Method and device for laser lithotripsy

Abstract

The invention provides a method and device for laser lithotripsy, the device for laser lithotripsy comprises a laser emission assembly, the laser emission assembly comprises a mounting rack, the mounting rack is internally and detachably connected with the laser emission assembly, the mounting rack is internally provided with a heat dissipation assembly for cooling the laser emission assembly, and the mounting rack is internally provided with a power supply; a water tank is arranged in the mounting frame, the laser emitting assembly comprises a mounting shell, an emitting source, a pumping source, a pumping beam combiner, a fiber bragg grating, a holmium laser optical core and a fiber laser output head, and the laser emitting assembly integrates key components such as the pumping source, the pumping beam combiner and the fiber bragg grating which are sequentially connected through optical fibers. The structure of the laser system is simplified, the complexity of beam combination of a plurality of laser resonant cavities is reduced, and the laser system has the advantages of compact structure and high flexibility.

Description

Technical Field

[0001] The present invention relates to the technical field of laser instruments, and particularly relates to a method and device for laser lithotripsy. Background Art

[0002] Currently, Ho:YAG lasers are commonly used in clinical practice for lithotripsy. The principle is to use an endoscope to introduce holmium laser into the lesion site to cause "surface blasting" of the stone. Ho:YAG laser lithotripsy is currently the gold standard for laser lithotripsy surgery.

[0003] The laser is the core part of the laser lithotripter. Currently, the most widely used and clinically effective laser lithotripter uses holmium laser. Its emission wavelength is about 2100nm, which causes little damage to the normal tissues around the stone, has good hemostatic effect, and can be transmitted through an optical fiber, cooperating with an endoscope to achieve the purpose of minimally invasive treatment. However, a large number of actual cases show that there are still certain problems to be solved in solid holmium laser lithotripsy. In the prior art, holmium laser is used to break up kidney stones, and the broken stones are removed through a stone retrieval basket. This method can remove most of the stones. However, after the stones are broken up, small-sized gravel will be formed, and its particle size is often below 2mm, which cannot be removed by conventional technical means, resulting in the remaining of stones in the renal pelvis and calyces. And flushing with cleaning fluid is likely to cause the escape of stones, resulting in the technical defect of incomplete stone removal.

[0004] Therefore, it is necessary to provide a new method and device for laser lithotripsy to solve the above technical problems. Summary of the Invention

[0005] To solve the above technical problems, the present invention provides a method and device for laser lithotripsy.

[0006] The device for laser lithotripsy provided by the present invention includes: a mounting frame, a laser emission component is detachably connected inside the mounting frame, a heat dissipation component for cooling the laser emission component is installed inside the mounting frame, a power supply is installed inside the mounting frame, and a water tank is provided inside the mounting frame;

[0007] The laser emission component includes a mounting shell, a light emitting source, a pump source, a pump beam combiner, a fiber Bragg grating, a holmium laser core, and a fiber laser output head;

[0008] The fiber laser output head includes a housing. Inside the housing cavity, there are successively arranged from inside to outside a holmium laser core, a water supply pipe, a plurality of guiding components, and a plurality of collection cavities. One end of each of the plurality of collection cavities penetrates into the water tank, and a one-way valve for limiting the gravel is provided inside the collection cavity. One end of the holmium laser core is provided with an endoscope;

[0009] The guiding component includes a variable-frequency motor. The output end of the variable-frequency motor is fixedly connected with a fixed disk. A plurality of first magnets are fixedly connected in the fixed disk. A guiding plate is arranged on one side of the fixed disk. An impeller is arranged in the guiding plate. One side of the impeller is fixedly connected with the fixed disk, and the other side of the impeller is movably connected with the inner side wall of the guiding plate. A receiving plate is fixedly connected to one side of the guiding plate. An eddy current generator is arranged on one side of the receiving plate. A plurality of second magnets are arranged in the eddy current generator. The plurality of second magnets are arranged opposite to the first magnets. A conduit one and a conduit two are inserted through the guiding plate. The conduit one sequentially passes through the side wall of the guiding plate, the receiving plate, and the eddy current generator. One end of the conduit two is inserted into the guiding plate, and the other end of the conduit two is inserted into the collection cavity.

