阅读说明：本技术 掺铥光纤激光治疗装置 (Thulium-doped optical fiber laser treatment device ) 是由 欧阳德钦 刘敏秋 陈业旺 赵俊清 吴旭 吕启涛 阮双琛 于 2021-08-20 设计创作，主要内容包括：本发明公开一种掺铥光纤激光治疗装置,包括掺铥光纤激光器系统、驱动系统、激光耦合系统、医用光纤以及控制系统。掺铥光纤激光器系统包括指示光半导体激光器、波分复合器、模场适配器、第一半导体激光泵浦源、正向泵浦合束器、高反光纤光栅、掺铥光纤、低反光纤光栅、反向泵浦合束器、第二半导体激光泵浦源、第一包层泵浦剥离器、第二包层泵浦剥离器以及传能光纤。控制系统连接驱动系统,驱动系统连接掺铥光纤激光器系统,掺铥光纤激光器系统连接激光耦合系统,激光耦合系统连接医用光纤。本发明技术方案使治疗装置可实现掺铥光纤激光连续及脉冲输出而达到组织切割、碎石与止血的一体化功能；同时还可提高碎石以及组织切除效率和降低设备成本。(The invention discloses a thulium-doped optical fiber laser treatment device which comprises a thulium-doped optical fiber laser system, a driving system, a laser coupling system, a medical optical fiber and a control system. The thulium-doped fiber laser system comprises an indicating optical semiconductor laser, a wavelength division combiner, a mode field adapter, a first semiconductor laser pumping source, a forward pumping beam combiner, a high-reflection fiber grating, a thulium-doped fiber, a low-reflection fiber grating, a reverse pumping beam combiner, a second semiconductor laser pumping source, a first cladding pumping stripper, a second cladding pumping stripper and an energy-transfer fiber. The control system is connected with the driving system, the driving system is connected with the thulium-doped fiber laser system, the thulium-doped fiber laser system is connected with the laser coupling system, and the laser coupling system is connected with the medical optical fiber. The technical scheme of the invention enables the treatment device to realize the continuous and pulse output of thulium-doped optical fiber laser so as to achieve the integrated functions of tissue cutting, lithotripsy and hemostasis; meanwhile, the efficiency of lithotripsy and tissue excision can be improved, and the equipment cost can be reduced.)

1. A thulium-doped optical fiber laser treatment device is characterized by comprising a thulium-doped optical fiber laser system, a driving system, a laser coupling system, a medical optical fiber and a control system;

the thulium-doped fiber laser system comprises an indicating light semiconductor laser, a wavelength division combiner, a mode field adapter, a first semiconductor laser pumping source, a forward pumping beam combiner, a high-reflection fiber grating, thulium-doped optical fiber, a low-reflection fiber grating, a reverse pumping beam combiner, a second semiconductor laser pumping source, a first cladding pumping stripper, a second cladding pumping beam stripper and an energy-transmitting fiber, wherein the indicating light semiconductor laser, the wavelength division combiner, the mode field adapter, the first cladding pumping beam splitter, the forward pumping beam combiner, the high-reflection fiber grating, the thulium-doped optical fiber, the low-reflection fiber grating, the reverse pumping beam combiner, the second cladding pumping beam stripper and the energy-transmitting fiber are connected in sequence, the first semiconductor laser pumping source is connected with the pumping end of the forward pumping beam combiner, the second semiconductor laser pumping source is connected to the pumping end of the reverse pumping beam combiner;

the control system is connected with the driving system and used for controlling the work of the driving system;

the driving system is connected with the thulium-doped fiber laser system and is used for providing driving current for the first semiconductor laser pumping source, the second semiconductor laser pumping source and the indicating optical semiconductor laser of the thulium-doped fiber laser system;

the energy transmission optical fiber of the thulium-doped optical fiber laser system is connected with the laser coupling system;

the laser coupling system is connected with the medical optical fiber.

2. The thulium doped fiber laser therapy device according to claim 1, wherein the wavelength of the indicating optical semiconductor laser is 500nm or more and 550nm or less;

and/or the pumping wavelengths of the first semiconductor laser pumping source and the second semiconductor laser pumping source are greater than or equal to 780nm and less than or equal to 800 nm;

and/or the diameter of the fiber core of the medical optical fiber is more than or equal to 50 μm and less than or equal to 1000 μm.

3. The thulium doped fiber laser therapy device according to claim 1, further comprising a cooling system connected to the thulium doped fiber laser system for cooling and dissipating the heat of the first semiconductor laser pump source, the thulium doped fiber and the second semiconductor laser pump source.

