CN1704028A - Dual wavelength laser therapeutic machine - Google Patents
Dual wavelength laser therapeutic machine Download PDFInfo
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- CN1704028A CN1704028A CN 200410044326 CN200410044326A CN1704028A CN 1704028 A CN1704028 A CN 1704028A CN 200410044326 CN200410044326 CN 200410044326 CN 200410044326 A CN200410044326 A CN 200410044326A CN 1704028 A CN1704028 A CN 1704028A
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Abstract
The invention relates to a dual wavelength laser therapy apparatus in the field of laser medical apparatus which comprises Er:YAG crystal, pumping system, coupled lens, optical fiber and laser with the emission wavelength at 645-990nm. It has the following characters: it uses Er:YAG crystal redaction and the corresponding laser sets with the wavelength at 2940nm and 645-990nm to compound dual wavelength laser therapy apparatus; it couples the laser with the wavelength at 2940nm and 645-990nm into optical fiber so that the two lasers can be transmitted by one optical fiber.
Description
Technical field
The present invention relates to laser medical equipment.
Background technology
Recent years, Solid State Laser has very big progress in the application aspect medical.Early stage many Solid State Laser medical treatment machines all are with mixing Nd basically
3+: laser crystal is done working-laser material and is produced near-infrared wavelength laser, as: 1064nm, 1079nm, 1319nm, 1338nm, 1341nm etc.
As everyone knows, by using the cutting efficiency that can improve tissue near the near-infrared wavelength of water absworption peak in the biological tissue, reduce the hot injury.Recently, Er all mixes in research in many research institutions
3+: the application of the laser that laser crystal produces aspect medical.Because the Er:YAG laser crystal can produce the laser of 2940nm wavelength, this wavelength overlaps with water absworption peak in the biological tissue, and the laser medicine system is organizing aspect the cutting like this, and the Er:YAG laser therapy aparatus has very big advantage.Water to the absorptance of Er:YAG optical maser wavelength 2940nm greater than 3000cm
-1, bigger more than 200 times than the absorption of Ho:YAG optical maser wavelength 2100nm, and be that the absorption of Nd:YAG laser of 1064nm is big more than 10,000 times than wavelength! (have up to 90%) is moisture in the biological cell more than 70%, and the Er:YAG laser of 2.94 μ m is the laser instrument kind that very easily absorbs for hydrone, can obtain bigger action effect with less energy.This superiority be other wavelength can't be obtained, utilize it can carry out very accurate cutting and soft tissue resection operation.Yet Er:YAG laser has special biophysics effect: the interactional character of 3 μ m radiation and water saturated biological tissue is equivalent to the instantaneous heating of limited bulk, pressure raises in this volume, follow material (as blood) to gush out by incision, do not produce the blood clotting phenomenon, can not stop blooding, the easy like this wound that causes is bled too much and is infected.And during with 645-990nm laser irradiation tissue, tissue surface shrinkage owing to cytoplasmic evaporation, the following structure in surface is solidified owing to being heated, the surface texture of shrinkage and darker solidification layer will cause the contraction of blood vessel jointly, and 645-990nm laser has good tissue coagulation and haemostatic effect like this.
According to the characteristic of optical maser wavelength in biological tissue of these two kinds of laser therapy aparatuses, we lump together the laser group of these two kinds of wavelength, invent out a kind of dual-wavelength laser therapy apparatus.This dual-wavelength laser therapy apparatus not only had the fast advantage of cut, gasification rate but also have good solidify, haemostatic effect.
Summary of the invention
Purpose of the present invention just is to disclose a kind of laser therapy aparatus of dual wavelength, it not only had the fast advantage of cut, gasification rate but also have good solidify, haemostatic effect, believe that this therapy apparatus has market prospect preferably.
It is combined by 2940nmEr:YAG laser and 645-990nm laser.Through being the Lens Coupling of substrate, realize that single fiber transmits the laser system of 2940nm and 645-990nm simultaneously with sapphire crystal or fluoride glass.