[0010] Preferably, the pump source, the pump combiner, the fiber Bragg grating, the holmium laser core, the cladding light stripper, and the fiber laser output head are sequentially connected by optical fibers. The mounting shell, the emission source, the pump source, the pump combiner, the fiber Bragg grating, the holmium laser core, and the fiber laser output head are all installed in the mounting shell. The pump source is connected to the pump end of the pump combiner.

[0011] Preferably, the heat dissipation component is detachably connected to the bottom layer of the mounting frame. The heat dissipation component includes a water-cooling component. The water-cooling component is opposite to the lower end face of the mounting shell. An air-cooling component for dissipating heat from the water-cooling component is also detachably connected to one side of the water-cooling component.

[0012] Preferably, a display screen is installed on the upper end face of the mounting frame. A foot switch is movably connected to the bottom end of the mounting frame. A control component is installed on one side of the mounting frame.

[0013] A usage method applicable to the above-mentioned device for laser lithotripsy includes the following steps:

[0014] S1. Detect the integrity of the device, connect the power supply and start the control system to turn on the device;

[0015] S2. Set the pump source and adjust the laser parameters;

[0016] S3. Start the pump source, adjust the fiber Bragg grating, perform laser pre-output, and adjust the laser intensity according to the strength of the stone to be broken;

[0017] S4. Locate the stone and deliver the optical fiber through the urethra to the stone. Step on the foot switch to perform lithotripsy, and observe the feedback on the display screen to ensure that the laser accurately acts on the stone, and start the heat dissipation component to dissipate heat from the laser emission component;

[0018] S5. After completing laser lithotripsy, stop stepping on the foot switch and turn off the pump source. Stop the heat dissipation component after the laser emission component is completely cooled;

[0019] S6. Perform postoperative detection on the device and record the usage situation of this time.

[0020] Preferably, the specific operations for connecting the device in step S1 include the following steps:

[0021] S11. Coating stripping: Use tools to strip the coating layer of the optical fiber.

[0022] S12. Optical fiber cleaning: After stripping the coating layer, keep the stripped surface clean, and use lint-free paper dipped in an appropriate amount of alcohol to wipe it to avoid secondary contamination.

[0023] S13. Optical fiber cutting: Control the cutting angle and use a large-core diameter cutting knife to cut the optical fiber.

[0024] S14. Optical fiber fusion splicing: The fusion splicing steps include cleaning discharge, rough alignment of the optical fiber, fine alignment, pre-fusion and main fusion of the optical fiber, as well as re-discharge and fusion splicing quality judgment, and then use a fusion splicer for fusion splicing.

[0025] S15. Re-coating: The re-coating after fusion splicing improves the mechanical strength of the melting point and prevents contamination. Use a coater for coating, and the process includes fixture cleaning, glue injection, and ultraviolet curing.

[0026] S16. Fusion splicing quality assessment: Preliminarily evaluate the fusion splicing quality according to the fusion splicing image and data, observe the melting point temperature through light transmission, and calculate the optical coupling efficiency.

[0027] Preferably, the specific operations for performing laser lithotripsy in step S4 include the following steps:

[0028] S41. Start the endoscope and make the holmium laser core face the stone according to the feedback of the display screen.

[0029] S42. Step on the foot switch to make the holmium laser core emit a laser beam to break the stone.

[0030] S43. Start the water supply pipe and multiple variable-frequency motors, so that the water supply pipe cools the stone, and at the same time drive the eddy current generator through multiple variable-frequency motors to assist in cooling the stone and collecting the crushed stones.

[0031] Preferably, when performing laser lithotripsy in step S4, a continuous wave mode and a quasi-continuous wave mode can be adopted.

