OXYGEN SATURATION MEASUREMENT DEVICE, OXYGEN SATURATION MEASUREMENT METHOD, AND OXYGEN SATURATION MEASUREMENT PROGRAM

WIPO Patent Application WO/2024/085041

A1

This oxygen saturation measurement device determines, on the basis of a peak timing and a bottom timing during a single pulsation in a third pulse wave signal corresponding to the light intensity of received reference light the oxyhemoglobin absorption coefficient and the deoxyhemoglobin absorption coefficient of which have a higher wavelength than those of red light and infrared light, a first light projection timing at which a first light-emitting element projects the red light, and a second light projection timing at which a second light-emitting element projects the infrared light, causes the first light-emitting element to project the red light at the first light projection timing, causes the second light-emitting element to project the infrared light at the second light projection timing, and measures artery oxygen saturation on the basis of a first pulse wave signal which has been output by a light-receiving element in accordance with the red light projected at the first light projection timing, and a second pulse wave signal which has been output by the light-receiving element in accordance with the infrared light projected at the second light projection timing.

KUBO MITSUAKI (JP)
KOIZUMI MASAYUKI (JP)
KAWACHI MASAHIRO (JP)
MATSUI YUKI (JP)
YAMAMOTO KAZUO (JP)
KIGUCHI TETSUYA (JP)
ARAKAWA MASAYUKI (JP)
OHASHI SUGURU (JP)

PCT/JP2023/036931

April 25, 2024

October 11, 2023

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OMRON TATEISI ELECTRONICS CO (JP)

A61B5/1455

JP2022117113A	2022-08-10
JP2020130875A	2020-08-31

TAIYO, NAKAJIMA & KATO (JP)

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