Super-pulse thulium fiber laser therapy apparatus

Abstract

The utility model provides an ultra-pulse thulium fiber laser therapy apparatus, which comprises a laser, an electrical device and a coupler, the laser is connected with the coupler through a thulium fiber, the laser and the coupler are respectively connected with the electrical device through a circuit, and the electrical device is connected with the coupler through a thulium fiber. The electrical device controls the operation of the laser and the coupler, the optical fiber is a thulium optical fiber emitted by the laser, and the wavelength of the laser is 1940 nanometers. The ultra-pulse thulium fiber laser therapy apparatus replaces a previous water cooling device and adopts a 1940nm laser internal air cooling device, so that the ultra-pulse thulium fiber laser therapy apparatus is more compact in structure, lighter in weight and smaller in size, and the problems of noise, frequent maintenance and replacement and the like caused by a large cooling-water machine are solved.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to an ultra-pulse thulium optical fiber laser therapeutic machine. Background Art

[0002] In recent years, the incidence of urinary stones has been extremely high. Holmium laser lithotripsy has entered primary hospitals due to its high safety, easy operation, and thorough lithotripsy, and has become an essential medical device in county-level hospitals.

[0003] In the prior art, such as Figure 1 The figure shows the gold standard of Ho:YAG laser lithotripsy for 30 years: Stage 1: only pulse energy and frequency can be adjusted, with a short pulse width of 300us; Stage 2: pulse width is adjustable, long pulse width leads to powderization, with a pulse width of 600us or greater; Stage 3: Moses double pulse, Burst triple pulse.

[0004] The mainstream holmium laser lithotripsy has little damage to the normal tissue around the stone, has a good hemostatic effect, can be transmitted by optical fiber, and can be combined with electronic endoscope technology to achieve minimally invasive surgery. However, holmium laser lithotripsy also has certain defects:

[0005] 1. During holmium laser lithotripsy, the stones move greatly and are difficult to control accurately, especially when dealing with the upper ureter and kidney stones. The powderization efficiency is low, the lithotripsy time is long, and other consumables are required.

[0006] 2. Large light spot:

[0007] The light spot is 300μm, and the minimum diameter of the optical fiber is 200μm. After the optical fiber is installed, the energy transmission is attenuated, the optical fiber loss is large, and light leakage is easy to occur, which may damage the endoscope. The optical fiber is relatively thick, which occupies the operating channel, affects the water backflow, and also affects the flexible bending of the front end of the soft endoscope. The light spot is uneven and prone to loss.

[0008] 3. If the mucosa is accidentally burned during lithotripsy, it is easy to cause bleeding and oozing.

[0009] 4. The input power is up to 7kw, which requires a dedicated circuit.

[0010] 5. It generates a lot of heat when working, uses air cooling + water cooling, and makes a lot of noise.

[0011] Based on the defects of holmium laser lithotripsy in the existing technology, namely, large stone displacement during lithotripsy and low lithotripsy efficiency, it is of certain significance to study the lithotripsy effect of lasers of other wavelengths.

[0012] Therefore, a new fiber laser treatment machine needs to be proposed to solve the technical problems in the prior art. Utility Model Content

[0013] The utility model provides an ultra-pulsed thulium fiber laser treatment machine to at least solve the defects of holmium laser lithotripsy in the prior art, namely, the technical problems of large stone displacement and low stone crushing efficiency during lithotripsy. In order to solve the above technical problems, the utility model provides an ultra-pulsed thulium fiber laser treatment machine with a wavelength of 1940nm.

[0014] The utility model provides an ultra-pulse thulium fiber laser therapy machine, which comprises a laser, an electrical device and a coupler. The laser and the coupler are connected via a thulium optical fiber, and the laser and the coupler are respectively connected to the electrical device via a circuit, so that the electrical device controls the operation of the laser and the coupler. The optical fiber is a thulium optical fiber emitted by the laser, and the wavelength of the laser is 1940 nanometers.

[0015] Optionally, the ultra-pulsed thulium fiber laser therapy machine further includes a mainboard, a thulium fiber laser head and a lithotripsy energy transmission optical fiber. The mainboard, the electrical devices and the laser are connected in sequence through circuits. The operation and parameter adjustment of the laser are controlled by the mainboard. The laser and the coupler are connected through the thulium fiber laser head, and one end of the lithotripsy energy transmission optical fiber is connected to the coupler.

