A kind of semiconductor laser synthesizer therapeutic equipment
Technical field
The invention belongs to medical instruments field, it is related to laser therapeutic equipment, close particularly to a kind of novel semi-conductor laser
Grow up to be a useful person therapeutic equipment.
Background technology
Since laser was 20th century, after atomic energy, computer, semiconductor, the another invention of great significance of the mankind, it is referred to as
" knife the fastest ", its principle were found by famous American physicist Einstein early in 1916.20th century four are sent out greatly
Bright is " laser, atomic energy, semiconductor, computer ".Laser is widely used in medical field now.Low-intensity laser irradiation controls curative effect
Really, it is subject to the affirmative of domestic and international expert according to clinical verification.Be mainly used in treatment brain diseases, angiocardiopathy, diabetes,
Tumour, leukaemia, psychotic disorder etc..According to healthy medical discovery, the Blood fluorescence of laser excitation is mainly received in 600-670
Between rice.Excite blood by ground state to excitation state, the laser by 630-650 nanometer is most effective as lasing light emitter, the effect for the treatment of
Best.There is good curative effect the convalescence that low level laser is treated after the prevention to cardiovascular disease early stage and morbidity.For Asia
The physical recovery of healthy population and flight against senium of human body have certain effect.
In prior art, multiple semiconductor laser therapeutic instruments occur, prevention of disease and treatment have certain effect.
But mostly adopt intracavity frequency doubling means, that is, frequency-doubling crystal is placed on have as applicant between laser crystal and reflector plate
Patent name is:" a kind of laser cure apparatus ", (patent No.:00108495.X) provide a kind of 670nm laser cure apparatus.Using
This pure intracavity frequency doubling technology is although efficiency high, but power swing is big, less stable.And larger power swing is easy
Injury to working the mischief property of patient.
Content of the invention
Present invention aim to address above-mentioned the deficiencies in the prior art, a kind of new pattern laser synthesizer therapeutic equipment is provided, makes
It has preferable power stability and higher efficiency.
In order to realize goal of the invention, the present invention adopts the following technical scheme that:
A kind of semiconductor laser synthesizer therapeutic equipment, including:Semiconductor laser and control system,
Semiconductor laser includes for semiconductor laser synthesizer:Laser medium crystal, be used for pumped laser medium crystal
Pumping semiconductor laser, Laser Focusing that pumping is exported with the semiconductor laser optics on laser medium crystal
Coupled system, make laser medium be subject to semiconductor laser to excite after, produce population inversion, thus between resonator produce base
The speculum of ripple laser generation and outgoing mirror, the harmonic laser frequency multiplication exporting outgoing mirror are the frequency-doubling crystal of red laser, incite somebody to action
The harmonic laser of non-frequency multiplication is reflected back laserresonator, and exports the feedback mirrors of the red laser for treatment of generation;For
The red laser of output is focused on the end face of Transmission Fibers, and pass through this optical fiber, be transferred to therapentic part, that is treated is poly-
Focus lens;Laser medium crystal, speculum and outgoing mirror composition laserresonator, frequency-doubling crystal is positioned over outgoing mirror and feedback mirrors
Between, after condenser lens is arranged at feedback mirrors.
Control system includes:
Power module, is connected with semiconductor laser synthesizer, provides working power needed for described semiconductor laser synthesizer;
Semiconductor laser synthesizer steady operation module, is connected with semiconductor laser synthesizer, power module and system control module, control
The stable power output of whole system processed;System control module, with power module and semiconductor laser synthesizer steady operation mould
Block is connected, and controls whole system work.
Described semiconductor laser synthesizer therapeutic equipment, wherein:Laser medium crystal is neodymium-doped laser dielectric crystal, is selected from
Nd:YVO4 or Nd:GdVO4 crystal.
Described semiconductor laser synthesizer therapeutic equipment, wherein, Transmission Fibers select medical optical fiber, swash for transmitting ruddiness
Light, and the red laser that therapeutic equipment is exported is directed to therapentic part, is treated.
Described semiconductor laser synthesizer therapeutic equipment, wherein, frequency-doubling crystal can be selected from KTP, LBO, PPKTP or PPLN
Crystal.
