ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,543,962, issued on Feb. 10, was assigned to CYBERDYNE INC. (Tsukuba, Japan) and UNIVERSITY OF TSUKUBA (Tsukuba, Japan).
"Physiological state evaluation device" was invented by Yoshiyuki Sankai (Tsukuba, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A physiological state evaluation apparatus contacts an external auditory pore when mounted in a subject's auricle. The evaluation apparatus: collects sound vibrations generated from a larynx and a pharynx via a cartilage region of the external auditory pore; optically detects a pulsatory motion of blood through blood vessels and measures pulse rate and blood oxygen saturation, on the basis of a change ...