CN202637114U - 1320 nanometer and 660 nanometer laser dual-wavelength medical surgical device - Google Patents
1320 nanometer and 660 nanometer laser dual-wavelength medical surgical device Download PDFInfo
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- CN202637114U CN202637114U CN2012201840417U CN201220184041U CN202637114U CN 202637114 U CN202637114 U CN 202637114U CN 2012201840417 U CN2012201840417 U CN 2012201840417U CN 201220184041 U CN201220184041 U CN 201220184041U CN 202637114 U CN202637114 U CN 202637114U
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Abstract
The utility model discloses a 1320 nanometer (nm) and 660 nanometer (nm) laser dual-wavelength medical surgical device. The 1320 nm and 660 nm laser dual-wavelength medical surgical device is characterized by comprising a totally reflecting mirror, an acousto-optic controlling switch, a spotlight formed by a krypton pump lamp and a yttrium aluminum garnet (YAG) crystal, a resonant cavity body, a dichroic mirror, a frequency doubler, a coupling mirror, a lens and optical fiber. The totally reflecting mirror is plated with an dielectric membrane of high selectivity, and the membrane layer is highly reflected to a 1320 nm laser, low reflected to a 1064 nm laser, restrained to the oscillation of the 1064 nm laser, and achieves the oscillation of the 1320 nm laser, and outputs the 1320 nm laser. The 1320 nm laser becomes the 660 nm red laser after traveling through the frequency doubler, and the two wave band laser couple into the same optical fiber and are used for surgical treatment. The 1320 nm wave band oscillates with the 660 nm wave band, the second harmonics of the 1320 nm wave band, so as to achieve the output of the two wave bands. By the transmission of the optical fiber, light source can be effectively loaded into the treatment part. The 1320 nm wave band laser mechanism has the advantages of being good in absorbing effect, low in thermal damage, and capable of performing fine surgical treatment. The 660nm red laser, the second harmonics of the 1320 nm wave band, is an ideal novel light source for the treatment of an early-stage malignant tumor.
Description
Technical field
This utility model relates to a kind of 1320nm and 660nm laser dual wavelength medical operation device, belongs to the Laser Biomedicine technical field.
Background technology
Nineteen sixty in the world first ruby laser succeed in developing, next year ruby laser retina coagulating machine obtain first Application at ophthalmology.The seventies in last century, laser technology formation frontier branch of science---the laser medicine that combines with medical science, not only for studying the generation of life sciences and disease, new approach has been opened up in development, and for the clinical diagnosis and treatment disease provides brand-new means, also driven the develop rapidly of medical laser industry simultaneously.Laser technology develops into clinical medical key technology gradually, and has solved the many difficult problems in the medical science.Novel dual-wavelength Nd:YAG laser medical device (1320nm, 660nm) in present numerous laser instrument, be still solid state laser take Nd:YAG as host material what medical domain can play a role, have three luminescence spectrums under the Nd:YAG laser room temperature, wavelength is respectively 914nm, 1064nm and 1320nm, corresponding the intensity of spectral line and total fluorescence intensity are respectively 25%, 60% and 14%.At present using maximum wavelength is the 1064nm spectral line, and power level is 100W, all entered ripe clinical practice both at home and abroad, yet weak point is to organize cutting efficiency low, and photo-thermal conversion efficiency is low, solidifies, haemostatic effect is poor.
Summary of the invention
The purpose of this utility model is in order to overcome existing 1.06 μ m optical maser wavelength medical operation devices
Shortcoming, a kind of 1320nm and 660nm laser dual wavelength medical operation device are provided.
The technical solution of the utility model is, a kind of 1320nm and 660nm laser dual wavelength medical operation device, be characterized in light channel structure from left to right be connected with according to this total reflective mirror, acousto-optic Q-switching, by optically focused, resonant cavity, dichroic mirror, doubler, coupling mirror, lens and the optical fibers of krypton pumping lamp and YAG crystal composition; Described total reflective mirror is coated with the high selectivity deielectric-coating, rete is high anti-to 1320nm laser, low anti-to 1064nm laser, suppress the vibration of 1064nm light, realize 1320nm laser generation, output 1320nm laser, 1320nm laser is by after doubler two frequencys multiplication, 1320nm laser becomes the red laser of 660nm, and the red laser of 1320nm laser and 660nm is coupled into same optical fiber through coupling mirror, realizes laser dual wavelength Medical surgical treatment.
