Wearable Sensing Device

Patent metadata

Field	Value
Publication number	US-2020405273-A1
Application number	US-201916968659-A
Country	US
Kind code	A1
Filing date	Feb 20, 2019
Priority date	Mar 12, 2018
Publication date	Dec 31, 2020
Grant date	—

Abstract

A base material is made of a flexible resin, and formed in the shape of a sheet provided with a hollow portion. The base material can be wrapped around, for example, a forearm, an upper arm, a wrist, or the like. A sweat absorption unit is made of a plurality of fibers, and is arranged at the hollow portion for taking up sweat that has been taken in by a suction port. The sweat absorption unit is made of, for example, paper made of cellulose. A sodium ion detection electrode, a potassium ion detection electrode, and a reference electrode are allowed to contact the sweat that has been suctioned from the suction port of the sweat absorption unit and taken up into the sweat absorption unit, to detect ions contained in the sweat.

First claim

1 .- 6 . (canceled)

7 . A wearable sensing device comprising:
a base material made of a flexible resin, wherein the base material comprises a hollow interior; a suction port on a first surface of the base material, the suction port is configured to absorb sweat into the hollow interior of the base material; a sweat absorber at the hollow interior and comprising of a plurality of fibers, the sweat absorber is configured to absorb the sweat from the suction port; a detection electrode configured to contact the sweat that has been absorbed by the sweat absorber and configured to detect ions contained in the sweat; a measurement chip configured to measure, by electrochemical measurement, a concentration of the ions detected by the detection electrode; and a battery serving as a power supply for the measurement chip.

8 . The wearable sensing device according to claim 7 , wherein the sweat absorber is made of paper.

9 . The wearable sensing device according to claim 7 , further comprising:
a connection hole on a second surface of the base material, wherein the battery is a water battery, and a positive electrode of the battery is in contact with the sweat absorber through the connection hole.

10 . The wearable sensing device according to claim 9 , wherein the positive electrode is allowed to contact the sweat absorbed into the sweat absorber.

11 . The wearable sensing device according to claim 7 , wherein the detection electrode comprises:
a sodium ion detection electrode configured to detect sodium ions; and a potassium ion detection electrode configured to detect potassium ions.

12 . The wearable sensing device according to claim 7 , wherein the measurement chip is equipped with a communication function for transmitting a measurement result of the measurement chip.

13 . The wearable sensing device according to claim 7 , wherein the measurement chip is disposed on the base material.

14 . The wearable sensing device according to claim 7 , wherein the base material has a sheet-like shape.

15 . A method comprising:
a base material made of a flexible resin, wherein the base material comprises a hollow interior; absorbing, by a suction port on a first surface of a base material, sweat into a hollow interior of the base material; absorbing, by a sweat absorber at the hollow interior, absorb the sweat from the suction port, wherein the sweat absorber comprises a plurality of fibers; contacting, by a detection electrode, the sweat that has been absorbed by the sweat absorber; detecting, by the detection electrode, ions contained in the sweat; and measuring, by a measurement chip and by electrochemical measurement, a concentration of the ions detected by the detection electrode.

16 . The method of claim 15 , wherein the base material, the suction port, the sweat absorber, the detection electrode, and the measurement chip are comprised in a wearable sensing device, and wherein the wearable sensing device further comprises a battery serving as a power supply for the measurement chip.

17 . The method according to claim 16 , wherein a connection hole is disposed on a second surface of the base material, wherein the battery is a water battery, and a positive electrode of the battery is in contact with the sweat absorber through the connection hole.

18 . The method according to claim 17 , wherein the positive electrode is allowed to contact the sweat absorbed into the sweat absorber.

19 . The method according to claim 15 , wherein the detection electrode comprises:
a sodium ion detection electrode configured to detect sodium ions; and a potassium ion detection electrode configured to detect potassium ions.

20 . The method according to claim 15 , further comprising:
transmitting, by the measurement chip, a measurement result of the measurement chip.

21 . The method according to claim 15 , wherein the measurement chip is disposed on the base material.

22 . The method according to claim 15 , wherein the sweat absorber is made of paper.

Assignees

• Nippon Telegraph & Telephone

Inventors

• Seyama Michiko
• Tanaka Yujiro

Classifications

• A61B5/14517

  for sweat · CPC title

• H01M12/04

  composed of a half-cell of the fuel-cell type and of a half-cell of the primary-cell type · CPC title

• H01M2004/028

  Positive electrodes · CPC title

• H01M6/30

  Deferred-action cells · CPC title

• H01M2220/30

  Batteries in portable systems, e.g. mobile phone, laptop · CPC title