CN109044526B - Dual wavelength laser and laser therapeutic instrument - Google Patents

Dual wavelength laser and laser therapeutic instrument Download PDF

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Publication number
CN109044526B
CN109044526B CN201810715657.4A CN201810715657A CN109044526B CN 109044526 B CN109044526 B CN 109044526B CN 201810715657 A CN201810715657 A CN 201810715657A CN 109044526 B CN109044526 B CN 109044526B
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laser
reflecting mirror
wavelength
mirror
optical fiber
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CN109044526A (en
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刘腾
刘明
刘普霞
袁哲
王占辉
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Realton Suzhou Medical Technology Co ltd
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Realton Suzhou Medical Technology Co ltd
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Priority to CN201810715657.4A priority Critical patent/CN109044526B/en
Priority to GB2014567.8A priority patent/GB2586364B/en
Priority to PCT/CN2018/098898 priority patent/WO2020006800A1/en
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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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00017—Electrical control of surgical instruments
    • A61B2017/00022—Sensing or detecting at the treatment site
    • A61B2017/00057—Light
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    • A61B2017/00973—Surgical instruments, devices or methods, e.g. tourniquets pedal-operated
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    • A61B2018/00005—Cooling or heating of the probe or tissue immediately surrounding the probe
    • A61B2018/00011—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids
    • A61B2018/00023—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids closed, i.e. without wound contact by the fluid
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    • 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
    • A61B2018/2065—Multiwave; Wavelength mixing, e.g. using four or more wavelengths
    • A61B2018/207—Multiwave; Wavelength mixing, e.g. using four or more wavelengths mixing two wavelengths
    • 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
    • A61B2018/2205—Characteristics of fibres
    • A—HUMAN NECESSITIES
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    • 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
    • A61B2018/2238—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 with means for selectively laterally deflecting the tip of the fibre
    • 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
    • A61B2018/2255—Optical elements at the distal end of probe tips
    • A61B2018/2272—Optical elements at the distal end of probe tips with reflective or refractive surfaces for deflecting the beam

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  • Lasers (AREA)

Abstract

The dual-wavelength laser and the laser therapeutic instrument have simple structure and high stability, and can switch and output green laser with high power of 532nm and near infrared laser with 1064nm through the movement of the movable reflecting lens at the first position and the second position. 532nm laser is used for soft tissue gasification excision, 1064nm laser is used for soft tissue cutting, hemostasis of great vessels and venous sinus to meet operation requirements, and becomes a better solution for soft tissue operation. The 532nm laser resonant cavity and the 1064nm laser resonant cavity share one pump, a Q switch and a rear cavity mirror, and one laser is changed into two lasers through one movable reflection lens, so that 532nm visible laser and 1064nm infrared laser can be respectively switched and output.