The acousto-optic Q-switching of described setting, laser obtain the fundamental frequency pulse of acousto-optic Q-switching modulation output high-peak power.
Described doubler is selected ktp crystal.
The beneficial effects of the utility model are: because 1320nm wave band Nd:YAG laser and its second harmonic 660nm vibration, to realize the output of two wavelength, and make it to reach high power and high stability output, by the transmission of optical fiber, can effectively light source be imported to therapentic part.The 1320nm wave band of laser is organized good absorbing effect, and the hot injury is few, can carry out the delicate procedure treatment, and its second harmonic 660nm red laser is to utilize laser power to treat the desirable up-to-date light source of early stage malignant tumor.Two ripples of this utility model collection are longer than one, have compact conformation, multiple functional, easy to use characteristics.
Description of drawings
Fig. 1 is 1320nm and 660nm laser dual wavelength medical operation device light channel structure sketch map.
The specific embodiment
This utility model is described further by reference to the accompanying drawings.
By shown in Figure 1, a kind of 1320nm and 660nm laser dual wavelength medical operation device are characterized in laser pump cavity 10, dichroic mirror 5, doubler 6, coupling mirror 7, lens 8 and optical fibers 9 that light channel structure from left to right is connected with according to this total reflective mirror 1, acousto-optic Q-switching 2, is comprised of krypton pumping lamp 3 and YAG crystal 4; Described total reflective mirror 1 is coated with the high selectivity deielectric-coating, rete is high anti-to 1320nm laser, low anti-to 1064nm laser, suppress the vibration of 1064nm laser, realize 1320nm laser generation, output 1320nm laser, 1320nm laser is by after doubler 6 two frequencys multiplication, 1320nm laser becomes the red laser of 660nm, and the red laser of 1320nm laser and 660nm is focused into same optical fibers 9 through coupling mirror 7 couplings through lens 8, realizes laser dual wavelength Medical surgical treatment.
Realize the method for 1320nm Laser output and determining of diaphragm parameters:
Realization 1320nm laser generation output must take measures to make 1320nm starting of oscillation threshold value to be lower than 1064nm, allows the 1320nm ripple vibrate at first in resonator cavity, and then by the population competition, inhibition 1064nm vibrates and forms.In this experimentation, we adopt cavity mirror plating high selectivity deielectric-coating, rete is high anti-to 1320nm, and is low anti-to 1064nm, simultaneously with other optical element plating of intracavity 1320nm anti-reflection film, reduce as far as possible the loss of 1320nm, by theoretical derivation and calculating, when total reflective mirror is lower than 10.8% to the reflectance of 1064nm, when 1320nm is higher than 95%, the starting of oscillation threshold value of 1320nm wavelength is lower than the 1064nm wavelength, and laser instrument will be realized the vibration output of 1320nm wavelength.Under the continuous operation condition, the transmitance T of the outgoing mirror of 1320nm Nd:YAG laser generally should be less than 10%.
Parameter designing and employing in the experiment:
The 1320nm wave band is implemented
Nd:YAG crystal: Φ 6 * 110nm (end face plating 1320nm anti-reflection film)
Pumping krypton lamp: Φ 9.5 * 100 4000W
Total reflective mirror: R1=99.5% 1.32 μ m
Coupling mirror: T=5% 1320nm
2. the key problem in technology of 660nm red spectral band
Ktp crystal is a kind of nonlinear crystal of excellent performance, is applicable to the Nd:YAG laser of low power density, moderate cost, thereby be first-selected doubler.
Owing to have than having higher laser power density outside the chamber in optically focused, the resonator cavity, intracavity frequency doubling can obtain higher harmonic power output, to adopt the continuous pump mode of krypton lamp, for improving the fundamental frequency power density, obtain high harmonic power output, in resonator cavity, insert Q-switch namely modulates to obtain high-peak power to fundamental frequency fundamental frequency pulse, improve shg efficiency, to adopt acousto-optic Q modulation in the implementation, ktp crystal two class phase matched, crystal length 6mm.
Use total reflective mirror, acousto-optic Q-switching does not close, and only slotting ktp crystal is adjusted resonator cavity, can realize faint HONGGUANG output, the first-harmonic of proof system output is 1320nm, after the modulation of adding acousto-optic Q-switching, HONGGUANG significantly strengthens, and add dichroic mirror this moment again, can realize the unidirectional output of HONGGUANG.