4. The thulium doped fiber laser therapy device according to claim 3, wherein the cooling medium of the cooling system is water.

5. The thulium doped fiber laser therapy device according to claim 1, further comprising a power-temperature monitoring system connected to the thulium doped fiber laser system for detecting the output power and operating temperature during laser operation of the thulium doped fiber laser system.

6. The thulium doped fiber laser therapy device according to claim 5, further comprising a safety protection system connected to the power-temperature monitoring system and the control system, wherein the safety protection system is configured to analyze and feed back data detected by the power-temperature monitoring system to the control system.

7. The thulium doped fiber laser therapy device according to claim 1, further comprising two switches, both of which are connected to the control system, wherein one of the two switches is used to control the laser of the thulium doped fiber laser system to operate in a continuous manner, and the other of the two switches is used to control the laser of the thulium doped fiber laser system to operate in a pulsed state.

8. The thulium doped fiber laser therapy device according to claim 7, wherein both of the switches are foot switches.

9. The thulium doped fiber laser therapy device according to claim 1, further comprising a display operating system, the display operating system being connected to the control system.

10. The thulium doped fiber laser therapy device of claim 9, wherein the display operating system includes a touch display screen.

Technical Field

The invention relates to the technical field of fiber laser medical treatment, in particular to a thulium-doped fiber laser treatment device.

Background

The optical fiber has the advantages of high beam quality, good thermal stability, small volume, high efficiency, simple structure, convenient maintenance and the like due to superior flexibility, flexibility and easy integration, and is widely applied to the fields of military and civil use and the like. Laser medical technology is also widely applied at present. Particularly, for urinary system stones, laser has become one of the mainstream lithotripsy measures, and the mainstream lithotripsy measures in domestic hospitals include external shock wave lithotripsy, air pressure ballistic lithotripsy and holmium laser lithotripsy. The external shock wave lithotripsy is that high-energy shock waves penetrate through the human body and focus on urinary tract stones in the body, the energy is released to smash the stones, and the stone fragments are naturally discharged. When the air pressure ballistic calculus crushing treatment is used for treating the calculus of the middle-lower segment ureter, the calculus is easy to wash back into the upper segment ureter or kidney, the operation is lost, and the operation can be performed only under a rigid ureteroscope, so that the calculus crushing treatment hardly has the effect on the calculus of the upper segment ureter and the calculus of the kidney, and the calculus crushing efficiency is about 70 percent. In contrast, laser lithotripsy has numerous advantages, such as: 1. the wound healing agent has small damage to surrounding normal tissues, light postoperative reaction, quick wound healing and small scars; 2. the hemostatic effect is good, the operation has no blood seepage, the visual field is clear and identifiable, and the operation time can be greatly shortened; 3. the laser can be transmitted by optical fibers, can be used together with various endoscopes or puncture needles, and reaches a calculus part through a ureter to realize minimally invasive or non-invasive surgery; 4. the laser wavelength is selected to be located in the water high-absorption area, so that when the stone is broken, water absorbs a large amount of energy, damage to surrounding tissues is reduced, the penetration depth of the laser to human tissues is shallow, and the safety is high.

Currently, for laser lithotripsy, a commonly used laser is a holmium laser, and although holmium laser lithotripsy is widely applied clinically, certain problems also exist, such as: 1. holmium laser is flash lamp pumped solid laser, and the gain medium is Ho: YAG, which has poor light beam quality, so that the method is carried outWhen the optical fiber is coupled, the optical fiber with larger fiber core size, which is generally 200-; the fuzzy operation visual field also increases the potential perforation probability of the ureter wall and increases the operation time; in addition, the large fiber core diameter also results in a reduction in the power density acting on the surface of the stone at equivalent power levels. 2. The holmium laser is flash lamp pumping solid laser, the photoelectric conversion efficiency is only about 3%, the highest output power of a single resonant cavity is about 30W, for holmium laser with high average power output, a plurality of laser resonant cavities need to be adopted, and a plurality of resonant cavities output laser to be synthesized into one beam of output, for example, 120W holmium laser, at least four resonant cavities are needed, a water cooling device is needed, and the volume, the cost and the complexity of the system are undoubtedly increased. The water absorption level reflects the ablation efficiency of the concretion to a certain extent. Wherein the water also has an absorption peak at 1940nm, about 130cm^-1While the absorption coefficient at 2120nm of holmium laser band is only 24cm^-1。

Disclosure of Invention

The invention mainly aims to provide a thulium-doped optical fiber laser treatment device, aiming at realizing the integrated functions of tissue cutting, lithotripsy and hemostasis by adopting the modulated semiconductor laser pumping technology and realizing the continuous and pulse output of thulium-doped optical fiber laser; meanwhile, the unique water absorption wavelength and the excellent quality of the optical fiber laser beam can greatly improve the efficiency of lithotripsy and tissue excision; besides, the optical fiber laser is compact in structure and easy to maintain, and can reduce cost to a certain extent and improve cost performance except for enlarging the application range.

