JP2010259679A - Electrocardiogram waveform measuring sensor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a sensor which can measure electrocardiogram waveforms with high sensitivity, easily and by simple operations. <P>SOLUTION: A plurality of electrode parts for measuring electrocardiogram waveforms are arranged on arms which extend from a body case. The arrangement of the electrode parts is a reduced arrangement of the electrode arrangement of standard monitor induction. At least one arm which receives the electrode part elastically displaces in accordance with stress put on the electrode part during measurement. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention is an electrocardiographic waveform measuring device, which is a technique related to the structure of an electrocardiographic waveform measuring sensor that can be attached to a living body and enables measurement by a simple operation when a user needs it.

  With the advancement of mobile sensor device technology, body area networks (BAN) for measuring and monitoring the health status and physiological information of a living body are drawing attention. A small wireless biosensor that can constantly monitor a living body for a long time is a key device for practical use of BAN, and if such a sensor is realized, it is expected to bring new knowledge to the medical field (Non-patent Document 1). reference). Furthermore, BAN is expected not only to be a medical monitor for patients but also to be used for monitoring the exercise state in a fitness club and the like, so that it can bring about a great effect in preventive medicine. In the future, it is expected that the BAN network will be connected to a wide area network such as the Internet, and a wide variety of healthcare monitor services will be possible. It is desired to realize a multifunctional wireless biosensor.

  Such a multi-function wireless biosensor is required to automatically and accurately measure an electrocardiogram, body temperature, blood pressure, acceleration, and the like with a simple operation. In particular, measurement of an electrocardiogram is important. However, there are still many problems to realize a small electrocardiographic waveform measuring device. First, in order to simplify the 12-lead potential detection that has been widely used for conventional diagnosis, it is necessary to enable measurement with a small number of electrodes. The second problem is that it is necessary to be able to measure in a so-called ubiquitous environment that does not limit the environment used by the user in the healthcare field. For this reason, it is desirable that the measurement electrode, the signal processing unit, and the signal wireless transmission unit are integrated.

JP 2001-299712 A Japanese Patent Application No. 2008-223601

  From this point of view, a method for arranging a plurality of electrodes in a wearing band has been proposed in order to realize a small and wearable electrocardiographic measurement sensor in which electrodes can be easily arranged (Patent Document 1). (Refer to the above), it was not enough to make it possible to measure whenever necessary.

On the other hand, the inventor of the present application has proposed a sensor having a structure in which the electrode section and the main body case are integrated so that the second induction of standard monitor induction can be measured (see Patent Document 2). FIG. 3 shows an example of an electrocardiograph according to an embodiment of Patent Document 2. This electrocardiographic sensor is suspended from the neck by a positioning and fixing member 7 and is held on the subject's chest, and on the upper part of the body case 4 toward the human body for measuring bipolar monitor guidance. The arm portion 5 has an electrocardiogram waveform detection electrode 1 (negative electrode) and a common electrode 2 from the left on the right side surface of the human side surface. A second electrocardiographic waveform detection electrode 3 (positive electrode) is provided at the lower part of the human body side side surface of the main body case 4 extending vertically from the center of the arm portion on the human body side surface. The polarities of the first electrode, the second electrode and the third electrode are in accordance with the polarity of the standard II limb lead II, and the positions of the first electrode, the second electrode and the third electrode are standard. The electrode arrangement for guiding the limb II is reduced.
The user can measure the electrocardiogram waveform when necessary by placing the main body in the center of the chest with a positioning tool in advance and simply pressing a switch. The measurement data is wirelessly transmitted and transmitted to the access point, taken into a personal computer or the like, and the user's electrocardiographic data is monitored and displayed or stored as waveform data.

The electrocardiographic waveform measurement sensor proposed in Patent Document 2 can measure an electrocardiographic waveform with a relatively simple operation. However, since the three electrodes accommodated in the arm portion are substantially on the same plane, By simply pressing, it is not easy to bring all the electrodes into contact with the skin uniformly with respect to the chest of the human body assumed to be the measurement position. As a result, this factor allows signal noise to be mixed and adversely affects the reproducibility of the measured waveform. Therefore, in order to allow the user to easily and accurately measure an electrocardiographic waveform, there is room for improvement in bringing all the electrodes into uniform contact with the skin.

  The present invention was created in view of the above-described problems of the prior art, and realizes an electrocardiographic waveform measurement sensor that can stably measure an electrocardiographic waveform.

In order to solve the above problems, the present invention provides an electrocardiographic waveform measurement sensor of the present invention,
An electrocardiographic waveform measuring device,
(A) a plurality of arm portions (5) extending from the main body case (4);
(B) Each of the plurality of arm portions has an electrode portion (1, 2, 3) for detecting an electrocardiogram waveform,
(C) The position of the electrode (16) of the plurality of electrocardiographic waveform detection electrode portions (1, 2, 3) is a reduced arrangement of at least one monitor guidance electrode arrangement for standard limb guidance,
(E) The polarity of the plurality of electrodes (16) is in accordance with the polarity of the monitor induction,
(F) At least one of the plurality of arm portions has an elastic displacement portion (10) that is elastically displaced in accordance with a stress applied to the electrode portion.

Preferably, the elastic displacement part (10) has a flexible fitting part.
Preferably, the fitting portion of the arm portion includes an outer member made of soft plastic and an inner member made of hard plastic. Moreover, the fitting part of the said arm part can also pinch | interpose a conductive leaf | plate spring in the fitting part of an arm part. Furthermore, it is preferable that at least one of the plurality of electrode portions for detecting an electrocardiographic waveform has a movable joint (14) that is displaced in accordance with a stress applied to the electrode (16).

