JPH08190341A - Mimic display method of heart stimulation transmission system and heart stimulation transmission system display model - Google Patents

Abstract

PURPOSE: To make it possible to provide exact explanation or easy understanding of a heart stimulation transmission system including time and dynamic factors by arranging plural light emitting means or liquid crystal display means in the positions corresponding to the heart stimulation transmission paths of a heart model and lighting or flickering these means, thereby indicating the heart stimulation transmission system. CONSTITUTION: The plural light emitting means L1 to 35, L17r to 35r or liquid crystal display means arranged in the positions corresponding to the heart stimulation transmission paths 2 of the heart model 1 are successively flickered, by which the specific heart stimulation transmission system is mimidy displayed. Simultaneously, the electrocardiogram wave number observed in this specific heart stimulation transmission system is displayed by lighting or successively flickering the plural light emitting means L or liquid crystal display means disposed in an electrocardiogram waveform display section 3 within the heart model or on the outside thereof. The specific heart stimulation transmission system and the electrocardiogram waveform observed in such specific heart stimulation transmission system are simultaneously and correlatively displayed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a schematic display method of the heart and a model of the heart. In particular, it relates to a schematic display method of the cardiac stimulation conduction mode and a model for displaying the cardiac stimulation conduction mode, and is used for medical student education and learning, nursing student education and learning, veterinary student education and learning, and explanation to patients. Can be used.

[0002]

2. Description of the Related Art Conventionally, various models have been created for the purpose of assisting an anatomical understanding of a heart whose shape and movement are complicated. Most of them are three-dimensional models showing only the appearance of the heart, and faithfully reproduce the appearance of the right atrial appendage, left atrial appendage, apex, aorta, vena cava, etc. There is also a model in which the inside of the heart is represented together with the appearance of the heart, and the inside of the heart can be observed by dividing the model itself into 2 to 4 parts. In order to aid in physiological understanding, a model in which the region where arterial blood is present in the heart of a living body is colored red and the region where venous blood is present is colored blue in the heart model that can be divided into several pieces It's being used.

As a model showing a cardiac stimulation conduction path, a coronary artery system and a stimulation conduction system (a cardiac stimulation conduction path) are provided in a frame body made of a wire material that defines a space imitating the left and right atriums and the left and right ventricles.
A model (No. 61-104476) is known. As a model showing the waveform of the electrocardiogram, a model in which the blood flow of the heart and the waveform of the electrocardiogram are displayed in a correlative manner by blinking of the light emitting means (Shokai 59-46374) is known.

[0004]

[Problems to be Solved by the Invention] In a normal cardiac stimulation conduction mode, a stimulus (electrical signal) is emitted from a sinoatrial node near the boundary between the anterior vena cava and the right atrial appendage, and the stimulus is transmitted to the right atrium wall. It is transmitted to the atrioventricular node above the interventricular septum through the existing internodal conduction path. The stimulation during this period triggers the contraction of the atrium. From the AV node, the stimulus is transmitted to the His bundle in the interventricular septum, the left bundle of His bundle and the right bundle of His bundle, and the Purkinje fibers in the wall of the ventricle. The stimulation during this time triggers the contraction of the ventricles. Therefore,
Correctly grasping the position of the cardiac stimulation conduction path and the state of stimulation conduction is the basis for understanding physiological activity of the heart.

In addition, the cardiac stimulation conduction mode of the heart which exhibits abnormal rhythm such as the occurrence of arrhythmia is greatly different from the normal cardiac stimulation conduction mode. Physiological activities during abnormal times include abnormal stimulus generation sites, constant stimulus generation sites, abnormal stimulus conduction velocity, and abnormal stimulus conduction pathways, etc. , There are many forms.

However, conventionally, several methods for displaying the cardiac stimulation conduction path in an anatomical manner were considered and a model was devised, but a method for expressing conduction of stimulation and a model were not found. In other words, there was no suitable method and model to show the conduction pattern of cardiac stimulation including temporal and dynamic factors. Therefore, it was difficult to understand the conduction mode of cardiac stimulation.
Furthermore, there was no method or model to distinguish and display the normal cardiac stimulation conduction mode and the abnormal cardiac stimulation conduction mode. Therefore, although many conduct on the same stimulation conduction path, it is difficult to understand many kinds of cardiac stimulation conduction modes, and it is also difficult to explain to a third party.