In order to achieve the purpose, the thulium-doped optical fiber laser treatment device provided by the invention comprises a thulium-doped optical fiber laser system, a driving system, a laser coupling system, a medical optical fiber and a control system;

the thulium-doped fiber laser system comprises an indicating light semiconductor laser, a wavelength division combiner, a mode field adapter, a first semiconductor laser pumping source, a forward pumping beam combiner, a high-reflection fiber grating, thulium-doped optical fiber, a low-reflection fiber grating, a reverse pumping beam combiner, a second semiconductor laser pumping source, a first cladding pumping stripper, a second cladding pumping beam stripper and an energy-transmitting fiber, wherein the indicating light semiconductor laser, the wavelength division combiner, the mode field adapter, the first cladding pumping beam splitter, the forward pumping beam combiner, the high-reflection fiber grating, the thulium-doped optical fiber, the low-reflection fiber grating, the reverse pumping beam combiner, the second cladding pumping beam stripper and the energy-transmitting fiber are connected in sequence, the first semiconductor laser pumping source is connected with the pumping end of the forward pumping beam combiner, the second semiconductor laser pumping source is connected to the pumping end of the reverse pumping beam combiner;

the control system is connected with the driving system and used for controlling the work of the driving system;

the driving system is connected with the thulium-doped fiber laser system and is used for providing driving current for the first semiconductor laser pumping source, the second semiconductor laser pumping source and the indicating optical semiconductor laser of the thulium-doped fiber laser system;

the energy transmission optical fiber of the thulium-doped optical fiber laser system is connected with the laser coupling system;

the laser coupling system is connected with the medical optical fiber.

Optionally, the wavelength of the indicating light semiconductor laser is greater than or equal to 500nm and less than or equal to 550 nm;

and/or the pumping wavelengths of the first semiconductor laser pumping source and the second semiconductor laser pumping source are greater than or equal to 780nm and less than or equal to 800 nm;

and/or the diameter of the fiber core of the medical optical fiber is more than or equal to 50 μm and less than or equal to 1000 μm.

Optionally, mix thulium optic fibre laser therapy device still includes cooling system, cooling system connects mix thulium optic fibre laser system for it is right first semiconductor laser pumping source mix thulium optic fibre and the second semiconductor laser pumping source cools off the heat dissipation.

Optionally, the cooling medium of the cooling system is water.

Optionally, the thulium-doped fiber laser therapy device further includes a power-temperature monitoring system, the power-temperature monitoring system is connected to the thulium-doped fiber laser system, and the power-temperature monitoring system is used for detecting the output power and the working temperature of the thulium-doped fiber laser system during the laser operation process.

Optionally, the thulium-doped fiber laser therapy device further includes a safety protection system, the safety protection system is connected to the power-temperature monitoring system and the control system, and the safety protection system is used for analyzing and feeding back data detected by the power-temperature monitoring system to the control system.

Optionally, the thulium-doped fiber laser therapy device further includes two switches, two of the switches are connected to the control system, two of the switches are used for controlling the laser of the thulium-doped fiber laser system to operate in a continuous mode, and the other of the switches is used for controlling the laser of the thulium-doped fiber laser system to operate in a pulse state mode.

Optionally, both of the switches are foot switches.

Optionally, the thulium-doped fiber laser therapy device further includes a display operation system, and the display operation system is connected to the control system.

Optionally, the display operating system includes a touch display screen.

When the thulium-doped fiber laser therapeutic device is used, because the thulium-doped fiber laser system comprises the indicating optical semiconductor laser, the wavelength division multiplexer, the mode field adapter, the first semiconductor laser pumping source, the forward pumping beam combiner, the high-reflection fiber grating, the thulium-doped fiber, the low-reflection fiber grating, the reverse pumping beam combiner, the second semiconductor laser pumping source, the first cladding pumping stripper, the second cladding pumping stripper and the energy-transmitting fiber, the first semiconductor laser pumping source and the second semiconductor laser pumping source of the thulium-doped fiber laser system emit pumping light under the driving of the driving system and are respectively coupled into the thulium-doped fiber with large mode area through the forward pumping beam combiner and the reverse pumping beam combiner, the pumping light excites the thulium ions of the thulium-doped fiber to realize energy level transition, and further emit light with the wavelength between 1900 and 2100nm, and under the action of the high-reflection and low-reflection fiber gratings, laser oscillation output is realized, and the residual pump light is stripped by the first cladding pump stripper and the second cladding pump stripper.

