Medical beauty treatment device and beauty treatment instrument based on all-fiber mid-infrared erbium laser

Abstract

The invention provides a medical beauty treatment device and beauty treatment instrument based on an all-fiber mid-infrared erbium laser, and relates to the technical field of medical beauty treatment, the device comprises a power supply module, a main control module, an all-fiber mid-infrared erbium laser module, a driving module and a phototherapy handle; the power supply module is respectively connected with the main control module, the driving module and the all-fiber intermediate infrared erbium laser module; the main control module is connected with the driving module and is used for controlling the all-fiber mid-infrared erbium laser module to output laser in different states through the driving module; the driving module is connected with the all-fiber mid-infrared erbium laser module and is used for providing a constant or modulated power supply for the all-fiber mid-infrared erbium laser module; the all-fiber mid-infrared erbium laser module is used for outputting 2.8 [mu] m laser in different states, so that the 2.8 [mu] m laser is transmitted to the phototherapy handle to act on a target area. The device solves the technical problems that an existing laser beautifying device is complex in structure, large in size and limited in application scene, and achieves the effects of simplifying the structure, reducing the cost and expanding the application scene.

Description

Technical Field

[0001] The present invention relates to the field of medical cosmetology technology, and in particular to a medical cosmetology device and a beauty instrument based on an all-fiber mid-infrared erbium laser. Background Art

[0002] All-fiber lasers usually refer to lasers that use optical fiber as a gain medium and all-fiber components in the laser cavity structure, so that laser transmission is completely carried out in a flexible optical fiber optical path. The coupling between all-fiber components is achieved through fiber couplers or fusion splicing. All-fiber lasers have been widely used in many fields due to their many advantages such as high beam quality, high conversion efficiency, good heat dissipation and easy integration. Thanks to their important applications in defense, medical, industrial and scientific research, mid-infrared lasers, especially all-fiber mid-infrared lasers, have become one of the research hotspots in the field of laser technology at home and abroad.

[0003] Since 2-20μm mid-infrared lasers cover multiple water molecule absorption peaks, they can be effectively used for precise ablation of skin tissues, and have broad prospects in the mid-infrared laser medical cosmetology, which has a strong market demand. Among them, medical cosmetology devices using 10.6μm carbon dioxide lasers and 3μm erbium lasers as laser light sources have been fully proven to have outstanding advantages in improving various skin conditions and aging characteristics in ablative laser skin resurfacing.

[0004] Since the 1990s, 3μm mid-infrared Er:YAG and Er:YSGG solid-state lasers have been put into medical cosmetology and commercial use. After several changes, the functional diversity of continuous, pulsed and variable pulse lasers has been enriched to meet different clinical needs. However, medical device systems based on such solid-state lasers are complex, bulky, unstable and have a limited lifespan, which restricts their application and development in the field of medical technology.

[0005] Fiber lasers, especially miniaturized all-fiber mid-infrared erbium lasers, have simple structures, small footprints, are maintenance-free, and have long lifespans. They can be used as an ideal way to obtain reliable 3μm erbium lasers and can be effectively applied in the field of medical cosmetic technology. So far, although a few institutions have used fluoride Er:ZBALN fibers to achieve ~3μm high-performance all-fiber erbium lasers, this technology requires both femtosecond direct writing of gratings on fragile ZBALN fibers and low-loss fusion splicing between fluoride fibers, which is technically difficult and challenging, and the technology cannot be operated in batches, resulting in high costs.

[0006] On the other hand, in practical applications, the appropriate laser type should be selected according to the patient's specific skin problems and needs. However, existing medical device lasers generally only include a single laser state output, and such single laser devices cannot meet some clinical use requirements.

[0007] In other words, the existing technical applications of laser medical beauty have the following technical problems: complex structure, large size, high cost of full fiber opticization, and limited application scenarios. Summary of the invention

[0008] The purpose of the present invention is to provide a medical cosmetic device and a beauty instrument based on an all-fiber mid-infrared erbium laser to alleviate the technical problems existing in the prior art such as complex structure, large size, high all-fiber cost, and limited application scenarios.

[0009] In a first aspect, an embodiment of the present invention provides a medical cosmetic device based on an all-fiber mid-infrared erbium laser, comprising: a power module, a main control module, an all-fiber mid-infrared erbium laser module, a driving module, and a phototherapy handle; the power module is respectively connected to the main control module, the driving module, and the all-fiber mid-infrared erbium laser module; the main control module is connected to the driving module, and is used to control the all-fiber mid-infrared erbium laser module to output lasers in different states through the driving module; the driving module is connected to the all-fiber mid-infrared erbium laser module, and is used to provide a constant power supply or a modulated power supply for the all-fiber mid-infrared erbium laser module; the all-fiber mid-infrared erbium laser module is used to output 2.8μm lasers in different states, thereby transmitting them to the phototherapy handle to apply the laser to the target area.

[0010] In some optional implementations, the all-fiber mid-infrared erbium laser module includes: a laser diode pump source, a laser resonant cavity, a fiber coupler, and an erbium-doped fluoride gain fiber; the laser resonant cavity includes: an optical fiber end-face coated mirror and a fluorine-aluminum-based end cap; the optical fiber end-face coated mirror and the erbium-doped fluoride gain fiber are low-loss butt-coupled through the optical fiber coupler; the fluorine-aluminum-based end cap is low-loss fused to the output end of the erbium-doped fluoride gain fiber.

[0011] In some optional implementations, the above-mentioned device also includes a human-computer interaction module; the above-mentioned human-computer interaction module is used to respond to the actual application settings, display the laser operation status and application parameters, and send the instruction data of the above-mentioned actual application settings to the above-mentioned main control module.

