JPH10234688A - Portable electrocardiograph monitoring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To abolish wiring between the breast and the waist by providing a breast side circuit section with an intra-device transmitting means, with which an added electrocardiographic signal added by an adding means is transmitted from the breast to the waist by ratio, and arranging a receiving means, an irregular pulse detecting means and an external transmitting means at a waist side circuit section. SOLUTION: The electrocardiographic signals from electrodes 11, 12, 14 and 15 are differentially amplified by an operational amplifier 31 and transmitted from an antenna 32a by radio as a common-mode noise canceled added electrocardiographic signal. The added electrocardiographic signal is received by an antenna 42a, demodulated/amplified and temporarily stored in a temporary storage means 44. Then, the added electrocardiographic signal is successively waveshape-analyzed by the irregular pulse detection means. When the serious irregular pulses of both added channels or the serious irregular pulse of one channel is detected, the telemeter transmission of added electrocardiographic signals for five heart beats e.g. following from the time point of detection and the identification symbol of patient is performed from the antenna 42a and at the same time, the patient confirms the report of irregular pulse occurrence from a sound from a reporting means 48.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention monitors a plurality of channels of ECG signals guided to electrodes attached to the chest by a monitor circuit carried by a patient, and wirelessly transmits arrhythmia information detected in the ECG signals to a rescue organization. The present invention relates to a portable electrocardiogram monitor for transmitting and receiving a diagnosis by an expert, instructions to a patient, or rescue such as emergency.

[0002]

2. Description of the Related Art Although it has been already performed to analyze an electrocardiogram signal and automatically detect an arrhythmia therein, an arrhythmia is detected by a monitor circuit carried by a patient, and the occurrence thereof is switched by a patient. At least a portable electrocardiogram monitoring device that notifies a rescue organization by operation or automatically by a telemeter has not been put into practical use at least.

[0003]

In general, when an electrocardiogram signal is transmitted by telemetry without being limited to such a device, an electrocardiogram signal guided to an electrode mounted on the chest is transmitted to a transmitter mounted on the waist by wire. It is supplied and transmitted, or transmitted from a transmitter mounted on the chest itself. Therefore, in the former case, wiring between the chest and the waist is troublesome for the patient, and the operation is restricted. In the latter case, the weight of the circuit portion mounted on the chest increases, which also burdens the patient. Therefore, there is room for improvement as a portable device to receive rescue when an arrhythmia occurs, particularly in daily life.

In view of the foregoing, the present invention eliminates the need for wiring between the chest and the waist, and reduces the weight of the circuit portion mounted on the chest. It is intended to provide a device.

[0005]

In order to achieve this object, according to the present invention, a monitor circuit carried by a patient monitors an electrocardiogram signal of a plurality of channels guided to an electrode mounted on a chest. Assuming a portable electrocardiogram monitor device for wirelessly transmitting information to the patient's rescue organization that arrhythmia has been detected in the electrocardiogram signal, a chest-side circuit portion attached to the chest, and a lumbar portion attached to the lumbar region Side circuit portion, the chest side circuit portion has an adding means for adding electrocardiogram signals of a plurality of channels, and an in-device transmitting means for wirelessly transmitting the added electrocardiogram signal added by the adding means from the chest to the waist. And a lumbar-side circuit portion for receiving a transmission signal of the in-apparatus transmission means, and an arrhythmia detection for detecting an arrhythmia that is too heavy to be overlooked in the added electrocardiogram signal received by the reception means. And having means, and external transmission means for the information to the effect that arrhythmia has occurred wirelessly transmits to the relief agencies with the patient's identification code.

The transmitting means in the apparatus transmits the added electrocardiogram signal of a plurality of channels to the lumbar region wirelessly by, for example, an electromagnetic wave by an antenna or a magnetic field by a coil, and causes the receiving device of the lumbar region to receive the signal. Arrhythmia is detected. The information indicating that the arrhythmia has occurred is wirelessly transmitted to the rescue agency by an external transmission means together with the identification code of the patient. In the rescue organization, the doctor gives instructions to the patient as appropriate based on the stored data, or performs a treatment such as requesting an emergency.

