CN115206151A - Human vital sign multi-parameter synchronous simulation device - Google Patents

Abstract

The invention discloses a human body vital sign multi-parameter synchronous simulation device which comprises a power supply, a main control board, a Bluetooth interaction device, a WiFi interaction device, a wired transmission device and a data exchanger, and further comprises a main control processor, an electrocardio simulation device, a respiration simulation device, a body temperature simulation device, a blood pressure signal simulation device, an oxyhemoglobin saturation simulation device and an electrocardio signal simulation device of a defibrillator, wherein the main control board is provided with a data exchange port and is connected to the simulation devices through the data exchange port.

Description

Human vital sign multi-parameter synchronous simulation device

Technical Field

The invention relates to a simulation device, in particular to a human body vital sign multi-parameter synchronous simulation device.

Background

At present, medical simulation teaching is the extended application of simulation teaching in medicine and pharmacology or clinical medicine, generally speaking, the simulation teaching is combined with modern electronic technology, communication technology, computer programming technology and multimedia technology more closely, which is a necessary way for the reformation of modern medical teaching, in medical education, vital sign monitoring is an extremely important subject, at present, no comprehensive vital sign simulation monitor is available in the market, and the simulation of a single vital sign is complicated in a comprehensive course, so that the education of the type has disadvantages.

Disclosure of Invention

In order to overcome the defects in the background art, the invention discloses a human body vital sign multi-parameter synchronous simulation device which can simultaneously simulate a large amount of vital sign signal data of real human bodies, such as electrocardio, respiration, blood pressure, blood oxygen and the like.

In order to realize the purpose of the invention, the invention adopts the following technical scheme: the utility model provides a human vital sign multi-parameter synchronization analogue means, includes power, main control board, bluetooth interactive device, wiFi interactive device, wired transmission device, data exchanger, still includes main control treater, electrocardio analogue means, breathes analogue means, body temperature analogue means, blood pressure signal analogue means, oxyhemoglobin saturation analogue means, defibrillator electrocardio signal analogue means, the main control board be equipped with the data exchange mouth, the main control board is connected to each analogue means through the data exchange mouth.

Preferably, the main control processor comprises a main control single chip microcomputer, a key circuit for controlling each device, a flash memory chip, a communication interface connected with each device through a control line, a touch screen input interface, a TFT screen input interface and a power conversion device, wherein the key circuit comprises nine parallel keys, the input voltage of the key circuit is 3.3V, a grounding end is shared, pins 4 and 30 of the main control single chip microcomputer are connected with a restarting power circuit, pins 2, 5, 10, 16, 20, 34, 46 and 47 are connected with a key circuit signal input end, the pin 46 is grounded, the pins 22 to 27 are connected with keys, and the pins 11, 21, 35 and 36 are grounded.

Preferably, the electrocardiogram analog device comprises a lead device which can be connected to a specific part of a human body, a signal input and attenuation circuit, a signal amplifier which is connected to the lead device through a data line, and a control line which is connected with the signal amplifier and a main control processor, wherein the lead device comprises a lead and an electrode plate, and the electrode plate is made of silver or silver chloride.

Preferably, there are twelve lead sets, standard (I, II, III), unipolar compression limb leads (aVR, aVL, aVF) and unipolar chest leads (V1, V2, V3, V4, V5, V6).

Preferably, the breathing simulation device consists of a high-impedance resistor and a PNP type triode, and the breathing simulation device is connected to the main control processor through a control line.

Preferably, the body temperature simulation device consists of a thermistor, a rectifying and filtering circuit, a signal amplifier and a control line, wherein the signal amplifier comprises an electric signal amplification device, an AD and digital signal conversion device.

Preferably, blood pressure signal analogue means includes invasive blood pressure analogue means and noninvasive blood pressure analogue means, invasive blood pressure analogue means include puncture pipe, pressure sensor, pressure wave signal converter and control line, noninvasive blood pressure analogue means include air pocket and the shared pressure sensor of invasive blood pressure analogue means, shock wave signal amplifier, ripples signal converter and control line, pressure sensor 2, 4, 5 number pins be the input, 1, 3 number pins are signal output. No. 6 leads to ground.

