Medical and cosmetic devices and beauty instruments based on all-fiber mid-infrared erbium lasers

Abstract

This invention provides a medical aesthetic device and instrument based on an all-fiber mid-infrared erbium laser, belonging to the field of medical aesthetic technology. The device includes: a power module, a main control module, an all-fiber mid-infrared erbium laser module, a drive module, and a phototherapy handpiece. The power module is 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 drive module and is used to control the all-fiber mid-infrared erbium laser module to output lasers in different states. The drive module is connected to the all-fiber mid-infrared erbium laser module and is used to provide it with a constant or modulated power supply. The all-fiber mid-infrared erbium laser module outputs lasers in different states at a wavelength of 2.8 μm, which are then transmitted to the phototherapy handpiece to act on the target area. This device solves the technical problems of existing laser aesthetic devices, such as complex structure, large size, and limited application scenarios, achieving the effects of simplified structure, reduced cost, and expanded application scenarios.

Description

Technical Field

[0001] This invention relates to the field of medical aesthetics technology, and in particular to a medical aesthetic device and beauty instrument based on an all-fiber mid-infrared erbium laser. Background Technology

[0002] All-fiber lasers typically refer to lasers that use optical fibers as the gain medium and employ all-fiber components in the laser cavity structure, allowing laser transmission to occur entirely within a flexible fiber optic path. Coupling between these components is achieved through fiber couplers or fusion splices. All-fiber lasers are widely used in numerous fields due to their high beam quality, high conversion efficiency, excellent heat dissipation, and ease of integration. Benefiting from their significant applications in defense, medicine, industry, and scientific research, mid-infrared lasers, especially all-fiber mid-infrared lasers, have become a research hotspot in the field of laser technology both domestically and internationally.

[0003] Because 2-20μm mid-infrared lasers encompass multiple water molecule absorption peaks, they can be effectively used for precise ablation of skin tissue, showing great promise in the booming mid-infrared laser medical aesthetics market. Among these, medical aesthetic devices using 10.6μm carbon dioxide lasers and 3μm erbium lasers as laser sources have been thoroughly demonstrated to have significant advantages in improving various skin conditions and signs of aging during ablative laser dermabrasion.

[0004] Since the 1990s, 3μm mid-infrared Er:YAG and Er:YSGG solid-state lasers have been used in medical aesthetics and commercial applications. Through several iterations, their functionality has been enriched with continuous, pulsed, and variable-pulse lasers to meet diverse clinical needs. However, medical devices based on these solid-state lasers are complex, bulky, unstable, and have limited lifespans, which restricts their application and development in the medical technology field.

[0005] Fiber lasers, especially miniaturized all-fiber mid-infrared erbium lasers, are simple in structure, small in footprint, maintenance-free, and long-lasting, making them one of the ideal pathways to obtain reliable 3μm erbium lasers, and effectively applied in the field of medical aesthetics. To date, although a few institutions have achieved ~3μm high-performance all-fiber erbium lasers using fluoride Er:ZBALN fibers, this technology simultaneously requires femtosecond direct-write gratings on fragile ZBALN fibers and low-loss fusion splicing between fluoride fibers, presenting significant technical challenges and making mass production impossible and costly.

[0006] On the other hand, in practical applications, the appropriate laser type should be selected based on the patient's specific skin problems and needs. However, existing medical laser devices generally only have a single laser output state, and such single-laser devices cannot meet some clinical needs.

[0007] In other words, existing laser medical aesthetic technologies suffer from technical problems such as complex structure, large size, high cost of full fiber optic integration, and limited application scenarios. Summary of the Invention

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

[0009] In a first aspect, embodiments of the present invention provide a medical aesthetic device based on an all-fiber mid-infrared erbium laser, comprising: a power supply module, a main control module, an all-fiber mid-infrared erbium laser module, a drive module, and a phototherapy handpiece; the power supply module is connected to the main control module, the drive module, and the all-fiber mid-infrared erbium laser module respectively; the main control module is connected to the drive module and is used to control the all-fiber mid-infrared erbium laser module to output lasers in different states; the drive 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 to the all-fiber mid-infrared erbium laser module; the all-fiber mid-infrared erbium laser module is used to output lasers in different states at a wavelength of 2.8 μm, which are then transmitted to the phototherapy handpiece to apply the laser to a target area.

