Radio frequency microneedle instrument

Abstract

The invention discloses a radio frequency microneedle instrument, and relates to the field of skin beauty, the radio frequency microneedle instrument comprises a main machine box body, a radio frequency microneedle main control board, a radio frequency power supply and a negative pressure gas circuit assembly, an accessory installation fixing frame is installed in the main machine box body, and the radio frequency microneedle main control board, the radio frequency power supply and the negative pressure gas circuit assembly are all installed on the accessory installation fixing frame; a 48V adjustable power supply, a 12V switching power supply and a lithium battery are further installed on the accessory installation fixing frame, the negative pressure air path assembly is composed of an air pump and an electromagnetic valve, the exhaust end of the air pump is connected with the valve inlet end of the electromagnetic valve, and an air inlet of the air pump is connected with an internal filter and an external filter through a multi-way air pipe connector. The device has the advantages that the peristaltic effect is achieved, compression and pain caused by negative pressure adsorption are relieved, turn-off loss is greatly reduced, the frequency is high, the instantaneous peak power is high, the action time is short, pain is relieved, and the treatment effect is obvious.

Description

Technical Field

[0001] The present invention relates to the field of skin beauty equipment, in particular to a radio frequency micro-needle instrument. Background Art

[0002] With the continuous upgrading of medical technology, people's demand for medical care is also increasing. In skin beauty, radio frequency technology acts on tissues through electric current to generate heat. The energy generated is not absorbed by melanin, which can reduce the occurrence of post-inflammatory pigmentation. Therefore, it is more suitable for people with darker skin. At present, radio frequency equipment used in the field of skin beauty includes monopolar, bipolar and fractional radio frequency. Traditional radio frequency equipment transmits energy through direct contact between electrodes and epidermis or current loops between active electrodes. There are disadvantages of obvious pain or weak penetration during treatment. Against this background, radio frequency microneedles are born as a new type of beauty technology application. It combines microneedles, radio frequency and fractional technology. Microneedles mechanically penetrate the epidermis and emit radio frequency energy to the target tissue layer in a fractional mode. The treatment depth is accurately adjustable, the epidermis is less damaged, the risk of adverse reactions is low, and the downtime period is shorter than other photoelectric technologies. However, there will be pain. How to reduce pain and improve the effect of a single treatment during the treatment of radio frequency microneedle therapy is the most critical, and improving the effect of a single treatment is a major problem in this industry. Summary of the invention

[0003] The purpose of the present invention is to provide a radio frequency microneedle instrument in order to solve the above problems.

[0004] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0005] A radio frequency microneedle instrument comprises a mainframe box, a radio frequency microneedle main control board, a radio frequency power supply and a negative pressure air circuit assembly. An accessory mounting bracket is installed inside the mainframe box, and the radio frequency microneedle main control board, the radio frequency power supply and the negative pressure air circuit assembly are all installed on the accessory mounting bracket. A 48V adjustable power supply, a 12V switching power supply and a lithium battery are also installed on the accessory mounting bracket. The negative pressure air circuit assembly consists of an air pump and a solenoid valve. The exhaust end of the air pump is connected to the valve inlet end of the solenoid valve. The air inlet of the air pump is connected to an internal filter and an external filter through a multi-vent pipe joint. A screen is installed on the top of the mainframe box through a screen adjustment support frame, and the bottom of the mainframe box is connected to a support base through a bottom stand. A door hole is opened on the back of the mainframe box, and a box rear door panel is fixedly installed on the door hole. An external filter is installed on the The rear door panel of the box is also embedded with an external pneumatic tube connector, a handle connection socket and a power socket. One end of the external pneumatic tube connector is connected to the valve row end of the solenoid valve. The RF microneedle main control board is provided with a STMFCBT6 main control chip, a power supply circuit module group, a RF signal output detection circuit module group, an output detection circuit module group and an action control circuit module group. The action control circuit module group is composed of an air pump control circuit, a negative pressure regulation control circuit, a stepper motor drive circuit, an LED control circuit, a solenoid valve control circuit and two serial communication circuits. The RF power supply is composed of a cover, a RF power supply PCB board and a heat sink. The RF power supply PCB board is provided with a RF signal generating module, a RF drive control module, a RF transformer output detection module and a RF push-pull module.

[0006] Furthermore, a lower shielding cover, an upper shielding cover and a cooling fan group are installed in the housing, and a radio frequency power supply PCB board and a heat sink are installed between the lower shielding cover and the upper shielding cover;

[0007] Furthermore, the screen is composed of a rear-screen frame, a front-screen frame, and an inner display screen installed between the rear-screen frame and the front-screen frame.

[0008] Furthermore, a voice control panel and a speaker are installed on the accessory mounting bracket.