[0032] Compared with the related technology, the method and device for laser lithotripsy provided by the present invention have the following beneficial effects:

[0033] 1. The present invention provides a method and device for laser lithotripsy. In specific implementation, through the alternating forward and reverse operation of multiple variable-frequency motor rotors, the eddy current generator is switched between adsorbing lithotripsy and assisting the water supply pipe to cool the calculus, so as to avoid the blockage of the eddy current generator by lithotripsy during the process of adsorbing and removing lithotripsy in the patient's body, improve the efficiency of adsorbing and collecting lithotripsy, and also avoid the replacement of the laser emission component due to the blockage of the eddy current generator during the operation process, reduce the incidence of accidents during the operation process. At the same time, the eddy current generated by the eddy current generator causes the lithotripsy to converge, avoid the escape of small-particle lithotripsy, improve the collection efficiency of lithotripsy, and collect the lithotripsy more thoroughly;

[0034] 2. The laser emission component integrates key components such as a pump source, a pump beam combiner, and a fiber Bragg grating, and is connected in sequence through optical fibers, which simplifies the structure of the laser system, reduces the complexity of the beam combination of multiple laser resonators, and has the advantages of compact structure and high flexibility;

[0035] 3. When the first magnet drives the second magnet to rotate, since the magnetic properties of the relative sides of the first magnet and the second magnet are the same, a repulsive force is generated between the first magnet and the second magnet, thereby avoiding the extrusion force between the bearing plate and the guide plate and wear during the rotation process, and extending the service life of the device. Description of the Drawings

[0036] Figure 1 Schematic diagram of the structure of the laser emission component of the device for laser lithotripsy provided by the present invention;

[0037] Figure 2 Schematic diagram of the overall structure of the device for laser lithotripsy provided by the present invention;

[0038] Figure 3 Schematic diagram of the cross-sectional structure of the laser output component provided by the present invention;

[0039] Figure 4 Side view of the laser output component provided by the present invention;

[0040] Figure 5 is Figure 3 Enlarged view of the place marked as a shown;

[0041] Reference numerals in the figure: 1, mounting bracket; 2, laser emission component; 21, mounting shell; 22, emission source; 23, pump source; 24, pump combiner; 25, fiber Bragg grating; 26, holmium laser core; 3, fiber laser output head; 31, housing; 32, water supply pipe; 33, guiding component; 330, variable-frequency motor; 331, fixed disk; 332, first magnet; 333, guiding plate; 334, impeller; 335, receiving plate; 336, eddy current generator; 337, second magnet; 338, conduit 1; 339, conduit 2; 34, collection chamber; 35, endoscope; 4, heat dissipation component; 5, power supply; 6, water tank; 7, control component; 8, display screen; 9, foot switch. Detailed implementation manner

[0042] The present invention will be further described below in conjunction with the accompanying drawings and the implementation manner.

[0043] Please refer to Figure 1 — Figure 5 , wherein, Figure 1 is a schematic structural diagram of the laser emission component of the device for laser lithotripsy provided by the present invention; Figure 2 is a schematic overall structural diagram of the device for laser lithotripsy provided by the present invention; Figure 3 is a schematic cross-sectional structural diagram of the laser output component provided by the present invention; Figure 4 is a side view of the laser output component provided by the present invention; Figure 5 is Figure 3 the enlarged view at position a shown in

[0044] In the specific implementation process, a device for laser lithotripsy has a structure as shown in Figure 1 — Figure 5 , and includes: a mounting bracket 1, a laser emission component 2 is detachably connected inside the mounting bracket 1, a heat dissipation component 4 for cooling the laser emission component 2 is installed inside the mounting bracket 1, a power supply 5 is installed inside the mounting bracket 1, and a water tank 6 is provided inside the mounting bracket 1;

[0045] The laser emission component 2 includes a mounting shell 21, an emission source 22, a pump source 23, a pump combiner 24, a fiber Bragg grating 25, a holmium laser core 26, and a fiber laser output head 3;

[0046] The fiber laser output head 3 includes a housing 31, and inside the inner cavity of the housing 31, a holmium laser core 26, a water supply pipe 32, a plurality of guiding components 33, and a plurality of collection chambers 34 are sequentially arranged from inside to outside. One ends of the plurality of collection chambers 34 all penetrate into the water tank 6, and an endoscope 35 is provided at one end of the holmium laser core 26;

