Electrical stimulation circuit and external diaphragm pacemaker

Abstract

The utility model provides an electrical stimulation circuit and an external diaphragm pacemaker. The electrical stimulation circuit comprises a master control circuit; the shuttle flying circuit is connected with the main control circuit; the shuttle flying circuit comprises a gear knob, and the gear knob is used for providing a user with an electrical stimulation adjusting gear; the shuttle flying circuit outputs a first voltage corresponding to the electrical stimulation gear to the main control circuit when the gear knob rotates; the manual control signal circuit is connected with the main control circuit; the manual control signal circuit comprises a feedback key, and the feedback key is used for being pressed down by a user when the user perceives the optimal electrical stimulation; the manual control signal circuit outputs a second voltage corresponding to the optimal electrical stimulation to the main control circuit when the feedback key is pressed down; and the amplifying circuit is connected with the main control circuit and used for amplifying the voltage signal to output a target waveform, and the voltage signal is output by the main control circuit according to the first voltage or the second voltage. The external diaphragm pacemaker provided by the utility model is simple to operate, and can accurately and quickly output a self-adaptive stimulation scheme of a patient, thereby avoiding man-machine confrontation.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic circuit technical field especially, it relates to a kind of electric stimulation circuit and extracorporeal diaphragm pacemaker. BACKGROUND

[0002] Extracorporeal diaphragm pacemaker is an advanced auxiliary treatment equipment for recovering lung function. Just like cardiac pacemaker for patients with heart function related diseases, diaphragm pacemaker also plays a crucial role for patients with respiratory and sputum dysfunction, so it is not only suitable for patients with respiratory dysfunction caused by stroke, but also suitable for patients with high paraplegia, chronic obstructive pulmonary disease and the like.

[0003] But the use of current extracorporeal diaphragm pacemaker is more complex, medical personnel need to manually record the respiratory rate of each patient before use, manually set the stimulation parameters of extracorporeal diaphragm pacemaker according to the respiratory rate, and then output the most appropriate electric stimulation scheme to the patient to avoid man-machine confrontation. Due to the differences in physiological conditions and disease characteristics of different patients, the parameters need to be adjusted according to the specific conditions of the patients when manually input, which increases the operation complexity; and the manual input of parameters is largely dependent on the experience and technology of the operator, and the adjustment of stimulation intensity may not be accurate when manually inputting parameters, it is difficult to achieve the maximum degree of patient tolerance, thereby affecting the treatment effect. UTILITY MODEL CONTENT

[0004] The utility model embodiment provides a kind of electric stimulation circuit and extracorporeal diaphragm pacemaker to solve the problems of related technologies, technical scheme is as follows:

[0005] Firstly, the utility model embodiment provides a kind of electric stimulation circuit, comprising:

[0006] Main control circuit;

[0007] Shuttle circuit, connected with main control circuit;Shuttle circuit includes gear knob, gear knob is used to provide to user adjustment electric stimulation gear;Shuttle circuit is rotated to main control circuit and exports the first voltage corresponding to electric stimulation gear when gear knob;

[0008] Hand control signal circuit, connected with main control circuit;Hand control signal circuit includes feedback button, feedback button is used to provide to user press down when its perception best electric stimulation;Hand control signal circuit exports the second voltage corresponding to best electric stimulation to main control circuit when feedback button is pressed down;

[0009] Amplification circuit, connected with main control circuit, for amplifying voltage signal to output target waveform, voltage signal is exported by main control circuit according to the first voltage or the second voltage.

[0010] In an embodiment, the shuttle circuit further comprises a rotary encoder, the rotary encoder being movably connected with the gear knob, and the rotary encoder being connected with the main control circuit; the rotary encoder is configured to rotate synchronously with the gear knob and output an encoder signal to the main control circuit when the gear knob rotates, and the encoder signal is configured to determine the electric stimulation gear of the gear knob.

[0011] In an embodiment, the shuttle circuit further comprises:

[0012] a digital-to-analog conversion circuit, the main control circuit being connected with the amplification circuit through the digital-to-analog conversion circuit, and the digital-to-analog conversion circuit being configured to convert the voltage signal into an analog signal.