Described semiconductor laser synthesizer therapeutic equipment, wherein, the minute surface of speculum is coated with the semiconductor laser to pumping
Bundle is high thoroughly, the blooming to the total reflection of 1300nm~1500nm wavelength.The eyeglass of outgoing mirror is coated with to 1300nm~1500nm ripple
Long laser part reflection, the blooming to red laser total reflection.The eyeglass of feedback mirrors is coated with to 1300nm~1500nm wavelength
Laser total reflection, the blooming anti-reflection to red laser.
Described semiconductor laser synthesizer therapeutic equipment, wherein, semiconductor laser synthesizer can emissive porwer be 650nm
The red laser of 700nm.
Described semiconductor laser synthesizer therapeutic equipment, wherein, system control module includes CPU microprocessor, as half
The kernel control chip of conductor Laser synthesizer, controls the work of whole system.This control module also can arrange display circuit, electricity
Source detection, warning circuit, wherein, can arrange four LED, 3 LED are respectively used to show power, also a LED is
Relay indicating light, 30MIN is power supply indicator.Triode Q7 is power detecting IC, when the too low alarm of power supply.
Described semiconductor laser synthesizer therapeutic equipment, wherein, power module could be arranged to including:External electric supply socket
JP1, three-terminal regulator block Q1, internal battery powers system input JP2, constitute triode Q3 and Q4 of charging circuit and be used for controlling
The triode Q9 that system charges.
Described semiconductor laser synthesizer therapeutic equipment, wherein, semiconductor laser synthesizer steady operation module includes:Defeated
Go out the triode Q8 of Laser synthesizing device stabilized power source, provide semiconductor laser synthesizer power output socket JP5, comparison signal to put
Big comparator chip U1, control triode Q10, Q11 of power adjusting effect, as the three of semiconductor laser synthesizer power supply
Level pipe Q2, as information negative-feedback, stablizes the triode Q6 of power output.
Beneficial effects of the present invention
Semiconductor laser synthesizer of the present invention adds fundamental wave feedback technique using cavity external frequency multiplication, combines in cavity external frequency multiplication and chamber
The scheme of frequency doubling technology, is placed between output chip and feedback mirrors using frequency-doubling crystal, and the frequency doubling technology of this lumen type solves sharp
A light technical stability difficult problem.The technology of the present invention both make use of the excellent output stability of cavity external frequency multiplication, maintains in chamber again again
The greater efficiency of frequency, achieves the purpose that efficiency and stability are taken into account well.
Meanwhile, present invention employs microprocessor (CPU) control system and set with reference to semiconductor laser synthesizer of the present invention
The circuit control system put, it is possible to provide safe and reliable treatment operation.It is provided with semiconductor laser synthesizer in system and stablize work
Make module, can effective strengthening system controllable function it is ensured that this laser therapeutic apparantus has constant power output, and possess steady
Fixed performance.
Laser synthesizing device therapeutic equipment of the present invention is it is expected to play a significant role on therapeutic equipments of new generation.Can be used for light to move
Mechanics is treated, and carries out laser irradiation to nasal cavity or acupuncture point, for vascular headache and cerebral infarction, post-traumatic brain syndrome and chronic
The treatment of Cardial or cerebral vascular diseases.It is a kind of effective laser therapeutic equipment.
Brief description
Fig. 1 is semiconductor laser synthesizer therapeutic equipment fundamental diagram of the present invention
Fig. 2 is semiconductor laser synthesizer internal structure schematic diagram
Fig. 3 is the circuit diagram of power module in control system of the present invention
Fig. 4 is the circuit diagram of control button in control system of the present invention
Fig. 5 is the circuit diagram of system control module and semiconductor laser Senthesizer module in control system of the present invention
In Fig. 1,11 is semiconductor laser synthesizer, and 12 is system control module, and 13 is power module, and 14 swash for semiconductor
Light synthesizer steady operation module, 15 is treatment head (optical fiber head).
In Fig. 2,1 is pumping semiconductor laser, and 2 is optical coupling system, and 3 is speculum, and 4 is that laser medium is brilliant
Body, 5 is outgoing mirror, and 6 is frequency-doubling crystal, and 7 is feedback mirrors, and 8 is condenser lens, and 9 is the medical optical fiber of transmission red laser.
In Fig. 3, JP1 is external electric supply socket, and triode Q1 is three-terminal regulator block, and JP2 is that internal battery powers system is defeated
Enter end, triode Q3, Q4, composition charging circuit control circuit, triode Q9 is as charge control.
