Title:
ELECTROCARDIOGRAPHIC SIGNAL MEASURING DEVICE
Document Type and Number:
Japanese Patent JP2023158877
Kind Code:
A
Abstract:
To provide an electrocardiographic signal measuring device that can accurately and stably measure and record electrocardiographic signals of a subject over a long period of time in a contactless manner with no burden on a body even in a noisy environment or in a normal living environment such as when walking, and that can check the electrocardiographic signals even from a remote position.SOLUTION: An electrocardiographic signal measuring device 1 includes: a capacitively coupled detection electrode 2 for detecting an electrocardiographic signal of a subject without contacting the skin of the subject; a first amplifier 10 that amplifies the detection signal detected by the detection electrode 2; a feedback circuit 25 that returns an inverted signal obtained by inverting the in-phase signal from the detection electrode 2 to the body of the subject via a feedback electrode 24; and a guard electrode 4 disposed via an insulator on the side of the detection electrode 2 opposite to the side facing the body of the subject. The detection electrode 2 is connected to one differential input of a second amplifier 8, the guard electrode 4 is connected to the other differential input of the second amplifier 8, and the output of the second amplifier 8 is connected to each differential input of the first amplifier 10.SELECTED DRAWING: Figure 1
Inventors:
MATSUNUMA SATORU
HATTORI REIJI
HATTORI REIJI
Application Number:
JP2022068912A
Publication Date:
October 31, 2023
Filing Date:
April 19, 2022
Export Citation:
Assignee:
MAXELL LTD
International Classes:
A61B5/302; A61B5/256; A61B5/308
Attorney, Agent or Firm:
Mitsuo Kuribayashi
Nobuhiro Nitta
Kuribayashi Kazuki
Atsushi Miura
Nobuhiro Nitta
Kuribayashi Kazuki
Atsushi Miura
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