Respiratory nerve muscle stimulator with evaluation function
By designing a respiratory neuromuscular stimulator with evaluation function, using triangular wave and square wave signals to stimulate and evaluate the diaphragmatic nerves, the problem of lack of objective evaluation and real-time adjustment in traditional methods is solved, and more efficient and accurate treatment of diaphragmatic nerve injury is achieved.
Patent Information
- Application Number
- CN202411906172.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-02-11
AI Technical Summary
The traditional diaphragmatic nerve injury assessment and treatment methods lack objective and quantitative evaluation indicators, which leads to uncertainty in the formulation of treatment plans and the inability to monitor the patient's neuromuscular response in real time, affecting the treatment effect.
A respiratory neuromuscular stimulator with evaluation function is designed, including a first stimulation module, a second stimulation module, a signal feedback module and a main control module. The instrument stimulates the human body by generating triangular and square wave signals, collects feedback signals, and intelligently adjusts the intensity and frequency of the electrical stimulation signal based on the feedback data.
The accurate assessment of the degree of diaphragmatic nerve damage is achieved, providing an important basis for formulating treatment plans, and through real-time adjustment of stimulation parameters, the accuracy and effectiveness of treatment are improved, and the quality of life and rehabilitation process of patients are improved.
Smart Images
Figure CN119405991A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of medical devices, and in particular to a respiratory nerve muscle stimulator with an evaluation function. Background Art
[0002] In the field of medical rehabilitation, the evaluation and treatment of diaphragmatic nerve injury has always been a clinical difficulty. Traditional evaluation methods often rely on the doctor's experience and the patient's subjective feelings, lacking objective and quantitative evaluation indicators, resulting in uncertainty in the formulation of treatment plans. At the same time, during the treatment process, due to the inability to monitor the patient's neuromuscular response in real time, it is difficult for doctors to accurately adjust the stimulation parameters, thus affecting the treatment effect. Summary of the invention
[0003] The disclosed embodiment provides a respiratory nerve muscle stimulator with an evaluation function to improve the treatment effect on diaphragmatic nerve injury.
[0004] The embodiment of the present disclosure provides a respiratory nerve muscle stimulator with an evaluation function, comprising: A first stimulation module, a second stimulation module, a signal feedback module and a main control module; The first stimulation module, the second stimulation module and the signal feedback module are all connected to the main control module; The first stimulation module is used to generate a triangular wave signal and a square wave signal, and the triangular wave signal and the square wave signal are used to stimulate the human body; The signal feedback module is used to collect feedback signals after the triangular wave signal and the square wave signal stimulate the human body; The main control module is used to send a control instruction to the second stimulation module according to the feedback signal after the triangular wave signal and the square wave signal stimulate the human body; The second stimulation module is used to generate an electrical stimulation signal.
[0005] In an exemplary embodiment of the present disclosure, the first stimulation module includes: an oscillation circuit, a waveform generation circuit, and a control circuit; The output end of the oscillation circuit is connected to the input end of the waveform generating circuit, the first output end of the waveform generating circuit is connected to the first end of the control circuit, the second output end of the waveform generating circuit is connected to the second end of the control circuit, and the third end of the control circuit is used to output a triangular wave signal or a square wave signal.
[0006] In an exemplary embodiment of the present disclosure, the oscillation circuit includes: a controller U1, a switch K3, a resistor R4, and a capacitor C1; The power supply end of the controller U1 is connected to the first end of the switch K3, the second end of the switch K3 is connected to the VCC power supply, the high trigger end of the controller U1 is connected to the low trigger end of the controller U1, the output end of the controller U1 is connected to the low trigger end of the controller U1 through the resistor R4, and the control end of the controller U1 is grounded through the capacitor C1.
[0007] In an exemplary embodiment of the present disclosure, the waveform generating circuit includes: an operational amplifier U3, a resistor R5, a variable resistor RP1, a capacitor C7, an operational amplifier U2, a variable resistor RP2 and a variable resistor RP3, the inverting input terminal of the operational amplifier U3 is connected to the output terminal of the controller U1, the non-inverting input terminal of the operational amplifier U3 is connected to the control terminal of the controller U1, the output terminal of the operational amplifier U3 is connected to the sliding terminal of the variable resistor RP2 through the resistor R5, and the output terminal of the operational amplifier U3 is connected to the inverting input terminal of the operational amplifier U2 through the variable resistor RP1; The non-inverting input terminal of the operational amplifier U2 is connected to the sliding terminal of the variable resistor RP3, the first terminal of the variable resistor RP3 is connected to the first terminal of the switch K3, the second terminal of the variable resistor RP3 is grounded, the output terminal of the operational amplifier U2 is connected to the inverting input terminal of the operational amplifier U2 through the capacitor C7, the output terminal of the operational amplifier U2 is connected to the first terminal of the variable resistor RP2, and the second terminal of the variable resistor RP2 is connected to the low trigger terminal of the controller U1; The output end of the operational amplifier U3 serves as the first output end of the waveform generating circuit, and the output end of the operational amplifier U2 serves as the second output end of the waveform generating circuit.