[0010] In some optional implementations, the aforementioned all-fiber mid-infrared erbium laser module includes: a laser diode pump source, a laser resonator, an optical fiber coupler, and an erbium-doped fluoride gain fiber; the aforementioned laser resonator includes: an optical fiber end-face coated mirror and an aluminum fluoride-based end cap; the aforementioned optical fiber end-face coated mirror and the aforementioned erbium-doped fluoride gain fiber are coupled together with the aforementioned optical fiber coupler in a low-loss manner; the aforementioned aluminum fluoride-based end cap is fused together with the aforementioned erbium-doped fluoride gain fiber in a low-loss manner at the output end of the aforementioned erbium-doped fluoride gain fiber.

[0011] In some optional implementations, the device further includes a human-machine interface module; the human-machine interface module is used to display the laser operating status and application parameters in response to actual application settings, and to send the instruction data of the actual application settings to the main control module.

[0012] In some optional implementations, the device further includes a switching switch; the switching switch is connected to the main control module; the switching switch includes two interlocked switching switches for switching the laser output mode; the 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 switch interface; the microcontroller is connected to the human-machine interface module via the serial communication interface; the serial communication interface is used to communicate with the human-machine interface module; the microcontroller is connected to the switch via the switch interface; the switch interface is used to receive the laser output mode signal of the switch and send the laser output mode signal to the microcontroller for processing.

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

[0015] In some optional implementations, the driving module includes: a regulated power supply, a current regulating device, an operational amplifier chip, a MOSFET, and a current feedback monitoring unit; the regulated power supply is connected to one end of the all-fiber mid-infrared erbium laser module; the first end of the MOSFET is connected to the other end of the all-fiber mid-infrared erbium laser module, and the second end of the MOSFET is connected to the current feedback monitoring unit; the third end of the MOSFET is connected to one end of the operational amplifier chip; and the other end of the operational amplifier chip is connected to both 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 analog quantity of the actual operating temperature of the all-fiber mid-infrared erbium laser module and the analog quantity of the actual current of the current feedback monitoring unit into digital quantities to monitor the operating status of the device in real time; the D / A converter is used to convert the expected digital quantity of the current of the current feedback monitoring unit into an analog quantity and transmit it to the drive module; the D / A converter is also used to convert the expected digital quantity of the all-fiber mid-infrared erbium laser module into an analog quantity and transmit it to the temperature control module.

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

[0018] Secondly, embodiments of the present invention provide a beauty device, including a housing, an operation panel, and a medical beauty device based on an all-fiber mid-infrared erbium laser as described in any of the first aspects; the main control module is disposed inside the housing, and the power module, the all-fiber mid-infrared erbium laser module, and the drive module are disposed on one side of the housing inside the housing; the operation panel, the human-computer interaction module of the medical beauty device, and the switching module are disposed on the other side of the housing inside the housing; the phototherapy handle is connected to the outside of the housing via an optical fiber guide arm connected to the all-fiber mid-infrared erbium laser module.

[0019] This invention provides a medical aesthetic device and beauty instrument based on an all-fiber mid-infrared erbium laser. The device includes: a power module, a main control module, an all-fiber mid-infrared erbium laser module, a drive module, and a phototherapy handpiece. The power module is 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 drive module and controls the all-fiber mid-infrared erbium laser module to output laser light in different states. The drive module is connected to the all-fiber mid-infrared erbium laser module and provides it with a constant or modulated power supply. The all-fiber mid-infrared erbium laser module outputs laser light in different states at a wavelength of 2.8 μm, which is then transmitted to the phototherapy handpiece to apply the laser light to the target area. This device solves the technical problems of complex structure, large size, and limited application scenarios in existing technologies, achieving simplified structure, reduced cost, and expanded application scenarios to meet different needs. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a medical aesthetic 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 in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of a driver module provided in 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 for an embodiment of the present invention;

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

[0026] Figure 6 This invention provides a timing relationship and pulse waveform demonstration diagram of the multi-state laser output of a 2.8μm miniaturized all-fiber mid-infrared erbium laser module for core control of the main control module;

