CN116725659A - Semiconductor laser operation system - Google Patents
Semiconductor laser operation system Download PDFInfo
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- CN116725659A CN116725659A CN202310844755.9A CN202310844755A CN116725659A CN 116725659 A CN116725659 A CN 116725659A CN 202310844755 A CN202310844755 A CN 202310844755A CN 116725659 A CN116725659 A CN 116725659A
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 193
- 239000013307 optical fiber Substances 0.000 claims abstract description 97
- 230000003287 optical effect Effects 0.000 claims abstract description 87
- 230000005540 biological transmission Effects 0.000 claims abstract description 26
- 238000002430 laser surgery Methods 0.000 claims abstract description 22
- 238000010168 coupling process Methods 0.000 claims description 150
- 238000005859 coupling reaction Methods 0.000 claims description 149
- 230000008878 coupling Effects 0.000 claims description 148
- 239000000835 fiber Substances 0.000 claims description 55
- 210000001503 joint Anatomy 0.000 claims description 19
- 230000009977 dual effect Effects 0.000 claims description 10
- 238000005520 cutting process Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- 230000017525 heat dissipation Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000005253 cladding Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000023597 hemostasis Effects 0.000 description 6
- 238000001990 intravenous administration Methods 0.000 description 6
- 238000000608 laser ablation Methods 0.000 description 6
- 102000001554 Hemoglobins Human genes 0.000 description 3
- 108010054147 Hemoglobins Proteins 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 208000003322 Coinfection Diseases 0.000 description 1
- 206010020843 Hyperthermia Diseases 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000036031 hyperthermia Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
- A61B18/22—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00577—Ablation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00601—Cutting
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00607—Coagulation and cutting with the same instrument
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/0091—Handpieces of the surgical instrument or device
- A61B2018/00916—Handpieces of the surgical instrument or device with means for switching or controlling the main function of the instrument or device
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/0091—Handpieces of the surgical instrument or device
- A61B2018/00916—Handpieces of the surgical instrument or device with means for switching or controlling the main function of the instrument or device
- A61B2018/00958—Handpieces of the surgical instrument or device with means for switching or controlling the main function of the instrument or device for switching between different working modes of the main function
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Otolaryngology (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Laser Surgery Devices (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The invention discloses a semiconductor laser surgery system, which comprises: the semiconductor laser comprises a semiconductor laser, a transmission optical fiber, an optical coupler, a laser optical fiber, a controller, a thermistor, a semiconductor refrigerator and a heat dissipation block, wherein one end of the semiconductor laser is connected to one end of the optical coupler through a transmission optical fiber circuit, the laser optical fiber is connected to the other end of the optical coupler, the laser optical fiber is used for outputting laser coupled by the optical coupler, the controller is connected to the other end of the semiconductor laser, the controller is used for controlling the semiconductor laser to generate laser, the wavelength range of the laser generated by the semiconductor laser is 1930nm +/-40 nm, the semiconductor laser is coupled by a plurality of semiconductor laser bars or a plurality of laser diodes, the semiconductor laser outputs the coupled laser, and the coupled laser power is not lower than 2.8W-33W, and the beneficial effects of the semiconductor laser are that: the invention has optimal thermal effect and higher surgical cutting efficiency compared with other commonly adopted near infrared laser surgical systems.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a semiconductor laser surgery system.
Background
The laser surgery adopts the absorption peak of hemoglobin or the absorption peak of water, and the biological tissue is coagulated, vaporized and carbonized by the instant hyperthermia generated by the strong absorption of the hemoglobin or the water to the laser energy, so as to achieve the surgery aims of laser hemostasis, ablation and cutting. The absorption peak of hemoglobin is suitable for biological tissue with abundant blood, and is usually 405nm, 420nm or 450nm. The absorption peak of water is suitable for other biological tissues, and near infrared laser wavelengths of 808nm, 980nm, 1064nm, 1472nm and the like are generally adopted at present. The laser operation incision is small, bleeding is avoided, secondary infection is avoided, and the minimally invasive operation under most scenes can be realized by matching with an endoscope. Compared with other lasers, the semiconductor laser has the advantages of small volume, high efficiency, simple thermal management, easy portability and the like, and is an ideal light source in laser surgery.
Fig. 1 shows the absorption peak of water, and it can be seen that the optimum absorption peak of water in the near-red band is near 1930nm, and in recent years 1920nm semiconductor laser wavelengths have been commercialized, closer to 1930nm and the like than 1470nm, 808nm, 980nm and 1064nm wavelengths in the near-infrared band, and the absorption coefficient of 1920nm is 4 times that of 1470nm and 250 times or more that of 980nm, so that it is expected to reduce the power of laser surgery by at least 1/4 or less at the same cutting efficiency. The higher the absorption coefficient of biological tissue to laser, the more concentrated the thermal effect of biological tissue, on one hand, the cutting efficiency is improved, and on the other hand, the damage to surrounding normal tissues can be reduced, and no high-power semiconductor laser operation system aiming at the 1930nm water absorption peak exists at present.