Preferably, the oxyhemoglobin saturation simulation device comprises an infrared light-emitting driving device, a waveform generating device and a signal conversion device, wherein the infrared light-emitting driving device comprises an infrared LED and a rheostat connected between the infrared LED and a grounding end, the defibrillator electrocardiosignal simulation device comprises a defibrillation quantity release detection circuit, a defibrillator and an ECG signal output circuit, the blood pressure signal simulation device comprises a pulse monitoring device, the oxyhemoglobin saturation simulation device comprises a pulse rate monitoring device, the electrocardio simulation device, a respiration simulation device, a body temperature simulation device, a blood pressure signal simulation device, the oxyhemoglobin saturation simulation device and the defibrillator electrocardiosignal simulation device are all provided with independent control single-chip microcomputers, and all the control single-chip microcomputers are connected with the main control processor.

Preferably, pins 1, 12, 31, 47, 63 of a control singlechip of the electrocardiogram simulation device are grounded, pins 64 are connected with a 3.3V power supply, pins 14, 15, 16, 17, 22, 23, 26, 27, 58, 59, 61, 62 are connected with a signal input and attenuation circuit, a protective resistor is connected behind the connection end of the signal input and attenuation circuit, the attenuation resistor is connected with a main circuit of the protective resistor, a filter capacitor is connected with a branch circuit, the filter capacitor is grounded, the attenuation resistor is connected with a grounding terminal and a high-impedance resistor, the number of the signal input and attenuation circuit is more than 1 group, pins 14, 15, 16, 17 of the control singlechip of the blood pressure signal simulation device are connected with the power supply, pin 1 is connected with a pulse waveform acquisition terminal of a pressure sensor, pin 2 is connected with a static pressure acquisition terminal of the pressure sensor, the pins 2, 4 and 5 of the pressure sensor are input ends and are connected with a signal amplifier, the pins 1 and 3 are output ends and are directly connected with the signal amplifier and are input to a static pressure acquisition end together, wherein the main circuit of the pin 1 is connected with five signal amplifiers, the tail end of the main circuit is connected with a pulse waveform acquisition end, the pins 13, 19, 32, 48 and 64 of the control singlechip of the blood oxygen saturation simulation device are connected with a 3.3V power supply, pins 12 and 60 are grounded, pins 24 and 25 are connected with a waveform generating device, pin 15 is connected with a signal conversion device, two signal amplifiers are connected on a main circuit of the waveform generating device, pins 10, 14, 15, 16, 17 and 37 of a control singlechip of the defibrillator electrocardiosignal analog device are connected with a 3.3V power supply, pins 4, 5 and 7 are connected with an ECG signal output circuit, and pin 20 is connected with a defibrillation quantity release detection circuit.

Compared with the prior art, the invention well solves the problem that the main control board can not synchronize parameters to control the modules to work cooperatively, a complete multi-parameter vital sign signal simulation system is formed, the collected electrocardiosignals of the human body, particularly various abnormal electrocardio waveforms and other waveforms are digitally stored through the electrocardio collection equipment, the data of the electrocardio signals are downloaded to the main control board through computer software, the digitalized electrocardio waveforms can be restored into analog signals through the electrocardio simulation module part by the main control board and are provided for the electrocardio collection equipment to be collected, the working synchronism of each simulator is the consistency of the data when the simulator simulates the vital signs of the human body, and the collected data has synchronism when the vital signs of the human body are collected, so the invention can synchronously restore the data of a plurality of vital sign parameters collected from the human body, and in addition, different parameter combinations simulating various human bodies can be set for simulating the change of the vital sign parameters when the human body is attacked.

Drawings

FIG. 1 is a circuit diagram of a master control single chip

FIG. 2 is a circuit diagram of a key input circuit

FIG. 3 is a circuit diagram of flash memory connection

FIG. 4 is a circuit diagram of a single chip microcomputer for controlling electrocardio-respiration

FIG. 5 is a circuit diagram of signal input and attenuation

FIG. 6 is a circuit diagram of a respiratory beat generation circuit

FIG. 7 is a circuit diagram of a defibrillation control single chip microcomputer

Fig. 8 is a defibrillation energy release detection circuit diagram

FIG. 9 is an ECG signal output circuit diagram

FIG. 10 is a circuit diagram of a blood pressure control single chip microcomputer

FIG. 11 is a circuit diagram of a pressure sensor and a signal output circuit

FIG. 12 is a circuit diagram of a single chip for controlling blood oxygen

FIG. 13 is a circuit diagram of an infrared photometer

FIG. 14 is a circuit diagram of a waveform generator

FIG. 15 is a circuit diagram of the blood oxygen signal receiving and converting circuit

