KR100329205B1 - An electro cardiograph and a method for electrocardiography - Google Patents

Abstract

1. Technical field to which the invention described in the claims belongs

The present invention relates to an electrocardiograph system and a configuration method thereof.

2. Technical Problems to be Solved by the Invention

The present invention relates to an electrocardiograph system in which a measurement head unit including a sensing electrode contacting a human body is electrically isolated from a commercial power supply so as to eliminate the influence of a common noise generated by a commercial power supply and to eliminate a temporary danger due to a leakage current And a method for constructing the same.

3. The point of the solution of the invention

The electrocardiograph system includes a sensing electrode for sensing an ECG signal of a human body and a recording system for recording an induced voltage generated from the ECG signal sensed by the sensing electrode, A measuring head unit for receiving the differential voltage signal and generating a differential voltage signal; And an induced voltage generator for receiving the difference voltage signal from the measurement head unit to generate the induced voltage, wherein the measurement head unit receives all of the signals sensed from the electrode and generates an average potential having an average value thereof An average potential generator for generating a voltage; A difference voltage signal generator for receiving a signal sensed from each electrode and an average potential from the average potential generator to generate a difference voltage signal corresponding to the difference; And a transmission device for transmitting a differential voltage signal from the differential voltage signal generator to the induced voltage generator, wherein the induced voltage generator comprises: a reception device for receiving the differential voltage signal transmitted from the measurement head part; And an induced voltage generator for generating an induced voltage to be written to the recording system according to a combination of the differential voltage signals, wherein the measurement head unit and the induced voltage generator are electrically insulated, And is transmitted / received through the network.

4. Important Uses of the Invention

The present invention is used for electrocardiograph and electrocardiogram measurement-change design and configuration.

Description

An electrocardiograph system and a method for constructing the same

[0001] The present invention relates to an electrocardiograph for measuring and recording an ECG signal of a human body, and more particularly, to an ECG system in which a measurement head unit including a sensing electrode for sensing an ECG signal is electrically insulated from a commercial power source, .

Generally, electrocardiographs include four sensing electrodes: a right hand electrode, a left hand electrode, a left foot electrode, and a chest electrode. In the electrocardiograph, the first induced voltage V ₁ , the second induced voltage V ₂ , the third induced voltage V ₃ , the Goldburger excellent induced voltage aV _R , , The Gold Burger's induced voltage (aV _L ), the Gold Burger's induced voltage (aV _F ), and the Wilson's unipolar induced voltage (V _W ) All of the above-mentioned seven kinds of induced voltages or only a few necessary ones are selected and recorded in the recorder.

Let E _{R be} the potential sensed by the superior electrode, E _{L be} the potential sensed by the left electrode, E _{F be} the potential sensed by the left electrode, and E _C be the potential sensed by the thoracic electrode. The seven kinds of induced voltages to be measured are obtained as follows. In other words,

First induced voltage: V ₁ = E _L - E _R

Second induced voltage: V ₂ = E _F - E _R

Third induced voltage: V ₃ = E _F - E _L

Gold Burger Excellent Induced Voltage: aV _R = E _R - (E _L + E _F ) / 2

Gold Burger Induction voltage: aV _L = E _L - (E _L + E _F ) / 2

Gold Burger Induction Voltage: aV _F = E _F - (E _R + E _L ) / 2

Wilson unipolar induced voltage: V _W = E _C - (E _L + E _F + E _R ) / 3.

However, the electrocardiograph is constituted by a device such as a recorder having a large power consumption, and is supplied with electric power from a commercial power source. Therefore, when a short circuit occurs, it may cause a great danger to the human body. Therefore, it is necessary to use a medical isolation transformer that is electrically insulated and magnetically insulated, and the cost of the electrocardiograph becomes expensive.

Also, since it is connected to a commercial power source, it is greatly affected by the common noise. Therefore, it is necessary to strictly ground the equipment for accurate measurement. Particularly, in order to use the conventional electrocardiograph in the home or workplace for the convenience of the patient who must check the electrocardiogram every day, not only a troublesome procedure for the strict grounding treatment as described above is required but also a common noise generated from a commercial power source The accuracy of the measurement is deteriorated.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a sensing electrode which is in contact with a human body so as to eliminate the influence of common- And a measurement head unit electrically connected to the commercial power supply.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an entire configuration diagram of an electrocardiograph system according to an embodiment of the present invention; FIG.

2 is a detailed configuration diagram of an embodiment of the measurement head unit of FIG. 1 according to the present invention.

