A voltage pulse modulation circuit and a lumbar spine therapy device

Abstract

This invention relates to a voltage pulse modulation circuit and a lumbar spine therapeutic device. The voltage pulse modulation circuit includes an output modulation circuit, a constant voltage input circuit, and a controller. The output modulation circuit is electrically connected to both the constant voltage input circuit and the controller. The constant voltage input circuit converts the voltage of the input power supply into a constant input voltage and sends it to the output modulation circuit. The controller generates a control signal based on a voltage demand command and sends it to the output modulation circuit. The output modulation circuit modulates the constant input voltage under the influence of the control signal to obtain a required output voltage pulse. This invention provides a voltage pulse modulation circuit and a lumbar spine therapeutic device. By using a controller, the adjustable magnitude and frequency of the output voltage pulse are increased, improving the therapeutic effect on lumbar spine lesions. The output modulation circuit also avoids the potential harm caused by high voltage.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a voltage pulse modulation circuit and a lumbar spine therapy device. Background Technology

[0002] The lumbar spine plays a vital role in human activity, and its health is crucial for learning and work efficiency. Due to prolonged sitting, long working hours, and high work intensity in modern cities, many people experience lower back problems. If lumbar spine health is not addressed promptly, the constant strain can lead to gradual degeneration. When lumbar spine diseases occur, appropriate treatment is needed to correct the body's physiological curves, relieve pressure on the lumbar spine, clear the meridians, and thus alleviate lumbar spine disorders. Therefore, lumbar spine therapy devices can effectively meet people's needs for lumbar spine protection.

[0003] In existing technologies, lumbar spine treatment devices can be used to treat lumbar spine conditions. The device is placed against the lower back of the body, and the electrode pads of the device are attached to the lower back. The magnitude and frequency of the output pulse voltage are adjusted to treat lumbar spine lesions through the pulse voltage.

[0004] However, in order to avoid damage to the human body from the output pulse voltage, the range of adjustable pulse voltage and frequency of existing lumbar spine therapy devices is limited, resulting in an insignificant therapeutic effect on the human lumbar spine. Furthermore, it is difficult to eliminate the high voltage suddenly generated in the circuit of the therapy device due to unexpected situations, which may damage the output end and potentially threaten the safety of the human body. Summary of the Invention

[0005] In view of this, it is necessary to provide a voltage pulse modulation circuit and a lumbar spine therapy device to solve the problems of limited adjustment range of output pulse voltage and frequency during lumbar spine therapy in the prior art, which leads to poor treatment effect and the inability to eliminate the safety hazards caused by high voltage.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] In a first aspect, the present invention provides a voltage pulse modulation circuit, comprising: an output modulation circuit, a constant voltage input circuit, and a controller; the output modulation circuit is electrically connected to the constant voltage input circuit and the controller respectively;

[0008] The constant voltage input circuit is used to convert the voltage of the input power supply into a constant input voltage and send it to the output modulation circuit;

[0009] The controller is used to generate control signals according to voltage demand commands and send them to the output modulation circuit;

[0010] The output modulation circuit is used to modulate the constant input voltage under the action of the control signal to obtain the required output voltage pulse.

[0011] In some possible implementations, the output modulation circuit includes a boost circuit, a current limiting circuit, an output control circuit, and a safety isolation circuit; the boost circuit, the current limiting circuit, the output control circuit, and the safety isolation circuit are electrically connected in sequence.

[0012] The boost circuit is used to boost the constant input voltage to a preset voltage.

[0013] Current limiting circuits are used to maintain a constant output current value and limit the output power.

[0014] The output control circuit is used to control the frequency and pulse width of the output pulse;

[0015] Safety isolation circuits are used to isolate output control circuits and prevent dangerous output voltages.