[0008] In an exemplary embodiment of the present disclosure, the control circuit includes: a switch K1 and a relay K2; A first end of the switch K1 is connected to a first end of the switch K3, a second end of the switch K1 is connected to a first input end of the relay K2, and a second input end of the relay K2 is grounded; The normally open end of the relay K2 is connected to the first output end of the waveform generating circuit, the normally closed end of the relay K2 is connected to the second output end of the waveform generating circuit, and the common end of the relay K2 is used to output a triangular wave signal or a square wave signal.
[0009] In an exemplary embodiment of the present disclosure, the second stimulation module includes: a push-pull circuit and an electrical stimulation circuit; The input end of the push-pull circuit is connected to the main control module, the output end of the push-pull circuit is connected to the input end of the electrical stimulation circuit, and the output end of the electrical stimulation circuit is used to generate an electrical stimulation signal.
[0010] In an exemplary embodiment of the present disclosure, the push-pull circuit includes: a switch tube Q1, a switch tube Q2 and a transformer T2; The control end of the switch tube Q1 is connected to the main control module, the first end of the switch tube Q1 is connected to the first input end of the transformer T2, and the second end of the switch tube Q1 is grounded; The second input terminal of the transformer T2 is connected to the third input terminal of the transformer T2, and the third input terminal of the transformer T2 is connected to the VCC power supply; The control end of the switch tube Q2 is connected to the main control module, the first end of the switch tube Q2 is connected to the fourth input end of the transformer T2, and the second end of the switch tube Q2 is grounded; A first output terminal of the transformer T2 is connected to an input terminal of the electrical stimulation circuit, and a second output terminal of the transformer T2 is grounded.
[0011] In an exemplary embodiment of the present disclosure, the electrical stimulation circuit includes: a variable resistor RP4, a resistor R3, a thyristor Q3 and a transformer T1; The first end of the variable resistor RP4 is connected to the output end of the push-pull circuit, the second end of the variable resistor RP4 is grounded, the sliding end of the variable resistor RP4 is connected to the control electrode of the thyristor Q3 through the resistor R3, the first end of the variable resistor RP4 is connected to the first input end of the transformer T1, the second input end of the transformer T1 is connected to the anode of the thyristor Q3, the cathode of the thyristor Q3 is grounded, the first output end of the transformer T1 is used to generate an electrical stimulation signal, and the second output end of the transformer T1 is grounded.
[0012] In an exemplary embodiment of the present disclosure, the electrical stimulation circuit further includes: a transistor Q4; The base of the transistor Q4 is connected to the sliding end of the resistor RP4, the emitter of the transistor Q4 is connected to the first end of the resistor RP4, and the collector of the transistor Q4 is connected to the first input end of the transformer T1.
[0013] In an exemplary embodiment of the present disclosure, it further includes: Display module and wireless communication module; The display module is connected to the main control module, and the main control module is connected to the monitoring terminal through the wireless communication module.
[0014] The beneficial effects of a respiratory neuromuscular stimulator with an evaluation function provided by an embodiment of the present disclosure are as follows: through the collaborative work between the first stimulation module, the second stimulation module, the signal feedback module and the main control module, the triangular wave and square wave signals generated by the first stimulation module can stimulate specific parts of the human body in a targeted manner and induce neuromuscular reactions. The signal feedback module promptly collects the feedback signal after stimulation to provide accurate data basis for the main control module. The main control module intelligently sends control instructions to the second stimulation module based on the feedback signal to ensure the accurate output of the electrical stimulation signal. Not only can it accurately evaluate the degree of diaphragmatic nerve damage and provide an important basis for determining the treatment plan, but it can also adjust the stimulation intensity and frequency according to the patient's real-time response to achieve personalized treatment and improve the treatment effect. It helps to improve the patient's quality of life and promote the rehabilitation process. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0016] Figure 1 It is a structural block diagram of a respiratory nerve muscle stimulator with evaluation function provided by an embodiment of the present disclosure; Figure 2 is a structural block diagram of another respiratory nerve muscle stimulator with evaluation function provided by an embodiment of the present disclosure; Figure 3 is a circuit diagram of a first stimulation module provided in an embodiment of the present disclosure; Figure 4 is a circuit diagram of the second stimulation module provided in an embodiment of the present disclosure. DETAILED DESCRIPTION
[0017] In order to enable people in the technical field to better understand the present solution, the technical solution in the embodiment of the present solution will be clearly described below in conjunction with the drawings in the embodiment of the present solution. Obviously, the described embodiment is an embodiment of a part of the present solution, not all of the embodiments. Based on the embodiments in the present solution, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present solution.
[0018] The term "including" and any other variations in the specification and claims of this solution and the above drawings mean "including but not limited to", and is intended to cover non-exclusive inclusions and is not limited to the examples listed in the text. In addition, the terms "first" and "second" are used to distinguish different objects, not to describe a specific order.
[0019] The following is a detailed description of the implementation of the present disclosure in conjunction with the specific drawings: Figure 1 This is a schematic diagram of the structure of a respiratory nerve muscle stimulator with evaluation function provided by an embodiment of the present disclosure. Figure 1The respiratory neuromuscular stimulator with evaluation function comprises: a first stimulation module, a second stimulation module, a signal feedback module and a main control module; the first stimulation module, the second stimulation module and the signal feedback module are all connected to the main control module; the first stimulation module is used to generate a triangular wave signal and a square wave signal, and the triangular wave signal and the square wave signal are used to stimulate the human body; the signal feedback module is used to collect feedback signals after the triangular wave signal and the square wave signal stimulate the human body; the main control module is used to send control instructions to the second stimulation module according to the feedback signals after the triangular wave signal and the square wave signal stimulate the human body; the second stimulation module is used to generate an electrical stimulation signal.
