公开(公告)号：US20190111269A1

公开(公告)日：2019-04-18

申请号：US16151990

申请日：2018-10-04

Applicant: SOCIONEXT INC.

Inventor： Ryusuke Kurachi ,  Tatsuya Ide ,  Masato Yoshioka ,  Masaya Tamamura ,  Amane Inoue

IPC: A61N1/37

Abstract: An acquisition circuit obtains an electrocardiogram waveform on which a pulse signal of a pacemaker is superimposed. A detector circuit performs a filtering process on the electrocardiogram waveform at a cutoff frequency that is determined according to a control signal, and detects a pulse signal on the basis of the result of the filtering process. A control circuit detects, a plurality of times, an occurrence start time of a QRS complex from the electrocardiogram waveform obtained by the acquisition circuit, and detects a QRS duration, and then determines a predicted occurrence start time of the next QRS complex on the basis of the detected occurrence start times of the QRS complexes, and supplies, to the detector circuit, a control signal for instructing to increase the cutoff frequency from a first value to a second value during a period based on the QRS duration from the predicted occurrence start time.