ELECTRODE DEVICE AND ELECTROCARDIOGRAPHIC MEASUREMENT DEVICE

• US 20100137726A1
• Filed: 12/25/2006
• Published: 06/03/2010
• Est. Priority Date: 12/25/2006
• Status: Active Grant

• Current Assignee: Osaka Electro-Communication University
• Original Assignee: Osaka Electro-Communication University
• Inventors: MATSUMURA, Masafumi
• Granted Patent: US 8,068,902 B2
• Time in Patent Office: Days
• US Class Current: 600/509
• CPC Class Codes: A61B 5/25 Bioelectric electrodes therefor
• CPC Class Codes: A61B 5/30 Input circuits therefor
• CPC Class Codes: A61B 5/6822 Neck

Abstract

A device for electrocardiogram measurement is provided, which is relatively not easily influenced by electrical activities of muscles, and which can perform electrocardiogram measurement during a measured person'"'"'s daily life without removing clothes. The device includes a pair of lead electrode sections that are provided on a band section. Each of the pair of lead electrode sections includes a lead electrode that is disposed so that the lead electrode is positioned in the vicinity of a carotid artery of the measured person when the band section surrounds a neck portion of the measured person. The band section is configured to include a flexible band, and the band section detachably holds onto the neck portion of the measured person with nipping force arising from elastic deformation of the flexible band.

Claims

1. An electrocardiogram measurement electrode device comprising:

a band section capable of surrounding a neck portion of a measured person;

a reference electrode section that is provided on the band section, and that includes a reference electrode which is disposed so that the reference electrode is positioned in the vicinity of the vertebra prominens of the measured person when the band section surrounds the neck portion of the measured person; and

a pair of lead electrode sections that are provided on the band section, each of the pair of lead electrode sections including a lead electrode, the lead electrode being disposed so that the lead electrode is positioned in the vicinity of a carotid artery of the measured person when the band section surrounds the neck portion of the measured person, and a voltage follower, an input terminal of the voltage follower being connected to the lead electrode, one of power-supply terminals of the voltage follower being connected to the reference electrode.

2. The electrocardiogram measurement electrode device according to claim 1, wherein the band section is configured to include a flexible band, and the band section detachably holds onto the neck portion of the measured person with nipping force arising from elastic deformation of the flexible band.

3. The electrocardiographic measurement device according to claim 1 further comprising:

a differential amplifier that amplifies a difference between outputs of the respective voltage followers of the pair of lead electrode sections; and

an electric circuit section that performs a filtering process on an output of the differential amplifier.

4. The electrocardiograph according to claim 3, wherein the differential amplifier and the electric circuit section are mounted on the band section.

5. An electrocardiogram measurement electrode device comprising:

a reference electrode section including a reference electrode;

a pair of lead electrode sections, each of the pair of lead electrode sections including a lead electrode and a voltage follower, an input terminal of the voltage follower being connected to the lead electrode, one of power-supply terminals of the voltage follower being connected to the reference electrode; and

a holding section that holds the reference electrode section so that the reference electrode is positioned in the vicinity of the vertebra prominens of a measured person, and that holds the pair of lead electrode sections so that the lead electrodes are positioned in the vicinities of carotid arteries of the measured person.

6. A method for detecting an electrocardiogram signal, the method comprising the steps of:

detecting an electrocardiogram signal using a reference electrode that is disposed in the vicinity of the vertebra prominens of a measured person;

detecting electrocardiogram signals using a pair of lead electrodes that are disposed in the vicinities of left and right carotid arteries of the measured person;

inputting, in each of voltage followers disposed in the vicinity of a corresponding one of the lead electrodes, a corresponding one of the electrocardiogram signals that are detected using the lead electrodes which are disposed in the vicinities of the voltage followers to an input terminal, inputting the electrocardiogram signal that is detected using the reference electrode to one of power-supply terminals, and outputting an electrocardiogram signal; and

taking, as inputs, the electrocardiogram signals that are output from the voltage followers, each of the voltage followers being disposed in the vicinity of a corresponding one of the lead electrodes, amplifying a difference between potentials of both of the signals, and outputting a bipolar lead electrocardiogram signal.