[0020] In this embodiment, the first stimulation module is used to generate a triangular wave signal and a square wave signal. The triangular wave signal has the characteristic of a slow intensity change rate, while the square wave signal has a fast intensity change rate.
[0021] The triangle wave signal and the square wave signal are used to stimulate specific parts of the human body, such as the surface projection area of the phrenic nerve, including the lower 1 / 3 of the lateral edge of the bilateral sternocleidomastoid muscle and the second intercostal space of the bilateral clavicle midline. By stimulating these areas, the human neuromuscular response can be induced.
[0022] When the triangle wave signal and the square wave signal stimulate the human body, the signal feedback module can collect the feedback signals generated by the human body to these two different signal stimuli. These feedback signals contain the response of the human neuromuscular system to the stimulation, such as the degree of muscle contraction, the speed of nerve conduction and other information.
[0023] For example, electromyographic sensors and pressure sensors can be used to collect feedback signals. When human muscles contract under the stimulation of triangular wave signals and square wave signals, the electromyographic sensors can detect the weak electrical signals generated by the muscles and convert them into electrical signals for processing. Pressure sensors can be placed on body parts related to the stimulation site, such as the chest or abdomen. When the muscles contract, a certain pressure change will be generated on the pressure sensor. The pressure sensor converts this pressure change into an electrical signal output to reflect the degree of muscle contraction. The weak signals output by the electromyographic sensor and the pressure sensor are amplified to reach the amplitude required by the subsequent processing circuit. A low-pass filter is used to remove high-frequency noise, and a high-pass filter is used to remove low-frequency interference to improve the quality of the signal. The conditioned analog signal needs to be converted into a digital signal before it can be processed by the main control module. An analog-to-digital converter (ADC) can be used to convert analog signals into digital signals. The ADC samples the input signal according to the set sampling frequency and converts it into a digital output. The converted digital signal is transmitted to the main control module. Data can be transmitted to the main control module through digital interfaces, such as SPI, I2C and other communication protocols. After receiving these feedback signals, the main control module analyzes and processes them to achieve control and adjustment of the respiratory neuromuscular stimulator.
[0024] The main control module receives the feedback signals collected by the signal feedback module, analyzes and processes these feedback signals, and generates corresponding control instructions based on the physiological state and stimulation effects of the human body reflected by the feedback signals.
[0025] For example, if the feedback signal shows that the human body's response to the current stimulation is weak, the main control module can adjust the control instruction to increase the intensity of the electrical stimulation signal output by the second stimulation module.
[0026] The second stimulation module receives the control instruction sent by the main control module and generates an electrical stimulation signal according to the control instruction. The electrical stimulation signal generated by the second stimulation module can further stimulate the respiratory neuromuscular system of the human body to achieve the purpose of regulating respiratory function, treating related diseases or improving respiratory conditions.
[0027] For example, suppose a patient has impaired respiratory function for some reason and the doctor suspects that there may be diaphragmatic nerve damage.
[0028] First, place the electrodes of the respiratory nerve muscle stimulator on the patient's phrenic nerve surface projection area, that is, the lower 1 / 3 of the lateral edge of the bilateral sternocleidomastoid muscle and the second intercostal space of the bilateral clavicle midline.
[0029] After starting the stimulator, the first stimulation module generates a triangle wave signal and a square wave signal, and stimulates the patient in turn. The signal feedback module collects the patient's physiological response signals after these stimuli in real time, such as slight changes in muscle contraction and fluctuations in nerve potential. These feedback signals are transmitted to the main control module, which analyzes them. Assuming that the analysis results show that the patient's response to the current stimulation is weak, the main control module sends a command to the second stimulation module to increase the intensity of the electrical stimulation signal.
[0030] The second stimulation module generates a stronger electrical stimulation signal according to the instruction and acts on the patient's body again. During the whole process, the stimulation parameters are continuously adjusted and the thresholds when the patient is stimulated with square wave and triangle wave current are recorded at the same time.
[0031] After multiple measurements and calculations, the adaptability coefficient is obtained. The adaptability coefficient can be the ratio of the triangle wave signal to the square wave signal. If the adaptability coefficient value deviates significantly from the normal range, the doctor can judge that the patient's diaphragm nerve has a certain degree of damage and formulate a corresponding treatment plan based on this result, such as adjusting the frequency and intensity of the stimulator, or combining it with other treatment methods. In the subsequent treatment process, the adaptability coefficient value can be measured again to evaluate the treatment effect to determine whether the treatment plan needs to be further adjusted.