[0047] The guiding component 33 includes a variable-frequency motor 330. A fixed disk 331 is fixedly connected to the output end of the variable-frequency motor 330. A plurality of first magnets 332 are fixedly connected inside the fixed disk 331. A guiding plate 333 is provided on one side of the fixed disk 331. An impeller 334 is provided inside the guiding plate 333. The impeller 334 is arranged in a spiral shape. One side of the impeller 334 is fixedly connected to the fixed disk 331, and the other side of the impeller 334 is movably connected to the inner side wall of the guiding plate 333. A receiving plate 335 is fixedly connected to one side of the guiding plate 333. An eddy current generator 336 is provided on one side of the receiving plate 335. A plurality of second magnets 337 are provided inside the eddy current generator 336. The plurality of second magnets 337 are arranged opposite to the first magnets 332, and the magnetic poles on the opposite sides of the first magnets 332 and the second magnets 337 are the same. A conduit 1 338 and a conduit 2 339 are inserted into the guiding plate 333. The conduit 1 338 sequentially passes through the side wall of the guiding plate 333, the receiving plate 335, and the eddy current generator 336. One end of the conduit 2 339 is inserted into the guiding plate 333, and the other end of the conduit 2 339 is inserted into the collection chamber 34;

[0048] It should be noted that the pump source 23 of the seed laser is two 2W laser diodes (LDs), with an output center wavelength of 2100 nm (25 °C), and the core / cladding diameter of the output pigtail is 200 / 400 μm; the gain fiber model is LMA-TDF-20 / 400, with a core / inner cladding diameter of 20 / 400 μm, a numerical aperture of 0.06 / 0.46, a pump absorption coefficient of 3.5 dB / m at 976 nm for the TDF, and a total length of 5 m. The end face coating (TDF) is coiled on a water-cooled plate engraved with a spiral optical fiber groove; the combiner uses a (2 + 1) × 1 multimode pump signal combiner. The core / cladding diameter of the optical fiber at the input end of the laser diode is 105 / 125 μm, and the core / cladding diameter connected to the fiber of the HR-FBG end is 20 / 400 μm;

[0049] In a high-power double-clad fiber laser, the CPS is in a core position. Its main function is to strip the residual pump light in the optical fiber and the signal light leaked into the cladding due to the effects of stimulated spontaneous emission (ASE), non-ideal splicing, and optical fiber bending, and convert it into heat energy. Therefore, it can effectively prevent the degradation of the laser beam quality and also effectively prevent the damage of the laser. The stripper model adopted by the seed source laser is CPS-20-LD400-P23-1m, with a stripping power of 20 W, an optical fiber cladding diameter of 400 μm, and a core diameter of 20 μm;

[0050] According to the Fresnel reflection principle, when the laser enters the air through the optical fiber, there will be a 4% reflection loss. This loss not only affects the laser efficiency but also poses a potential danger to the laser and the operator under high laser power conditions. By using optical fiber output heads such as EFC and fusing them with an appropriately sized quartz end cap, and coating an antireflection film on the radiation surface of the end cap, the reflection loss can be significantly reduced and the laser efficiency can be improved.

[0051] The pump wavelength of the pump source 23 is greater than or equal to 1150 nm and less than or equal to 1200 nm; the diameter of the holmium laser core 26 is 20 μm.

[0052] The heat dissipation component 4 is detachably connected to the bottom layer of the mounting frame 1, and the heat dissipation component 4 includes a water-cooling member. The water-cooling member is directly opposite to the lower end face of the mounting shell 21, and an air-cooling member for dissipating heat from the water-cooling member is also detachably connected to one side of the water-cooling member;

[0053] It should be noted that if the output power of the fiber laser is low, natural heat dissipation can meet the requirements and no other heat dissipation system is needed. However, in the case of high power, the laser will generate heat due to high power and cause damage to the entire system. Therefore, a heat dissipation device must be used. The most critical aspect of a high-power fiber laser is the heat dissipation of the gain fiber and the melting point. Generally, grooves and heat sinks are required. There is an energy conversion between the pump light and the laser in the gain fiber, resulting in much more heat generation in the gain fiber than in other passive fiber devices. The gain fiber is embedded in a spiral groove metal heat sink, and at the same time, thermal conductive silicone is added between the gain fiber and the groove to increase the heat dissipation area. When the fiber temperature is relatively high, it is combined with water cooling and air cooling to take away the heat transferred from the metal heat sink;

[0054] The end face coating (TDF) is wound and fixed on the spiral runway of the aluminum water-cooling plate in the way of "inner circle in and outer circle out" with aluminum tape. The minimum winding diameter is 6 cm. In addition, the fusion joints at both ends of the TDF and optical devices such as the pump combiner 24 are also installed at the corresponding positions of the water-cooling plate for cooling. At the same time, a water chiller is used for more thorough heat dissipation, and the water-cooling temperature is set at 25 °C.