[0016] In some possible implementations, the boost circuit includes: transistors Q3 and Q4, inductor L2, diode D1, and resistors R10 and R11; one end of resistor R10 is connected to the controller, and the other end of resistor R10 is connected to the base of transistor Q3; one end of resistor R11 is connected to the controller, and the other end of resistor R11 is connected to the base of transistor Q4; the collector of transistor Q4 is connected to the base of transistor Q3, and the emitters of transistor Q3 and Q4 are grounded; one end of inductor L2 is connected to the constant voltage input circuit, and the other end of inductor L2 is connected to the anode of diode D1, and the collector of transistor Q3 is connected to the anode of diode D1; the cathode of diode D1 is connected to the current limiting circuit.

[0017] In some possible implementations, the current limiting circuit includes: a polarized capacitor C9; the positive terminal of the polarized capacitor C9 is connected to the negative terminal of the diode D1, and the negative terminal of the polarized capacitor C9 is grounded.

[0018] In some possible implementations, the output control circuit includes: a resistor R12, a transistor Q5, and a diode D2; one end of the resistor R12 is connected to the controller, and the other end of the resistor R12 is connected to the transistor Q5; the emitter of the transistor Q5 is grounded, the collector of the transistor Q5 is connected to the anode of the diode D2, and the cathode of the diode D2 is connected to the cathode of the polarized capacitor C9.

[0019] In some possible implementations, the safety isolation circuit includes: a transformer T1, output electrodes J3 and J4; the first port of transformer T1 is connected to the negative terminal of diode D2, the third port of transformer T1 is connected to the positive terminal of diode D2, the second port of transformer T1 is connected to the output electrode J3, and the fourth port of transformer T1 is connected to the output electrode J4.

[0020] In some possible implementations, the constant voltage input circuit includes: chip U1, several resistors, several capacitors, several transistors, and inductor L1; the sixth pin of chip U1 is connected to one end of inductor L2.

[0021] In some possible implementations, the controller is a microcontroller.

[0022] In some possible implementations, the constant voltage input circuit also includes a power supply battery, which is a single cell.

[0023] In a second aspect, the present invention also provides a lumbar spine treatment device, including a voltage pulse modulation circuit as described in any of the possible implementations above.

[0024] The beneficial effects of the above embodiments are as follows: The present invention provides a voltage pulse modulation circuit and a lumbar spine therapeutic device. The voltage pulse modulation circuit includes an output modulation circuit, a constant voltage input circuit, and a controller. The output modulation circuit is electrically connected to both the constant voltage input circuit and the controller. The constant voltage input circuit converts the voltage of the input power supply into a constant input voltage and sends it to the output modulation circuit. The controller generates a control signal according to a voltage demand command and sends it to the output modulation circuit. The output modulation circuit modulates the constant input voltage under the action of the control signal to obtain a required output voltage pulse. The voltage pulse modulation circuit and lumbar spine therapeutic device provided by the present invention, by generating a control signal through the controller to control the output modulation circuit, can adjust the magnitude and frequency of the output voltage pulse, increasing the adjustable magnitude and frequency of the output voltage pulse, thereby improving the therapeutic effect on lumbar spine lesions. Simultaneously, since the output modulation circuit can only handle low voltage, it can also avoid the harm caused by high voltage generated in unexpected situations during lumbar spine treatment, eliminating safety hazards. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of an embodiment of the voltage pulse modulation circuit provided by the present invention;

[0026] Figure 2 A schematic diagram of an embodiment of the output modulation circuit provided by the present invention;

[0027] Figure 3 A circuit diagram of an embodiment of the output modulation circuit provided by the present invention;

[0028] Figure 4 A circuit diagram of an embodiment of the constant voltage input circuit provided by the present invention;

[0029] Figure 5 This is a pin diagram of an embodiment of the microcontroller chip provided by the present invention. Detailed Implementation

[0030] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0031] In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically defined.

[0032] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0033] This invention provides a voltage pulse modulation circuit and a lumbar spine therapy device, which will be described below.

[0034] Please see Figure 1 , Figure 1 This is a schematic diagram of a voltage pulse modulation circuit according to an embodiment of the present invention. In a specific embodiment of the present invention, a voltage pulse modulation circuit 10 is disclosed, including: an output modulation circuit 100, a constant voltage input circuit 200, and a controller 300; the output modulation circuit 100 is electrically connected to the constant voltage input circuit 200 and the controller 300 respectively.

