Title:
DEVICE FOR MEASURING BLOOD FLOW IN SPINAL CANAL
Document Type and Number:
WIPO Patent Application WO/2015/019660
Kind Code:
A1
Abstract:
[Problem] To provide a device for measuring blood flow in the spinal canal, the device being capable of being inserted into the spinal canal and easily measuring with high precision the amount of blood flow in the blood vessels supplying blood to the spinal cord. [Solution] Inside a catheter (11), which is provided with a tip section (11a) that can be placed in the spinal canal, a light-emitting optical fiber (12) and a light-receiving optical fiber (13) are provided so as to extend along the direction in which catheter (11) extends. The light-emitting optical fiber (12) is configured so as to be capable of emitting laser light from a light-emitting section (12a) at the tip and the light-receiving optical fiber (13) so as to be capable of receiving scattered light from the light-receiving section (13a) at the tip. A light-reflecting means (14) is disposed on an extension of the tips of the light-emitting optical fiber (12) and the light-receiving optical fiber (13). The light-reflecting means (14) is provided so as to reflect laser light from the light-emitting section (12a) and emit the light in a roughly orthogonal direction to the direction in which the spinal cord extends, and to reflect the scattered light from the roughly orthogonal direction to the direction in which the spinal cord extends and receive the light in the light-receiving section (13a).
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Inventors:
SAIKI YOSHIKATSU (JP)
HAYATSU YUKIHIRO (JP)
HAGA YOICHI (JP)
MATSUNAGA TADAO (JP)
HAYATSU YUKIHIRO (JP)
HAGA YOICHI (JP)
MATSUNAGA TADAO (JP)
Application Number:
PCT/JP2014/058500
Publication Date:
February 12, 2015
Filing Date:
March 26, 2014
Export Citation:
Assignee:
UNIV TOHOKU (JP)
International Classes:
A61B5/0285; A61B5/026
Foreign References:
| JP2010284304A | 2010-12-24 | |||
| JPH10118039A | 1998-05-12 | |||
| JP2006317319A | 2006-11-24 |
Other References:
TADAO MATSUNAGA ET AL.: "A Drainage Catheter with Ultrasound sensor for Monitoring of Spinal Cord Ischemia", THE INSTITUTE OF ELECTRICAL ENGINEERS OF JAPAN KENKYUKAI SHIRYO BIO .MICRO SYSTEM KENKYUKAI, vol. BMS-09, 23 July 2009 (2009-07-23), pages 79 - 82
YOSHIKATSU SAIKI: "Shinzo Kekkan Geka Ryoiki ni Okeru Last Frontier", TOHOKU IGAKU ZASSHI, vol. 123, no. 2, 25 December 2011 (2011-12-25), pages 185 - 187
YOSHIKATSU SAIKI: "Shinzo Kekkan Geka Ryoiki ni Okeru Last Frontier", TOHOKU IGAKU ZASSHI, vol. 123, no. 2, 25 December 2011 (2011-12-25), pages 185 - 187
Attorney, Agent or Firm:
SUDA Atsushi et al. (JP)
Atsushi Suda (JP)
Atsushi Suda (JP)
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