[0012] In some optional implementations, the above-mentioned device also includes a switching switch; the above-mentioned switching switch is connected to the above-mentioned main control module; the above-mentioned switching switch includes two interlocking switching switches for switching the laser output mode; the above-mentioned laser output mode includes: pulse mode and continuous mode.

[0013] In some optional implementations, the main control module includes: a serial communication interface, a microcontroller, and a switching switch interface; the microcontroller is connected to the human-computer interaction module via the serial communication interface; the serial communication interface is used to communicate with the human-computer interaction module; the microcontroller is connected to the switching switch via the switching switch interface; the switching switch interface is used to receive the laser output mode signal of the switching switch, and send the laser output mode signal to the microcontroller for processing.

[0014] In some optional implementations, the above-mentioned device also includes: a temperature control module, a fiber-optic coupling conduction module; the above-mentioned temperature control module is used to control the operating temperature of the above-mentioned device under room temperature conditions to be within a normal temperature threshold range; the above-mentioned temperature control module includes: a temperature sensor, a fan, a semiconductor cooling plate, and a heat sink; the above-mentioned fiber-optic coupling conduction module is respectively connected to the above-mentioned all-fiber mid-infrared erbium laser module and the above-mentioned phototherapy handle; the above-mentioned fiber-optic coupling conduction module is used to transmit the laser output by the above-mentioned all-fiber mid-infrared erbium laser module to the above-mentioned phototherapy handle.

[0015] In some optional implementations, the driving module includes: a voltage-stabilized power supply, a current regulating device, an operational amplifier chip, a MOS tube and a current feedback monitoring unit; the voltage-stabilized power supply is connected to one end of the all-fiber mid-infrared erbium laser module; the first end of the MOS tube is connected to the other end of the all-fiber mid-infrared erbium laser module, and the second end of the MOS tube is connected to the current feedback monitoring unit; the third end of the MOS tube is connected to one end of the operational amplifier chip; and the other end of the operational amplifier chip is respectively connected to the current regulating device and the current feedback monitoring unit.

[0016] In some optional implementations, the main control module further includes: an A / D converter and a D / A converter; the microcontroller of the main control module is connected to the drive module and the temperature control module through the A / D converter and the D / A converter; the A / D converter is used to convert the actual operating temperature analog quantity of the all-fiber mid-infrared erbium laser module and the actual current analog quantity of the current feedback monitoring unit into digital quantities to monitor the working status of the device in real time; the D / A converter is used to convert the expected current digital quantity of the current feedback monitoring unit into analog quantities and transmit it to the drive module; the D / A converter is also used to convert the expected operating temperature digital quantity of the all-fiber mid-infrared erbium laser module into analog quantities and transmit it to the temperature control module.

[0017] In some optional implementations, the power supply module includes an inter-board power supply and an external power supply; the inter-board power supply includes: 5V, 3.3V, 2.5V, 1.2V; the external power supply includes: 12V, 24V; the inter-board power supply is connected to the main control module for powering the main control module; the external power supply is respectively connected to the all-fiber mid-infrared erbium laser module, the drive module, and the temperature control module for powering the external power supply and the all-fiber mid-infrared erbium laser module, the drive module, and the temperature control module.

[0018] In a second aspect, an embodiment of the present invention provides a beauty instrument, comprising a shell, an operation panel and a medical beauty device based on an all-fiber mid-infrared erbium laser as described in any one of the first aspects; the main control module is arranged inside the shell, and the power module, the all-fiber mid-infrared erbium laser module, and the drive module are arranged on a shell on one side inside the shell; the operation panel and the human-computer interaction module and the switching switch module of the medical beauty device are arranged on a shell on the other side inside the shell; the phototherapy handle is connected to the outside of the shell through an optical fiber light guide arm connected to the all-fiber mid-infrared erbium laser module.

[0019] The present invention provides a medical cosmetic device and a beauty instrument based on an all-fiber mid-infrared erbium laser, the device comprising: a power module, a main control module, an all-fiber mid-infrared erbium laser module, a driving module, and a phototherapy handle; the power module is connected to the main control module, the driving module, and the all-fiber mid-infrared erbium laser module respectively; the main control module is connected to the driving module, and is used to control the all-fiber mid-infrared erbium laser module to output lasers of different states through the driving module; the driving module is connected to the all-fiber mid-infrared erbium laser module, and is used to provide a constant power supply or a modulated power supply for it; the all-fiber mid-infrared erbium laser module is used to output 2.8μm lasers of different states, so as to transmit them to the phototherapy handle to apply the laser to the target area. The device solves the technical problems of complex structure, large volume, and limited application scenarios in the prior art, and achieves the effect of simplifying the structure, reducing costs, and expanding application scenarios to meet different needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the structure of a medical cosmetic device based on an all-fiber mid-infrared erbium laser provided in an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of the structure of an all-fiber mid-infrared erbium laser module provided by an embodiment of the present invention;

[0023] Figure 3 A schematic diagram of the structure of a driving module provided by an embodiment of the present invention;

[0024] Figure 4 A schematic diagram of the structure of a medical device based on a 2.8μm miniaturized all-fiber mid-infrared erbium laser provided in an embodiment of the present invention;

[0025] Figure 5 A structural block diagram of a main control module and peripheral circuits provided by an embodiment of the present invention;

[0026] Figure 6 A timing relationship and pulse waveform demonstration diagram of a main control module core controlling a multi-state laser output of a 2.8μm miniaturized all-fiber mid-infrared erbium laser module provided in an embodiment of the present invention;

[0027] Figure 7 A comparison diagram of three switchable output lasers of a medical device based on a 2.8μm miniaturized all-fiber mid-infrared laser provided in an embodiment of the present invention;

[0028] Figure 8 A schematic diagram of the structure of a beauty instrument provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. Some embodiments of the present invention are described in detail below in conjunction with the drawings. The following embodiments and features in the embodiments can be combined with each other without conflict.