[0035] The constant voltage input circuit 200 is used to convert the voltage of the input power supply into a constant input voltage and send it to the output modulation circuit 100;

[0036] The controller 300 is used to generate a control signal according to the voltage demand command and send it to the output modulation circuit 100;

[0037] The output modulation circuit 100 is used to modulate the constant input voltage under the action of the control signal to obtain the required output voltage pulse.

[0038] In the above embodiment, the constant voltage input circuit 200 converts the voltage output by the power supply battery so that the output voltage can be maintained at a constant value. Because the power supply battery has a limited capacity, as the discharge activity proceeds, the capacity of the power supply battery will gradually decrease, and the voltage it can provide will also decrease. In order to maintain a stable voltage, the constant voltage input circuit 200 adjusts the output voltage pulse of the power supply battery to generate a constant output voltage pulse.

[0039] The controller 300 can generate a control signal according to the voltage demand command to control the output modulation circuit 100, so that the output treatment voltage can be adjusted within a wider range. Adjusting different duty cycles changes the conduction relationship of the output modulation circuit 100, and ultimately the size and frequency of the output voltage pulse that can be generated can also be adjusted.

[0040] It should be noted that the voltage demand command can be generated by the user through a corresponding adjustment device (such as a knob) according to their own needs, thereby adjusting the size and frequency of the voltage pulse according to the user's needs. Alternatively, it can be generated according to the voltage output rules preset inside the microcontroller, which generate preset periodic voltage pulses. It can also be a voltage demand command set in other ways. This invention does not impose further restrictions on this, only requiring that it can meet the user's requirements and generate corresponding control signals through the voltage demand command.

[0041] A compliant output voltage pulse means that the output modulation circuit 100 can output the required voltage within its adjustable output voltage pulse range to achieve the therapeutic effect on the lumbar spine.

[0042] Compared with the prior art, this embodiment provides a voltage pulse modulation circuit 10, which includes an output modulation circuit 100, a constant voltage input circuit 200, and a controller 300. The output modulation circuit 100 is electrically connected to the constant voltage input circuit 200 and the controller 300. The constant voltage input circuit 200 converts the voltage of the input power supply into a constant input voltage and sends it to the output modulation circuit 100. The controller 300 generates a control signal according to a voltage demand command and sends it to the output modulation circuit 100. The output modulation circuit 100 modulates the constant input voltage under the action of the control signal to obtain an output voltage pulse that meets the requirements. The present invention provides a voltage pulse modulation circuit 10 and a lumbar spine treatment device. The controller 300 generates a control signal to control the output modulation circuit 100, which can adjust the magnitude and frequency of the output voltage pulse, thereby increasing the adjustable magnitude and frequency of the output voltage pulse and improving the treatment effect on lumbar spine lesions. At the same time, since the output modulation circuit 100 can only pass low voltage, it can also avoid the harm caused by high voltage generated by accident during lumbar spine treatment, thus eliminating safety hazards.

[0043] Please see Figure 2 , Figure 2This is a schematic diagram of an embodiment of the output modulation circuit provided by the present invention. In some possible implementations, the output modulation circuit 100 includes a boost circuit 110, a current limiting circuit 120, an output control circuit 130, and a safety isolation circuit 140; the boost circuit 110, the current limiting circuit 120, the output control circuit 130, and the safety isolation circuit 140 are electrically connected in sequence.

[0044] The boost circuit 110 is used to boost the constant input voltage to a preset voltage.

[0045] The current limiting circuit 120 is used to keep the output current value constant and limit the output power.

[0046] The output control circuit 130 is used to control the frequency and pulse width of the output pulse;

[0047] Safety isolation circuit 140 is used to isolate output control circuit 130 to prevent dangerous output voltage.

