Title:
BLOOD FLOW SENSOR
Document Type and Number:
WIPO Patent Application WO/2016/092679
Kind Code:
A1
Abstract:
This blood flow sensor 1 can measure the flow speed of blood B passing through a transparent tube 40, and is provided with a light-emitting element 10 which emits a laser beam L, a reflective body 30 which reflects the beam L, and a light-receiving element 20 which receives light. The light-emitting element 10 emits the laser beam L in a direction that crosses the central axis 40a in a plane extending along the center axis 40a of the tube 40. The travelling beam L, emitted by the light-emitting element 10 and reflected by the tube 40, is reflected by the reflective body 30 in the direction opposite of the direction of travel. The light-receiving element 20 receives (non-Doppler-shifted) light of the beam L which has been reflected by the reflective body 30 and reflected again on the tube 40, and (Doppler-shifted) light of the beam L which has been emitted by the light emitting element 10 and reflected by a red blood cell R flowing through the tube 40.
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Inventors:
GOMEI TOMOO (JP)
HIRA EIJI (JP)
TOMOYASU NAOTO (JP)
HIRA EIJI (JP)
TOMOYASU NAOTO (JP)
Application Number:
PCT/JP2014/082886
Publication Date:
June 16, 2016
Filing Date:
December 11, 2014
Export Citation:
Assignee:
AICHI TOKEI DENKI KK (JP)
International Classes:
A61B5/026; G01P5/26
Domestic Patent References:
| WO2013153664A1 | 2013-10-17 |
Attorney, Agent or Firm:
KAI-U PATENT LAW FIRM (JP)
Patent business corporation KAI-U Patent Law Firm (JP)
Patent business corporation KAI-U Patent Law Firm (JP)
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