[0032] It can be concluded from the above that in this embodiment, through the collaborative work between the first stimulation module, the second stimulation module, the signal feedback module and the main control module, the triangular wave and square wave signals generated by the first stimulation module can stimulate specific parts of the human body in a targeted manner and induce neuromuscular reactions. The signal feedback module promptly collects the feedback signal after stimulation to provide accurate data basis for the main control module. The main control module intelligently sends control instructions to the second stimulation module based on the feedback signal to ensure the accurate output of the electrical stimulation signal. Not only can it accurately assess the degree of diaphragmatic nerve damage and provide an important basis for determining the treatment plan, but it can also adjust the stimulation intensity and frequency according to the patient's real-time response to achieve personalized treatment and improve the treatment effect. It helps to improve the patient's quality of life and promote the rehabilitation process.
[0033] like Figure 2 As shown, in one embodiment of the present disclosure, the first stimulation module includes: an oscillation circuit, a waveform generating circuit and a control circuit; the output end of the oscillation circuit is connected to the input end of the waveform generating circuit, the first output end of the waveform generating circuit is connected to the first end of the control circuit, the second output end of the waveform generating circuit is connected to the second end of the control circuit, and the third end of the control circuit is used to output a triangular wave signal or a square wave signal.
[0034] In this embodiment, the oscillation circuit generates a square wave signal of a specific frequency. This square wave signal serves as a basic signal source and provides input for the subsequent waveform generating circuit. After the waveform generating circuit receives the output signal from the oscillation circuit, the waveform generating circuit starts to work. The waveform generating circuit has two output terminals, the first output terminal is connected to the first terminal of the control circuit, and the second output terminal is connected to the second terminal of the control circuit. Through internal circuit design and processing, a triangular wave signal and a square wave signal can be generated respectively. These two signals with different waveforms will be transmitted to the control circuit for subsequent stimulation of the human body.
[0035] It can be concluded from the above that the first stimulation module of this embodiment generates an oscillating current through an oscillating circuit, the waveform generating circuit generates a waveform signal of a specific shape according to the oscillating current, and the control circuit processes and adjusts the waveform signal and finally outputs a signal for stimulating a specific part of the human body. This enables the respiratory neuromuscular stimulator to achieve accurate stimulation and evaluation of the human neuromuscular system.
[0036] like Figure 3 As shown, in one embodiment of the present disclosure, the oscillation circuit includes: a controller U1, a switch K3, a resistor R4 and a capacitor C1; the power supply end of the controller U1 is connected to the first end of the switch K3, the second end of the switch K3 is connected to the VCC power supply, the high trigger end of the controller U1 is connected to the low trigger end of the controller U1, the output end of the controller U1 is connected to the low trigger end of the controller U1 through the resistor R4, and the control end of the controller U1 is grounded through the capacitor C1.
[0037] In this embodiment, the controller U1 may be a 555 timer, and the controller U1 is used to output a square wave signal. The first end of the switch K3 is connected to the power supply end of the controller U1 (555 timer), and the second end is connected to the VCC power supply. When the switch K3 is closed, the VCC power supply supplies power to the controller U1, so that it can work normally.
[0038] When switch K3 is closed and controller U1 (555 timer) is powered on, the timer starts working through the cooperation of the internal circuit structure and external components (resistor R4 and capacitor C1). Controller U1 can continuously switch between high level and low level, and output a square wave signal from the output end. The specific square wave frequency and duty cycle depend on the values of resistor R4 and capacitor C1 and the internal parameters of the timer. This square wave signal is transmitted to the subsequent waveform generation circuit as a basic signal, which is used to further generate triangular wave signals and square wave signals to stimulate the human body and evaluate and treat diaphragmatic nerve damage.
[0039] like Figure 3 As shown, in one embodiment of the present disclosure, the waveform generating circuit includes: an operational amplifier U3, a resistor R5, a variable resistor RP1, a capacitor C7, an operational amplifier U2, a variable resistor RP2 and a variable resistor RP3, the inverting input terminal of the operational amplifier U3 is connected to the output terminal of the controller U1, the non-inverting input terminal of the operational amplifier U3 is connected to the control terminal of the controller U1, the output terminal of the operational amplifier U3 is connected to the sliding terminal of the variable resistor RP2 through the resistor R5, and the output terminal of the operational amplifier U3 is connected to the inverting input terminal of the operational amplifier U2 through the variable resistor RP1; the non-inverting input terminal of the operational amplifier U2 is connected to the sliding terminal of the variable resistor RP3, the first terminal of the variable resistor RP3 is connected to the first terminal of the switch K3, the second terminal of the variable resistor RP3 is grounded, the output terminal of the operational amplifier U2 is connected to the inverting input terminal of the operational amplifier U2 through the capacitor C7, the output terminal of the operational amplifier U2 is connected to the first terminal of the variable resistor RP2, and the second terminal of the variable resistor RP2 is connected to the low trigger terminal of the controller U1; the output terminal of the operational amplifier U3 serves as the first output terminal of the waveform generating circuit, and the output terminal of the operational amplifier U2 serves as the second output terminal of the waveform generating circuit.
[0040] In this embodiment, the square wave signal output by the controller U1 is relatively weak, and the inverting input terminal of the operational amplifier U3 is connected to the output terminal of the controller U1 (555 timer) to receive the square wave signal output by the 555 timer. Since the square wave signal output by the controller U1 is relatively weak, the operational amplifier U3 constitutes an amplification circuit to amplify the input square wave signal. The operational amplifier U2 constitutes an integration circuit, which is used to convert the square wave signal output by the operational amplifier U3 into a triangular wave signal. When the square wave signal is input to the inverting input terminal of the operational amplifier U2, it works together with the input voltage of the inverting input terminal and the feedback capacitor C7. Due to the characteristics of the integration circuit, the square wave signal is integrated, so that the output signal gradually becomes a triangular wave signal.