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

[0028] Figure 8 This is a schematic diagram of a beauty device provided in an embodiment of the present invention. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0031] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Some embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0032] Because 2-20μm mid-infrared lasers encompass multiple water molecule absorption peaks, they can be effectively used for precise ablation of skin tissue, showing great promise in the booming mid-infrared laser medical aesthetics market. Among these, medical aesthetic devices using 10.6μm carbon dioxide lasers and 3μm erbium lasers as laser sources have been thoroughly proven to have significant advantages in improving various skin conditions and signs of aging during ablative laser dermabrasion. Compared to the 10.6μm carbon dioxide laser, which carries a higher risk of sequelae and complications and a longer recovery time, the 3μm mid-infrared erbium laser medical device increases the water molecule absorption coefficient by an order of magnitude. This allows the laser energy to be concentrated primarily in an extremely thin surface layer of tissue for precise removal of the target tissue, reducing the impact on surrounding normal tissue. The penetration depth is flexible and controllable, making it the optimal solution for skin rejuvenation, wrinkle removal, acne scar improvement, pigmentation reduction, and removal of skin growths.

[0033] Since the 1990s, 3μm mid-infrared Er:YAG and Er:YSGG solid-state lasers have been used in medical aesthetics and commercial applications. Through several iterations, their functionality has been enriched with continuous, pulsed, and variable-pulse lasers to meet diverse clinical needs. However, medical devices based on these solid-state lasers are complex, bulky, unstable, and have limited lifespans, which restricts their application and development in the medical field. Fiber lasers, especially miniaturized all-fiber mid-infrared erbium lasers, offer advantages such as simple structure, small footprint, maintenance-free operation, and long lifespan, making them an ideal pathway to obtaining reliable 3μm erbium lasers and effectively applicable in the field of medical aesthetics.

[0034] To date, although a few institutions have achieved high-performance all-fiber erbium lasers with a diameter of ~3μm using fluoride Er:ZBALN fiber, this technology requires both femtosecond direct-write gratings on fragile ZBALN fiber and low-loss fusion splicing between fluoride fibers, which is technically difficult and challenging. Furthermore, this technology cannot be mass-produced and is costly.

[0035] On the other hand, clinical trials have shown that ~3μm continuous, long-pulse, and short-pulse lasers each have their advantages in medical aesthetic applications. For example, ~3μm continuous lasers offer stable energy output, high precision, and high controllability, but carry a high risk of thermal damage and are applicable in fewer situations. ~3μm long-pulse lasers offer relatively gentle energy output, high safety, and minimal thermal damage, making them effective for vascular lesions and hair removal, but the effects are slow and take a long time. ~3μm short-pulse lasers offer concentrated energy, minimal thermal damage, rapid post-operative recovery, and a low risk of pigmentation, making them suitable for removing age spots, tattoos, and improving wrinkles, acne scars, and other skin problems. However, they require high operational skills and are expensive. In practical applications, the appropriate laser type should be selected based on the patient's specific skin problems and needs. However, existing medical laser devices generally only offer a single laser output state, and such single-laser devices cannot meet some clinical needs.

[0036] In other words, the current application of laser medical aesthetics technology has technical problems such as: complex structure, large size, high cost of full fiber optics, inability of a single laser device to meet some clinical needs, and limited application scenarios.

[0037] Based on this, embodiments of the present invention provide a medical aesthetic device and beauty 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 detailed description of a medical aesthetic device based on an all-fiber mid-infrared erbium laser, as disclosed in this embodiment of the invention, will be provided first. (See [link to relevant documentation]). Figure 1 The diagram shows a medical aesthetic device based on an all-fiber mid-infrared erbium laser. The device mainly includes:

[0039] The system includes a power supply module 110, a main control module 120, a full-fiber mid-infrared erbium laser module 130, a drive module 140, and a phototherapy handpiece 150. The power supply module 110 is connected to the main control module 120, the drive module 140, and the full-fiber mid-infrared erbium laser module 130.

[0040] The main control module 120 is connected to the drive module 140 and is used to control the output of the all-fiber mid-infrared erbium laser module 130 to output lasers in different states through the drive module 140; the drive 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 to the all-fiber mid-infrared erbium laser module 130.