The performance of ktp crystal and acousto-optic Q-switching has a significant impact experimental result, and at first, the actual phase matching angle of KTP is empirical value, gets θ=60.8
o, θ=0
oSecondly, acousto-optic Q-switching adopts common quartz to add the mode of plating the 1320nm anti-reflection film, but quartz is deposited 1320nm
At a high absorption band, the fundamental frequency loss is large, and output is little.By recomputating the ktp crystal phase matching angle, select and have the low good silica glass material Herae μ s INFRASIL301 that infrared band is had 90% an above transmitance hydroxy and do the acousto-optic Q-switch, to reduce the first-harmonic loss and to make Pulse Compression more effective, proceed research, make a breakthrough at last, 660nm HONGGUANG power is reached 5W, to reach the requirement of optical dynamic therapy.
Claims (3)
1. a 1320nm and 660nm laser dual wavelength medical operation device, it is characterized in that the light channel structure of described 1320nm and 660nm laser dual wavelength medical operation device from left to right is connected with total reflective mirror, acousto-optic Q-switching according to this, by optically focused, resonant cavity, dichroic mirror, doubler, coupling mirror, lens and the optical fibers of krypton pumping lamp and YAG crystal composition; It is high anti-to 1320nm laser that described total reflective mirror is coated with rete, to the low anti-high selectivity deielectric-coating of 1064nm laser, suppress the vibration of 1064nm laser, realize 1320nm laser generation, output 1320nm laser, 1320nm laser is by after doubler two frequencys multiplication, and 1320nm laser becomes the red laser of 660nm, the red laser of 1320nm laser and 660nm is coupled into same optical fiber through coupling mirror, realizes 1320nm and 660nm laser dual wavelength Medical surgical treatment.
2. 1320nm according to claim 1 and 660nm laser dual wavelength medical operation device is characterized in that, described the fundamental frequency pulse that acousto-optic Q-switching, laser obtain Q modulation output high-peak power are set.
3. 1320nm according to claim 1 and 660nm laser dual wavelength medical operation device is characterized in that described doubler is selected ktp crystal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201840417U CN202637114U (en) | 2012-04-27 | 2012-04-27 | 1320 nanometer and 660 nanometer laser dual-wavelength medical surgical device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201840417U CN202637114U (en) | 2012-04-27 | 2012-04-27 | 1320 nanometer and 660 nanometer laser dual-wavelength medical surgical device |
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| CN202637114U true CN202637114U (en) | 2013-01-02 |
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| CN2012201840417U Expired - Fee Related CN202637114U (en) | 2012-04-27 | 2012-04-27 | 1320 nanometer and 660 nanometer laser dual-wavelength medical surgical device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102657556A (en) * | 2012-04-27 | 2012-09-12 | 上海市激光技术研究所 | Medical surgical instrument with double laser wavelengths of 1,320nm and 660nm |
| CN110123446A (en) * | 2019-05-27 | 2019-08-16 | 北京航空航天大学 | A method of based on laser thrombolysis in the blood vessel under endoscope guidance |
| CN117919021A (en) * | 2024-03-21 | 2024-04-26 | 天津迈达医学科技股份有限公司 | Optical path system for anterior ocular segment laser therapeutic apparatus and anterior ocular segment laser therapeutic apparatus |
-
2012
- 2012-04-27 CN CN2012201840417U patent/CN202637114U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102657556A (en) * | 2012-04-27 | 2012-09-12 | 上海市激光技术研究所 | Medical surgical instrument with double laser wavelengths of 1,320nm and 660nm |
| CN110123446A (en) * | 2019-05-27 | 2019-08-16 | 北京航空航天大学 | A method of based on laser thrombolysis in the blood vessel under endoscope guidance |
| CN117919021A (en) * | 2024-03-21 | 2024-04-26 | 天津迈达医学科技股份有限公司 | Optical path system for anterior ocular segment laser therapeutic apparatus and anterior ocular segment laser therapeutic apparatus |
| CN117919021B (en) * | 2024-03-21 | 2024-06-04 | 天津迈达医学科技股份有限公司 | Optical path system for anterior ocular segment laser therapeutic apparatus and anterior ocular segment laser therapeutic apparatus |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20150427 |
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| EXPY | Termination of patent right or utility model |