Detailed Description

In order to make the technical solutions of the present invention better understood, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 15, a human body vital sign multi-parameter synchronous simulation device comprises a power supply, a main control board, a bluetooth interaction device, a WiFi interaction device, a wired transmission device, a data exchanger, a main control processor, an electrocardiogram simulation device, a respiration simulation device, a body temperature simulation device, a blood pressure signal simulation device, a blood oxygen saturation simulation device, and an electrocardiogram signal simulation device of a defibrillator, wherein the main control board is provided with a data exchange port and is connected to each simulation device through the data exchange port; the main control processor comprises a main control single chip microcomputer, a key circuit for controlling each device, a flash memory chip, a communication interface, a touch screen input interface, a TFT (thin film transistor) screen input interface and a power conversion device, wherein the communication interface is connected with each device through a control line, the key circuit comprises nine parallel keys, the input voltage of the key circuit is 3.3V, a shared grounding end is arranged, pins 4 and 30 of the main control single chip microcomputer are connected with a restarting power circuit, pins 2, 5, 10, 16, 20, 34, 46 and 47 are connected with a key circuit signal input end, the pin 46 is grounded, the pins 22 to 27 are connected with keys, and the pins 11, 21, 35 and 36 are grounded; the electrocardio-analog device comprises a lead device which can be connected to a specific part of a human body, a signal input and attenuation circuit, a signal amplifier which is connected to the lead device through a data line, and a control line which is connected with the signal amplifier and a main control processor, wherein the lead device consists of a lead and an electrode plate, and the electrode plate is made of silver or silver chloride; there are twelve lead devices, standard leads (I, II, III), unipolar compression limb leads (aVR, aVL, aVF) and unipolar chest leads (V1, V2, V3, V4, V5, V6); the breathing simulation device consists of a high-impedance resistor and a PNP type triode, and is connected to the main control processor through a control line; the body temperature simulation device consists of a thermistor, a rectifying and filtering circuit, a signal amplifier and a control line, wherein the signal amplifier comprises an electric signal amplification device, an AD and digital signal conversion device; blood pressure signal analogue means is including invasive blood pressure analogue means and noninvasive blood pressure analogue means, invasive blood pressure analogue means include puncture pipe, pressure sensor, pressure wave signal converter and control line, noninvasive blood pressure analogue means include air pocket and the shared pressure sensor of invasive blood pressure analogue means, vibrate ripples signal amplifier, ripples signal converter and control line, pressure sensor 2, 4, 5 number pins be the input, 1, 3 number pins are signal output part. No. 6 is connected with the ground; the blood oxygen saturation simulation device comprises an infrared light-emitting driving device, a waveform generating device and a signal conversion device, wherein the infrared light-emitting driving device comprises an infrared LED and a rheostat connected between the infrared LED and a grounding end; the defibrillator electrocardiosignal simulation device comprises a defibrillation quantity release detection circuit, a defibrillator and an ECG signal output circuit; the blood pressure signal simulation device comprises a pulse monitoring device, and the blood oxygen saturation simulation device comprises a pulse rate monitoring device; the electrocardio simulation device, the respiration simulation device, the body temperature simulation device, the blood pressure signal simulation device, the oxyhemoglobin saturation simulation device and the defibrillator electrocardio signal simulation device are all provided with independent control single-chip microcomputers, and all the control single-chip microcomputers are connected with the main control processor; the control singlechip 1, 12, 31, 47 and 63 pins of the electrocardio analog device are grounded, the 64 pin is connected with a 3.3V power supply, the 14, 15, 16, 17, 22, 23, 26, 27, 58, 59, 61 and 62 pins are connected with a signal input and attenuation circuit, a protective resistor is connected behind the connection end of the signal input and attenuation circuit, the attenuation resistor is connected on a main circuit of the protective resistor, a filter capacitor is connected on a branch circuit, the filter capacitor is grounded, the attenuation resistor and a grounding terminal are connected with a high-impedance resistor, and the number of the signal input and attenuation circuits is more than 1 group; pins 14, 15, 16 and 17 of a control singlechip of the blood pressure signal simulator are connected with a power supply, pin 1 is connected with a pulse waveform acquisition end of a pressure sensor, pin 2 is connected with a static pressure acquisition end of the pressure sensor, pins 2, 4 and 5 of the pressure sensor are input ends and connected with a signal amplifier, pins 1 and 3 are output ends and directly connected with the signal amplifier and input to the static pressure acquisition end together, wherein a main path of pin 1 is connected with five signal amplifiers, and the tail end of the main path is connected with the pulse waveform acquisition end; pins 13, 19, 32, 48 and 64 of a control singlechip of the blood oxygen saturation simulation device are connected with a 3.3v power supply, pins 12 and 60 are grounded, pins 24 and 25 are connected with a waveform generating device, a pin 15 is connected with a signal conversion device, and a main circuit of the waveform generating device is connected with two signal amplifiers; pins 10, 14, 15, 16, 17 and 37 of a control singlechip of the defibrillator electrocardiosignal simulation device are connected with a 3.3V power supply, pins 4, 5 and 7 are connected with an ECG signal output circuit, and a pin 20 is connected with a defibrillation quantity release detection circuit.