[0041] The all-fiber mid-infrared erbium laser module 130 is used to output lasers in different states at 2.8 μm, which are then transmitted to the phototherapy handpiece 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, an optical fiber coupler, and an erbium-doped fluoride gain fiber. The laser resonant cavity includes: an optical fiber end-face coated mirror and an aluminum fluoride-based end cap; the optical fiber end-face coated mirror and the erbium-doped fluoride gain fiber are coupled via a low-loss connection using the optical fiber coupler; the aluminum fluoride-based end cap is fused to the output end of the erbium-doped fluoride gain fiber with low loss.

[0043] As a concrete 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. The module includes: a laser diode pump source ①, a pump source pigtail ②, a fiber end face coating mirror pigtail ③, a fiber end face coating mirror ④, a fiber coupler ⑤, an erbium-doped fluoride gain fiber ⑥, a fluorine-aluminum base end cap ⑦, and a fusion splice ⑧.

[0044] The pump source pigtail ② is non-destructively fused to the fiber end-face coated mirror pigtail ③; the fiber end-face coated mirror ④ is low-loss coupled to the erbium-doped fluoride gain fiber ⑥ via the fiber coupler ⑤; the fluorine-aluminum base end cap ⑦ is low-loss fused to the output end of the erbium-doped fluoride gain fiber ⑥; the laser resonator is composed of the fiber end-face coated mirror ④ and the fluorine-aluminum base end cap ⑦; the pump light is output from the laser diode pump source ①, and is transmitted through the pump source pigtail ②, the fiber end-face coated mirror pigtail ③, and the fiber end-face coated mirror ④ to the erbium-doped fluoride gain fiber ⑥ to generate laser gain, and finally output as a 2.8μm laser through the fluorine-aluminum base end cap ⑦.

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

[0046] Pump source pigtail ② is a 105 / 125μm multimode pigtail with built-in pump; fiber end face coating mirror pigtail ③ is a 105 / 125μm multimode pigtail used as the substrate for fabricating the fiber end face coating mirror; pump source pigtail ② and fiber end face coating mirror pigtail ③ are non-destructively fused together, with a fusion point ⑧.

[0047] The fiber end-face coated mirror ④ is obtained using mid-infrared dielectric film technology. It is a dichroic mirror deposited with ion assistance on the end face of a 105 / 125μm multimode pigtail, which has high transmittance for 976nm pump light and high reflectivity for 2.8μm laser light. The fiber coupler ⑤ is a standard FC / PC connector that couples the fiber end-face coated mirror ④ to the erbium-doped fluoride gain fiber ⑥ with low loss. The erbium-doped fluoride gain fiber ⑥ is a double "D"-type double-clad fluoride Er:ZBLAN fiber with a doping concentration of 70,000ppm, a numerical aperture of 0.12, and core / inner cladding / outer cladding dimensions of 15 / 240*260 / 285μm. The fluorine-aluminum base end cap ⑦ is fused to the output end of the erbium-doped fluoride gain fiber ⑥ with low loss, and has a fusion splice point ⑧. The laser resonator cavity is composed of the fiber end-face coated mirror ④ and the fluorine-aluminum base end cap ⑦.

[0048] In this embodiment, the all-fiber mid-infrared erbium laser module (i.e., the aforementioned 2.8μm miniaturized all-fiber mid-infrared erbium laser module) uses double-clad Er:ZBLAN fiber as the gain medium, which is moderately priced and has good heat dissipation performance. Its fiber end-face coating mirror is obtained using mid-infrared dielectric film technology, which has a high damage threshold, low cost, is easy to operate, and can be mass-produced. The all-fiber resonant cavity of the laser can be formed by the fiber end-face coating mirror and the end cap, without any free space components, which is simple in structure and easy to miniaturize.

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

[0050] As a concrete example, the human-machine interface module includes a display device and a serial data cable. The display device is equipped with control buttons and a screen for displaying the laser's operating status. After the medical device is powered on, the required laser power is achieved by adjusting the control buttons on the screen. The display device also shows the operation time and cumulative laser energy output, facilitating subsequent analysis. When an alarm occurs, the screen displays alarm details for after-sales feedback and repair. The serial data cable is used to send data packets from 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, process the data packets sent by the human-machine interaction module, control the various modules in the system according to the instructions contained in the data packets, and also feed back the processed data to the human-machine interaction module.