Further, there is no method or model for correlating and displaying the electrocardiogram waveform, which is a visualization of the cardiac stimulation conduction mode observed from the outside of the living body, and the cardiac stimulation conduction mode. Therefore, the learning method of memorizing the meaning of the ECG waveform by memorizing it completely, and the explanation of the ECG waveform without explanation of the cause and effect are common in the field of ECG learning and ECG explanation to patients. Is difficult to understand. "

An object of the present invention is to obtain a method and a model that can schematically and dynamically show a cardiac stimulation conduction mode, which cannot be achieved by a conventional model. Furthermore, a specific cardiac stimulation conduction mode and an electrocardiogram waveform observed in the cardiac stimulation conduction mode are simultaneously displayed,
Obtaining methods and models is a technical task.

[0009]

The schematic display method and model of the cardiac stimulation conduction mode according to the present invention solves the above-mentioned problems and is as follows. That is, a plurality of light emitting means or liquid crystal display means are arranged at a position approximately corresponding to a cardiac stimulation conduction path of a three-dimensional or planar heart model, and these are turned on or blinked to indicate the cardiac stimulation conduction mode.

As a planar heart model, a cross section of the heart is drawn on a plate or a hollow thin plate made of wood or synthetic resin, or the cross section of the heart is shaped by a material different from the thin plate. The one that is fitted on the thin plate is used. As the three-dimensional model, not only a model in which the heart is divided into two or four parts by a conventional colored synthetic resin or plaster, but also a model made of a transparent member such as acrylic can be used. Synthetic resins are suitable for reproducing the texture of the heart. The use of a transparent member is useful for understanding the anatomical position of the cardiac stimulus pathway, because the appearance of the whole heart and the cardiac stimulus pathway inside the heart can be expressed at one time. Also, a model in which the shape of the heart is simply formed by a linear member may be used. It is also possible to use a moving heart model (Actual Kokoku Sho 47-7076) having a built-in lamp for blinking the blood flow.

A miniature bulb, a light emitting diode or the like is used as the plurality of light emitting means arranged at a position approximately corresponding to the cardiac stimulation conduction path. The light emitting means may be monochromatic, but due to their role in stimulating conduction, the use of color-coded light emitting means makes it easier to understand the stimulus conduction mode. In particular, some light emitting diodes emit a plurality of colors even with one light emitting diode, which is convenient. In that case, for example, in a series of conduction of stimuli, the site where the stimulus serving as the pacemaker is generated is expressed in red, and the other sites where the stimulus is simply transmitted are expressed in green. Further, the member showing the cardiac stimulation conduction path may be liquid crystal display means. With the liquid crystal display means, the heart model itself, that is, the contour of the heart and the inside of the heart such as the atria, ventricles, and atrioventricular valves can be displayed on the liquid crystal.

[0012] It is preferable that the cardiac stimulation conduction mode schematically displayed can display not only a normal cardiac stimulation conduction mode but also an abnormal cardiac stimulation conduction mode. By doing so,
Understand the stimulus conduction mode. The plurality of stimulus conduction modes are a plurality of light emitting means or liquid crystal display means (hereinafter, referred to as “light emitting means etc.”) arranged at a position approximately corresponding to a stimulus conduction path, in order and speed in accordance with a specific stimulus conduction mode. In this case, it is possible to selectively display by sequentially lighting or blinking sequentially. In other words, when displaying a normal cardiac conduction mode, an order roughly correlated with the normal conduction mode (stimulation conduction occurs in the sinoatrial node, internodal conduction pathway, atrioventricular node, His bundle, His bundle, left leg, and Stimulation is conducted to the right leg of the His bundle and Purkinje fibers, and a series of stimulation conduction ends.)
And the speed (the conduction velocity in the atrioventricular node is slightly slower than the conduction velocity in other parts), the light emitting means and the like are sequentially turned on or blinked. When displaying an abnormal cardiac stimulus conduction mode, the light emitting means and the like are sequentially turned on or blinked in an order and speed according to the specific abnormal cardiac stimulus conduction mode. (Alternatively, a plurality of hearts may be drawn on one flat panel, and the light-emitting means etc. arranged in each may be turned on or blinking so as to schematically show one type of stimulus conduction mode. This is a suboptimal means because it makes the appearance complicated.) At this time, for example, the part where normal stimulation is conducted is represented by green emission, and the part where stimulation conduction is abnormal is represented by red emission. If you color-code such as, it is easy to understand the abnormal part. The stimulus conduction mode to be displayed is selected by the user with the selection switch formed on the model. Alternatively, the display of several kinds of stimulation conduction modes may be repeated sequentially.