This product adopts ATMEL company's different model singlechips a plurality of, and each device passes through data line, control line connection, and its theory of operation is:

electrocardiogram measuring method

The measurement of a body surface ECG signal requires the measurement by a set of devices called lead systems. The lead is composed of a lead and electrodes, the electrode plate is usually of a silver/silver chloride type, and is attached to a specific position on a human body, so that tiny potential change on the body surface can be obtained, an original electrocardiosignal is obtained, the electrocardiosignal enters the input end of an amplifier of an electrocardio monitor or an electrocardiograph and other equipment through the lead, the voltage generated by the heart electrical excitation conduction system is a vector with the amplitude and the space direction changing along with time, and ECG signals measured by the electrodes placed on the body surface are different along with different positions of the electrode plate. To fully describe the activity of the heart, twelve different lead patterns in the horizontal and vertical directions are often recorded to clarify various important details in the ECG signal. The twelve lead modes are respectively as follows: standard leads (I, II, III), unipolar pressurized limb leads (aVR, aVL, aVF) and unipolar chest leads (V1, V2, V3, V4, V5, V6).

ECG circuit principle

The ECG circuit is mainly composed of three parts: signal acquisition, analog processing and digital processing. The functions of these three parts can be briefly described as follows:

1. signal acquisition: the electrode picks up physiological parameters of human body and converts them into electric signals.

2. And (3) simulation treatment: and the acquired signals are subjected to impedance matching, filtering, amplification and other processing through an analog circuit.

3. Digital processing: the part is the core part of the electrocardio circuit and mainly comprises an analog-digital converter, a microprocessor, a memory and the like. The analog-to-digital converter converts the analog signal of the human physiological parameter into a digital signal, and the microprocessor calculates, analyzes and stores the digital signal and outputs the analysis result to the upper computer through a serial port.

Principle of respiration measurement

The respiration measurement is based on the principle of impedance method. When a human body breathes, the fluctuation of the chest causes impedance change, and the change of the chest impedance modulates the amplitude of a high-frequency carrier signal. The modulated signal is detected and filtered and amplified by a measuring circuit, and then the direct current component in the signal is removed, so that the respiratory impedance change waveform signal is obtained.

Principle of SPO2 measurement

The method for measuring the blood oxygen saturation comprises the steps of collecting transmitted light signals of red light and infrared light of parts such as fingers and toes of a human body under the condition of pulse, processing the signals to obtain pulse waveforms of the red light and the infrared transmitted light, analyzing the pulse waveforms according to the principle that the blood of the human body absorbs light with two different wavelengths, and obtaining an SPO2 numerical value and a pulse rate calculation result according to a certain data algorithm.

Invasive blood pressure measuring principle

Invasive blood pressure can generally be monitored: arterial blood pressure, central venous pressure and pulmonary arterial pressure. The measurement principle is as follows: the catheter is first punctured and implanted into blood vessel of the tested part, the extracorporeal port of the catheter is connected directly to the pressure sensor, physiological saline is injected into the catheter, and the liquid has pressure transferring effect, so that the pressure inside the blood vessel is transferred via the liquid inside the catheter to the external pressure sensor to obtain dynamic waveform of the pressure inside the blood vessel.

Principle of temperature measurement

The body surface or body cavity temperature is measured by utilizing the characteristic that the thermistor has different resistance values along with the body temperature. The signal of the thermistor in the body temperature sensor is amplified and filtered, and then is converted into a digital signal through A/D, and the temperature corresponding to the thermistor can be obtained according to the digital signal.