Disclosure of Invention
The invention aims to provide a semiconductor laser surgery system, which has poor heat effect concentration effect, improves the heat effect concentration performance of the semiconductor laser surgery system and improves the use efficiency of the semiconductor laser surgery system.
The invention is realized by the following technical scheme:
a semiconductor laser surgery system comprising:
a semiconductor laser for generating laser light;
one end of the semiconductor laser is connected to one end of the optical coupler through a transmission optical fiber line, and the optical coupler is used for receiving the laser generated by the semiconductor laser;
the laser optical fiber is connected to the other end of the optical coupler and is used for outputting laser coupled by the optical coupler;
the controller is connected with the other end of the semiconductor laser in a circuit manner and is used for controlling the semiconductor laser to generate laser;
the thermistor is fixedly arranged at the other end of the semiconductor laser, and a thermistor circuit is connected with the controller;
the semiconductor refrigerator is fixedly arranged on the semiconductor laser, a semiconductor refrigerator circuit is connected to the controller, and a radiating block is connected to the semiconductor refrigerator.
Optionally, the controller circuit is connected with a single foot switch and a double foot switch, and the single foot switch is used for controlling the laser generated by the semiconductor laser to continuously output; the dual foot switch is used for controlling the laser quasi-continuous triggering mode output or the single triggering mode output generated by the semiconductor laser, wherein under the quasi-continuous triggering mode, when the dual foot switch is continuously stepped down, the semiconductor laser emits light for 1s and extinguishes light for 1s, and the dual foot switch controls the semiconductor laser to emit laser in a quasi-continuous mode with the period of 2 s.
Optionally, the wavelength range of the laser generated by the semiconductor laser is 1930nm plus or minus 40nm, the semiconductor laser is formed by coupling a plurality of low-power semiconductor laser bars or a plurality of low-power laser diodes, the semiconductor laser outputs the coupled laser, and the laser power generated by a single semiconductor laser bar or a plurality of laser diodes is greater than or equal to 0.8W.
Optionally, the laser power of the output coupled optical coupler is greater than or equal to 2.8W-33W, the core diameter of the laser fiber is 200 μm,300 μm,400 μm,600 μm or 800 μm medical laser fiber, and the laser power density of the laser fiber is 2200W/cm 2 -26700W/cm 2 Within a range of (2).
Optionally, the semiconductor laser is provided with a semiconductor laser bar, a micro lens, a first coupling lens, a coupling optical fiber and an SMA905 plug;
the micro lens, the first coupling lens and the coupling optical fiber are sequentially arranged between one end of the semiconductor laser bar and the SMA905 plug, the controller is connected to the other end of the semiconductor laser bar in a circuit mode, two ends of the micro lens are respectively in butt joint with one end of the semiconductor laser bar and the other end of the first coupling lens, one end of the first coupling lens is in butt joint with the other end of the coupling optical fiber, one end of the coupling optical fiber is connected in the SMA905 plug, or one end of the coupling optical fiber is connected to one end of the optical fiber power coupler, the other end of the optical fiber power coupler is coupled to a single coupling optical fiber, and the single coupling optical fiber is inserted in the SMA905 plug.
Optionally, a group of optical coupling units are formed by combining the semiconductor laser bar with a coupling optical fiber through a micro lens and a first coupling lens, one ends of a plurality of groups of optical coupling units are connected in one SMA905 plug, or one ends of a plurality of groups of optical coupling units are connected to one end of an optical fiber power coupler, and the other end of the optical fiber power coupler is inserted in the SMA905 plug through a coupling optical fiber.
Optionally, the semiconductor laser is provided with a coupling optical fiber, an SMA905 plug, a semiconductor laser diode, a reflecting mirror and a second coupling lens;
the semiconductor laser diode comprises an SMA905 plug, a reflecting mirror, a second coupling lens and a coupling optical fiber, wherein the reflecting mirror, the second coupling lens and the coupling optical fiber are sequentially arranged between one end of the semiconductor laser diode and the SMA905 plug, a controller circuit is connected to the other end of the semiconductor laser diode, two ends of the reflecting mirror are respectively in butt joint with one end of the semiconductor laser diode and the other end of the second coupling lens, one end of the second coupling lens is in butt joint with the other end of the coupling optical fiber, and one end of the coupling optical fiber is connected in the SMA905 plug.