Further, by sequentially lighting or blinking a plurality of light emitting means or the like arranged at a position approximately corresponding to the cardiac stimulation conduction path of the heart model, a specific stimulation conduction mode is schematically displayed, and at the same time, the specific stimulation conduction mode is displayed. The characteristic and typical electrocardiogram waveforms observed in the stimulation conduction mode are displayed by illuminating or sequentially blinking a plurality of light-emitting means provided in the electrocardiogram waveform display part of the heart model to display a specific A cardiac stimulation conduction mode and an electrocardiogram waveform observed in such a specific cardiac stimulation conduction mode are simultaneously displayed in a correlated manner. In particular, when the light emitting means etc. of the electrocardiogram waveform display section are made to blink sequentially in an electrocardiographic wave shape as the progression of the electrocardiographic waveform in correlation with the sequential blinking of the light emitting means etc. showing the cardiac stimulation conduction mode, The relationship between the stimulus conduction mode and the ECG waveform is well understood. That is, for example, when displaying a normal sinus rhythm, the light emitting means of the electrocardiogram display unit or the like emits a P wave at the timing at which the light emitting means or the like from the sinus node to the internodal conduction path of the cardiac stimulation conduction path sequentially blinks. The lights are sequentially turned on or off to display, and the lights, etc. of the electrocardiogram waveform display section are turned on or off sequentially so as to form a QRS group at the timing at which the lights, etc. from the His bundle to the Purkinje fiber are sequentially flashed. . Similarly, when displaying a specific arrhythmia, the cardiac stimulus conduction mode and the electrocardiographic waveform progression characteristic of the arrhythmia are also shown at the same time.

In these cases, it is preferable that the user of the model can adjust the blinking speed of the light emitting means or the like at will. By doing so, the heart rate differs from the actual cardiac fiber stimulation conduction mode, but the user can observe the relationship between the cardiac stimulation conduction mode and the electrocardiogram waveform with a sufficient margin.

The electrocardiogram waveform display section may be inside the part showing the heart in the model heart, or may be outside the part showing the heart. As a method of arranging the light emitting means and the like at a predetermined position of the electrocardiogram, the light emitting means and the like are arranged linearly in accordance with some typical types of electrocardiographic waveforms, or the entire surface of the electrocardiogram waveform display portion is densely emitted. There is a method of filling by means.

Further, it is preferable to emit a signal sound in correlation with blinking of a plurality of light emitting means arranged at a position approximately corresponding to the cardiac stimulation conduction path. The signal sound may be emitted in accordance with the lighting or blinking of the light emitting means or the like corresponding to the site of the stimulus (a part of the sinus node in normal sinus rhythm), or in accordance with the sequential blinking of the light emitting means or the like. Therefore, it may be intermittent. When expressing an abnormal stimulating conduction mode such as arrhythmia, it is preferable to emit a signal sound different from that when the stimulating conduction mode is normal. Also, when displaying a normal stimulation conduction pattern (and ECG waveform), a signal sound similar to a normal heart sound is displayed, and when displaying an abnormal stimulation conduction pattern (and ECG waveform), a peculiar heart sound auscultated in that case. It is more preferable to emit a signal sound similar to that in synchronization with the state of stimulus conduction (sequential blinking of the light emitting means etc.).

[0017]

The above technical means operates as follows.
That is, by arranging the light emitting means or the liquid crystal display means at a position corresponding to the ascending cardiac conduction path and sequentially lighting or blinking them in the order and speed corresponding to the cardiac stimulation conduction mode, the anatomy of the cardiac stimulation conduction path. According to the target position, the cardiac stimulation conduction mode can be expressed dynamically over time.