That is, the thulium-doped fiber laser system of the thulium-doped fiber laser therapeutic device in the present scheme can emit laser with a wavelength within the range of 1900-2100nm under the driving of the driving system, wherein the high absorption peak 1940nm of water is included, so that the fiber laser beam quality is better, and the fiber laser beam can be coupled with the medical fiber with a smaller fiber core, thereby greatly enhancing the operation effect and efficiency. Moreover, the thulium-doped fiber laser system can also realize continuous and pulse laser output. Wherein, the continuous laser output state can realize the tissue cutting and hemostasis function, and the pulse laser output state can realize the rubble function to make this thulium-doped fiber laser treatment device reach tissue cutting, rubble and hemostasis integrated function. In order to ensure enough output power, a first semiconductor laser pumping source and a second semiconductor laser pumping source are respectively arranged at two ends to make up for the deficiency of the output power. In addition, the whole laser system is an all-fiber device, the structure is relatively compact, the service life is relatively long, and therefore the complex maintenance process in the later period can be avoided, and the application cost performance in the medical fields of laser tissue cutting, stone breaking and the like is greatly enhanced. Furthermore, the thulium-doped optical fiber laser treatment device in the scheme further comprises a control system, and corresponding work can be automatically and accurately performed by the control driving system, so that the automation degree and the working stability of the thulium-doped optical fiber laser treatment device are improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of a thulium-doped fiber laser treatment device according to the present invention;

fig. 2 is a schematic structural diagram of a thulium-doped fiber laser system of the thulium-doped fiber laser therapy device in fig. 1.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Thulium-doped optical fiber laser treatment device	112	Second cladding pump stripper
1	Thulium-doped fiber laser system	113	Energy transmission optical fiber
				101	Indicating light semiconductor laser	2	Drive system
102	Wave division multiplexer	3	Laser coupling system
				103	Mode field adapter	4	Medical optical fiber
104	First semiconductor laser pumping source	5	Control system
				105	Forward pump beam combiner	6	Cooling system
106	High-reflection fiber grating	7	Power-temperature monitoring system
				107	Thulium doped optical fiber	8	Safety protection system
108	Low reflection fiber grating	9	Switch with a switch body
				109	Beam combiner for reverse pump	10	Display operating system
110	Second semiconductor laser pumping source	11	Power supply system
				111	First cladding pump stripper

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 and fig. 2, the present invention provides a thulium-doped fiber laser therapy device 100. In an embodiment of the present invention, the thulium-doped fiber laser therapy device 100 includes a thulium-doped fiber laser system 1, a driving system 2, a laser coupling system 3, a medical fiber 4, and a control system 5. Wherein, the thulium-doped fiber laser system 1 includes an indication optical semiconductor laser 101, a wavelength division multiplexer 102, a mode field adapter 103, a first semiconductor laser pump source 104, a forward pumping beam combiner 105, a high-reflection fiber grating 106, a thulium-doped fiber 107, a low-reflection fiber grating 108, a reverse pumping beam combiner 109, a second semiconductor laser pump source 110, a first cladding pump stripper 111, a second cladding pump stripper 112 and an energy-transmitting fiber 113, the indication optical semiconductor laser 101, the wavelength division multiplexer 102, the mode field adapter 103, the first cladding pump stripper 111, the forward pumping beam combiner 105, the high-reflection fiber grating 106, the thulium-doped fiber 107, the low-reflection fiber grating 108, the reverse pumping beam combiner 109, the second cladding pump stripper 112 and the energy-transmitting fiber 113 are connected in sequence, the first semiconductor laser pump source 104 is connected to the pump end of the forward pumping beam combiner 105, the second semiconductor laser pumping source 110 is connected to the pumping end of the backward pumping beam combiner 109; the control system is connected with the driving system 2 and used for controlling the work of the driving system 2; the driving system 2 is connected to the thulium-doped fiber laser system 1, and is configured to provide driving currents for the first semiconductor laser pumping source 104, the second semiconductor laser pumping source 110, and the indication optical semiconductor laser 101 of the thulium-doped fiber laser system 1; the energy transmission optical fiber 113 of the thulium-doped optical fiber laser system 1 is connected with the laser coupling system 3; the laser coupling system 3 is connected with a medical optical fiber 4.