[0032] Since 2-20μm mid-infrared lasers cover multiple water molecule absorption peaks, they can be effectively used for precise ablation of skin tissues, and have broad prospects in the mid-infrared laser medical cosmetology, which has a strong market demand. Among them, medical cosmetology devices using 10.6μm carbon dioxide lasers and 3μm erbium lasers as laser light sources have been fully proven to have outstanding advantages in improving various skin conditions and aging characteristics in ablative laser skin resurfacing. Compared with the 10.6μm carbon dioxide laser, which has a higher risk of sequelae and complications and a longer recovery time, the 3μm mid-infrared erbium laser medical device has an order of magnitude higher absorption coefficient for water molecules, so that the laser energy is mainly concentrated on the extremely thin surface tissue to accurately remove the target tissue, reducing the impact on the surrounding normal tissue. The penetration depth is flexible and controllable, and it is the best solution for skin rejuvenation, wrinkle removal, acne scar improvement, pigmentation improvement, and skin growth removal.

[0033] Since the 1990s, 3μm mid-infrared Er:YAG and Er:YSGG solid-state lasers have been put into medical cosmetology and commercial use. After several changes, the functional diversity of continuous, pulsed and variable pulse lasers has been enriched to meet different clinical needs. However, medical device systems based on such solid-state lasers are complex, bulky, unstable and have a limited lifespan, which restricts their application and development in the field of medical technology. Fiber lasers, especially miniaturized all-fiber mid-infrared erbium lasers, have a simple structure, small footprint, are maintenance-free and have a long lifespan. They can be used as one of the ideal ways to obtain reliable 3μm erbium lasers and can be effectively used in the field of medical cosmetology technology.

[0034] To date, although a few institutions have achieved ~3μm high-performance all-fiber erbium lasers using fluoride Er:ZBALN optical fibers, this technology requires both femtosecond direct writing of gratings on fragile ZBALN optical fibers and low-loss fusion splicing between fluoride optical fibers. This technology is technically difficult and challenging, and cannot be operated in batches, resulting in high costs.

[0035] On the other hand, clinical trials have shown that ~3μm continuous, long pulse, and short pulse lasers have their own strengths in medical cosmetic applications, such as: ~3μm continuous laser energy output is stable, accurate, and highly controllable, but the risk of thermal damage is high and the application is limited; ~3μm long pulse laser energy output is relatively mild, highly safe, and has little thermal damage. It is effective for vascular lesions, hair removal, and other problems, but the effect is slow and takes a long time; ~3μm short pulse laser energy is concentrated, with little thermal damage, fast postoperative recovery, and low risk of pigmentation. It can be used to remove spots, tattoos, and improve wrinkles, acne scars, and other types of skin problems, but it has high requirements for operating technology and is expensive. In actual applications, the appropriate laser type should be selected according to the patient's specific skin problems and needs. However, existing medical device lasers generally only contain a single laser state output, and such single laser equipment cannot meet some clinical use needs.

[0036] In other words, the existing technical applications of laser medical cosmetology have the following technical problems: complex structure, large size, high cost of all-fiber optics, a single laser device cannot meet some clinical use requirements, and limited application scenarios.

[0037] Based on this, an embodiment of the present invention provides a medical cosmetic device and a cosmetic instrument based on an all-fiber mid-infrared erbium laser to alleviate the above-mentioned technical problems.

[0038] To facilitate understanding of this embodiment, a medical cosmetic device based on an all-fiber mid-infrared erbium laser disclosed in an embodiment of the present invention is first described in detail. Figure 1 The schematic diagram of the structure of a medical cosmetic device based on an all-fiber mid-infrared erbium laser is shown, and the device mainly includes:

[0039] Power module 110, main control module 120, all-fiber mid-infrared erbium laser module 130, drive module 140, phototherapy handle 150; the power module 110 is connected to the main control module 120, the drive module 140, and the all-fiber mid-infrared erbium laser module 130 respectively;

[0040] The main control module 120 is connected to the driving module 140, and is used to control the all-fiber mid-infrared erbium laser module 130 to output lasers of different states through the driving module 140; the driving module 140 is connected to the all-fiber mid-infrared erbium laser module 130, and is used to provide a constant power supply or a modulated power supply for the all-fiber mid-infrared erbium laser module 130;

[0041] The all-fiber mid-infrared erbium laser module 130 is used to output 2.8 μm lasers in different states, which are then transmitted to the phototherapy handle 150 to apply the laser to the target area.

[0042] In one embodiment, the all-fiber mid-infrared erbium laser module includes: a laser diode pump source, a laser resonant cavity, a fiber coupler, and an erbium-doped fluoride gain fiber. The laser resonant cavity includes: a fiber end-face coated mirror and a fluorine-aluminum-based end cap; the fiber end-face coated mirror and the erbium-doped fluoride gain fiber are low-loss butt-coupled through a fiber coupler; and the fluorine-aluminum-based end cap is low-loss fused to the output end of the erbium-doped fluoride gain fiber.

[0043] As a specific example, see Figure 2 As shown, the all-fiber mid-infrared erbium laser module can be a 2.8μm miniaturized all-fiber erbium-doped fluoride laser module, which includes: a laser diode pump source ①, a pump source pigtail ②, a fiber end face coated mirror pigtail ③, a fiber end face coated mirror ④, a fiber coupler ⑤, an erbium-doped fluoride gain fiber ⑥, a fluorine-aluminum-based end cap ⑦, and a fusion point ⑧.