[0013] In an embodiment, the amplification circuit comprises:

[0014] a signal amplification circuit, the signal amplification circuit being connected with the digital-to-analog conversion circuit, and the signal amplification circuit being configured to amplify the analog signal to output an amplitude modulation signal;

[0015] a boost circuit, the boost circuit being connected with the signal amplification circuit, and the boost circuit being configured to provide a stable voltage for the signal amplification circuit;

[0016] a pulse amplification circuit, the pulse amplification circuit being connected with the signal amplification circuit and the main control circuit, and the pulse amplification circuit being configured to amplify the amplitude modulation signal and a frequency modulation signal to output a target waveform corresponding to a frequency and an amplitude, wherein the frequency modulation signal is output by the main control circuit.

[0017] In an embodiment, the shuttle circuit further comprises:

[0018] a power supply circuit, the power supply circuit being connected with the main control circuit, and the power supply circuit being configured to supply power for the main control circuit.

[0019] In an embodiment, the shuttle circuit further comprises:

[0020] a built-in battery, the built-in battery being connected with the main control circuit, and the built-in battery being configured to supply power for the main control circuit.

[0021] In an embodiment, the shuttle circuit further comprises:

[0022] a battery charging circuit, a power supply end of the battery charging circuit being connected with the power supply circuit, and a charging end of the battery charging circuit being connected with the built-in battery, and the battery charging circuit being configured to transmit the power provided by the power supply circuit to the built-in battery for charging.

[0023] In an embodiment, the shuttle circuit further comprises:

[0024] a serial port screen, the serial port screen being connected with the main control circuit, and the serial port screen being configured to display the electric stimulation gear and display the remaining power of the built-in battery.

[0025] In an embodiment, the shuttle circuit further comprises:

[0026] an audible and light reminder circuit, the audible and light reminder circuit being connected with the main control circuit, and the audible and light reminder circuit being configured to issue an audible and light alarm prompt

[0027] The utility model discloses an extracorporeal diaphragm pacemaker, which comprises:

[0028] The electric stimulation circuit is as described above.

[0029] The electric stimulation probe is connected with the electric stimulation circuit and is used for outputting a current corresponding to a target waveform.

[0030] The above technical solution has at least the following advantages or beneficial effects:

[0031] The utility model discloses having gear knob and feedback button, selects electric stimulation gear through gear knob, and the patient can press feedback button to record the electric stimulation gear that accords with the patient's own under the condition of perceiving the best electric stimulation, so that the main control circuit can output corresponding target waveform according to the second voltage corresponding to the best electric stimulation gear, which is used for stimulating the specified position of the patient, and the purpose of auxiliary treatment is achieved. The utility model discloses extracorporeal diaphragm pacemaker simple operation, and can accurately and quickly output the stimulation scheme of patient self -adaptation, avoids man -machine confrontation.

[0032] The above summary is intended to illustrate the present application and is not intended to be limiting thereof. Further aspects, embodiments and features of the present application will be apparent from the detailed description and the accompanying drawings that follow, by referring to which the above summary is to be interpreted. BRIEF DESCRIPTION OF DRAWINGS

[0033] In the drawings, like reference numerals will be used to designate like or similar elements among the several views and the numerals will be used to designate like or similar elements among the several views. The drawings are not necessarily to scale. It should be understood that these drawings are only schematic and that the illustrations are only intended to provide a generalized understanding of the subject matter.

