CN109494562A - A kind of double frequency dipulse endovenous laser stone crusher - Google Patents
A kind of double frequency dipulse endovenous laser stone crusher Download PDFInfo
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- CN109494562A CN109494562A CN201811477635.5A CN201811477635A CN109494562A CN 109494562 A CN109494562 A CN 109494562A CN 201811477635 A CN201811477635 A CN 201811477635A CN 109494562 A CN109494562 A CN 109494562A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/106—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity
- H01S3/108—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity using non-linear optical devices, e.g. exhibiting Brillouin or Raman scattering
- H01S3/109—Frequency multiplication, e.g. harmonic generation
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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
- A61B18/26—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 for producing a shock wave, e.g. laser lithotripsy
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/10007—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers
- H01S3/10015—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers by monitoring or controlling, e.g. attenuating, the input signal
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/102—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
- H01S3/1022—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation by controlling the optical pumping
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/105—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the mutual position or the reflecting properties of the reflectors of the cavity, e.g. by controlling the cavity length
Abstract
The present invention relates to a kind of double frequency dipulse endovenous laser stone crushers, including laser resonator and output module；The laser resonator includes laser generation module, condenser lens, adjusting Q crystal, the first frequency-doubling crystal and outgoing mirror；Laser generation module is for generating 1064nm laser；Adjusting Q crystal is used to carry out adjusting Q processing to laser, is allowed to become pulse laser；First frequency-doubling crystal is used to the carry out part frequency multiplication of pulse laser realizing the output of 1064/532nm double-frequency pulse laser；Outgoing mirror is for exporting double-frequency pulse laser to output module；Output module is used to for double-frequency pulse laser to be transported to progress rubble at calculi in vivo.The present invention first excites plasma in calculus surfaces using 532nm laser, the subsequent heating plasma of 1064nm laser generates mechanical shock wave and smashes calculus, while smashing calculus, tissue does not generate absorption to 1064/532nm laser, thermal damage will not be generated to tissue, accomplish only broken calculus, not injured tissue, improves the safety of endovenous laser lithotrity.
Description
Technical field
The present invention relates to laser technology fields, and in particular to a kind of double frequency dipulse endovenous laser stone crusher.
Background technique
With the continuous development of laser technology and endoscopic technique, endovenous laser lithotrity, which has become most, to be had prospect, answers
With one of most commonly used digestion, biliary tract and urinary system lithotripsy in treatment method.Most commonly used Ho.YAG laser lithotripsy machine hair at present
Pulse type laser is penetrated, the Bladder stone wavelength of generation is 2140nm, and energy is conducted by soft fiber, makes optical fiber connector and calculus surfaces
Water gasified, form micro-bubble, after bubbles burst, energy reached into calculus, calculus is made to gasify and rupture.Ho.YAG laser lithotripsy
Although machine has the advantages that calculifragous efficiency is high, its Bladder stone pulse tissue penetration depths emitted is about 0.5mm, right
Surrounding tissue has thermal damage's effect, and the ability with soft tissue vaporization cutting can cause ureter, renal plevis mucosa injury, perforation
With it is narrow, be easy to cause serious complication, at present clinically it has been reported that Bladder stone causes renal function of patients damage, urine output
The case of pipe perforation and postoperative infection.Therefore, the safety of lasertripsy also needs to further increase.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of double frequency dipulse endovenous laser stone crusher, including laser is humorous
Shake chamber and output module；The laser resonator include laser generation module, condenser lens, adjusting Q crystal, the first frequency-doubling crystal and
Outgoing mirror；
The laser generation module is transmitted for generating 1064nm laser, and by 1064nm laser by the first convergent lens
To adjusting Q crystal；
The adjusting Q crystal is used to that the 1064nm laser received to be carried out to adjusting Q processing, and 1064nm laser is made to become 1064nm
Pulse laser, and the 1064nm pulse laser is transferred to the first frequency-doubling crystal；
The carry out frequency multiplication for a part of pulse laser that first frequency-doubling crystal is used to export adjusting Q crystal, thus by one
Partial pulse laser is converted into 532nm pulse laser, and by the 1064nm pulse of 532nm pulse laser and non-frequency multiplication after frequency multiplication
Laser is exported to outgoing mirror, realizes the output of 1064/532nm double-frequency pulse laser；
The outgoing mirror is for exporting 1064/532nm double-frequency pulse laser to output module；
The output module is used to for received 1064/532nm double-frequency pulse laser to be transported to progress at calculi in vivo broken
Stone.