[0016] Optionally, the ultra-pulse thulium fiber laser therapy machine further comprises an air cooling device, which is close to the power supply of the ultra-pulse thulium fiber laser therapy machine to dissipate heat for the ultra-pulse thulium fiber laser therapy machine.

[0017] Optionally, the air cooling device includes a fan.

[0018] Optionally, the other end of the lithotripsy energy transmission optical fiber is connected to the treatment end of the ultra-pulsed thulium fiber laser therapy machine.

[0019] Optionally, the laser is located at the bottom layer of the ultra-pulsed thulium fiber laser therapy machine, the coupler is a coupler of 1940 nm laser, the coupler is located at the top layer of the frame of the ultra-pulsed thulium fiber laser therapy machine, the electrical device is located between the laser and the coupler, and the electrical device is placed upside down in the middle layer of the frame of the ultra-pulsed thulium fiber laser therapy machine.

[0020] Optionally, the laser controls the circuit via the electrical device.

[0021] Optionally, the laser includes an LD pump source, an LD indicator light, a fiber combiner, a high reflector, a thulium-doped fiber, a low reflector and a stripper, and the LD pump source, the LD indicator light, the fiber combiner, the high reflector, the thulium-doped fiber, the low reflector and the stripper are connected and transmitted via the optical fiber.

[0022] Optionally, the laser emitted by the above-mentioned laser is connected to the above-mentioned thulium fiber laser head via the above-mentioned optical fiber, passes through the inside of the above-mentioned thulium fiber laser head, and then connected to the above-mentioned lithotripsy energy transmission optical fiber to reach the treatment end of the above-mentioned ultra-pulse thulium fiber laser treatment machine.

[0023] Optionally, the laser is a 1940-nanometer laser, which is composed of an all-fiber resonant cavity consisting of a fiber grating and a thulium-doped fiber, generates a 1940-nanometer high-brightness laser, and uses direct electrical modulation to achieve pulse output.

[0024] The ultra-pulse thulium fiber laser therapy machine uses an internal air cooling device for the 1940nm laser instead of the previous water cooling device, so it is more compact in structure, lighter in weight, and smaller in size. It also avoids the noise caused by large chillers and the need for frequent maintenance and replacement.

[0025] The ultra-pulse thulium fiber laser therapy machine can achieve a peak power of up to 600W at full pulse width and a maximum pulse repetition frequency of up to 10KHZ in terms of equipment parameters. It has higher energy, higher single pulse energy, higher duty cycle, better lithotripsy effect, and the adapted fiber size can be as thin as 50μm, with a smaller spot and higher beam quality. In addition, it has lower noise and better comfort.

[0026] The ultra-pulsed thulium fiber laser therapy machine has better stone crushing and removal effects, shorter operation time, and less risk, bringing patients better surgical treatment effects and less cost.

[0027] For doctors and hospitals, this ultra-pulse thulium fiber laser therapy machine is easier to use, less expensive, more convenient and comfortable to operate, and easier to maintain.

[0028] This patent belongs to the field of medical device technology. In order to solve the problem of urinary stones, an ultra-pulse thulium fiber laser treatment machine is disclosed.

[0029] 1. Under the same parameter settings, thulium laser can ablate more stone volume; lower energy (about 1 / 4 of holmium laser) can be used to achieve the same stone ablation effect.

[0030] 2. Higher degree of pulverization and finer particles. Unlike the pulverization of holmium laser, thulium laser can crush the stone to less than 0.5mm (haze), and directly flush it out of the body during the operation.

[0031] 3. Ultra-low single pulse energy can achieve in-situ lithotripsy and reduce the time of searching for stones during surgery; ultra-high frequency has excellent ability to adsorb small-sized stones. The fiber optic head is away from the mucosa, and the stones are adsorbed around the fiber optic for the safest lithotripsy.

[0032] 4. Thulium laser has a small spot size and can be used with thinner optical fibers. It can reach smaller stone sites, improve the efficiency of lithotripsy under ureteroscopy, and reduce the use of PCNL.

[0033] 5. Thulium laser has a shallow tissue penetration depth (0.1mm) and is safer to use.

[0034] 6. Low power consumption, no need to change the electricity, can be used with ordinary power socket, reducing installation cost, higher energy efficiency, energy saving and electricity saving.