Optionally, the semiconductor laser diodes, the reflectors, the second coupling lens and the coupling optical fiber are combined into a group of optical coupling units, one ends of the optical coupling units are connected in one SMA905 plug, or one ends of the optical coupling units are connected to one end of an optical fiber power coupler, and the other end of the optical fiber power coupler is inserted in the SMA905 plug through one coupling optical fiber.
Optionally, the optical coupler has an SMA905 receptacle, a lens, and a 45 degree dichroic mirror;
the SMA905 socket is arranged outside the optical coupler, the lens and the 45-degree dichroic mirror are arranged inside the optical coupler, the SMA905 plug is inserted into the SMA905 socket, the SMA905 plug is in butt joint with one end of the lens, the other end of the lens is in butt joint with the 45-degree dichroic mirror, the SMA905 socket and the lens are arranged into a group of optical coupling modules, the optical coupling modules are provided with three groups, and each group of optical coupling modules are in butt joint with the 45-degree dichroic mirror.
Optionally, the core diameter of the laser fiber is greater than or equal to the core diameter of the transmission fiber.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the invention adopts a single foot switch or a double foot switch to control a controller, the controller gives current to a semiconductor laser, the semiconductor laser generates laser with 1930 nm+/-40 nm wavelength and high power above 2.8W-33W, the semiconductor laser high power laser is coupled by a plurality of low power semiconductor laser bars or a plurality of single tube semiconductor laser diodes, the coupled high power laser is transmitted to an optical coupler through a transmission optical fiber, the optical coupler transmits visible indication light and the coupled high power laser to a laser optical fiber, the laser optical fiber is a medical laser optical fiber, and an operator directly irradiates biological tissues by holding the medical laser optical fiber to perform operation. Because the laser with 1930nm +/-40 nm wavelength and 2.8W-33W power generated in the semiconductor laser has optimal water absorption in the near infrared band, and the semiconductor laser is internally coupled with high-power laser, the thermal effect concentration of the semiconductor laser operation system is improved, and the cutting efficiency of the semiconductor laser operation system is improved when an operator holds a medical laser fiber to perform an operation.
2. The invention adopts a single foot switch and a double foot switch to control the controller, the controller gives current to the semiconductor laser, the single foot switch is used for controlling the laser continuous output generated by the semiconductor laser, the double foot switch is used for controlling the laser quasi-continuous triggering mode output or the single triggering mode output generated by the semiconductor laser, the single foot switch is adopted to realize the cutting operation of biological tissues, and the double foot switch is adopted to realize intravenous laser ablation (EVLA) or realize the hemostasis of the operation.
Drawings
In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the drawings that are needed in the examples will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and that other related drawings may be obtained from these drawings without inventive effort for a person skilled in the art. In the drawings:
FIG. 1 is a wave diagram of laser wavelength and water absorption coefficient of biological tissue;
FIG. 2 is a diagram of the overall circuit connection architecture of the present invention;
FIG. 3 is a block diagram of one embodiment of the interior of a semiconductor laser of the present invention;
FIG. 4 is a block diagram of another embodiment of the interior of a semiconductor laser of the present invention;
FIG. 5 is a block diagram of one embodiment of a coupling optical fiber and SMA905 plug of the present invention;
FIG. 6 is a block diagram of another embodiment of a coupling optical fiber and SMA905 plug of the present invention;
fig. 7 is an internal structural view of the optical coupler of the present invention.
In the drawings, the reference numerals and corresponding part names:
1-semiconductor laser, 2-transmission fiber, 3-optical coupler, 4-laser fiber, 5-controller, 6-single foot switch, 7-duplex foot switch, 8-thermistor, 9-semiconductor refrigerator, 10-heat sink, 11-semiconductor laser bar, 12-microlens, 13-first coupling lens, 14-coupling fiber, 15-SMA905 plug, 16-semiconductor laser diode, 17-reflector, 18-second coupling lens, 19-fiber power coupler, 20-SMA905 socket, 21-lens, 22-45 degree dichroic mirror, 23-visible indication light, 24-surgical laser.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present invention and the descriptions thereof are for illustrating the present invention only and are not to be construed as limiting the present invention.
Example 1
As shown in fig. 2, a semiconductor laser surgery system, comprising: the semiconductor laser comprises a semiconductor laser 1, a transmission optical fiber 2, an optical coupler 3, a laser optical fiber 4, a controller 5, a single foot switch 6, a double foot switch 7, a thermistor 8, a semiconductor refrigerator 9 and a heat dissipation block 10, wherein the semiconductor laser 1 is used for generating laser, one end of the semiconductor laser 1 is connected to one end of the optical coupler 3 through a transmission optical fiber 2 line, the optical coupler 3 is used for receiving the laser generated by the semiconductor laser 1, the laser optical fiber 4 is connected to the other end of the optical coupler 3, the laser optical fiber 4 is used for outputting the laser coupled by the optical coupler 3, the controller 5 is in circuit connection with the other end of the semiconductor laser 1, the controller 5 is used for controlling the semiconductor laser 1 to generate laser, the thermistor 8 is fixedly arranged on the other end of the semiconductor laser 1, the thermistor 8 is in circuit connection with the controller 5, the semiconductor refrigerator 9 is fixedly arranged on the semiconductor laser 1, the semiconductor refrigerator 9 is in circuit connection with the controller 5, and the heat dissipation block 10 is connected to the semiconductor refrigerator 9.
