Device for use in blood oxygen saturation measurement

    公开(公告)号:US11202582B2

    公开(公告)日:2021-12-21

    申请号:US16323560

    申请日:2017-08-07

    Abstract: The present invention relates to a device (10), system (1) and method (200) for use in blood oxygen saturation measurement of a subject. To enable blood oxygen saturation measurements with improved reliability, a processing device (10) is presented comprising an input (11) for receiving first and second detection data of a tissue region of the subject, said first detection data being data acquired over time by detecting radiation at a first wavelength (λ1) and at a second wavelength (λ2) received from said tissue region; said second detection data being data acquired over time by detecting radiation at the first wavelength and at the second wavelength received from said tissue region in response to coherent light at the first wavelength and coherent light at the second wavelength being emitted towards the tissue region; a PPG unit (12) for deriving, from said first detection data, a first PPG signal indicative of an absorption of light within the tissue region at the first wavelength, and a second PPG signal indicative of an absorption of light within the tissue region at the second wavelength; a flow unit (13) for deriving, from said second detection data, a first flow signal indicative of a flow of light scattering particles within the tissue region probed at the first wavelength, and a second flow signal indicative of a flow of light scattering particles within the tissue region probed at the second wavelength; and a processing unit (14) for correcting said PPG signals based on said flow signals and/or for providing a feedback signal based on a comparison of the first and second flow signals.

    Cardio pulmonary resuscitation quality feedback system

    公开(公告)号:US10327985B2

    公开(公告)日:2019-06-25

    申请号:US14911307

    申请日:2014-08-13

    Abstract: A system for providing feedback regarding chest compressions in CPR, an automated resuscitation device and a method for providing feedback regarding chest compressions in CPR, are based upon a quality measure for cardio pulmonary resuscitation. The system includes a measuring unit, a processor, an indicator unit, and a sensor and display. The measuring unit measures an arterial blood pressure of a patient. The processor calculates a blood pressure CPR quality index based on the measured blood pressure as a function of time. The indicator unit provides an indication of the blood pressure CPR quality indicator. The sensor registers a depth of compression of CPR and the display displays a signal indicating CPR compression depth as a function of time.

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