Further, the laser generation module include pumping source, laser crystal, the first reflective mirror, the first collimation lens,
Optical fiber and reflecting module；
The pumping source is for generating laser；
The laser crystal be used for by the laser that pumping source generates be converted into 1064nm laser and by 1064nm laser successively
By being conveyed to optical fiber after the first reflective mirror and the first collimation lens, then reflecting module is conveyed to by optical fiber；
The laser that the reflecting module is used to receive is reflected back along former road, to form laser generation.
Further, the core diameter of the optical fiber 3 be 200um, length 20m.
Further, the initial transmission of the adjusting Q crystal is 30%, and the pump energy of the pumping source is 70J.
Further, the pumping source includes flash lamp and power supply, and the flash lamp is used for generating light source, the power supply
In the size for the energy of light source that flash lamp output is powered and controlled for flash lamp.
Further, the reflecting module includes total reflective mirror and the second convergent lens, and the reflective surface of the total reflective mirror is coated with
The high-reflecting film of 1064nm wave band, 1064nm laser is conveyed to total reflective mirror by the second convergent lens by the optical fiber, described to be all-trans
1064nm laser is reflected back optical fiber by the second convergent lens again after receiving 1064nm laser by mirror.
Further, the output module includes the second reflective mirror, third concentrating lens and output optical fibre, the outgoing mirror
The 1064/532nm double-frequency pulse laser of output passes sequentially through the second reflective mirror and third concentrating lens are exported to output optical fibre, institute
It states output optical fibre and received 1064/532nm double-frequency pulse laser is transported to progress rubble at calculi in vivo.
Further, the laser lithotripsy machine further includes the outer secondary frequency multiplication module of chamber, the outer secondary frequency multiplication module packet of the chamber
It includes the 4th convergent lens, the second frequency-doubling crystal and the second collimation and throws mirror, the outgoing mirror passes through the 4th convergent lens for 1064/
532nm double-frequency pulse laser is exported to the second frequency-doubling crystal, and second frequency-doubling crystal passes through the second collimation lens for 1064/
532nm double-frequency pulse laser is exported to output module, and second frequency-doubling crystal is used for 1064/532nm double-frequency pulse laser
In 1064nm pulse laser a part carry out frequency multiplication.
Further, the laser lithotripsy machine further includes beam splitter and laser energy monitoring modular, throws mirror from the second collimation
The 1064/532nm double-frequency pulse laser of output is divided into two-way after passing through beam splitter, and the first via is output to by the second reflective mirror
Output module；Second tunnel is output to laser energy monitoring modular, and the laser energy monitoring modular swashs for real-time monitoring output
Whether light is normal.
Further, the laser lithotripsy machine further includes instruction light source, and the instruction light source is set to the second reflective mirror
By in smooth surface.
Beneficial effects of the present invention:
(1) laser lithotripsy machine emits 1064/532nm double-frequency laser, and 532nm laser first excites plasma in calculus surfaces
Body, the subsequent heating plasma of 1064nm laser generates mechanical shock wave and smashes calculus, while smashing calculus, tissue
Absorption is not generated to 1064/532nm laser, thermal damage will not be generated to tissue, accomplish only broken calculus, not injured tissue, mention
The high safety of endovenous laser lithotrity.
(2) by long come the chamber of extended cavity in the intracavitary addition optical fiber of laser resonance, so that pulsewidth needed for obtaining swashs
Light pulse does not increase the volume of entire resonant cavity since optical fiber has characteristic that is superfine and can coiling substantially after addition optical fiber, and
And without increasing additional control section, guarantee the stability of laser lithotripsy machine operation.
