Chest compression monitor with rotational sensing of compressions for discrimination of CPR movement from non-CPR movement
AssigneeZOLL Medical Corporation
InventorsGideon Butler, Gary A Freeman
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Abstract
A chest compression monitor for measuring the depth of chest compressions achieved during CPR. A sensor of the chest compression monitor is disposed within its housing such that compression of the housing due to CPR compressions, and its resultant deformation, is detected by the sensor and used by the control system as the starting point for calculating chest compression depth based on an acceleration signal indicative of the downward displacement of the chest.
Claims39
A chest compression monitoring system for facilitating administration of cardiopulmonary resuscitation (CPR) to a patient by a CPR provider, the chest compression monitoring system comprising:
- a housing configured to be held between the hands of the CPR provider and the chest of a patient during chest compressions and comprising:
- a first motion sensor disposed within the housing and configured to generate one or more first signals indicative of motion of the first motion sensor;
- a second motion sensor disposed within the housing and configured to generate one or more second signals indicative of motion of the second motion sensor,
- wherein the first motion sensor and the second motion sensor are configured to move relative to one another;
- and
- a medical device comprising a processor, a memory, and an output device, wherein the processor is configured to:
- receive, from the first motion sensor and the second motion sensor, the one or more first signals and the one or more second signals,
- analyze motion of the first motion sensor relative to the second motion sensor based on the one or more first signals and the one or more second signals;
- estimate at least one chest compression parameter based on the analyzed motion of the first motion sensor relative to the second motion sensor;
- and
- control the output device to provide chest compression feedback for the CPR provider based at least on part on the estimated at least one chest compression parameter.
A method of facilitating administration of cardiopulmonary resuscitation (CPR) chest compressions to a patient by a CPR provider, the method comprising:
- receiving, from a first motion sensor and a second motion sensor, one or more first signals and one or more second signals, wherein the first motion sensor and the second motion sensor are disposed in a same housing;
- analyzing motion of the first motion sensor relative to motion of the second motion sensor based on the one or more first signals and the one or more second signals;
- estimating at least one chest compression parameter based on the analyzed motion of the first motion sensor relative to the motion of the second motion sensor;
- and
- controlling an output device to provide chest compression feedback for the CPR provider based on the estimated at least one chest compression parameter.
Dependencies are inferred from the claim text.