LASER SENSOR FOR ULTRA-FINE PARTICLE SIZE DETECTION

    公开(公告)号:US20200292435A1

    公开(公告)日:2020-09-17

    申请号:US16086046

    申请日:2017-03-21

    Abstract: The invention describes a laser sensor module (100) for detecting ultra-fine particles (10) with a particle size of 300 nm or less, more preferably 200 nm or less, most preferably 100 nm or less, the laser sensor module (100) comprising: —at least one laser (110) being adapted to emit laser light to at least one focus region in reaction to signals provided by at least one electrical driver (130),—at least one detector (120) being adapted to determine a self-mixing interference signal of an optical wave within a laser cavity of the at least one laser (110), wherein the self-mixing interference signal is caused by reflected laser light reentering the laser cavity, the reflected laser light being reflected by a particle receiving at least a part of the laser light,—the laser sensor module (100) being arranged to perform at least one self-mixing interference measurement,—the laser sensor module (100) being adapted to determine a first particle size distribution function with a first sensitivity by means of at least one measurement result determined based on the at least one self-mixing interference measurement, the laser sensor module being further adapted to determine a second particle size distribution function with the second sensitivity, the second sensitivity being different from the first sensitivity,—the at least one evaluator (140) being adapted to determine a particle measure of the particle size of 300 nm or less by subtracting the second particle size distribution function multiplied with a calibration factor q from the first particle size distribution function. The invention further describes a corresponding method and computer program product. The invention enables a simple and low-cost particle detection module or particle detector based on laser self-mixing interference which can detect particles with a size of 100 nm or even less.

    SYSTEMS AND METHODS FOR VENTILATOR MANAGEMENT

    公开(公告)号:US20250152879A1

    公开(公告)日:2025-05-15

    申请号:US18722218

    申请日:2022-12-19

    Abstract: A system for managing mechanical ventilation provided to a patient by a ventilator. The system includes a plurality of electrodes for being adhered to the patient's chest and a controller in communication with the plurality of electrodes, the controller being programmed to determine from signals received from the electrodes metrics of the patient including: a measure of breathing effort of the patient, and one or both of a heart rate of the patient and/or a respiration rate of the patient. The system further includes a user interface in communication with the controller. The controller is adapted to communicate the metrics to the user interface which is adapted to receive and concurrently display a representation of the measure of breathing effort of the patient on the display; and/or control operation of the ventilator and utilize the measure of breathing effort of the patient in a control algorithm governing such operation.

    MULTI-ELECTRODE PATCH FOR MYOTRACE MEASUREMENT

    公开(公告)号:US20250049380A1

    公开(公告)日:2025-02-13

    申请号:US18720819

    申请日:2022-12-16

    Abstract: A streamlined system for non-invasively determining a neural respiratory drive (NRD) index of a patient includes an EMG patch that provides three integrated EMG electrodes: two signal EMG electrodes to be positioned in the second intercostal space on either side of the sternum and one reference EMG electrode to be positioned on the sternum above the two signal electrodes. The integration of all three EMG electrodes in a single patch enables clinicians to spend less time determining where to place the patch than they would if they had to determine the proper positioning of three single EMG electrodes. In addition, the disclosed system provides a single cable that can electrically connect to all three EMG electrodes when inserted into a plug on the EMG patch, thereby reducing cable clutter that would otherwise result from having to provide a separate cable for each EMG electrode.

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