[0035] 7. The laser has a long working life, no energy attenuation, and low noise during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] By reading the detailed description below with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, wherein:

[0037] Figure 1 A schematic diagram of an optional Ho:YAG laser lithotripsy—30-year gold standard provided by the prior art of the utility model;

[0038] Figure 2 A schematic diagram of the principle of an optional ultra-pulsed thulium fiber laser therapy machine provided in an embodiment of the utility model;

[0039] Figure 3 A schematic diagram of the principle of a laser of an optional ultra-pulsed thulium fiber laser therapy machine provided in an embodiment of the utility model;

[0040] Figure 4 A schematic diagram of the frame structure of an optional ultra-pulsed thulium fiber laser therapy machine provided in an embodiment of the utility model;

[0041] Figure 5 A schematic diagram of an optional laser coupler structure provided for an embodiment of the utility model.

[0042] Description of reference numerals:

[0043] Laser 1, electrical device 2, coupler 3, main board 4, thulium fiber laser head 5, stone crushing energy transmission fiber 6, air cooling device 7, 520nm indicator light inlet 31, 1940nm laser light inlet 32, 520nm indicator light or 1940nm laser light outlet 33. DETAILED DESCRIPTION

[0044] The principle and spirit of the present invention will be described below with reference to several exemplary embodiments. It should be understood that these embodiments are provided only to enable those skilled in the art to better understand and implement the present invention, and are not intended to limit the scope of the present invention in any way. On the contrary, these embodiments are provided to make the disclosure of the present application more thorough and complete, and to fully convey the scope of the disclosure of the present application to those skilled in the art.

[0045] In this embodiment, Figures 2 to 5 shown.

[0046] The utility model embodiment provides an ultra-pulsed thulium fiber laser treatment machine, such as Figure 4 As shown, the ultra-pulsed thulium fiber laser therapy machine includes a laser 1, an electrical device 2 and a coupler 3. The laser 1 and the coupler 3 are connected via a thulium optical fiber. The laser 1 and the coupler 3 are respectively connected to the electrical device 2 via a circuit, so that the electrical device 2 controls the operation of the laser 1 and the coupler 3. The optical fiber is the thulium optical fiber emitted by the laser 1, and the wavelength of the laser 1 is 1940 nanometers.

[0047] Further, such as Figure 4 As shown, the ultra-pulsed thulium fiber laser therapy machine also includes a main board 4, a thulium fiber laser head 5 and a lithotripsy energy transmission optical fiber 6. The main board 4, the electrical device 2 and the laser 1 are connected in sequence through circuits. The operation and parameter adjustment of the laser 1 are controlled by the main board 4. The laser 1 is connected to the coupler 3 through the thulium fiber laser head 5, and one end of the lithotripsy energy transmission optical fiber 6 is connected to the coupler 3.

[0048] Furthermore, the ultra-pulse thulium fiber laser therapy machine also includes an air cooling device 7, which is close to the power supply of the ultra-pulse thulium fiber laser therapy machine to dissipate heat for the ultra-pulse thulium fiber laser therapy machine.

[0049] Furthermore, the air cooling device 7 includes a fan.

[0050] Furthermore, the other end of the lithotripsy energy transmission optical fiber 6 is connected to the treatment end of the ultra-pulsed thulium fiber laser treatment machine.

[0051] Further, such as Figure 4 As shown, the laser 1 is located at the bottom layer of the ultra-pulse thulium fiber laser therapy machine, the coupler 3 is a coupler of 1940 nm laser, the coupler 3 is located at the top layer of the frame of the ultra-pulse thulium fiber laser therapy machine, the electrical device 2 is located between the laser 1 and the coupler 3, and the electrical device 2 is placed upside down in the middle layer of the frame of the ultra-pulse thulium fiber laser therapy machine.

[0052] Furthermore, the laser 1 controls the circuit through the electrical device 2 .

[0053] Further, such as Figure 3 As shown, the laser 1 includes an LD pump source, an LD indicator light, a fiber combiner, a high reflector, a thulium-doped fiber, a low reflector and a stripper. The LD pump source, the LD indicator light, the fiber combiner, the high reflector, the thulium-doped fiber, the low reflector and the stripper are connected and transmitted with the optical fiber to each other.

