CN204364121U - Low-power portable Green laser surgery equipment - Google Patents
Low-power portable Green laser surgery equipment Download PDFInfo
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- CN204364121U CN204364121U CN201420795440.6U CN201420795440U CN204364121U CN 204364121 U CN204364121 U CN 204364121U CN 201420795440 U CN201420795440 U CN 201420795440U CN 204364121 U CN204364121 U CN 204364121U
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Abstract
Low-power portable Green laser surgery equipment, comprise laser head, laser controller and optical fiber, described laser head and laser controller are electrically connected by leader cable, described optical fiber is connected with the fiber coupler in laser head, control laser head by laser controller and produce the green laser of 532nm, again through fiber coupler, by the green laser coupled that exports, to enter diameter 200 μm of numerical aperture NA be the optical fiber of 0.22, the wall of urinary bladder of the needs excision that laser energy carry by optical fiber is surperficial; This utility model optimizes the cooling system of equipment, reduces the power of equipment, reduces the volume of equipment, have that power is low, energy consumption is low, noise is little, volume is little, stable, be easy to carry, cheap feature.
Description
Technical field
This utility model relates to the technical field of medical equipment for laser ablation treatment tissue, particularly low-power portable Green laser surgery equipment.
Background technology
Tumor of bladder is the modal urinary system malignant tumor of China, and wherein 70% is non-Myometrial involvement type tumor of bladder.Traditional underwent transurethral resection of bladder tumor is shredded tumor tissues, causes obturator nerve reflection to cause vesical perforation, is needed the shortcoming of general anesthesia to avoid.For this reason, start to rise based on the novel transurethral resection of bladder tumor of laser or vaporisation techniques, particularly low-power (30-40 watt) per urethra directly goes out green laser tumor of bladder monoblock enucleation and has good operability, peri-operation period safety and efficacy, is considered to be with a wide range of applications to the non-Myometrial involvement type tumor of bladder for the treatment of.Current green laser medical equipment power mostly is 80 or 120 watts, cooling system need use compressor to carry out temperature control, this kind of mode causes equipment price expensive, volume is large, noise is high, be unfavorable for the operation of laser instrument efficient stable, be unfavorable for that doctor carries transport, be more unfavorable in vast basic hospital promotion and application.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the purpose of this utility model is to provide low-power portable Green laser surgery equipment, optimize the cooling system of equipment, reduce the power of equipment, reduce the volume of equipment, have that power is low, energy consumption is low, noise is little, volume is little, stable, be easy to carry, cheap feature.
In order to achieve the above object, the technical scheme that this utility model is taked is:
Low-power portable Green laser surgery equipment, comprise: TEC temperature-controlled cooling system 20, described TEC temperature-controlled cooling system 20 is made up of semiconductor cooler 21, fin 22 and cooling chamber 23, the end face of described cooling chamber 23 and bottom surface respectively with a compact siro spinning technology of semiconductor cooler 21, the another side of described semiconductor cooler 21 is connected with fin 22 respectively;
Laser head 1, described laser head 1 comprises fiber coupler 5, semiconductor laser pumping head 6, Q-switch 7, two double frequency generator 8, first chamber mirror 9, second chamber mirror 10, reflecting mirror 11 and outgoing mirror 12, a Laser emission light path of described semiconductor laser pumping head 6 arranges reflecting mirror 11, the laser-bounce light path of described reflecting mirror 11 arranges Q-switch 7, the laser delivery optics of described Q-switch 7 is arranged the first chamber mirror 9; Another Laser emission light path of described semiconductor laser pumping head 6 arranges outgoing mirror 12, the laser-bounce light path of described outgoing mirror 12 is arranged two double frequency generators 8, the laser delivery optics of described two double frequency generators 8 arranges the second chamber mirror 10, the Laser output light path of described outgoing mirror 12 arranges fiber coupler 5;
Laser controller 2, described laser controller 2 also comprises laser driver 13, RF radio driver 14, two double frequency generator temperature controller 15 and main cooling system 16, described laser driver 13 is electrically connected with semiconductor laser pumping head 6, for semiconductor laser pumping head 6 provides DC current; Described RF radio driver 14 is electrically connected with Q-switch 7, for Q-switch 7 provides modulated radiofrequency signal; Described two double frequency generator temperature controllers 15 are electrically connected with two double frequency generators 8, accurately control the temperature of two double frequency generators 8; Water tank is provided with in described main cooling system 16;
Power control system, described power control system provides power supply to export for whole low-power portable Green laser surgery equipment and controls;
Described cooling chamber 23 is communicated with the water tank of main cooling system 16 by inlet pipeline 24, and described cooling chamber 23 is communicated with laser head 1 by outlet pipeline 25, and described laser head 1 is communicated with the water tank of main cooling system 16.