(3) by the initial transmission of the optimization intracavitary adjusting Q crystal of laser resonance and the pump energy of flash lamp, so that laser
Stone crusher exports two pulses within pumping cycle of flash lamp, so that calculifragous efficiency doubles, and need to only adjust sudden strain of a muscle and turn off the light
Pump energy, so that it may realize single and double-pulse output switching.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of double frequency dipulse endovenous laser stone crusher provided in an embodiment of the present invention；
Fig. 2 is 1064nm pulsed laser output waveform diagram provided in an embodiment of the present invention；
Fig. 3 is 532nm pulsed laser output waveform diagram provided in an embodiment of the present invention；
Fig. 4 is the double frequency pulse-pair output waveform diagram provided for inventive embodiments
Description of symbols: 1, total reflective mirror, the 2, second condenser lens, 3, optical fiber, the 4, first collimation lens, 5, first is reflective
Mirror, 6, laser crystal, the 7, first convergent lens, 8, adjusting Q crystal, the 9, first frequency-doubling crystal, 10, outgoing mirror, the 11, the 4th aggregation are saturating
Mirror, the 12, second frequency-doubling crystal, the 13, second collimation lens, 14, beam splitter, the 15, second reflecting mirror, 16, third concentrating lens,
17, output optical fibre, 18, energy monitoring module, 19, instruction light source, 20, flash lamp, 21, power supply.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only present invention a part, instead of all the embodiments.Based on the present invention
In embodiment, all other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
As shown in Figure 1, a kind of double frequency dipulse endovenous laser stone crusher provided in an embodiment of the present invention, including laser resonance
Chamber and output module；The laser resonator includes laser generation module, the first condenser lens 7, adjusting Q crystal 8, the first frequency multiplication crystalline substance
Body 9 and outgoing mirror 10；
The laser generation module is passed for generating 1064nm laser, and by 1064nm laser by the first convergent lens 7
It is defeated by adjusting Q crystal 8；
The adjusting Q crystal 8 is used to that the 1064nm laser received to be carried out to adjusting Q processing, becomes 1064nm laser
1064nm pulse laser, and the 1064nm pulse laser is transferred to the first frequency-doubling crystal 9；
The carry out frequency multiplication for a part of pulse laser that first frequency-doubling crystal 9 is used to export adjusting Q crystal 8, thus will
A part of pulse laser is converted into 532nm pulse laser, and by the 1064nm arteries and veins of 532nm pulse laser and non-frequency multiplication after frequency multiplication
Impulse light output realizes the output of 1064/532nm double-frequency pulse laser to outgoing mirror 10；
The outgoing mirror 10 is for exporting 1064/532nm double-frequency pulse laser to output module；
The output module is used to for received 1064/532nm double-frequency pulse laser to be transported to progress at calculi in vivo broken
Stone.
Wherein, laser crystal 6 may be selected neodymium-doped yttrium-aluminum garnet crystal (Nd:YAG) or Nd-doped yttrium vanadate crystal (Nd:
YVO4)；It is brilliant that KTP crystal (KTP), barium borate crystal (BBO) or three lithium borates can be selected in first frequency-doubling crystal 9
Body (LBO) frequency-doubling crystal；Outgoing mirror 10 penetrates 1064nm laser part, all penetrates to 532nm laser, constitutes laser resonance
The output end of chamber.
In above-described embodiment, the first frequency-doubling crystal 9 is placed in resonant cavity and is converted to a part of 1064nm pulse laser
532nm pulse laser, realizes the output of 1064/532nm double-frequency pulse laser, and 532nm laser first excites plasma in calculus surfaces
Body, the subsequent heating plasma of 1064nm laser generates mechanical shock wave and smashes calculus, while smashing calculus, tissue
Absorption is not generated to 1064/532nm laser, thermal damage will not be generated to tissue, accomplish only broken calculus, not injured tissue, mention
The high safety of endovenous laser lithotrity.
Preferably, the laser generation module includes pumping source, laser crystal 6, the first reflective mirror 5, the first collimation lens
4, optical fiber 3 and reflecting module；
The pumping source is for generating light source；
The laser crystal 6 be used for by the light source that pumping source generates be converted into 1064nm laser and by 1064nm laser successively
Reflecting module is conveyed to by being conveyed to optical fiber 3 after the first reflective mirror 5 and the first collimation lens 4, then by optical fiber 3；
The laser that the reflecting module is used to receive is reflected back along former road, to form laser generation.
Wherein, the pumping source includes flash lamp 20 and power supply 21, and the flash lamp 20 is for generating light source, the power supply
The size of 21 energy of light source for the output of flash lamp 20 to be powered and controlled for flash lamp 20；The reflecting module includes total reflective mirror
1 and second convergent lens 2, the reflective surface of the total reflective mirror 1 is coated with the high-reflecting film of 1064nm wave band, and the optical fiber 3 is by 1064nm
Laser is conveyed to total reflective mirror by the second convergent lens 2, and the total reflective mirror 1 receives after 1064nm laser again by 1064nm laser
Optical fiber 3 is reflected back by the second convergent lens 2；
According to Q principle is adjusted, the pulsewidth of adjustable Q laser pulse is directly proportional to chamber length, and the length by adjusting optical fiber 3 can be direct
The pulsewidth of output laser pulse is controlled, simultaneously because optical fiber 3 has the elongated characteristic coiled, optical fiber 3 is added and does not increase substantially
The volume of entire resonant cavity, will obtain the laser pulse of pulsewidth about 1us, and the core diameter of selected optical fiber 3 is 200um, length 20m.