Non-invasive blood pressure detection principle

The non-invasive blood pressure measurement uses an oscillation method, and the basic principle is as follows: when the noninvasive blood pressure measurement is carried out, the cuff is inflated firstly, and then the cuff is deflated slowly after a certain pressure is reached. If the pressure reached by inflation is greater than the systolic pressure of the body, the vessel is considered to be completely occluded, at which time there should be no pulsation of the pulse at the cuff. And then, the deflation is started, when the cuff pressure is smaller than the systolic pressure, the blood vessel is partially communicated, the pulse beat is gradually enhanced along with the reduction of the cuff pressure, and the pressure of the cuff fluctuates in a small range due to the influence of the pulse beat, namely, an oscillation signal is superposed on the pressure signal, and the oscillation signal is also gradually enhanced along with the reduction of the cuff pressure. However, when the cuff pressure is reduced to a certain level, the amplitude of the oscillation signal starts to decrease. This is mainly because the cuff pressure is reduced, so that the attenuation effect of the human subcutaneous tissue on the pulse beat is gradually enhanced. This attenuation is more and more pronounced as the cuff pressure continues to drop, and the amplitude of the oscillation signal is also more and more pronounced. Blood pressure can be measured using the ratio characteristic of this oscillation signal. It is based on the following theory: when the cuff pressure is equal to the diastolic pressure or the systolic pressure, the ratio of the amplitude of the corresponding oscillation wave to the maximum value of the amplitude in the oscillation wave is a relatively constant ratio. The maximum amplitude value is found out, the corresponding pressure is the average pressure, and the amplitude of the oscillation wave corresponding to the corresponding diastolic pressure or systolic pressure can be found out according to the determined ratio, so as to find out the pressure value of the diastolic pressure or the systolic pressure corresponding to the amplitude.

Defibrillator operating principle

A method of eliminating arrhythmias and restoring sinus rhythm by passing a relatively strong pulse of current through the heart is known as defibrillation or cardioversion. Pacing and defibrillation both treat arrhythmias with exogenous electrical current, both of which are methods of modern treatment. Cardiac pacing differs from cardioversion by: the latter is a transient high-energy pulse acting on the heart during electrical cardioversion, the duration is 4-10 ms, and the electric energy is 40-400J (joules). Devices for cardiac shock defibrillation are known as defibrillators, which are capable of performing shock cardioversion, i.e., defibrillation. When a patient suffers from severe tachyarrhythmia, such as atrial flutter, atrial fibrillation, supraventricular or ventricular tachycardia, etc., different levels of hemodynamic failure are often caused. Especially when the patient has ventricular flutter, the cardiac ejection and blood circulation are stopped due to the fact that the ventricles have no whole contractility, and if the patient is not rescued in time, the patient often dies due to the fact that the brain is lack of oxygen for a long time. If the defibrillator is adopted, the current with certain energy is controlled to pass through the heart, certain rhythm disorder can be eliminated, and the heart rhythm can be recovered to be normal, so that the patient with the heart disease can be rescued and treated.

The defibrillator is applicable to symptoms:

(1) Ventricular fibrillation (ventricular fibrillation) is the best indication of electrical cardioversion.

(2) Chronic atrial fibrillation (the history of atrial fibrillation is within 1 to 2 years) continues for atrial flutter.

(3) Paroxysmal supraventricular tachycardia, those with obvious hemodynamic dysfunction or pre-excitation syndrome complicated by supraventricular tachycardia and with difficulty in medication, without effective conventional treatment.

(4) Is shown as 1:1 conductive atrial flutter.

Aiming at the principle and the method for acquiring the human body signals by the medical instrument, the human body signal simulation device is provided. The device can simulate and generate various physiological signals of a human body, including an electrocardiowave, a heart rate, a respiratory wave, a respiratory rate, body temperature, blood oxygen saturation, a pulse rate, non-invasive blood pressure (systolic pressure, diastolic pressure and average pressure), pulse, invasive blood pressure (arterial blood pressure, central venous pressure and pulmonary artery pressure), and is suitable for the electrocardio of ventricular fibrillation, atrial fibrillation, ventricular velocity and the like in defibrillation operation.

