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Noninvasive sphygmomanometer

  • US 7,008,379 B2
  • Filed: 10/10/2003
  • Issued: 03/07/2006
  • Est. Priority Date: 11/08/2002
  • Status: Expired due to Fees
First Claim
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1. A noninvasive sphygmomanometer, comprising:

  • a discharge amount measurer which measures a discharge amount of a pressure pump; and

    a measuring region circumference length calculator which calculates a measuring region circumference length of a subject person or a subject animal based on a relationship between a pressure in a gas bag provided in a measuring region enclosing portion which encloses a measuring region of the subject person or the subject animal and the discharge amount measured by said discharge amount measurer whereinsaid discharge amount measurer sets a first threshold value and a second threshold value higher than the first threshold value and less than or equal to a target pressure set value under measurement, and measures the discharge amount of the pressure pump until reaching the second threshold value from the first threshold value, using a pressure value in the gas bag after the gas bag expands with a gas discharged from the pressure pump and occupies a space between the measuring region and the measuring region enclosing portion.

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