High power four-chamber holmium laser therapy machine

Abstract

The present invention relates to the technical field of medical equipment, in particular to a high-power four-cavity holmium laser therapeutic machine, comprising a machine body, wherein an output optical fiber socket and a display screen are arranged on the front of the machine body, a laser power supply, a holmium laser generator and a water cooling mechanism are arranged inside the machine body, the holmium laser generator comprises a shell, and both left and right sides of the inside of the shell are provided with a total reflection mirror assembly, a Q switch assembly, an aperture assembly and an output mirror assembly, and the total reflection mirror assembly, the Q switch assembly, the aperture assembly and the output mirror assembly located on both sides of the inside of the shell are arranged at intervals in a straight line direction; the present invention has four laser cavities, wherein two laser cavities facing the Q switch assembly are in a working state, and the other two laser cavities are in a standby state, and once a laser cavity fails, the standby laser cavity can be switched in time, thereby helping to ensure the stability and safety of the surgical process.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to a high-power four-cavity holmium laser therapeutic machine. Background Art

[0002] Holmium lasers usually use holmium-doped yttrium aluminum garnet (NAG) crystals as laser media. When holmium ions are excited by external energy (such as xenon lamps or diode pumps), holmium ions transition from the ground state to the excited state. In the excited state, holmium ions undergo non-radiative transitions and eventually reach a metastable energy level. When holmium ions transition from the metastable energy level back to the ground state, energy is released to form a laser. The wavelength of holmium lasers is 2.1 microns. Lasers of this wavelength have a shallow penetration depth in tissues and are mainly absorbed by water molecules. Therefore, the range of action of holmium lasers in tissues is very precise, and micron-level cutting and vaporization can be achieved. The high energy density and precise control of holmium lasers make them widely used in the medical field, especially in minimally invasive surgeries in the fields of urology, dermatology, ophthalmology, and otolaryngology.

[0003] Medical holmium laser therapy machine is one of the equipment in the field of laser therapy machinery, mainly composed of holmium laser, laser power supply, water circulation cooling system, electrical control system, laser coupling transmission system and machine body. In the actual application of holmium laser therapy machine, an external optical fiber is connected, and then after seeing the stone through cystoscope, ureteroscope or percutaneous nephroscope, it is only necessary to directly contact the optical fiber with the stone surface to stimulate the laser. Holmium laser has excellent lithotripsy ability and can efficiently crush urinary stones of various compositions.

[0004] Nowadays, most holmium laser therapy machines are single-cavity or dual-cavity, that is, they only have one or two laser cavities. Among them, when a single-cavity holmium laser therapy machine is working, on the one hand, the power is small and the frequency is low. On the other hand, once the laser cavity fails, the operation will be interrupted, which seriously affects the doctor's surgical effect. Although the operating frequency and power of the dual-cavity holmium laser therapy machine have been improved, once one of the laser cavities fails, it will still cause the dual cavity to become a single cavity, which will also bring hidden dangers to the surgical process to a certain extent. For this reason, we proposed a high-power four-cavity holmium laser therapy machine to solve the above disadvantages well. Summary of the invention

[0005] The purpose of the present invention is to provide a high-power four-cavity holmium laser therapy machine to solve the problems raised in the above-mentioned background technology.

[0006] The present invention is achieved through the following technical solutions:

[0007] A high-power four-cavity holmium laser therapy machine, comprising a machine body. An output fiber optic socket and a display screen are provided on the front surface of the machine body. A laser power supply, a holmium laser generator and a water cooling mechanism are provided inside the machine body. The holmium laser generator includes a housing. Totally reflecting mirror assemblies, Q-switch assemblies, diaphragm assemblies and output mirror assemblies are provided on both the left and right sides inside the housing. The totally reflecting mirror assemblies, Q-switch assemblies, diaphragm assemblies and output mirror assemblies located on both sides inside the housing are arranged at intervals in a straight line direction. A beam combiner is further provided inside the housing and near the front end. Both of the output mirror assemblies are connected to the beam combiner through optical fibers. The output end of the beam combiner is connected to the output fiber optic socket through an optical fiber.

[0008] The holmium laser generator further includes a pump cavity assembly. The pump cavity assembly is arranged inside the housing and located between the Q-switch assembly and the diaphragm assembly. The pump cavity assembly includes a base. The base is fixedly connected to the housing. A translation plate that can slide back and forth along the base is provided above the base. Two mounting plates are symmetrically provided on the left and right sides of the top surface of the translation plate. Both of the mounting plates can slide left and right along the translation plate. Two laser cavities arranged in the left-right direction are provided on each of the mounting plates.

