Multi-site noninvasive measurement of a physiological parameter

    公开(公告)号:US11504058B1

    公开(公告)日:2022-11-22

    申请号:US15824983

    申请日:2017-11-28

    Abstract: A patient monitor can noninvasively measure a physiological parameter using sensor data from different measurement sites on a patient. The patient monitor can combine all sensor data from different measurement sites into a raw or minimally processed data form to generate a single, robust measurement of the physiological parameter. An optical sensor of a patient monitor can include multiple photodetectors each configured to generate a signal when detecting light attenuated by the patient's tissue. A measurement of a physiological parameter can be determined based on at least in part on the multiple signals from the multiple photodetectors.

    PERFUSION TREND INDICATOR
    84.
    发明申请

    公开(公告)号:US20220330900A1

    公开(公告)日:2022-10-20

    申请号:US17587551

    申请日:2022-01-28

    Inventor: Ammar Al-Ali

    Abstract: A perfusion trend indicator inputs a plethysmograph waveform having pulses corresponding to pulsatile blood flow within a tissue site. Perfusion values are derived corresponding to the pulses. Time windows are defined corresponding to the perfusion values. Representative perfusion values are defined corresponding to the time windows. A perfusion trend is calculated according to differences between representative perfusion values of adjacent ones of the time windows.

    Flowometry in optical coherence tomography for analyte level estimation

    公开(公告)号:US11426105B2

    公开(公告)日:2022-08-30

    申请号:US16444960

    申请日:2019-06-18

    Abstract: Optical coherence tomography (herein “OCT”) based analyte monitoring systems are disclosed. In one aspect, techniques are disclosed that can identify fluid flow in vivo (e.g., blood flow), which can act as a metric for gauging the extent of blood perfusion in tissue. For instance, if OCT is to be used to estimate the level of an analyte (e.g., glucose) in tissue, a measure of the extent of blood flow can potentially indicate the presence of an analyte correlating region, which would be suitable for analyte level estimation with OCT. Another aspect is related to systems and methods for scanning multiple regions. An optical beam is moved across the surface of the tissue in two distinct manners. The first can be a coarse scan, moving the beam to provide distinct scanning positions on the skin. The second can be a fine scan where the beam is applied for more detailed analysis.

    OXIMETER PROBE OFF INDICATOR DEFINING PROBE OFF SPACE

    公开(公告)号:US20220225938A1

    公开(公告)日:2022-07-21

    申请号:US17576859

    申请日:2022-01-14

    Abstract: An embodiment of the present disclosure seeks to select characteristics of incoming intensity data that cause comparisons of selected characteristics to produce defined probe off space having reduced crossover with defined probe on space. Once defined, the present disclosure compares characteristics of incoming intensity data with the now defined probe off space, and in some embodiments, defined probe on space, to determine whether a probe off condition exists. When a processor determines a probe off condition exists, the processor may output or trigger an output signal that audibly and/or visually indicates to a user that the optical sensor should be adjusted for a proper application to a measurement site.

    WATER RESISTANT CONNECTOR FOR NONINVASIVE PATIENT MONITOR

    公开(公告)号:US20220216645A1

    公开(公告)日:2022-07-07

    申请号:US17403633

    申请日:2021-08-16

    Abstract: Systems and methods are provided for water resistant connectors. A male connector includes a rib or a draft angle that creates a seal when engaged with a female connector. A male connector includes an overmold that includes or is made of a thermoplastic elastomer. Male or female connectors include molds that include or are made of a thermoplastic polymer, such as polypropylene. A female connector includes spring contacts that fit within individual pockets of the female connector.

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