[0054] Furthermore, the laser emitted by the above-mentioned laser 1 is connected to the above-mentioned thulium fiber laser head 5 via the above-mentioned optical fiber, passes through the inside of the above-mentioned thulium fiber laser head 5, and then connects to the above-mentioned lithotripsy energy transmission optical fiber 6 to reach the treatment end of the above-mentioned ultra-pulse thulium fiber laser treatment machine.

[0055] Furthermore, the laser 1 is a 1940-nanometer laser, which has an all-fiber resonant cavity composed of a fiber grating and a thulium-doped fiber, generates a 1940-nanometer high-brightness laser, and uses direct electrical modulation to achieve pulse output.

[0056] Figure 2 This is the schematic diagram of the ultra-pulse thulium fiber laser therapy machine. The fiber laser thulium laser therapy machine includes a main board, a coupler, a thulium fiber laser head, electrical devices, a laser and a lithotripsy energy transmission fiber. The connection between them is that the main board, the laser and the laser power supply are connected through circuits. The operation and parameter adjustment of the laser are controlled by controlling the safety protection system control and the laser power supply. The laser and the thulium fiber laser head and the coupler are connected and operated through optical fibers. The lithotripsy energy transmission fiber and the coupler are connected to the connection of the beam transmission system through the SMA end of the optical fiber.

[0057] Because the air cooling device of the ultra-pulsed thulium fiber laser therapy machine in the embodiment of the utility model replaces the previous water cooling device and adopts an internal air cooling device of the 1940nm laser, it is more compact in structure, lighter in weight, smaller in size, and avoids the noise caused by large chillers and the need for frequent maintenance and replacement.

[0058] Figure 3 yes Figure 2The schematic diagram of the principle of the laser 1 is shown in FIG. 1 . The laser is composed of an LD pump source, an LD indicator light, a fiber combiner, a high reflector, a thulium-doped fiber, a low reflector, and a stripper, and the laser is transmitted between them through an optical fiber connection. The working principle and the reason for producing high-quality 1940nm laser are: the LD pump source emits a 793nm laser, multiple LD pump sources emit a large amount of 793nm laser, the 793nm laser enters the fiber combiner, the fiber combiner combines the multi-channel pump light into one optical fiber, the 793nm laser comes out of the fiber combiner and enters the high reflector, thulium-doped fiber and low reflector in turn, the thulium-doped core is fixed between the two reflectors as a gain medium to form a resonant cavity, thulium belongs to the rare earth element, the rare earth ions absorb the pump light, its electrons are excited, and the ion number is reversed. The reversed particles transition from the high energy level to the low energy level and output the laser, the 793nm laser passes through the thulium-doped fiber and becomes a 1940nm laser, the low reflector reflects the 793nm laser back, and at the same time the 1940nm laser passes through the low reflector and enters the stripper, the stripper filters out the non-1940nm laser, so that the laser out is a high-quality 1940nm laser.

[0059] The ultra-pulsed thulium fiber laser therapy machine uses a semiconductor pump as the pump source to excite the all-fiber resonant cavity composed of fiber gratings and thulium-doped fibers, generate 1940nm high-brightness lasers, and use direct electrical modulation to achieve pulse output. The laser is output from the end of the laser and enters the treatment fiber through a coupling device, ensuring the product has long life, maintenance-free, easy integration, small size, light weight, and high beam quality.

[0060] The rack structure is based on the existing three-layer technology, and the device layout has been readjusted accordingly. The two-layer structure is changed to place the 1940nm laser 1 at the bottom layer, and the 1940nm laser coupler is placed at Figure 4 The top layer of the Thulium laser therapy device frame is shown. Figure 5 yes Figure 4 Detailed description of the coupler 3 of the 1940nm laser in FIG. 1 (partially enlarged schematic diagram), below the coupler frame layer, that is, above the 1940nm laser, Figure 5 The structure diagram of the coupler 3 of the 1940nm laser includes a 520nm indicator light inlet 31, a 1940nm laser light inlet 32, and a 520nm indicator light or 1940nm laser light outlet 33. The internal light path is transmitted through internal designed passages and reflectors. The relevant electrical components are placed in an upside-down manner. The 1940nm laser controls the circuit through electrical components, and the 1940nm laser is connected to the optical fiber through a coupler. The parameters are adjusted through the main control board of the treatment machine, thereby controlling the startup, operation and adjustment of the overall treatment machine.

