Electronic blood pressure measuring device

Claim 1

An electronic blood pressure meter, comprising: (a) a cuff; (b) a pressure system coupled to said cuff for pressurizing and evacuating said cuff; (c) a pressure sensor coupled to said cuff for detecting the pressure within said cuff; (d) a pulse wave parameter extraction means which extracts the maximum level difference in the pulse wave component of the cuff pressure over a certain time interval, for each of a plurality of time intervals; (e) a blood pressure determining means for determining a blood pressure according to said cuff pressure and said pulse wave parameter; (f) a pulse wave maximum value corresponding cuff pressure extracting means for extracting the cuff pressure corresponding to the maximum value of the pulse wave component over each of said time intervals; (g) a pulse wave minimum value corresponding cuff pressure extracting means for extracting the cuff pressure corresponding to the minimum value of the pulse wave component over each of said time intervals; and (h) a cuff pressure averaging means for computing an average value of said cuff pressure extracted by said pulse wave maximum value corresponding cuff pressure extracting means and said cuff pressure extracted by said pulse wave minimum value corresponding cuff pressure extracting means; (i) said average value as computed by said cuff pressure averaging means being taken as the cuff pressure of a particular time interval.