JPH01291828A - Telemeteric transmitter of cardiogram - Google Patents

Abstract

PURPOSE:To improve the diagnosis efficiency of a physician and allow to easily confirm the transmission of the cardiogram signal of a patient by providing a display unit displaying the wave-form of the cardiogram signals on a case main body having a transmission circuit and a transmission antenna. CONSTITUTION:A power source B and a transmission circuit S to transmit the cardiogram signal are stored in a case main body 3, electrodes 1 and 2 closely stuck to the human body skin surface to take out the cardiogram signal and a transmission antenna N are fitted. A display unit 4 displaying the wave- form V1 of the cardiogram signal is provided on the case main body 3. The wave-form V1 of the cardiogram signal can be invariably observed on the display unit 4.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electrocardiogram telemeter transmitter, and particularly to an electrocardiogram telemeter transmitter provided with a display section on which the waveform of an electrocardiogram signal is displayed.

[Conventional technology]

(1) Background of the Invention In general, an electrocardiogram telemeter transmitter is a device that is worn on the body of a heart disease patient and wirelessly transmits the patient's electrocardiogram to a separately installed receiver.

Specifically, as shown in Figure 6, an electrocardiogram telemeter transmitter T is hung from the neck of a patient in the CCU (intensive patient monitoring unit for patients with acute myocardial infarction, angina pectoris, etc.) by a string A. , the electrocardiogram telemeter transmitter T is provided with guidance codes C1 and C2.
, C3, the electrodes L1, L2, and L3 are brought into close contact with the patient's chest.

In this state, for example, even while the patient is taking a bath, the electrocardiogram signals derived from the electrodes L1 and L2 are processed such as modulation within the electrocardiogram telemeter transmitter T, and the It is wirelessly transmitted from L3 and displayed on monitor M.

Therefore, since the patient's electrocardiogram can be transmitted online, so to speak, by the electrocardiogram telemeter transmitter T, the monitor M
By constantly monitoring the electrocardiogram displayed on the monitor, appropriate measures can be taken immediately if a change occurs in the patient's condition.

However, from the viewpoint of improving the diagnosis efficiency of the doctor and confirming the transmission of electrocardiogram signals, it is desirable to arrange the electrocardiogram telemeter transmitter T and monitor M as close as possible.

(2) Conventional example As mentioned at the beginning, the conventional electrocardiogram telemeter transmitter is
Since it is a transmitting device, it does not itself have a monitor.

As for the actual usage, there are two ways (roughly divided) as shown in Fig. 7.

First, as shown in Fig. 7 (A), monitors Mll, M12...M2n are installed in advance on the side of patients hospitalized in the CCU, and the electrocardiogram monitors each patient is wearing are installed in advance. This is a method of displaying the waveform of an electrocardiogram signal transmitted from a telemeter transmitter (not shown). (Alternatively, there is a method of placing these monitors on the ceiling of the CCU room, but this method is essentially the same as the bedside monitor method shown in the figure.

Second, as shown in Fig. 7(B), there is a monitor Mll for each patient at the nursing station NS, which is separate from the CCU.
This is a method of arranging M12...M2n and displaying the electrocardiogram signal waveform of a patient in the CCU on each monitor in the same manner as in FIG. 7(A). [Problem to be Solved by the Invention] According to the prior art (FIG. 7(A)), the doctor:
When diagnosing patients admitted to the CCU, patients are examined sequentially as indicated by the arrows, and electrocardiogram signals displayed on monitors placed next to each patient can be viewed.

However, in the second conventional technique (FIG. 7(B)), since a monitor is not installed on each patient's side, the doctor cannot directly view the electrocardiogram of each patient even during rounds.

If you want to see an electrocardiogram, the doctor should press C as shown by the arrow.
Having to leave the CU, go to the nursing station NS in a separate building, and look at the monitor is not only troublesome for the doctor, but also reduces the efficiency of diagnosis.