[0009] Optionally, a fiber optic plug is connected to the output end of the Q-switch assembly. A fiber optic jack adapted to the fiber optic plug is provided at the input end of the laser cavity.

[0010] Optionally, slide rails distributed in the front-back direction are provided on both the left and right sides of the top surface of the base. The translation plate is in sliding fit with the slide rails. A linear drive mechanism distributed in the front-back direction is further provided inside the housing. The output end of the linear drive mechanism is fixedly connected to one side of the translation plate.

[0011] Optionally, a guide post is provided on the bottom surface of each of the mounting plates. Through holes for the guide posts to pass through are provided on both the left and right sides of the top surface of the translation plate. The through holes are distributed in the left-right direction. Drive grooves are provided on both the left and right sides of the top surface of the base. The bottom end of the guide post passes through the through hole and extends into the corresponding drive groove. The drive groove is in a C shape and consists of two vertical grooves and one horizontal groove. When the guide post is located at the left and right sides inside the drive groove, the two laser cavities on the same mounting plate are respectively aligned with the corresponding Q-switch assemblies.

[0012] Optionally, electromagnets are provided on both sides of the top surface of the base and near the front end, and permanent magnets are embedded in the opposite back surfaces of the two mounting plates. The two permanent magnets correspond to the two electromagnets one by one, and when the electromagnets are energized, the facing magnetic poles of the electromagnets and the corresponding permanent magnets are the same; a DC power supply is also provided inside the shell, and a self-locking button switch is also provided at the front end position of the top surface of the base, and the DC power supply is electrically connected to the electromagnet through the self-locking button switch; when the guide column is located at the front end position inside the driving slot, the permanent magnet is opposite to the corresponding electromagnet, and the translation plate abuts against the button of the self-locking button switch.

[0013] Optionally, water receiving grooves are provided on both the front and rear sides of the top surface of the translation plate, a cover plate is provided inside the water receiving groove, and a water receiving cavity is formed between the cover plate and the inner bottom surface of the water receiving groove, and two water receiving pipes are provided on the bottom surface of the translation plate, and the two water receiving pipes are respectively connected to the two water receiving cavities, and the two water receiving pipes are respectively connected to the water outlet and water inlet of the water cooling mechanism.

[0014] Optionally, movable openings are provided on both the front and rear sides of the interior of the mounting plate, the bottom surface of the laser cavity has a water inlet and a water outlet, the top surface of the mounting plate is provided with through holes corresponding to the water inlet and the water outlet of the laser cavity, the through holes are communicated with the interior of the movable opening, a movable part is further provided inside the movable opening, the movable part is a hollow structure, the movable part and the corresponding water receiving cavity are connected by a hose, and the top surface of the movable part is also provided with a water permeable hole adapted to the through holes.

[0015] Optionally, a fixed block is provided in the middle of the top surface of the translation plate, and the movable part and the fixed block are connected by a connecting rod.

[0016] Optionally, a sliding block is provided at one end of the connecting rod extending into the movable opening, and the sliding block cooperates with the movable part in a vertical sliding manner. Sliding columns are provided at both the front and rear ends of the outside of the movable part, and guide grooves are provided on both the front and rear side walls of the inside of the movable opening. The middle section of the guide groove is distributed in the horizontal direction, and the two ends of the guide groove are distributed in an upward inclined manner.

[0017] Optionally, a hollow cavity is penetrated through the top wall of the movable part, and a shielding stainless steel sheet is slidably connected to the inside of the hollow cavity, and a circular hole is opened on the shielding stainless steel sheet. A spring and an electromagnetic block are respectively provided at the left and right ends of the inside of the hollow cavity, and the two ends of the spring are respectively connected to the inner end of the hollow cavity and the shielding stainless steel sheet, and when the electromagnetic block is powered on, the circular hole and the water-permeable hole are staggered, and when the electromagnetic block is powered on, the circular hole is opposite to the water-permeable hole; the electromagnetic block is electrically connected to the DC power supply, and micro switches connected to the corresponding electromagnetic blocks are provided at the two end positions inside the driving slot, and when the guide column is located at the two end positions of the driving slot, the corresponding electromagnetic blocks are in the powered-on state.