[0052] In one embodiment, the medical aesthetic device further includes a switching switch; the switching switch is connected to the main control module; the switching switch includes two interlocked 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 aesthetic device further includes: a temperature control module, which is used to control the operating temperature of the device under room temperature conditions to be within the normal temperature threshold range; the temperature control module includes: a temperature sensor, a fan, a semiconductor cooling chip, and a heat sink.

[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 thermoelectric cooler, a heat sink, and a temperature sensor. The thermoelectric cooler conducts heat from the pump seed source to the heat sink, and then the fan carries the heat away. The temperature sensor provides real-time feedback of the seed source temperature to the main control module. The second temperature control submodule includes a fan that operates continuously during operation to ensure stable laser operation.

[0056] In this embodiment, a temperature control module is used to ensure that the laser and its medical device operate at room temperature, eliminating the need for additional water cooling equipment. This results in a small size, light weight, and diverse application scenarios.

[0057] In one embodiment, the above-mentioned medical aesthetic device further includes: an optical fiber coupling transmission module; the optical fiber coupling transmission module is connected to the all-fiber mid-infrared erbium laser module and the phototherapy handpiece respectively; the optical fiber coupling transmission module is used to transmit the laser output by the all-fiber mid-infrared erbium laser module to the phototherapy handpiece.

[0058] As a specific example, the fiber optic coupling and transmission module includes: a fiber optic coupler and a fiber optic guide arm; the fiber optic coupler can be a standard FC / PC connector, used to couple the laser output from the all-fiber mid-infrared erbium laser module into the fiber optic guide arm, and then apply the laser to the target area through the phototherapy handpiece.

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

[0060] As a concrete example, see Figure 3As shown, the driving module includes: a regulated power supply 28, a current regulating device 13, an operational amplifier chip 14, a MOSFET 27, and a current feedback monitoring device 16. The regulated power supply 28 is connected to the 2.8μm all-fiber erbium-doped fluoride tunable laser module; the first end of the MOSFET 27 is connected to the other end of the 2.8μm all-fiber erbium-doped fluoride tunable laser module, the second end of the MOSFET 27 is connected to the current feedback monitoring device 16, and its third end is connected to one end of the operational amplifier chip 14; the other end of the operational amplifier chip 14 is connected to one end of the current regulating device 13 and one end of the current feedback monitoring device 16.

[0061] The regulated power supply 28 provides a stable voltage and uses the D048025017M2N integrated power module. This type of module employs zero-current, zero-voltage switching technology in its power electronic conversion. The module's noise is one-tenth to one-hundredth of that of traditional converters, which meets the technical requirements for noise-sensitive semiconductor laser linear array modules, and the power supply's size is significantly reduced.

[0062] The current regulating device 13 adjusts the output voltage of the operational amplifier chip 14. The semiconductor laser pump source of the 2.8μm miniaturized all-fiber mid-infrared erbium laser module has an output wavelength of 976nm. A small change in voltage will cause a large change in current. In order to ensure its stable operation, a MOS transistor 27 is used, and a current series negative feedback is formed through the 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 a constant power supply / modulation power supply 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 a variety of 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-machine interaction module via the serial communication interface; the serial communication interface is used to communicate with the human-machine interaction module.

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

[0066] After receiving the command, the main control module sends the data to the drive module, which 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 can work in continuous or pulsed state; in 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 driving 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 drive 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 analog quantity of the actual operating temperature of the all-fiber mid-infrared erbium laser module and the analog quantity of the actual current of the current feedback monitoring unit into digital quantities, so as to monitor the operating status of the device in real time.

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

[0071] 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 toggle switch interface. The microcontroller is 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 toggle switch interface. The microcontroller connects to the human-machine interface module via the serial communication interface, to the drive module and the temperature control module via the A / D converter and the D / A converter, and to the auxiliary function module via 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 to output continuous, short pulse, long pulse and other multi-state lasers according to the human-computer interaction command core, so as to meet a variety of medical and 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 a peripheral power supply; the inter-board power supply includes 5V, 3.3V, 2.5V, and 1.2V; the peripheral power supply includes 12V and 24V; the inter-board power supply is connected to the main control module and is used to power the main control module; the peripheral power supply is connected to the all-fiber mid-infrared erbium laser module, the driver module, and the temperature control module respectively, and is used to power the peripheral power supply and the all-fiber mid-infrared erbium laser module, the driver module, and the temperature control module.

