KR860001633Y1 - Automatic operation marking apparatus for electrocardiogram - Google Patents

Abstract

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Description

Automatic operation mark device of electrocardiograph

The accompanying drawings are circuit diagrams of the subject innovation.

* Explanation of symbols for main parts of the drawings

end. Reed switch

B: encoder integrated device

Programmable Read-Only Memory (PROM)

Ra: Hex counter integrated device

Bar: Marker stylus

4: Clock generation integrated device

H: Counter integrated device

character. Combination integrated device

OR ₁ -OR ₄ : Ocatenate Q ₁ , Q ₂ , TR ₁ -TR ₄ : Transistor

PC ₁ -PC ₄ : Photocoupler R ₁ -R ₁₀ : Resistance

SW ₁ : Manual Mark Switch SW ₂ : Automatic, Manual Switch

According to the present invention, when a lead is automatically selected in an electrocardiograph of one channel, a coded signal corresponding to each lead is sequentially output at a predetermined time interval to automatically display a mark corresponding to each lead. An automatic operation mark device of an electrocardiograph which automatically combines a detection signal of a patient to display its waveform.

In the general electrocardiograph, the weak electric time change caused by the excitation of the heart is detected and displayed as a waveform from two combination electrodes placed on the surface of the body or inside the body, and a mark is used to distinguish each detected waveform. It was to be expressed in the form of.

However, in the related art, most of the electrocardiograph is composed of mechanical contacts, so it is necessary to select leads by hand one by one and detect them, and there is inconvenience of distinguishing by marking and marking the marks according to each lead, and also automatically combining and displaying the marks. There was an electrocardiograph that could be used, but it was very complicated in circuit configuration and consumed a lot of power, so it could not be used as a portable device. Also, since the cost of the product was expensive, it was not widely supplied to general consumers.

In view of the above, the present invention, when the automatic and manual switching switches are connected to the automatic position, the coded signals corresponding to each lead are sequentially outputted at regular intervals, such as when each lead switch is connected sequentially. It is designed to automatically display the mark according to the lead and to automatically combine the detection signal of the patient. Since the circuit is composed of only a few integrated elements, the power consumption is extremely low, so it can be used as a portable device. Regardless of the order of the reed switch, the desired lead can be selected and detected first, which will be described in detail with reference to the accompanying drawings.

The manual and automatic terminals (a) and (b) of the switching switch (SW ₂ ) are connected to the encoder integrated device (b) and the clock generation integrated device (g), and are fixed according to the connection state of the lead switch (a). Counter integrated device ( _H ) that generates a constant code signal by outputting the output terminals (D _A -D _D ) of the encoder direct element (B) and the clock generation integrated device (C) which outputs a code signal Connect the output terminals of (A) (B) (C) (D) to the oragates (OR ₁ -OR ₄ ), respectively, and the output side of the oragates (OR ₁ -OR ₄ ) is divided into 16 binarized constants. The input terminals A ₄ -A ₇ and the collector of the programmable read-only memory C which are memorized to output the signal are connected to the transistors TR ₁ -TR ₄ which are commonly connected. On the other hand, the output terminal AD of the hexadecimal counter integrated element D is connected to the input terminals A ₀ -A ₃ of the programmable read-only memory C. The output side thereof is a transistor Q ₁ (Q ₂ ). ). A photocoupler (PC) connected to the mark stylus (bar) through a resistor (R ₂ ) and a diode (D ₁ ), and the emitters of transistors (TR ₁ -TR ₄ ) are connected to resistors (R ₃ -R ₆ ). Integrated light receiver of photocoupler PC ₁ -PC ₄ connected to the light emitting part of _1- PC ₄ and connected to the resistors R ₇ -R ₁₀ is connected to the detection terminals 1-10 of the patient. It is connected to an element, and the output side thereof is connected to an electrocardiogram display stylus (car) through an amplifier stage AM.

Referring to the effect of the present invention configured as described above are as follows.