The controller 5 is connected with a single foot switch 6 and a duplex foot switch 7 in a circuit manner, and the single foot switch 6 is used for controlling the laser generated by the semiconductor laser 1 to continuously output; the dual foot switch 7 is used for controlling the output of the laser quasi-continuous triggering mode or the output of the single triggering mode generated by the semiconductor laser 1, wherein under the quasi-continuous triggering mode, when the dual foot switch 7 is continuously stepped down, the semiconductor laser emits light for 1s and extinguishes light for 1s, and the dual foot switch 7 controls the semiconductor laser 1 to emit laser in a quasi-continuous mode with the period of 2 s.
When the single foot switch 6 or the duplex foot switch 7 is stepped on, the controller 5 energizes the semiconductor laser 1, the semiconductor laser 1 generates and emits 1930 nm+/-40 nm high-power laser, the high-power laser is transmitted to the optical coupler 3 through the transmission optical fiber 2, the optical coupler 3 couples the high-power laser generated by the semiconductor laser 1, and the optical coupler 3 is connected with the medical laser fiber 4, so that the high-power laser generated by the semiconductor laser 1 is finally output through the laser fiber 4, and an operator holds the medical laser fiber 4 to directly irradiate biological tissues to perform operation. The thermistor 8 is stuck to the outer end face of the semiconductor laser 1, the semiconductor refrigerator 9 is placed at the bottom of the semiconductor laser 1, the semiconductor refrigerator 9 transfers heat in the semiconductor laser 1, the radiating block 10 is composed of a large number of metal blades, the semiconductor refrigerator 9 transfers heat in the semiconductor laser 1 to the radiating block 10, the radiating block 10 discharges the heat, the controller 5 is an intelligent controller, and the controller 5 can control the operation of the semiconductor refrigerator 9 according to the heat in the semiconductor laser 1 detected by the thermistor 8.
The controller 5 includes a laser power supply for driving the operation of the semiconductor laser 1, and the controller 5 controls the power and output mode of the semiconductor laser 1 for generating laser light. The thermistor 8 and the semiconductor refrigerator 9 are connected to the controller 5 through a cable, and the temperature of the semiconductor laser 1 is controlled by a proportional-integral-derivative (PID) method. The single foot switch 6, the double foot switch 7 and the controller 5 are connected through cables to select an operation mode, the single foot switch 6 is adopted to realize the cutting operation of biological tissues, and the double foot switch 7 is adopted to realize intravenous laser ablation (EVLA) or to realize operation hemostasis.
The invention adopts the mode of combining the single foot switch 6 and the double foot switch 7 to realize the control of the operation mode, is applicable to a wider laser operation application range, and realizes the cutting operation of biological tissues by continuously outputting the laser mode of the single foot switch. The left side of the double foot switch 7 is used for realizing intravenous laser ablation (EVLA) of biological tissues in a quasi-continuous triggering output laser mode, and the right side of the double foot switch 7 is used for realizing single triggering output laser mode and realizing surgical hemostasis of biological tissues.
The wavelength range of the laser generated by the semiconductor laser 1 is 1930nm +/-40 nm, the semiconductor laser 1 is formed by coupling a plurality of low-power semiconductor laser bars 11 or a plurality of low-power laser diodes, the semiconductor laser 1 outputs laser, the laser power generated by a single low-power semiconductor laser bar 11 or a plurality of low-power laser diodes is more than or equal to 0.8W, the laser power after the coupling output by the optical coupler 3 is more than or equal to 2.8W-33W, the laser fiber 4 is a medical laser fiber with the core diameter of 400 mu m, and the laser power density emitted by the laser fiber 4 is 2200W/cm 2 -26700W/cm 2 Within a range of (2).