In order to make it possible to diagnose the electrocardiogram signal itself at the time of occurrence of the arrhythmia, according to the second aspect of the present invention, the monitor circuit carried by the patient monitors the electrocardiogram signals of a plurality of channels guided to the electrodes mounted on the chest, Assuming a portable electrocardiogram monitoring device for wirelessly transmitting an electrocardiogram signal including an arrhythmia to a patient's rescue facility, a lumbar-side circuit portion receives a transmission signal of a transmission device in the device, and a reception device receiving the transmission signal. Temporary storage means for temporarily storing the added ECG signals for a plurality of heartbeats while sequentially updating them, arrhythmia detecting means for detecting an arrhythmia that is too heavy to be overlooked in the added ECG signal, and a plurality of consecutive arrhythmia detection points. An external transmission means for wirelessly transmitting the added electrocardiogram signal of the heartbeat and the identification symbol of the patient to a rescue agency is provided.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A portable electrocardiogram monitor according to an embodiment of the present invention will be described with reference to FIGS. Reference numeral 10 denotes a flexible base sheet having a pressure-sensitive adhesive layer on the back surface for adhering to the chest. The base sheet is formed in an L shape so as to avoid the breast of a woman, and is attached to the anterior chest wall. An electrocardiogram electrode 11 is attached to the corner portion 10a so as to be attached to the xiphoid position of the chest. I have. Further, the electrode 12 is provided at the upper end of the vertically long portion 10b, and the electrode 1 is provided above the side end of the horizontally long portion 10c.
5. An electrode 14 is mounted diagonally below the electrode 12. With such an electrode arrangement, the α lead is detected between the electrodes 12 and 11, and the γ lead is detected between the electrodes 14 and 15.

On the surface of the base sheet 10, a lead-shaped antenna 32a and a circuit case 30 for accommodating a chest side circuit portion are mounted. In this circuit case,
An adder circuit composed of resistors R1 to R4 for adding two-channel electrocardiogram signals of α lead and γ lead, an operational amplifier 31 for amplifying the added electrocardiogram signal, and amplitude-modulating the amplified output to the waist. An in-device transmitting means 32 with an antenna 32a for transmitting and a button battery for driving these circuit parts are housed. The circuit case 30 includes the antenna 3
It has been confirmed that the battery can be configured to be 10 g or less including 2a and the button battery.

A belt 41 is provided with a circuit case 40 for accommodating a lumbar-side circuit portion mounted on the lumbar region and a lead antenna 42a. The circuit case 40 includes a receiving unit 42 having an antenna 42a for receiving and amplifying and demodulating a transmission signal from the antenna 32a, and an A / D converter for A / D converting the demodulated added electrocardiogram signal. A D converter 43; a temporary storage means 44 for temporarily storing the digitized summed ECG signal for about 10 heartbeats while sequentially updating the summed ECG signal; and fetching the stored summed ECG signal to obtain an arrhythmia which is too heavy to be overlooked. Arrhythmia detecting means 45 for detecting the occurrence, identification symbol registering means 46 for setting and registering the identification code of the patient, an added electrocardiogram signal for, for example, five heartbeats following the time when the first arrhythmia is detected, and the identification code of the patient Transmitting means 47 having a common antenna 42a for wirelessly transmitting the transmission signal to a rescue organization, supplying a reception signal to the reception means 42, and transmitting the transmission signal to the antenna 42a.
a demultiplexing circuit 42b for supplying a signal to the a.
8 and a battery.

The arrhythmia detecting means 45 can be constituted by using a CPU so that the added two R-channels are usually almost identical, so that the R-wave is analyzed by a program similar to that for the one-channel case. An abnormal arrhythmia is detected when the interval is abnormal or an abnormal waveform is generated during the interval. Even if the R wave interval of any channel is shifted, it is easily detected by addition. Then, for example, the continuous number of arrhythmias or their respective waveforms is analyzed to determine whether it is necessary to give an instruction or whether an abnormal arrhythmia has occurred so that emergency treatment is required.

The external transmission means 47 performs radio transmission in a frequency band different from that of the internal transmission means 32 so that the demultiplexing circuit 42b separates the reception signal and the transmission signal. However, a dedicated antenna may be prepared.

The rescue organization stores patient data such as identification codes and medical histories, and doctors who diagnose patients are also on standby. When the added electrocardiogram signal in which the arrhythmia is detected is transmitted, it is recorded together with the reception time, the doctor displays the electrocardiogram signal on the monitor screen, diagnoses with reference to the medical history, etc., and gives instructions to the patient directly or by telephone etc. Or request an emergency.