[0048] In the above embodiment, the boost circuit 110, under the control of the controller 300, boosts and regulates the constant input voltage, and can control the output pulse voltage with an adjustable amplitude of 5V to 90V for the treatment of the lumbar spine.

[0049] The current-limiting circuit 120 stores the charge output from each boost, with a fixed capacitor value, ensuring consistent charge output to subsequent stages and a constant load connected to the output terminal, thus maintaining a constant final current. The current-limiting circuit 120 also provides safety protection for the output terminal. Since the boosted output voltage energy is stored by the current-limiting circuit 120, which can only store a small amount of charge, the output energy is minimal in the event of a circuit malfunction, preventing any damage to the output terminal and ensuring safe and reliable operation.

[0050] The output control circuit 130 controls when the boosted voltage is output and can adjust the frequency and bandwidth of the output voltage pulse. It can generate pulse voltage with an adjustable frequency of 0Hz to 100Hz and can also be grounded to prevent high voltage from being transmitted to the output electrode.

[0051] The safety isolation circuit 140 isolates the internal circuit and output terminal of the output modulation circuit 100 through a transformer, ensuring that the output terminal will not be damaged by lightning strikes, high voltage interference, standing wave voltage signals, etc., thus guaranteeing safety and stability during use.

[0052] Please see Figure 3 , Figure 3The circuit diagram of one embodiment of the output modulation circuit provided by the present invention shows that, in some possible implementations, the boost circuit 110 includes: transistors Q3 and Q4, inductor L2, diode D1, and resistors R10 and R11; one end of resistor R10 is connected to controller 300, and the other end of resistor R10 is connected to the base of transistor Q3; one end of resistor R11 is connected to controller 300, and the other end of resistor R11 is connected to the base of transistor Q4; the collector of transistor Q4 is connected to the base of transistor Q3, and the emitters of transistor Q3 and transistor Q4 are grounded; one end of inductor L2 is connected to constant voltage input circuit 200, and the other end of inductor L2 is connected to the anode of diode D1, and the collector of transistor Q3 is connected to the anode of diode D1; the cathode of diode D1 is connected to current limiting circuit 120.

[0053] In the above embodiment, the controller 300 connects to resistors R10 and R11 to input two sets of control signals PWM1 and PWM2 to the boost circuit 110. The two control signals have the same and fixed frequency, and the duty cycle of PWM2 is also fixed. The magnitude of the constant input voltage is changed by adjusting the duty cycle of PWM1.

[0054] In some possible implementations, the current limiting circuit 120 includes: a polarized capacitor C9; the positive terminal of the polarized capacitor C9 is connected to the negative terminal of the diode D1, and the negative terminal of the polarized capacitor C9 is grounded.

[0055] In the above embodiment, the polarized capacitor C9 stores the charge output by the boost circuit 110. The capacitance value of the capacitor remains constant, so the charge output by the subsequent stage of the polarized capacitor C9 also remains constant. Furthermore, the capacitance value of the capacitor is small, and the amount of charge stored is small. When the circuit malfunctions, the output power is very small and will not cause any damage to the output terminal, thereby ensuring safe and reliable use.

[0056] In some possible implementations, the output control circuit 130 includes: a resistor R12, a transistor Q5, and a diode D2; one end of the resistor R12 is connected to the controller 300, and the other end of the resistor R12 is connected to the transistor Q5; the emitter of the transistor Q5 is grounded, the collector of the transistor Q5 is connected to the positive terminal of the diode D2, and the negative terminal of the diode D2 is connected to the positive terminal of the polarized capacitor C9.

[0057] In the above embodiment, the controller 300, connected to resistor R12, inputs a control signal from DC_H1 to the output control circuit 130 to adjust the frequency and pulse width of the output voltage pulse. The electrical energy stored in the polarized capacitor C9 can only be released through the safety isolation circuit 140 when the base and emitter of transistor Q5 are turned on. The conduction time of the base and emitter of transistor Q5 determines the output time. At the same time, the conduction of the base and emitter of transistor Q5 also has grounding protection, further improving the safety of lumbar spine treatment.

