Biological signal transmission apparatus

• US 20020107453A1
• Filed: 04/02/2002
• Published: 08/08/2002
• Est. Priority Date: 12/25/1997
• Status: Active Grant

• Current Assignee: Nihon Kohden Corporation
• Original Assignee: Nihon Kohden Corporation
• Inventors: Matsumura, Fumiyuki, Hosaka, Hidehiro, Sakata, Hiroshi, Sekiguchi, Tetsushi
• Granted Patent: US 7,089,048 B2
• Time in Patent Office: Days
• US Class Current: 600/509
• CPC Class Codes: A61B 2560/0412 Low-profile patch shaped housings
• CPC Class Codes: A61B 2560/045 with a separable interface unit, e.g. for communication
• CPC Class Codes: A61B 2560/0475 Special features of memory means, e.g. removable memory cards
• CPC Class Codes: A61B 5/0006 ECG or EEG signals
• CPC Class Codes: A61B 5/0008 Temperature signals
• CPC Class Codes: A61B 5/282 Holders for multiple electrodes for introduction into the body A61B5/287
• CPC Class Codes: A61B 5/332 Portable devices specially adapted therefor
• CPC Class Codes: A61B 5/335 using integrated circuit memory devices
• CPC Class Codes: Y10S 128/903 Radio telemetry

Abstract

An electrode 4 for detecting a biological signal and a loop antenna 3 are integrally mounted on a support 2 placed on the surface of a living body and a transmitter 5 is placed on the support 2. A biological signal detected on the electrode 4 is input through a connector 11 to electric circuitry 10 of the transmitter 5 and an electric signal processed by the electric circuitry 10 is output through connectors 12 and 13 to both ends of the loop antenna 3 from which the biological signal is emitted to a receiver. At this time, the opening face of the loop antenna 3 is in a direction almost perpendicular to the surface of a living body for improving sensitivity.

Claims

1. A method of detecting a ECG wave of a subject, comprising:

(a) positioning two electrodes within 2.5 cm of an area defined between a xiphoid process and a navel perpendicular to a midsternal line; and

(b) detecting a ECG wave from signals from said two electrodes according to a standard limb lead method.

2. A method according to claim 1 , wherein said electrodes are spaced from each other within a range of 1 to 7.5 cm.

3. A method according to claim 1, wherein said electrodes are spaced from each other in a range of 2 to 7.5

4. A method of detecting a ECG wave of a subject, using a ECG signal transmission apparatus which comprises:

two electrodes for detecting a ECG signal;

a support for supporting said electrodes, said support operative to be placed on a living body;

a transmitter having an electric circuit for processing the ECG signal detected on said electrodes;

said method comprising;

(a) positioning said two electrodes at an area defined between a xiphoid process and a navel perpendicular to a midsternal line; and

(b) detecting a ECG wave from signals from said two electrodes according to a standard limb lead method.

5. A method according to claim 4, wherein said electrodes are spaced from each other within a range of 1 to 7.5 cm.

6. A method according to claim 4, wherein said electrodes are spaced from each other within a range of 2 to 7.5 cm.