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BLOOD-PRESSURE SENSOR SYSTEM

  • US 20110098579A1
  • Filed: 09/30/2010
  • Published: 04/28/2011
  • Est. Priority Date: 10/26/2009
  • Status: Abandoned Application
First Claim
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1. A blood-pressure sensor system comprising a blood-pressure sensor including:

  • a photoelectric conversion element which converts light incident to a light-receiving plane into an electrical signal and outputs the electrical signal; and

    a plurality of structures which are separately disposed on the light-receiving plane at predetermined intervals and each of which is made of a conductive material that induces surface plasmons,wherein when the blood-pressure sensor is attached to an outer wall of a blood vessel, the intervals of the structures are changed to expanding an opening or to be tapered according to expansion or contraction of the blood vessel due to a change in the blood pressure of the blood vessel, so that a form of light incident to the structures is changed to cause a change in the output from the photoelectric conversion element, andindex calculation is performed on the output measured as an open circuit voltage, and a blood pressure value is obtained using a result of the index calculation and information where the indexes and the blood pressure values are associated with each other.

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