[0044] Pump source pigtail ② is losslessly fused with fiber end face coated mirror pigtail ③; fiber end face coated mirror ④ is low-loss butt-coupled with erbium-doped fluoride gain fiber ⑥ through fiber coupler ⑤; fluorine-aluminum-based end cap ⑦ is low-loss fused to the output end of erbium-doped fluoride gain fiber ⑥; the laser resonant cavity is composed of fiber end face coated mirror ④ and fluorine-aluminum-based end cap ⑦; pump light is output from laser diode pump source ①, transmitted through pump source pigtail ②, fiber end face coated mirror pigtail ③, and fiber end face coated mirror ④ to erbium-doped fluoride gain fiber ⑥ to generate laser gain, and finally outputs 2.8μm laser through fluorine-aluminum-based end cap ⑦.

[0045] Among them, the laser diode pump source ① can also be called a semiconductor laser pump source. In this embodiment, it is a 976nm semiconductor laser, which can be adjusted in multiple degrees of freedom under the control instruction of the main control module, including: power, continuous / pulse state, pulse repetition rate / pulse width, etc.

[0046] The pump source pigtail ② is a 105 / 125μm multimode pigtail that comes with the pump; the optical fiber end face coated mirror pigtail ③ is a 105 / 125μm multimode pigtail that is the preparation base of the optical fiber end face coated mirror; the pump source pigtail ② and the optical fiber end face coated mirror pigtail ③ are losslessly fused, and there is a fusion point ⑧.

[0047] The optical fiber end face coating mirror ④ is obtained by mid-infrared dielectric film technology, and is a dichroic mirror deposited on the end face of the 105 / 125μm multimode pigtail with ion assistance. It has high transmittance to 976nm pump light and high reflection to 2.8μm laser. The optical fiber coupler ⑤ is a standard FC / PC connector for low-loss coupling of the optical fiber end face coating mirror ④ and the erbium-doped fluoride gain fiber ⑥. The erbium-doped fluoride gain fiber ⑥ is a double "D" type double-clad fluoride Er:ZBLAN optical fiber with a doping concentration of 70000ppm, a numerical aperture of 0.12, and a core / inner cladding / outer cladding of 15 / 240*260 / 285μm. The fluorine-aluminum-based end cap ⑦ is low-loss fused to the output end of the erbium-doped fluoride gain fiber ⑥, and has a fusion point ⑧. The laser resonant cavity is composed of the optical fiber end face coating mirror ④ and the fluorine-aluminum-based end cap ⑦.

[0048] In this embodiment, the all-fiber mid-infrared erbium laser module (i.e., the above-mentioned 2.8μm miniaturized all-fiber mid-infrared erbium laser module) uses double-clad Er:ZBLAN optical fiber as the gain medium, which is moderately priced and has good heat dissipation performance; its optical fiber end-face coated mirror is obtained by using mid-infrared dielectric film technology, has a high damage threshold, low cost, is easy to operate, and can be prepared in batches; the optical fiber end-face coated mirror and the end cap can constitute the laser all-fiber resonant cavity, without any free space components, with a simple structure and easy miniaturization.

[0049] In one embodiment, the above-mentioned medical cosmetic device also includes a human-computer interaction module; the human-computer interaction module is used to respond to the actual application settings, display the laser operation status and application parameters, and send the instruction data of the actual application settings to the main control module.

[0050] As a specific example, the human-computer interaction module includes a display device and a serial port data cable. The display device is provided with control buttons and a display screen for displaying the laser operation status. After the medical device is turned on, the required laser power is achieved by adjusting the control buttons on the display screen; the display device simultaneously displays the operation time and the accumulated output laser energy, which is convenient for subsequent analysis; when the system alarms, the display screen displays the details of the alarm information, which is convenient for after-sales feedback and maintenance. The serial port data cable is used to send data packets of the display device based on the RS232 protocol to the main control module.

[0051] The main control module is used to coordinate the collaborative work of various modules. It is responsible for processing the data packets sent by the human-computer interaction module, controlling each module in the system according to the instructions contained in the data packets, and also feeding back the processed data to the human-computer interaction module.

[0052] In one embodiment, the above-mentioned medical cosmetic device also includes a switching switch; the switching switch is connected to the main control module; the switching switch includes two interlocking switching switches for switching the laser output mode; the laser output mode includes: pulse mode and continuous mode.

[0053] In one embodiment, the above-mentioned medical cosmetic device also includes: a temperature control module, which is used to control the working temperature of the device under room temperature conditions to be within a normal temperature threshold range; the temperature control module includes: a temperature sensor, a fan, a semiconductor cooling plate, and a radiator.

[0054] The temperature control module includes two functions: the first temperature control submodule is used to control the temperature of the pump seed source part inside the laser; the second temperature control submodule is used to control the temperature of the laser.

[0055] The first temperature control submodule includes: a fan, a semiconductor cooling sheet, a radiator, and a temperature sensor; the semiconductor cooling sheet conducts the heat of the pump seed source to the radiator, and then the fan takes away the heat, and the temperature sensor feeds back the seed source temperature to the main control module in real time. The second temperature control submodule includes: a fan, which works continuously during operation to ensure stable operation of the laser.

[0056] In this embodiment, a temperature control module is used to ensure that the laser and its medical device operate at room temperature, without the need for additional water cooling equipment, with a small size, light weight, and diversified application scenarios.

