Patent ID: 7008379
Filing Date: 2006-03-07
Classification: A61B

Abstract:
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 wherein said 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.