3 is a detailed block diagram of an induction voltage generator according to an embodiment of the present invention;

4 is a view showing another embodiment of an electrocardiograph system according to the present invention.

FIG. 5 is a block diagram of another embodiment of an electrocardiograph system according to the present invention. FIG.

Explanation of Symbols of Main Parts of Drawings

10: electrocardiograph 100: measuring head

200: induction voltage generator 300: recorder

400: Power supply

According to an aspect of the present invention, there is provided an electrocardiograph system including a sensing electrode for sensing an ECG signal of a human body and a recorder for recording an induced voltage generated from ECG signals sensed by the sensing electrode, A measurement head unit for receiving the electrocardiographic signal sensed by the sensing electrode and generating a differential voltage signal; And an induced voltage generator for receiving the difference voltage signal from the measurement head unit to generate the induced voltage, wherein the measurement head unit receives all of the signals sensed from the electrode and generates an average potential having an average value thereof An average potential generator for generating a voltage; A difference voltage signal generator for receiving a signal sensed from each electrode and an average potential from the average potential generator to generate a difference voltage signal corresponding to the difference; And a transmission device for transmitting a differential voltage signal from the differential voltage signal generator to the induced voltage generator, wherein the induced voltage generator comprises: a reception device for receiving the differential voltage signal transmitted from the measurement head part; And an induced voltage generator for generating an induced voltage to be written to the recording system according to a combination of the differential voltage signals, wherein the measurement head unit and the induced voltage generator are electrically insulated, And is transmitted / received through the network.

The present invention also relates to a remote transmitting apparatus for transmitting an induced voltage generated by the induced voltage generator through a remote transmission link; And a remote receiver for receiving the induced voltage transmitted by the remote transmitter and delivering the induced voltage to the recorder.

According to an aspect of the present invention, there is provided an electrocardiograph system including a sensing electrode for sensing an ECG signal of a human body and a recorder for recording an induced voltage generated from ECG signals sensed by the sensing electrode, A measurement head unit for receiving the electrocardiographic signal sensed by the electrode and generating a differential voltage signal; A receiving device for receiving a differential voltage signal transmitted from the measuring head; A remote transmitting device for transmitting the differential voltage signal received by the receiving device over a remote transmission link; A remote receiving device for receiving a differential voltage signal transmitted by the remote transmitting device; And an induced voltage generator for receiving the differential voltage signal received by the remote receiver to generate the induced voltage, wherein the measurement head receives all of the sensed signals from the electrode and generates an average An average potential generator for generating a potential; A difference voltage signal generator for receiving a signal sensed from each electrode and an average potential from the average potential generator to generate a difference voltage signal corresponding to the difference; And a transmission device for transmitting a differential voltage signal from the differential voltage signal generator to the induction voltage generator, wherein the induction voltage generator is configured to generate the differential voltage signal based on a combination of the differential voltage signals received by the remote receiving device, And the induction voltage generator is electrically insulated from the measurement head unit, and the differential voltage signal is transmitted / received through a transmission link.

According to an aspect of the present invention, there is provided a method of configuring an electrocardiograph for sensing and recording an ECG signal of a human body in an ECG system, the method comprising the steps of: sensing a ECG signal by attaching a sensing electrode to a human body; A second step of generating a difference voltage signal having a magnitude difference between the sensed electromyogram signals; A third step of transmitting the differential voltage signal; A fourth step of receiving the difference voltage to generate an induced voltage; And a fifth step of recording the induced voltage.

The present invention relates to a method for resolving a common noise problem caused by electrocardiogram measurement by separating an induction electrode of an electrocardiogram into an electrically insulated measuring head, wherein the measurement head and the electrocardiograph main body are connected by a radio wave, Signal, and the isolated measuring head uses the primary or secondary battery and electrically isolates it from the main body of the electrocardiograph to generate a common noise problem caused by the used power connected to the main body. Can be solved.

The above-mentioned objects, features and advantages will become more apparent from the following detailed description in conjunction with the accompanying drawings. Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is an overall configuration diagram of an electrocardiograph system according to an embodiment of the present invention.

1, the electrocardiograph 10 of the present invention includes a measurement head unit 100, an induced voltage generator 200, a recorder 300, a power source 400, and the like.

The measurement head unit 100 includes a sensing electrode (to be described later) for sensing an electrocardiographic signal in contact with a human body, and a separate power source such as a battery for electrically isolating the power source 400 ) Is used. The electrocardiographic signals sensed by the sensing electrodes of the measurement head unit 100 are transmitted to the induced voltage generator 200 through the transmission link 150. Here, the transmission link 51 may be a radio link or an optical telecommunication link such as an optical fiber. That is, any communication link can be used as long as the measurement head unit 100 can maintain a state of being electrically insulated from the power source 400.