[0057] In one embodiment, the above-mentioned medical cosmetic device also includes: a fiber-optic coupling conduction module; the fiber-optic coupling conduction module is respectively connected to the all-fiber mid-infrared erbium laser module and the phototherapy handle; the fiber-optic coupling conduction module is used to transmit the laser output by the all-fiber mid-infrared erbium laser module to the phototherapy handle.

[0058] As a specific example, the fiber-coupled conduction module includes: a fiber coupler and a fiber light guide arm; the fiber coupler can be a standard FC / PC connector, which is used to couple the laser output by the all-fiber mid-infrared erbium laser module into the fiber light guide arm, and then apply the laser to the target area through the phototherapy handle.

[0059] In one embodiment, the driving module includes: a voltage-stabilized power supply, a current regulating device, an operational amplifier chip, a MOS tube and a current feedback monitoring unit; wherein the voltage-stabilized power supply is connected to one end of the all-fiber mid-infrared erbium laser module; the first end of the MOS tube is connected to the other end of the all-fiber mid-infrared erbium laser module, and the second end of the MOS tube is connected to the current feedback monitoring unit; the third end of the MOS tube is connected to one end of the operational amplifier chip; and the other end of the operational amplifier chip is respectively connected to the current regulating device and the current feedback monitoring unit.

[0060] As a specific example, see Figure 3As shown, the driving module includes: a voltage regulator 28, a current regulator 13, an operational amplifier chip 14, a MOS tube 27 and a current feedback monitor 16. The voltage regulator 28 is connected to the 2.8μm all-fiber erbium-doped fluoride tunable laser module; the first end of the MOS tube 27 is connected to the other end of the 2.8μm all-fiber erbium-doped fluoride tunable laser module, the second end of the MOS tube 27 is connected to the current feedback monitor 16, and the third end is connected to one end of the operational amplifier chip 14; the other end of the operational amplifier chip 14 is respectively connected to one end of the current regulator 13 and one end of the current feedback monitor 16.

[0061] The voltage regulator 28 provides a stable voltage and adopts the D048025017M2N integrated power module. The power electronic conversion technology of this type of module adopts zero current and zero voltage switching technology. The noise of the module is one tenth to one hundredth of the noise of the traditional converter. This can meet the technical requirements of the semiconductor laser linear array module which is extremely sensitive to noise, and the size of the power supply is greatly reduced.

[0062] The current regulating device 13 regulates the output voltage of the operational amplifier chip 14. The output wavelength of the semiconductor laser pump source of the 2.8μm miniaturized all-fiber mid-infrared erbium laser module is 976nm. A small change in voltage will cause a large change in current. In order to ensure its stable operation, a MOS tube 27 is used, and a current series negative feedback is formed through a current feedback monitoring 16 to perform constant current control on the semiconductor laser pump source of the 2.8μm miniaturized all-fiber mid-infrared erbium laser module.

[0063] In this embodiment, the driving module can provide constant power / modulated power to the 2.8μm all-fiber erbium-doped fluoride tunable laser module to achieve rapid modulation of laser gain and obtain continuous, long pulse or short pulse laser output, which is suitable for improving various skin problems;

[0064] In one embodiment, the main control module includes: a serial communication interface, a microcontroller, and a switch interface; the microcontroller is connected to the human-computer interaction module through the serial communication interface; the serial communication interface is used to communicate with the human-computer interaction module;

[0065] The microcontroller is connected to the switching switch via a switching switch interface; the switching switch interface is used to receive a signal of the laser output mode of the switching switch, and send the signal of the laser output mode to the microcontroller for processing.

[0066] After receiving the instruction, the main control module sends the data to the driving module, and changes the input current state of the semiconductor laser pump source of the all-fiber mid-infrared erbium laser module through the current regulating device, so that the laser works in a continuous or pulsed state; in the pulsed state, its pulse width, repetition frequency and other degrees of freedom are flexibly adjustable.

[0067] The driving module provides a constant / frequency-adjustable current source for the semiconductor laser pump source of the all-fiber mid-infrared erbium laser module, thereby realizing the driving effect on the all-fiber mid-infrared erbium laser module.

[0068] In one embodiment, the main control module further includes: an A / D converter and a D / A converter; the microcontroller of the main control module is connected to the driving module and the temperature control module through the A / D converter and the D / A converter;

[0069] The A / D converter is used to convert the actual operating temperature analog quantity of the all-fiber mid-infrared erbium laser module and the actual current analog quantity of the current feedback monitoring unit into digital quantities, so as to monitor the working status of the device in real time;

[0070] The D / A converter is used to convert the digital value of the expected current of the current feedback monitoring unit into an analog value and transmit it to the drive module; the D / A converter is also used to convert the digital value of the expected operating temperature of the all-fiber mid-infrared erbium laser module into an analog value and transmit it to the temperature control module.

[0071] That is to say, in one embodiment, the main control module includes a serial communication interface, a microcontroller, an A / D converter, a D / A converter, a digital output interface, a JTAG interface, a FLASH memory, and a switch interface. The microcontroller is respectively connected to the serial communication interface, the A / D converter, the D / A converter, the digital output interface, the JTAG interface, the FLASH memory, and the switch interface; the microcontroller is connected to the human-computer interaction module through the serial communication interface, is connected to the drive module and the temperature control module through the A / D converter and the D / A converter, and is connected to the auxiliary function module through the digital output interface.

[0072] In this embodiment, the main control module can control and drive the 2.8μm miniaturized all-fiber mid-infrared erbium laser module according to the human-computer interaction command core to output continuous, short pulse, long pulse and other multi-state lasers to meet various medical cosmetic clinical needs and achieve the effect of one machine for multiple uses.