The working principle of the electrocardiosignal simulation module is as follows:

the module has the functions of respectively carrying out digital-to-analog conversion on digitized electrocardiosignals (multi-lead electrocardio waveforms), outputting through multiple paths of DA (digital-to-analog) circuits, carrying out signal attenuation on each path of DA circuits to meet the amplitude requirement of signal acquisition of electrocardio equipment, outputting signals of 0.2mV-4mV to be provided for the electrocardio medical equipment and carrying out signal acquisition, wherein the digitized electrocardiosignals consist of the following parameter data:

1. the sampling rate (number of acquisitions per second),

2. amplitude value corresponding to the magnitude of the electrocardiosignal

3. Multichannel electrocardiographic waveform data

In order to ensure the most real recovery of the digitized waveform, the module sets a timer period according to the sampling rate, and is used for time control during DA output; through the attenuation circuit and the amplitude selection calculation during DA output, the finally output analog signal meets the amplitude value of the electrocardiosignal; and the multichannel electrocardiographic waveform is restored through the output of the multiple channels of DA channels and corresponding to the electrocardiographic waveform data of the multiple channels respectively.

The working principle of the breathing simulation module is as follows:

the module outputs the digitized respiratory signal through DA to drive a field tube, and simulates the impedance change of a human body through the impedance change of the field tube, so that the module is used for detecting the respiration of medical equipment.

The working principle of the body temperature simulation module is as follows:

the module comprises two parts, one is a temperature detection part, and the other is a temperature heating device; the module is through driving a heating device to through the temperature detection part, gather heating device's temperature value and carry out temperature feedback, thereby produce the change that moderate heat comes simulation human body temperature, provide the temperature sensor collection among the medical equipment.

The invasive blood pressure module has the working principle that:

the module outputs digitized invasive blood pressure signals through a DA (digital-to-analog) circuit, outputs the analog quantity signals of the invasive blood pressure through a signal attenuation circuit, and is directly connected with an invasive blood pressure detection interface (not acquired through a pressure sensor) of medical equipment. Similar to electrocardiographic waveform data, in order to ensure the most real recovery of digitized waveforms, the module sets a timer period according to the sampling rate of the digitized data, is used for time control of DA output, selects calculation according to the attenuation circuit and the multiplying power of the DA output, and finally outputs a signal output reaching the amplitude value of the signal.

The blood oxygen saturation simulation module:

according to the principle of collecting signals of blood oxygen equipment, the module receives the light-emitting driving time sequence from the blood oxygen equipment by a silicon cell photosensitive receiving tube, pulse signals after digitization are modulated, the modulation process is to respectively superpose pulse waves with different amplitudes onto two different wavelengths according to the light-emitting time sequence of the blood oxygen equipment (the process is the process of superposing blood oxygen numerical values), the modulation pulse waves with different blood oxygen saturation numerical values are output and driven to emit light LEDs through DA (digital-to-analog) to carry out optical signal output, and the optical signals (superposed blood oxygen numerical values) of the module are provided for the blood oxygen collection equipment to be collected.

And setting a timer period according to the sampling rate of the digitized pulse waveform for controlling the time of DA output.

The noninvasive blood pressure simulation module:

the module consists of an air pressure acquisition circuit, an air pressure oscillation acquisition circuit, a stepping motor control circuit and a related main control CPU, and determines systolic pressure, diastolic pressure and pressure equalization according to a certain algorithm according to the non-invasive blood pressure measurement principle and the vibration amplitude combination of pulse waves when different air pressures are measured. According to the principle, when different air pressures exist, the module is used for simulating the pulse vibration amplitude by controlling the stepping motor to generate air pressure changes with different amplitudes on the air path. In the process of measuring the blood pressure by the medical equipment, the module controls the stepping motor through the control circuit, and in the whole air path, the module simulates the pulse vibration of a human body under different pressures according to the principle of blood pressure measurement and provides the pulse vibration for the medical equipment to acquire blood pressure signals. After receiving the control command of the upper computer, the module carries out different blood pressure numerical simulation according to control during working.

Defibrillation electrocardio simulation module:

the module consists of two parts, wherein one part is a defibrillation signal acquisition part, the other part is a electrocardiosignal simulation part, the defibrillation signal acquisition part firstly performs voltage division and rectification on a defibrillation signal, then attenuates the signal, analyzes the signal through a voltage comparator, and triggers the level change of the comparator after the defibrillation signal appears. Triggering CPU interruption; the electrocardiosignal simulation part restores abnormal electrocardiosignals (ventricular velocity, ventricular fibrillation, atrial fibrillation and the like) collected from a human body, the abnormal electrocardiosignals are provided for a defibrillator to be collected through a defibrillation electrode plate, the defibrillator carries out defibrillation shock treatment if the defibrillator needs to carry out electric shock defibrillation after detecting the abnormal electrocardiosignals, and the module restores the abnormal electrocardiosignals into normal electrocardiosignals after receiving and detecting the defibrillation shock signals, thereby completing the defibrillation shock process.

