NONINVASIVE BLOOD PRESSURE DEVICE WITH PRESSURE NOISE REDUCTION AIR BUFFER

摘要

A non-invasive blood pressure device with a pressure noise reduction air buffer is provided to reduce a measurement error by removing pressure noise from a blood pressure signal collection step through insertion of the simple air buffer. A cuff(101) is wrapped on a subject's arm to measure pulse and blood pressure of a subject. An air buffer(110) is connected to the cuff and has a plurality of air channels and a buffering chamber(111) to connect the cuff and a control valve(103). A pressure driving unit(102) is connected to the air buffer to supply compressed air. The control valve is connected to the buffering chamber of the air buffer to control pressure applied to the cuff. A pressure sensor(105) is connected to the air buffer to measure a change of the pressure transmitted from the cuff based on the pulse and blood pressure of the subject. A control and measuring unit(106) controls the pressure driving unit, the control valve, and the pressure sensor and measures the blood pressure of the subject. An input unit(107) inputs information required for operation of the control and measuring unit. A display unit(108) displays the measurement result of the control and measuring unit.