[0034] Figure 1 The utility model discloses an electric stimulation circuit circuit diagram for the utility model;

[0035] Figure 2 The utility model discloses a main control circuit circuit diagram for the utility model;

[0036] Figure 3 The utility model discloses a hand control signal circuit circuit diagram for the utility model;

[0037] Figure 4 The utility model discloses a digital analog conversion circuit circuit diagram for the utility model;

[0038] Figure 5 The utility model discloses a boost circuit circuit diagram for the utility model;

[0039] Figure 6 The utility model discloses a signal amplification circuit circuit diagram for the utility model;

[0040] Figure 7The utility model pulse amplification circuit's circuit diagram is provided for the utility model;

[0041] Figure 8 The utility model power circuit's circuit diagram is provided for the utility model;

[0042] Figure 9 The utility model battery charging circuit's circuit diagram is provided for the utility model;

[0043] Figure 10 The utility model acousto-optic reminding circuit's circuit diagram is provided for the utility model;

[0044] Figure 11 The utility model serial port screen's interface circuit diagram is provided for the utility model. DETAILED DESCRIPTION

[0045] In the following, only certain exemplary embodiments are simply described. As those skilled in the art can realize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the utility model. Therefore, the drawings and the description are considered to be essentially exemplary rather than limiting.

[0046] Embodiment one

[0047] The embodiment provides an electric stimulation circuit, which can output a user-adaptive electric stimulation scheme, simplifies operation steps, is more suitable for user's own condition, and obviously improves electric stimulation effect.

[0048] As shown in Figure 1 , the electric stimulation circuit mainly comprises a main control circuit, a shuttle circuit, a hand control signal circuit and an amplification circuit.

[0049] Specifically, the main control circuit can be a U5 single-chip microcomputer. As shown in Figure 2 , the main control circuit U5 single-chip microcomputer serves as a control core of the whole machine, controls a digital-analog conversion circuit, a pulse waveform circuit, a charging signal detection, a battery voltage detection, the shuttle circuit, an acousto-optic reminding circuit and communication of a serial port screen.

[0050] The shuttle circuit is connected with the main control circuit. The shuttle circuit comprises a gear knob, which can be a shuttle knob, and provides an electric stimulation gear to a user for adjustment. The user can rotate the gear knob to different electric stimulation gears, and the shuttle circuit outputs a first voltage corresponding to the electric stimulation gear to the main control circuit, so that the main control circuit can identify the current gear information according to the first voltage.

[0051] The shuttle circuit further comprises a rotary encoder, and a coding gear of the rotary encoder is movably connected with a rotating mechanism of the gear knob. When the gear knob rotates, the coding gear can drive the rotary encoder to rotate synchronously. The rotary encoder outputs an encoder signal to the main control circuit through a pin thereof, and the main control circuit can determine the current electric stimulation gear according to the encoder signal output by the rotary encoder.

[0052] And the amplification circuit is connected with the main control circuit, when the main control circuit receives the first voltage, the main control circuit outputs corresponding voltage signal, the voltage signal is amplified by the amplification circuit to output the target waveform corresponding to the current electric stimulation level, so that the user can feel the electric stimulation intensity corresponding to different electric stimulation levels.

[0053] Need to be explained, the gear knob in the shuttle circuit can also be set as the form of button, the user changes the electric stimulation level by pressing the gear button. The above-mentioned shuttle knob and the rotating mechanism of the shuttle knob have been disclosed in the prior art, and the principle and hardware structure thereof will not be limited here.

[0054] The hand control signal circuit of the electric stimulation circuit includes a feedback button, which is used to provide to the user to press when he perceives the electric stimulation. When the user presses the feedback button, the hand control signal circuit outputs corresponding voltage signal to the main control circuit. As Figure 3 shown, Figure 3 The current diagram of the hand control signal circuit. In this embodiment, the user needs to press the feedback button when he perceives the best electric stimulation, and the hand control signal circuit outputs the second voltage corresponding to the best electric stimulation to the main control circuit when the patient perceives the best electric stimulation.

[0055] When the main control circuit receives the second voltage, it records the gear information corresponding to the best electric stimulation, and automatically outputs corresponding voltage signal according to the second voltage corresponding to the best electric stimulation after the next start. The voltage signal is amplified by the amplification circuit and finally outputs the target waveform corresponding to the best electric stimulation, reducing the user's trouble of adjusting the gear again next time, improving the accuracy and efficiency of electric stimulation.