The diameter of the core diameter of the laser fiber 4 is larger than or equal to that of the transmission fiber 2, the medical laser fiber 4 can realize the output of high-power laser (1930 nm plus or minus 40 nm) of 2.7W-40W, and the medical laser fiber 4 with the diameter of 200 mu m,300 mu m,400 mu m,600 mu m or 800 mu m is generally adopted, wherein the diameter of the core diameter of the 200 mu m medical laser fiber 4 is 200 mu m, and the diameter of the cladding is 220 mu m; the 300 μm medical laser fiber 4 has a core diameter of 300 μm and a cladding diameter of 300 μm; the diameter of the core diameter of the 600 μm medical laser fiber 4 is 600 μm, and the diameter of the cladding is 660 μm; the diameter of the core of the 800 μm medical laser fiber 4 was 800 μm, and the diameter of the cladding was 880. Mu.m. When an intravenous laser ablation operation is performed, the medical laser fiber 4 needs to be marked with a length and a scale, and the minimum unit of the scale is smaller than or equal to 1mm.
Example 2
Based on embodiment 1, as shown in fig. 3, a semiconductor laser bar 11, a microlens 12, a first coupling lens 13, a coupling optical fiber 14, and an SMA905 plug 15 are provided in the semiconductor laser 1.
A micro lens 12, a first coupling lens 13 and a coupling optical fiber 14 are sequentially arranged between one end of the semiconductor laser bar 11 and the SMA905 plug 15, the controller 5 is in circuit connection with the other end of the semiconductor laser bar 11, the controller 5 supplies power to the semiconductor laser bar 11, the semiconductor laser bar 11 generates high-power laser, two ends of the micro lens 12 are respectively in butt joint with one end of the semiconductor laser bar 11 and the other end of the first coupling lens 13, one end of the first coupling lens 13 is in butt joint with the other end of the coupling optical fiber 14, one end of the coupling optical fiber 14 is connected in the SMA905 plug 15, and the high-power laser generated by the semiconductor laser bar 11 enters the SMA905 plug 15 after passing through the micro lens 12, the first coupling lens 13 and the coupling optical fiber 14.
The semiconductor laser bars 11, the micro lens 12, the first coupling lens 13 and the coupling optical fiber 14 are combined into a group of optical coupling units, a plurality of groups of optical coupling units, namely 7 groups of optical coupling units, are connected in an SMA905 plug 15, because the divergence of each semiconductor laser bar 11 in the two directions of a fast axis and a slow axis is greatly different, the beam parameter product in the slow axis direction is usually much larger than the beam parameter product in the fast axis direction, the emission light spot of each semiconductor laser bar 11 must be shaped through the micro lens 12, the beam parameter product of the fast axis and the slow axis of the emission light spot after shaping is smaller than that of the coupling optical fiber 14, the emission light spot is coupled into the coupling optical fiber 14 by the first coupling lens 13, and the coupling optical fibers 14 are directly inserted into the SMA905 plug 15.
Example 3
Based on the embodiments 1-2, this embodiment is an improvement over the semiconductor laser 1 of the embodiment 2, as shown in fig. 4, in that the semiconductor laser 1 has a coupling optical fiber 14, an SMA905 plug 15, a semiconductor laser diode 16, a reflecting mirror 17, and a second coupling lens 18.
A reflecting mirror 17, a second coupling lens 18 and a coupling optical fiber 14 are sequentially arranged between one end of the semiconductor laser diode 16 and the SMA905 plug 15, the controller 5 is in circuit connection with the other end of the semiconductor laser diode 16, the controller 5 supplies power to the semiconductor laser diode 16, the semiconductor laser diode 16 generates high-power laser, two ends of the reflecting mirror 17 are respectively in butt joint with one end of the semiconductor laser diode 16 and the other end of the second coupling lens 18, one end of the second coupling lens 18 is in butt joint with the other end of the coupling optical fiber 14, one end of the coupling optical fiber 14 is connected in the SMA905 plug 15, and the high-power laser generated by the semiconductor laser diode 16 enters the SMA905 plug 15 after passing through the reflecting mirror 17, the second coupling lens 18 and the coupling optical fiber 14.
The multiple semiconductor laser diodes 16, the multiple mirrors 17, a second coupling lens 18 and a coupling optical fiber 14 are combined into a group of optical coupling units, and multiple groups of optical coupling units, namely 7 groups of optical coupling units, are connected in an SMA905 plug 15, and similarly, the divergence of each semiconductor laser diode 16 in the two directions of the fast axis and the slow axis is greatly different, and the beam parameter product in the slow axis is usually much larger than the beam parameter product in the fast axis, so that the reflection and the shaping of the emission light spot of each semiconductor laser diode 16 must be performed through the mirrors 17, the beam parameter product of the fast axis and the slow axis of the shaped emission light spot is smaller than that of the coupling optical fiber 14, the emission light spot is coupled into the coupling optical fiber 14 by using the second coupling lens 18, and the multiple coupling optical fibers 14 are directly inserted into the SMA905 plug 15.
Example 4
Based on embodiments 2-3, as shown in fig. 5, one end of the plurality of coupling fibers 14 of the fine core of the optical coupling unit is directly inserted into the SMA905 plug 15.
