Back to results
US 11,992,433 B2Granted
Advanced systems and methods for patient body temperature control
AssigneeZoll Circulation, Inc.
InventorJeremy Thomas Dabrowiak
Life of this patent
Estimating the term…
Abstract
Devices, systems and methods for controlling the temperature of all or part of the body of a human or animal subject.
Claims22
A system for warming or cooling a subject to a target temperature, said system comprising:
- a heat exchanger configured to exchange heat with the subject's flowing blood at a heat exchange location;
- a temperature sensor configured to sense a temperature of blood of the subject at a temperature sensing location within a vasculature of the subject;
- and
- a controller which comprises memory and a processor, the controller being configured to:
- induce a plurality of periods of reduced heat exchange between the heat exchanger and the subject's flowing blood;
- receive data representing sensed blood temperature that is sensed during at least one period of the plurality of periods of reduced heat exchange;
- revise, based on the data representing sensed blood temperature that is sensed during the at least one period of the plurality of periods of reduced heat exchange, a calibration value in a formula for an estimate of a temperature at a target location in the subject that is different from the temperature sensing location and the heat exchange location, wherein revising the calibration value changes a relationship between the sensed blood temperature and the estimate of the temperature at the target location in the subject;
- and
- provide, based on the revised formula, an estimate of the temperature at the target location in the subject.
6 more elements
A system for warming or cooling a subject to a target temperature, the system comprising:
- a heat exchange catheter having a heat exchanger through which a heat exchange fluid circulates, said heat exchange catheter being insertable into a vasculature of a subject such that the heat exchanger exchanges heat with blood flowing through a vasculature of the subject at a heat exchange location;
- a temperature sensor configured to sense a temperature of the blood at a temperature sensing location within the vasculature;
- and
- a controller which comprises memory and a processor;
- wherein:
- the controller is programmed to alter a temperature and/or a flow rate of the heat exchange fluid so as to induce a plurality of periods of reduced heat exchange between the heat exchanger and the subject's flowing blood;
- the controller receives data representing sensed blood temperature that is sensed during at least one period of the plurality of periods of reduced heat exchange;
- and
- the controller revises, based on the data representing sensed blood temperature that is sensed during the at least one period of the plurality of periods of reduced heat exchange, a calibration value in a formula for an estimate of a temperature at a target location in the subject that is different from the temperature sensing location and the heat exchange location, wherein revising the calibration value changes a relationship between the sensed blood temperature and the estimate of the temperature at the target location in the subject;
- and
- the controller is programed to provide, based on the revised formula, an estimate of the temperature at the target location in the subject.
8 more elements
Dependencies are inferred from the claim text.