In Fig. 4, JP4 is control button socket.
In Fig. 5, microprocessor AT89C2051 is as CPU microprocessor, semiconductor laser synthesizer in system control module
In steady operation module, triode Q8 exports the stable power supply of Laser synthesizing device, and chip U1 is a comparator, triode Q10,
Q11, play control power adjusting effect.Triode Q2 is laser head power supply." keyboard " of in figure can connect control button JP4.Three-level
Pipe Q6, as information negative-feedback, stablizes power output.
Specific embodiment
Below in conjunction with the accompanying drawings technical solution of the present invention is illustrated.
Semiconductor laser synthesizer therapeutic equipment of the present invention includes semiconductor laser and control system, wherein,
Semiconductor laser is the semiconductor laser synthesizer of the present invention, and its internal structure is shown in Fig. 2, and in Fig. 2,1 is pumping
With semiconductor laser (LD), in the form of being combined using many, its output wavelength is 808nm or 880nm.2 is optical coupled
System, can be conventional LD laser coupled part, can be such as spherical mirror, aspherical mirror, binary optical lenses one kind therein
Or a combination thereof, and prepare the anti-reflection film of pump light in its light pass surface.3 is speculum, can be using the structure of sphere and plane, on mirror
It is coated with the reflectance coating that thoroughly, 1300nm~1500nm wavelength be totally reflected high to pump light;4 is laser medium crystal, can be Nd:
YVO4 or Nd:Gd:VO4 crystal;5 is outgoing mirror, and using planar structure, eyeglass plating is reflected to 1300nm~1500nm part, right
The blooming of red laser total reflection;6 is (can carry temperature controlled) frequency-doubling crystal, can be KTP, LBO, period polarized
The additive mixing crystal such as KTP (PPKTP), periodically poled lithium niobate (PPLN);7 is feedback mirrors, and using planar structure, eyeglass plates
Have and 1300nm~1500nm laser is all-trans, the blooming anti-reflection to red laser.8 is condenser lens;9 is transmission red laser
Medical optical fiber, 10 be pumping semiconductor laser 1 driving power supply.
The control system of the present invention includes power module 13, system control module 12 and semiconductor laser synthesizer and stablizes work
Make module 14.
Referring to Fig. 3, power module 13 includes external electric supply socket JP1, three-terminal regulator block Q1.Power supply is inserted through external power supply
After seat JP1, wherein Q1 is three-terminal regulator block, the supply voltage (VCC) of 3 ends output circuit after diode D1.
This power module 13 also includes internal battery powers system, and JP2 is internal battery powers system input, by Q3,
Q4, composition charging circuit control circuit, when client is when using, do not charge, when client stops using, Q3, Q4 start working,
Now battery could be charged.Triode Q9 is used for charge control, the colelctor electrode of Q9 and CPU microprocessor (AT89C2051)
Pin connects.
Power module 13 is connected with semiconductor laser synthesizer 11, provides described semiconductor laser synthesizer 11 required work
Power supply;
Referring to Fig. 4, system control module 12 includes CPU microprocessor, is swashed as semiconductor from microprocessor AT89C2051
The kernel control chip of light synthesizer, controls the work of whole system.This control module also include display circuit, power detecting,
Warning circuit, wherein, in four LED, 3 are respectively used to show power, 3MW, 4MW, 5MW, and also one is work instruction
Lamp, 30MIN is power supply indicator.Triode Q7 is power detecting IC, when the too low alarm of power supply.
System control module 12, is connected with power module 13 and semiconductor laser synthesizer steady operation module 14, controls
Whole system works.
Semiconductor laser synthesizer steady operation module 14 includes triode Q6, Q8, Q10, Q11, chip U1, U2 etc. electricity
Road.Wherein Q8 exports the stable power supply of Laser synthesizing device, and JP5 is to provide Laser synthesizing device power output socket, and chip U1 is one
Individual comparator, comparison signal amplifies by 1 pin output, and triode Q10, Q11 are used for controlling power adjusting to act on.Q2 is laser head
(semiconductor laser synthesizer) power supply." keyboard " of in figure connects control button JP4.Triode Q6 is used for information negative-feedback, stable
Power output.Series resistance connects the pin of CPU microprocessor (AT89C2051) to the base stage of triode Q6, Q10, Q11 respectively, and three
The collector series resistance of level pipe Q6 is connected with the pin of Q2 and U1 chip.