[0009] Furthermore, a power switch and an emergency stop switch are installed on the top wall of the mainframe box, and an indicator light is installed on the front wall of the mainframe box.

[0010] Furthermore, a plurality of casters are installed at the bottom of the support base for easy movement.

[0011] The beneficial effects are:

[0012] 1. Dynamically adjust the negative pressure to achieve peristaltic effect to reduce the pressure and pain caused by negative pressure adsorption;

[0013] 2. The RF power supply generates RF signals through a self-excited multivibrator to achieve fine-tuning within the frequency range. It does not require a complex driving circuit to achieve a high-power driving signal. It generates 4 sets of sinusoidal driving signals after driving the transformer. When the push-pull circuit is turned off, a reverse driving signal is generated to effectively cut off the gate voltage of the field effect, greatly reducing the turn-off loss;

[0014] 3. The frequency is high, the instantaneous peak power is high, the action time is short, the pain is reduced, and the treatment effect is more obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the exploded structure of a radio frequency microneedle instrument according to the present invention;

[0016] Figure 2 This is a diagram showing the internal structure of a radio frequency power supply of a radio frequency microneedle instrument according to the present invention;

[0017] Figure 3 It is a schematic diagram of a radio frequency microneedle main control board module of a radio frequency microneedle instrument described in the present invention;

[0018] Figure 4 The present invention discloses a circuit diagram of a radio frequency signal generating module of a radio frequency microneedle instrument.

[0019] The following are the descriptions of the reference numerals:

[0020] 1. Mainframe; 2. Screen adjustment support frame; 3. Accessory installation bracket; 4. Bottom stand; 5. Support base; 6. Screen, 61. Screen back frame, 62. Display inner screen, 63. Screen front frame, 64. Screen glass panel; 7. RF microneedle main control board; 8. RF power supply, 81. Cover, 82. RF power supply PCB board, 83. Heat sink, 84. Cooling fan assembly, 85. Lower shielding cover, 86. Upper shielding cover; 9. Box rear door panel; 10. Multi-ventilation pipe joint; 11. Internal filter; 12. Voice control board; 13. 48V adjustable power supply; 14. 12V switching power supply; 15. Air pump; 16. Solenoid valve; 17. Lithium battery; 18. Speaker; 19. External pneumatic tube connector; 20. Handle connection socket; 21. External filter; 22. Power socket; 23. Casters; 24. Power switch; 25. Emergency stop switch; 26. Indicator light. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the accompanying drawings:

[0022] like Figure 1-2 As shown, a radio frequency microneedle instrument is composed of a main housing 1, a radio frequency microneedle main control board 7, a radio frequency power supply 8 and a negative pressure air circuit component;

[0023] An accessory mounting bracket 3 is installed inside the main housing 1, and the RF microneedle main control board 7, the RF power supply 8 and the negative pressure air circuit assembly are all installed on the accessory mounting bracket 3. A 48V adjustable power supply 13, a 12V switching power supply 14 and a lithium battery 17 are also installed on the accessory mounting bracket 3. The lithium battery 17 is a DC power supply component. The negative pressure air circuit assembly consists of an air pump 15 and a solenoid valve 16. The exhaust end of the air pump 15 is connected to the valve inlet end of the solenoid valve 16. The air inlet of the air pump 15 is connected to an internal filter 11 and an external filter 21 through a multi-vent pipe joint 10, wherein the internal filter 11 is fixed to the accessory mounting bracket 3, where the internal and external air can be filtered and the negative pressure can be dynamically adjusted by changing the switch flow of the solenoid valve 16;

[0024] The top of the mainframe box 1 is equipped with a screen 6 through a screen adjustment support frame 2, and the bottom of the mainframe box 1 is connected to a support base 5 through a bottom stand frame 4 for easy support, wherein the bottom end of the bottom stand frame 4 is inserted and connected to the support base 5;

[0025] A door hole is provided at the back of the mainframe housing 1, and a rear door plate 9 of the housing is fixedly installed on the door hole. An external filter 21 is installed on the rear door plate 9 of the housing. An external pneumatic tube connector 19, a handle connection socket 20 and a power socket 22 are also embedded and installed on the rear door plate 9 of the housing. One end of the external pneumatic tube connector 19 is connected to the valve row end of the solenoid valve 16, which is convenient for connecting and driving the pneumatic components of the handle. The handle connection socket 20 is connected to the RF power supply 8 for communication, which is convenient for the external handle to output the RF current;

[0026] The radio frequency microneedle main control board 7 is provided with a main control chip, a power circuit module group, a radio frequency signal output detection circuit module group, an output detection circuit module group and an action control circuit module group. The main control chip adopts the STM32F103CBT6 main control chip;