In an embodiment of the present invention, the connection between the indication optical semiconductor laser 101, the wavelength division multiplexer 102, the mode field adapter 103, the first semiconductor laser pump source 104, the forward pump combiner 105, the high-reflectivity fiber grating 106, the thulium-doped fiber 107, the low-reflectivity fiber grating 108, the reverse pump combiner 109, the second semiconductor laser pump source 110, the first cladding pump stripper 111, the second cladding pump stripper 112, and the energy transmission fiber 113 is performed by optical fibers, so as to improve the compactness of the thulium-doped fiber laser system 1. In addition, the indicating light semiconductor laser 101 may be used to emit indicating light to provide a laser output position locating function. In order to improve the positioning effect, the light output from the indicator light semiconductor laser 101 may be green light, and the wavelength of the light output from the indicator light semiconductor laser 101 may be 500nm or more and 550nm or less. For example, the wavelength may be 500nm, 510nm, 520nm, 530nm, 540nm, or 550nm, but it may be any value within the above range. The wavelength division multiplexer 102 may be configured to couple the indication light into the thulium-doped fiber laser system 1, and simultaneously may also lead out the reflected signal light from another port, so as to avoid damage to the indication optical semiconductor laser 101. Mode field adapter 103 may be used to match a small core diameter fiber to a large mode area fiber for coupling wavelength division multiplexer 102 to subsequent devices. The first semiconductor laser pump source 104 may be configured to provide pumping energy to the thulium doped fiber 107, wherein the pumping wavelength of the first semiconductor laser pump source 104 may be greater than or equal to 780nm and less than or equal to 800nm, so that the wavelength is within the absorption bandwidth of thulium ions to facilitate absorption of the thulium doped fiber 107. Also, the first semiconductor laser pump source 104 can be used by a plurality of parallel depending on the output power situation. A forward pumping combiner 105 may be used to couple light emitted by the first semiconductor laser pump source 104 and the indicator optical semiconductor laser 101 into the thulium doped fiber 107, with the output fiber of the forward pumping combiner 105 matching the core/cladding size of the large mode area thulium doped fiber 107. The highly reflective fiber grating 106 may be used as a highly reflective part of the resonant cavity of the thulium doped fiber laser system 1 to provide positive feedback, and in combination with the low reflective fiber grating 108, to form laser oscillation from the spontaneously radiated light. The fiber core diameter/cladding size of the highly reflective fiber grating 106 is matched with the large-mode area thulium-doped fiber 107. The thulium-doped optical fiber 107 is a gain medium of the thulium-doped optical fiber laser system 1, and can realize population inversion after absorbing energy of a pumping source, so as to generate spontaneous radiation, and form laser oscillation by combining with a resonant cavity of a laser. The thulium-doped fiber 107 has thulium ions as the dopant ions, so that the thulium-doped fiber can radiate light in the wavelength range of 1900-2100 nm. The low-reflection fiber grating 108 may be used as a coupling output portion of the resonant cavity of the thulium-doped fiber laser system 1, and is used to provide partial positive feedback, and in combination with the high-reflection fiber grating 106, the spontaneous emission light forms laser oscillation and is used as a laser output port. Wherein, the fiber core diameter/cladding size of the low-reflection fiber grating 108 is matched with the large-mode area thulium-doped fiber 107. The second semiconductor laser pump source 110 may also be configured to provide pumping energy to the thulium doped fiber 107, wherein the pumping wavelength of the second semiconductor laser pump source 110 may be greater than or equal to 780nm and less than or equal to 800nm, so that the wavelength is within the absorption bandwidth of thulium ions to facilitate absorption by the thulium doped fiber 107. Also, the second semiconductor laser pump source 110 may be used in parallel by a plurality depending on the output power situation. The counter-pumping combiner 109 can couple the pumping light of the second semiconductor laser pumping source 110 into the thulium-doped fiber 107 from the direction opposite to the signal output (which can also be said to be opposite to the direction in which the pumping light of the first semiconductor laser pumping source 104 enters the thulium-doped fiber 107), so as to make up for the shortage of the power of the first semiconductor laser pumping source 104, and the output fiber of the counter-pumping combiner 109 is matched with the fiber core/cladding sizes of the signal fiber and the thulium-doped fiber 107. The first cladding pump stripper 111 may be used to strip off cladding pump light remaining during back pumping to prevent damage to the device. Wherein the core/cladding size of the first cladding pump stripper 111 matches the large mode area thulium doped fiber 107. The second cladding pump stripper 112 can be used to strip the cladding pump light remaining during forward pumping to prevent damage to the device. Wherein the core/cladding size of the second cladding pump stripper 112 matches the large mode area thulium doped fiber 107. The energy transfer fiber 113 may be used to transmit the light output by the thulium doped fiber laser system 1 to the laser coupling system 3. The driving system 2 can provide driving currents for the first semiconductor laser pumping source 104, the second semiconductor laser pumping source 110 and the indicating optical semiconductor laser 101 of the thulium-doped fiber laser system 1, so that continuous power supply and modulation pulse signal power supply can be realized, and thus the thulium-doped fiber laser system 1 can work in a continuous output state and a pulse output state, the repetition frequency adjusting range is 0-2000Hz, and the pulse width is 100 mus-1 ms. The laser coupling system 3 can be used for realizing the coupling butt joint of the light emitted by the thulium-doped fiber laser system 1 and the medical optical fiber 4, and can realize the low-loss butt joint of the optical fiber with the core diameter of 50-1000 microns, thereby being beneficial to ensuring the transmission efficiency of the light. The medical optical fiber 4 can be used for guiding light output by the laser into an action part (namely, the laser coupling system 3 is used for realizing coupling with light output by the thulium-doped optical fiber laser system 1, and then the laser coupling system is combined with other medical tools to act on an affected part), the diameter of the fiber core of the medical optical fiber 4 which can be used can be more than or equal to 50 mu m and less than or equal to 1000 mu m, so that the fiber core of the medical optical fiber 4 is relatively small, the phenomenon that the medical optical fiber occupies a large part of the inner channel of a ureter soft lens when being used for treatment is avoided, the flow rate of physiological saline is limited, and the broken stone cannot be timely discharged to limit the operation visual field of a doctor is avoided. The obscured surgical field also increases the potential for perforation of the ureter wall and increases the time of the procedure. Therefore, the medical optical fiber 4 arranged in this way is beneficial to improving the safety and efficiency in the treatment process. Moreover, the power density acting on the surface of the calculus can be improved under the same power level. The control system 5 can be used to control the working state of the thulium-doped fiber laser treatment device 100, and improve the automation degree of the thulium-doped fiber laser treatment device 100. For example: the control system 5 can control the start and pause of the driving system 2 of the driving system, or control the driving system 2 to perform continuous power supply or modulation pulse signal power supply on the thulium-doped fiber laser system 1, thereby realizing that the laser of the thulium-doped fiber laser system 1 runs in a continuous output state or a pulse state mode.