When using the portable electrocardiogram monitor device thus configured, the corner portion 10 of the base sheet 10 is used.
a is positioned on the xiphoid process, the vertically long portion 10b is aligned with the sternum, and the horizontally long portion 10c is orthogonally adhered along the anterior chest wall. The leads of the electrodes 11, 12, 14, 15 are not routed toward the waist, and the weight of the chest circuit is reduced, so that the degree of restraint of activity during use is greatly reduced.

The two-channel electrocardiogram signals are added and differentially amplified by the operational amplifier 31, so that the common-mode noise is canceled out and wirelessly transmitted from the antenna 32a as an added electrocardiogram signal. This added electrocardiogram signal is transmitted to the antenna 42
a, demodulated and amplified, and temporarily stored in the temporary storage means 44. The added electrocardiogram signal is sequentially subjected to waveform analysis by the arrhythmia detecting means 45, and when the added heavy arrhythmia of both channels or heavy arrhythmia of one channel is detected, the added electrocardiogram for the five heartbeats subsequent to the detection time is detected. The signal and the patient identification are telemetered from antenna 42a. At the same time, the patient can confirm that the occurrence of the arrhythmia has been reported by the sound emitted from the notification means 48.

FIG. 3 shows a circuit configuration of an electrocardiogram monitor device using a portable telephone as an external transmitting means. CPU 50
Is a ROM 51 and a RAM 5 storing operation programs.
2 together with the temporary storage means, the arrhythmia detection means and the identification symbol registration means of the present invention. That is, the CPU 50 stores the added electrocardiogram signals for a plurality of heartbeats while sequentially updating the RAM 52 in accordance with the operation program of the ROM 51,
Analyze the waveform with the arrhythmia detection program stored in. In the nonvolatile area of the RAM 52, a patient identification code is set and registered.

Further, the CPU 50 and the following R
The external transmitting means of the present invention is composed of an interface unit 53 based on S-232C and a portable telephone 57 with an antenna 57b having a modem interface unit 57a that can be optionally connected to the interface unit through a code 59. FIG. 4 shows a storage device for such a waist side circuit portion, in which circuit portions 42, 43, 48, 50 to 5 are provided at the end of a base 60 attached to the belt 41.
3 is accommodated and a circuit block 61 whose surface is firmly insulated is mounted, and a mobile phone 5 is mounted on a flexible case 62 mounted on a base 60 surrounding the circuit block.
7 is housed and has a lid 62 having hook-and-loop fasteners 63 and 63a.
a.

When an arrhythmia to be reported is detected by the waveform analysis in the CPU 50, five consecutive electrocardiogram signals and identification symbols related to the arrhythmia read from the RAM 52 are transmitted from the interface unit 53 to the modem interface unit 57a. And transmitted from the mobile phone 57. When a call is made using the cell phone number of the patient registered by the rescue organization, the code 59 is extended and the cell phone 5
Take out 7 and receive instructions from the doctor. In addition, an emergency request is also made if necessary.

As means for adding electrocardiogram signals of a plurality of channels, as shown in FIG. 5A, an electrode 13 is added to a region below the side end of the horizontally long portion 10c of the base sheet 10,
It is also conceivable to add three channels including the β lead between the electrodes 12, or to add the α lead and the β lead using the electrode 12 in common as shown in FIG.

The above-mentioned external transmitting means 47 of the waist side circuit portion
The CPU 50 may be provided with a switch which is manually operated by the patient in response to the notification of the notification means 48 to start the external transmission means, instead of automatically performing the external transmission when the arrhythmia is detected. . The electrodes are not limited to being mounted on an L-shaped substrate sheet. A system without a doctor at the rescue agency is also conceivable.In such a case, only information on the occurrence of an arrhythmia that cannot be overlooked without sending an electrocardiogram signal is reported to the rescue agency and a request for diagnosis to a specialist or It is also possible to configure so as to make a request to an emergency organization or the like.

[0021]

According to the first or second aspect of the present invention, the wiring between the chest and the waist is abolished by wirelessly transmitting the electrocardiogram signal detected at the chest to the waist for relay transmission, whereby the patient feels uncomfortable or uncomfortable. The degree of inhibition of the activity is greatly reduced. The chest-side transmission means only needs to transmit to the nearest position, and since it is one-channel transmission, the circuit part on that side is reduced in weight and the burden on the patient is further reduced. Even in the case of one-channel transmission, the arrhythmia detection in the added electrocardiogram signals of a plurality of channels is detected, so that the arrhythmia detection reliability is ensured. Since the lumbar circuit part requiring relatively large power is separated from the chest, it is advantageous in terms of safety. The present invention is particularly useful for an electrocardiogram monitor that is always carried to carry out daily activities under a rescue system. According to the second aspect of the present invention, a doctor can diagnose an electrocardiogram signal including a severe arrhythmia or a related electrocardiogram signal in the vicinity thereof at a rescue facility.

