Hamamatsu-Photonics K.k.

St. Marianna University School of Medicine

Yasuaki Koyama

Susumu Suzuki

Takeo Ozaki

A concentration measurement apparatus measures a temporal relative change amount (&#x394;cHb, &#x394;OHb) of either or both of total hemoglobin concentration and oxygenated hemoglobin concentration in the head that vary due to repetition of chest compression, and includes a light incidence section making measurement light incident on the head, a light detection section detecting the measurement light propagated through the interior of the head and generating a detection signal in accordance with the intensity of the measurement light, and a CPU determining, based on the detection signal, the relative change amount (&#x394;cHb, &#x394;OHb) and performing a filtering process of removing frequency components less than a predetermined frequency from frequency components contained in the relative change amount (&#x394;cHb, &#x394;OHb).

Growing community of inventors

Kawasaki, Japan

Yasuaki Koyama