[0073] In one embodiment, the power module includes an inter-board power supply and an external power supply; the inter-board power supply includes: 5V, 3.3V, 2.5V, 1.2V; the external power supply includes: 12V, 24V; the inter-board power supply is connected to the main control module for powering the main control module; the external power supply is respectively connected to the all-fiber mid-infrared erbium laser module, the drive module, and the temperature control module for powering the external power supply and the all-fiber mid-infrared erbium laser module, the drive module, and the temperature control module.

[0074] In the above embodiment, after the power module supplies power, the medical device starts to run; after the main control module receives the data packet sent by the human-computer interaction module, the embedded program processes the data packet and sends instructions to the driving module, and quickly modulates the semiconductor laser pump source of the all-fiber mid-infrared erbium laser module, thereby adjusting the laser gain, so that the all-fiber mid-infrared erbium laser module finally outputs continuous, long pulse, short pulse and other multi-state flexible and adjustable mid-infrared laser (2.8μm); the multi-state laser is coupled to the optical fiber light guide arm through the optical fiber coupler, and then the laser is applied to the target area through the phototherapy handle.

[0075] As a specific example, Figure 4 As shown, an embodiment of the present invention provides a 2.8μm all-fiber continuous / pulse tunable laser medical device, which is composed of: a power module 1, a main control module 2, a 2.8μm all-fiber erbium-doped fluoride tunable laser module 3, a drive module 4, a temperature control module 5, a human-computer interaction module 6, an auxiliary function module 7, a fiber coupler 8, a fiber light guide arm 9, a phototherapy handle 10, and a switching switch 11.

[0076] The power module 1 is connected to the main control module 2, the 2.8μm all-fiber erbium-doped fluoride tunable laser module 3, and the temperature control module 5; the main control module 2 is connected to the drive module 4, the temperature control module 5, the human-computer interaction module 6, the auxiliary function module 7, and the switching switch 11; the 2.8μm all-fiber erbium-doped fluoride tunable laser module 3 is connected to the drive module 4, the temperature control module 5, and the fiber coupler 8; the continuous or pulsed laser output by the 2.8μm all-fiber erbium-doped fluoride tunable laser module 3 enters the fiber coupler 8, and is coupled into the fiber light guide arm 9 to transmit the laser to the phototherapy handle 10.

[0077] The power module 1 includes 24V input voltage, 5V chip voltage, 3.3V chip voltage, 2.5V chip voltage, and 1.2V chip voltage. The 24V input voltage is obtained from a 24V external power supply through a fuse, the 5V chip voltage is obtained from a buck step-down circuit based on TPS54340, and the 3.3V chip voltage, 2.5V chip voltage, and 1.2V chip voltage are all obtained from a buck step-down circuit based on RT8096CHGJ5.

[0078] The main control module 2 is used to coordinate the collaborative work of various modules, is responsible for processing the data packets sent by the human-computer interaction module, controls various modules in the system according to the instructions contained in the data packets, and also feeds back the processed data to the human-computer interaction module.

[0079] After receiving the instruction, the main control module 2 sends the data to the driving module 4, and changes the input current state of the semiconductor laser pump source of the 2.8μm miniaturized all-fiber mid-infrared erbium laser module 3 through the current regulating device 13, so that the laser works in a continuous or pulsed state; in the pulsed state, its pulse width, repetition frequency and other degrees of freedom are flexibly adjustable.

[0080] The driving module 4 provides a constant / frequency adjustable current source for the semiconductor laser pump source of the 2.8 μm miniaturized all-fiber mid-infrared erbium laser module 3 , thereby achieving a driving effect on the 2.8 μm all-fiber erbium-doped fluoride tunable laser module 3 .

[0081] The temperature control module 5 includes the temperature control of the pump seed source part inside the laser and the temperature control of the laser. The temperature control of the pump seed source includes a fan, a semiconductor cooling plate, a radiator, and a temperature sensor. The semiconductor cooling plate conducts the heat of the pump seed source to the radiator, and then the fan takes away the heat. The temperature sensor feeds back the seed source temperature to the main control module in real time; the temperature control of the laser, including the fan, works uninterruptedly during operation to ensure the stable operation of the laser.

[0082] The human-computer interaction module 6 includes a display device and a serial data cable. The display device is provided with control buttons and a display screen for displaying the laser operation status. After the medical device is turned on, the required laser power is achieved by adjusting the control buttons on the display screen. The display device simultaneously displays the operation time and the accumulated output laser energy, which is convenient for the doctor to analyze after the operation. When the system alarms, the display screen displays the details of the alarm information, which is convenient for after-sales feedback and maintenance. The serial data cable is used to send the data packet of the display device based on the RS232 protocol to the main control module 2.

[0083] The auxiliary function module 7 includes a medical device working status display light. The medical device working status display light can express four states: when the light is off, it indicates that the medical device is not powered on; when the yellow light is on, it indicates that the medical device is powered on but not outputting laser; when the green light is on, it indicates that the medical device is outputting laser; when the red light is on, it indicates that the medical device is faulty and in a safety alarm state.

[0084] The fiber coupler 8 is a standard FC / PC connector, which couples the output laser of the 2.8 μm miniaturized all-fiber mid-infrared erbium laser module 3 into the fiber light guide arm 9, and then applies the laser to the target area through the phototherapy handle 10.

[0085] The switching switch 11 is connected to the main control module 2. The switching switch 11 includes two switching switches. The two switching switches are used to switch the laser output between the pulse mode and the continuous mode, and the two switching switches are interlocked.