[0055] A display screen 8 is installed on the upper end face of the mounting frame 1, a foot switch 9 is movably connected to the bottom end of the mounting frame 1, and a control component 7 is installed on one side of the mounting frame 1.

[0056] The usage method of a device for laser lithotripsy applicable to the above includes the following steps:

[0057] S1. Detect the integrity of the device, connect the power supply 5 and start the control system to turn on the device;

[0058] S2. Set the pump source 23 and adjust the laser parameters;

[0059] S3. Start the pump source 23, adjust the fiber Bragg grating 25, perform laser pre-output, and adjust the laser intensity according to the strength of the stone to be broken.

[0060] S4. Locate the stone and deliver the optical fiber through the urethra to the stone. Step on the foot switch 9 to break the stone, and observe the feedback on the display screen 8 to ensure that the laser acts accurately on the stone, and start the heat dissipation component 4 to dissipate heat from the laser emission component 2.

[0061] S5. After completing the laser lithotripsy, stop stepping on the foot switch 9 and turn off the pump source 23. Stop the heat dissipation component 4 after the laser emission component 2 has completely cooled down.

[0062] S6. Perform postoperative detection on the device and analyze and record the usage situation of this time.

[0063] It should be noted that when installing the device, the emission source 22, the pump source 23, the pump combiner 24, the fiber Bragg grating 25, the holmium laser core 26, and the fiber laser output head 3 need to be fused in sequence through optical fibers. The fusion steps are as follows:

[0064] Coating stripping: Use tools such as fiber stripping pliers, blades for mechanical stripping, or special thermal strippers to strip the coating; for large-core optical fibers, usually use a fiber thermal stripper and strip according to the indicator light instructions to ensure that the side surface of the optical fiber is flat and uniform.

[0065] Optical fiber cleaning: After stripping the coating, keep the stripped surface clean, and use a lint-free paper dipped in an appropriate amount of alcohol to wipe it to avoid secondary contamination.

[0066] Optical fiber cutting: Control the cutting angle, use a large-core cutting knife to cut the optical fiber, ensure that the cutting end face is smooth, the cutting edge is as small as possible, and there is no burr.

[0067] Optical fiber fusion: The fusion steps include cleaning discharge, rough alignment of the optical fiber, fine alignment, pre-fusion and main fusion of the optical fiber, and re-discharge and fusion quality judgment. Use a Fujikura series fusion splicer for fusion, such as small fusion splicers like 100P or 100M. Pay special attention to unequal-diameter fusion. For example, in the fusion of 250 - 400 μm, use 100P for fusion to ensure that there is no cladding deformation.

[0068] Re-coating: The re-coating after fusion improves the mechanical strength of the melting point and prevents contamination. Use a Fujikura series FSR-05 coater for coating. The process includes fixture cleaning, glue injection, and ultraviolet curing.

[0069] Fusion quality assessment: Preliminarily evaluate the fusion quality according to the fusion image and data, observe the melting point temperature through light transmission, and calculate the optical coupling efficiency.

[0070] The specific operations for performing laser lithotripsy in step S4 include the following steps:

[0071] S41. Start the endoscope 35, and align the holmium laser core 26 with the stone according to the feedback of the display screen 8;

[0072] S42. Step on the foot switch 9 to make the holmium laser core 26 emit a laser beam to crush the stone;

[0073] S43. Start the water supply pipe 32 and multiple variable-frequency motors 330, so that the water supply pipe 32 cools the stone, and at the same time, drive the eddy current generator 336 through the multiple variable-frequency motors 330 to assist in cooling the stone and collecting the crushed stones;

