Devices and systems for real-time recognition of restoration of spontaneous circulation (ROSC) in cardio-pulmonary resuscitation (CPR) process

A restoration of spontaneous circulation (ROSC) recognition and post-ROSC circulation quality evaluation system, comprising:

• an ROSC recognition device and a post-ROSC circulation quality evaluation apparatus for evaluating post-ROSC circulation quality;
• the ROSC recognition device comprises:
• a signal acquisition apparatus comprising a sensor for blood oxygen saturation
• detection based upon light absorption and acquiring pulse oximetry waveform signals of a patient, at least one pulse oximetry waveform comprising a manual compression waveform signal and a spontaneous circulation waveform signal;
• and
• a signal analysis apparatus comprising a frequency-domain recognition logic for analyzing the pulse oximetry waveform signals in a frequency domain to identify a first frequency and a first amplitude for the manual compression waveform signal and a second frequency and a second amplitude for the spontaneous circulation waveform signal to determine whether there is ROSC in the CPR by detecting time-varying features of spectral peaks of the signals including the second frequency and the second amplitude of the spontaneous circulation waveform signal in the frequency domain.

A restoration of spontaneous circulation (ROSC) feedback system in a cardio-pulmonary resuscitation (CPR) process, comprising:

• an ROSC recognition and post-ROSC circulation quality evaluation apparatus configured to recognize ROSC in the CPR process in real time from pulse oximetry waveform signals derived from a pulse oximeter, and to evaluate post-ROSC circulation quality, at least one pulse oximetry waveform signal comprising a manual compression waveform signal and a spontaneous circulation waveform signal, said apparatus being further configured to evaluate stability of the post-ROSC circulation quality, wherein the ROSC recognition and post-ROSC circulation quality evaluation apparatus comprises a frequency-domain recognition logic provided for analyzing the pulse oximetry waveform signals in a frequency domain to identify a first frequency and a first amplitude for the manual compression waveform signal and a second frequency and a second amplitude for the spontaneous circulation waveform signal to determine whether there is ROSC in the CPR process by detecting time-varying features of spectral peaks of the sampled signals including the second frequency and the second amplitude of the spontaneous circulation waveform signal in the frequency domain;
• and
• a CPR apparatus for providing compression output to a patient;
• wherein, upon detection of the ROSC, the ROSC recognition and post-ROSC circulation quality evaluation apparatus controls the CPR apparatus to stop compression output and start the post-ROSC circulation quality evaluation;
• wherein, when the post-ROSC circulation quality is evaluated to be unstable, the ROSC recognition and post-ROSC circulation quality evaluation apparatus controls the CPR apparatus to restart the compression output, and restarts the real-time recognition of ROSC.

A device for real-time recognition of restoration of spontaneous circulation (ROSC) in a cardio-pulmonary resuscitation (CPR) process, comprising:

• a signal acquisition apparatus comprising a sensor for blood oxygen saturation
• detection based upon light absorption and acquiring pulse oximetry waveform signals of a patient, at least one pulse oximetry waveform signal comprising a manual compression waveform signal and a spontaneous circulation waveform signal;
• and
• a signal analysis apparatus comprising a time-domain recognition logic provided for analyzing the pulse oximetry waveform signals in a frequency domain to identify a first frequency and a first amplitude for the manual compression waveform signal and a second frequency and a second amplitude for the spontaneous circulation waveform signal to determine whether there is ROSC in the CPR process by detecting time-varyinq features of spectral peaks of the sampled signals including the second frequency and the second amplitude of the spontaneous circulation waveform signal in the frequency domain;
• said time-domain recognition logic provided for determining whether there is ROSC in the CPR process by detecting a time envelope of the signals in the time domain and determining that there is ROSC when continuous and regular envelope features are recognized.