The main control board of the product controls the modules to work cooperatively, so that a complete multi-parameter vital sign signal simulation system is formed, collected human body electrocardiosignals, particularly various abnormal electrocardio waveforms (such as ventricular premature, ventricular tachycardia, ventricular fibrillation, bigeminal rhythm and triple rhythm) and other waveforms are digitally stored through electrocardio collection equipment (an electrocardiograph or holter and other equipment), data of the collected human body electrocardio signals are downloaded to the main control board through computer software, and the digitized electrocardio waveforms can be restored into analog signals through the electrocardio simulation module part by the main control board and are provided for the electrocardio collection equipment to be collected.

The clinical treatment method comprises the following steps:

the electrocardiogram of ventricular fibrillation is identified, the first-aid treatment of ventricular fibrillation is mastered, and the defibrillation technology is mastered.

One patient, because of 'chest pain three days', diagnoses that the CCU is caught by acute extensive anterior myocardial infarction, the two eyes of the patient turn upwards suddenly, the patient has no response to breathing, and the electrocardiogram is measured immediately; the clinical manifestations are pale or bluish purple complexion, loss of consciousness, convulsion of the whole body, ass syndrome, sudden cessation of respiratory cycle, disappearance of P and QRS complexes of electrocardiogram, ST segment and T wave, and replacement with fine tremor wave with extremely irregular waveform, amplitude and frequency, and the frequency reaches 250bpm-500bpm.

The main control module immediately performs electric shock defibrillation: the unidirectional wave 360J, the biphasic wave 200J, immediately undergoes 5 CPR cycles, assesses the rhythm, and defibrillates again if necessary.

The invention can simulate the clinical performance of ventricular fibrillation by downloading normal electrocardio waveforms and ventricular fibrillation waveforms to an electrocardio simulation module, according to the whole link of the clinical performance, firstly simulating normal electrocardio waveforms and respiration modules to simulate normal respiration by the electrocardio module, and after a certain time (1 minute or longer), suddenly outputting the clinical performance of ventricular fibrillation, namely simulating the electrocardio waveforms of ventricular fibrillation by the electrocardio module, and simultaneously simulating respiratory arrest (respiratory arrest) by the respiration simulation module, and detecting by an instrument of a multi-parameter monitor, so that symptoms of ventricular fibrillation (without heartbeat and respiration, electrocardio monitoring shows ventricular fibrillation) can be found out.

Claims (9)

1. The utility model provides a human vital sign multi-parameter synchronization analogue means, includes power, main control board, bluetooth interactive device, wiFi interactive device, wired transmission device, data exchanger, its characterized in that: the device is characterized by further comprising a main control processor, an electrocardio simulation device, a breathing simulation device, a body temperature simulation device, a blood pressure signal simulation device, an oxyhemoglobin saturation simulation device and a defibrillator electrocardio signal simulation device, wherein the main control board is provided with a data exchange port and is connected to the simulation devices through the data exchange port.

2. The human body vital sign multi-parameter synchronous simulation device according to claim 1, wherein: the main control processor comprises a main control single chip microcomputer, a key circuit for controlling each device, a flash memory chip, a communication interface, a touch screen input interface, a TFT screen input interface and a power conversion device, wherein the communication interface is connected with each device through a control line, the key circuit comprises nine parallel keys, the input voltage of the key circuit is 3.3V, the key circuit shares a grounding end, pins 4 and 30 of the main control single chip microcomputer are connected with a restarting power circuit, pins 2, 5, 10, 16, 20, 34, 46 and 47 are connected with a key circuit signal input end, the pin 46 is grounded, the pins 22 to 27 are connected with keys, and the pins 11, 21, 35 and 36 are grounded.

3. The human body vital sign multi-parameter synchronous simulation device according to claim 1, wherein: the electrocardio-analog device comprises a lead device which can be connected to a specific part of a human body, a signal input and attenuation circuit, a signal amplifier which is connected to the lead device through a data line, and a control line which is connected with the signal amplifier and a main control processor, wherein the lead device comprises a lead and an electrode plate, and the electrode plate is made of silver or silver chloride.