[0056] In this embodiment, the electric stimulation circuit further includes a digital-to-analog conversion circuit, the output of the main control circuit is connected with the amplification circuit through the digital-to-analog conversion circuit, the main control circuit communicates with the digital-to-analog conversion circuit through SPI, and the voltage signal output by the main control circuit is converted into an analog signal corresponding to the gear gradient and then amplified by the amplification circuit.

[0057] Specifically, the digital-to-analog conversion circuit is as Figure 4 shown, the SPI interface of the conversion IC U4 of the digital-to-analog conversion circuit communicates with the main control circuit U5 through SPI, when the main control circuit U5 receives the intensity level instruction from the serial screen, the main control circuit U5 controls the conversion IC U4 of the digital-to-analog conversion circuit to output small analog voltage signals of each gear gradient from the resistors R37, R38, R39 and R40 through SPI communication.

[0058] And the amplification circuit in this embodiment includes:

[0059] The signal amplification circuit is connected with the digital-to-analog conversion circuit, and is used for amplifying the analog signal to output an amplitude modulation signal.

[0060] The boost circuit is connected with the signal amplification circuit, and is used for providing a stable voltage for the signal amplification circuit, and ensuring that the signal amplification circuit outputs a stable gear voltage to the pulse amplification circuit.

[0061] The pulse amplification circuit is connected with the signal amplification circuit and the main control circuit, and is used for amplifying the amplitude modulation signal and the frequency modulation signal to output a target waveform with a corresponding frequency and amplitude, wherein the frequency modulation signal is output by the main control circuit, and the main control circuit synchronously outputs a corresponding frequency signal to the pulse amplification circuit for amplification according to the voltage signal of the manual control signal circuit.

[0062] Specifically, the boost circuit is as shown in Figure 5 The voltage VS of the power supply provided by the built-in battery and the external power supply is processed by the boost IC U3, and then a 5V voltage is provided to the digital-to-analog conversion circuit and the main control circuit at the rear end for power supply.

[0063] The signal amplification circuit is as shown in Figure 6 The small analog voltage signal AMP1L output by the digital-to-analog conversion circuit is amplified by the small signal amplification circuit triode D26, and then the analog voltage intensity gear signal CH1LAMP2 drives the second pin of the primary coil T2 of the transformer of the pulse amplification circuit.

[0064] The pulse amplification circuit is as shown in Figure 7 The frequency signal CH1LRFREQ output by the IO port of the main control circuit drives the transformer T2 of the pulse amplification circuit through the Darlington amplification circuit composed of the capacitor C11, the resistor R23, the diodes D21 and D22 to form an oscillation waveform, and the secondary 4th and 6th pins of the transformer T2 output a treatment pulse signal. When the pulse output terminal G1 is externally connected to a load, the pulse voltage of the transformer T2 passes through the 4th pin of the transformer T2, the resistor R17, the 1st pin of the terminal G1, the external load, the 3rd pin of the terminal G1, the 3rd and 1st pins of the transformer T1 to the 6th and 4th pins of the transformer T2 to form a current loop. When current flows through this current loop, the 6th pin of the transformer T1 outputs a voltage signal, which is rectified and filtered by the diode D1 and the capacitor C1 to obtain an analog voltage signal ADCH1 for detection by the single-chip microcomputer. After the main control circuit detects this high-level voltage signal, it is determined that the electrode sheet is connected to the human skin to form a normal load loop. If the electrode sheet is not connected to the human skin to form a load loop, the 6th pin of the transformer T1 outputs a low voltage signal, and at this time, ADCH1 is a low-level signal. After the main control circuit identifies this low-level signal, it is determined that the electrode sheet load is open, at which time the main control circuit closes the system and sends a command to the serial port screen to prompt a pop-up window.

[0065] The electric stimulation circuit of the embodiment also comprises a power supply circuit connected to an external power supply, which is connected to the main control circuit and used to supply power to the main control circuit. Meanwhile, the embodiment can also be provided with a built-in battery, which can be a lead-acid battery, connected to the main control circuit and also used to supply power to the main control circuit.