[0074] In the above embodiment, after the power module supplies power, the medical device starts to operate; after receiving the data packet sent by the human-computer interaction module, the main control module processes the data packet and sends instructions to the drive module to rapidly modulate 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 a mid-infrared laser (2.8μm) with multiple states such as continuous, long pulse, and short pulse; the multi-state laser is coupled to the fiber optic guide arm through the fiber coupler, and then the laser is applied to the target area through the phototherapy handpiece.

[0075] As a concrete example, such as Figure 4 As shown, this embodiment of the invention provides a 2.8μm all-fiber continuous / pulse tunable laser medical device, which is composed of: a power supply 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, an optical fiber coupler 8, an optical fiber guide arm 9, a phototherapy handpiece 10, and a switching switch 11.

[0076] The power supply 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-machine interaction module 6, the auxiliary function module 7, and the 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 from the 2.8μm all-fiber erbium-doped fluoride tunable laser module 3 enters the fiber coupler 8, and is coupled into the fiber guide arm 9 to transmit the laser to the phototherapy handpiece 10.

[0077] Power module 1 includes a 24V input voltage, a 5V chip voltage, a 3.3V chip voltage, a 2.5V chip voltage, and a 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 converter circuit based on a TPS54340. The 3.3V, 2.5V, and 1.2V chip voltages are all obtained from buck converter circuits based on an RT8096CHGJ5.

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

[0079] After receiving the instruction, the main control module 2 sends the data to the drive module 4. The current regulating device 13 changes the semiconductor laser pump source input current state of the 2.8μm miniaturized all-fiber mid-infrared erbium laser module 3, so that the laser can work in continuous or pulsed state. In 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 2.8μm miniaturized all-fiber mid-infrared erbium laser module 3, thereby driving the 2.8μm all-fiber erbium-doped fluoride tunable laser module 3.

[0081] Temperature control module 5 includes temperature control for the pump seed source section inside the laser and temperature control for the laser itself. The temperature control for the pump seed source includes a fan, a thermoelectric cooler, a heat sink, and a temperature sensor. The thermoelectric cooler conducts heat from the pump seed source to the heat sink, and then the fan removes the heat. The temperature sensor provides real-time feedback of the seed source temperature to the main control module. The temperature control for the laser, including the fan, operates continuously during operation to ensure stable laser operation.

[0082] The human-machine interface module 6 includes a display device and a serial data cable. The display device is equipped with control buttons and a screen for displaying the laser's operating status. After the medical device is powered on, the required laser power is achieved by adjusting the control buttons on the screen. The display device also shows the operation time and cumulative laser energy output, facilitating postoperative analysis by the doctor. When an alarm occurs, the screen displays alarm details for after-sales feedback and maintenance. The serial data cable is used to send data packets from the display device (based on the RS232 protocol) to the main control module 2.

[0083] Auxiliary function module 7 includes a medical device operating status indicator light. This indicator 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 light; when the green light is on, it indicates that the medical device is outputting laser light; and when the red light is on, it indicates that the medical device has malfunctioned and is in a safety alarm state.

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

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

[0086] Combination Figure 5 As shown, a block diagram of the main control module 2 and its peripheral circuit structure is given. The main control module 2 consists 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 interface 24.

[0087] The microcontroller 18 is 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-machine interaction module 6 through the serial communication interface 17, to the drive module 4 and the temperature control module 5 through the A / D converter 19 and the D / A converter 20, and 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-machine interaction module 6, receive instruction data sent by the human-machine interaction module 6, and send feedback data to the human-machine interaction module 6.

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

[0090] The D / A converter 20 converts the expected digital current of the current feedback monitoring 16 into an analog quantity and transmits it to the drive module 4. It also converts 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 quantity and transmits it to the temperature control module 5.