Furthermore, with this second prior art, since the patient does not have a monitor on his or her side, it is difficult to confirm whether or not an electrocardiogram signal has been transmitted to the monitor from the electrocardiogram telemeter transmitter that the patient is wearing. There is also. If you want to check, you have to go out of your way to get out of the CCU and go to nurse station N.
It is clear that he cannot bear the hassle of having to go all the way to S.

SUMMARY OF THE INVENTION An object of the present invention is to improve the diagnostic efficiency of a doctor and facilitate the confirmation of electrocardiogram signal transmission by a patient in a diagnostic method using an electrocardiogram telemeter transmitter.

[Means for Solving the Problems] As shown in FIG. 1, the above problems are solved by providing an electrode 1.2 that is in close contact with the skin surface of a living body and derives an electrocardiogram signal, and a transmitting circuit S for transmitting the electrocardiogram signal. and a case body 3 in which a power source B is built in and a transmitting antenna N is attached, and a waveform (1) of the electrocardiogram signal provided on the case body 3.
This problem is solved by an electrocardiogram telemeter transmitter characterized by comprising a display section 4 that displays .

[For production]

As described above, according to the present invention, the electrode 1.2 that is in close contact with the skin surface of a living body and derives an electrocardiogram signal, the transmitting circuit S and its power source B for transmitting the electrocardiogram signal are built-in, and the transmitting antenna An electrocardiogram telemeter transmitter is provided, which is characterized by comprising a case body 3 to which an N is attached, and a display section 4 provided on the case body 3 and displaying the waveform v1 of the electrocardiogram signal.

Therefore, even if a monitor is not installed near the patient in the CCU room (Fig. 7 (B)), the doctor can monitor the waveform V1 of the electrocardiogram signal displayed on the display section 4 during his/her rounds. You can always see inside.

Therefore, diagnostic efficiency has been dramatically improved for doctors.

On the other hand, the patient can view the waveform of his or her own electrocardiogram signal displayed on the display unit 4 at any time. Therefore, the patient can easily check whether the electrocardiogram signal is reaching the monitor. Now you can.

〔Example〕

The invention will now be explained by way of example with reference to the accompanying drawings.

FIG. 2 is an overall view of an embodiment of the present invention.

Reference numerals 1 and 2 in the figure are electrodes, 3 is a case body, and 4 is a display section.

The electrode 1.2 is a conductor that derives an electrocardiogram signal by closely contacting the patient's living body skin surface, and is connected to the transmitter circuit S built in the case body 3 (see FIG. , 5th) are connected.

Also, in the illustrated embodiment, another electrode connected to the cord CN is provided, which is connected to the electrode 1.
2, it functions as a transmitting antenna N (FIGS. 1 and 5) by being in close contact with the skin surface.

The case body 3 is integrally formed of plastic and has a rectangular parallelepiped shape as a whole, and houses a transmitter circuit S and its power source B (Figs. 1 and 5), and the power source B (battery). ) is the cap 8 screwed onto the case body 3.
It is possible to exchange it via.

A top panel 1O fixed to the case body 3 with screws IOA and IOB is provided with a power switch operation section 6 for connecting to the power supply and a nurse call switch operation section 7 for emergency use.

On the other hand, a display section 4 formed of a liquid crystal display is provided on the front surface 31 of the case body 3, and the waveform v1 of the electrocardiogram signal derived from the electrodes 1.2 is displayed.

In addition to the electrocardiogram signal waveform V1, this display section 4 displays heart rate information (2) (see Figures 3 and 4), which will be described later.A display changeover switch is used to switch the display. An operating section 5 is provided on one side 33 of the case body 3.

FIG. 3 is a diagram showing the first embodiment of the present invention, in which there is only one display section 4 (FIG. 2), and the displayed contents are sequentially changed by operating the display changeover switch operation section 5. This is the case.

1 represents the waveform of the electrocardiogram signal, as already mentioned.

(2) Heartbeat information, which represents the heartbeat rate, that is, the pulse beats per minute.

3 is power information and represents the remaining energy of battery B (FIG. 5), that is, the existing electromotive force out of the total electromotive force of 1.5■.

v4 is time information and represents the current time in hours, minutes, and seconds.

v5 is usage time information and represents the lap time using the electrocardiogram telemeter transmitter.