Description

Dual wavelength laser and laser therapeutic instrument
Technical Field
The application relates to the field of laser therapeutic equipment, in particular to a switchable wavelength optical fiber coupled dual-wavelength laser and a laser therapeutic equipment, which are used for treating soft tissue diseases and stopping bleeding, in particular to the treatment of benign prostatic hyperplasia.
Background
In recent years, the application of laser technology in the medical field has rapidly progressed, and in the soft tissue field, lasers are rapidly replacing electrotomes to be a gold standard for treatment. The laser has the characteristics of less bleeding, no risk of wound infection, no obturator reaction and the like, so that the laser soft tissue surgery is gradually outweighed in competition.
High power lasers of wavelength 2um, such as Ho of 100W: YAG holmium laser and Tm of 120W: the YAG laser has certain competitiveness in the application of the prostatoplasia excision operation. It is mainly absorbed by water in tissues, and the high absorption rate leads to deep and shallow tissues and poor hemostasis. The tissue excision effect is very strong, but the characteristics of poor coagulation and hemostasis and the action of the optical fiber on the tissue cause difficult operation and the like. Near infrared light with wavelength of 980 nm-1470 nm and tissue depth of 7-10 mm, which is favorable for hemostasis. Bulletin number: CN 102090926B, employing a combination of multiple wavelengths, cuts were made at a wavelength of 2um and hemostasis was performed at a wavelength of 1470 nm. The technology is complex, the implementation difficulty is high, the system volume is large, the maintenance is difficult, and the popularization of the new technology is not facilitated.
The green laser is used for soft tissue gasification cutting to obtain a large number of practices in clinic, and is fully proved to be safe and effective, compared with the prior generation 'gold standard', 'transurethral prostatectomy' TURP, the green laser has almost no side effect and is expected to become a new generation 'gold standard' for replacing the TURP. Unlike other wavelength light, green laser is absorbed by hemoglobin in human body, and can be transmitted in long distance in human body water environment to gasify tissue into powder directly to be washed out by water without crushing large tissue. These unique advantages have led to the fact that this wavelength of the green laser must be the optimal choice for soft tissue disease treatment. However, the two-wavelength output becomes a better choice for popularization of green laser surgery because no cutting effect can not take pathology and bleeding of large blood vessels and venous sinuses is difficult to stop.
Patent No. US 20180078310A1 describes a combination of a 532nm green laser at 20W with a 980nm near infrared laser at 40W. The power of the two wavelengths of the combination is lower, and the two lasers are transmitted into the optical fiber for treatment operation in an optical fiber beam combining mode, so that the system is complex, the stability is poor, and the maintenance is difficult.
Therefore, there is a need for a dual wavelength laser therapeutic apparatus with a simple structure and high stability, which can switch between outputting high power green laser light of 532nm and near infrared laser light of 1064 nm. 532nm laser is used for soft tissue gasification excision, 1064nm laser is used for soft tissue cutting, hemostasis of great vessels and venous sinus to meet operation requirements, and becomes a better solution for soft tissue operation.
Disclosure of Invention
The application aims to provide a dual-wavelength laser and a laser therapeutic instrument.
In order to solve the technical problems, the application provides a dual-wavelength laser, which comprises a pumping system, a first half-reflecting mirror, a movable reflecting mirror, a frequency doubling crystal, a total reflection cavity mirror, an infrared output mirror, a first reflecting mirror, a second half-reflecting mirror and an optical fiber coupling device, wherein the movable reflecting mirror is provided with a first position and a second position, when the movable reflecting mirror is positioned at the first position, a first wavelength light beam generated by the pumping system sequentially passes through the reflection of the first half-reflecting mirror and the movable reflecting mirror, then passes through the infrared output mirror, sequentially passes through the reflection of the first reflecting mirror and the second half-reflecting mirror and then reaches the optical fiber coupling device; when the movable reflecting mirror is positioned at the second position, the first wavelength light beam generated by the pumping system passes through the frequency doubling crystal after being reflected by the first half-reflecting mirror, is reflected by the total reflection cavity mirror to form a second wavelength light beam, passes through the first half-reflecting mirror, is reflected by the second reflecting mirror, passes through the second half-reflecting mirror, reaches the optical fiber coupling device, and can reflect the first wavelength light beam and transmit the second wavelength light beam.
Preferably, the first wavelength beam is an infrared laser with a wavelength of 1064nm, and the second wavelength beam is a visible laser with a wavelength of 532 nm.
Preferably, the pumping system comprises a pumping chamber, a Q-switch and a back mirror.
Preferably, the movable mirror is a slidable device mounted on a slider and capable of sliding between a first position and a second position.
The application also provides a laser therapeutic apparatus comprising the laser according to any one of claims 1 to 4, and further comprising a power supply control system for supplying power to the laser.
Preferably, the laser therapeutic apparatus further comprises a laser cooling system for cooling the pumping chamber and the Q-switch.
Preferably, the laser cooling system is a water flow cooling system and comprises a water flow protection switch, wherein the water flow protection switch is used for giving a signal to feed back to a power supply control system when water flow disconnection occurs under the working state of the laser, and the power supply control system is used for cutting off the power supply of the laser according to the signal fed back by the water flow protection switch.
Preferably, the laser therapeutic apparatus further comprises a multimode energy-transmitting optical fiber, the coupling lens in the optical fiber coupling device couples laser energy into the multimode energy-transmitting optical fiber, the laser further comprises a temperature sensor for monitoring the temperature of the optical fiber coupling device, the temperature sensor is used for sending a feedback signal to a power supply control system when the temperature of the optical fiber coupling device exceeds a set value, and the power supply control system cuts off power supply of the laser according to a deaf signal sent by the temperature sensor.
