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    Blood pressure measuring device and method
    71.
    发明授权
    Blood pressure measuring device and method 有权

    公开(公告)号：US11642034B2

    公开(公告)日：2023-05-09

    申请号：US16653577

    申请日：2019-10-15

    Applicant: ViviPulse, LLC

    Inventor： Paul Yuan ,  Zhen Li

    IPC: A61B5/00 ,  A61B5/021

    CPC classification number: A61B5/021 ,  A61B5/0077 ,  A61B5/6826 ,  A61B5/742 ,  A61B5/7405 ,  A61B5/7455 ,  A61B5/7475 ,  A61B2562/0238 ,  A61B2562/0247

    Abstract: Blood pressure detection apparatuses and methods for detecting a blood pressure of a user are described comprising optical sensors/detectors and a force sensor and, in some embodiments, comprising only a force sensor, measuring force applied by a finger. Blood pressure is measured by applying an increasing (or decreasing) force or pressure with a finger of the user on at least the force sensor, which, in some embodiments, may be a plurality of increasing pressure steps, each step being held within a predetermined acceptable pressure/force tolerance range for a predetermined hold time, and measuring the force applied by the finger and, in some embodiments, optically measuring the blood in a vessel in the finger relating to the applied pressure/force. Feedback (visual, haptic, sound) of the applied pressure is provided to the user.

    A LIGHT-BASED SENSOR APPARATUS AND ASSOCIATED METHODS
    78.
    发明申请
    A LIGHT-BASED SENSOR APPARATUS AND ASSOCIATED METHODS 审中-公开

    公开(公告)号：US20180315883A1

    公开(公告)日：2018-11-01

    申请号：US15770277

    申请日：2016-10-07

    Applicant: Nokia Technologies Oy

    Inventor： Alexander BESSONOV ,  Darryl COTTON ,  Adam ROBINSON

    IPC: H01L31/173 ,  H01L31/113 ,  H01L31/024 ,  A61B5/0205 ,  A61B5/1455 ,  A61B5/00

    CPC classification number: H01L31/173 ,  A61B5/02433 ,  A61B5/14552 ,  A61B5/6826 ,  A61B2562/0233 ,  A61B2562/0238 ,  A61B2562/12

    Abstract: An apparatus (201) comprises a light emitter (202) and a photodetector (203) formed on a single fluid-permeable substrate (206) such that the photodetector (203) is able to detect light emitted by the light emitter (202) after interaction of the light with a user of the apparatus (201). The photodetector comprises a channel member (207) which may be made from graphene, respective source and drain electrodes (208, 209), a layer of photosensitive material (210) configured to vary the flow of electrical current through the channel member (207) on exposure to light from the light emitter (202), and a gate electrode (211). The apparatus (201) further comprises a layer of fluid-impermeable dielectric material (212) configured to inhibit a flow of electrical current between the channel member (207) and the gate electrode (211) of the photodetector (203) to enable the electrical conductance of the channel member (207) to be controlled by a voltage applied to the gate electrode (211) and to inhibit exposure of the light emitter (202) to fluid which has permeated through the fluid-permeable substrate (206). The layer of fluid-impermeable dielectric material (212) allows resilient substrates made from polymeric material to be used without the risk of damage to the overlying components caused by the permeated fluid. The dual functionality of the layer of fluid-impermeable dielectric material (212) reduces the number of fabrication steps used to form the apparatus (201) and results in a thinner, more compact device.

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