Further, by changing the lighting or blinking pattern of the light emitting means or the liquid crystal display means, a normal cardiac stimulation conduction mode and various abnormal cardiac stimulation conduction modes when an arrhythmia occurs can be selected on the same model. Can be identified and displayed.

In the case of simultaneously displaying the electrocardiogram waveform,
It is possible to simultaneously display the cardiac stimulation conduction mode, which is a physiological activity inside the heart, and the electrocardiogram waveform, which is the result of observing it from the outside of the living body, in a correlated and contrasting manner.

If a signal sound is emitted together with lighting or blinking of the light emitting means or the liquid crystal display means representing the cardiac stimulation conduction mode, it is possible to experience a change in the stimulation conduction mode with time not only visually but also auditory sense. Further, if the signal tone is changed depending on whether the displayed cardiac stimulation conduction mode is normal or abnormal, normal and abnormal can be discriminated and recognized not only visually but also by hearing.

[0021]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 conceptually shows an embodiment of the present invention. A left heart atrium 7, a right atrium 8, a left ventricle 9, a right ventricle 10, an anterior vena cava 11, a posterior vena cava 12, etc. are schematically drawn as a cross-sectional view of the heart on a panel 6 made of a hard synthetic resin to form a heart model 1. .

On the heart model 1, a large number of small windows are provided at positions where a typical cardiac stimulation conduction path 2 exists, and a large number of light emitting diodes L1 to L35 and L17 are provided in the respective small windows.
r to L35r are arranged (small windows are not shown). Specifically, the sinoatrial node (L1
~ L3) ・ Internodal conduction path (L4 ~ L8) ・ Atrioventricular node (L)
9-L11), His bundle (12-L16), His bundle left leg (L17-L35), His bundle right leg (L17r-L35)
r) is indicated. (In this example, in order to display the cardiac stimulation conduction path more simply, the internodal conduction path that is assumed to be plural is shown as only one, and the Purkinje fiber and the accessory conduction path are not provided.) At the bottom of the heart model,
Those light emitting diodes L1 to L35 and L17r to L
35r flashes according to a specific stimulation conduction mode,
An electric push button type selection switch 4 for selecting the model pattern to be displayed is arranged. The selection switch 4 is not limited to the push button type as in the present embodiment, but a rotary switch or any other type can be freely selected. A large number of small windows are densely formed in the lower left corner of the heart model 1 and light emitting diodes L are densely arranged (small windows are not shown). This portion is the electrocardiogram waveform display unit 3. A speaker 5 for emitting a signal sound is provided in the lower right corner.

FIG. 2 is a time chart of blinking of the light emitting diodes L1 to L35 when a normal cardiac stimulation conduction mode, that is, a normal sinus rhythm, is used as a model pattern as one embodiment of the present invention. The horizontal axis represents time (seconds). The rise of the base line in the vertical axis direction is caused by the light emitting diodes L1 to L3.
5 shows the lighting of each. Light emitting diodes L1 to L35
In the embodiment shown in FIG. 1, the light emitting diodes L are arranged at equal intervals in the portion corresponding to the cardiac stimulation conduction path 3.
1 to L35 correspond to the same numbers. Blinking of the light emitting diodes L17r to L35r is L17 to L3.
Since the pattern is the same as that of No. 5, the illustration is omitted.

