Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1996-08-29
1998-05-26
Porta, David P.
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
128633, A61B 500
Patent
active
057570027
ABSTRACT:
A light source pa light of a plurality of wavelengths of a near infrared region, and a spectroscopic part selects a wavelength subjected to absorption by lactic acid as a measuring wavelength from measuring light of a plurality of wavelengths emitted from the light source part. A probe comes into contact with an organism measuring portion and irradiates the organism measuring portion with the measuring light of the wavelength selected by the spectroscopic part, while a photoreceiving part detects transmitted/scattered light of the measuring light incident upon the organism measuring portion. A light signal detected by the photoreceiving part is converted to absorbance in a signal processing part, so that the concentration of lactic acid is calculated by a host computer serving as an arithmetic-control part and displayed on a display part. No reagent is required, while difference between lactic acid concentrations varied with measuring portions can also be noninvasively measured.
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Matsuoka Koji
Okuda Hisashi
Xu Kexin
Yamasaki Yutaka
Hanig Richard
Kyoto Dai-Ichi Kagaku Co., Ltd.
Porta David P.
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