A kind of laser therapy aparatus of dual wavelength is characterized in that this therapy apparatus is that preface comprises 645-990nm laser instrument, 2940nmEr:YAG laser instrument and pumping source, coupled lens and Transmission Fibers successively according to optical propagation direction.Said 645-990nm laser instrument is semiconductor laser, solid state laser and gas laser;
Said 2940nmEr:YAG laser instrument, it is for pumping source or be under the pumping source with the semiconductor laser at lamp (xenon lamp or krypton lamp), under continuous, pulse, acousto-optic or electric-optically Q-switched working method, adopting Er:YAG is that laser-activated medium produces the population inversion energy storage.Er:YAG laser crystal and laser therapy aparatus have following structure (seeing accompanying drawing): plated film on two end faces of laser crystal, one end face is plated to 2940nm light is all-trans, the other end is plated to partly exports 2940nm, make laser crystal directly constitute resonator cavity, both ends of the surface plate 645-990nm light anti-reflection film, so just can avoid of the absorption of the light of 2940nm, improve lasing efficiency the intracavity steam of common resonator cavity;
Said pumping source comprises pulsed drive source that the pulse width that can continuously change input energy or power is suitable or Continuous Drive source and as xenon lamp or the krypton lamp and the quasiconductor of pumping lamp.
Said coupled lens be sapphire crystal or fluoride glass as substrate, this material is less to the light wave transmission loss of 2940nm;
Said optical fiber is sapphire or fluoride glass optical fiber.General silica fibre is very little to 2940nm light wave transmitance, and less to 645-990nm light wave transmission loss; We find that sapphire and fluoride glass optical fiber are all lower to the loss of the light of 500nm-4000nm wavelength, light in the described like this wavelength band during by this optical fiber transmission loss all less, so our 2940nm laser and 645-990nm laser can be realized transmitting in same optical fiber.The respective wavelength laser of resonator cavity output is converged to described optical fiber one end by coupled lens,,, focus is treated by required treatment lesions position being arrived in described respective wavelength laser irradiation with the described optical fiber other end through optical fiber light-guiding.
It is the semiconductor laser of 645-990nm that above-mentioned laser therapy aparatus adopts emission wavelength, directly places an end of Er:YAG laser crystal, with the same light path of 2940nm laser, and installs and only uses a self-circulation cooling system, has dwindled the volume of system greatly.
Description of drawings:
Accompanying drawing is the pie graph of lamp pumping Er:YAG2940nm of the present invention and 645-990nm dual-wavelength laser therapy apparatus example.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the present invention are described further:
1 is the Er:YAG crystal in the accompanying drawing, the 2nd, pumping is with xenon lamp or krypton lamp, the 3rd, the optical filtering pipe of elimination pumping lamp ultraviolet radiation, the 4th, hard-pressed bale formula ellipse or round laser pump cavity, the 5th, emission wavelength is the semiconductor laser of 645-990nm, the 6th, the self-circulation cold radiator cooler, the 7th, power supply, can be to increase continuously 1200 volts from 0, operating frequency is in the adjustable Switching Power Supply of 1-50 hertz, and maybe can be output current increases continuously 30 amperes uninterruptable power from 0, and the 8th, the coupling collecting lens, it is characterized in that selecting for use 2940nm, 645-990nm light has the sapphire crystal of high permeability, and the 9th, 500nm-4000nm light all is low-loss fluoride glass optical fiber.
After starting laser, the medical worker can be according to the practical situation of the state of an illness, change the energy storage of power supply and the operating current of semiconductor pumping sources, make from the laser of the 2940nm of optical fiber output and 645-990nm and have the laser energy of certain ratio or power to reach cutting and hemostatic optimum efficiency, optical fiber can omnibearingly rotate, can directly implement to shine, gasify, cut, solidify and stop blooding like this, focus is treated focus.