If the switching switch SW _{2 is} connected to the manual terminal a while the power is applied, the encoder integrated element (B) is operated and outputs a constant code signal according to the connection state of the lead switch (A). Done. That is, when the lead switch K ₁ is connected to the output signal D _A (D _B ) (D _C ) (D _D ) of the inboard integrated device ( _b ), the code signal 1 ( 0) (0) (0) (0) is outputted, and when the number 2 lead switch K ₂ is connected, a constant code signal is output in the form of a signal signal (0) (1) (0) (0). do. At this time, since the clock generation integrated device (G) is not operated and no clock signal is applied to the clock terminal CK of the counter integrated device (H), the low potential signal is output to all of its output terminals AD. Accordingly, a code signal output to the output terminals D _A -D _D of the encoder integrated device (b) is input to the read-only memory (C) which can be programmed through the respective OR gates OR ₁ -OR ₄ . It is applied to the terminals A _4- A ₇ and simultaneously to the bases of the transistors TR _1- TR ₄ .

When a code signal is input to the input terminals A _4- A ₇ of the programmable read-only memory C, a predetermined signal corresponding to the code signal is output based on the already stored data. At this time, the counter integrated device D counts the clock signal CLK applied to the clock terminal CK thereof, and a hexadecimal code signal is outputted to the output terminals A, B, C and D thereof. Since the hexadecimal code signal is input to the input terminals A ₀ -A ₃ of the programmable read-only memory C, a constant signal of 16 binarizations divided into 16 is output on the high output side.

That is, a read-only memory in which the code signal (1) (0) (0) (0) of the encoder integrated device (B) can be programmed by connecting the lead switch (K ₁ ) of the lead switch ( _A ). When inputted to (C), the binary signal (0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0) divided into 16 is output on its output side. When the number 2 lead switch (K ₂ ) is connected and the code signals (0) (1) (0) (0) are input to the programmable read-only memory (C), 16 binary signals ( 0,1,1,1,0,0,1,1,1,0,0,0,0,0,0,0) is output so that the constant of coded integrated device The read-only memory (C) which can be programmed so that different constant signals are output by the signals is stored in the memory.

In this way, the output signal changes according to the code signal applied to the input terminals A ₄ -A ₇ of the programmable read-only memory (C), and while the output signal remains high (1), the transistor ( While Q ₁ ) (Q ₂ ) is turned on and remains low (0), transistor Q ₁ (Q ₂ ) is turned off, during which time transistor Q ₁ (Q ₂ ) is turned on. Only a constant voltage is applied to the mark marking pen (bar) to drive the mark marking pen (bar), so that the mark is displayed on the heat-sensitive recording paper.

In this way, the output switch of the programmable read-only memory (C) according to the connection state of the lead switch (a) is set in a different order and the number of times that the transistors Q ₁ and Q ₂ are turned on and off. It is possible to automatically distinguish each mark according to the connection status of), and when the user wants to display the mark of the lead manually, the length and duration of the time for turning on the manual mark switch (SW ₁ ) are controlled. The mark of the low lead can be distinguished.

In addition, the transistors TR _1- TR ₄ are turned on or off by the code signal of the encoder integrated device (b) through the OA gates OR ₁ -OR ₄ .

That is, as in the above example, the code signal (1) (0) (0) (0) is output to the output terminal (AD) of the encoder integrated device ( _b ) by connecting the lead switch (K ₁ ). In this case, the high signal 1 is applied to the base of the transistor TR ₁ through the orifice OR ₁ , and the low signal 0 is applied to the remaining transistors TR _1- TR ₄ . ₄ ) is turned on, and the transistors TR _2- TR ₄ are turned off.

As a result, the photocoupler PC ₁ is operated so that a low signal having a ground potential is applied to the input terminal A ₀ of the integrated integrated device. The photocoupler PC _2- PC ₄ is not operated. The high signal is applied to all of the input terminals A ₁ -A ₃ of the integrated device.

As a result, the code signal (1) (0) (0) (0) output to the output terminal (AD) of the encoder integrated device (b) is the code signal (0) in the Porto coupler (PC _1- PC ₄ ). (1) (1) (1) is inverted and applied to the input terminals A ₀ -A ₃ of the integrated integrated device (child), and similarly, the lead integrated switch (K ₂ ) is connected to the encoder integrated device. (B) When the code signal (0) (1) (0) (0) is output to the output terminal (AD), the code signal is the code signal (1) (0) (1) (1). Inverted to and applied to the input terminal (AD) of the combination integrated device (character).

