US 12,226,340 B2
Thermal system with overshoot reduction
Gregory S. Taylor, Kalamazoo, MI (US); Marko N. Kostic, Oshawa (CA); and Christopher John Hopper, Kalamazoo, MI (US)
Assigned to Stryker Corporation, Portage, MI (US)
Filed by Stryker Corporation, Kalamazoo, MI (US)
Filed on Dec. 13, 2022, as Appl. No. 18/080,341.
Application 18/080,341 is a continuation of application No. 16/218,883, filed on Dec. 13, 2018, granted, now 11,554,039.
Claims priority of provisional application 62/610,319, filed on Dec. 26, 2017.
Prior Publication US 2023/0111328 A1, Apr. 13, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61F 7/00 (2006.01); A61B 5/00 (2006.01); A61B 5/01 (2006.01); A61B 18/00 (2006.01); A61B 18/02 (2006.01); A61F 7/02 (2006.01); A61B 17/00 (2006.01)
CPC A61F 7/0085 (2013.01) [A61B 5/01 (2013.01); A61B 5/015 (2013.01); A61B 5/486 (2013.01); A61B 18/02 (2013.01); A61F 7/02 (2013.01); A61B 5/7425 (2013.01); A61B 2017/00084 (2013.01); A61B 2018/0237 (2013.01); A61B 2505/09 (2013.01); A61F 2007/0001 (2013.01); A61F 2007/0054 (2013.01); A61F 2007/0056 (2013.01); A61F 2007/0076 (2013.01); A61F 2007/0086 (2013.01); A61F 2007/0093 (2013.01); A61F 2007/0095 (2013.01); A61F 2007/0288 (2013.01); A61F 2007/0295 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A thermal control unit for controlling a patient's temperature, the thermal control unit comprising:
a fluid outlet adapted to fluidly couple to a fluid supply line;
a fluid inlet adapted to fluidly couple to a fluid return line;
a circulation channel coupled to the fluid outlet and the fluid inlet;
a pump for circulating fluid through the circulation channel from the fluid inlet to the fluid outlet;
a heat exchanger adapted to add or remove heat from the fluid circulating in the circulation channel when activated;
a fluid temperature sensor adapted to sense a temperature of the fluid;
a patient temperature probe port adapted to receive patient temperature readings from a patient temperature probe;
a user interface adapted to receive a patient target temperature; and
a controller in communication with the patient temperature probe port, the pump, the fluid temperature sensor, and the user interface, the controller adapted to stop a flow of fluid out of the fluid outlet prior to the patient temperature reaching the patient target temperature, wherein the controller is adapted to monitor a slope of the patient temperature readings after the flow of fluid out of the fluid outlet is stopped for a predefined time period, and to restart the flow of fluid out of the fluid outlet after the predefined time period if the slope of the patient temperature readings changes by more than a threshold.