Of the above displays, heartbeat information (2) may be simply a number (power information (3) may be a limit electromotive force, for example, a red mark may appear when it reaches 1.1), and time information (v4).
The year, month, and day may also be added (Usage time information ■5 is applicable not only to patients who must wear the electrocardiogram telemeter transmitter 24 hours a day, but also to patients who must wear the electrocardiogram telemeter transmitter 24 hours a day, for example, during the exercise test period.) It is also beneficial for athletes who wear electrical telemeter transmitters.

Further, the display changeover switch operation section 5 may be of a push button type or a rotary dial 2, and a blank 6 is displayed at the end.

If electrodes 1 and 2 become disconnected or the lead cord CL C2
If the electrocardiogram signal is not input to the electrocardiogram telemeter transmitter due to disconnection of the wire or poor contact of the connector 9, the display section 4 will display rN instead of the waveform 1 of the electrocardiogram signal.
o LEADJ (reference number ■1' in Figure 3) is displayed.

Furthermore, in this case, since the heart rate cannot be measured either, rNOC0UNTJ (reference numeral 2' in FIG. 3) is displayed instead of the heart rate.

FIG. 4 is a diagram showing a second embodiment of the present invention. What is different from the first embodiment (FIG. 3) is that all of the displays V1 to V6 are operated by operating the display changeover switch operation section 5. By,
Instead of switching and displaying, from Vl to ■5 and ■6
The point is that it only has two switching modes:

That is, when displaying, as shown in the figure, when the display changeover switch operation section 5 is set to the display mode (arrow), the Vl
All items from ■5 to ■5 are displayed.

FIG. 5 is a circuit diagram for operating the embodiment of the present invention, and shows the contents of the transmitting circuit S built into the case body 3.

The circuit includes an electrocardiogram amplification section 3A that takes and amplifies the difference between the electrocardiogram signals derived from the electrodes 1.2, and a first subcarrier modulation section 3B that modulates the subcarrier (2700 Hz) from the first subcarrier oscillation section 3C. , a main carrier modulation section 3D that modulates the main carrier wave (136, 30 MHz>) from the main carrier oscillation section 3G, a voltage detection section 3F that detects the lower limit electromotive force (■) of the power supply B, and an electromotive force E of the power supply B up to (■). A D C/DC converter 3H5 that boosts the voltage and applies it to each circuit; a palm system control unit 3I that controls the entire device; a video signal converter that converts electrocardiogram signals, heart rate, etc. into video signals for display on the display unit 4; It is composed of 3J.

Hereinafter, based on this FIG. 5, the operation of the above embodiment (FIGS. 3 and 4) will be explained.

First, when the electrodes I and 2 for deriving the electrocardiogram signal and the transmitting antenna N are brought into close contact with the skin surface of the living body and the lever (FIG. 2) constituting the power switch operating section 6 is turned on, the switch S is turned on.
WI closes and each circuit begins to operate.

Electrocardiogram signals St, S derived at electrodes 1.2, respectively
After passing through the connector 9, the signal 2 is input to the electrocardiogram amplification section 3A, and the difference between the two is amplified by a preamplifier (not shown) inside the electrocardiogram amplification section 3A.

The amplified electrocardiogram signal S3 is input to the first subcarrier modulator 3B and the system controller 3I, respectively.

The amplified electrocardiogram signal S3 input to the system control unit 3I is
After various processing is performed, the data is stored in a memory (not shown).

Here, when the dial of the display changeover switch operating section 5 is set to the initial position (■ in Fig. 3), the system control section 3I, which has received the instruction signal S15, takes out the amplified electrocardiogram signal from the memory and outputs it as a processed signal s12. Video signal converter 3
Enter J.

The video signal converter 3J converts the input amplified electrocardiogram signal into a video signal 313 and outputs it to the display unit 4.

The display unit 4, which manually outputs the amplified electrocardiogram signal as a video signal 313, displays the waveform V1 of the electrocardiogram signal as shown in the figure.