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

[0092] The switching interface 24 is used to receive the continuous / pulse signal from the switching 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 the processed data back to the human-machine interaction module 6. The microcontroller 18 is also used to receive the digital value of the actual operating temperature of the semiconductor laser pump source of the 2.8μm miniaturized all-fiber mid-infrared erbium laser module 3, the digital value of the actual operating temperature of the 2.8μm miniaturized all-fiber mid-infrared erbium laser module 3, and the digital value of the actual current of the current feedback monitoring 16, and to perform pi adjustment to achieve the expected operating temperature and expected current value. The microcontroller 18 is also used to monitor the working status of the medical device in real time and to process and display its data in real time through the digital output interface. The microcontroller 18 is also used to generate the corresponding digital value of the constant DC / frequency adjustable constant current source 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 burning.

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

[0096] This invention provides a medical aesthetic device based on an all-fiber mid-infrared erbium laser, overcoming the following shortcomings of current medical aesthetic devices: existing solid-state erbium laser medical devices are complex, large in size, have poor stability and limited lifespan, limiting their application scenarios; existing erbium laser medical aesthetic devices generally only contain a single laser output state, and such single-laser devices cannot meet some clinical needs. The medical aesthetic device based on an all-fiber mid-infrared erbium laser provided in this invention has advantages such as miniaturization, low cost, high power, high energy, and adjustable laser output state, and has significant practical value in different application scenarios and clinical needs.

[0097] In addition, embodiments of the present invention also provide a beauty device, 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 located inside the outer casing. The power supply module, the all-fiber mid-infrared erbium laser module, and the drive module are located on one side of the inner casing. The operation panel, the human-computer interaction module for the medical aesthetic device, and the switching module are located on the other side of the inner casing. The phototherapy handpiece is connected to the outside of the casing via a fiber optic guide arm that connects to the all-fiber mid-infrared erbium laser module. For its specific structure and the correspondence between the modules of the medical aesthetic device based on the all-fiber mid-infrared erbium laser, please refer to [link to relevant documentation]. Figure 8 As shown.

[0099] The beauty device provided in this application embodiment has the same implementation principle and technical effects as the aforementioned medical beauty device embodiment. For the sake of brevity, any parts not mentioned in the beauty device embodiment can be referred to the corresponding content in the aforementioned device embodiment. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific structure and working process of the systems, devices, and units described above can all be referred to the corresponding structures and processes in the above embodiments, and will not be repeated here. The beauty device provided in this application embodiment has the same technical features as the medical beauty device based on an all-fiber mid-infrared erbium laser provided in the above embodiments, and therefore can solve the same technical problems and achieve the same technical effects.

[0100] In the embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

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

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

[0103] If the aforementioned functions are implemented as 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 this invention, essentially, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, electronic device, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0104] It should be noted that similar reference numerals and letters in the accompanying drawings indicate similar items. Therefore, once an item is defined in one accompanying drawing, it does not need to be further defined and explained in subsequent accompanying drawings. In addition, the terms "first," "second," "third," etc. are used only to distinguish descriptions and should not be construed 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, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions 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. An all-fiber mid-infrared erbium laser based medical aesthetic device, characterized in that, The device comprises a power module, a main control module, a full-fiber mid-infrared erbium laser module, a driving module, and a light therapy handle; the power module is connected with the main control module, the driving module, and the full-fiber mid-infrared erbium laser module respectively. The main control module is connected with the driving module, and is configured to control the full-fiber mid-infrared erbium laser module to output laser beams in different states through the driving module; the driving module is connected with the full-fiber mid-infrared erbium laser module, and is configured to provide constant power or modulated power for the full-fiber mid-infrared erbium laser module. The full-fiber mid-infrared erbium laser module is configured to output laser beams in different states at 2.8 μm, so as to transmit the laser beams to the light therapy handle to act on a target area. The full-fiber mid-infrared erbium laser module comprises a laser diode pump source, a laser resonant cavity, a fiber coupler, and a doped-fluoride gain fiber. The laser resonant cavity comprises a fiber end face coating mirror and a fluorine-aluminum base end cap; the fiber end face coating mirror is coupled with the doped-fluoride gain fiber through the fiber coupler in a low-loss butt joint manner; and the fluorine-aluminum base end cap is low-loss fusion spliced at the output end of the doped-fluoride gain fiber. The device further comprises a human-computer interaction module.