Described fiber coupler 5 comprises condenser lens 17 and structure of fiber_optic 18, described optical fiber 3 is arranged on laser head 1 by structure of fiber_optic 18, described condenser lens 17 is arranged in the Laser output light path of outgoing mirror 12, and laser coupled exports by described condenser lens 17 in optical fiber 3.
Diameter 200 μm of numerical aperture NA of described optical fiber 3 are 0.22.
Described semiconductor laser pumping head 6 is continuous semiconductor emitter, and this solid state laser gain medium is Nd:YAG glo-stick, can produce the gain of light of wavelength at 1064nm.
Described two double frequency generators 8 adopt lbo crystal or ktp crystal, and its temperature can set and regulate, and both ends of the surface plating 1064nm/532nm anti-reflection film, is positioned over the position near the second chamber mirror 10.
Described Q-switch 7 adopts acousto-optic modulation, and be positioned over the position near the first chamber mirror 9, the repetition frequency range of its work is 1kHz to 50kHz.
Operation principle of the present utility model is:
Control laser head 1 by laser controller 2 and produce the green laser of 532nm, then through fiber coupler 5, the green laser coupled exported is entered the optical fiber 3 that diameter 200 μm of numerical aperture NA are 0.22, the wall of urinary bladder surface of the needs excision that laser energy is carried by optical fiber 3.TEC temperature-controlled cooling system 20 adopts coolant temperature in semiconductor cooler 21 controlled cooling model chamber 23; Outside can use fan to accelerate the flowing of fin 22 ambient air, promotes thermal release.
The beneficial effects of the utility model are:
1, the power of this equipment is little, energy consumption is low, and Transmission Fibers core diameter is little, is convenient to non-Myometrial involvement type tumor of bladder operation technique.
2, the TEC temperature-controlled cooling system 20 of this equipment adopts the design of semiconductor cooler 21, fin 22 and cooling chamber 23, reduces equipment volume, is more easy to carry.
3, cost is low, and equipment is inexpensive, tallies with the national condition, and is beneficial to basic hospital practical application.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
Fig. 2 is TEC temperature-controlled cooling system 20 schematic diagram of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail.
See accompanying drawing, this utility model is low-power portable Green laser surgery equipment, comprise: TEC temperature-controlled cooling system 20, described TEC temperature-controlled cooling system 20 is made up of semiconductor cooler 21, fin 22 and cooling chamber 23, the end face of described cooling chamber 23 and bottom surface respectively with a compact siro spinning technology of semiconductor cooler 21, the another side of described semiconductor cooler 21 is connected with fin 22 respectively;
Laser head 1, described laser head 1 comprises fiber coupler 5, semiconductor laser pumping head 6, Q-switch 7, two double frequency generator 8, first chamber mirror 9, second chamber mirror 10, reflecting mirror 11 and outgoing mirror 12, a Laser emission light path of described semiconductor laser pumping head 6 arranges reflecting mirror 11, the laser-bounce light path of described reflecting mirror 11 arranges Q-switch 7, the laser delivery optics of described Q-switch 7 is arranged the first chamber mirror 9; Another Laser emission light path of described semiconductor laser pumping head 6 arranges outgoing mirror 12, the laser-bounce light path of described outgoing mirror 12 is arranged two double frequency generators 8, the laser delivery optics of described two double frequency generators 8 arranges the second chamber mirror 10, the Laser output light path of described outgoing mirror 12 arranges fiber coupler 5;
Laser controller 2, described laser controller 2 also comprises laser driver 13, RF radio driver 14, two double frequency generator temperature controller 15 and main cooling system 16, described laser driver 13 is electrically connected with semiconductor laser pumping head 6, for semiconductor laser pumping head 6 provides DC current; Described RF radio driver 14 is electrically connected with Q-switch 7, for Q-switch 7 provides modulated radiofrequency signal; Described two double frequency generator temperature controllers 15 are electrically connected with two double frequency generators 8, accurately control the temperature of two double frequency generators 8; Water tank is provided with in described main cooling system 16;
Power control system, described power control system provides power supply to export for whole low-power portable Green laser surgery equipment and controls;
Described cooling chamber 23 is communicated with the water tank of main cooling system 16 by inlet pipeline 24, and described cooling chamber 23 is communicated with laser head 1 by outlet pipeline 25, and described laser head 1 is communicated with the water tank of main cooling system 16.