[0041] By adjusting the variable resistor RP1, the frequency of the output triangular wave signal or square wave signal can be changed. When the resistance value of the variable resistor RP1 changes, it will affect the size and time constant of the output signal of the operational amplifier U3 transmitted to the inverting input terminal of the operational amplifier U2, thereby changing the working state of the operational amplifier U2 integration circuit, and then changing the frequency of the output signal.
[0042] By adjusting the variable resistor RP2, the amplitude of the output triangle wave signal or square wave signal can be changed. The variable resistor RP2 is connected between the output terminal of the operational amplifier U3 and the output terminal of the operational amplifier U2, and is connected to the low trigger terminal of the controller U1. By adjusting the resistance value of the variable resistor RP2, the voltage distribution relationship in the circuit can be changed, thereby affecting the amplitude of the output signal.
[0043] In practical applications, the rheostat RP1 and the rheostat RP2 may be adjustment knobs.
[0044] From the above, it can be concluded that this embodiment converts the weak square wave signal output by the controller U1 into a triangle wave signal and a square wave signal through the amplification effect of the operational amplifier U3 and the integration effect of the operational amplifier U2, and changes the frequency and amplitude of the output signal by adjusting the rheostat RP1 and the rheostat RP2 to meet different stimulation requirements, which is used to stimulate the human body and evaluate and treat diaphragmatic nerve damage.
[0045] like Figure 3 As shown, in one embodiment of the present disclosure, the control circuit includes: a switch K1 and a relay K2; the first end of the switch K1 is connected to the first end of the switch K3, the second end of the switch K1 is connected to the first input end of the relay K2, and the second input end of the relay K2 is grounded; the normally open end of the relay K2 is connected to the first output end of the waveform generating circuit, the normally closed end of the relay K2 is connected to the second output end of the waveform generating circuit, and the common end of the relay K2 is used to output a triangular wave signal or a square wave signal.
[0046] In this embodiment, the first end of the switch K1 is connected to the first end of the switch K3. Since the second end of the switch K3 is connected to the VCC power supply, when the switch K3 is closed, the switch K1 can also obtain power through this connection. The second end of the switch K1 is connected to the first input end of the relay K2, and the second input end of the relay K2 is grounded, thus providing a power supply circuit for the operation of the relay K2.
[0047] In this embodiment, switch K1 can be a reset switch. When a triangular wave signal is output to the human body, switch K1 is disconnected, relay K2 is not energized, and the square wave signal output by operational amplifier U3 is sent to the normally open end of relay K2, so that the common end is connected to the normally closed end. At this time, the common end outputs the triangular wave signal from the second output end of the waveform generating circuit.
[0048] When a square wave signal is output to the human body, the switch K1 is pressed, and the relay K2 is energized and closed, so that the common terminal is connected to the normally open terminal. At this time, the common terminal outputs the square wave signal from the first output terminal of the waveform generating circuit.
[0049] In this way, the control circuit can choose to output a triangle wave signal or a square wave signal as needed to meet different stimulation requirements for stimulating the human body and evaluating diaphragmatic nerve damage.
[0050] like Figure 2 As shown, in one embodiment of the present disclosure, the second stimulation module includes: a push-pull circuit and an electrical stimulation circuit; the input end of the push-pull circuit is connected to the main control module, the output end of the push-pull circuit is connected to the input end of the electrical stimulation circuit, and the output end of the electrical stimulation circuit is used to generate an electrical stimulation signal.
[0051] In this embodiment, the input end of the push-pull circuit is connected to the main control module. The main control module sends a control signal to the push-pull circuit according to the information obtained from the first stimulation module and the signal feedback module.
[0052] The push-pull circuit can be a power amplifier circuit structure. When receiving the input signal of the main control module, the two transistors in the push-pull circuit are turned on alternately. In one cycle, when one transistor is turned on, the other transistor is turned off. In this way, the input signal can be power amplified to improve the current and voltage capabilities of the output signal.
[0053] The output end of the push-pull circuit is connected to the input end of the electrical stimulation circuit. The signal amplified by the push-pull circuit is input to the electrical stimulation circuit. The electrical stimulation circuit generates a specific electrical stimulation signal based on the input signal. The electrical stimulation signal has certain frequency, amplitude and waveform characteristics to meet the stimulation requirements of the human respiratory nerve muscles. The electrical stimulation circuit can change the characteristics of the output electrical stimulation signal by adjusting circuit parameters such as resistance, capacitance and inductance.
[0054] The main control module sends a control instruction to the push-pull circuit in the second stimulation module based on the feedback signal after the triangular wave signal and the square wave signal stimulate the human body. The push-pull circuit amplifies the input control signal and transmits it to the electrical stimulation circuit. The electrical stimulation circuit generates an electrical stimulation signal based on the amplified signal and applies the signal to the human body through the output end to stimulate the respiratory nerve muscles, thereby achieving the purpose of evaluating the degree of diaphragmatic nerve damage, determining the treatment plan, and evaluating the treatment effect.