L1 to L3 are light emitting diodes for indicating a sinoatrial node. In the pattern in this example,
L1 illuminates every 0.5 seconds for 0.005 seconds prior to blinking of other light emitting diodes. That is, it is schematically shown that the sinoatrial node serves as a pacemaker and stimuli are generated at a frequency (heart rate) of 120 times / minute. At this time, when a signal sound is generated in accordance with the lighting of the light emitting diode L1, the stimulus generation site and the generation frequency become audibly clear. The light-emitting diode L2 and then the light-emitting diode L3 are sequentially lit for 0.005 seconds, which is the same as the light-emitting diode L1 blinking. The light emitting diodes L4 to L8 are light emitting diodes for indicating internodal conduction paths. In normal sinus rhythm, which is a normal cardiac conduction mode, the conduction velocity of the internodal conduction path is equal to that of the sinus node. Therefore, the light emitting diodes L4 to L8 are the same as the light emitting diodes L1 to L3.
It continues to flash and lights for 0.005 seconds, which is the same as before. The light emitting diodes L9 to L11 are light emitting diodes for indicating the AV node. The conduction velocity of the stimulation in the AV node is slightly slower than the conduction velocity of the stimulation in the other cardiac stimulation conduction paths. In order to illustrate it, the light emitting diode L8 is followed by the light emitting diodes L9 to L11.
Is slightly longer than the conventional light emitting diode, 0.02
Lights up sequentially for each second. Light emitting diodes L12 to L16
Indicates the His bundle, and the light emitting diodes L17 to L35 indicate the His bundle left leg (and the His bundle right leg). Both the bundle of His and the bundle of His left leg (and right leg) are lit for 0.005 seconds each.
After that, the state in which all the light emitting diodes are turned off is 0.
It lasts 28 seconds. These are a series of light emitting diode blinking patterns showing the cardiac stimulation conduction mode in one cardiac cycle (one heartbeat) of normal sinus rhythm. In normal sinus rhythm, these series of blinks are repeated regularly.

As another embodiment, if the next light emitting diode is turned on before a short time when the light emitting diode to be turned on is turned off, the flow of blinking of the light emitting diode can be expressed smoothly. Moreover, the light emitting diode that has been turned on once does not turn off even if the next light emitting diode is turned on.
It is also possible to keep lighting for a period indicating one cardiac cycle (heartbeat) and turn off all the light emitting diodes all together shortly before the start of the next cardiac cycle.

As another embodiment of the present invention, FIG. 3 is a time chart of blinking of a light emitting diode when a precocious pulsation, which is one form of arrhythmia, is used as a model pattern. The lighting time of the light emitting diodes L1 to L35 once is
The description is omitted because it is the same as the case of the normal sinus rhythm shown in FIG. In addition, the light emitting diodes L17r to L35r
The blinking of is a pattern similar to that of L17 to L35, and thus is not shown. In normal sinus rhythm, the sinoatrial node is always the pacemaker, so the start site of a series of blinking light emitting diodes in one cardiac cycle was always the light emitting diode L1. However, in the precocious pulsation (more specifically, the two-stage pulse in the precocious rhythm), the sinoatrial node, which is the site of normal stimulation, and the atrioventricular node, which is the site of abnormal stimulation, are present. , Alternately generate stimuli. Then, only when the stimulation occurs in the atrioventricular node, which is an abnormal site, the upper part (internodal conduction path and sinoatrial node) higher than the atrioventricular node is retrogradely stimulated in the opposite direction. It is transmitted.

Of the flow of blinking light emitting diodes shown in the time chart of FIG. 3, the first group shows the case where stimulation is generated from the sinus node. That is, the light emitting diode L
The blinking starts from 1, and the subsequent light emitting diodes sequentially blink like the normal sinus rhythm. The second group shows the case where abnormal stimulation is generated from the AV node. Blinking starts from the light emitting diode L9 which is one of the light emitting diodes indicating the AV node, and a series of blinking of the other light emitting diodes starts. After the light emitting diode L10, like the normal sinus rhythm, the light emitting diodes sequentially blink in a descending manner, but above the light emitting diode L8, contrary to the normal sinus rhythm, the light emitting diodes sequentially blink in a retrograde manner. When making a signal tone,
It is preferable that when the light emitting diode L1 in the first group is lit, a sound similar to that in the case of normal sinus tuning is set, and when the light emitting diode L9 in the second group is lit, a different sound is set. That is, by differentiating the signal sound between the normal stimulus occurrence and the abnormal stimulus occurrence, it is possible to distinguish the auditory normal stimulus occurrence from the abnormal stimulus occurrence.

FIG. 4 is a time chart showing blinking of the light emitting diode when the His bundle left leg block is used as a model pattern. The frequency of stimulus generation and the direction of stimulus conduction are similar to those of normal sinus rhythm, but no stimulus is transmitted from a certain part of the left leg of the bundle of His to the lower part. In the embodiment shown in this figure, after the light emitting diode L25 (that is, one point in the left leg of the His bundle), the light is not lit, and the stimulus is not transmitted to the lower part. Although a time chart of blinking the light emitting diodes L17r to L35r is not shown, the light emitting diode L1 having the normal sinus rhythm shown in FIG.
7 to L35 are common.