Described fiber coupler 5 comprises condenser lens 17 and structure of fiber_optic 18, described optical fiber 3 is arranged on laser head 1 by structure of fiber_optic 18, described condenser lens 17 is arranged in the Laser output light path of outgoing mirror 12, and laser coupled exports by described condenser lens 17 in optical fiber 3.
Diameter 200 μm of numerical aperture NA of described optical fiber 3 are 0.22.
Described semiconductor laser pumping head 6 is continuous semiconductor emitter, and this solid state laser gain medium is Nd:YAG glo-stick, can produce the gain of light of wavelength at 1064nm.
Described two double frequency generators 8 adopt lbo crystal or ktp crystal, and its temperature can set and regulate, and both ends of the surface plating 1064nm/532nm anti-reflection film, is positioned over the position near the second chamber mirror 10.
Described Q-switch 7 adopts acousto-optic modulation, and be positioned over the position near the first chamber mirror 9, the repetition frequency range of its work is 1kHz to 50kHz.
As shown in Figure 1, the laser surgery system of embodiment of the present utility model comprises: laser head 1, for generation of green laser; Optical fiber 3, for exporting green laser; Laser controller 2, controls to support for laser head 1 and TEC temperature-controlled cooling system 20 provide; TEC temperature-controlled cooling system 20, for providing cooling support for the semiconductor laser pumping head 6 of laser head 1.The Nd:YAG laser that this utility model utilizes semiconductor laser pumping head 6 to produce, exports the green laser of high power of 532nm by optical fiber 3, carry out laser therapy to non-Myometrial involvement type tumor of bladder.
Specifically, laser head 1 comprises: semiconductor laser pumping head 6 (having semiconductor laser pumping source and laser medium), Q-switch 7, two double frequency generator 8 and folding laser cavity, wherein, described folding laser cavity is made up of the first chamber mirror 9, second chamber mirror 10, reflecting mirror 11 and outgoing mirror 12, Q-switch 7 is arranged near the first chamber mirror 9, and two double frequency generators 8 are arranged near the second chamber mirror 10.First chamber mirror 9 and reflecting mirror 11 are coated with the highly reflecting films to 1064nm wavelength.Second chamber mirror 10 is coated with the highly reflecting films to 1064nm oscillating laser wavelength 532nm double-frequency laser wavelength and dual wavelength in the one side of intracavity.Outgoing mirror 12 is coated with the high-reflecting film to 1064nm and the anti-reflection film for 532nm towards the one side of intracavity, and outgoing mirror 12 is coated with the anti-reflection film to 1064nm and 532nm dual wavelength towards the one side outside chamber.
Semiconductor laser pumping head 6 comprises solid laser medium such as, Nd:YAG laser bar and be positioned at the multiple semiconductor lasers as pumping source of side of solid laser medium.Such as, LD array carries out profile pump to Nd:YAG laser medium rod to multiple semiconductor lasers in semiconductor laser pumping head 6.Semiconductor laser pumping head 6 produces the gain of light at wavelength 1064nm.
Q-switch 7 is acousto-optic modulators, and the frequency range of modulation is generally at 1kHz to 50kHz.The Q-value of folding laser cavity modulated by Q-switch 7, produces the laser pulse of nanosecond pulse width, high-peak power.High-peak power is necessary to changing first-harmonic efficiently to two frequency doubling green lights.Q-switch 7 is placed on the place near the first chamber mirror 9, and intracavity beam is here almost collimation.Such light beam can make Q-switch 7 pairs of laser cavities carry out switch most effectively, obtains vaporizing the green laser of helpful high power pulses for soft tissue.
The first-harmonic of 1064nm is converted to the second harmonic of 532nm by two double frequency generators 8.Two double frequency generators 8 comprise LBO or KTP bis-frequency-doubling crystal, machinery and temperature control equipment.Laser-damaged threshold value in view of lbo crystal is at least 5 times of the damage threshold of ktp crystal pipe, and lbo crystal is the first-selection of two double frequency generators 8 in high power semiconductor pump green laser.The cutting angle of crystal can be 1 type cutting, also can be 2 type cuttings.Two surfaces of the mouth of sharing the same light of crystal are all coated with can by multilayer dielectric film anti-reflection for light to 1064nm near-infrared and 532n.Two double frequency generators 8 are placed on the thinnest place of intracavity beam near the second chamber mirror 10, namely at waist place.The high power density at waist place ensure that second harmonic produces effectively.