[0066] Specifically, as shown in Figure 8 the external 15V / 3A power supply adapter is connected, it will provide a VDD voltage of 15V to supply power to the main control circuit, and the VDD provides a VS voltage to the subsequent circuit through the diode D8. At the same time, the VDD voltage passes through the R14 to close the MOS tube Q3, thereby blocking the lead-acid battery from supplying power to the system. That is, when the power adapter supplies power, the voltage of the lead-acid battery is not consumed. After the whole machine battery switch is turned on, if the external power adapter is not connected to the device, the mos tube Q3 gate is pulled down to ground through the R14, R2, R3 network, thereby opening the mos tube Q3, at this time the lead-acid battery voltage provides a voltage VS to the subsequent circuit through Q3, D10. VS is reduced through IC U1 to supply power to the serial port screen.

[0067] In the embodiment, a battery charging circuit is also provided between the power supply circuit and the built-in battery, with its power supply end connected to the power supply circuit and its charging end connected to the built-in battery, used to transmit the power provided by the power supply circuit to the built-in battery for charging. So that the power supply circuit can supply power to the main control circuit, and also can charge the internal lead-acid battery through the internal battery charging circuit, while closing the discharge of the internal lead-acid battery to avoid the battery being in a floating state, and the charging is more stable. When the external power supply is removed, the built-in battery can also output voltage to the main control circuit in time, without affecting the normal work of the main control circuit. The serial port screen display connected to the main control circuit will not have any jitter.

[0068] Specifically, as shown in Figure 9 the external power supply adapter connected to the device provides a charging voltage VDD, which is provided to the lead-acid battery through the relay JDQ1, MOS tube Q2, diode D6, inductor L1, and resistor Rsen1. The charging IC U2 adjusts the charging current of Q2 in real time by sampling the voltage feedback of Rsen1, realizing 3-stage charging management of the lead-acid battery. When the lead-acid battery is fully charged, the 2nd pin CHRG# of the charging IC U2 is inverted from low voltage to high impedance state. At this time, the CHGSIG of the anode of the diode D19 is inverted from low level to high level to provide a full charge feedback signal to the main control circuit. After receiving the instruction, the main control circuit closes the relay JDQ1 to avoid overcharging the built-in battery.

[0069] The main control circuit collects the voltage AD value of the internal battery in real time. When the external power supply is connected to the main control circuit and charges the internal battery, the main control circuit refreshes the power in real time and outputs the latest power to the serial port screen for display.

[0070] When the internal battery is fully charged, the main control circuit controls the relay of the battery charging circuit to disconnect the input of the charging voltage to avoid overcharging. When the battery is discharged to below 95%, if the external power supply is still connected, the main control circuit will re-energize the relay to connect the external power supply to charge the internal battery. If the internal battery is discharged to below 95% and the external power supply is not connected, the internal battery refreshes the power according to the normal discharge process. When the power is in the alarm power interval, if the external power supply is connected for charging within a preset time (for example, within five minutes), the alarm state is cleared and the charging process is entered. If there is no external power supply connected to charge the internal battery, the device will shut down after five minutes.

[0071] The alarm state can be completed by the sound and light reminding circuit connected to the main control circuit. The sound and light reminding circuit sends out sound and light alarm prompts when the main control circuit enters the alarm state. The sound and light alarm prompts can be the lighting of LED lights, and the mainboard buzzer will be accompanied by a buzzer sound. When the alarm state is canceled, the light is turned off and the buzzer sound is turned off. In addition, when the target waveform corresponding to the current output by the electrical stimulation circuit stimulates the user, the corresponding sound and light reminders can also be sent out to inform the user whether the electrical stimulation circuit has normal output.

[0072] Specifically, the sound and light reminding circuit is as shown in Figure 10 When the system is normally working, the main control circuit lowers the CH1LLED and CH1RLED of the sound and light reminding circuit to light the output channel indicator lights D29 and D30. At the same time, the main control circuit drives the BP signal of the sound and light reminding circuit to be high first and then low, so that the buzzer BP1 beeps.