[0055] like Figure 4As shown, in one embodiment of the present disclosure, the push-pull circuit includes: a switch tube Q1, a switch tube Q2 and a transformer T2; the control end of the switch tube Q1 is connected to the main control module, the first end of the switch tube Q1 is connected to the first input end of the transformer T2, and the second end of the switch tube Q1 is grounded; the second input end of the transformer T2 is connected to the third input end of the transformer T2, and the third input end of the transformer T2 is connected to the VCC power supply; the control end of the switch tube Q2 is connected to the main control module, the first end of the switch tube Q2 is connected to the fourth input end of the transformer T2, and the second end of the switch tube Q2 is grounded; the first output end of the transformer T2 is connected to the input end of the electrical stimulation circuit, and the second output end of the transformer T2 is grounded.
[0056] In this embodiment, the control ends of the switch tube Q1 and the switch tube Q2 are both connected to the main control module. The main control module can output two PWM control signals, and the amplitude and frequency of the two PWM control signals are the same to control the on and off states of the switch tubes Q1 and Q2. When the control end of the switch tube Q1 receives a high-level signal, the switch tube Q1 is turned on; when a low-level signal is received, the switch tube Q1 is turned off. Similarly, the switch tube Q2 also switches between the on and off states according to the control signal.
[0057] Exemplarily, the main control module outputs two PWM control signals which are respectively connected to the control ends of the switch tube Q1 and the switch tube Q2. When the control end of the switch tube Q1 receives a high-level signal, the switch tube Q1 is turned on, and the switch tube Q2 is in the cut-off state. The current starts from the VCC power supply, passes through the third input end of the transformer T2, and then flows to the ground through the first input end and the turned-on switch tube Q1. In this process, the transformer T2 begins to store energy and generates a corresponding induced voltage at its output end. Then, the main control module changes the control signal to turn off the switch tube Q1 and turn on the switch tube Q2. At this time, the current flows from the VCC power supply through the third input end, the fourth input end and the turned-on switch tube Q2 of the transformer T2 to the ground. Similarly, the transformer T2 will also generate different induced voltages in this state.
[0058] The control signal is continuously switched by the main control module, so that the switch tube Q1 and the switch tube Q2 are alternately turned on and off. In this process, the transformer T2 continuously stores and releases energy, and the induced voltage at its output end also changes continuously. This transformed voltage signal is output from the first output end of the transformer T2 and connected to the input end of the electrical stimulation circuit to provide input power for the electrical stimulation circuit to generate an electrical stimulation signal for stimulating the respiratory nerve muscles of the human body.
[0059] like Figure 4As shown, in one embodiment of the present disclosure, the electrical stimulation circuit includes: a rheostat RP4, a resistor R3, a thyristor Q3 and a transformer T1; the first end of the rheostat RP4 is connected to the output end of the push-pull circuit, the second end of the rheostat RP4 is grounded, the sliding end of the rheostat RP4 is connected to the control electrode of the thyristor Q3 through the resistor R3, the first end of the rheostat RP4 is connected to the first input end of the transformer T1, the second input end of the transformer T1 is connected to the anode of the thyristor Q3, the cathode of the thyristor Q3 is grounded, the first output end of the transformer T1 is used to generate an electrical stimulation signal, and the second output end of the transformer T1 is grounded.
[0060] In this embodiment, the variable resistor RP4 can adjust the resistance value in the circuit, thereby changing the voltage input to the control electrode of the thyristor Q3. By adjusting the resistance value of the variable resistor RP4, the intensity of the electrical stimulation signal output by the electrical stimulation circuit can be controlled. The resistor R3 plays a role in current limiting, preventing excessive current from flowing into the control electrode of the thyristor Q3, and protecting the thyristor from damage. The thyristor Q3 is a semiconductor device with a controllable conduction characteristic. When the control electrode of the thyristor Q3 receives a certain trigger voltage, the thyristor is turned on. By adjusting the resistance value of the variable resistor RP4, the voltage of the control electrode can be changed, thereby controlling the conduction degree of the thyristor. The conduction state of the thyristor determines the on-off state of the input circuit of the transformer T1. The transformer T1 plays the role of voltage conversion. When the thyristor Q3 is turned on, the current passes through the input circuit of the transformer T1, and the transformer T1 generates a specific electrical stimulation signal at the output end according to its parameters such as the turns ratio. This electrical stimulation signal can be adjusted as needed to meet the stimulation requirements for the respiratory nerve muscles of the human body.
[0061] Exemplarily, the voltage signal output by the push-pull circuit is transmitted to the control electrode of the thyristor Q3 through the variable resistor RP4 and the resistor R3. By adjusting the resistance value of the variable resistor RP4, the conduction degree of the thyristor Q3 can be controlled. When the thyristor Q3 is turned on, the current passes through the input circuit of the transformer T1, and the transformer T1 performs voltage conversion to generate an electrical stimulation signal at its first output terminal for stimulating the respiratory nerve muscles of the human body.
[0062] From the above, it can be concluded that the electrical stimulation circuit can generate electrical stimulation signals of appropriate intensity and characteristics as needed to stimulate and regulate the respiratory nerve muscles, thereby achieving the purpose of evaluating the degree of diaphragmatic nerve damage, determining treatment plans, and evaluating treatment effects.