2 is a detailed configuration diagram of the measurement head unit 100 of FIG. 1 according to the present invention.

2, the measurement head 100 includes a superior electrode 110, a left electrode 112, a left electrode 114, and a thoracic electrode 116. As shown in FIG. The measurement head unit 100 may further include a differential voltage signal generator 122-128 for receiving signals sensed from the respective electrodes, a differential voltage generator 130 for receiving all of the signals sensed from the electrodes, An average potential generator 120 for generating an average voltage signal generated by the differential voltage generators 122 to 128, a multiplexer 130 for multiplexing the differential voltage signals generated from the differential voltage signal generators 122 to 128, And a transmission device 132 for transmission to the voltage generator 200. In addition, the measurement head unit 100 includes a separate power supply unit 134 for supplying power required for each of the above devices.

The electrodes 110 to 116 of the measurement head 100 are attached to the right, left, left, and chest parts of the human body, respectively, and sense signals generated by the heartbeat of the human body. For convenience of explanation, as described in the above description of the related art, when the potential sensed by the superior electrode 110 is E _R , the left electrode 112 E _L , the potential sensed by the left arm electrode 114 is E _F , and the potential sensed by the thoracic electrode 116 is E _C.

The average potential generator 120 receives all of the potentials sensed by the four electrodes and generates an average potential E _REF (i.e., E _REF = (E _R + E _L + E _F + E _C ) / 4). The difference voltage signal generators 122 to 128 may detect the difference between the average potential E _REF generated by the average potential generator 120 and the sensing potentials E _R , E _L , E _F, and E _C from the respective electrodes, to generate a respective difference voltage signal having a value V _R, V _L, V _F and V _C. Here, the differential voltage signals are as follows.

In other words,

V _R = E _R - E _REF ,

V _L = E _L - E _REF ,

V _F = E _F - E _REF , and

V _C = E _C - E _REF .

The average potential generator 120 and the differential voltage signal generators 122 to 128 may be implemented using a conventional operational amplifier (OP AMP), which is well known to those skilled in the art. So that a detailed description thereof will be omitted.

The multiplexer 130 transmits the differential voltage signals V _R , V _L , V _F and V _C generated by the differential voltage signal generators 122 to 128 to the transmission link 150 Multiplex. However, the multiplexing apparatus 130 is only for increasing the efficiency of the transmission link, and thus may be omitted if the transmission link resources are abundant.

The transmission device 132 transmits the differential voltage signals V _R , V _L , V _F, and V _C multiplexed by the multiplexer 130 to the induced voltage generator 200 through the transmission link 150 send. The transmission device 132 may be, for example, a conventional radio transmitter when the transmission link 150 is a wireless communication link, and may be, for example, a light emitting device if the transmission link 150 is an optical communication link And may be a photo converter such as a light emitting diode (LED) or a laser diode (LD).

Lastly, the power supply unit 134 is a separate power supply unit electrically insulated from the power supply 400 that supplies power to the induction voltage generator 200 or the recorder 300, which will be described below. As the power source device 134, a battery such as a primary battery or a secondary battery can be used.

3 is a detailed configuration diagram of an induction voltage generator 200 according to an embodiment of the present invention.

3, the induced voltage generator 200 includes a receiving device 210 for receiving a signal transmitted from the measuring head unit 100 via the transmission link 150, And a demultiplexer 212 for separating the received signals and recovering the differential voltage signals V _R , V _L , V _F and V _C. In addition, the induced voltage generator 200 is recorded with the difference voltage signals V _R , V _L , V _F and V _C restored by the separator 212 in the recorder 300 And induced voltage generators 214 to 226 for generating seven kinds of induced voltages.

The receiving device 210 may be, for example, a conventional radio receiver when the transmission link 150 is a wireless communication link, and when the transmission link 150 is an optical communication link, And may be a photodetector. The separating device 212 separates the multiplexed signal received by the receiving device and restores the differential voltage signals V _R , V _L , V _F and V _C generated by the measuring head 100 . At this time, when the up-stream multiplexing apparatus 132 of FIG. 2 is unnecessary, the separating apparatus 212 may also be omitted.

Next, the induced voltage generators 214 to 226 generate the seven kinds of induced voltages according to the following equation.