As shown in fig. 6, one end of the plurality of fine core coupling fibers 14 of the optical coupling unit 3 is connected to one end of one fiber power coupler 19, and the other end of the fiber power coupler 19 is coupled to a single or one thick core coupling fiber 14, and the single coupling fiber 14 is inserted into the SMA905 plug 15.
Example 5
Based on embodiment 4, the number of coupling fibers 14 depends on the number of semiconductor laser bars 11 or the number of semiconductor laser diodes 16. The plurality of coupling fibers 14 may be directly inserted into the SMA905 plug 15 or the plurality of fine core coupling fibers 14 may be coupled to a single thick core coupling fiber 14 via a fiber power coupler 19, with the single thick core coupling fiber 14 reinserted into the SMA905 plug 15. The fiber power coupler 19 is used to make the diameter of the laser fiber 4 at least 2 times larger than the diameter of the transmission fiber 2, so that the coupling output of more than 7 coupling fibers 14 can be realized.
Example 6
Based on examples 2-4, in order to achieve a high power laser output of more than 30W, a coupling of 7 semiconductor laser bars 11 of 1920nm was used. Each semiconductor laser bar 11 is composed of 8 light emitting units, the output light power of each light emitting unit is 0.8W, the light emitting length of each single semiconductor laser bar 11 is 5mm, the single semiconductor laser bar is coupled into the transmission optical fiber 2 after being shaped and focused, the core diameter of the transmission optical fiber 2 is 100 mu m (the diameter of the cladding is 110 mu m), and the coupling efficiency can reach 80%, so that the laser power of the single transmission optical fiber 2 is 5.44W.
The optical coupler 3 adopting 7*1 high-power laser realizes the coupling output of 7 paths of laser, the core diameter of the output transmission optical fiber 2 is 300 mu m, the coupling efficiency of the optical coupler 3 can reach 95%, and therefore, the laser power of the transmission optical fiber 2 after being coupled by the optical coupler 3 is 34W.
The medical laser fiber 4 selects an optical fiber with a 300 mu m core diameter or a 400 mu m core diameter, and the transmission fiber 2 with the core diameter of 300 mu m is connected through the optical coupler 3, and the coupling efficiency of the optical coupler 3 can reach 95 percent, so that the laser output of 32W can be obtained, and the purpose of laser surgery can be achieved.
Example 7
Based on embodiments 2-4, to achieve high power laser outputs of greater than 30W, multiple semiconductor laser diode 16 coupling techniques and fiber optic power couplers are employed. The emission power of the single semiconductor laser diode 16 is 0.8W, each semiconductor laser diode 16 adopts 8 light emitting units, each semiconductor laser diode 16 is coupled into the transmission optical fiber 2 with the core diameter of 100 μm (the cladding diameter is 110 μm), the coupling efficiency can reach 90%, and therefore, the laser power of the single transmission optical fiber 2 can reach 5.76W.
The optical coupler 3 adopting 7*1 high-power laser realizes the coupling output of 7 paths of laser, the output transmission optical fiber 2 selects 300 mu m core diameter, the coupling efficiency of the optical coupler 3 can reach 95%, and therefore, the laser power of the transmission optical fiber 2 after being coupled by the optical coupler 3 is 38W.
The medical laser optical fiber selects an optical fiber with a 300 mu m core diameter or a 400 mu m core diameter, and the transmission optical fiber 2 with the core diameter of 300 mu m is connected through the optical coupler 3, and the coupling efficiency of the optical coupler 3 can reach 95 percent, so that 36W laser output can be obtained, and the purpose of laser surgery can be achieved.
Example 8
Based on all the embodiments described above, as shown in fig. 7, the optical coupler 3 has an SMA905 receptacle 20, a lens 21, and a 45-degree dichroic mirror 22;
the SMA905 socket 20 is arranged outside the optical coupler 3, the lens 21 and the 45-degree dichroic mirror 22 are arranged inside the optical coupler 3, the SMA905 plug 15 is inserted into the SMA905 socket 20, the SMA905 plug 15 is in butt joint with one end of the lens 21, the other end of the lens 21 is in butt joint with the 45-degree dichroic mirror 22, the SMA905 socket 20 and the lens 21 are arranged into a group of optical coupling modules, each group of optical coupling modules is in butt joint with the 45-degree dichroic mirror 22.
The optical coupler 3 realizes the connection of the transmission optical fiber 2 and the medical laser optical fiber 4, the core diameter of the laser optical fiber 4 is larger than or equal to the total core diameter of the transmission optical fiber 2, the optical coupler 3 in the invention also couples visible indication light, generally adopts visible light with the wavelength of 532nm, 660nm or other wavelengths, the power of the visible indication light is smaller than 5mW, and the optical coupler is used for indicating surgical laser (1930 nm +/-40 nm) invisible to human eyes and positioning working positions in the surgical process.