[0061] The ultra-pulse thulium fiber laser therapy machine replaces the previous water cooling device and adopts an internal air cooling device for the 1940nm laser. Therefore, it is more compact in structure, lighter in weight, and smaller in size. It also avoids the noise caused by large chillers (peak noise 38dB, low noise, high comfort) and the need for frequent maintenance and replacement.

[0062] The equipment parameters can achieve a peak power of up to 600W at full pulse width, a maximum pulse repetition frequency of up to 10KHZ, higher energy, higher single pulse energy, higher duty cycle, better lithotripsy effect, and the adapted optical fiber size can be as thin as 50μm, with a smaller spot and higher beam quality. In addition, the noise is lower and the comfort is better.

[0063] The reason why the ultra-pulsed thulium fiber laser therapy machine can adapt to output optical fibers with smaller diameters is as follows:

[0064] 1. Using high-power thulium ion excitation source: Thulium laser uses high-power thulium ion excitation source, which can achieve high peak power and high pulse repetition frequency. High peak power can provide higher energy output, while high pulse repetition frequency can improve work efficiency.

[0065] 2. Optimize the resonant cavity design: By optimizing the resonant cavity design, higher single pulse energy and higher duty cycle can be achieved. The optimization of the resonant cavity design can improve the energy conversion efficiency and stability of the laser, thereby achieving higher single pulse energy and higher duty cycle.

[0066] 3. Use output fiber with smaller diameter: Thulium laser can use output fiber with smaller diameter, which can achieve smaller output spot. Through the refinement and optimization of optical fiber, smaller spot and higher beam quality can be achieved.

[0067] In summary, thulium lasers achieve these advantages mainly by using a high-power thulium ion excitation source, optimizing the resonant cavity design, and using an output fiber with a smaller diameter.

[0068] The ultra-pulsed thulium fiber laser therapy machine laser 1 improves the pulse power, repetition frequency, energy, duty cycle, fiber adaptation size and beam quality. Reasons:

[0069] 1. Improve pulse power and repetition rate: Thulium lasers use more advanced laser design and optimized pumping technology, which enables the peak power of laser pulses to reach up to 600W and the maximum pulse repetition rate to reach 10kHz (our laser is 2.5K). These technical improvements increase the number of pulses generated per second and the energy of each pulse, improving the overall power output.

[0070] 2. Improve energy and single pulse energy: Thulium lasers achieve higher energy output and single pulse energy by increasing energy storage and amplification efficiency in the laser medium and optimizing the resonant cavity structure of the laser. This means that each pulse carries more energy and can produce a stronger effect on the target.

[0071] 3. Improve the duty cycle: The duty cycle refers to the ratio of the working time of the laser pulse to the cycle time. Thulium laser optimizes the working mode and pumping system of the laser, making the pulse working time relatively long and the cycle time relatively short, thereby improving the duty cycle. A high duty cycle means that the laser pulse interacts with the target more frequently, increasing the processing efficiency and stone crushing effect.

[0072] 4. Smaller fiber size adaptation: Thulium laser uses an optimized optical system and modulation method, which can adapt to smaller fiber sizes, such as 50μm. This makes the light energy more concentrated and the spot smaller, which can produce higher energy density in a finer area and improve the processing accuracy and effect.

[0073] 5. Improve beam quality: Thulium laser can achieve higher beam quality by adopting more advanced optical design and laser technology. High beam quality means that the spatial distribution of the beam is more uniform, the light energy is more concentrated, and the spot is more rounded, thereby improving energy transmission efficiency and processing quality.

[0074] In short, thulium lasers have comprehensively improved pulse power, repetition frequency, energy, duty cycle, fiber adaptation size and beam quality by optimizing laser design, pumping technology, optical system and modulation method.

[0075] The ultra-pulsed thulium fiber laser therapy machine has better stone crushing and removal effects, shorter operation time, and less risk, bringing patients better surgical treatment effects and less cost.

[0076] For doctors and hospitals, this ultra-pulse thulium fiber laser therapy machine is easier to use, less expensive, more convenient and comfortable to operate, and easier to maintain.