[0074] It should be noted that first, the operator locates the holmium laser core 26 through the endoscope 35 and the display screen 8 to align it with the stone. Then, start the water supply pipe 32 and the holmium laser core 26. When the holmium laser core 26 crushes the stone, the water supply pipe 32 plays a role in cooling the stone to avoid affecting the patient due to the increase in the stone temperature. After that, start the two variable-frequency motors 330, so that the output ends of the two variable-frequency motors 330 drive the two impellers 334 to rotate in opposite directions. Since the impellers 334 are arranged in a spiral shape, one of the impellers 334 discharges the liquid in the collection chamber 34 through the conduit 338, assisting the water supply pipe 32 to cool the stone and at the same time flushing away the crushed stones blocking the opening of the eddy current generator 336 to avoid affecting the collection efficiency of the crushed stones due to the blockage of the eddy current generator 336. Since the rotation directions of the two impellers 334 are opposite, the other impeller 334 will not discharge the liquid in the collection chamber 34, and the crushed stones collected by the eddy current generator 336 will enter the collection chamber 34 through the conduit 338 and the conduit 339 in sequence. At this time, the one-way valve in the collection chamber 34 will block the crushed stones to avoid the crushed stones returning to the patient's body when the impeller 334 rotates in reverse. At the same time, the variable-frequency motor 330 drives the second magnet 337 to rotate through the first magnet 332. Since the magnetic poles on the opposite sides of the first magnet 332 and the second magnet 337 are the same, when the variable-frequency motor 330 drives the fixing plate to rotate, at this time, the first magnet 332 rotates with the fixing plate. And because the magnetic poles on the opposite sides of the second magnet 337 and the first magnet 332 are the same, when the first magnet 332 rotates, it applies a magnetic force to the second magnet 337, causing the second magnet 337 to rotate in the direction opposite to the rotation direction of the first magnet 332, thereby avoiding wearing the receiving plate 335.

[0075] When performing laser lithotripsy in step S4, the continuous wave mode and the quasi-continuous wave mode can be adopted.

[0076] The analysis and recording of data in step S6 include the study of the stability of the seed source laser. Specifically, the output stability of the Ho:YAG laser is determined by recording the fluctuations when the maximum output power W is reached within a specific time period. Based on the deviation analysis, through

[0077]

[0078] the stability degree of this laser during operation can be judged. Among them, represents the output power of the i-th time, and the average value of the output power is P. Substitute the data into the formula to obtain the stability of this laser. Since the output power of the Ho:YAG laser is affected by the output power fluctuations of the laser diode and the fiber material itself, generally speaking, this Ho:YAG laser has relatively good stability.

[0079] The circuits and controls involved in the present invention are all prior arts and will not be elaborated here.

[0080] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A device for laser lithotripsy, characterized in that: The invention comprises a mounting frame (1), a laser emitting assembly (2) is detachably connected to the mounting frame (1), a heat dissipation assembly (4) for cooling the laser emitting assembly (2) is installed in the mounting frame (1), a power supply (5) is installed in the mounting frame (1), and a water tank (6) is provided in the mounting frame (1); The laser emission assembly (2) comprises a mounting shell (21), an emission source (22), a pump source (23), a pump combiner (24), a fiber Bragg grating (25), a holmium laser core (26), and a fiber laser output head (3); The optical fiber laser output head (3) comprises a shell (31), wherein the inner cavity of the shell (31) is provided with a holmium laser core (26), a water supply pipe (32), a plurality of guide components (33) and a plurality of collecting cavities (34) in sequence from the inside to the outside, wherein one end of each of the plurality of collecting cavities (34) is inserted into the water tank (6), and an endoscope (35) is provided at one end of the holmium laser core (26); The guide assembly (33) comprises a variable frequency motor (330), the output end of the variable frequency motor (330) is fixedly connected to a fixed disk (331), a plurality of first magnets (332) are fixedly connected inside the fixed disk (331), a guide plate (333) is provided on one side of the fixed disk (331), an impeller (334) is provided inside the guide plate (333), one side of the impeller (334) is fixedly connected to the fixed disk (331), the other side of the impeller (334) is movably connected to the inner side wall of the guide plate (333), one side of the guide plate (333) is fixedly connected to a receiving plate (335), the receiving plate (335) is fixedly connected to the inner side wall of the guide plate (333), and the receiving plate (335) is fixedly connected to the inner side wall of the guide plate (333). A vortex generator (336) is provided on one side of the plate (335), and a plurality of second magnets (337) are provided in the vortex generator (336). The plurality of second magnets (337) are arranged opposite to the first magnet (332). A first conduit (338) and a second conduit (339) are inserted into the guide plate (333). The first conduit (338) passes through the side wall of the guide plate (333), the receiving plate (335), and the vortex generator (336) in sequence. One end of the second conduit (339) is inserted into the guide plate (333), and the other end of the second conduit (339) is inserted into the collecting chamber (34).