Preferably, the laser therapeutic apparatus further comprises a power detection device for detecting real-time power of the laser, and the power supply control system is further used for giving an alarm when the power detected by the power detection device is lower than or higher than 20% of a specified value.
Preferably, the laser therapeutic apparatus further comprises a foot switch for switching the output wavelength of the laser, the foot switch comprises a left foot control switch and a right foot control switch for respectively controlling the output of the first wavelength light beam and the second wavelength light beam, the foot switch is in signal connection with the power supply control system, and the power supply control system is used for controlling the movable reflecting lens to move at the first position or the second position according to the output signal of the foot switch.
The dual-wavelength laser and the laser therapeutic instrument have simple structure and high stability, and can switch and output green laser with high power of 532nm and near infrared laser with 1064nm through the movement of the movable reflecting lens at the first position and the second position. 532nm laser is used for soft tissue gasification excision, 1064nm laser is used for soft tissue cutting, hemostasis of great vessels and venous sinus to meet operation requirements, and becomes a better solution for soft tissue operation. The 532nm laser resonant cavity and the 1064nm laser resonant cavity share one pump, a Q switch and a rear cavity mirror, and one laser is changed into two lasers through one movable reflection lens, so that 532nm visible laser and 1064nm infrared laser can be respectively switched and output.
Drawings
FIG. 1 is a schematic diagram of a dual wavelength laser therapeutic apparatus according to the present invention;
FIG. 2 is a schematic diagram of the green laser output of the laser according to the present invention;
FIG. 3 is a schematic diagram of the infrared laser output of the laser according to the present invention;
FIG. 4 is a schematic diagram of the structure of the energy-transmitting fiber according to the present invention;
Figure 5 is a schematic view of the structure of the side-emitting light of the energy-transmitting optical fiber according to the present invention,
Wherein: 1. a laser; 2. multimode energy-transmitting optical fiber; 3. a power supply control system; 4. a laser cooling system; 5. a foot switch; 6. a power detection device; 7. a display device; 8. a rear mirror; 9. a Q-switch; 10. a pumping chamber; 11. a first half mirror; 12. a movable reflective lens; 13. a second mirror; 14. a frequency doubling crystal; 15. a total reflection cavity mirror; 16. an infrared output mirror; 17. a second half mirror; 18. a first mirror; 19. an optical fiber coupling device; 20. and coupling the lens.
Detailed Description
The present application will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the application and practice it.
As shown in fig. 2 and 3, the dual wavelength laser 1 according to the present application includes a pumping system, a first half mirror 11, a movable mirror 12, a frequency doubling crystal 14, a total reflection cavity mirror 15, an infrared output mirror 16, a first mirror 18, a second mirror 13, a second half mirror 17, and an optical fiber coupling device 19, where the movable mirror 12 has a first position and a second position.
As shown in fig. 3, when the movable mirror 12 is in the first position, the first wavelength beam generated by the pumping system sequentially passes through the first half mirror 11 and the movable mirror 12, then passes through the infrared output mirror 16, and sequentially passes through the first mirror 18 and the second half mirror 17, then reaches the optical fiber coupling device 19.
As shown in fig. 2, when the movable mirror 12 is in the second position, the first wavelength beam generated by the pumping system passes through the frequency doubling crystal 14 after being reflected by the first half mirror 11, is reflected by the total reflection cavity mirror 15 to form a second wavelength beam, and the second wavelength beam passes through the first half mirror 11, is reflected by the second mirror 13, passes through the second half mirror 17, and reaches the optical fiber coupling device 19.
The first half-reflecting mirror 11 and the second half-reflecting mirror 17 are plated with a 45-degree 1064nm high-reflecting film and a 532nm antireflection film, and can reflect light beams with first wavelength and transmit light beams with second wavelength. The first wavelength light beam is infrared laser with the wavelength of 1064nm, and the second wavelength light beam is visible laser with the wavelength of 532 nm. The pumping system comprises a pumping chamber 10, a Q-switch 9 and a back mirror 8. The movable mirror plate 12 is a slidable device mounted on a slide block and capable of sliding between a first position and a second position. The L-type 532nm laser resonant cavity and the Z-type 1064nm laser resonant cavity form a common pumping cavity 10, a Q switch 9 and a rear cavity mirror, and one laser 1 is changed into two lasers 1 through one movable reflection lens 12, so that 532nm visible laser and 1064nm infrared laser can be respectively switched and output. The first mirror 18 and the second mirror 13 are 45-degree mirrors.
The frequency doubling crystal 14 is an LBO crystal or a KTP crystal, the frequency doubling efficiency is controlled in a temperature matching mode, and the temperature control precision is +/-0.1 ℃. The pumping chamber 10 is side pumped, either continuously semiconductor pumped or lamp pumped. The laser medium can be Nd: YAG, also Nd: YLF or Nd: YVO4. The diameter of the crystal rod is from 2mm to 10mm, the doping concentration is from 0.5% -1.2%, and in order to improve the beam quality, the crystal can be made into two end-face biconcave 1mCC or directly use a bonding crystal, wherein the doping length depends on the distribution length of the pumping light.
In the debugging method of the optical fiber coupling device 19 shared by the two paths of laser, under the 532nm green laser output mode, the second reflecting mirror 13 is firstly adjusted to adjust 532nm laser to the central position of the optical fiber coupling device 19, and then the coupling lens 20 of the optical fiber coupling device 19 is finely adjusted to input 532nm laser from the center of the optical fiber; after the adjustment, the second reflecting mirror 13 and the coupling lens 20 are fixedly locked, the output mode is switched to 1064nm, the first reflecting mirror 18 is adjusted, the laser of 1064nm is adjusted to enter the center of the optical fiber coupler, the second reflecting mirror 13 is finely adjusted, and the optimal laser energy output of 1064nm is obtained through the optical fiber.