When the thulium-doped fiber laser therapy device 100 of the present invention is in use, since the thulium-doped fiber laser system 1 includes the indicating optical semiconductor laser 101, the wavelength division multiplexer 102, the mode field adapter 103, the first semiconductor laser pump source 104, the forward pump combiner 105, the highly reflective fiber grating 106, the thulium-doped fiber 107, the low reflective fiber grating 108, the backward pump combiner 109, the second semiconductor laser pump source 110, the first cladding pump stripper 111, the second cladding pump stripper 112, and the energy-transmitting fiber 113, the first semiconductor laser pump source 104 and the second semiconductor laser pump source 110 of the thulium-doped fiber laser system 1 emit pump light under the driving of the driving system 2, and are coupled into the thulium-doped fiber 107 with a large mode area through the forward pump combiner 105 and the backward pump combiner 109, respectively, the pump light excites thulium ions of the thulium-doped fiber 107 to realize energy level transition, further, the light with the wavelength between 1900-2100nm is emitted, laser oscillation output is realized under the action of the high-reflection and low-reflection fiber grating 108, and the rest of the pump light is stripped through the first cladding pump stripper 111 and the second cladding pump stripper 112.

That is, the thulium-doped fiber laser system 1 of the thulium-doped fiber laser therapy device 100 in the present embodiment can emit laser with a wavelength within the range of 1900-2100nm under the driving of the driving system 2, wherein the laser includes a high absorption peak 1940nm of water, so that the fiber laser beam quality is better, and the fiber laser beam can be coupled with the medical optical fiber 4 with a smaller fiber core, thereby greatly enhancing the operation effect and efficiency. Moreover, the thulium-doped fiber laser system 1 can also achieve continuous and pulsed laser output. Wherein, the continuous laser output state can realize the tissue cutting and hemostasis function, and the pulse laser output state can realize the lithotripsy function, thereby leading the thulium doped optical fiber laser treatment device 100 to achieve the integrated functions of tissue cutting, lithotripsy and hemostasis. In order to ensure sufficient output power, the first semiconductor laser pump source 104 and the second semiconductor laser pump source 110 are respectively arranged at two ends to make up for the deficiency of the output power. In addition, the whole laser system is an all-fiber device, the structure is relatively compact, the service life is relatively long, and therefore the complex maintenance process in the later period can be avoided, and the application cost performance in the medical fields of laser tissue cutting, stone breaking and the like is greatly enhanced. Further, the thulium-doped fiber laser treatment device 100 in the present solution further includes a control system 5, and the control system 5 can automatically and accurately control the driving system 2 and the like to perform corresponding work, thereby facilitating the improvement of the automation degree and the working stability of the thulium-doped fiber laser treatment device 100.

