US 2021/0228407 A1Published application

Thermal system

AssigneeStryker Corporation

InventorsGregory S. Taylor, Marko N. Kostic, Marco Constant, Christopher John Hopper

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Abstract

A thermal control unit supplies temperature controlled fluid to one or more thermal pads used to control the temperature of a patient. The thermal control unit includes a fluid outlet, fluid inlet, heat exchanger, pump, and a controller. The controller receives first and second data from at least two different sources to determine if the patient is shivering or not. The two different sources may include a temperature sensor adapted to detect a temperature of the fluid, a temperature sensor adapted to detect a temperature of the patient, a tissue oxygenation sensor, a vibration/motion sensor, a thermal image sensor, an electromyograph, and/or other sensors. In some embodiments, the thermal control unit takes one or more automatic actions in response to detection of patient shivering.

Claims20

Dependent claims

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 heat exchanger;
a pump for circulating fluid from the fluid inlet through the heat exchanger and to the fluid outlet;
and
a controller adapted to receive first data from a first source and second data from a second source, the controller further adapted to use both the first data and the second data to determine if the patient is shivering, the controller further adapted to perform the following
(i) notify a user that the patient is shivering only if the first data exceeds a first threshold and the second data exceeds a second threshold;
and
(ii) not notify the user that the patient is shivering if either (a) the first data exceeds the first threshold but the second data does not exceed the second threshold, or (b) the second data exceeds the second threshold but the first data does not exceed the first threshold.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/230,615Filed 14 Apr 2021
Priority: 23 Nov 2016
Published: 29 Jul 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

A61F 7/0085
Heating or cooling appliances for medical or therapeutic treatment of the human body: devices for generating hot or cold treatment fluids
A61B 5/0036
Features or image-related aspects of imaging apparatus, e.g. for MRI, optical tomography or impedance tomography apparatus; Arrangements of…:…
A61B 5/01
Measuring for diagnostic purposes ; Identification of persons: measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for…
A61B 5/1101
Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb: detecting tremor

Family

Application62/425,813Us provisional application · filed 23 Nov 2016
Application15/820,558Continuation · filed 22 Nov 2017
Application17/230,615Continuation
US 10,993,829 B2Related patent
US 11,918,510 B2Related patent
US 2018/0140459 A1Published application
US 2021/0228407 A1This patent

From the US filing history. Foreign family members aren’t listed.