As shown in fig. 1, the laser therapeutic apparatus of the present application comprises a laser 1, a power supply control system 3 for supplying power to the laser 1, a laser cooling system 4 for cooling a pumping cavity 10 and a Q-switch 9, a multimode energy-transmitting optical fiber 2, a power detection device 6, a foot switch 5, and a display device 7.
The laser cooling system 4 is a water flow cooling system and comprises a water flow protection switch, wherein the water flow protection switch is used for giving a signal to feed back to the power supply control system 3 when water flow is broken under the working state of the laser 1.
The power supply control system 3 is used for cutting off the power supply of the laser 1 according to the signal fed back by the water flow protection switch. All output power sources are direct current power supplies, including ultrasonic driving of the Q switch 9, direct current power supply of the pumping cavity 10, temperature control of LBO crystals, control of moving lenses and the like. The power supply and control system (3) also comprises signal processing and alarming for each sensor, such as waterway detection signals, current and voltage real-time monitoring signals, light energy feedback signals, interlocking control signals, optical fiber sensor temperature signals and the like.
The coupling lens 20 in the optical fiber coupling device 19 couples laser energy into the multimode energy-transmitting optical fiber 2, the laser 1 further comprises a temperature sensor for monitoring the temperature of the optical fiber coupling device 19, the temperature sensor is used for sending a feedback signal to the power supply control system 3 when the temperature of the optical fiber coupling device 19 exceeds a set value, and the power supply control system 3 cuts off the power supply of the laser 1 according to a deaf signal sent by the temperature sensor. The multimode energy-transmitting optical fiber 2 is composed of a step-index multimode quartz energy-transmitting optical fiber, the core diameter of which is 62.5-1200um, and the cladding diameter of which is 125-1250um. In the operation process, laser energy is transmitted to a lesion part of a human body through an optical fiber to treat, wherein the lesion is mainly a soft tissue disease.
The power supply control system 3 is also used for giving an alarm when the power detected by the power detection device 6 is lower than or higher than 20% of a specified value. The foot switch 5 comprises a left foot control switch and a right foot control switch which respectively control the output of the first wavelength light beam and the second wavelength light beam, the foot switch 5 is in signal connection with the power supply control system 3, and the power supply control system 3 is used for controlling the movable reflection lens 12 to move at the first position or the second position according to the output signal of the foot switch 5.
As shown in fig. 4 and 5, the output end of the multimode energy-transfer optical fiber 2 may directly output along the optical fiber axis or may output laterally at an angle with respect to the optical fiber axis. When the optical fiber is directly output, the output end face of the optical fiber forms an included angle of 90 degrees with the axis. When the optical fiber outputs laterally, the output end face of the optical fiber forms an included angle of 45 degrees with the axis.
In one embodiment, the output wavelength of the laser 1 is 532nm and 1064nm, the frequency is 10-15 KHz and CW mode, the pulse width is 100 ns-200 ns, and the maximum average power is 200W and 120W, respectively, for the treatment and hemostasis of human soft tissue diseases.
The application method of the laser therapeutic apparatus provided by the application comprises the following steps:
In the operation process of doctors, one foot switch 5 is stepped on, the therapeutic apparatus outputs laser with one wavelength, the other foot switch 5 is stepped on, signals enter the control system, and the control system sends out control signals to move the movable reflecting lens 12 and switch to laser output with the other wavelength. The two lasers are respectively output, and the two foot switches 5 can not be simultaneously stepped down to simultaneously output the lasers with two wavelengths. The two exposed control switches are covered by the cover to prevent misoperation. The display device 7 is a touchable display. After the therapeutic apparatus is started, the operator adjusts the power to the required power according to the operation requirement by adjusting a control button on the display device 7 to perform the operation. The display device 7 displays the operation time length and the accumulated output laser energy at the same time, so that the operation analysis of doctors is convenient. When the system alarms, the display device 7 displays the details of alarm information, so that after-sale feedback maintenance is facilitated. In the operation process, laser energy is transmitted to a lesion part of a human body through an optical fiber to treat, wherein the lesion is mainly a soft tissue disease. The output end of the multimode energy-transfer optical fiber 2 can output forwards along the optical fiber axis or laterally at a certain included angle with the optical fiber axis. The doctor selects the output mode according to the requirements of the actual operation condition.
The dual-wavelength laser 1 and the laser therapeutic apparatus have simple structure and high stability, and can switch and output high-power 532nm green laser and 1064nm near-infrared laser by moving the movable reflection lens 12 at the first position and the second position. 532nm laser is used for soft tissue gasification excision, 1064nm laser is used for soft tissue cutting, hemostasis of great vessels and venous sinus to meet operation requirements, and becomes a better solution for soft tissue operation. The 532nm laser resonant cavity and the 1064nm laser resonant cavity share one pump, the Q switch 9 and the rear cavity mirror, and one laser 1 is changed into two lasers 1 through one movable reflection lens 12, so that 532nm visible laser and 1064nm infrared laser can be respectively switched and output.
The above-described embodiments are merely preferred embodiments for fully explaining the present application, and the scope of the present application is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present application, and are intended to be within the scope of the present application. The protection scope of the application is subject to the claims.