[0077] It should be noted that, although several units / modules or subunits / modules of the device are mentioned in the above detailed description, this division is merely exemplary and not mandatory. In fact, according to an embodiment of the present invention, the features and functions of two or more units / modules described above may be embodied in one unit / module. Conversely, the features and functions of one unit / module described above may be further divided into multiple units / modules to be embodied.

[0078] Although the spirit and principle of the present invention have been described with reference to several specific embodiments, it should be understood that the present invention is not limited to the disclosed specific embodiments, and the division of various aspects does not mean that the features in these aspects cannot be combined to benefit, and such division is only for the convenience of expression. The present invention is intended to cover various modifications and equivalent arrangements included in the spirit and scope of the attached claims.

Claims

1. An ultra-pulsed thulium fiber laser therapy machine, characterized in that: The ultra-pulsed thulium fiber laser therapy machine comprises a laser (1), an electrical device (2) and a coupler (3); the laser (1) and the coupler (3) are connected via a thulium optical fiber; the laser (1) and the coupler (3) are respectively connected to the electrical device (2) via a circuit, so that the electrical device (2) controls the operation of the laser (1) and the coupler (3); the optical fiber is a thulium optical fiber emitted by the laser (1); and the wavelength of the laser (1) is 1940 nanometers.

2. The ultra-pulsed thulium fiber laser therapy device according to claim 1, characterized in that: The ultra-pulsed thulium fiber laser treatment machine also includes a main board (4), a thulium fiber laser head (5) and a lithotripsy energy transmission optical fiber (6); the main board (4), the electrical device (2) and the laser (1) are connected in sequence through circuits; the operation and parameter adjustment of the laser (1) are controlled by the main board (4); the laser (1) and the coupler (3) are connected through the thulium fiber laser head (5); and one end of the lithotripsy energy transmission optical fiber (6) is connected to the coupler (3).

3. The ultra-pulsed thulium fiber laser therapy device according to claim 1, characterized in that: The ultra-pulse thulium fiber laser therapy machine also comprises an air cooling device (7), wherein the air cooling device (7) is close to the power supply of the ultra-pulse thulium fiber laser therapy machine and dissipates heat for the ultra-pulse thulium fiber laser therapy machine.

4. The ultra-pulsed thulium fiber laser therapy device according to claim 3, characterized in that: The air cooling device (7) comprises a fan.

5. The ultra-pulsed thulium fiber laser therapy device according to claim 2, characterized in that: The other end of the lithotripsy energy transmission optical fiber (6) is connected to the treatment end of the ultra-pulse thulium optical fiber laser treatment machine.

6. The ultra-pulsed thulium fiber laser therapy device according to claim 1, characterized in that: The laser (1) is located at the bottom layer of the ultra-pulse thulium fiber laser therapy machine, the coupler (3) is a coupler of 1940 nanometer laser, the coupler (3) is located at the top layer of the frame of the ultra-pulse thulium fiber laser therapy machine, the electrical device (2) is located between the laser (1) and the coupler (3), and the electrical device (2) is placed in an upside-down manner on the middle layer of the frame of the ultra-pulse thulium fiber laser therapy machine.

7. The ultra-pulsed thulium fiber laser therapy device according to claim 1, characterized in that: The laser (1) controls the circuit via the electrical device (2).

8. The ultra-pulsed thulium fiber laser therapy device according to claim 1, characterized in that: The laser (1) comprises an LD pump source, an LD indicator light, an optical fiber combiner, a high reflector, a thulium-doped optical fiber, a low reflector and a stripper, wherein the LD pump source, the LD indicator light, the optical fiber combiner, the high reflector, the thulium-doped optical fiber, the low reflector and the stripper are connected and transmitted with the optical fiber.

9. The ultra-pulsed thulium fiber laser treatment device according to claim 2, characterized in that: The laser light emitted by the laser (1) is connected to the thulium fiber laser head (5) via the optical fiber, passes through the interior of the thulium fiber laser head (5), and then is connected to the lithotripsy energy transmission optical fiber (6) to reach the treatment end of the ultra-pulse thulium fiber laser treatment machine.

10. The ultra-pulsed thulium fiber laser treatment device according to claim 1, characterized in that: The laser (1) is a 1940 nanometer laser, which has an all-fiber resonant cavity composed of a fiber grating and a thulium-doped fiber, generates 1940 nanometer high-brightness laser, and realizes pulse output by direct electrical modulation.

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