[0073] The serial port screen can also be used to display the electrical stimulation gear. The main control circuit collects the voltage and current of the shuttle circuit and the hand control signal circuit in real time. The main control circuit determines the gear information of the shuttle rotation by recognizing the forward or reverse rotation of the gear, and refreshes the gear information to the serial port screen through the serial port. In addition, the serial port screen can also be used by the user to input treatment parameters through the upper computer interface, such as the user can set the frequency, intensity, pacing times, pacing mode, learning and memory, and treatment function instructions through the serial port screen, and send them to the main control circuit through serial communication. The main control circuit controls the digital-to-analog conversion circuit, the pulse waveform circuit, and the sound and light reminding circuit according to the received serial port instructions to perform corresponding operations.

[0074] Specifically, the interface circuit of the serial port screen is as shown in Figure 11As shown, the main control circuit communicates with the serial screen through J1 terminal signal DTX, DTX, so as to respond to the intensity, frequency and other gear information sent by the serial screen. At the same time, the main control circuit sends relevant instructions to refresh the page animation information displayed on the serial screen.

[0075] Embodiment two

[0076] The embodiment provides an external diaphragm pacemaker, which comprises:

[0077] The electric stimulation circuit is as described above.

[0078] The electric stimulation probe is connected with the electric stimulation circuit and is used for outputting a current corresponding to a target waveform.

[0079] The operation steps of the external diaphragm pacemaker are as follows:

[0080] Step 1: Stimulate the diaphragm of the patient by outputting a single group of pulses, and confirm the most suitable intensity gear that the patient can tolerate.

[0081] The operation steps are as follows:

[0082] After the patient or the doctor clicks the serial screen to enter the learning and memory page and sets the intensity gear parameters on the screen, the device outputs a group of envelope electric pulses to stimulate the diaphragm of the patient once by pressing the hand control button. If the patient feedbacks that the treatment intensity is not suitable, the intensity gear knob on the device is adjusted to be larger or smaller, and then the hand control button is pressed again to output a group of envelope electric pulses to stimulate the diaphragm of the patient until the patient confirms the most suitable intensity gear. When the optimal electric stimulation gear is determined, the patient presses the feedback button, so that the optimal electric stimulation gear corresponding to the current patient is recorded.

[0083] It should be noted that the hand control button and the feedback button can be different buttons or the same button. When the hand control button and the feedback button are the same physical button, the serial screen can be used to select whether the current stimulation gear is the optimal electric stimulation gear.

[0084] Step 2: Start the self-learning and memory process of human-computer interaction. Under the setting of the optimal treatment intensity gear matched in step 1, the device learns the frequency of the patient's breathing, and the machine automatically calculates the frequency of the patient's breathing (i.e., the pacing frequency), so that the device enters the automatic mode and outputs envelope electric pulses according to the intensity and the pacing frequency obtained by learning and memory.

[0085] The operation steps are as follows:

[0086] Click the serial port screen learning function button to enter the learning function page. On the basis of matching the intensity of the best electrical stimulation level in the first step, the patient presses the hand control button at the beginning of each inspiration. The device will output a set of envelope electrical pulse to stimulate the diaphragm to assist inspiration, and the device will detect the hand control button signal from zero to start timing. When the patient exhales, do not operate the hand control button. The single-chip microcomputer on the device main control circuit will count the interval time of the patient's inspiration time1, time2, time3,..., timeN, and also count the number of patient's inspiration 1, 2, 3,..., N and refresh the inspiration interval time timeN and the number N to the serial port screen in real time. When learning N times (N>1), the patient clicks the end learning button on the serial port screen, and the single-chip microcomputer on the device main control board calculates the pacing number, and the calculation formula is as follows:

[0087] Pacing number = (time1+time2+time3+.......timeN) / (N-1), the result of the calculation will generate a pop-up window to report to the serial port screen for the patient or doctor to view. The report shows the results of the patient's self-learning: 1. The most suitable treatment intensity level; 2. The pacing number of breathing inspiration. After the patient or doctor clicks the OK button on the report pop-up window, the treatment intensity and pacing number data displayed by the pop-up window will be imported into the automatic mode treatment page. At this time, click the start treatment on the serial port screen, and the device will automatically send the envelope electrical pulse of the intensity level matched by the patient according to the pacing number rhythm to treat the patient, so that the device can automatically treat the patient according to the most suitable intensity level of the envelope electrical pulse in the next use.