[0018] Compared with the prior art, the present invention provides a high-power four-cavity holmium laser therapy machine, which has the following beneficial effects:

[0019] 1. The present invention has four laser cavities, of which two laser cavities facing the Q switch assembly are in working state, and the other two laser cavities are in standby state. Once a laser cavity fails, the standby laser cavity can be switched in time, thus helping to ensure the stability and safety of the surgical process;

[0020] 2. When switching the working state of the laser cavity, the present invention only needs to control the translation plate to reciprocate forward and backward through the linear drive mechanism, which is simple in operation and is conducive to quickly switching the laser cavity;

[0021] 3. No matter how the laser cavity in the present invention is switched, the movable part is always connected to the laser cavity in the working state. Therefore, only the laser cavity in the working state is always connected to the water cooling mechanism, thereby avoiding the ineffective operation of the water cooling mechanism and allowing the cooling water to fully act on the laser cavity in the working state;

[0022] 4. Both ends of the driving slot in the present invention are provided with micro switches. Only when the guide posts are located at both ends of the driving slot, the electromagnetic blocks in the movable part are powered on. In other states, the electromagnetic blocks are powered off and the water holes are closed, so as to prevent the cooling water in the movable part from leaking to the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 It is a cross-sectional view of the structure of the holmium laser generator of the present invention;

[0025] Figure 3 It is a cross-sectional view of another state of the holmium laser generator of the present invention;

[0026] Figure 4 It is a schematic diagram of the pump chamber assembly of the present invention;

[0027] Figure 5 It is a cross-sectional view of the pump chamber assembly of the present invention;

[0028] Figure 6 This is a schematic diagram of the base structure of the present invention;

[0029] Figure 7 It is a schematic diagram of the structure of the translation plate of the present invention;

[0030] Figure 8 It is a schematic diagram of the back side of the translation plate of the present invention;

[0031] Fig. 9 It is a schematic diagram of the structure of the active part of the present invention;

[0032] Fig.10 It is a cross-sectional view of the mounting plate structure of the present invention;

[0033] Fig.11 It is a cross-sectional view of the active part structure of the present invention.

[0034] In the figure: 100, machine body; 101, output optical fiber socket; 102, display screen; 200, laser power supply; 300, holmium laser generator; 301, housing; 302, total reflector assembly; 303, Q switch assembly; 304, aperture assembly; 305, output mirror assembly; 306, beam combiner; 307, base; 308, translation plate; 309, mounting plate; 310, laser cavity; 311, optical fiber plug; 312, optical fiber jack; 313, slide rail; 314, linear drive mechanism; 315, guide column; 316, through-hole; 317, drive slot; 318, laser beam generator; 319, laser beam generator; 320, laser beam generator; 321, laser beam generator; 322, laser beam generator; 323, laser beam generator; 324, laser beam generator; 325, laser beam generator; 326, laser beam generator; 327, laser beam generator; 328, laser beam generator; 329, laser beam generator; 330, laser beam generator; 331, laser beam generator; 332, laser beam generator; 333, laser beam generator; 334, laser beam generator; 335, laser beam generator; 336, laser beam generator; 337, laser beam generator; 338, laser beam generator; 339, laser beam generator; 340, laser beam generator; 341, laser beam generator; 342, laser beam generator; 343, laser beam generator; 344, laser beam generator; 345, laser beam generator; 346, laser beam generator; 347, laser beam generator; 348, laser beam generator; 349, laser beam generator; 350, laser beam generator; 351, laser beam generator; 352, laser beam generator; 18. Electromagnet; 319. Permanent magnet; 320. Self-locking push button switch; 321. Water tank; 322. Cover plate; 323. Water pipe; 324. Movable opening; 325. Through hole; 326. Movable part; 327. Connecting rod; 328. Slider; 329. Sliding column; 330. Guide groove; 331. Water-permeable hole; 332. Hollow cavity; 333. Shielding stainless steel sheet; 334. Round hole; 335. Spring; 336. Electromagnetic block; 337. Micro switch; 338. Fixed block; 339. Strip opening; 400. Water cooling mechanism; 500. DC power supply. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1 - Fig.11A high-power four-cavity holmium laser therapy machine comprises a machine body 100, an output optical fiber socket 101 and a display screen 102 are arranged on the front of the machine body 100, a laser power supply 200, a holmium laser generator 300 and a water cooling mechanism 400 are arranged inside the machine body 100, wherein the holmium laser generator 300 comprises a shell 301, and a total reflection mirror assembly 302, a Q switch assembly 303, an aperture assembly 304 and an output mirror assembly 305 are arranged on both sides of the inside of the shell 301, and the total reflection mirror assembly 302, the Q switch assembly 303, the aperture assembly 304 and the output mirror assembly 305 on both sides of the inside of the shell 301 are arranged at intervals in a straight line direction; a beam combiner 306 is also arranged inside the shell 301 and near the front end, and two output mirror assemblies 305 are connected to the beam combiner 306 through optical fibers, and the output end of the beam combiner 306 is connected to the output optical fiber socket 101 through optical fibers.

