公开(公告)号：US20210361180A1

公开(公告)日：2021-11-25

申请号：US17396946

申请日：2021-08-09

Applicant: Jun-Chau Chien ,  Stanley Yuanshih Chen

Inventor： Jun-Chau Chien ,  Stanley Yuanshih Chen

IPC: A61B5/024 ,  A61B5/00 ,  A61B5/021 ,  A61B5/0507

Abstract: A near-field sensor method and device for obtaining biomedical information is disclosed. A transmission-line aperture arrangement configured to guide electromagnetic waves and emit near-field fringing energy, is placed near the skin. The transmission line is excited at a narrow-band Gigahertz frequency. The near-field fringing energy emitted by the sensor device penetrates at least partially into the skin and underlying blood vessels, and this energy is partially absorbed and partially phase shifted in a time varying manner according to the changes in tissue physiology. The status of the sensor device is monitored over a plurality of time intervals, and changes in both the phase and the amplitude of the signals passing though the transmission line are used to determine biomedical information such as heart rates, PTT, blood pressure, and glucose levels. Various transmission-line configurations, and various reference transmission-line methods to reduce low-frequency noise, are also discussed.

公开(公告)号：US20170135600A1

公开(公告)日：2017-05-18

申请号：US15344571

申请日：2016-11-06

Applicant: Jun-Chau Chien ,  Stanley Yuanshih Chen

Inventor： Jun-Chau Chien ,  Stanley Yuanshih Chen

IPC: A61B5/05 ,  A61B5/00 ,  A61B5/024

CPC classification number: A61B5/0507 ,  A61B5/02405 ,  A61B5/02438 ,  A61B5/6801 ,  A61B5/6887 ,  A61B5/6893 ,  A61B5/6898 ,  A61B5/7207 ,  A61B5/7225 ,  A61B5/742 ,  A61B2562/0228

Abstract: A near-field sensor method and device for obtaining cardiovascular information is disclosed. A transmission-line aperture arrangement configured to guide electromagnetic waves and emit near-field fringing energy, is placed near the skin. The transmission line is excited at a narrow-band Gigahertz frequency. The near-field fringing energy emitted by the sensor device penetrates at least partially into the skin and underlying blood vessels, and this energy is partially absorbed and partially phase shifted in a time varying manner according to the changes in physiology of the skin. The status of the sensor device is monitored over a plurality of time intervals, and changes in both the phase and the amplitude of the signals passing though the transmission line are used to determine the cardiovascular information such as heart rates. Various transmission-line configurations, and various reference transmission-line methods to reduce low-frequency noise, are also discussed.

公开(公告)号：US12036008B2

公开(公告)日：2024-07-16

申请号：US17396946

申请日：2021-08-09

Applicant: Jun-Chau Chien ,  Stanley Yuanshih Chen

Inventor： Jun-Chau Chien ,  Stanley Yuanshih Chen

IPC: A61B5/00 ,  A61B5/021 ,  A61B5/024 ,  A61B5/0507

CPC classification number: A61B5/02427 ,  A61B5/021 ,  A61B5/02438 ,  A61B5/0507 ,  A61B5/7203 ,  A61B2562/0295 ,  A61B2562/166

Abstract: A near-field sensor method and device for obtaining biomedical information is disclosed. A transmission-line aperture arrangement configured to guide electromagnetic waves and emit near-field fringing energy, is placed near the skin. The transmission line is excited at a narrow-band Gigahertz frequency. The near-field fringing energy emitted by the sensor device penetrates at least partially into the skin and underlying blood vessels, and this energy is partially absorbed and partially phase shifted in a time varying manner according to the changes in tissue physiology. The status of the sensor device is monitored over a plurality of time intervals, and changes in both the phase and the amplitude of the signals passing though the transmission line are used to determine biomedical information such as heart rates, PTT, blood pressure, and glucose levels. Various transmission-line configurations, and various reference transmission-line methods to reduce low-frequency noise, are also discussed.

公开(公告)号：US11083388B2

公开(公告)日：2021-08-10

申请号：US15344571

申请日：2016-11-06

Applicant: Jun-Chau Chien ,  Stanley Yuanshih Chen

Inventor： Jun-Chau Chien ,  Stanley Yuanshih Chen

IPC: A61B5/00 ,  A61B5/0507 ,  A61B5/024

Abstract: A near-field sensor method and device for obtaining cardiovascular information is disclosed. A transmission-line aperture arrangement configured to guide electromagnetic waves and emit near-field fringing energy, is placed near the skin. The transmission line is excited at a narrow-band Gigahertz frequency. The near-field fringing energy emitted by the sensor device penetrates at least partially into the skin and underlying blood vessels, and this energy is partially absorbed and partially phase shifted in a time varying manner according to the changes in physiology of the skin. The status of the sensor device is monitored over a plurality of time intervals, and changes in both the phase and the amplitude of the signals passing though the transmission line are used to determine the cardiovascular information such as heart rates. Various transmission-line configurations, and various reference transmission-line methods to reduce low-frequency noise, are also discussed.