In other words,

_{V 1 = E L - E R} = (E L - E REF) - (E R - E REF) = V L - V R,

_{V 2 = E F - E R} = (E F - E REF) - (E R - E REF) = V F - V R,

_{V 3 = E F - E L} = (E F - E REF) - (E L - E REF) = V F - V L,

aV _R = E _R - (E _L + E _F ) / 2

= (E _R - E _REF ) - ((E _L - E _REF ) + (E _F - E _REF )

= V _R - (V _L + V _F ) / 2

≡ V _R - V _LF ,

aV _L = E _L - (E _L + E _F ) / 2

= (E _L - E _REF ) - ((E _L - E _REF ) + (E _F - E _REF )

= V _L - (V _L + V _F ) / 2

≡ V _L - V _LF ,

aV _R = E _F - (E _R + E _L ) / 2

= (E _F - E _REF ) - ((E _R - E _REF ) + (E _L - E _REF )

= V _F - (V _R + V _L ) / 2

≡ V _F - V _RL , and

V _W = E _C (E _L + E _F + E _R ) / 3

_{= (E C - E REF)} - ((E L - E REF) + (E F - E REF) + (E R - E REF)) / 3

= V _C - (V _L + V _F + V _R ) / 3

≡ V _C - V _LFR .

The induced voltage generators 214 to 226 may be implemented using a conventional operational amplifier (OP AMP) like the differential voltage signal generators 122 to 128 and may generate the seven kinds of induced voltages V _LF , V _RL , and V _LFR necessary for performing the above operation can be obtained by terminating the resistance element as shown in FIG. These techniques are obvious to those skilled in the art, and detailed description thereof will be omitted.

The induced voltages generated by each of the induced voltage generators 214 to 226 may be selectively recorded by the recorder 300 in a manner similar to that used in a general electrocardiograph.

According to another embodiment of the present invention, the measurement head unit 100 and the recorder 300 may be separately disposed at a remote place. Hereinafter, another embodiment of the present invention will be described with reference to Figs. 4 and 5. Fig.

Referring to FIG. 4, the measurement head 100 and the induced voltage generator 200 are located at a short distance, and the recorder 300 is located at a remote location. At this time, the difference voltage signal multiplexed by the measurement head unit 100 is transmitted to the induction voltage generator 200 through the transmission link 150. The seven induced voltages generated by the induced voltage generator 200 are again transmitted via the remote transmission link 450 by the remote transmission device 410. The remote transmission apparatus 410 may include, for example, a multiplexer and a modem, and the remote transmission link 450 may be a public telephone network. Alternatively, the induced voltage generator 200 may be mounted on a personal computer and transmitted to a recorder 300 located in another area in the same building using a local area network (LAN). In this case, The transmitting apparatus 410 may be a LAN card, and the remote transmission link 450 may be a LAN. The induced voltage generator 200 and the remote transmitter 410 are driven by a separate power source 412 and the power source 412 is electrically insulated from the measurement head unit 100.

Next, the seven kinds of induced voltages transmitted by the remote transmitting apparatus 410 are received by the remote receiving apparatus 420 located at a remote place. The remote receiving apparatus 420 may include a modem and a demultiplexer, for example, and separates and restores the seven kinds of induced voltages from the received signal. The seven induced voltages thus recovered are recorded by the recorder 300 at the remote site. Of course, the remote receiving apparatus 420 and the recorder 300 may be installed in a computer system. In this case, the remote receiving apparatus 420 may be a LAN card.

In this embodiment, the multiplexer and the separator may be omitted when the resources of the transmission link 150 and the remote transmission link 450 are abundant.

Now, another embodiment of the present invention will be described with reference to Fig.

5 shows a case where the induced voltage generator 200 'and the recorder 300 are located at a remote place. At this time, the difference voltage signal multiplexed by the measurement head unit 100 is transmitted to the reception apparatus 210 'through the transmission link 150. [ The receiving device 210 'may use the same device as the receiving device 210 included in the induced voltage generator 200 (see FIG. 3). The multiplexed difference voltage signal received by the receiving device 210 'is transmitted via the remote transmission link 450 by the remote transmitting device 410'. In the present embodiment, the remote transmitting apparatus 410 'need not include a multiplexing apparatus. In addition, the receiver 210 'and the remote transmitter 410' are driven by a separate power source 412 ', which is electrically isolated from the measurement head 100 .