[0037] The holmium laser generator 300 also includes a pump cavity assembly, which is arranged inside the housing 301 and between the Q switch assembly 303 and the aperture assembly 304. The pump cavity assembly includes a base 307, which is fixedly connected to the housing 301. A translation plate 308 that can slide along the front and rear directions of the base 307 is provided above the base 307. Two mounting plates 309 are symmetrically provided on the left and right sides of the top surface of the translation plate 308. Both mounting plates 309 can slide along the left and right directions of the translation plate 308. Two laser cavities 310 are provided on each mounting plate 309. The function of the laser cavity 310 is that the photons inside it will be continuously reflected under the action of the reflector to form back and forth reflection of light. In this process, the photons continuously interact with the medium to form a stimulated radiation process, so that the number of photons continues to increase, forming light amplification. When the number of photons reaches a certain level, laser begins to form in the laser cavity 310.

[0038] Furthermore, the output end of the Q switch assembly 303 is connected to an optical fiber plug 311, and the input end of the laser cavity 310 is provided with an optical fiber jack 312 adapted to the optical fiber plug 311. That is, the Q switch assembly 303 and the laser cavity 310 are connected by optical fiber.

[0039] Specifically, the left and right sides of the top surface of the base 307 are provided with slide rails 313 distributed along the front-back direction, and the translation plate 308 is slidably matched with the slide rails 313. The interior of the housing 301 is also provided with a linear drive mechanism 314 distributed along the front-back direction, and the output end of the linear drive mechanism 314 is fixedly connected to one side of the translation plate 308. In this embodiment, the linear drive mechanism 314 adopts an electric push rod, and the movable end of the electric push rod is fixedly connected to the side wall of the translation plate 308, which is used to push the translation plate 308 to slide forward and backward. When the electric push rod pushes the translation plate 308 to move forward, the laser cavity 310 and the Q switch assembly 303 can be automatically separated.

[0040] Further, guide posts 315 are provided on the bottom surface of each mounting plate 309. Through holes 316 for the guide posts 315 to pass through are formed on the left and right sides of the top surface of the translation plate 308. The through holes 316 are distributed in the left-right direction. Driving grooves are formed on the left and right sides of the top surface of the base 307. The bottom end of the guide post 315 passes through the through hole 316 and extends into the corresponding driving groove 317. The driving groove 317 is in a U shape. The driving groove 317 can be regarded as composed of two vertical grooves and one horizontal groove, and the diameter of the guide post 315 is the same as the inner width of the two vertical grooves.

[0041] In addition, electromagnets 318 are provided on the left and right sides of the top surface of the base 307 and near the front end position. Permanent magnets 319 are fixedly embedded on the opposite surfaces of the two mounting plates 309. The two permanent magnets 319 correspond to the two electromagnets 318 one by one. When the electromagnet 318 is energized, the opposite ends of the electromagnet 318 and the corresponding permanent magnet 319 have the same magnetic poles. A DC power supply 500 is also provided inside the housing 301. A self-locking push-button switch 320 is provided at the front end position of the top surface of the base 307. The DC power supply 500 is electrically connected to the electromagnet 318 through the self-locking push-button switch 320. When the guide post 315 is located at the front end position inside the driving groove 317, the permanent magnet 319 is directly opposite to the corresponding electromagnet 318, and the translation plate 308 abuts against the button of the self-locking push-button switch 320. It is worth mentioning that each time the self-locking push-button switch 320 is touched, the on-off state of the electromagnet 318 can be switched. More specifically, when the guide post 315 is located inside the vertical groove on the side close to the center of the housing 301, the electromagnet 318 is in a de-energized state.

