Patent ID: 8900156

Claim:
An electronic sphygmomanometer comprising: a pressure sensor that is connected to a closed space to detect an internal pressure of the closed space; a control device that controls inlet and exhaust of a fluid with respect to the closed space; an arithmetic device; and a switching mechanism that switches an area in the closed space connected to the pressure sensor between a first space and a second space, wherein the closed space comprises the first space and the second space, wherein the first space comprises an air bladder and a first air tube connected from the air bladder to the switching mechanism and a second air tube connected from the switching mechanism to the pressure sensor, wherein the second space is contained within the first space, wherein the second space is a space where the air bladder and the first air tube are separated from the first space, wherein the arithmetic device performs arithmetic processing of computing a blood pressure of a measurement region around which a fluid bladder included in the closed space is wrapped and determination processing of determining whether an air leakage is generated from the closed space based on a change of the internal pressure, wherein the control device controls the switching of the switching mechanism when the arithmetic device performs the determination processing, and wherein the arithmetic device further specifies a space comprising an air leakage point in the determination processing.