Device and method for automatically detecting pulse during cardiopulmonary resuscitation

Abstract

The invention discloses a device for automatically detecting pulse during cardiopulmonary resuscitation and a detection method thereof. A processor synchronously collects an acceleration signal and an electrocardiogram signal through an acceleration sensor and an electrocardiogram acquisition module, and the processor analyzes the collected acceleration signal. It is judged whether there is a press in the time period corresponding to the signal, and if there is no press, the rhythm analysis is performed on the collected ECG signal, and if the ECG signal is a rhythmic ECG signal, the ECG signal and the acceleration signal are preprocessed. The processor calculates the cross-correlation coefficient sequence between the preprocessed ECG signal and the acceleration signal, extracts the maximum cross-correlation coefficient, and compares the maximum cross-correlation coefficient with the set threshold, and if it is greater than the set threshold, there is a pulse. It can automatically detect the patient's pulse, with short detection time and high accuracy, which improves the success rate of cardiopulmonary resuscitation and eliminates the interference of the doctor's pressing action on the pulse detection during the cardiopulmonary resuscitation process.

Description

technical field [0001] The invention relates to the field of measuring pulse, heart rate, blood pressure or blood flow, in particular to a device for automatically detecting pulse during cardiopulmonary resuscitation and a detection method thereof. Background technique [0002] Pulse detection is not only one of the main methods to identify cardiac arrest, but also an important means to judge whether the patient has returned to spontaneous circulation during cardiopulmonary resuscitation. In the process of cardiopulmonary resuscitation, fast and accurate pulse detection is very important, because on the one hand, false negative judgments can easily cause patients to undergo unnecessary continuous compression or defibrillation; on the other hand, long-term interruption of chest compressions for pulse detection and false positives The judgment will make the patient lose the best treatment opportunity. [0003] In the prior art, pulse detection is mainly achieved by palpation,...

AI Technical Summary

Problems solved by technology

In the process of cardiopulmonary resuscitation, fast and accurate pulse detection is very important, because on the one hand, false negative judgments can easily cause patients to undergo unnecessary continuous compression or defibrillation; on the other hand, long-term interruption of chest compressions for pulse detection and false positives The judgment will make the patient lose the best treatment opportunity

[0003] In the existing technology, pulse detection is mainly achieved by palpation, but the survey found that even for experienced rescuers, palpation is time-consuming and inaccurate

To solve this problem, researchers have explored automatic pulse detection, including the use of thoracic impedance signals, photoplethysmography and near-infrared spectroscopy and other physiological signals that may be related to pulse, but so far, there is still no effective and practical method or The device is applied to the actual rescue of out-of-hospital cardiac arrest patients

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