Next, the multiplexed difference voltage signal transmitted by the remote transmitting device 410 'is received by the remote receiving device 420' located at the remote location. The remote receiving apparatus 420 may be configured as a modem, for example. Also, the induced voltage generator 200 'separates and restores the seven induced voltages from the multiplexed difference voltage signal received at the remote receiving device 420'. The induced voltage generator 200 'according to the present embodiment does not need to include the receiving apparatus 210 (see FIG. 3) and includes all the remaining components of the induced voltage generator 200 shown in FIG. 3 . The seven induced voltages thus recovered are recorded by the recorder 300 at the remote site.

Also, in this embodiment, the remote transmission link 450 may be a LAN, and the remote transmission device 410 'and the remote reception device 420' may be a LAN card. Further, if the resources of the transmission link 150 and the remote transmission link 450 are abundant, the multiplexing and separating apparatuses may be omitted.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. The present invention is not limited to the drawings.

According to the present invention, by using an electrocardiograph having a measurement head portion electrically insulated from a commercial power source, there is an effect that the risk of a leakage current, which may occur in a person who attaches the electrode, can be fundamentally prevented. In addition, since it has a structure that can be physically separated from the recorder, the inconvenience of staying near the recorder for the measurement of the electrocardiogram can be eliminated.

Claims (6)

An electrocardiograph system comprising: a sensing electrode for sensing an electrocardiographic signal of a human body; and a recorder for recording an induced voltage generated from the electrocardiograph signal sensed by the sensing electrode, A measurement head unit for receiving the electrocardiogram signal sensed by the sensing electrode and generating a difference voltage signal; And And an induced voltage generator for receiving the differential voltage signal from the measurement head to generate the induced voltage, Wherein the measurement head unit comprises: An average potential generator for receiving all of the sensed signals from the electrodes and producing an average potential having an average value thereof; A difference voltage signal generator for receiving a signal sensed from each electrode and an average potential from the average potential generator to generate a difference voltage signal corresponding to the difference; And And a transfer device for transferring a differential voltage signal from the differential voltage signal generator to the induced voltage generator, The induced voltage generator includes: A receiving device for receiving a differential voltage signal transmitted from the measuring head; And And an induced voltage generator for generating an induced voltage to be recorded in the recording system according to a combination of the differential voltage signals, Wherein the measurement head unit and the induced voltage generator are electrically insulated from each other, and the differential voltage signal is transmitted / received through a transmission link. The method according to claim 1, A remote transmitter for transmitting the induced voltage generated by the induced voltage generator through a remote transmission link; And A remote receiver for receiving an induced voltage transmitted by the remote transmitter and delivering the induced voltage to the recorder; Further comprising an electrocardiograph. An electrocardiograph system comprising: a sensing electrode for sensing an electrocardiographic signal of a human body; and a recorder for recording an induced voltage generated from the electrocardiograph signal sensed by the sensing electrode, A measurement head unit for receiving the electrocardiogram signal sensed by the sensing electrode and generating a difference voltage signal; A receiving device for receiving a differential voltage signal transmitted from the measuring head; A remote transmitting device for transmitting the differential voltage signal received by the receiving device over a remote transmission link; A remote receiving device for receiving a differential voltage signal transmitted by the remote transmitting device; And And an induced voltage generator for receiving the differential voltage signal received by the remote receiver to generate the induced voltage, Wherein the measurement head unit comprises: An average potential generator for receiving all of the sensed signals from the electrodes and producing an average potential having an average value thereof; A difference voltage signal generator for receiving a signal sensed from each electrode and an average potential from the average potential generator to generate a difference voltage signal corresponding to the difference; And And a transfer device for transferring a differential voltage signal from the differential voltage signal generator to the induced voltage generator, The induced voltage generator includes: And an induced voltage generator for generating an induced voltage to be recorded in the recording system according to a combination of the differential voltage signals received by the remote receiving apparatus, Wherein the measurement head unit and the induced voltage generator are electrically insulated from each other, and the differential voltage signal is transmitted / received through a transmission link. A method for configuring an electrocardiograph for sensing and recording an ECG signal of a human body in an ECG system, A first step of attaching a sensing electrode to a human body to sense an ECG signal; A second step of generating a difference voltage signal having a magnitude difference between the sensed electromyogram signals; A third step of transmitting the differential voltage signal; A fourth step of receiving the difference voltage to generate an induced voltage; And A fifth step of recording the induced voltage / RTI > 5. The method of claim 4, The difference voltage signal is a difference signal, Wherein the signal is transmitted substantially through a wireless communication link. 5. The method of claim 4, The difference voltage signal is a difference signal, Wherein the signal is substantially transmitted through an optical communication link.