[0042] In the specific application process of this embodiment, in the initial state, the guide post 315 is located inside the vertical groove on the side close to the center of the housing 301, as Figure 2 shown; when it is necessary to switch the laser cavity 310, the linear driving mechanism 314 is first started to push the translation plate 308 forward until the translation plate 308 contacts the self-locking push-button switch 320, and then the translation plate 308 is controlled to retreat to its original position. During this process, when the bottom end of the guide post 315 moves into the horizontal groove of the driving groove 317, at this time the electromagnet 318 is still in a de-energized state, then under the attraction of the permanent magnet 319 and the electromagnet 318, the mounting plate 309 will slide towards the direction close to the corresponding electromagnet 318, that is, the two mounting plates 309 will move away from each other. When the translation plate 308 retreats to its original position again, the guide post 315 will be located inside the vertical groove on the side far from the center of the housing 301, and the translation plate 308 will release the self-locking push-button switch 320, making the electromagnet 318 energized.

[0043] When it is necessary to switch the laser cavity 310 again, the state of the pump cavity assembly at this time is as Figure 3As shown, the linear drive mechanism 314 also needs to push the translation plate 308 forward until the translation plate 308 contacts the self-locking button switch 320, and then control the translation plate to retreat to its original position; in this process, since the electromagnet 318 is energized, the two mounting plates 309 will approach each other under the action of repulsion until the guide column 315 moves to the inside of the vertical slot located on one side close to the center of the housing 301. Therefore, in this embodiment, every time the laser cavity 310 needs to be switched, it is only necessary to use the linear drive mechanism 314 to control the translation plate 308 to slide back and forth.

[0044] It should be noted that, when the bottom end of the guide column 315 is located inside the vertical groove of the driving groove 317 away from the center of the shell 301, the two Q switch components 303 are respectively opposite to the two laser cavities 310 on the two mounting plates 309 located near the center of the shell 301; conversely, when the bottom end of the guide column 315 is located inside the vertical groove close to the center of the shell 301, the two Q switch components 303 are respectively opposite to the two laser cavities 310 on the two mounting plates 309 located away from the center of the shell 301.

[0045] In another embodiment of the present application, a water receiving groove 321 is provided on both the front and rear sides of the top surface of the translation plate 308, a cover plate 322 is provided inside the water receiving groove 321, and the cover plate 322 and the inner bottom surface of the water receiving groove 321 together form a water receiving cavity, and two water receiving pipes 323 are provided on the bottom surface of the translation plate 308, and the two water receiving pipes 323 are respectively connected to the two water receiving cavities, and the two water receiving pipes 323 are respectively connected to the water outlet and water inlet of the water cooling mechanism 400. The water cooling mechanism 400 is a prior art, which includes a water tank, a water pump, a compressor and a condenser, and its function is to cool the water and then return the cooled water to the water receiving cavity, thereby forming a cycle. In addition, it should be supplemented that a strip opening 339 for the water receiving pipe 323 to pass through is provided on the base 307, and the water receiving pipe 323 passes through the strip opening 339 and is connected to the water cooling mechanism 400.

[0046] Furthermore, movable openings 324 are provided on both the front and rear sides of the interior of the mounting plate 309, the bottom surface of the laser cavity 310 has a water inlet and a water outlet, and the top surface of the mounting plate 309 is provided with through holes 325 corresponding to the water inlet and the water outlet of the laser cavity 310, the through holes 325 are communicated with the interior of the movable opening 324, and a movable part 326 is also provided inside the movable opening 324, the movable part 326 is a hollow structure, the movable part 326 and the corresponding water receiving cavity are connected by a hose, and the top surface of the movable part 326 is also provided with a water permeable hole 331 adapted to the through hole 325. Since two laser cavities 310 are arranged on each mounting plate 309, and each laser cavity has a water inlet and a water outlet, the top surface of each mounting plate 309 has four through holes 325, and the four through holes 325 correspond one by one to the water inlets and water outlets of the two laser cavities 310 respectively; secondly, each mounting plate 309 has two movable ports 324, and each movable port 324 has two through holes 325, therefore, the two through holes 325 on one of the movable ports 324 are respectively connected to the water inlets of the two laser cavities 310, and the two through holes 325 on the other movable port 324 are respectively connected to the water outlets of the two laser cavities 310.

[0047] It should be noted that each movable port 324 has a movable portion 326, and the two movable portions 326 on the same mounting plate 309 are respectively connected to the two water receiving cavities on the translation plate 308. Therefore, one of the two movable portions 326 on the same mounting plate 309 is used to supply water to the inside of the laser cavity 310, and the other is used to discharge the water in the laser cavity 310. In summary, after the water cooling mechanism 400 inputs cold water into the corresponding water receiving cavity, the cooling water enters the corresponding laser cavity 310 through the movable portion 326, and the water flowing through the laser cavity 310 returns to the water cooling mechanism 400 through the movable portion 326 and the water receiving cavity, thereby forming a water cooling cycle for cooling the laser cavity 310.