Claims (8)

1. A dual-wavelength laser is characterized by comprising a pumping system, a first semi-transparent semi-reflecting mirror, a movable reflecting mirror, a frequency doubling crystal, a total reflection cavity mirror, an infrared output mirror, a first reflecting mirror, a second semi-transparent semi-reflecting mirror and an optical fiber coupling device, wherein the pumping system comprises a pumping cavity, a Q switch and a back reflecting mirror,
The movable reflection lens has a first position and a second position, the movable reflection lens is a slidable device which is arranged on a sliding block and can slide between the first position and the second position,
When the movable reflecting mirror is positioned at the first position, the first wavelength light beam generated by the pumping system sequentially passes through the first semi-transparent and semi-transparent reflecting mirror and the movable reflecting mirror, passes through the infrared output mirror, sequentially passes through the first reflecting mirror and the second semi-transparent and semi-transparent reflecting mirror, and then reaches the optical fiber coupling device;
When the movable reflecting mirror is positioned at the second position, the first wavelength beam generated by the pumping system passes through the frequency doubling crystal after being reflected by the first half-reflecting mirror and is reflected by the total reflection cavity mirror to form a second wavelength beam, the second wavelength beam passes through the first half-reflecting mirror, is reflected by the second reflecting mirror, passes through the second half-reflecting mirror and reaches the optical fiber coupling device,
The first half-mirror and the second half-mirror can reflect the first wavelength light beam and transmit the second wavelength light beam.
2. The laser of claim 1, wherein the first wavelength beam is an infrared laser having a wavelength of 1064nm and the second wavelength beam is a visible laser having a wavelength of 532 nm.
3. A laser therapeutic apparatus comprising the laser of claim 1 or 2, said laser therapeutic apparatus further comprising a power control system for powering the laser.
4. The laser therapeutic apparatus of claim 3, further comprising a laser cooling system for cooling the pumping chamber and the Q-switch.
5. The laser therapeutic apparatus of claim 4, wherein the laser cooling system is a water flow cooling system comprising a water flow protection switch, the water flow protection switch is used for giving a signal to be fed back to a power supply control system when water flow disconnection occurs in the working state of the laser, and the power supply control system is used for cutting off power supply of the laser according to the signal fed back by the water flow protection switch.
6. The laser therapeutic apparatus of claim 4, further comprising a multimode energy-transmitting optical fiber, wherein the coupling lens of the optical fiber coupling device couples laser energy into the multimode energy-transmitting optical fiber, and wherein the laser further comprises a temperature sensor for monitoring the temperature of the optical fiber coupling device, wherein the temperature sensor is configured to send a feedback signal to a power supply control system when the temperature of the optical fiber coupling device exceeds a set value, and wherein the power supply control system cuts off power to the laser according to a deaf signal sent by the temperature sensor.
7. The laser therapeutic apparatus of claim 4, wherein said laser therapeutic apparatus further comprises power detection means for detecting real-time power of the laser, and said power supply control system is further configured to issue an alarm when the power detected by said power detection means is lower than or higher than 20% of a prescribed value.
8. The laser therapeutic apparatus of claim 4, further comprising a foot switch for switching the output wavelength of the laser, wherein the foot switch comprises a left foot control switch and a right foot control switch for controlling the output of the first wavelength beam and the second wavelength beam, respectively, the foot switch is in signal connection with the power supply control system, and the power supply control system is used for controlling the movable reflecting lens to move at the first position or the second position according to the output signal of the foot switch.
CN201810715657.4A 2018-07-03 2018-07-03 Dual wavelength laser and laser therapeutic instrument Active CN109044526B (en)

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