| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce the influences of noises for improving the measurement precision concerning the electronic sphygmomanometer that measures blood pressures by detecting Korotkoff sounds. <P>SOLUTION: The electronic sphygmomanometer comprises a means to detect pulse waves based on data from a pressure sensor to detect cuff pressures, a sound sensor to collect data necessary for detecting Korotkoff sounds, a gate means that generates a gate signal in response to pulse waves, permits the recognition of data collected by the sound sensor when the gate is open, but does not permit it when the gate is closed, a means to detect Korotkoff sounds based on data permitted by the gate means, and a means to finalize the blood pressure based on data from the detected Korotkoff sounds and from the pressure sensor. The gate means calculates a position a bit this side of the position when pulse waves start based on the minimum value of pulse wave generation intervals in the past, and assumes that this calculated position represents the gate open, and the time point when a pulse wave peak has passed away the gate closed. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
