US 11,717,216 B2
Wearable body fat combustion measurement device
Do Joon Yoo, Seongnam-si (KR)
Assigned to SENTECH KOREA CORP., Paju-si (KR)
Appl. No. 16/611,587
Filed by SENTECH KOREA CORP., Paju-si (KR)
PCT Filed May 4, 2018, PCT No. PCT/KR2018/005186
§ 371(c)(1), (2) Date Nov. 7, 2019,
PCT Pub. No. WO2018/208050, PCT Pub. Date Nov. 15, 2018.
Claims priority of application No. 10-2017-0057142 (KR), filed on May 8, 2017.
Prior Publication US 2020/0155064 A1, May 21, 2020
Int. Cl. A61B 5/00 (2006.01); A61B 5/145 (2006.01)
CPC A61B 5/4872 (2013.01) [A61B 5/14517 (2013.01); A61B 5/7271 (2013.01); A61B 5/6831 (2013.01); A61B 2562/029 (2013.01); A61B 2562/0271 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A wearable body fat combustion measurement device, comprising:
a housing including a first chamber with an opening and a second chamber separated from the first chamber and configured to receive an ambient air;
a fixing means attached to the housing and configured to bring the housing into contact with a user's skin in a state in which the opening of the first chamber faces the user's skin;
a measurement sensor disposed inside the first chamber and configured to generate an electrical signal according to an amount of acetone contained in a gas evaporated from sweat discharged from the user's skin and introduced into the first chamber through the opening;
a reference sensor disposed outside the first chamber and configured to generate an electrical signal according to a concentration of a gas component contained in the ambient air of the second chamber and detectable by the measurement sensor; and
a signal processor configured to process the electrical signals received from the measurement sensor and the reference sensor,
wherein the signal processor calculates a concentration of acetone by using the electrical signal received from the measurement sensor, calculates the concentration of the gas component contained in the ambient air and detectable by the measurement sensor by receiving the electrical signal from the reference sensor, and ignores the electrical signal received from the measurement sensor if the concentration of the gas component exceeds a predetermined value, and
the first chamber is sealed with respect to the second chamber.