[0048] Specifically, a fixed block 338 is provided in the middle of the top surface of the translation plate 308, and the movable portion 326 and the fixed block 338 are connected via a connecting rod 327. Specifically, when the bottom end of the guide column 315 is located inside the vertical slot away from the center of the housing 301, the two movable portions 326 located in the same mounting plate 309 are both connected to the laser cavity 310 near the center of the housing 301; conversely, when the bottom end of the guide column 315 is located inside the vertical slot near the center of the housing 301, the two movable portions 326 located in the same mounting plate 309 are both connected to the laser cavity 310 far from the center of the housing 301.

[0049] Furthermore, a slider 328 is provided at one end of the connecting rod 327 extending into the movable opening 324, and the slider 328 and the movable part 326 slide in cooperation in the vertical direction. Sliding posts 329 are provided at both ends of the outer front and rear sides of the movable part 326, and guiding grooves 330 are provided at both the inner front and rear side walls of the movable opening 324. The middle section of the guiding grooves 330 is distributed in the horizontal direction, and the two ends of the guiding grooves 330 are distributed in an upward tilt. It is worth mentioning that when the movable part 326 slides left and right inside the movable opening 324, the sliding post 329 is always located in the guiding groove 330, and because the two ends of the guiding groove 330 are tilted upward, specifically in this embodiment, when the sliding posts 329 are respectively located at the two ends of the guiding groove 330, the water-permeable holes 331 on the top surface of the movable part 326 are respectively aligned with the corresponding two through holes 325. Therefore, specifically during the left and right translation of the movable part 326, the movable part 326 does not fit with the inner top surface of the movable port 324, which serves to reduce the friction force of the movable part 326 during translation; in addition, since the two ends of the guide groove 330 are inclined upward, when the sliding column 329 slides obliquely upward along the two ends of the guide groove 330, the top surface of the movable part 326 can be tightly abutted against the inner top surface of the movable port 324, thereby improving the sealing performance and preventing cooling water from leaking from the movable part 326 into the movable port 324.

[0050] Furthermore, a hollow cavity 332 is formed through the top wall of the movable portion 326, and a shielding stainless steel sheet 333 is slidably connected to the inside of the hollow cavity 332, and a circular hole 334 is formed on the shielding stainless steel sheet 333. A spring 335 and an electromagnetic block 336 are respectively provided at the left and right ends of the hollow cavity 332, and the two ends of the spring 335 are respectively connected to the inner end of the hollow cavity 332 and the shielding stainless steel sheet 333. When the electromagnetic block 336 is powered off, the circular hole 334 and the water-permeable hole 331 are staggered. When the electromagnetic block 336 is powered on, the circular hole 334 is opposite to the water-permeable hole 331. The electromagnetic block 336 is electrically connected to the DC power supply 500, and micro switches 337 connected to the corresponding electromagnetic blocks 336 are provided at the two ends of the driving slot 317. When the guide column 315 is located at the two ends of the driving slot 317, the corresponding electromagnetic blocks 336 are all powered on. Therefore, the water hole 331 is in an open state only when the guide column 315 is located at the two end positions of the driving groove 317. When the guide column 315 is located at other positions, the water hole 331 is in a closed state. The purpose is to prevent the cooling water from leaking from the movable part 326 to the outside during the movement of the movable part 326.

[0051] It is worth mentioning that the micro switch 337 is in the disconnected state in the natural state, and is in the closed state only when an external force is applied; the two micro switches 337 located in the same driving slot 317 are arranged in parallel, and the two electromagnetic blocks 336 located in the same mounting plate 309 are arranged in series with the DC power supply 500. Therefore, as long as one of the two micro switches 337 is in the closed state, the two electromagnetic blocks 336 are both in the energized state; when the guide column 315 is located at the two end positions of the driving slot 317, the electromagnetic blocks 336 are both in the energized state, and the water permeable holes 331 are both in the open state.