4. The human body vital sign multi-parameter synchronous simulation device according to claim 1 or 3, wherein: the lead devices are twelve in number, namely standard leads (I, II and III), unipolar compression limb leads (aVR, aVL and aVF) and unipolar chest leads (V1, V2, V3, V4, V5 and V6).

5. The human body vital sign multi-parameter synchronous simulation device according to claim 1, wherein: the respiration simulation device consists of a high-impedance resistor and a PNP type triode, and is connected to the main control processor through a control line.

6. The human body vital sign multi-parameter synchronous simulation device according to claim 1, wherein: the body temperature simulator consists of a thermistor, a rectifying and filtering circuit, a signal amplifier and a control line, wherein the signal amplifier comprises an electric signal amplifying device, an AD (analog-to-digital) and a digital signal converting device.

7. The human body vital sign multi-parameter synchronous simulation device according to claim 1, wherein: blood pressure signal analogue means including invasive blood pressure analogue means and noninvasive blood pressure analogue means, invasive blood pressure analogue means include puncture pipe, pressure sensor, pressure wave signal converter and control line, noninvasive blood pressure analogue means include air pocket and the shared pressure sensor of invasive blood pressure analogue means, shock ripples signal amplifier, ripples signal converter and control line, pressure sensor 2, 4, 5 number pins be the input, 1, 3 number pins are signal output part. No. 6 is connected to ground.

8. The human body vital sign multi-parameter synchronous simulation device according to claim 1, wherein: the oxyhemoglobin saturation simulation device comprises an infrared light-emitting driving device, a waveform generating device and a signal conversion device, wherein the infrared light-emitting driving device comprises an infrared LED and a rheostat connected between the infrared LED and a grounding end, the defibrillator electrocardiosignal simulation device comprises a defibrillation quantity release detection circuit, a defibrillator and an ECG signal output circuit, the blood pressure signal simulation device comprises a pulse monitoring device, the oxyhemoglobin saturation simulation device comprises a pulse rate monitoring device, the electrocardio simulation device, a respiration simulation device, a body temperature simulation device, a blood pressure signal simulation device, an oxyhemoglobin saturation simulation device and the defibrillator electrocardiosignal simulation device are all provided with independent control single-chip microcomputers, and all the control single-chip microcomputers are connected with a main control processor.

9. The human body vital sign multi-parameter synchronous simulation device according to claim 8, wherein: the control singlechip 1, 12, 31, 47 and 63 pins of the electrocardio simulation device are grounded, the 64 pin is connected with a 3.3V power supply, the 14, 15, 16, 17, 22, 23, 26, 27, 58, 59, 61 and 62 pins are connected with a signal input and attenuation circuit, a protective resistor is connected behind the connecting end of the signal input and attenuation circuit, the attenuation resistor is connected on a main circuit of the protective resistor, a filter capacitor is connected on a branch circuit, the filter capacitor is grounded, the attenuation resistor is connected with a grounding terminal piece and a high-impedance resistor, more than 1 group of the signal input and attenuation circuit is provided, the control singlechip 14, 15, 16 and 17 pins of the blood pressure signal simulation device are connected with the power supply, the 1 pin is connected with a pulse waveform acquisition end of a pressure sensor, and the 2 pin is connected with a static pressure acquisition end of the pressure sensor, the pins 2, 4 and 5 of the pressure sensor are input ends and are connected with a signal amplifier, the pins 1 and 3 are output ends and are directly connected with the signal amplifier and are input to a static pressure acquisition end together, wherein the main circuit of the pin 1 is connected with five signal amplifiers, the tail end of the main circuit is connected with a pulse waveform acquisition end, the pins 13, 19, 32, 48 and 64 of the control singlechip of the blood oxygen saturation simulation device are connected with a 3.3V power supply, pins 12 and 60 are grounded, pins 24 and 25 are connected with a waveform generating device, pin 15 is connected with a signal conversion device, two signal amplifiers are connected on a main circuit of the waveform generating device, pins 10, 14, 15, 16, 17 and 37 of a control singlechip of the defibrillator electrocardiosignal analog device are connected with a 3.3V power supply, pins 4, 5 and 7 are connected with an ECG signal output circuit, and pin 20 is connected with a defibrillation quantity release detection circuit.

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