[0088] The device meets the functions of existing diaphragmatic pacemaker products on the market, and adds a learning function. The machine learns to record the patient's pacing number, intensity, and import it into the treatment parameter setting. At the same time, it provides personalized parameter setting for adaptive parameter matching, outputs the patient's adaptive diaphragmatic treatment plan, and avoids man-machine confrontation. At the same time, it provides personalized frequency, pulse width, treatment countdown setting, sound and light reminder and dynamic display screen output display function, bringing a different high-tech experience.

[0089] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without contradiction.

[0090] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0091] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of various changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An electrical stimulation circuit, characterized by, include: Main control circuit; A shuttle circuit is connected to the main control circuit; the shuttle circuit includes a gear knob, which is used to provide the user with an adjustment of the electrical stimulation level; when the gear knob is rotated, the shuttle circuit outputs a first voltage corresponding to the electrical stimulation level to the main control circuit; A hand-controlled signal circuit is connected to the main control circuit; the hand-controlled signal circuit includes a feedback button, which is provided to the user when the user perceives optimal electrical stimulation; when the feedback button is pressed, the hand-controlled signal circuit outputs a second voltage corresponding to the optimal electrical stimulation to the main control circuit; An amplifier circuit, connected to the main control circuit, is used to amplify the voltage signal to output a target waveform. The voltage signal is output by the main control circuit based on the first voltage or the second voltage.

2. The electrical stimulation circuit of claim 1, wherein, The shuttle circuit also includes a rotary encoder, which is movably connected to the gear knob and connected to the main control circuit. The rotary encoder is used to rotate synchronously when the gear knob is rotated and output an encoder signal to the main control circuit. The encoder signal is used to determine the electrical stimulation level of the gear knob.

3. The electrical stimulation circuit of claim 1, wherein, Also includes: A digital-to-analog converter circuit is provided, wherein the main control circuit is connected to the amplifier circuit via the digital-to-analog converter circuit, and is used to convert the voltage signal into an analog signal.

4. The electrical stimulation circuit of claim 3, wherein, The amplifier circuit includes: A signal amplification circuit, connected to the digital-to-analog converter circuit, is used to amplify the analog signal to output a corresponding amplitude modulation signal; A boost circuit, connected to the signal amplification circuit, is used to provide a stable voltage to the signal amplification circuit; A pulse amplifier circuit, connected to the signal amplifier circuit and the main control circuit, is used to amplify the amplitude modulation signal and the frequency modulation signal to output the target waveform with corresponding frequency and amplitude, wherein the frequency modulation signal is output by the main control circuit.

5. The electrical stimulation circuit of claim 1, wherein, Also includes: A power supply circuit, connected to the main control circuit, is used to supply power to the main control circuit.

6. The electrical stimulation circuit of claim 5, wherein, Also includes: A built-in battery is connected to the main control circuit to supply power to the main control circuit.

7. The electrical stimulation circuit of claim 6, wherein, Also includes: A battery charging circuit, whose power supply terminal is connected to the power supply circuit and whose charging terminal is connected to the built-in battery, is used to transfer the electrical energy provided by the power supply circuit to the built-in battery for charging.

8. The electrical stimulation circuit of claim 7, wherein, Also includes: The serial port screen, connected to the main control circuit, is used to display the electrical stimulation level and the remaining power of the built-in battery.

9. The electrical stimulation circuit of claim 1, wherein, Also includes: The sound and light alarm circuit is connected to the main control circuit and is used to issue sound and light alarm prompts.

10. An extracorporeal diaphragm pacemaker, characterized by include: The electrical stimulation circuit as described in any one of claims 1 to 9; An electrical stimulation probe, connected to the electrical stimulation circuit, is used to output a current corresponding to the target waveform.

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