Semiconductor laser pumping head 6 produce laser via, the laser of generation is reflected by reflecting mirror 11 by one end, through Q-switch 7, then through the reflection of the first chamber mirror 9, transfers to outgoing mirror 12; The laser of generation is reflected by the second chamber mirror 10 by the other end, after two double frequency generator 8 frequency conversions, transfers to outgoing mirror 12.Laser is exported by mirror 12, and the condenser lens 17 through fiber coupler 5 is transferred to optical fiber 3 and exports.Optical fiber 3 guided laser, on the wall of urinary bladder surface of the needs excision that the other end is carried laser by endoscope.
As shown in Figure 1, intracavity near-infrared light beam is constrained between the first chamber mirror 9 and the second chamber mirror 10, and intracavity blue beam is constrained between the second chamber mirror 10 and outgoing mirror 12.532nm output beam exports after outgoing mirror 12.Output beam directly injects condenser lens 17, is then coupled into the one end of the optical fiber 3 be fixed on structure of fiber_optic 18.Condenser lens 17 and structure of fiber_optic 18 form fiber coupler 5.By optical fiber 3 by Laser output, the laser lighting of output is penetrated in soft tissue surfaces.In the laser surgery comprising Lasar prostate operation, optical fiber 3 can use together with endoscope or cystoscope.
Laser controller 2 comprises laser driver 13, RF radio driver 14, two double frequency generator temperature controller 15 and main cooling system 16 etc.Laser controller 2 is powered by power line 19, is connected with laser head 1 by leader cable 4.Laser driver 13 provides direct current DC electric current to the semiconductor laser be arranged in semiconductor laser pumping head 6.RF radio driver 14 provides modulated radiofrequency signal to Q-switch 7.Two double frequency generator temperature controllers 15 are for accurately controlling the temperature of two double frequency generators 8.Main cooling system 16 provides constant temperature liquid coolant for laser head 1.
TEC temperature-controlled cooling system 20 is made up of semiconductor cooler 21, fin 22 and cooling chamber 23.TEC temperature-controlled cooling system 20 adopts semiconductor cooler 21 (TEC) controlled cooling model liquid temp, controls to run to reach laser efficient stable by the high-precision temperature of TEC.
The end face of cooling chamber 23 is connected with semiconductor cooler 21 respectively with bottom surface, and the another side of conductor refrigerator 21 is connected with fin 22.Cooling chamber 23 is communicated with the water tank of main cooling system 16 by inlet pipeline 24, and cooling chamber 23 is communicated with laser head 1 by outlet pipeline 25, and laser head 1 is communicated with the water tank of main cooling system 16 and utilizes liquid coolant to cool.Utilize fan to accelerate the flowing of the air of fin 22 outside, promote thermal release, accelerate heat radiation.
In figure, 1 is laser head, 2 is laser controller, 3 is optical fiber, 4 is leader cable, 5 is fiber coupler, 6 is semiconductor laser pumping head, 7 is Q-switch, 8 is two double frequency generators, 9 is the first chamber mirror, 10 is the second chamber mirror, 11 is reflecting mirror, 12 is outgoing mirror, 13 is laser driver, 14 is RF radio driver, 15 is temperature controller, 16 is main cooling system, 17 is condenser lens, 18 is structure of fiber_optic, 19 is power line, 20 is TEC temperature-controlled cooling system, 21 is semiconductor cooler, 22 is fin, 23 is cooling chamber, 24 is inlet pipeline, 25 is outlet pipeline.
