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Probe for use in measuring a biological signal and biological signal measuring system incorporating the probe

  • US 20040024326A1
  • Filed: 08/04/2003
  • Published: 02/05/2004
  • Est. Priority Date: 08/02/2002
  • Status: Active Grant
First Claim
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1. A probe for use in photoplethysmographic (PPG) measurement, comprising:

  • a light source unit including a light source that contacts a predetermined site of an object and emits light onto the predetermined site;

    a photodetector unit positioned facing the light source unit to receive the light emitted from the light source unit and transmitted through the object;

    a body having a space for receiving the object and in which the light source unit and the photodetector unit are positioned in a same optical axis; and

    a pressure application unit coupled to the body for applying a pressure to the object via the light source unit.

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