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LASER DOPPLER BLOOD FLOW MEASURING METHOD AND DEVICE

外国特許コード F130007525
掲載日 2013年7月16日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2008JP073245
国際公開番号 WO 2009/081883
国際出願日 平成20年12月19日(2008.12.19)
国際公開日 平成21年7月2日(2009.7.2)
優先権データ
  • 特願2007-330112 (2007.12.21) JP
発明の名称 (英語) LASER DOPPLER BLOOD FLOW MEASURING METHOD AND DEVICE
発明の概要(英語)

Seat light beams (Ls) are formed by a cylindrical lens (22) from divided laser light from a semiconductor laser (12) and cross each other at a predetermined position. A lens system (30) for linearly focusing scattered light at a linear irradiation site (Lx) at which the seat light beams (Ls) cross each other is provided. An optical fiber array (32) of optical fibers (34) is disposed at a focusing position of the lens system (30). An avalanche photodiode (42) for converting the scattered light which is Doppler frequency-shifted by a blood flow into an electrical signal for each of the optical fibers (34) is provided. There are provided a laser Doppler blood flow measuring method and device capable of efficient multidimensional measurement in a wide range with high measurement accuracy for carrying out scanning while computing the blood flow rate in biological tissue at the linear irradiation site (Lx) for each of the optical fibers (34) from the Doppler frequency-shifted scattered light of the laser light and calculating the blood flow rate in a blood vessel in a predetermined region within a biological body.

  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • INSTITUTE OF NATIONAL COLLEGES OF TECHNOLOGY, JAPAN,
  • NATIONAL UNIVERSITY CORPORATION UNIVERSITY OF TOYAMA,
  • HACHIGA, TADASHI,
  • ISHIDA, HIROKI,
  • AKIGUCHI, SHUNSUKE,
  • SHIRAKAWA, HIROKI,
  • ANDOH, TSUGUNOBU,
  • KURAISHI, YASUSHI
  • 発明者(英語)
  • HACHIGA, TADASHI,
  • ISHIDA, HIROKI,
  • AKIGUCHI, SHUNSUKE,
  • SHIRAKAWA, HIROKI,
  • ANDOH, TSUGUNOBU,
  • KURAISHI, YASUSHI
国際特許分類(IPC)

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