As such, the signal of the integrator integrated device (b) is inverted by the photocoupler (PC _1- PC ₄ ) and input to the input terminal (A ₀ -A ₃ ) of the integrated integrated device (C). Of the 10 detection signals detected at the terminals (1-10), only two detection signals selected in advance corresponding to the code signals input to the input terminals (A ₀ -A ₃ ) of the integrated integrated device (C) are combined. The amplified stage AM is output, and the signal amplified by the amplified stage AM is applied to the electrocardiogram display stylus (difference) to display the corresponding electrocardiogram.

Then, the switching switch SW ₂ is switched to the automatic terminal b so that the clock generation integrated device 4 operates, and the clock signal of the output terminal Q is converted to the clock terminal CK of the counter integrated device A. ), The same signal signal as when the lead switch is operated sequentially in the output terminals (A) (B) (C) (D) of the counter integrated device (H) at regular time intervals. Is the output. That is, when the clock signal is first applied to the clock terminal CK of the counter integrated element H, the output terminals A, B, and C thereof are the same as when the lead switch K ₁ is connected. The code signal (1) (0) (0) (0) is outputted to (D), and then a predetermined time is equal to the time constant of the resistor R and the capacitor C of the clock generation integrated device. Later, the clock signal is output again and applied to the clock terminal CK of the counter integrated device H. At this time, the output terminal A, B, C, and D is connected to the lead switch K ₂ . Corresponding code signals (0) (1) (0) (0) are output. In this way, the code signal is output to the output terminal AD of the counter integrated device (H) at a predetermined time interval from the first to the end of the lead switch (A), and at this time, the integrated device for the encoder (b) Since low-signal signals are output to all of the output terminals D _A -D _D , the code signals output from the output terminal AD of the counter integrated device (a) are generated by the orate (OR ₁ -OR ₄ ). Through the input terminals A ₄ -A ₇ and the transistors TR ₁ -TR _{4 of the} read-only memory (C), which are programmable through Are sequentially displayed and the detection signal of the patient corresponding to each lead switch (a) is combined to sequentially display the ECG waveform thereof.

Here, by changing the time constants of the resistance (R) and the capacitor (C) of the clock integrated device (G), it is possible to adjust the interval between the output time of the code signal, and also to control the repetition or not. It is very easy to use by automatic operation, and in case of manual operation, it is very easy to use because the desired lead switch can be connected and displayed first.

In addition, since the signal is converted by using a photocoupler (PC _1- PC ₄ ) to combine the detection signal of the patient, the safety, which is an essential requirement for medical devices, is very excellent.

As described above, the present invention is a simple circuit composed of several integrated devices. Since the mark and the detection waveform of all the lead switches can be automatically displayed, it is very simple to use, the structure is simple, and the power consumption is low. It is extremely small, so it can be used in a portable electrocardiograph, which has the advantage of improving safety and reliability.

Claims (1)

A constant signal is output to the output side of the read-only memory (C) programmable by the output of the encoder integrated device (b) according to the connection state of the lead switch (a) and the output of the hexadecimal counter integrated device (d). And an automatic mark device for operating a mark display stylus (bar), which is connected to a clock generation integrated device (G) which generates a clock signal at a predetermined time by a time constant of a resistor (R) and a capacitor (C). The output terminal AD of the counter integrated element (A) and the output terminals D _A -D _D of the encoder integrated element (B) are read-only memories that can be programmed through an ORGAE (OR ₁ -OR ₄ ). C) input terminal of the (a ₄ -A ₇₎ and the transistor (TR ₁ -TR connected to the base of _4), and light emission of the transistor (TR ₁ -TR emitter captive Coupler (PC ₁ -PC _{4) 4)} section by connecting to his light receiving portion is connected to an input terminal (a ₀ -A ₃₎ of the combined integrated element (I) for a patient connected to the detecting terminal (1-10) Automatic operation of the device marked as electrocardiographs that sex characteristics.