[0086] Combination Figure 5 As shown, a block diagram of the main control module 2 and the peripheral circuit structure is given. The main control module 2 is composed of: a serial communication interface 17, a microcontroller 18, an A / D converter 19, a D / A converter 20, a digital output interface 21, a JTAG interface 22, a FLASH memory 23, and a switching switch interface 24.

[0087] The microcontroller 18 is respectively connected to the serial communication interface 17, the A / D converter 19, the D / A converter 20, the digital output interface 21, the JTAG interface 22, the FLASH memory 23, and the switch interface 24; the microcontroller 18 is connected to the human-computer interaction module 6 through the serial communication interface 17, and is connected to the drive module 4 and the temperature control module 5 through the A / D converter 19 and the D / A converter 20, and is connected to the auxiliary function module 7 through the digital output interface 21.

[0088] The serial communication interface 17 is used to communicate with the human-computer interaction module 6 , receive instruction data sent by the human-computer interaction module 6 , and send feedback data to the human-computer interaction module 6 .

[0089] The A / D converter 19 converts the actual working temperature analog quantity of the semiconductor laser pump source of the 2.8 μm miniaturized all-fiber mid-infrared erbium laser module 3 and the actual current analog quantity of the current feedback monitoring 16 into digital quantities, so as to monitor the working state of the laser medical device in real time;

[0090] The D / A converter 20 converts the digital value of the expected current of the current feedback monitoring 16 into an analog value and transmits it to the driving module 4 , and converts the digital value of the expected operating temperature of the semiconductor laser pump source of the 2.8μm miniaturized all-fiber mid-infrared erbium laser module 3 into an analog value and transmits it to the temperature control module 5 .

[0091] The digital output interface 21 directly controls the working status display light of the medical device.

[0092] The switch interface 24 is used to receive the continuous / pulse signal from the switch 11 and send the signal to the microcontroller 18 for processing.

[0093] The microcontroller 18 is used to deframe the data sent by the human-machine interaction module 6, and feed back the processed data to the human-machine interaction module 6; the microcontroller 18 is also used to receive the actual working temperature digital quantity of the semiconductor laser pump source of the 2.8μm miniaturized all-fiber mid-infrared erbium laser module 3, the actual working temperature digital quantity of the 2.8μm miniaturized all-fiber mid-infrared erbium laser module 3 and the actual current conversion digital quantity of the current feedback monitoring 16, and perform pi adjustment to achieve the expected working temperature and expected current value; the microcontroller 18 is also used to monitor the working status of the medical device in real time, and display its data processing in real time through the digital quantity output interface; the microcontroller 18 is also used to generate a constant DC / frequency adjustable constant current source corresponding digital quantity after receiving the continuous / pulse signal of the switching switch 11, and then transmit it to the D / A converter 20 for conversion.

[0094] In this embodiment, the JTAG interface 22 and the FLASH memory 23 are used for software code debugging and firmware burning.

[0095] Figure 6 Demonstration diagram of the timing relationship and pulse waveform of the multi-state laser output of the 2.8μm miniaturized all-fiber mid-infrared erbium laser module controlled by the main control module core; Figure 7 This is a comparison chart of three switchable output lasers of a medical device based on a 2.8μm miniaturized all-fiber mid-infrared laser, where the three output lasers include: continuous light, single-pulse laser, and multi-pulse laser.

[0096] The medical cosmetic device based on an all-fiber mid-infrared erbium laser provided in an embodiment of the present invention overcomes the following shortcomings faced by current medical cosmetic devices: the existing solid-state erbium laser medical device system is complex, large in size, poor in stability, and has a limited lifespan, and its application scenarios are limited; the existing erbium laser medical cosmetic devices generally only include a single laser state output, and such a single laser device cannot meet some clinical use requirements. The medical cosmetic device based on an all-fiber mid-infrared erbium laser provided in an embodiment of the present invention has the advantages of miniaturization, low cost, high power, high energy, and adjustable laser output state, and has important practical value in different application scenarios and clinical needs.

[0097] In addition, an embodiment of the present invention further provides a beauty instrument, including a housing, an operation panel, and the medical beauty device based on an all-fiber mid-infrared erbium laser as described in any of the above embodiments.

[0098] The main control module is arranged inside the shell, the power module, the all-fiber mid-infrared erbium laser module, and the drive module are arranged on one side of the shell inside the shell; the operation panel and the human-machine interaction module and the switching switch module of the medical cosmetic device are arranged on the other side of the shell inside the shell; the phototherapy handle is connected to the outside of the shell through the optical fiber light guide arm connected to the all-fiber mid-infrared erbium laser module. For its specific structure and the corresponding relationship between the various modules of the medical cosmetic device based on the all-fiber mid-infrared erbium laser, see Figure 8 shown.

[0099] The beauty instrument provided in the embodiment of the present application has the same implementation principle and technical effects as the aforementioned medical beauty device embodiment. For the sake of brief description, for matters not mentioned in the beauty instrument embodiment, reference can be made to the corresponding contents in the aforementioned device embodiment. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific structures and working processes of the systems, devices and units described above can all refer to the corresponding structures and processes in the above embodiments, and will not be repeated here. The beauty instrument provided in the embodiment of the present application has the same technical features as the medical beauty device based on the all-fiber mid-infrared erbium laser provided in the above embodiment, so it can also solve the same technical problems and achieve the same technical effects.

[0100] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of the devices or units can be electrical, mechanical or other forms.