Claims (6)
1, a kind of dual-wavelength laser therapy apparatus, comprise that Er:YAG crystal, pumping system, coupled lens, optical fiber and emission wavelength are the laser instrument of 645-990nm, is characterized in that: utilize corresponding 2940nm wavelength laser of radiation of Er:YAG crystal and water absworption peak and emission wavelength to be the synthetic dual-wavelength laser therapy apparatus of the laser group of 645-990nm; 645-990nm laser and 2940nm laser are coupled into optical fiber through coupled lens, realize that like this laser of 645-990nm and two kinds of wavelength of 2940nm transmits in same optical fiber.
2, require 1 described laser therapy aparatus as profit, it is characterized in that: this therapy apparatus comprises sapphire or the fluoride glass optical fiber that can low-loss transmits 645-990nm laser and 2940nm laser simultaneously.
3, require 1 described laser therapy aparatus as profit, it is characterized in that: this therapy apparatus comprises the respective wavelength laser convergence of the resonator cavity output convergence coupled lens to described optical fiber one end, this coupled lens with sapphire crystal or fluoride glass as substrate.
4, laser therapy aparatus as claimed in claim 1 is characterized in that: the laser instrument of 645-990nm is a semiconductor laser.
5, laser therapy aparatus as claimed in claim 1 is characterized in that: the laser instrument of 645-990nm is a solid state laser.
6, laser therapy aparatus as claimed in claim 1 is characterized in that: the laser instrument of 645-990nm is a gas laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100443260A CN100522095C (en) | 2004-05-25 | 2004-05-25 | Dual wavelength laser therapeutic machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100443260A CN100522095C (en) | 2004-05-25 | 2004-05-25 | Dual wavelength laser therapeutic machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1704028A true CN1704028A (en) | 2005-12-07 |
| CN100522095C CN100522095C (en) | 2009-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100443260A Expired - Fee Related CN100522095C (en) | 2004-05-25 | 2004-05-25 | Dual wavelength laser therapeutic machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011072472A1 (en) * | 2009-12-14 | 2011-06-23 | 武汉奇致激光技术有限公司 | Multifunctional laser therapeutic apparatus |
| CN103239292A (en) * | 2013-05-16 | 2013-08-14 | 周辉 | Multifunctional medical laser treatment device |
| CN110115627A (en) * | 2013-10-08 | 2019-08-13 | 鲁美斯有限公司 | Laser therapeutic equipment |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3686621T2 (en) * | 1985-07-31 | 1993-02-25 | Bard Inc C R | INFRARED LASER CATHETER DEVICE. |
| WO1993021843A1 (en) * | 1992-05-05 | 1993-11-11 | Coherent, Inc. | Device and method for variably blending multiple laser beams for medical purposes |
| DE19508100B4 (en) * | 1995-02-03 | 2004-09-02 | Storz Endoskop Gmbh | Device for coupling light rays into an optical fiber |
-
2004
- 2004-05-25 CN CNB2004100443260A patent/CN100522095C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011072472A1 (en) * | 2009-12-14 | 2011-06-23 | 武汉奇致激光技术有限公司 | Multifunctional laser therapeutic apparatus |
| US8579952B2 (en) | 2009-12-14 | 2013-11-12 | Wuhan Miracle Laser Co., Ltd | Multifunctional laser therapeutic apparatus |
| CN103239292A (en) * | 2013-05-16 | 2013-08-14 | 周辉 | Multifunctional medical laser treatment device |
| CN103239292B (en) * | 2013-05-16 | 2015-06-10 | 周辉 | Multifunctional medical laser treatment device |
| CN110115627A (en) * | 2013-10-08 | 2019-08-13 | 鲁美斯有限公司 | Laser therapeutic equipment |
| CN110115627B (en) * | 2013-10-08 | 2022-09-20 | 鲁美斯Be有限公司 | Laser treatment device |
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| Publication number | Publication date |
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| CN100522095C (en) | 2009-08-05 |
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Granted publication date: 20090805 Termination date: 20100525 |