  The present invention is a small accessory-type electrocardiograph and its system as a ubiquitous type, and is a device that is easy to wear as an accessory. Enables shape measurement.

1 is an overall configuration diagram of an electrocardiographic waveform measurement sensor of the present invention. It is a 1st Example of the fitting part of the electrocardiograph measuring sensor of this invention. It is a 2nd Example of the fitting part of the electrocardiograph measuring sensor of this invention. It is an Example of the electrode part of the electrocardiograph measuring sensor of this invention. It is a figure which shows the Example of a prior application. Shown is standard II limb lead II.

  Hereinafter, embodiments of the present invention will be described based on examples shown in the drawings. The embodiment is not limited to the following.

In the electrocardiograph measuring sensor of the present invention, as shown in FIG. 1, the arrangement of the electrodes is a reduced arrangement of the electrode arrangement of the second induction of standard limb guidance. The polarity of the electrode follows the polarity of the monitor induction. At least one arm part 5 performs elastic displacement mainly in a direction perpendicular to the paper surface in accordance with the stress applied to the electrode part. In FIG. 1, the flexible elastic displacement part 10 is provided in the horizontal arm. This elastic displacement part makes it possible to bend mainly in the perpendicular direction of the skin so that the electrode part follows the chest surface of the subject when the subject presses the switch of the sensor body. As a result, all the electrodes follow the skin surface uniformly with respect to the unevenness of the human body. In the standard limb lead II, the electrode polarity and the electrode arrangement are defined as shown in FIG.

FIG. 2 is a first embodiment of the elastic displacement portion 10 of the electrocardiograph measuring sensor of the present invention, and shows a cross-sectional view of the flexible elastic displacement portion 10 in the arm portion. The elastic displacement part 10 can hold and elastically displace the arm part by sandwiching an inner member 12 made of hard plastic with an outer member 11 made of soft plastic.

FIG. 3 is a second embodiment of the elastic displacement portion 10 of the electrocardiograph measuring sensor of the present invention, and shows a cross-sectional view of the flexible elastic displacement portion 10 in the arm portion. The elastic displacement portion 10 enables holding of the arm portion and elastic displacement by sandwiching the conductive leaf spring 13 between the outer members 11. The leaf spring 13 can be used as part of the wiring of the electrode 16.

  FIG. 4 is an embodiment of another aspect of the electrocardiograph measurement sensor of the present invention, and shows a cross-sectional view of an arm portion. In the present embodiment, the electrode joint 14 is fitted into the arm, and the ball joint 15 is used in the fitting to secure the mobility of the electrode joint.

In the above description, the electrocardiographic waveform measurement sensor according to the present invention makes it possible to easily measure an electrocardiographic waveform when the user needs it.

  The biosensor according to the present invention and a biosensor network system using the biosensor are used as a health care monitor that can be used in a ubiquitous environment in a medical field, a nursing facility, or a cableless physical condition management and medical field in an individual unit. Can be applied to various usage forms.

DESCRIPTION OF SYMBOLS 1 Electrode part for 1st electrocardiogram waveform detection 2 Electrode part for 3rd electrocardiogram waveform detection 3 Electrode part for 2nd electrocardiogram waveform detection 5 Arm part 7 Positioning member 8 Start switch 10 Elastic displacement part 14 Fitting 16 electrode

Claims (6)

An electrocardiographic waveform measuring device,
(A) a plurality of arm portions (5) extending from the main body case (4);
(B) Each of the plurality of arm portions has an electrode portion (1, 2, 3) for detecting an electrocardiogram waveform,
(C) The position of the electrode (16) of the plurality of electrocardiographic waveform detection electrode portions (1, 2, 3) is a reduced arrangement of at least one monitor guidance electrode arrangement for standard limb guidance,
(E) The polarity of the plurality of electrodes (16) is in accordance with the polarity of the monitor induction,
(F) An electrocardiographic waveform measurement sensor, wherein at least one of the plurality of arm portions has an elastic displacement portion (10) that is elastically displaced according to a stress applied to the electrode portion. The electrocardiographic waveform measurement sensor according to claim 1, wherein the elastic displacement part (10) comprises an elastic member. The electrocardiographic waveform measurement sensor according to claim 1, wherein the elastic displacement part (10) has a flexible fitting part. The electrocardiographic waveform measurement sensor according to claim 3, wherein the flexible fitting portion comprises an outer member (11) made of soft plastic and an inner member (12) made of hard plastic. The electrocardiographic waveform measurement sensor according to claim 3, wherein the fitting portion sandwiches a conductive leaf spring (13) between the fitting portions. An electrocardiographic waveform measuring device,
(A) a plurality of arm portions (5) extending from the main body case (4);
(B) Each of the plurality of arm portions has an electrode portion (1, 2, 3) for detecting an electrocardiogram waveform,
(C) The position of the electrode (16) of the plurality of electrocardiographic waveform detection electrode portions (1, 2, 3) is a reduced arrangement of at least one monitor guidance electrode arrangement for standard limb guidance,
(E) The polarity of the plurality of electrodes (16) is in accordance with the polarity of the monitor induction,
(F) At least one of the plurality of electrode portions for detecting an electrocardiogram waveform has a movable joint (14) that is displaced in accordance with a stress applied to the electrode (16). Measuring sensor.