If a doctor making rounds in the CCU looks at the waveform 1 of this electrocardiogram signal, he can tell what the condition of the heart of the patient wearing the electrocardiogram telemeter transmitter is, so he goes out of his way to install a monitor. Diagnosis efficiency has been further improved compared to conventional methods, as it is no longer necessary to go to the nurse's station.

In addition, since the waveform 1 of the electrocardiogram signal is displayed on the display section 4 of the electrocardiogram telemeter transmitter that the patient is wearing,
By looking at the waveform (1), transmission confirmation became easier.

As explained in the first embodiment of FIG. 3, when no electrocardiogram signal is input, the amplified electrocardiogram signal S3 is not stored in the memory (not shown) of the system control section 3.

In this case, the system control unit 3I that receives the instruction signal 315
outputs this information as a processed signal 312 to the video signal converter 3J. The video signal conversion unit 3J converts this into a video signal S13 and outputs it to the display unit 4, and the display unit 4 that receives this displays “No LEAD”.

Next, when the dial of the display changeover switch operation section 5 is set to the second position (■ in Fig. 3), the system control section 3, which has received the instruction signal S15, processes the heart rate that has been measured in advance. It is output as a signal S12 to the video signal converter 3J.

The video signal conversion section 3J, which receives the heart rate as the processed signal S12, converts it into a video signal S13 and outputs it to the display section 4. Display unit 4 manually inputting video signal St3
displays a heart rate of 69 as the heart rate information ■2.

If the electrocardiogram signal is not input at this position (■ in Fig. 3), the system control unit 3I that has received the instruction signal S15 sends a processed signal S12 to that effect to the video signal conversion unit 3J. and output it. The video signal conversion unit 3J that receives this converts it into a video signal 313 and outputs it to the display unit 4, and the display unit 4 displays rNo C0UNTJ. If the system control unit 3I constantly monitors the power supply B, the system control unit 3I constantly monitors the power supply B (indicated by signal line 516), time information (4) and usage time information (5) are blanked out by the system control unit (3) measuring the output value of its own timer (not shown).
6 is a signal 31 in which the system control unit 3■ processes the clear signal.
3, the display unit 4 is output via the video signal converter 3J in the same manner as the amplified electrocardiogram signal S3 and heart rate.
are displayed respectively.

The above-mentioned operation is for the first embodiment (FIG. 3), but for the second embodiment shown in FIG. The difference is that (2) and (2) in the figure, and the other basic operations are completely the same as the first embodiment, so their explanation will be omitted.

On the other hand, since the operations other than those centered on the system control section 3I are already well known, only an outline will be described below.

That is, the amplified electrocardiogram signal S3 input to the first subcarrier modulation section 3B is changed in frequency by changing the voltage applied to a multivibrator (not shown) constituting the first subcarrier oscillation section 3C and changing its oscillation frequency. modulation(
FM modulation).

The FM modulated wave S4 is input to the main carrier modulating section 3D, and the amplitude of the main carrier wave (136, 30 Mtlz) of the main carrier oscillating section 3G is changed depending on the waveform.

Thereby, the amplified electrocardiogram signal S3 is radiated as an amplitude modulated (AM modulated) wave S5 from the transmitting antenna N toward the conventional monitor installed at the nurse station.

In case of an emergency, press the button on the nurse call switch operation section 7 (second
When the switch SW3 is pressed by the call signal S6,
is opened, the FM modulated wave S11 of the amplified electrocardiogram signal S3 is once interrupted, and the switch SW3 is restored again to return to the original waveform, and this pulse shaped wave is transmitted as an AM modulated wave S5 as a nurse call signal.

In addition, if the electrocardiogram 1.2 that was in close contact with the patient's biological skin comes off, the preamplifier (
The impedance balance between the electrode 1.2 (not shown), the electrode 1.2, and the skin of the living body is greatly disrupted, and the two-man power SIO of the second subcarrier oscillator 3E for the preamplifier is not canceled, and a 340Hz pulse wave is superimposed on the amplified electrocardiogram signal S3. death,
Similarly, the AM modulated wave S5 is transmitted as the electrode displacement signal.