According to the third aspect of the present invention, the occurrence of an arrhythmia is reported to the patient himself / herself, so that the patient can appropriately cope with the occurrence of the arrhythmia. System. Claim 5
According to the invention, the external transmission means is configured using a mobile phone, so that it is inexpensive and easy to configure, and communication between the rescue organization and the patient becomes possible.

[Brief description of the drawings]

FIG. 1 is a functional block diagram showing a circuit configuration of a portable electrocardiogram monitor according to an example of an embodiment of the present invention.

FIG. 2 is a front view showing a state in which the portable electrocardiogram monitor is mounted on a patient.

FIG. 3 is a diagram showing a configuration of a portable electrocardiogram monitor device according to another embodiment.

FIG. 4 is a perspective view of a storage device of a lumbar-side circuit portion of the electrocardiogram monitor device according to FIG. 3;

FIG. 5 is a diagram illustrating another configuration of the adding circuit.

[Explanation of symbols]

 11 to 15 electrode 30 chest-side circuit case 40 waist-side circuit case 57 mobile phone

Continued on the front page (72) Inventor Ikuo Kobayashi 804-3, Otsuka, Ogawa-machi, Hiki-gun, Saitama Prefecture Inventor: Tsutomu Ochiai, 7th, Kashima Kitakashima, Akabori-cho, Sawa-gun, Gunma Inside Amtex Akabori Plant

Claims (5)

[Claims] 1. A monitor circuit carried by a patient monitors an electrocardiogram signal of a plurality of channels guided to electrodes mounted on the chest, and wirelessly transmits information indicating that an arrhythmia is detected in the electrocardiogram signal to a rescue facility of the patient. A portable electrocardiogram monitor device for performing, comprising a chest-side circuit portion attached to the chest, and a lumbar-side circuit portion attached to the lumbar region, wherein the chest-side circuit portion converts the electrocardiogram signal of a plurality of channels. Adding means for adding, and in-device transmitting means for wirelessly transmitting the added electrocardiogram signal added by the adding means from the chest to the lumbar region, wherein the lumbar-side circuit portion receives a transmission signal from the in-device transmitting means. Receiving means for detecting an arrhythmia which is too heavy to be overlooked in the added electrocardiogram signal received by the receiving means, and information on occurrence of the arrhythmia of the patient. A portable electrocardiogram monitor device, comprising: an external transmission unit that wirelessly transmits the rescue agency together with another symbol. 2. A portable electrocardiogram monitor for monitoring a plurality of channels of electrocardiogram signals guided to electrodes mounted on a chest by a monitor circuit carried by a patient and wirelessly transmitting an electrocardiogram signal including arrhythmia to a rescue facility of the patient. An apparatus, comprising: a chest-side circuit portion attached to the chest, and a lumbar-side circuit portion attached to the waist, wherein the chest-side circuit portion adds a plurality of channels of the electrocardiogram signal; An in-device transmitting unit for wirelessly transmitting the added electrocardiogram signal added by the adding unit from the chest to the lumbar region, wherein the lumbar-side circuit portion receives a transmission signal of the in-device transmitting unit; Means for temporarily storing the added electrocardiogram signals for a plurality of heartbeats received by the means while sequentially updating the detected electrocardiogram signals, and detecting an arrhythmia that is too heavy to be overlooked in the added electrocardiogram signals A portable electrocardiogram monitor device, comprising: an arrhythmia detecting means for performing the arrhythmia detection; and an external transmitting means for wirelessly transmitting the added electrocardiogram signal and the patient identification symbol for a plurality of continuous heartbeats at the time of the arrhythmia detection to the rescue facility. . 3. The portable electrocardiogram monitor device according to claim 1, wherein the lumbar-side circuit portion has a notifying means for notifying the patient that an arrhythmia has occurred. 4. A lumbar-side circuit portion includes: an informing means for informing a patient that an arrhythmia has occurred; and a switch which is manually operated by the patient in response to the informing of the informing means and starts an external transmitting means. 2. The method according to claim 1, wherein
Or 2) a portable electrocardiogram monitor. 5. The portable electrocardiogram monitor according to claim 1, wherein the external transmitting means is constituted by using a mobile phone.