2. The laser lithotripsy device according to claim 1, characterized in that: The pump source (23), the pump combiner (24), the fiber Bragg grating (25), the holmium laser core (26), the cladding light stripper () and the fiber laser output head (3) are all connected in sequence through optical fibers, and the mounting shell (21), the emission source (22), the pump source (23), the pump combiner (24), the fiber Bragg grating (25), the holmium laser core (26) () and the fiber laser output head (3) are all installed in the mounting shell (21), and the pump source (23) is connected to the pump end of the pump combiner (24).

3. The laser lithotripsy device according to claim 2, characterized in that: The heat dissipation component (4) is detachably connected to the bottom layer of the mounting frame (1), and the heat dissipation component (4) comprises a water-cooling component, the water-cooling component is directly opposite to the lower end surface of the mounting shell (21), and one side of the water-cooling component is detachably connected to an air-cooling component for dissipating heat from the water-cooling component.

4. The laser lithotripsy device according to claim 3, characterized in that: The upper end surface of the mounting frame (1) is provided with a display screen (8), the bottom end of the mounting frame (1) is movably connected with a foot switch (9), and one side of the mounting frame (1) is provided with a control assembly (7).

5. A method for using a laser lithotripsy device according to any one of claims 1 to 4, characterized in that: The method comprises the following steps: S1, connect the device and check the integrity of the device, connect the power supply (5) and start the control system to turn on the device; S2, setting the pump source (23) and adjusting the laser parameters; S3, starting the pump source (23), adjusting the fiber Bragg grating (25), pre-outputting the laser, and adjusting the laser intensity according to the intensity of the stone to be broken; S4, locate the stone and deliver the fiber laser output head (3) to the stone through the urethra, step on the foot switch (9) to crush the stone, observe the feedback on the display screen (8) to ensure that the laser acts accurately on the stone, and start the heat dissipation component (4) to dissipate heat from the laser emission component (2); S5. After laser lithotripsy is completed, the foot switch (9) is stopped and the pump source (23) is turned off, and the heat dissipation component (4) is stopped after the laser emission component (2) is completely cooled; S6. Perform postoperative testing on the device and record the usage.

6. The method and device for laser lithotripsy according to claim 5, characterized in that: The specific operation of connecting the device in step S1 includes the following steps: S11, coating stripping: use tools to strip the coating of the optical fiber; S12. Fiber cleaning: After stripping the coating, keep the stripped surface clean and wipe it with a dust-free paper dipped in an appropriate amount of alcohol to avoid secondary contamination; S13, Fiber cutting: Control the cutting angle and use a large core diameter cutting knife to cut the fiber; S14, fiber fusion splicing: The splicing steps include clean discharge, rough fiber alignment, fine alignment, fiber pre-melting and main melting, as well as re-discharge and splicing quality judgment, and then a splicing machine is used for splicing. S15, re-coating: Re-coating after welding improves the mechanical strength of the melting point and prevents contamination. Coating is performed using a coating machine. The process includes fixture cleaning, glue injection and UV curing. S16. Welding quality assessment: Preliminary assessment of welding quality based on welding images and data, observation of melting point temperature through light and calculation of light coupling efficiency.

7. The method and device for laser lithotripsy according to claim 6, characterized in that: The specific operation of laser lithotripsy in step S4 includes the following steps: S41, starting the endoscope (35), and making the holmium laser core (26) face the stone according to the feedback from the display screen (8); S42, stepping on the foot switch (9) to cause the holmium laser core (26) to emit a laser beam to break up the stones; S43, starting the water supply pipe (32) and the plurality of variable frequency motors (330), so that the water supply pipe (32) cools the stones, and at the same time, the plurality of variable frequency motors (330) drive the vortex generator (336) to assist in cooling the stones and collect the crushed stones.

8. The method and device for laser lithotripsy according to claim 7, characterized in that: When performing laser lithotripsy in step S4, a continuous wave mode and a quasi-continuous wave mode can be used.

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