In an embodiment of the present invention, the thulium-doped fiber laser therapy device 100 further includes a cooling system 6, and the cooling system 6 is connected to the thulium-doped fiber laser system 1, and is used for cooling and dissipating heat of the first semiconductor laser pump source 104, the thulium-doped fiber 107, and the second semiconductor laser pump source 110.

It can be understood that the cooling system 6 can cool the first semiconductor laser pump source 104, the thulium doped fiber 107 and the second semiconductor laser pump source 110, and take away the heat generated by the thulium doped fiber laser system 1 in the working process, so as to output the laser with the power that can be stabilized by the thulium doped fiber laser system 1, thereby being beneficial to ensuring the stability and high efficiency of the working of the thulium doped fiber laser treatment device 100.

In an embodiment of the invention, the cooling medium of the cooling system 6 is water.

It can be understood that the cooling medium of the cooling system 6 is set to be water, and the specific heat capacity of the water is relatively large, so that the cooling system has relatively strong heat absorption capacity, thereby being convenient for taking away a large amount of heat generated by the thulium-doped fiber laser system 1 during working, and improving the heat dissipation effect of the cooling system 6 on the thulium-doped fiber laser system 1. In addition, water is also common in daily life, so that the water is convenient to obtain, and the manufacturing convenience of the cooling system 6 is improved, and the manufacturing cost is reduced. Wherein, a cooling channel can be arranged in the cooling system 6, and the cooling system can be further connected with a water inlet pipe and a water outlet pipe so as to lead cooling medium water to flow in the cooling channel and take away heat through the thulium-doped fiber laser system 1. Of course, it should be noted that the present application is not limited thereto, and in other embodiments, the cooling medium of the cooling system 6 may be other types of cooling liquid. Or the cooling medium may also be wind, and at this time, the thulium-doped fiber laser system 1 may be cooled by the wind blown out by the fan. Further, the cooling system 6 may also be connected to the control system 5, so that the operation of the cooling system 6, such as start-up and pause, etc., is controlled by the control system 5.

Referring to fig. 1, in an embodiment of the present invention, the thulium doped fiber laser therapy apparatus 100 further includes a power-temperature monitoring system 7, the power-temperature monitoring system 7 is connected to the thulium doped fiber laser system 1, and the power-temperature monitoring system 7 is configured to detect an output power and an operating temperature of the thulium doped fiber laser system 1 during a laser operation process.

It can be understood that the output power of the thulium-doped fiber laser system 1 during the laser operation process and the working temperature of the optical module can be detected through the power-temperature monitoring system 7, and then feedback is provided for compensation, so that the output power of the thulium-doped fiber laser system 1 is stabilized and the safety performance is ensured. The power-temperature monitoring system 7 may specifically include a power detector and a temperature sensor, so that the power of the thulium doped fiber laser system 1 can be detected by the power detector, and the temperature of the thulium doped fiber laser system 1 can be detected by the temperature sensor.

Referring to fig. 1, in an embodiment of the present invention, the thulium doped fiber laser therapy apparatus 100 further includes a safety protection system 8, the safety protection system 8 is connected to the power-temperature monitoring system 7 and the control system 5, and the safety protection system 8 is configured to analyze and feed back data detected by the power-temperature monitoring system 7 to the control system 5.