FIG. 5 shows an embodiment showing the electrocardiogram waveform display unit 3, of which A is the electrocardiogram waveform display unit 3 for showing the waveform in normal sinus rhythm. From left to right,
The light emitting diodes are sequentially blinked to represent the progress of the waveform. In this case, the position where the stimulus is moving in the cardiac stimulation conduction path in the living body and the electrocardiographic waveform component observed outside the living body at that time are the light emitting diode of the display portion showing the cardiac stimulation conduction path 2 and the electrocardiogram. The waveform is displayed in synchronization with the light emitting diode of the display unit 3. Although a time chart is omitted, for example, the light emitting diode Lp indicated by a solid circle in FIG. 5 indicates the start of the P wave, that is, the occurrence of stimulation in normal sinus rhythm, and the light emission in FIGS. By blinking at the same time as the diode L1, it is possible to understand at a glance what relationship the electrical activity of the heart inside the heart of the living body and the electrocardiogram waveform measured and observed from outside the living body are.

In FIG. 6, a large number of light emitting diodes L are densely arranged on the same plane, and the electrocardiographic waveform of normal sinus rhythm and the electrocardiographic waveform when various arrhythmias occur can be selected by the position and pattern of the blinking light emitting diodes. 6 is an embodiment showing an electrocardiogram waveform display unit 3 different from that shown in FIG. The solid black circle indicates the light emitting diode L that is lit. That is, in FIG. 6, an electrocardiogram waveform of normal sinus rhythm is displayed. In the present example, the waveform of the electrocardiogram observed in the cardiac stimulation conduction mode of the displayed model pattern without sequentially turning on or blinking the light emitting diodes L,
Simultaneous "lighting" of multiple light-emitting diodes L that follow the waveform
Is displayed in. However, in this case, the site where the stimulus is being transmitted and the configuration of the electrocardiogram waveform cannot be displayed dynamically and in a correlated manner.

FIG. 7 is a block conceptual diagram showing an example of means for implementing the present invention. The arrows in the figure indicate the direction of signal flow. A light emitting diode L is used as the electric light emitting body.

By the crystal oscillator 13, the light emitting diode L
Obtain the reference frequency required for accurate blinking temporal control. The cardiac stimulation conduction mode to be displayed, that is, the model pattern, is selected by the pattern selector 1 when the user turns on an arbitrary electrical switch (not shown).
Select via 4. The reference frequency from the crystal oscillator 13 is divided by the decade counter 15 and converted into a frequency suitable for the model pattern selected via the pattern selector 14. Reference numeral 16 is a system controller, which is based on the frequency derived from the decade counter 15 and follows the model pattern and is based on the light emitting diode L.
A control signal for sequentially blinking is emitted. The number of clocks of the control signal is counted by the up / down counter 17, and pulses are sequentially sent to the plurality of decoders 19 under the control of the start position of turning on / off the light input to the data input 18. The decoder 19 decodes the pulse signal and outputs a light emitting diode blinking signal. The blinking signal causes the LED (light emitting diode) driver 20 to amplify the current and blinks the display light emitting diode L.
Although not shown in the figure, if a signal sound generator is provided in all or some of the display light emitting diodes L, a signal sound is emitted together with the lighting of the light emitting diodes.

FIG. 8 shows another embodiment for carrying out the present invention, in which a rotary switch is used as a control circuit and a normal sinus rhythm which is a normal cardiac stimulation conduction mode is used as a model pattern. In the figure, M is a motor and S is a slider. The terminals L1 'to L16' are connected to the light emitting diode L1.
~ Connect to L16. The terminals L17 'to L35' are connected to the light emitting diodes L17 to L35 and L17r to L35r having a common blinking pattern. When the slider S rotates clockwise by the rotation of the motor M, the contacts of the slider S and the terminals L1 'to L35' are sequentially closed. Terminal L1 '
The light emitting diodes L1 to L35 are turned on when the contacts of the sliders L35 'to the slider S are closed.

