Dynamically Adjusted CPR Compression Parameters
AssigneeZOLL Medical Corporation
InventorGary A. Freeman
Life of this patent
Estimating the term…
Abstract
A resuscitation system for use in resuscitation of cardiac arrest victims includes an ECG monitor programmed to monitor an organized, non-shockable rhythm of an electrocardiogram (ECG) signal from a patient undergoing lifesaving cardiac care; a processor programmed to identify a time during an electrocardiographic cycle of the ECG signal during which a vulnerable period for risk of fibrillation induction of the ECG will occur; and control circuitry for generating signals to cause a parameter descriptive of chest compressions to be modified so as to minimize risk of induction of fibrillation during the vulnerable period.
Claims50
A resuscitation system for use in resuscitation of cardiac arrest victims, the system comprising:
- an ECG monitor programmed to monitor for an organized, non-shockable rhythm of an electrocardiogram (ECG) signal from a patient undergoing lifesaving cardiac care;
- a processor programmed to identify a time during an electrocardiographic cycle of the ECG signal during which a vulnerable period for risk of fibrillation induction of the ECG will occur;
- and
- control circuitry for generating signals to cause a parameter descriptive of chest compressions that is to be performed on the patient to be determined so as to reduce a risk of induction of fibrillation during the vulnerable period.
A medical chest compression method, comprising:
- monitoring an electrocardiogram (ECG) signal of an electrocardiographic cycle from a patient undergoing lifesaving cardiac care, wherein the ECG signal represents an organized, non-shockable rhythm;
- determining a time during the electrocardiographic cycle in which a vulnerable period for risk of fibrillation induction of the ECG signal will occur;
- and
- generating, with a computer-controlled medical device, signals to cause a parameter descriptive of chest compressions that are to be applied to the patient, to be set so as to reduce risk of induction of fibrillation during the vulnerable period.
A chest compression system, comprising:
- an ECG analyzer programmed to identify one or more portions of an ECG waveform for a patient, including a period of the ECG waveform during which the patient's heart is particularly vulnerable to chest compression induced fibrillation, and to generate one or more signals that direct the occurrence of chest compressions so as to avoid chest motion during the vulnerable period;
- and
- triggering circuitry arranged to receive a signal from the ECG analyzer and to cause instructions to be issued for upstroke, downstroke, or upstroke and downstroke of a patient chest in coordination with the received signal.
A chest compression system, comprising:
- a chest compression actuator arranged to provide automatic chest compressions to a patient suffering cardiac arrest using a chest compressor;
- triggering circuitry connected to the chest compression actuator to provide signals to coordinate operation of the chest compression actuator;
- and
- means for analyzing an ECG waveform of the patient to provide triggering signals to the triggering circuitry
- an ECG analyzer programmed to identify one or more portions of an ECG waveform for the patient, including a period during which the patient's heart is particularly vulnerable to induction of fibrillation due to chest compressions, and to generate one or more signals that provide for motion of the chest compressor so as to avoid motion during the vulnerable period;
- and
- triggering circuitry arranged to receive a signal from the ECG analyzer and to cause upstroke and downstroke phases of the chest compressor in coordination with the received signal.
Dependencies are inferred from the claim text.