It can be understood that the safety protection system 8 can receive the signal feedback of the working state of the thulium-doped fiber laser system 1 monitored by the power-temperature monitoring system 7, analyze and feed back the signal feedback, when the working abnormality of the thulium-doped fiber laser system 1 is found, a warning can be timely sent out, and the control system 5 is used for implementing the power-off operation on the driving system 2, so that the thulium-doped fiber laser system 1 does not work in a light-emitting mode any more, and the use safety of the thulium-doped fiber laser treatment device 100 is further improved. Wherein, can have the data comparison module in the safety protection system 8, power and temperature value when the module can preset thulium-doped fiber laser system 1 and be in normal operating condition are compared to data, later when receiving the operating condition data of thulium-doped fiber laser system 1 that power-temperature monitoring system 7 transmitted in safety protection system 8, can compare this transmission operating condition data and preset power and temperature value to judge whether the work of thulium-doped fiber laser system 1 appears unusually, and can send out the police dispatch newspaper through the siren when appearing unusually. Further, the safety protection system 8 may be connected to the cooling system 6, so as to detect the operating state of the cooling system 6 through the safety protection system 8 and transmit the operating state of the cooling system 6 to the control system 5. For example, it may be detected whether the cooling system 6 is started after the whole machine is started.

Referring to fig. 1, in an embodiment of the present invention, the thulium doped fiber laser therapy apparatus 100 further includes two switches 9, both of the switches 9 are connected to the control system 5, one of the two switches 9 is used for controlling the laser of the thulium doped fiber laser system 1 to operate in a continuous manner, and the other of the two switches 9 is used for controlling the laser of the thulium doped fiber laser system 1 to operate in a pulse state.

It will be appreciated that the two switches 9 are arranged such that one of them, when depressed, can control the laser of the thulium doped fiber laser system 1 to operate in a continuous manner, such that the thulium doped fiber laser treatment device 100 is used for cutting and hemostasis; after the other one of the two is pressed, the laser of the thulium-doped fiber laser system 1 can be controlled to operate in a pulse state mode, so that the thulium-doped fiber laser treatment device 100 is used for lithotripsy. The working principle can be as follows: after the switch 9 is pressed, the power can be transmitted to the control system 5, and then the control system 5 controls the driving system 2 to continuously supply power or modulate pulse signals to the thulium-doped fiber laser system 1 according to the pressing of the two switches 9, so that the laser of the thulium-doped fiber laser system 1 runs in a continuous output state or a pulse state mode. In one embodiment of the present invention, both switches 9 are foot switches. Because the foot switch is trampled through user's foot and is pressed the drive for the user still can come to press two switches 9 through the foot when inconvenient the operation of hand, thereby has improved the convenience of pressing two switches 9. In addition, since the foot switch is generally disposed at the bottom of the thulium-doped fiber laser therapy device 100, the possibility of being pressed can be reduced, which is beneficial to ensure that the thulium-doped fiber laser therapy device 100 stably operates in a continuous output state or in a pulse state. Of course, it should be noted that the present application is not limited thereto, and in other embodiments, the two switches 9 may be configured as buttons.

Referring to fig. 1, in an embodiment of the present invention, the thulium doped fiber laser therapy apparatus 100 further includes a display operation system 10, and the display operation system 10 is connected to the control system 5.

It can be understood that, the operating system 10 can display the working status of the thulium doped fiber laser treatment device 100 for the user to visually check, so as to facilitate the user to know the working status of the thulium doped fiber laser treatment device 100. Moreover, the display operation system 10 can also be used for the user to input corresponding instructions so as to control the thulium-doped fiber laser treatment device 100 to work through the control system 5. That is, the display operating system 10 is configured to implement the functions of the human-computer interaction and joint control system 5. For example: the laser working mode setting (running in a continuous mode or a pulse mode), the adjustment of laser parameters, the starting and the adjustment of the cooling system 6, the monitoring of the working state of the whole machine and the like can be realized.

In an embodiment of the present invention, the display operating system 10 includes a touch display screen.

It can be understood that the touch display screen can be configured to display the operating status of the thulium-doped fiber laser therapy device 100 to the user, and can also directly perform input operations of corresponding instructions (e.g., start and shutdown of the whole device, setting of laser operating mode, adjustment of laser parameters, etc.) on the touch display screen, thereby improving convenience of viewing and controlling. Of course, the present application is not limited thereto, and in other embodiments, the display operation system 10 may also include a common display screen and keys, and at this time, the display screen may display the working state of the thulium-doped fiber laser therapy apparatus 100, and the keys may be used to input corresponding instructions.

Referring to fig. 1, in an embodiment of the invention, the thulium doped fiber laser therapy apparatus 100 further includes a power supply system 11, and the power supply system 11 is connected to the control system 5, the cooling system 6 and the driving system 2.

It is understood that an external power supply line can be connected through the power supply system 11 to provide power supply for the whole system. At this time, the power supply system 11 supplies power intensively and uniformly, so that the arrangement of the power supply line of the thulium-doped fiber laser treatment device 100 can be simplified, and the convenience of manufacturing and molding the thulium-doped fiber laser treatment device 100 can be improved.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.