Method and apparatus for non-invasively detecting blood volume imbalances in a mammalian subject

    公开(公告)号:US11890079B1

    公开(公告)日:2024-02-06

    申请号:US17156573

    申请日:2021-01-23

    发明人: Thomas Sandgaard

    摘要: Noninvasive methods and apparatus for detecting blood volume imbalances in a mammalian subject are disclosed. The method includes obtaining baseline measurements of at least three physiological parameters from a subject wherein the parameters are selected from the group consisting of heart rate, electrical body impedance, skin temperature, perfusion index, peripheral blood flow and skin humidity. Measurements of electrical body impedance, skin temperature, perfusion index, peripheral blood flow and skin humidity are taken at one or more extremities of the subject such as the calf, ankle, forearm, thigh, fingers and toes. The physiological parameters for which baseline measurements were obtained are then monitored to detect changes from the baseline measurements that indicate blood volume imbalances. A preferred embodiment comprises computing a baseline blood volume index from the baseline value measurements of each parameter to be monitored and then carrying out the step of monitoring by obtaining real time (current) value measurements of these parameters which are inputted into an algorithm which computes a real time (current) blood volume index based upon the differences between the baseline and real time (current) value measurements.

    MULTIPARAMETER NONINVASIVE SEPSIS MONITOR

    公开(公告)号:US20220202350A1

    公开(公告)日:2022-06-30

    申请号:US17566403

    申请日:2021-12-30

    摘要: A system for monitoring sepsis comprises one or more sensors that noninvasively monitor a patient to produce sensor data and processing circuitry to: derive, from the sensor data, one or more physiological parameters of the patient that are indicative of a sepsis state of the patient; apply a set of rules to the one or more physiological parameters; determine a sepsis state for the patient based on the set of rules applied to the one or more physiological parameters; and output at least one signal indicative of the sepsis state of the patient. The system includes an output device that outputs a notification based on the at least one signal.

    METHOD AND APPARATUS FOR NON-INVASIVELY DETECTING BLOOD VOLUME IMBALANCES IN A MAMMALIAN SUBJECT

    公开(公告)号:US20240148257A1

    公开(公告)日:2024-05-09

    申请号:US18413469

    申请日:2024-01-16

    发明人: Thomas Sandgaard

    IPC分类号: A61B5/02 A61B5/00 A61B5/0205

    摘要: Noninvasive methods and apparatus for detecting blood volume imbalances in a mammalian subject are disclosed. The method includes obtaining baseline measurements of at least three physiological parameters from a subject wherein the parameters are selected from the group consisting of heart rate, electrical body impedance, skin temperature, perfusion index, peripheral blood flow and skin humidity. Measurements of electrical body impedance, skin temperature, perfusion index, peripheral blood flow and skin humidity are taken at one or more extremities of the subject such as the calf, ankle, forearm, thigh, fingers and toes. The physiological parameters for which baseline measurements were obtained are then monitored to detect changes from the baseline measurements that indicate blood volume imbalances. A preferred embodiment comprises computing a baseline blood volume index from the baseline value measurements of each parameter to be monitored and then carrying out the step of monitoring by obtaining real time (current) value measurements of these parameters which are inputted into an algorithm which computes a real time (current) blood volume index based upon the differences between the baseline and real time (current) value measurements.

    MULTIPARAMETER NONINVASIVE SEPSIS MONITOR

    公开(公告)号:US20220202349A1

    公开(公告)日:2022-06-30

    申请号:US17566275

    申请日:2021-12-30

    发明人: Thomas Sandgaard

    IPC分类号: A61B5/00

    摘要: A system for monitoring sepsis comprises one or more sensors that noninvasively monitor a patient to produce sensor data and processing circuitry to: derive, from the sensor data, one or more physiological parameters of the patient that are indicative of a sepsis state of the patient; apply a set of rules to the one or more physiological parameters; determine a sepsis state for the patient based on the set of rules applied to the one or more physiological parameters; and output at least one signal indicative of the sepsis state of the patient. The system includes an output device that outputs a notification based on the at least one signal.

    Method and apparatus for non-invasively detecting blood volume imbalances in a mammalian subject

    公开(公告)号:US10898082B2

    公开(公告)日:2021-01-26

    申请号:US16198834

    申请日:2018-11-22

    发明人: Thomas Sandgaard

    摘要: Noninvasive methods and apparatus for detecting blood volume imbalances in a mammalian subject are disclosed. The method includes obtaining baseline measurements of at least three physiological parameters from a subject wherein the parameters are selected from the group consisting of heart rate, electrical body impedance, skin temperature, perfusion index, peripheral blood flow and skin humidity. Measurements of electrical body impedance, skin temperature, perfusion index, peripheral blood flow and skin humidity are taken at one or more extremities of the subject such as the calf, ankle, forearm, thigh, fingers and toes. The physiological parameters for which baseline measurements were obtained are then monitored to detect changes from the baseline measurements that indicate blood volume imbalances. A preferred embodiment comprises computing a baseline blood volume index from the baseline value measurements of each parameter to be monitored and then carrying out the step of monitoring by obtaining real time (current) value measurements of these parameters which are inputted into an algorithm which computes a real time (current) blood volume index based upon the differences between the baseline and real time (current) value measurements.