[0063] like Figure 4 As shown, in one embodiment of the present disclosure, the electrical stimulation circuit also includes: a transistor Q4; the base of the transistor Q4 is connected to the sliding end of the resistor RP4, the emitter of the transistor Q4 is connected to the first end of the resistor RP4, and the collector of the transistor Q4 is connected to the first input end of the transformer T1.
[0064] In this embodiment, the transistor Q4 can be a PNP transistor. The transistor Q4 works in an amplification state and plays a role of a constant current, ensuring that the intensity of the output electrical stimulation signal remains stable during the treatment process.
[0065] During the treatment process, affected by uncontrollable factors, when the output voltage of transformer T2 increases, the current at the first input terminal of transformer T1 will increase. Since the variable resistor RP4 is connected to the first input terminal of transformer T1, the voltage at the sliding terminal of the variable resistor RP4 will also increase. The increase in the sliding terminal voltage increases the base current of transistor Q4. According to the amplification principle of the transistor, the increase in the base current will cause the emitter current of transistor Q4 to decrease. Because the emitter of transistor Q4 is connected to the first end of the variable resistor RP4 and the first input terminal of transformer T1, the decrease in the emitter current will inhibit the current at the first input terminal of transformer T1 from continuing to increase, thereby maintaining the current within a relatively stable range.
[0066] When the output voltage of transformer T2 decreases, the current at the first input terminal of transformer T1 will decrease. Similarly, the voltage at the sliding terminal of variable resistor RP4 will decrease. The decrease in the sliding terminal voltage causes the base current of transistor Q4 to decrease. At this time, the emitter current of transistor Q4 will increase. The increase in emitter current can compensate for the decrease in the current at the first input terminal of transformer T1, thereby suppressing the current at the first input terminal of transformer T1 from continuing to decrease, ensuring that the output electrical stimulation signal strength will not change significantly due to the fluctuation of the output voltage of transformer T2.
[0067] From the above, it can be concluded that the transistor Q4 can play a constant current role, which can ensure that the intensity of the electrical stimulation signal output during the treatment process is stable. When faced with changes in the output voltage of transformer T2 caused by uncontrollable factors, whether the output voltage increases or decreases, the transistor Q4 can dynamically adjust the current at the first input terminal of transformer T1 through its connection with the variable resistor RP4 and its own amplification principle. When the output voltage increases, the current is suppressed from continuing to increase to prevent the electrical stimulation signal from being too strong; when the output voltage decreases, the compensation current decreases to avoid the electrical stimulation signal from weakening. This ensures that the intensity of the electrical stimulation signal is always within a relatively stable range throughout the treatment process, improves the reliability and safety of the treatment, and provides patients with a more stable and effective treatment experience.
[0068] like Figure 2 As shown, in one embodiment of the present disclosure, it also includes: a display module and a wireless communication module; the display module is connected to the main control module, and the main control module is connected to the monitoring terminal through the wireless communication module.
[0069] In this embodiment, the main control module transmits relevant information of the respiratory nerve muscle stimulator, such as the current stimulation mode (square wave or triangle wave stimulation), stimulation intensity, output electrical stimulation signal parameters and other data to the display module. The display module can be a device such as a liquid crystal display screen, which displays this information to the user or medical staff in an intuitive way. This makes it convenient for the user to understand the working status of the stimulator in real time, and also makes it convenient for medical staff to observe and adjust parameters during the treatment process.
[0070] The wireless communication module can use wireless communication technologies such as Bluetooth and Wi-Fi. It establishes a communication link between the main control module and the monitoring terminal. The main control module sends important data such as the operating data of the stimulator and the patient's physiological feedback information to the monitoring terminal through the wireless communication module. The monitoring terminal can be a doctor's computer, mobile device, etc. Medical staff can remotely monitor the working status of the stimulator and the patient's treatment progress in real time through the monitoring terminal. If an abnormal situation is found, the treatment plan can be adjusted in time or the stimulator can be remotely controlled. At the same time, the monitoring terminal can also send instructions to the main control module, such as adjusting stimulation parameters, switching stimulation modes, etc., to achieve remote management and control of the stimulator.
[0071] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present disclosure, and these modifications or replacements should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.
Claims
1. A respiratory nerve muscle stimulator with evaluation function, characterized in that: include: A first stimulation module, a second stimulation module, a signal feedback module and a main control module; The first stimulation module, the second stimulation module and the signal feedback module are all connected to the main control module; The first stimulation module is used to generate a triangular wave signal and a square wave signal, and the triangular wave signal and the square wave signal are used to stimulate the human body; The signal feedback module is used to collect feedback signals after the triangular wave signal and the square wave signal stimulate the human body; The main control module is used for sending a control instruction to the second stimulation module according to a feedback signal after the triangular wave signal and the square wave signal stimulate the human body; The second stimulation module is used to generate an electrical stimulation signal.
2. A respiratory nerve muscle stimulator with evaluation function as claimed in claim 1, characterized in that: The first stimulation module includes: an oscillation circuit, a waveform generation circuit and a control circuit; The output end of the oscillation circuit is connected to the input end of the waveform generating circuit, the first output end of the waveform generating circuit is connected to the first end of the control circuit, the second output end of the waveform generating circuit is connected to the second end of the control circuit, and the third end of the control circuit is used to output a triangular wave signal or a square wave signal.