Further to promote the calculifragous efficiency to harder calculus, laser lithotripsy machine can work in pulse-pair output mode,
The initial transmission for selecting adjusting Q crystal 8 is 30%, and adjusting the pump energy of flash lamp 20 by power supply 21 is 70J, keeps laser broken
Stone machine exports two laser pulses within a pumping cycle of flash lamp 2010, obtains double frequency pulse-pair output, so that
Calculifragous efficiency doubles, and double frequency pulse-pair output waveform is as shown in figure 4, the interval between two pulses is about 80us, when calculus is hard
When spending smaller, the pump energy of flash lamp 20 can be reduced, laser lithotripsy machine is made to be in double frequency pulse output state.
Preferably, the output module includes the second reflective mirror, third concentrating lens 16 and output optical fibre 17, described
Outgoing mirror 10 export 1064/532nm double-frequency pulse laser pass sequentially through the second reflective mirror and third concentrating lens 16 output to
Output optical fibre 17, the output optical fibre 17 by received 1064/532nm double-frequency pulse laser be transported at calculi in vivo carry out it is broken
Stone.
Preferably, the laser lithotripsy machine further includes the outer secondary frequency multiplication module of chamber, and the outer secondary frequency multiplication module of the chamber includes
4th convergent lens 11, the second frequency-doubling crystal 12 and the second collimation throw mirror, and the outgoing mirror 10 will by the 4th convergent lens 11
1064/532nm double-frequency pulse laser is exported to the second frequency-doubling crystal 12, and second frequency-doubling crystal 12 passes through the second collimation lens
13 export 1064/532nm double-frequency pulse laser to output module, and second frequency-doubling crystal 12 is used for bis- to 1064/532nm
A part of 1064nm pulse laser in frequency pulse laser carries out frequency multiplication.
In above-described embodiment, the outer secondary frequency multiplication of chamber is carried out, 532nm laser energy in output laser is further improved, adds
The speed formation of rubble process plasma, improves calculifragous efficiency.
Wherein, second frequency-doubling crystal 12 equally optional KTP crystal (KTP), barium borate crystal (BBO)
Or lithium triborate crystal (LBO) frequency-doubling crystal.
Preferably, the laser lithotripsy machine further includes beam splitter 14 and laser energy monitoring modular 18, the output module
Further include the second reflective mirror, throws after the 1064/532nm double-frequency pulse laser that mirror exports passes through beam splitter 14 and divided from the second collimation
At two-way, the first via is output to output module by the second reflective mirror；Second tunnel is output to laser energy monitoring modular 18, in real time
Whether monitoring output laser is normal.
Preferably, the laser lithotripsy machine further includes instruction light source 19, and the instruction light source 19 is set to the second reflective mirror
By in smooth surface.
In above-described embodiment, collimated first by second by the 1064/532nm double-frequency pulse laser of secondary frequency multiplication outside chamber saturating
Mirror 13 collimates, and is reflected by overwhelming majority laser when beam splitter 14, small part laser light beam splitter 14 is incident on laser energy
Detection module is measured, whether the output energy of 18 real-time monitoring laser lithotripsy machine of laser energy monitoring modular is maintained at normal level,
The laser that beam splitter 14 reflects passes through the second reflecting mirror 15 and tertiary focusing lens focus into output optical fibre 17, output optical fibre
Laser energy is transported to progress rubble at calculus by 17；Instruction light source 19 is placed after second reflecting mirror 15, is used to indicate internal light
The position that fibre 3 is directed toward.The 1064nm laser pulse shape that output optical fibre 17 exports is as shown in Fig. 2, pulsewidth is about 1.19us, output
532nm laser pulse shape as shown in figure 3, pulsewidth is about 800ns.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of double frequency dipulse endovenous laser stone crusher, which is characterized in that described to swash including laser resonator and output module
Optical cavity includes laser generation module, condenser lens, adjusting Q crystal, the first frequency-doubling crystal and outgoing mirror；
1064nm laser is transferred to tune by the first convergent lens for generating 1064nm laser by the laser generation module
Q crystal；
The adjusting Q crystal is used to that the 1064nm laser received to be carried out to adjusting Q processing, and 1064nm laser is made to become 1064nm pulse
Laser, and the 1064nm pulse laser is transferred to the first frequency-doubling crystal；
The carry out frequency multiplication for a part of pulse laser that first frequency-doubling crystal is used to export adjusting Q crystal, thus by a part of
Pulse laser is converted into 532nm pulse laser, and by the 1064nm pulse laser of 532nm pulse laser and non-frequency multiplication after frequency multiplication
It is transferred to output module by outgoing mirror, realizes the output of 1064/532nm double-frequency pulse laser；
The output module is used to for received 1064/532nm double-frequency pulse laser to be transported to progress rubble at calculi in vivo.