2. The all-fiber mid-infrared erbium laser-based medical aesthetic device according to claim 1, characterized in that, The human-computer interaction module is configured to display laser running states and application parameters in response to actual application settings, and send instruction data of the actual application settings to the main control module. The device further comprises a switching switch connected with the main control module.

3. The all-fiber mid-infrared erbium laser-based medical aesthetic device according to claim 2, characterized in that, The switching switch comprises two interlocked switching switches, and is configured to switch modes of laser output. The modes of laser output include a pulse mode and a continuous mode. The main control module comprises a serial communication interface, a microcontroller, and a switching switch interface.

4. The all-fiber mid-infrared erbium laser-based medical aesthetic device according to claim 3, characterized in that, The microcontroller is connected with the human-computer interaction module through the serial communication interface; and the serial communication interface is configured to communicate with the human-computer interaction module. The microcontroller is connected with the switching switch through the switching switch interface; the switching switch interface is configured to receive signals of the modes of laser output of the switching switch, and send the signals of the modes of laser output to the microcontroller for processing. The device further comprises a temperature control module and a fiber coupling transmission module.

5. The all-fiber mid-infrared erbium laser-based medical aesthetic device according to claim 1, characterized in that, The temperature control module is configured to control a working temperature of the device under room temperature conditions to be within a normal temperature threshold range; and the temperature control module comprises a temperature sensor, a fan, a semiconductor refrigeration sheet, and a heat sink. The fiber coupling transmission module is connected with the full-fiber mid-infrared erbium laser module and the light therapy handle respectively; and the fiber coupling transmission module is configured to transmit laser beams output by the full-fiber mid-infrared erbium laser module to the light therapy handle. The driving module comprises a stabilized power supply, a current adjusting device, an operational amplifier chip, a MOS tube, and a current feedback monitoring unit.

6. The all-fiber mid-infrared erbium laser-based medical aesthetic device according to claim 5, characterized in that, ​ The voltage stabilizing power supply is connected with one end of the all-fiber mid-infrared erbium laser module; the first end of the MOS tube is connected with the other end of the all-fiber mid-infrared erbium laser module, the second end of the MOS tube is connected with the current feedback monitoring unit; the third end of the MOS tube is connected with one end of the operational amplifier chip; the other end of the operational amplifier chip is connected with the current adjusting device and the current feedback monitoring unit respectively.

7. The all-fiber mid-infrared erbium laser-based medical aesthetic device according to claim 6, characterized in that, The master control module further comprises an A / D converter and a D / A converter; the microcontroller of the master control module is connected with 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 working 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 expected current digital quantity of the current feedback monitoring unit into an analog quantity and transmit it to the driving module; the D / A converter is also used to convert the expected working temperature digital quantity of the all-fiber mid-infrared erbium laser module into an analog quantity and transmit it to the temperature control module.

8. The all-fiber mid-infrared erbium laser-based medical aesthetic device according to claim 5, characterized in that, The power supply module comprises an inter-board power supply and a peripheral power supply; the inter-board power supply comprises 5V, 3.3V, 2.5V and 1.2V; the peripheral power supply comprises 12V and 24V; The inter-board power supply is connected with the master control module and used to supply power for the master control module; the peripheral power supply is connected with the all-fiber mid-infrared erbium laser module, the driving module and the temperature control module respectively and used to supply power for the peripheral power supply, the all-fiber mid-infrared erbium laser module, the driving module and the temperature control module.

9. A cosmetic device, characterized by, The medical cosmetic device based on the all-fiber mid-infrared erbium laser comprises a shell, an operation panel and the medical cosmetic device based on the all-fiber mid-infrared erbium laser according to any one of claims 1 to 8; The master control module is arranged in the interior of the shell, the power supply module, the all-fiber mid-infrared erbium laser module and the driving module are arranged on one side shell in the interior of the shell; the operation panel, the human-computer interaction module and the switch module of the medical cosmetic device are arranged on the other side shell in the interior of the shell; the light therapy handle is connected to the outside of the shell through the optical fiber light guide arm connected with the all-fiber mid-infrared erbium laser module.

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