the disposable heat exchange catheter and the extracorporeal heat exchanger, the disposable pump head, extracorporeal heat exchanger and disposable heat exchange catheter providing a disposable fluid circuit through which heat exchange fluid flows;
a heater/cooler device in thermal communication with the disposable extracorporeal 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 disposable extracorporeal heat exchanger;
at least one sensor configured for placement within an organ or vessel of the subject'"'"'s body for monitoring the temperature within the organ or vessel, the at least one sensor providing signals representative of the monitored temperature of the organ or vessel;
a reservoir disposed between and in fluid communication with the external heat exchanger and the pump head; and
a controller configured to control the heater/cooler device, including a pumping of the heat exchange fluid, 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.
70 Citations
32 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 the subject such that the heat exchanger is in contact with blood flowing within the vasculature; a disposable extracorporeal heat exchanger configured to be fluidly coupled to the disposable heat exchange catheter; a disposable pump head in fluid communication with the disposable heat exchange catheter and the extracorporeal heat exchanger, the disposable pump head, extracorporeal heat exchanger and disposable heat exchange catheter providing a disposable fluid circuit through which heat exchange fluid flows; a heater/cooler device in thermal communication with the disposable extracorporeal 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 disposable extracorporeal heat exchanger; at least one sensor configured for placement within an organ or vessel of the subject'"'"'s body for monitoring the temperature within the organ or vessel, the at least one sensor providing signals representative of the monitored temperature of the organ or vessel; a reservoir disposed between and in fluid communication with the external heat exchanger and the pump head; and a controller configured to control the heater/cooler device, including a pumping of the heat exchange fluid, 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, 23, 24, 25)
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26. 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 the subject such that the heat exchanger is in contact with blood flowing within the vasculature; a disposable extracorporeal heat exchanger configured to be fluidly coupled to the disposable heat exchange catheter; a reusable pump head in fluid communication with the disposable heat exchange catheter and the extracorporeal heat exchanger, the reusable pump head, extracorporeal heat exchanger and disposable heat exchange catheter providing a fluid circuit through which heat exchange fluid flows; a heater/cooler device in thermal communication with the disposable extracorporeal 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 disposable extracorporeal heat exchanger; at least one disposable sensor configured for placement within an organ of the subject'"'"'s body for monitoring the temperature of the organ, the at least one disposable sensor providing signals representative of the monitored temperature of the organ; a reservoir disposed between and in fluid communication with the external heat exchanger and the pump head; and a controller configured to control the heater/cooler device, including a pumping of the heat exchange fluid, in response to the signals provided by the at least one disposable sensor to maintain or change the temperature of at least a portion of the subject. - View Dependent Claims (27, 28, 29, 30, 31, 32)
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Specification