公开(公告)号：US20230130899A1

公开(公告)日：2023-04-27

申请号：US17821435

申请日：2022-08-22

Applicant: Apple Inc.

Inventor： Tao SHUI ,  Han BI ,  Na HUANG ,  Nilay D. JANI

IPC: A61B5/00 ,  A61B5/24

Abstract: Detecting user contact with one or more electrodes of a physiological signal sensor can be used to ensure physiological signals measured by the physiological signal sensor meet waveform characteristics (e.g., of a clinically accurate physiological signal). In some examples, a mobile and/or wearable device can comprise sensing circuitry, stimulation circuitry, and processing circuitry. The stimulation circuit can drive one or more stimulation signals on one or more electrodes, the resulting signal(s) can be measured (e.g., by the sensing circuitry), and the processing circuitry can determine whether a user is in contact with the electrode(s). Additionally or alternatively, in some examples, mobile and/or wearable device can comprise saturation detection circuitry, and the processing circuitry can determine whether the sensing circuitry is saturated.

公开(公告)号：US20240350088A1

公开(公告)日：2024-10-24

申请号：US18762300

申请日：2024-07-02

Applicant: Apple Inc.

Inventor： Tao SHUI ,  Han BI ,  Na HUANG ,  Nilay D. JANI

IPC: A61B5/00 ,  A61B5/24 ,  A61B5/30 ,  A61B5/304

CPC classification number: A61B5/6844 ,  A61B5/24 ,  A61B5/681 ,  A61B5/7203 ,  A61B5/7228 ,  A61B5/7475 ,  A61B5/30 ,  A61B5/304

Abstract: Detecting user contact with one or more electrodes of a physiological signal sensor can be used to ensure physiological signals measured by the physiological signal sensor meet waveform characteristics (e.g., of a clinically accurate physiological signal). In some examples, a mobile and/or wearable device can comprise sensing circuitry, stimulation circuitry, and processing circuitry. The stimulation circuit can drive one or more stimulation signals on one or more electrodes, the resulting signal(s) can be measured (e.g., by the sensing circuitry), and the processing circuitry can determine whether a user is in contact with the electrode(s). Additionally or alternatively, in some examples, mobile and/or wearable device can comprise saturation detection circuitry, and the processing circuitry can determine whether the sensing circuitry is saturated.

公开(公告)号：US20230414148A1

公开(公告)日：2023-12-28

申请号：US18465111

申请日：2023-09-11

Applicant: Apple Inc.

Inventor： Priyank Dineshbhai PATEL ,  Nilay D. JANI

IPC: A61B5/276 ,  H03K17/687 ,  A61B5/00 ,  A61B5/339

CPC classification number: A61B5/276 ,  H03K17/687 ,  A61B5/681 ,  A61B5/7221 ,  A61B5/6826 ,  A61B5/339 ,  A61B2562/0209

Abstract: Galvanic corrosion of an external electrode of a physiological signal sensor (e.g., ECG sensor) can be reduced. In some examples, protective circuitry, such as a switching circuit, can be used to reduce galvanic corrosion. In a first mode of operation (e.g., corresponding to measurement by the physiological signal sensor), the switching circuit can provide a low-impedance path (e.g., from an external electrode to ground). In a second mode of operation (e.g., corresponding to non-measurement by the physiological sensing system), the switching circuit can provide a high-impedance path to reduce leakage currents (e.g., between the external electrode and ground), and thereby reduce galvanic corrosion.

公开(公告)号：US20200077955A1

公开(公告)日：2020-03-12

申请号：US16565127

申请日：2019-09-09

Applicant: Apple Inc.

Inventor： Tao SHUI ,  Han BI ,  Na HUANG ,  Nilay D. JANI

IPC: A61B5/00

Abstract: Detecting user contact with one or more electrodes of a physiological signal sensor can be used to ensure physiological signals measured by the physiological signal sensor meet waveform characteristics (e.g., of a clinically accurate physiological signal). In some examples, a mobile and/or wearable device can comprise sensing circuitry, stimulation circuitry, and processing circuitry. The stimulation circuit can drive one or more stimulation signals on one or more electrodes, the resulting signal(s) can be measured (e.g., by the sensing circuitry), and the processing circuitry can determine whether a user is in contact with the electrode(s). Additionally or alternatively, in some examples, mobile and/or wearable device can comprise saturation detection circuitry, and the processing circuitry can determine whether the sensing circuitry is saturated.