[0027] like Figure 3 As shown, the power circuit module group consists of a DC-DC conversion circuit, a DC power supply voltage detection circuit, a DC adjustable power supply voltage regulation circuit and a lithium battery management circuit, wherein the DC-DC conversion circuit is connected to a DC input interface, the lithium battery management circuit is connected to a lithium battery interface, and the lithium battery charging management is composed of CN3762 and field effect tube AO4459, etc. The DC-DC power supply circuit module is connected to XL1509-5.0 to output 5V voltage after LC filtering, common mode inductance and Y capacitor filtering, and the 5V voltage is output 3.3V through LM1117-3.3 to power STM32F103RET6;

[0028] The action control circuit module group is composed of an air pump control circuit, a negative pressure regulation control circuit, a stepper motor drive circuit, an LED control circuit, a solenoid valve control circuit and two serial communication circuits, which are respectively connected to their corresponding interfaces. The stepper motor drive circuit module is composed of peripheral components such as L298N chip and L297 chip. The negative pressure control circuit is composed of PC817 optocoupler isolation chip, field effect MOS tube IRF840 and other devices. The RF drive module uses the DAC of the STM32F103RET6 main control chip to output an analog voltage of 0-3.3V. The amplifier circuit composed of the operational amplifier LM358, precision adjustable resistors and peripheral components realizes a 0-5V drive voltage connected to a 48V adjustable power supply to complete the RF input power supply adjustable from 10-48V.

[0029] The RF signal output detection circuit module group is composed of a RF output signal circuit and a RF power detection circuit, both of which are connected to the RF control interface to facilitate communication connection with the RF power supply 8.

[0030] like Figure 1-4 As shown, the present invention also discloses the following more optimized specific structures:

[0031] The RF power supply 8 is composed of a housing 81, a RF power supply PCB board 82 and a heat sink 83. A lower shielding cover 85, an upper shielding cover 86 and a cooling fan group 84 are installed in the housing 81. The RF power supply PCB board 82 and the heat sink 83 are installed between the lower shielding cover 85 and the upper shielding cover 86.

[0032] The RF power supply PCB board 82 is provided with a RF signal generating module, a RF drive control module, a RF voltage conversion output detection module and a RF push-pull module and other circuit modules, which are used for generating, converting and outputting the RF signal of the external handle. The circuit of the RF signal generating module is specifically referred to Figure 4 , mainly composed of a multivibrator consisting of a driving inductor, two 2SC5200 transistors, and a chip resistor. The frequency of the RF driving signal is fine-tuned by adjusting the distance between the driving inductor coil stages. The RF signal of this power supply is set to 6.0±0.1MHz.

[0033] The screen 6 is composed of a rear frame 61, a front frame 63, and an inner display screen 62 installed between the rear frame 61 and the front frame 63. A screen glass panel 64 is installed on the front side of the front frame 63. The UART1 serial port communication of the TM32F103RET6 main control chip is used to realize data interaction with the serial port touch screen 6 after MAX232 level conversion.

[0034] A voice control board 12 and a speaker 18 are installed on the accessory mounting bracket 3. The voice control board 12 and the radio frequency microneedle main control board 7 are connected together for communication. The voice broadcast control circuit communicates with the voice control board through the UART2 serial port communication of the STM32F103RET6 main control chip after MAX232 level conversion to realize voice broadcast.

[0035] A power switch 24 and an emergency stop switch 25 are installed on the top wall of the mainframe housing 1, and an indicator light 26 is installed on the front wall of the mainframe housing 1. The indicator light 26 is connected to the LED control circuit via an LED indicator light interface.

[0036] A plurality of casters 23 are installed at the bottom of the support base 5 for easy movement.

[0037] like Figure 1-Figure 4 The radio frequency microneedle instrument shown in the figure has an electrical interface of the handle installed and plugged into the handle connection socket 20 to realize the transmission of signals and currents, and its gas interface is installed on the external pneumatic tube connector 19. Under the communication control of the radio frequency microneedle main control board 7 and the radio frequency power supply PCB board 82, a radio frequency current is generated and acts on the human body through the handle. The radio frequency current is carried out at a rate of more than 600,000 times per second. The charged particles in the human tissue oscillate and rub at a high speed under the action of the radio frequency current, generating heat energy to act on the skin tissue at a certain depth, thereby achieving a therapeutic effect. During the treatment process, on the one hand, the microneedle emits radio frequency energy The amount of radiation is used to heat the dermis or subcutaneous tissue to form a thermal coagulation area, called the radiofrequency heating zone. On the other hand, the surrounding non-thermal injury area can maintain the integrity of the skin in the early stage, and can be used as a stem cell bank in the later stage to accelerate wound healing and reduce the risk of secondary infection and scar formation. The repair of thermal damage is a complex process. Studies have found that after radiofrequency treatment, cytokines, heat shock proteins, matrix metalloproteinases, extracellular matrix proteins and other components increase in different phases and degrees; new collagen and elastic fibers gradually increase and replace RFTZ 10 weeks after treatment;

