Fiber Optic Laser Blood Flowmeter OMEGAFLO

The laser tissue blood flowmeter, OMEGAFLO series, is an instrument for measuring tissue blood flow, blood volume and blood flow velocity of skin, brain, internal organs, etc..

OMEGAFLO can measure the blood flow continuously and non-invasively, compared to H2 and Xe clearance method , and is widely used from in fundamental research to in clinical applications.
The OMEGAFLO uses a laser diode having the wavelength hardly affected by the difference of absorption due to the oxy – deoxy condition of erythrocytes. The measurement depth is about 1 mm from tissue surface. The OMEGAFLO shows and outputs three parameters, tissue blood flow, tissue blood volume and blood flow velocity, and it is easy to understand the tissue condition under study by these parameters.

  • Non-Contact


  • Contact



  1. Tissue blood flow, volume and flow velocity can be measured.
  2. Non-invasive and continuous measurement
  3. Measurement without contacting a probe on tissue (FLO-N1)
  4. Wide variety of probes

Laser – probe unit of FLO-C1EL


  • Blood flow is operated based on FFT by software. Operation frequency range can be set by users.
  • Non-contact model(FLO-N1)

    Blood flow can be measured without contacting a probe. Tissue can be treated during measuring blood flow. Soft tissue, wound and mucous can be measured.

  • Conventional (FLO-C1)

    Fiber optic probe is attached on tissue. Many kind of probes can be sued. Thinnest : φ0.25mm×2

  • Fast blood flow model(FLO-C1 BV)

    Detection rage is 5 times of FLO-C1. For fast blood flow measurement.

  • Microscope model(FLO-C1 EL) :

    Laser is directly irradiated on tissue on a microscope and the scattered light is detected by a probe through or without the microscope.


For FLO-N1(Non-contact)
Non-contact probes and contact probes can be used.
For FLO-C1
Contact probes can be used. DS(disk shape), NS(needle shape) and GJ(joint probe)are popular.
All contact probes can be used.
Special probe is set with the instrument.:
For Flo-Lab
All contact probes can be used.
  • Non-contact standard probe ST-N

    Non-contact standard probe

  • Disk shape probe DS

    Disk shape probe

  • Needle shape probe NS

    Needle shape probe

  • Joint probe GJ + JF

    Joint probe
    GJ + JF

Probe list for OMEGAEFLO


Laser for measurement
Wavelength : 780nm, Semiconductor laser, CLASS1
Laser for pointer (only for FLO-N1)
Wavelength : 650nm, Semiconductor laser, CLASS1
  1. Tissue Blood Flow (FLOW)
    FLO-N1, FLO-C1 : 0 - 100.0 (mL/min/100g equivalent)
    FLO-C1BV, FLO-C1EL : 0 - 1000 (mL/min/100g equivalent)
    FLO-Lab : Selection from 0 - 10, 0 - 100 & 0 -1000 (mL/min/100g equivalent) 
  2. Tissue Blood Volume (MASS)
    Except FLO-Lab
    0 - 2000 (arbitrary unit)
  3. Blood Flow Velocity (VEL.)
    Except FLO-Lab
    FLO-N1, FLO-C1 : 0 - 10.00 (KHz)
    FLO-C1BV, FLO-C1EL : 0 - 100.0 (KHz)
Measurement area
FLO-N1 : MAX inside 15mm circle
FLO-C1, FLO-C1BV, FLO-Lab : inside about 1 mm circle
FLO-C1EL : inside about 0.5mm ellipse
Measurement depth
about 0.5 - 1 mm (depens on tissue)
0 -10V Analog
Time constant
FLO-N1, FLO-C1, FLO-C1EL : 0.1, 1, 3 sec
FLO-C1BV : 0.01, 0.1, 1 sec
FLO-Lab : Averaging on FFT
Optialc connector
Optical fiber probe
100/140µm, GI
100 - 220 V AC
about 257 x 70 x 322 (WxHxD)
about 4.5 kg

Caution : The analog outputs on the rear panel can be directly connected to a pen recorder, but to show the data on a computer display an A/D converter is needed.

Fiber Optic Laser Blood Flowmeter OMEGAFLO  Summary / Spec | Theory | Price List