In fig. 7, the surgical laser 24 enters the SMA905 socket 20 and the lens 21 on the left side of the optical coupler 3, the optical coupler 3 passes through the SMA905 socket 20 and the lens 21 on the left side and then passes through the 45-degree dichroic mirror 22, the surgical laser 24 is emitted from the lens 21 and the SMA905 socket 20 on the right side of the optical coupler 3, meanwhile, the visible indication light 23 enters the optical coupler 3 from the SMA905 socket 20 and the lens 21 on the front side of the optical coupler 3, the visible indication light 23 passes through the 45-degree dichroic mirror 22, and finally, the visible indication light 23 is emitted from the lens 21 and the SMA905 socket 20 on the right side of the optical coupler 3, and the 45-degree dichroic mirror 22 realizes the transmission of the surgical laser 24 and the reflection of the visible indication light 23, so as to realize the coaxial output of the surgical laser and the visible indication light.
The invention couples a plurality of optical coupling units into one SMA905 plug 15, namely, the combination and the coupling of a plurality of low-power optical coupling units into one SMA905 plug 15 realize the coupling with high power and high efficiency; fig. 6 only uses multiple optical coupling units in combination with the fiber power coupler 19, and combines multiple low power optical coupling units in combination with one fiber power coupler 19 to couple in one SMA905 plug 15 to achieve high power and high efficiency coupling.
Example 9
Aiming at the laser surgery system of a high-power semiconductor with no 1930nm water absorption peak at present, the invention provides the laser surgery system of the high-power semiconductor with the wavelength range of 1930nm +/-40 nm. The high-power semiconductor laser output is realized by adopting a semiconductor laser bar coupling technology (single-point optical power is 0.8W) or a plurality of low-power semiconductor laser diodes (single-tube optical power is 0.8W) coupling technology. The laser operation mode is realized by adopting a single foot switch and a double foot switch, and the single foot switch realizes high-power continuous output of high-power semiconductor laser and is used for the cutting operation of biological tissues; the dual foot switch is used for realizing the hemostasis of intravenous laser ablation (EVLA) and biological tissues by adopting a quasi-continuous output mode and a single-shot mode, the laser power is determined by the outer diameter of a blood vessel, and the laser power is larger as the outer diameter is larger, wherein the operation hemostasis of the single-shot mode is that when the foot switch is closed, only one laser pulse can be triggered, the pulse width is related to the laser power value, and the higher the laser power is, the shorter the pulse width is. The invention is suitable for endoscope operation, intravenous laser ablation (EVLA), open operation and the like, and has the advantages of wide applicable operation range, mobility, simple maintenance, long service life and the like.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. A semiconductor laser surgery system, comprising:
a semiconductor laser (1), the semiconductor laser (1) being for generating laser light;
an optical coupler (3), wherein one end of the semiconductor laser (1) is connected to one end of the optical coupler (3) through a transmission optical fiber (2) line, and the optical coupler (3) is used for receiving the laser generated by the semiconductor laser (1);
the laser optical fiber (4), the said laser optical fiber (4) connects to another end of the optical coupler (3), the laser optical fiber (4) is used for outputting the laser that the optical coupler (3) couples;
the controller (5) is in circuit connection with the other end of the semiconductor laser (1), and the controller (5) is used for controlling the semiconductor laser (1) to generate laser;
the thermistor (8) is fixedly arranged at the other end of the semiconductor laser (1), and the thermistor (8) is in circuit connection with the controller (5);
the semiconductor refrigerator (9) is fixedly arranged on the semiconductor laser (1), the semiconductor refrigerator (9) is connected to the controller (5) in a circuit mode, and the semiconductor refrigerator (9) is connected with the radiating block (10).
2. A semiconductor laser surgical system according to claim 1, characterized in that the controller (5) is electrically connected to a single foot switch (6) and a double foot switch (7), the single foot switch (6) being used for controlling the laser light generated by the semiconductor laser (1) to be continuously output; the dual foot switch (7) is used for controlling the output of a laser quasi-continuous triggering mode or the output of a single triggering mode generated by the semiconductor laser (1), wherein under the quasi-continuous triggering mode, when the dual foot switch (7) continuously steps down, the semiconductor laser emits light for 1s and extinguishes light for 1s, and the dual foot switch (7) controls the semiconductor laser (1) to emit laser in a quasi-continuous mode with the period of 2 s.