Furthermore, when the electromotive force of the power source B reaches the lower limit, the comparator 3Fl constituting the voltage detection section 3F operates, and the double switch SW2 simultaneously closes the transmission line.

As a result, the subcarrier (
340tlz) By manually applying power to the main carrier oscillation section 3G, S9 changes the voltage of a crystal oscillator (not shown) forming the main carrier oscillation section 3G. Therefore, the main carrier wave (136,
30MHz) is FM modulated and transmitted as a battery dead signal.

At this time, the output voltage of the DC/DC converter 3H
. is converted by the voltage converter 3F2, and the converted voltage signal S
7 is input to the main carrier modulation section 3D. This is because the above-mentioned dead battery signal is a pulse wave FM modulation wave and has a deep modulation depth, so by making it shallow, noise will not be added. [Effects of the Invention] As described above, according to the present invention, the electrode 1.2 that is in close contact with the skin surface of the living body to derive an electrocardiogram signal, A case body 3 that contains a transmission circuit S for transmitting an electrocardiogram signal and its power source B, and is equipped with a transmission antenna N, and a display section 4 provided on the case body 3 and that displays the waveform Vl of the electrocardiogram signal. An electrocardiographic telemeter transmitter is provided, comprising:

For this reason, although a monitor is not installed on the patient's side in the CCU as in the past (Fig. 7 (B)), doctors can It is now possible to always see the images during medical rounds, which has the technical effect of dramatically improving diagnostic efficiency for doctors.

On the other hand, the patient can now view the waveform of his or her own electrocardiogram signal displayed on the display unit 4 at any time, making it easy for the patient to check whether the electrocardiogram signal is reaching the monitor. The technical effect of being able to do this was achieved.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the principle of the present invention, Fig. 2 is an overall view of an embodiment of the invention, Fig. 3 is a diagram showing a first embodiment of the invention, and Fig. 4 is a diagram showing a second embodiment of the invention. 5 is a circuit diagram for operating an embodiment of the present invention, FIG. 6 is a general explanatory diagram of an electrocardiogram telemeter transmitter, and FIG. 7 is an explanatory diagram of a prior art. l, 2... Electrode, 3... Case body, 4... Display section, B... Power supply, N... Transmission antenna, S... Transmission circuit, ■1... Electrocardiogram signal Waveform. Patent applicant Agent: Fukuda Denshi Co., Ltd.
Patent attorney Akira Saito 1.2...Electrode 3
0. Case body 4.Display part N...Transmission aftertenser Day..Power source S..Transmission circuit ■1.. Waveform of electrocardiogram signal.Principle diagram of the present invention.Figure 1.Overview of embodiments of the present invention.■6..・Blank Figure 3 A diagram showing the first embodiment of the present invention Figure 4 A diagram showing the second embodiment of the invention Figure 4 General explanatory diagram of an electrocardiogram meter transmitter Figure 6 Prior art 1 Seventh explanation Diagram

Claims (3)

[Claims] (1) Electrodes 1 and 2 that are in close contact with the skin surface of a living body to derive an electrocardiogram signal, and a case body 3 that includes a built-in transmitting circuit S and its power source B for transmitting the electrocardiogram signal, and is equipped with a transmitting antenna N. , provided on the case body 3, the waveform V of the electrocardiogram signal
1. An electrocardiogram telemeter transmitter comprising a display section 4 that displays 1. (2) The display unit 4 further displays heartbeat information V representing the heartbeat rate.
2. The heart according to claim 1, wherein power source information V3 representing the remaining energy of power source B, time information V4 representing time, and usage time information V5 representing the time required for use are displayed, respectively. Electric telemeter transmitter. (3) The display section 4 is formed of a liquid crystal display and is provided on the front surface 31 of the case body 3, and the display changeover switch operation section 5 is provided on one side surface 33 of the case body 3. An electrocardiographic telemeter transmitter according to claim 1.