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Blood pressure measuring apparatus

  • US 7,572,227 B2
  • Filed: 09/20/2007
  • Issued: 08/11/2009
  • Est. Priority Date: 04/08/2005
  • Status: Active Grant
First Claim
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1. A blood pressure measuring apparatus comprising:

  • an inner cuff to be inserted into an ear hole, and an outer cuff to be positioned outside a tragus;

    holding means for holding said inner cuff and said outer cuff;

    pulse wave detecting means incorporated into at least one of said inner cuff and said outer cuff to detect a pulse wave signal obtained by light from blood flowing through a blood vessel;

    pressurizing/depressurizing means for pressurizing and depressurizing said inner cuff and said outer cuff by using a fluid, after said inner cuff and said outer cuff clamp the tragus;

    a tube connected from said inner cuff and said outer cuff to said pressurizing/depressurizing means to supply the fluid;

    pressure detecting means connected to said tube to detect pressures of said inner cuff and said outer cuff; and

    blood pressure measurement control means for measuring a blood pressure value from the pulse wave signal,wherein said inner cuff and said outer cuff oppose each other, and a thickness of a lid portion of each of said inner cuff and said outer cuff is made larger than a thickness of a cylindrical portion.

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