[0101] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0102] In addition, each functional unit in the embodiments provided in the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0103] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, electronic device, or network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0104] It should be noted that similar numbers and letters represent similar items in the accompanying drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0105] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A medical cosmetic device based on an all-fiber mid-infrared erbium laser, characterized in that: include: A power module, a main control module, an all-fiber mid-infrared erbium laser module, a drive module, and a phototherapy handle; the power module is respectively connected to the main control module, the drive module, and the all-fiber mid-infrared erbium laser module; The main control module is connected to the driving module, and is used to control the all-fiber mid-infrared erbium laser module to output lasers of different states through the driving module; the driving module is connected to the all-fiber mid-infrared erbium laser module, and is used to provide a constant power supply or a modulated power supply for the all-fiber mid-infrared erbium laser module; The all-fiber mid-infrared erbium laser module is used to output 2.8 μm lasers in different states, which are then transmitted to the phototherapy handle to apply the laser to the target area.

2. The medical cosmetic device based on the all-fiber mid-infrared erbium laser according to claim 1, characterized in that: The all-fiber mid-infrared erbium laser module includes: a laser diode pump source, a laser resonant cavity, a fiber coupler, and an erbium-doped fluoride gain fiber; The laser resonant cavity comprises: an optical fiber end face coated mirror and a fluorine-aluminum-based end cap; the optical fiber end face coated mirror and the erbium-doped fluoride gain optical fiber are low-loss butt-coupled through the optical fiber coupler; the fluorine-aluminum-based end cap is low-loss fused to the output end of the erbium-doped fluoride gain optical fiber.

3. The medical cosmetic device based on the all-fiber mid-infrared erbium laser according to claim 1, characterized in that: The device also includes a human-computer interaction module; The human-computer interaction module is used to display the laser operation status and application parameters in response to the actual application settings, and send the instruction data of the actual application settings to the main control module.

4. The medical cosmetic device based on the all-fiber mid-infrared erbium laser according to claim 3, characterized in that: The device also includes a switch; the switch is connected to the main control module; The switching switch includes two interlocking switching switches for switching the laser output mode; The laser output modes include: pulse mode and continuous mode.

5. The medical cosmetic device based on the all-fiber mid-infrared erbium laser according to claim 4, characterized in that: The main control module includes: a serial communication interface, a microcontroller, and a switch interface; The microcontroller is connected to the human-computer interaction module via the serial communication interface; the serial communication interface is used to communicate with the human-computer interaction module; The microcontroller is connected to the switch via the switch interface; the switch interface is used to receive a signal of the laser output mode of the switch, and send the signal of the laser output mode to the microcontroller for processing.

6. The medical cosmetic device based on the all-fiber mid-infrared erbium laser according to claim 2, characterized in that: The device also includes: a temperature control module and an optical fiber coupling conduction module; The temperature control module is used to control the working temperature of the device under room temperature to be within a normal temperature threshold range; the temperature control module includes: a temperature sensor, a fan, a semiconductor cooling sheet, and a radiator; The fiber-optic coupling conduction module is connected to the all-fiber mid-infrared erbium laser module and the phototherapy handle respectively; the fiber-optic coupling conduction module is used to transmit the laser output by the all-fiber mid-infrared erbium laser module to the phototherapy handle.

7. The medical cosmetic device based on the all-fiber mid-infrared erbium laser according to claim 6, characterized in that: The driving module includes: a voltage-stabilized power supply, a current regulating device, an operational amplifier chip, a MOS tube and a current feedback monitoring unit; The voltage-stabilized power supply is connected to one end of the all-fiber mid-infrared erbium laser module; the first end of the MOS tube is connected to the other end of the all-fiber mid-infrared erbium laser module, and the second end of the MOS tube is connected to the current feedback monitoring unit; the third end of the MOS tube is connected to one end of the operational amplifier chip; and the other end of the operational amplifier chip is respectively connected to the current regulating device and the current feedback monitoring unit.

8. The medical cosmetic device based on the all-fiber mid-infrared erbium laser according to claim 7, characterized in that: The main control module further includes: an A / D converter and a D / A converter; the microcontroller of the main control module is connected to the driving module and the temperature control module through the A / D converter and the D / A converter; The A / D converter is used to convert the actual operating temperature analog quantity of the all-fiber mid-infrared erbium laser module and the actual current analog quantity of the current feedback monitoring unit into digital quantities, so as to monitor the working state of the device in real time; The D / A converter is used to convert the digital value of the expected current of the current feedback monitoring unit into an analog value and transmit it to the driving module; the D / A converter is also used to convert the digital value of the expected operating temperature of the all-fiber mid-infrared erbium laser module into an analog value and transmit it to the temperature control module.

9. The medical cosmetic device based on the all-fiber mid-infrared erbium laser according to claim 6, characterized in that: The power supply module includes an inter-board power supply and an external power supply; the inter-board power supply includes: 5V, 3.3V, 2.5V, 1.2V; the external power supply includes: 12V, 24V; The inter-board power supply is connected to the main control module for supplying power to the main control module; the peripheral power supply is respectively connected to the all-fiber mid-infrared erbium laser module, the drive module, and the temperature control module for supplying power to the peripheral power supply and the all-fiber mid-infrared erbium laser module, the drive module, and the temperature control module.

10. A beauty instrument, characterized in that: A medical cosmetic device comprising a housing, an operation panel and the all-fiber mid-infrared erbium laser according to any one of claims 1 to 9; The main control module is arranged inside the shell, and the power module, the all-fiber mid-infrared erbium laser module, and the drive module are arranged on a shell on one side inside the shell; the operation panel and the human-computer interaction module and the switching switch module of the medical cosmetic device are arranged on a shell on the other side inside the shell; the phototherapy handle is connected to the outside of the shell through an optical fiber light guide arm connected to the all-fiber mid-infrared erbium laser module.

Images