[0038] The negative pressure regulation control circuit on the radio frequency microneedle main control board 7 mainly adopts the ULN20023 chip, which is electrically connected to the external handle through the negative pressure regulation stepper motor interface, so as to adjust the angle of the stepper motor (24BJY48) of the negative pressure device on the handle, so as to change the negative pressure so as to be suitable for different operation parts. During use, when the operation probe is adsorbed to the operation part, the on-off time of the air release solenoid valve is controlled by pulse to dynamically adjust the negative pressure of the adsorption part to achieve the peristaltic effect and reduce the pressure of adsorption, thereby reducing the pain caused by the negative pressure adsorption;

[0039] In this embodiment, the RF power supply 8 generates a RF signal by means of a self-excited multivibrator to achieve fine-tuning within the frequency range. A high-power drive signal is achieved without the need for a complex drive circuit. Four sets of sinusoidal drive signals are generated by driving the transformer. When the push-pull circuit is turned off, a reverse drive signal is generated to effectively cut off the gate voltage of the field effect, greatly reducing the turn-off loss. The RF power supply generates a 6MHz sinusoidal wave signal, which drives the stepper motor on the handle through the control signal of the RF microneedle control board to drive the microneedle to mechanically penetrate the epidermis directly to the dermis to release RF energy. The frequency is high, the instantaneous peak power is high, the action time is short, the pain is reduced, and the treatment effect is more obvious.

[0040] Those skilled in the art should understand that the present invention is not limited to the above-mentioned embodiments. The above-mentioned embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and improvements, and these changes and improvements shall all fall within the scope of the present invention claimed for protection.

Claims

1. A radio frequency microneedle instrument, characterized in that: The invention comprises a main housing (1), a radio frequency microneedle main control board (7), a radio frequency power supply (8) and a negative pressure gas circuit assembly. An accessory mounting bracket (3) is installed inside the main housing (1). The radio frequency microneedle main control board (7), the radio frequency power supply (8) and the negative pressure gas circuit assembly are all installed on the accessory mounting bracket (3). A 48V adjustable power supply (13), a 12V switching power supply (14) and a lithium battery (17) are also installed on the accessory mounting bracket (3). The negative pressure gas circuit assembly consists of an air pump (15) and a solenoid valve (17). 6), the exhaust end of the air pump (15) is connected to the valve inlet end of the solenoid valve (16), the air inlet of the air pump (15) is connected to the internal filter (11) and the external filter (21) through a multi-vent pipe joint (10), the top of the main box (1) is installed with a screen (6) through a screen adjustment support frame (2), the bottom of the main box (1) is connected to a support base (5) through a bottom stand (4), and the back of the main box (1) is provided with a door hole, and the door hole is fixedly installed with a box rear door plate (9) The external filter (21) is installed on the rear door plate (9) of the box body. The rear door plate (9) of the box body is also embedded with an external pneumatic tube connector (19), a handle connection socket (20) and a power socket (22). One end of the external pneumatic tube connector (19) is connected to the valve row end of the electromagnetic valve (16). The radio frequency microneedle main control board (7) is provided with a main control chip, a power supply circuit module group, a radio frequency signal output detection circuit module group, an output detection circuit module group and an action control circuit module group. The main control chip adopts The STM32F103CBT6 main control chip is used. The action control circuit module group is composed of an air pump control circuit, a negative pressure regulation control circuit, a stepper motor drive circuit, an LED control circuit, an electromagnetic valve control circuit and two serial communication circuits. The radio frequency power supply (8) is composed of a cover (81), a radio frequency power supply PCB board (82) and a heat sink (83). The radio frequency power supply PCB board (82) is provided with a radio frequency signal generation module, a radio frequency drive control module, a radio frequency transformer output detection module and a radio frequency push-pull module.

2. A radio frequency microneedle instrument according to claim 1, characterized in that: A lower shielding cover (85), an upper shielding cover (86) and a cooling fan group (84) are installed in the housing (81), and a radio frequency power supply PCB board (82) and a heat sink (83) are installed between the lower shielding cover (85) and the upper shielding cover (86).

3. The screen (6) is composed of a rear screen frame (61), a front screen frame (63), and an inner display screen (62) installed between the rear screen frame (61) and the front screen frame (63).

4. The accessory mounting bracket (3) is provided with a voice control panel (12) and a speaker (18).

5. A power switch (24) and an emergency stop switch (25) are installed on the top wall of the mainframe housing (1), and an indicator light (26) is installed on the front wall of the mainframe housing (1).

6. A plurality of casters (23) are installed at the bottom of the supporting base (5).

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