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    NON-INVASIVE BLOOD PRESSURE MEASUREMENT TECHNIQUES BASED ON WAVE SHAPE CHANGE DURING AN EXTERNAL PRESSURE CYCLE
    3.
    发明申请
    NON-INVASIVE BLOOD PRESSURE MEASUREMENT TECHNIQUES BASED ON WAVE SHAPE CHANGE DURING AN EXTERNAL PRESSURE CYCLE 有权

    公开(公告)号：US20220400959A1

    公开(公告)日：2022-12-22

    申请号：US17354775

    申请日：2021-06-22

    Applicant: Apple Inc.

    Inventor： Robert K. Montgomery, II ,  Chin San Han

    IPC: A61B5/022 ,  A61B5/021 ,  A61B3/16

    Abstract: Embodiments include systems and methods for determining blood pressure of a user. Embodiments can include a restriction device that is configured to apply an external pressure cycle to a blood vessel of the user and a pressure sensing device that is configured to detect pressures within the blood vessel during the external pressure cycle and output a signal indicative of the detected pressures. Embodiments can also include a processing device that is configured to receive the signal from the pressure sensing device, determine a first set of pressure values corresponding to minimum pressure values for each pulse pressure wave and determine a second set of pressure values corresponding to pressure upstrokes that occur during a descending pressure phase of a respective pulse pressure wave. The system can determine a blood pressure parameter of the user based on the first set of pressure values and the second set of pressure values.

    Multi-Element Piezo Sensors for Physiological Measurements
    4.
    发明申请
    Multi-Element Piezo Sensors for Physiological Measurements 有权

    公开(公告)号：US20220254984A1

    公开(公告)日：2022-08-11

    申请号：US17730841

    申请日：2022-04-27

    Applicant: Apple Inc.

    Inventor： Chin San Han ,  German A. Alvarez ,  Santiago Quijano ,  Stuart W. Wenzel

    IPC: H01L41/113 ,  H01L41/047 ,  A61B5/00 ,  H01L41/083 ,  H01L41/08 ,  G01L1/16 ,  A61B5/11 ,  G01L1/20

    Abstract: Disclosed herein are monitoring systems and sensors for physiological measurements. The sensors can be multi-element piezo sensors capable of generating multiple electrical signals, whereby the monitoring systems can receive the multiple electrical signals to analyze the user's vital signs along multiple regions of the user's body. In some examples, the piezo sensor can include one or more corrugations, such as peaks and valleys, to create localized regions with increased mechanical response to force. The sensitivity and resolution of the piezo sensor can be enhanced by further locating electrode sections at the corrugations, where the electrode sections can be electrically isolated and independently operable from other electrode sections. Traces electrically connecting an electrode section to, e.g., an off-panel controller can be routed over and/or around other electrode sections by including an insulator to electrically insulate from the other electrode sections, or by using vias to route through one or more layers.

    Dynamically reconfigurable apertures for optimization of PPG signal and ambient light mitigation
    8.
    发明授权
    Dynamically reconfigurable apertures for optimization of PPG signal and ambient light mitigation 有权

    公开(公告)号：US11166641B2

    公开(公告)日：2021-11-09

    申请号：US16123183

    申请日：2018-09-06

    Applicant: Apple Inc.

    Inventor： Chin San Han

    IPC: A61B5/024 ,  A61B5/00 ,  A61B5/1455

    Abstract: This relates to an electronic device with dynamically reconfigurable apertures to account for different skin types, usage conditions, and environmental conditions and methods for measuring the user's physiological signals. The device can include one or more light emitters, one or more light sensors, and a material whose optical properties can be changed in one or more locations to adjust the optical path and the effective separation distances between the one or more light emitters and one or more light sensors or the size, location, or shape of the one or more dynamically reconfigurable apertures. In some examples, the material can be a liquid crystal material, MEMS shutter layer, or light guide, which can form the one or more dynamically reconfigurable apertures. In some examples, the light emitters or light sensors or both can be an array of individually addressable optical components.

    Multi-mode sensor for surface orientation
    9.
    发明授权
    Multi-mode sensor for surface orientation 有权

    公开(公告)号：US10317200B1

    公开(公告)日：2019-06-11

    申请号：US15275032

    申请日：2016-09-23

    Applicant: Apple Inc.

    Inventor： Chin San Han ,  Brian R. Land

    IPC: G01C3/08 ,  G01B11/26 ,  G01B11/06 ,  G06F3/03 ,  G06F1/16 ,  G06F3/041

    Abstract: The present disclosure relates generally to wearable devices and methods for detecting relative surface orientation. The wearable devices and methods may include a multi-mode sensor comprising emitter-detector combinations (e.g., sets or pairs) that have various spacings between the light emitter and the photodetector. Proximity curves can be generated based upon the various emitter-detector pair spacings, and used to assess surface distance and angular orientation of the wearable device to a body surface of an individual. In some variations, location and/or orientation of the device relative to the body surface is determined based on mapping data acquired by one or more emitter-detector pairs to surface distance (z distance) values based on proximity curve data stored in a memory of a device controller.

    Dynamically reconfigurable apertures for optimization of PPG signal and ambient light mitigation
    10.
    发明授权
    Dynamically reconfigurable apertures for optimization of PPG signal and ambient light mitigation 有权

    公开(公告)号：US10117587B2

    公开(公告)日：2018-11-06

    申请号：US15139133

    申请日：2016-04-26

    Applicant: Apple Inc.

    Inventor： Chin San Han

    IPC: A61B5/024 ,  A61B5/00 ,  A61B5/1455

    Abstract: This relates to an electronic device with dynamically reconfigurable apertures to account for different skin types, usage conditions, and environmental conditions and methods for measuring the user's physiological signals. The device can include one or more light emitters, one or more light sensors, and a material whose optical properties can be changed in one or more locations to adjust the optical path and the effective separation distances between the one or more light emitters and one or more light sensors or the size, location, or shape of the one or more dynamically reconfigurable apertures. In some examples, the material can be a liquid crystal material, MEMS shutter layer, or light guide, which can form the one or more dynamically reconfigurable apertures. In some examples, the light emitters or light sensors or both can be an array of individually addressable optical components.

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