[0058] In some possible implementations, the safety isolation circuit 140 includes: a transformer T1, output electrodes J3 and J4; the first port of the transformer T1 is connected to the negative terminal of the diode D2, the third port of the transformer T1 is connected to the positive terminal of the diode D2, the second port of the transformer T1 is connected to the output electrode J3, and the fourth port of the transformer T1 is connected to the output electrode J4.

[0059] In the above embodiment, transformer T1 is a safety isolation circuit. The output electrodes J42 and J43 are isolated from the internal circuit by a 600:600 transformer. The output terminal is completely isolated from the internal circuit in order to avoid the occurrence of high voltage output circuit in the circuit due to accident, which could cause harm to the human body.

[0060] It should be noted that the output modulation circuit 100 can only pass low voltage. Once high voltage appears, the output modulation circuit 100 will be burned out and will not be able to output high voltage to the output electrode through the safety isolation circuit 140, thus avoiding the output high voltage from causing harm to the human body.

[0061] Please see Figure 4 , Figure 4 The circuit diagram of one embodiment of the constant voltage input circuit provided by the present invention is shown below. In some possible implementations, the constant voltage input circuit 200 includes: chip U1, several resistors, several capacitors, several transistors, and inductor L1; the sixth pin of chip U1 is connected to one end of inductor L2.

[0062] In the above embodiment, the chip U1 is model SGM6611AYTQV11G / TR, which boosts the input voltage generated by the power supply battery and fixes the voltage output to prevent the output voltage pulse from becoming unstable as the power supply battery discharges, thus preventing poor treatment effect.

[0063] Please see Figure 5 , Figure 5 This is a pin diagram of one embodiment of the microcontroller chip provided by the present invention. In some possible implementations, the controller 300 is a microcontroller.

[0064] In the above embodiment, the microcontroller is model SH79F6441. The 27th, 28th and 29th pins of the microcontroller are connected to the PWM2 pin, PWM1 pin and DC_H1 pin in the output modulation circuit 100, respectively, and the generated control signal is sent to the output modulation circuit 100.

[0065] In some possible implementations, the constant voltage input circuit 200 also includes a power supply battery, which is a single cell.

[0066] In the above embodiments, as a preferred embodiment, the single cell used in the present invention is a lithium battery single cell, which has the advantages of high energy density, long service life, high power handling capacity, light weight, and environmental friendliness.

[0067] It should be noted that the voltage generated by the lithium battery cell in this invention is about 4.2V, and then the constant voltage input circuit 200 raises the voltage to 4.5V and outputs a fixed voltage value.

[0068] Secondly, the present invention also provides a lumbar spine treatment device, including a voltage pulse modulation circuit 10 as described in any of the possible implementations above.

[0069] In the above embodiments, the lumbar spine therapy device provided by the present invention is designed based on the voltage pulse modulation circuit 10 provided by the present invention, and its working principle can be realized through the voltage pulse modulation circuit 10.

[0070] In summary, the present invention provides a voltage pulse modulation circuit and a lumbar spine therapy device. The voltage pulse modulation circuit 10 includes: an output modulation circuit 100, a constant voltage input circuit 200, and a controller 300. The output modulation circuit 100 is electrically connected to the constant voltage input circuit 200 and the controller 300, respectively. The constant voltage input circuit 200 is used to convert the voltage of the input power supply into a constant input voltage and send it to the output modulation circuit 100. The controller 300 is used to generate a control signal according to the voltage demand command and send it to the output modulation circuit 100. The output modulation circuit 100 is used to modulate the constant input voltage under the action of the control signal to obtain an output voltage pulse that meets the requirements. The present invention provides a voltage pulse modulation circuit 10 and a lumbar spine treatment device. The controller 300 generates a control signal to control the output modulation circuit 100, which can adjust the magnitude and frequency of the output voltage pulse, thereby increasing the adjustable magnitude and frequency of the output voltage pulse and improving the treatment effect on lumbar spine lesions. At the same time, since the output modulation circuit 100 can only pass low voltage, it can also avoid the harm caused by high voltage generated by accident during lumbar spine treatment, thus eliminating safety hazards.