[0052] In summary, in the initial state of this embodiment, the pump chamber components are as follows Figure 2 As shown, at this time, the guide column 315 is located in the vertical slot near the center of the housing 301, and the electromagnet 318 is in the off state, while the guide column 315 is in contact with the micro switch 337 at the inner end of the driving slot 317, so the electromagnetic block 336 is in the on state, and the water-permeable hole 331 is in the open state, so that the cooling water in the water-cooling mechanism 400 can smoothly enter the laser cavity 310 located near the middle position of the housing 301, thereby dissipating heat and cooling the corresponding laser cavity 310. In addition, at this time, the two laser cavities 310 located near the middle position of the housing 301 are in the working state, and the two laser cavities 310 are respectively connected to the corresponding Q switch components 303.

[0053] When a laser cavity 310 in working state fails, the linear drive mechanism 314 needs to push the translation plate 308 forward until the translation plate 308 contacts the self-locking button switch 320, and then the linear drive mechanism 314 controls the translation plate 308 to retreat to the original position. In this process, when the guide column 315 moves into the transverse groove of the driving groove 317 (at this time, the translation plate 308 just contacts the self-locking button switch 320), under the attraction of the permanent magnet 319 and the electromagnet 318, the two mounting plates 309 both move toward the side away from the center of the housing 301. At this time, the two laser cavities 310 located near the center of the housing 301 will face the corresponding Q switch assembly 303; finally, as the translation plate 308 gradually retreats, the optical fiber plug 311 will also be plugged into the optical fiber jack 312 on the laser cavity 310, thereby realizing the switching of the laser cavity 310.

[0054] In this embodiment, the four laser cavities 310 can be repeatedly switched through only one linear drive mechanism 314 . The design principle is simple and the operation is convenient, which helps to quickly switch the laser cavity 310 and shorten the interruption time of the operation.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. High-power four-cavity holmium laser therapy machine, including a body (100), on the front of the body (100) there are an output fiber optic socket (101) and a display screen (102), inside the body (100) there are a laser power supply (200), a holmium laser generator (300) and a water cooling mechanism (400), and it is characterized in that: The holmium laser generator (300) includes a housing (301), on both the left and right sides inside the housing (301) there are total reflection mirror assemblies (302), Q-switch assemblies (303), diaphragm assemblies (304) and output mirror assemblies (305). The total reflection mirror assemblies (302), Q-switch assemblies (303), diaphragm assemblies (304) and output mirror assemblies (305) located on both sides inside the housing (301) are arranged at intervals in a straight line direction. Inside the housing (301) and near the front end position there is also a beam combiner (306). Both of the two output mirror assemblies (305) are connected to the beam combiner (306) through optical fibers. The output end of the beam combiner (306) is connected to the output fiber optic socket (101) through an optical fiber; The holmium laser generator (300) further includes a pump cavity assembly. The pump cavity assembly is arranged inside the housing (301) and is located between the Q-switch assembly (303) and the diaphragm assembly (304). The pump cavity assembly includes a base (307). The base (307) is fixedly connected to the housing (301). Above the base (307) there is a translation plate (308) that can slide back and forth along the front and back direction of the base (307). On the left and right sides of the top surface of the translation plate (308) there are symmetrically arranged two mounting plates (309). Both of the two mounting plates (309) can slide along the left and right direction of the translation plate (308). On each of the mounting plates (309) there are two laser cavities (310) arranged in the left and right direction; On the bottom surface of each of the mounting plates (309) there are guide posts (315). On the left and right sides of the top surface of the translation plate (308) there are through holes (316) for the guide posts (315) to pass through. The through holes (316) are distributed in the left and right direction. On the left and right sides of the top surface of the base (307) there are driving grooves. The bottom end of the guide post (315) passes through the through hole (316) and extends into the corresponding driving groove (317). The driving groove (317) is in a U shape, composed of two vertical grooves and one horizontal groove; When the bottom end of the guide post (315) is inside the vertical groove on the side away from the center of the housing (301) of the driving groove (317), then the two Q-switch assemblies (303) are respectively facing the two laser cavities (310) on the two mounting plates (309) that are on the side close to the center of the housing (301). When the bottom end of the guide post (315) is inside the vertical groove on the side close to the center of the housing (301) of the driving groove (317), then the two Q-switch assemblies (303) are respectively facing the two laser cavities (310) on the two mounting plates (309) that are on the side away from the center of the housing (301).

2. The high-power four-cavity holmium laser therapy machine according to claim 1, characterized in that: The output end of the Q switch component (303) is connected to an optical fiber plug (311), and the input end of the laser cavity (310) is provided with an optical fiber jack (312) adapted to the optical fiber plug (311).