3. A respiratory nerve muscle stimulator with evaluation function as claimed in claim 2, characterized in that: The oscillation circuit includes: a controller U1, a switch K3, a resistor R4 and a capacitor C1; The power supply end of the controller U1 is connected to the first end of the switch K3, the second end of the switch K3 is connected to the VCC power supply, the high trigger end of the controller U1 is connected to the low trigger end of the controller U1, the output end of the controller U1 is connected to the low trigger end of the controller U1 through the resistor R4, and the control end of the controller U1 is grounded through the capacitor C1.
4. A respiratory nerve muscle stimulator with evaluation function as claimed in claim 3, characterized in that: The waveform generating circuit comprises: an operational amplifier U3, a resistor R5, a variable resistor RP1, a capacitor C7, an operational amplifier U2, a variable resistor RP2 and a variable resistor RP3, wherein the inverting input terminal of the operational amplifier U3 is connected to the output terminal of the controller U1, the non-inverting input terminal of the operational amplifier U3 is connected to the control terminal of the controller U1, the output terminal of the operational amplifier U3 is connected to the sliding terminal of the variable resistor RP2 through the resistor R5, and the output terminal of the operational amplifier U3 is connected to the inverting input terminal of the operational amplifier U2 through the variable resistor RP1; The non-inverting input terminal of the operational amplifier U2 is connected to the sliding terminal of the variable resistor RP3, the first terminal of the variable resistor RP3 is connected to the first terminal of the switch K3, the second terminal of the variable resistor RP3 is grounded, the output terminal of the operational amplifier U2 is connected to the inverting input terminal of the operational amplifier U2 through the capacitor C7, the output terminal of the operational amplifier U2 is connected to the first terminal of the variable resistor RP2, and the second terminal of the variable resistor RP2 is connected to the low trigger terminal of the controller U1; The output end of the operational amplifier U3 serves as the first output end of the waveform generating circuit, and the output end of the operational amplifier U2 serves as the second output end of the waveform generating circuit.
5. A respiratory nerve muscle stimulator with evaluation function as claimed in claim 3, characterized in that: The control circuit includes: a switch K1 and a relay K2; The first end of the switch K1 is connected to the first end of the switch K3, the second end of the switch K1 is connected to the first input end of the relay K2, and the second input end of the relay K2 is grounded; The normally open end of the relay K2 is connected to the first output end of the waveform generating circuit, the normally closed end of the relay K2 is connected to the second output end of the waveform generating circuit, and the common end of the relay K2 is used to output a triangular wave signal or a square wave signal.
6. A respiratory nerve muscle stimulator with evaluation function as claimed in claim 1, characterized in that: The second stimulation module includes: a push-pull circuit and an electrical stimulation circuit; The input end of the push-pull circuit is connected to the main control module, the output end of the push-pull circuit is connected to the input end of the electrical stimulation circuit, and the output end of the electrical stimulation circuit is used to generate an electrical stimulation signal.
7. A respiratory nerve muscle stimulator with evaluation function as claimed in claim 6, characterized in that: The push-pull circuit includes: a switch tube Q1, a switch tube Q2 and a transformer T2; The control end of the switch tube Q1 is connected to the main control module, the first end of the switch tube Q1 is connected to the first input end of the transformer T2, and the second end of the switch tube Q1 is grounded; The second input terminal of the transformer T2 is connected to the third input terminal of the transformer T2, and the third input terminal of the transformer T2 is connected to the VCC power supply; The control end of the switch tube Q2 is connected to the main control module, the first end of the switch tube Q2 is connected to the fourth input end of the transformer T2, and the second end of the switch tube Q2 is grounded; The first output terminal of the transformer T2 is connected to the input terminal of the electrical stimulation circuit, and the second output terminal of the transformer T2 is grounded.
8. A respiratory nerve muscle stimulator with evaluation function as claimed in claim 6, characterized in that: The electrical stimulation circuit includes: a variable resistor RP4, a resistor R3, a thyristor Q3 and a transformer T1; The first end of the variable resistor RP4 is connected to the output end of the push-pull circuit, the second end of the variable resistor RP4 is grounded, the sliding end of the variable resistor RP4 is connected to the control electrode of the thyristor Q3 through the resistor R3, the first end of the variable resistor RP4 is connected to the first input end of the transformer T1, the second input end of the transformer T1 is connected to the anode of the thyristor Q3, the cathode of the thyristor Q3 is grounded, the first output end of the transformer T1 is used to generate an electrical stimulation signal, and the second output end of the transformer T1 is grounded.
9. A respiratory nerve muscle stimulator with evaluation function as claimed in claim 8, characterized in that: The electrical stimulation circuit further includes: a transistor Q4; The base of the transistor Q4 is connected to the sliding end of the resistor RP4, the emitter of the transistor Q4 is connected to the first end of the resistor RP4, and the collector of the transistor Q4 is connected to the first input end of the transformer T1.
10. A respiratory nerve muscle stimulator with evaluation function as claimed in claim 1, characterized in that: Also includes: Display module and wireless communication module; The display module is connected to the main control module, and the main control module is connected to the monitoring terminal through the wireless communication module.