Method and apparatus for managing temperature in a patient
First Claim
1. A fluid transfer assembly comprising:
- a fluid carrier defining a fluid carrier volume, the fluid carrier having a distal end and a proximal end, the distal end configured to insert within a body lumen; and
a heat exchange assembly coupled to the proximal end of the fluid carrier, the heat exchange assembly having;
at least one heat exchange conduit in fluid communication with the fluid carrier;
a heat exchanger in thermal communication with the heat exchange conduit; and
a pump in fluid communication with the fluid carrier and in fluid communication with the at least one heat exchange conduit, the pump defining a stroke volume greater than the fluid carrier volume defined by the fluid carrier, the at least one heat exchange conduit defining a heat exchange conduit volume greater than the stroke volume defined by the pump.
1 Assignment
0 Petitions
Accused Products
Abstract
A fluid transfer assembly includes a fluid carrier and a heat exchange assembly coupled to the fluid carrier. The heat exchange assembly includes a heat exchange conduit, a heat exchanger in thermal communication with the heat exchange conduit, and a pump. The pump defines a stroke volume that is greater than a fluid carrier volume defined by the fluid carrier. The configuration of the stroke volume of the pump and the fluid carrier volume of the fluid carrier limits the length of the fluid carrier. In such a configuration, the heat exchange assembly orients in proximity to the body during operation to create a relatively short ex vivo flow path between a body and the heat exchange assembly. During operation, as the fluid flows along the ex vivo flow path, the relatively short ex vivo flow path minimizes thermal change in the fluid caused by a heat exchange between the walls of the fluid carrier and the atmosphere.
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Citations
47 Claims
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1. A fluid transfer assembly comprising:
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a fluid carrier defining a fluid carrier volume, the fluid carrier having a distal end and a proximal end, the distal end configured to insert within a body lumen; and a heat exchange assembly coupled to the proximal end of the fluid carrier, the heat exchange assembly having; at least one heat exchange conduit in fluid communication with the fluid carrier; a heat exchanger in thermal communication with the heat exchange conduit; and a pump in fluid communication with the fluid carrier and in fluid communication with the at least one heat exchange conduit, the pump defining a stroke volume greater than the fluid carrier volume defined by the fluid carrier, the at least one heat exchange conduit defining a heat exchange conduit volume greater than the stroke volume defined by the pump. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A fluid transfer system comprising:
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a fluid carrier defining a fluid carrier volume, the fluid carrier having a distal end and a proximal end, the distal end configured to insert within a body lumen; a heat exchange assembly coupled to the proximal end of the fluid carrier, the heat exchange assembly having; at least one heat exchange conduit in fluid communication with the fluid carrier, a heat exchanger in thermal communication with the heat exchange conduit, and a pump in fluid communication with the fluid carrier and in fluid communication with the at least one heat exchange conduit, the pump defining a stroke volume greater than the fluid carrier volume defined by the fluid carrier, the at least one heat exchange conduit defining a heat exchange conduit volume greater than the stroke volume defined by the pump; and a console coupled to the heat exchange assembly, the console configured to circulate a thermal exchange fluid within the heat exchanger of the heat exchange assembly. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A heat exchange assembly configured to couple in fluid communication with a fluid carrier, a distal end of the fluid carrier configured to insert within a body lumen, the heat exchange assembly comprising:
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at least one heat exchange conduit defusing a heat exchange conduit volume; a heat exchanger in thermal communication with the heat exchange conduit; and a pump in fluid communication with the at least one heat exchange conduit, the pump defining a stroke volume, the heat exchange conduit volume defined by the at least one heat exchange conduit being greater than the stroke volume defined by the pump. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45)
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46. A method for obtaining a therapeutic temperature in a body comprising:
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inserting a distal end of a fluid carrier within a body lumen; coupling a proximal end of the fluid carrier to a heat exchange assembly, the heat exchange assembly having at least one heat exchange conduit in fluid communication with the fluid carrier, a heat exchanger in thermal communication with the heat exchange conduit, and a pump in fluid communication with the fluid carrier and in fluid communication with the at least one heat exchange conduit, the pump defining a stroke volume greater than a fluid carrier volume defined by the fluid carrier; detecting the temperature of the body; withdrawing fluid from the body lumen, through the fluid carrier and into the heat exchange conduit, by the pump to thermally modify the fluid by the thermal communication between the heat exchange conduit and the heat exchanger; introducing the thermally modified fluid to the body lumen; and repeating the steps of withdrawing and introducing until a detected body temperature is substantially equal to a preset therapeutic temperature. - View Dependent Claims (47)
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Specification