Electronic sphygmomanometer

摘要

A CPU of a sphygmomanometer includes a first control unit that, during measurement, controls a change in the internal pressure of a measurement air bladder by controlling the driving of a pump and/or a valve. The CPU further includes a second control unit that controls a change in the internal pressure of a compressing air bladder by controlling the driving of a pump and/or a valve. During measurement, the second control unit carries out control so that the internal pressure of the compressing air bladder is a predetermined ratio to the internal pressure of the measurement air bladder controlled by the first control unit.

主权项

1. An electronic sphygmomanometer comprising:
a first fluid bladder; a first adjustment unit that injects/exhausts a fluid into/from said first fluid bladder at a variable speed; a sensor that detects an internal pressure of said first fluid bladder; a wrapping unit for wrapping said first fluid bladder around a measurement area of a measurement subject at a variable wrapping strength; a second adjustment unit that adjusts the wrapping strength of said wrapping unit; and a control unit,
wherein said control unit executes:
a first control process that outputs a first control signal to said first adjustment unit so that a rate of change in the internal pressure and/or fluid amount in said first fluid bladder becomes a predetermined rate of change;a second control process that outputs a second control signal to said second adjustment unit so that said wrapping strength reaches a predetermined ratio with the rate of change in the internal pressure and/or fluid amount in said first fluid bladder under said first control process; anda calculation process that calculates a blood pressure value of said measurement subject based on a change in the internal pressure of said first fluid bladder detected under said first control process.