Title:
MASTICATION MONITORING DEVICE
Document Type and Number:
Japanese Patent JP3914480
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a mastication monitoring device for easily obtaining accurate measurement results.
SOLUTION: This mastication monitoring device includes a probe 2 mounted on a cheek to detect the reduced type hemoglobin concentration of a mastication muscle. A photo receiving sensor 22 of the probe 2 detects scattering light in the mastication muscle, and delivers a signal of photo-detectable quantity to a signal processing part 3. The signal processing part 3 calculates the reduced type hemoglobin concentration (a change with passage of time) from the signal of the photo-detectable quantity, and further calculates the output S (a change with passage of time) depending on the change with passage of reduced type hemoglobin concentration. A mastication frequency counting part 41 counts mastication times by detecting the peak in periodic change of a difference Sd between the output S and the moving average value Sma of the output S.
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Inventors:
Tsunehiko Takeuchi
Takehiro Kurono
Takehiro Kurono
Application Number:
JP2002221628A
Publication Date:
May 16, 2007
Filing Date:
July 30, 2002
Export Citation:
Assignee:
Hamamatsu Photonics Co., Ltd.
International Classes:
A61B5/11; G01N33/72; A61B5/00; A61B5/145; A61B5/1455; A61B5/22; G01N21/35; G01N33/02; (IPC1-7): A61B5/11; A61B5/145; G01N21/35; G01N33/02; //G01N33/72
Domestic Patent References:
| JP1270865A | ||||
| JP10011560A | ||||
| JP2002085432A |
Attorney, Agent or Firm:
Yoshiki Hasegawa
Tatsuya Shioda
Shiro Terasaki
Tatsuya Shioda
Shiro Terasaki
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