The rotation speed of the slider S and the terminal L1 '
The positions and lengths (contact timing and contact time of contact with the slider) of the contacts of the slider L35 'with the rotating slider S are set according to the model pattern. In this embodiment, based on the time chart shown in FIG. 2, the positions and lengths of the contact surfaces of the terminals L1 'to L35' connected to the light emitting diodes L1 to L35 and L17r to L35r with the slider S are determined. It is set. The slider S rotates clockwise at a constant speed of 0.5 seconds. First, the contact point between the slider S and the terminal L1 'is closed for 0.005 seconds (equivalent to one hundredth of one rotation of the slider S1). Then, the contact with the terminal L2 'and the contact with the terminal L3' are sequentially closed. L9 'to L11' are 0.02 following L8 '
Close each second. L12'-L35 'contacts are 0.00
After sequentially closing for 5 seconds each, all the contacts are opened for 0.28 seconds, and the slider S completes one rotation, thus completing one cardiac cycle. The slider continues to rotate,
The next cardiac cycle begins.

In this embodiment, if the rotation speed of the slider S is increased, the positions and lengths of the contacts of the terminals L1 'to L35' with the rotating slider S are not changed.
Can express sinus tachycardia. If the rotation speed is slowed down, sinus bradycardia can be expressed. Further, by setting the rotation speed, the position and length of the contact point in various ways, it can be a control circuit for expressing various stimulation conduction modes. Also,
To make a control circuit for expressing many stimulus conduction modes with one rotary switch by keeping the rotation speed constant, installing multiple sliders, and setting multiple positions and lengths of contact points with respect to one slider. Is also possible. Further, a manual rotating handle may be used as a power source for rotating the slider instead of the motor, but this is the second best means because the mechanism for keeping the rotating speed of the slider constant becomes complicated.

[0036]

EFFECTS OF THE INVENTION By expressing the cardiac stimulation conduction mode using the cardiac stimulation conduction model according to the present invention by the method for schematically displaying the cardiac stimulation conduction mode according to the present invention, the temporal and dynamic factors are included. Accurately explaining or understanding the cardiac stimulation conduction mode is dramatically facilitated. In particular, many types of abnormal stimulus conduction modes can be schematically identified and displayed on the same model, which makes it easy to explain or understand the reason why the abnormal stimulus conduction modes are abnormal. Further, it is possible to display at a glance what kind of (positional and orientation) stimulation of the heart the elements of the electrocardiographic waveform are, which facilitates a fundamental understanding of the electrocardiographic waveform. These things are extremely effective as a method and model for the education of medical students, nursing students, veterinary students, and explanations for patients with actual heart disease, and informed consent has been recognized in recent years for its importance. It can also help to facilitate It is also useful for the clinician to correctly understand the complicated physiological phenomenon of the heart disease of the patient and to examine an appropriate coping method to be performed when an arrhythmia occurs.

[Brief description of drawings]

FIG. 1 is an external perspective view showing an embodiment of the present invention.

FIG. 2 is an example of a time chart of blinking a light emitting diode showing normal sinus rhythm.

FIG. 3 is an example of a time chart of blinking of a light emitting diode showing a joint-type early pulsation.

FIG. 4 is an example of a time chart of blinking a light emitting diode representing a left bundle block of a His bundle.

FIG. 5 is a front view showing an embodiment of an electrocardiogram waveform display unit.

FIG. 6 is a front view showing an embodiment of an electrocardiogram waveform display unit.

FIG. 7 is a block conceptual diagram showing an embodiment of the present invention.

FIG. 8 is a diagram showing a rotary switch of an embodiment as a control circuit.