3. The high-power four-cavity holmium laser therapy machine according to claim 2, characterized in that: Slide rails (313) distributed along the front-to-back direction are provided on both left and right sides of the top surface of the base (307); the translation plate (308) slidably cooperates with the slide rails (313); a linear drive mechanism (314) distributed along the front-to-back direction is also provided inside the housing (301); an output end of the linear drive mechanism (314) is fixedly connected to one side of the translation plate (308).

4. The high-power four-cavity holmium laser therapy machine according to claim 3, characterized in that: Electromagnets (318) are provided on both sides of the top surface of the base (307) and near the front end. Permanent magnets (319) are embedded in the opposite back surfaces of the two mounting plates (309). The two permanent magnets (319) correspond to the two electromagnets (318) one by one. When the electromagnets (318) are energized, the magnetic poles of the opposite ends of the electromagnets (318) and the corresponding permanent magnets (319) are the same. A DC power supply (50 0), a self-locking button switch (320) is also provided at the front end position of the top surface of the base (307), and the DC power supply (500) is electrically connected to the electromagnet (318) via the self-locking button switch (320); when the guide column (315) is located at the front end position inside the driving slot (317), the permanent magnet (319) is opposite to the corresponding electromagnet (318), and the translation plate (308) is in contact with the button of the self-locking button switch (320).

5. The high-power four-cavity holmium laser therapy machine according to claim 4, characterized in that: A water receiving groove (321) is provided on both the front and rear sides of the top surface of the translation plate (308); a cover plate (322) is provided inside the water receiving groove (321); the cover plate (322) and the inner bottom surface of the water receiving groove (321) together form a water receiving cavity; two water receiving pipes (323) are provided on the bottom surface of the translation plate (308); the two water receiving pipes (323) are respectively connected to the two water receiving cavities; and the two water receiving pipes (323) are respectively connected to the water outlet and water inlet of the water cooling mechanism (400).

6. The high-power four-cavity holmium laser therapy machine according to claim 5, characterized in that: Both front and rear sides of the interior of the mounting plate (309) are provided with movable openings (324); the bottom surface of the laser cavity (310) has a water inlet and a water outlet; the top surface of the mounting plate (309) is provided with through holes (325) corresponding to the water inlet and the water outlet of the laser cavity (310); the through holes (325) are communicated with the interior of the movable opening (324); a movable portion (326) is further provided inside the movable opening (324); the movable portion (326) is a hollow structure; the movable portion (326) and the corresponding water receiving cavity are communicated via a hose; and the top surface of the movable portion (326) is further provided with a water permeable hole (331) matched with the through holes (325).

7. The high-power four-cavity holmium laser therapy machine according to claim 6, characterized in that: A fixed block (338) is provided in the middle of the top surface of the translation plate (308), and the movable portion (326) and the fixed block (338) are connected via a connecting rod (327).

8. The high-power four-cavity holmium laser therapy machine according to claim 7, characterized in that: A sliding block (328) is provided at one end of the connecting rod (327) extending into the movable opening (324); the sliding block (328) and the movable portion (326) are slidably matched in the vertical direction; sliding posts (329) are provided at both the front and rear ends of the exterior of the movable portion (326); and guiding grooves (330) are provided on both the front and rear side walls of the interior of the movable opening (324); the middle section of the guiding grooves (330) is distributed in the horizontal direction, and both ends of the guiding grooves (330) are distributed in an upwardly inclined manner.

9. The high-power four-cavity holmium laser therapy machine according to claim 8, characterized in that: A hollow cavity (332) is formed through the top wall of the movable portion (326); a shielding stainless steel sheet (333) is slidably connected to the interior of the hollow cavity (332); a circular hole (334) is formed on the shielding stainless steel sheet (333); a spring (335) and an electromagnetic block (336) are respectively provided at the left and right ends of the hollow cavity (332); the two ends of the spring (335) are respectively connected to the inner end of the hollow cavity (332) and the shielding stainless steel sheet (333); when the electromagnetic block (336) is powered off, the circular hole (334) is opened. The guide column (315) and the water permeable hole (331) are staggered, and when the electromagnetic block (336) is energized, the circular hole (334) is directly opposite to the water permeable hole (331); the electromagnetic block (336) is electrically connected to the DC power supply (500), and micro switches (337) connected to the corresponding electromagnetic blocks (336) are provided at both ends of the driving slot (317); when the guide column (315) is located at both ends of the driving slot (317), the corresponding electromagnetic blocks (336) are both in the energized state.

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