3. A semiconductor laser surgery system according to claim 1, wherein the wavelength range of the laser light generated by the semiconductor laser (1) is 1930nm ± 40nm, the semiconductor laser (1) is formed by coupling a plurality of semiconductor laser bars (11) or a plurality of laser diodes, the semiconductor laser (1) outputs the coupled laser light, and the laser power generated by a single semiconductor laser bar (11) or a plurality of laser diodes is greater than or equal to 0.8W.
4. A semiconductor laser surgery system according to claim 1, wherein the laser power of the output coupled optical coupler (3) is greater than or equal to 2.8W-33W, the core diameter of the laser fiber (4) is 200 μm,300 μm,400 μm,600 μm or 800 μm, the laser power density of the laser fiber (4) is 2200W/cm 2 -26700W/cm 2 Within a range of (2).
5. A semiconductor laser surgery system according to claim 1, characterized in that the semiconductor laser (1) has a semiconductor laser bar (11), a micro lens (12), a first coupling lens (13), a coupling fiber (14) and an SMA905 plug (15) inside;
the micro-lens (12), the first coupling lens (13) and the coupling optical fiber (14) are sequentially arranged between one end of the semiconductor laser bar (11) and the SMA905 plug (15), the controller (5) is connected to the other end of the semiconductor laser bar (11) in a circuit mode, two ends of the micro-lens (12) are respectively in butt joint with one end of the semiconductor laser bar (11) and the other end of the first coupling lens (13), one end of the first coupling lens (13) is in butt joint with the other end of the coupling optical fiber (14), one end of the coupling optical fiber (14) is connected in the SMA905 plug (15), or one end of the coupling optical fiber (14) is connected to one end of the optical fiber power coupler (19), the other end of the optical fiber power coupler (19) is coupled to a single coupling optical fiber (14), and the single coupling optical fiber (14) is inserted into the SMA905 plug (15).
6. A semiconductor laser surgery system according to claim 5, wherein a group of optical coupling units is formed from the semiconductor laser bar (11) through a micro lens (12), a first coupling lens (13) and a coupling optical fiber (14), wherein one ends of a plurality of groups of optical coupling units are connected in one SMA905 plug (15), or one ends of a plurality of groups of optical coupling units are connected to one end of an optical fiber power coupler (19), and the other end of the optical fiber power coupler (19) is inserted in the SMA905 plug (15) through one coupling optical fiber (14).
7. A semiconductor laser surgical system according to claim 1, characterized in that the semiconductor laser (1) has a coupling fiber (14), SMA905 plug (15), semiconductor laser diode (16), mirror (17) and a second coupling lens (18) inside;
the semiconductor laser diode (16) one end with be provided with in proper order between SMA905 plug (15) speculum (17), second coupling lens (18) and coupling optic fibre (14), controller (5) circuit connection is in the other end of semiconductor laser diode (16), and the both ends of speculum (17) dock with one end of semiconductor laser diode (16) respectively, the other end of second coupling lens (18), and the one end of second coupling lens (18) dock with the other end of coupling optic fibre (14), and the one end of coupling optic fibre (14) is connected in SMA905 plug (15).
8. A semiconductor laser surgery system according to claim 7, wherein a plurality of the semiconductor laser diodes (16), a plurality of mirrors (17), a second coupling lens (18) and a coupling optical fiber (14) are combined into a set of optical coupling units, one ends of a plurality of sets of the optical coupling units are connected in one SMA905 plug (15), or one ends of a plurality of sets of the optical coupling units are connected to one end of an optical fiber power coupler (19), and the other end of the optical fiber power coupler (19) is inserted in the SMA905 plug (15) through one coupling optical fiber (14).
9. A semiconductor laser surgery system according to claim 1, characterized in that the optocoupler (3) has SMA905 socket (20), lens (21) and 45 degree dichroic mirror (22);
the SMA905 socket (20) is arranged outside the optical coupler (3), the lens (21) and the 45-degree dichroic mirror (22) are arranged inside the optical coupler (3), the SMA905 plug (15) is inserted into the SMA905 socket (20), the SMA905 plug (15) is in butt joint with one end of the lens (21), the other end of the lens (21) is in butt joint with the 45-degree dichroic mirror (22), the SMA905 socket (20) and the lens (21) are arranged into a group of optical coupling modules, each group of optical coupling modules is in butt joint with the 45-degree dichroic mirror (22).
10. A semiconductor laser surgery system according to claim 1, characterized in that the core diameter of the laser fiber (4) is larger than or equal to the core diameter of the transmission fiber (2).
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| CN202310844755.9A CN116725659A (en) | 2023-07-11 | 2023-07-11 | Semiconductor laser operation system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310844755.9A CN116725659A (en) | 2023-07-11 | 2023-07-11 | Semiconductor laser operation system |
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| CN202310844755.9A Pending CN116725659A (en) | 2023-07-11 | 2023-07-11 | Semiconductor laser operation system |
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