Claims (6)
1. low-power portable Green laser surgery equipment, it is characterized in that, comprise: TEC temperature-controlled cooling system (20), described TEC temperature-controlled cooling system (20) is made up of semiconductor cooler (21), fin (22) and cooling chamber (23), the end face of described cooling chamber (23) and bottom surface respectively with a compact siro spinning technology of semiconductor cooler (21), the another side of described semiconductor cooler (21) is connected with fin (22) respectively;
Laser head (1), described laser head (1) comprises fiber coupler (5), semiconductor laser pumping head (6), Q-switch (7), two double frequency generators (8), first chamber mirror (9), second chamber mirror (10), reflecting mirror (11) and outgoing mirror (12), a Laser emission light path of described semiconductor laser pumping head (6) arranges reflecting mirror (11), the laser-bounce light path of described reflecting mirror (11) is arranged Q-switch (7), the laser delivery optics of described Q-switch (7) is arranged the first chamber mirror (9), another Laser emission light path of described semiconductor laser pumping head (6) arranges outgoing mirror (12), the laser-bounce light path of described outgoing mirror (12) is arranged two double frequency generators (8), the laser delivery optics of described two double frequency generators (8) is arranged the second chamber mirror (10), the Laser output light path of described outgoing mirror (12) is arranged fiber coupler (5),
Laser controller (2), described laser controller (2) also comprises laser driver (13), RF radio driver (14), two double frequency generator temperature controllers (15) and main cooling system (16), described laser driver (13) is electrically connected with semiconductor laser pumping head (6), for semiconductor laser pumping head (6) provides DC current; Described RF radio driver (14) is electrically connected with Q-switch (7), for Q-switch (7) provides modulated radiofrequency signal; Described two double frequency generator temperature controllers (15) are electrically connected with two double frequency generators (8), accurately control the temperature of two double frequency generators (8); Described main cooling system is provided with water tank in (16);
Power control system, described power control system provides power supply to export for whole low-power portable Green laser surgery equipment and controls;
Described cooling chamber (23) is communicated with by the water tank of inlet pipeline (24) with main cooling system (16), described cooling chamber (23) is communicated with laser head (1) by outlet pipeline (25), and described laser head (1) is communicated with the water tank of main cooling system (16).
2. low-power portable Green laser surgery equipment according to claim 1, it is characterized in that: described fiber coupler (5) comprises condenser lens (17) and structure of fiber_optic (18), described optical fiber (3) is arranged on laser head (1) by structure of fiber_optic (18), described condenser lens (17) is arranged in the Laser output light path of outgoing mirror (12), and laser coupled exports by described condenser lens (17) in optical fiber (3).
3. low-power portable Green laser surgery equipment according to claim 2, is characterized in that: the diameter of described optical fiber (3) is 200 μm, and numerical aperture NA is 0.22.
4. low-power portable Green laser surgery equipment according to claim 1, it is characterized in that: described semiconductor laser pumping head (6) is continuous semiconductor emitter, the solid state laser gain medium of semiconductor laser pumping head (6) is Nd:YAG glo-stick, can produce the gain of light of wavelength at 1064nm.
5. low-power portable Green laser surgery equipment according to claim 1, it is characterized in that: described two double frequency generators (8) adopt lbo crystal or ktp crystal, its temperature can set and regulate, both ends of the surface plating 1064nm/532nm anti-reflection film, is positioned over the position near the second chamber mirror (10).
6. low-power portable Green laser surgery equipment according to claim 1, it is characterized in that: described Q-switch (7) adopts acousto-optic modulation, be positioned over the position near the first chamber mirror (9), the repetition frequency range of its work is 1kHz to 50kHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420795440.6U CN204364121U (en) | 2014-12-15 | 2014-12-15 | Low-power portable Green laser surgery equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420795440.6U CN204364121U (en) | 2014-12-15 | 2014-12-15 | Low-power portable Green laser surgery equipment |
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| Publication Number | Publication Date |
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| CN204364121U true CN204364121U (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420795440.6U Expired - Fee Related CN204364121U (en) | 2014-12-15 | 2014-12-15 | Low-power portable Green laser surgery equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109602491A (en) * | 2018-12-19 | 2019-04-12 | 威海威高激光医疗设备股份有限公司 | Prostate laser ablation dual-wavelength high-power surgery apparatus |
| CN112952534A (en) * | 2021-01-27 | 2021-06-11 | 山西大学 | Device for suppressing laser intensity noise by using frequency doubling cavity and measuring method thereof |
-
2014
- 2014-12-15 CN CN201420795440.6U patent/CN204364121U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109602491A (en) * | 2018-12-19 | 2019-04-12 | 威海威高激光医疗设备股份有限公司 | Prostate laser ablation dual-wavelength high-power surgery apparatus |
| CN112952534A (en) * | 2021-01-27 | 2021-06-11 | 山西大学 | Device for suppressing laser intensity noise by using frequency doubling cavity and measuring method thereof |
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Legal Events
| Date | Code | Title | Description |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 Termination date: 20171215 |