Patent ID: 11951035
Assignee: ZOLL CIRCULATION, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 7:
8. A body heat exchange system comprising:
heater/cooler apparatus for alternately warming or cooling a heat exchange fluid for delivery to a body heat exchange device for surface or endovascular heat exchange in or on the body of a subject;
a pump for circulating the heat exchange fluid through the body heat exchange device;
a temperature sensor for sensing a temperature of the heat exchange fluid;
a pressure sensor for sensing a pressure of the heat exchange fluid;
a controller which receives a maximum pump speed set point and signals from the temperature sensor and pressure sensor, said controller being programmed for to:
a) establishing current cold/warm status of the heat exchange fluid based on the sensed temperature of the heat exchange fluid;
b) determining whether operation of the pump at the maximum pump speed set point will cause over-pressurization of the heat exchange fluid or under-pressurization of the heat exchange fluid; and
c) if it is determined that operation of the pump at the maximum pump speed set point will cause over-pressurization of the heat exchange fluid, causing the maximum pump speed set point to change to an adjusted maximum pump speed set point at which the pump may operate without causing over-pressurization of the heat exchange fluid; or
d) if it is determined that operation of the pump at the maximum pump speed set point will cause an under-pressurization of the heat exchange fluid, causing the maximum pump speed set point to change to an adjusted maximum pump speed set point at which the pump may operate without causing under-pressurization of the heat exchange fluid.