近赤外光による血管位置検出とその画像化(G02-5 計測・生体材料・モデリング,G02 バイオエンジニアリング部門)

概要

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Blood-sampling is routine work in clinics. If blood-sampling is skillfully automated, not only pain of patients but also labor or risk of technicians must be reduced. Detecting and imaging of blood vessels is an essential technique to realize automatic blood-sampling. The purpose of this study is to detect the suitable spot in the blood vessel using near-infrared irradiation. A beam of near-infrared ray was irradiated from the skin. The reflection light was detected by a phototransistor. Blood vessels were distinguished by the uneven distribution of the absorption ratio of the light. The strength of the reflection, which was detected by the phototransistor, was digitized by an A-D converter. Mapping of the data was performed in the personal computer. To shorten the scanning period, 20 pairs of the LEDs and the phototransistors were assembled in a probe.
社団法人日本機械学会の論文
2004-09-04