2. double frequency dipulse endovenous laser stone crusher according to claim 1, which is characterized in that the laser generation module
Including pumping source, laser crystal, the first reflective mirror, the first collimation lens, optical fiber and reflecting module；
The pumping source is for generating light source；
The laser crystal for the light source that pumping source generates is converted into 1064nm laser and pass sequentially through the first reflective mirror with
It is conveyed to optical fiber after first collimation lens, then reflecting module is conveyed to by optical fiber；
The laser that the reflecting module is used to receive is reflected back along former road, to form laser generation.
3. the double frequency dipulse endovenous laser stone crusher according to claim 2, which is characterized in that the light
Fibre 3 core diameter be 200um, length 20m.
4. the double frequency dipulse endovenous laser stone crusher according to claim 2, which is characterized in that the tune Q is brilliant
The initial transmission of body is 30%, and the pump energy of the pumping source is 70J.
5. double frequency dipulse endovenous laser stone crusher according to claim 2, which is characterized in that the pumping source includes dodging
Light lamp and power supply, the flash lamp are used to power and control for flash lamp flash lamp output for generating light source, the power supply
The size of energy of light source.
6. double frequency dipulse endovenous laser stone crusher according to claim 2, which is characterized in that the reflecting module includes
Total reflective mirror and the second convergent lens, the reflective surface of the total reflective mirror are coated with the high-reflecting film of 1064nm wave band, and the optical fiber will
1064nm laser is conveyed to total reflective mirror by the second convergent lens, and the total reflective mirror receives after 1064nm laser again by 1064nm
Laser is reflected back optical fiber by the second convergent lens.
7. double frequency dipulse endovenous laser stone crusher according to claim 1, which is characterized in that the output module includes
Second reflective mirror, third concentrating lens and output optical fibre, the 1064/532nm double-frequency pulse laser of the outgoing mirror output is successively
It is exported by the second reflective mirror and third concentrating lens to output optical fibre, the output optical fibre is by received 1064/532nm double frequency
Pulse laser is transported to progress rubble at calculi in vivo.
8. double frequency dipulse endovenous laser stone crusher according to claim 7, which is characterized in that the laser lithotripsy machine also wraps
The outer secondary frequency multiplication module of chamber is included, the outer secondary frequency multiplication module of the chamber includes that the 4th convergent lens, the second frequency-doubling crystal and second are quasi-
Mirror is delivered directly, the outgoing mirror is exported 1064/532nm double-frequency pulse laser to the second frequency-doubling crystal by the 4th convergent lens,
Second frequency-doubling crystal is exported 1064/532nm double-frequency pulse laser to output module by the second collimation lens, and described
Two frequency-doubling crystals are used to carry out frequency multiplication to a part of the 1064nm pulse laser in 1064/532nm double-frequency pulse laser.
9. double frequency dipulse endovenous laser stone crusher according to claim 8, which is characterized in that the laser lithotripsy machine is also
Including beam splitter and laser energy monitoring modular, the 1064/532nm double-frequency pulse laser of mirror output is thrown by dividing from the second collimation
Shu Jinghou is divided into two-way, and the first via is output to output module by the second reflective mirror；Second tunnel is output to laser energy monitoring
Whether module, the laser energy monitoring modular are normal for real-time monitoring output laser.
10. double frequency dipulse endovenous laser stone crusher according to claim 9, which is characterized in that the laser lithotripsy machine
Further include instruction light source, it is described instruction light source be set to the second reflective mirror by smooth surface.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111544111A (en) * | 2020-05-14 | 2020-08-18 | 山东大学第二医院 | Monitoring system for holmium laser stone crushing |
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| CN2904968Y (en) * | 2006-04-20 | 2007-05-30 | 武汉楚天激光（集团）股份有限公司 | Laser lithotripsy machine |
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