[Explanation of symbols]

1 ... Heart model, 2 ... Heart stimulation conduction path, 3 ...
... Electrocardiogram waveform display 4, ... Selection switch, 5
・ ・ ・ ・ Speaker, 6 ・ ・ ・ ・ Panel, 7 ・ ・ ・ ・ ・ ・ Left atrium, 8 ・ ・ ・ ・ Right atrium, 9 ・ ・ ・ ・ Left ventricle, 10 Right ventricle, 11 ・ ・ ・ ・ Anterior vena cava, 12 ... the posterior vena cava, 1
3 ... ・ Crystal oscillator, 14 ... Pattern selector, 15 ... Decade counter, 16 ...
System controller, 17 ... Up / down counter, 18 ... Data input, 19 ...
・ Decoder, 20 ・ ・ ・ ・ LED driver, L ・
・ ・ ・ Light emitting diode, L1 to L3 ・ ・ ・ Light emitting diode representing sinoatrial node, L4 to L8 ・ ・ ・ Light emitting diode representing internodal conduction path, L9 to L11 ・ ・ ・ Light emitting diode representing atrioventricular node , L12 to L161 ... A light emitting diode representing a His bundle, L17 to L35 ... A light emitting diode representing a His bundle left leg, L17r to L35r.
..Light-emitting diode representing the right leg of the His bundle, LD ...
Light-emitting diodes representing the start position of the wave, L1 'to L16.
... Terminals connected to light emitting diodes L1 to L16, L
17'-L35 '...- Light emitting diodes L17-L3
5 and terminals connected to L17r to L35r, T ...
·Connecting terminal.

Claims (9)

[Claims] 1. A three-dimensional or planar heart model (1)
The cardiac stimulation is characterized by arranging a plurality of light emitting means or liquid crystal display means at a position approximately corresponding to the cardiac stimulation conduction path (2) and lighting or blinking them to indicate the cardiac stimulation conduction mode. Schematic display method of conduction mode. 2. A cardiac stimulation conduction mode displayed schematically is
Orders and velocities of normal and abnormal cardiac stimulation conduction modes, in which a plurality of light emitting means or liquid crystal display means arranged at positions approximately corresponding to the cardiac stimulation conduction path (2) are roughly correlated with the normal cardiac stimulation conduction mode, Alternatively, the normal and abnormal cardiac stimulation conduction modes are selectively displayed by sequentially lighting or blinking in a sequence and a speed that are roughly correlated with the abnormal cardiac stimulation conduction mode. The method described. 3. A cardiac stimulation conduction path (2) of a heart model (1)
By sequentially blinking a plurality of light emitting means or liquid crystal display means arranged in a position substantially corresponding to, a specific stimulation conduction mode is schematically displayed, and at the same time, an electrocardiogram waveform observed in the specific stimulation conduction mode is displayed. By displaying a plurality of light emitting means or liquid crystal display means provided in the electrocardiogram waveform display section (3) inside or outside the heart model by lighting or sequentially blinking, a specific cardiac stimulation conduction mode and a specific cardiac stimulation are obtained. The method according to claim 2, wherein the electrocardiographic waveform observed in the conduction mode is simultaneously and correlatively displayed. 4. A three-dimensional or planar heart model (1)
2. A model for cardiac stimulation conduction mode display, characterized in that a plurality of light emitting means or liquid crystal display means are arranged at a position approximately corresponding to the cardiac stimulation conduction path (2). 5. The cardiac stimulation conduction path (2) of the heart model (1)
5. The model according to claim 4, wherein the plurality of light emitting means or liquid crystal display means arranged at positions substantially corresponding to the above are configured so as to be sequentially turned on or blinked in an order and a speed substantially correlated with the cardiac stimulation conduction mode. 6. An electrocardiogram waveform display section (3) having a light emitting means or a liquid crystal display means arranged at a predetermined position of the electrocardiogram and configured to schematically show an electrocardiogram waveform. The model according to claim 4 or 5. 7. The electrocardiographic waveform display section (3) is characterized in that the light emitting means or the liquid crystal display means sequentially lights up or blinks sequentially to schematically display the progress of the electrocardiographic waveform. Model of. 8. The cardiac stimulation conduction mode displayed schematically is
The model according to claim 5, 6 or 7, wherein the model has a normal cardiac stimulation conduction mode and a plurality of types of abnormal cardiac stimulation conduction modes, and is configured to be able to selectively display any one of them. 9. A means for emitting a signal sound in correlation with blinking of a plurality of light emitting means or liquid crystal display means arranged at a position approximately corresponding to the cardiac stimulation conduction path (2), characterized by comprising means. The model according to Item 5, 6, 7 or 8.