[0071] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A voltage pulse modulation circuit, characterized in that, include: The system includes an output modulation circuit, a constant voltage input circuit, and a controller; the output modulation circuit is electrically connected to both the constant voltage input circuit and the controller. The constant voltage input circuit is used to convert the voltage of the input power supply into a constant input voltage and send it to the output modulation circuit; The controller is used to generate a control signal according to the voltage demand command and send it to the output modulation circuit; The output modulation circuit is used to modulate the constant input voltage under the action of the control signal to obtain an output voltage pulse that meets the requirements; The output modulation circuit includes a current limiting circuit and a boost circuit. The boost circuit includes: transistors Q3 and Q4, inductor L2, diode D1, resistors R10 and R11. One end of resistor R10 is connected to the controller, and the other end of resistor R10 is connected to the base of transistor Q3. One end of resistor R11 is connected to the controller, and the other end of resistor R11 is connected to the base of transistor Q4. The collector of transistor Q4 is connected to the base of transistor Q3, and the emitters of transistors Q3 and Q4 are grounded. One end of inductor L2 is connected to the constant voltage input circuit, and the other end of inductor L2 is connected to the anode of diode D1. The collector of transistor Q3 is connected to the anode of diode D1. The cathode of diode D1 is connected to the current limiting circuit. The controller is connected to resistors R10 and R11, and inputs two sets of control signals, PWM1 and PWM2, to the boost circuit. The two sets of control signals have the same and fixed frequency, and the duty cycle of PWM2 is fixed. The magnitude of the constant input voltage is changed by adjusting the duty cycle of PWM1.

2. The voltage pulse modulation circuit according to claim 1, characterized in that, The output modulation circuit further includes an output control circuit and a safety isolation circuit; the boost circuit, the current limiting circuit, the output control circuit, and the safety isolation circuit are electrically connected in sequence. The boost circuit is used to boost the constant input voltage to a preset voltage; The current limiting circuit is used to maintain a constant output current value and limit the output power. The output control circuit is used to control the frequency and pulse width of the output pulse; The safety isolation circuit is used to isolate the output control circuit to prevent the output of dangerous voltages.

3. The voltage pulse modulation circuit according to claim 2, characterized in that, The current limiting circuit includes: a polarized capacitor C9; the positive terminal of the polarized capacitor C9 is connected to the negative terminal of the diode D1, and the negative terminal of the polarized capacitor C9 is grounded.

4. The voltage pulse modulation circuit according to claim 3, characterized in that, The output control circuit includes: a resistor R12, a transistor Q5, and a diode D2; one end of the resistor R12 is connected to the controller, and the other end of the resistor R12 is connected to the transistor Q5; the emitter of the transistor Q5 is grounded, the collector of the transistor Q5 is connected to the anode of the diode D2, and the cathode of the diode D2 is connected to the cathode of the polarized capacitor C9.

5. The voltage pulse modulation circuit according to claim 4, characterized in that, The safety isolation circuit includes: a transformer T1, an output electrode J3, and an output electrode J4; the first port of the transformer T1 is connected to the negative terminal of the diode D2, the third port of the transformer T1 is connected to the positive terminal of the diode D2, the second port of the transformer T1 is connected to the output electrode J3, and the fourth port of the transformer T1 is connected to the output electrode J4.

6. The voltage pulse modulation circuit according to claim 1, characterized in that, The constant voltage input circuit includes: chip U1, several resistors, several capacitors, several transistors, and inductor L1; the sixth pin of chip U1 is connected to one end of inductor L2.

7. The voltage pulse modulation circuit according to claim 1, characterized in that, The controller is a microcontroller.

8. The voltage pulse modulation circuit according to claim 6, characterized in that, The constant voltage input circuit also includes a power supply battery, which is a single cell.

9. A lumbar spine therapy device, characterized in that, Includes the voltage pulse modulation circuit as described in any one of claims 1-8 above.

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