Pulse Wave Data Corrector of Electronic Hemomanometer, Electronic Hemomanometer, Method of Correcting Pulse Wave Data of Electronic Hemomanometer, Method of Controlling the Electronic Hemomanometer, Program

Abstract

An object of the present invention is to provide a pulse wave data compensator for an electronic hemomanometer, a method of controlling an electronic hemomanometer, an electronic hemomanometer, a method of correcting pulse wave data in an electronic hemomanometer, a program and a recording medium, all of which can easily and assuredly correct erroneous measurements in a pulse wave pattern. The present invention provides an electronic hemomanometer which is designed to time-differentiate signals each formed by superposing a pulse wave amplitude component on a cuff pressure, to compute an envelope consisting of the time-differentiated signals, to detect the maximal value in the computed envelope, to sort the time-differentiated signals generated prior to the maximal envelope value in ascending order, to sort the time-differentiated signals generated after the maximal envelope value in descending order, and to form an envelope consisting of the sorted time-differentiated signals.

1 . A pulse wave data corrector for electronic hemomanometer, comprising: 
 an output data observing means for observing output data F (Pn) corresponding to discrete input data Pn in time series, and    a correction means for correcting the output data F (Pn) using monotonic increase or decrease of the output data F (Pn).    
   
   
       2 . A method of controlling a pulse wave data corrector of an electronic hemomanometer, comprising: 
 an output data observing step of observing output data F (Pn) corresponding to discrete input data Pn in time series, and    a correction step of correcting the output data F (Pn) using monotonic increase or decrease of the output data F (Pn) and of storing the corrected data in a memory.    
   
   
       3 . A program for causing a computer to execute: 
 an output data observing procedure for observing output data F (Pn) corresponding to discrete input data Pn in time series, and    a correction procedure for correcting the output data F (Pn) using monotonic increase or decrease of the output data F (Pn) and for storing the corrected data in a memory.    
   
   
       4 . A computer-readable recording medium recorded with a program for causing a computer to execute: 
 an output data observing procedure for observing output data F (Pn) corresponding to discrete input data Pn in time series, and    a correction procedure for correcting the output data F (Pn) using monotonic increase or decrease of the output data F (Pn) and for storing the corrected data in a memory.    
   
   
       5 . An electronic hemomanometer comprising: 
 a time differentiating means for time-differentiates signals each formed by superposing a pulse wave amplitude component on a cuff pressure to time-differentiated signals;    an envelope computing means for computing an envelope consisting of the time-differentiated signals;    a maximal envelope value detecting means for detecting a maximal value in a computed envelope;    an ascending sort means for sorting the time-differentiated signals generated prior to a maximal envelope value in ascending order;    a descending sort means for sorting the time-differentiated signals generated after the maximal envelope value in descending order; and    an envelope forming means for forming the envelope consisting of the time-differentiated signals sorted by the ascending and descending sort means.    
   
   
       6 . The electronic hemomanometer as claimed in  claim 5 , wherein maximal and minimal blood pressures are computed based on the envelope consisting of the time-differentiated signals.  
   
   
       7 . The electronic hemomanometer as claimed in  claim 6 , wherein computed maximal and minimal blood pressures are visually displayed.  
   
   
       8 . The electronic hemomanometer as claimed in  claim 5 , wherein a pulse rate is computed based on time interval of a peak in the envelope consisting of the time-differentiated signals.  
   
   
       9 . The electronic hemomanometer as claimed in  claim 8 , wherein computed pulse rate is visually displayed.  
   
   
       10 . A method of correcting pulse wave data in an electronic hemomanometer, comprising: 
 a time differentiating step of time-differentiating signals each formed by superposing a pulse wave amplitude component on a cuff pressure to obtain time-differentiated signals and of storing obtained results in a memory;    an envelope computing step of computing an envelop consisting of the time-differentiated signals and of storing computed results in the memory;    a maximal envelope value detecting step of detecting a maximal value in the computed envelope and of storing detected results in the memory;    an ascending sort step of sorting the time-differentiated signals generated prior to the maximal envelope value in ascending order and of storing sorted result in the memory;    a descending sort step of sorting the time-differentiated signals generated after the maximal envelope value in descending order and of storing sorted results in the memory; and    an envelop forming step of forming an envelope consisting of the time-differentiated signals sorted in the ascending and descending sort steps and of storing formed envelop in the memory.    
   
   
       11 . A program for causing a computer to execute: 
 a time differentiating procedure for time-differentiating signals each formed by superposing a pulse wave amplitude component on a cuff pressure to obtain time-differentiated signals and for storing obtained results in a memory;    an envelope computing procedure for computing an envelope consisting of the time-differentiated signals and for storing computed results in the memory;    a maximal envelope value detecting procedure for detecting a maximal value in the computed envelope and for storing detected results in the memory;    an ascending sort procedure for sorting the time-differentiated signals generated prior to the maximal envelope value in ascending order and for storing sorted results in the memory;    a descending sort procedure for sorting the time-differentiated signals generated after the maximal envelope value in descending order and for storing sorted results in the memory; and    an envelope forming procedure for forming an envelope consisting of the time-differentiated signals sorted by the ascending and descending sorting procedures and for storing formed envelop in the memory.    
   
   
       12 . A computer-readable recording medium stored with a program for causing a computer to execute: 
 a time differentiating procedure for time-differentiates signals each formed by superposing a pulse wave amplitude component on a cuff pressure to obtain time-differentiated signals and for storing obtained results in a memory;    an envelope computing procedure for computing an envelope consisting of the time-differentiated signals and for storing computed results in the memory;    a maximal envelope value detecting procedure for detecting the maximal value in the computed envelope and for storing detected results in the memory;    an ascending sort procedure for sorting the time-differentiated signals generated prior to the maximal envelope value in ascending order and for storing sorted results in the memory;    a descending sort procedure for sorting the time-differentiated signals generated after the maximal envelope value in descending order and for storing sorted results in the memory; and    an envelope forming procedure for forming an envelope consisting of the time-differentiated signals sorted by the ascending and descending sorting procedures and for storing formed envelop in the memory.