Those of ordinary skill in the art can realize this control system according to circuit diagram completely, does not do other here
Word description.
The control system of the present invention can be arranged in a main frame body.Referring to Fig. 1, by being arranged on main body correct position
On laser connector laser leaded light line (laser coupled line is also ampere wires) one end phase with semiconductor laser synthesizer
Even, the other end of semiconductor laser synthesizer also can be connected with treatment head 15 (optical fiber head), contact human body surface, treated.
The auxiliary accessories relevant with treating control also can be arranged on main body, such as control to treatment related select button or
Shift knob and some selective parts, such as power selection key and treatment start key etc..
Power-on, the laser of semiconductor laser 1 output focuses on laser medium crystal 4 by optical coupling system 2
On, after laser medium crystal is excited by semiconductor laser, produce population inversion, thus by speculum 3 and 5 groups of outgoing mirror
1300nm~1500nm laser generation is produced between the resonator becoming.1300nm~1500nm the laser producing is defeated by outgoing mirror 5
Go out, occurrence frequency conversion on frequency-doubling crystal 6, produce 670nm-700nm red laser, the red laser of generation is by feedback mirrors 7
Output, remaining 1300nm~1500nm laser reflection returns resonator, plays chamber external feedback effect, improves on frequency-doubling crystal
1300nm~1500nm laser intensity.The red laser of output, line focus lens 8 focus on the end face of medical optical fiber 9, and pass through
This Optical Fiber Transmission, to therapentic part, is treated.
Specific embodiment
Embodiment 1:
Using 808nm LD (in the form of being many combinations), optical coupling system 2 can be normal to pumping semiconductor laser 1
LD laser coupled part, can be such as spherical mirror, aspherical mirror, binary optical lenses one kind therein or a combination thereof, and
Prepare the anti-reflection film of pump light in its light pass surface.Laser medium crystal 4 adopts Nd:YVO4 crystal, it is right that plane mirror 3 plates
808nm is anti-reflection, the blooming to 1342nm laser total reflection, and flat output mirror 5 plates and 1342nm part is reflected, complete to 671nm
The blooming of reflection, frequency-doubling crystal 6 adopts PPLN, and plane feedback mirror 7 plates anti-reflection to 671nm, optics to 1342nm total reflection
Film.
Power-on 10, the laser of pumping semiconductor laser 1 output focuses on laser by optical coupling system 2 and is situated between
On matter crystal 4, after laser medium crystal 4 is excited by semiconductor laser, produce population inversion, thus by speculum 3 He
1342nm laser generation is produced between the resonator of outgoing mirror 5 composition.The 1342nm laser producing is exported by outgoing mirror 5, again
Occurrence frequency conversion on frequency crystal 6, produces 671nm red laser, and the 671nm red laser of generation is exported by feedback mirrors 7, remaining
1342nm laser reflection return resonator, play the effect of chamber external feedback, improve the 1342nm laser intensity on frequency-doubling crystal.Output
671nm red laser line focus lens 8 focus on, and inject medical optical fiber end face, are transmitted to therapentic part by medical optical fiber 9.
Embodiment 2:
Using 880nm LD (in the form of being many combinations), optical coupling system 2 can be normal to pumping semiconductor laser 1
LD laser coupled part, can be such as spherical mirror, aspherical mirror, binary optical lenses one kind therein or a combination thereof, and
Prepare the anti-reflection film of pump light in its light pass surface.Laser medium crystal 4 adopts Nd:YVO4 crystal, speculum 3 plates and 880nm is increased
Thoroughly, the membrane system to 1342nm laser total reflection, outgoing mirror 5 plates and 1342nm part is reflected, the membrane system to 671nm total reflection, times
Frequency crystal 6 adopts lbo crystal, and feedback mirrors 7 plate anti-reflection to 671nm, film to 1342nm total reflection.
Power-on 10, the laser of pumping semiconductor laser 1 output focuses on laser by optical coupling system 2 and is situated between
On matter crystal 4, after laser medium crystal 4 is excited by semiconductor laser, produce population inversion, thus by speculum 3 He
1342nm laser generation is produced between the resonator of outgoing mirror 5 composition.The 1342nm laser producing is exported by outgoing mirror 5, again
Occurrence frequency conversion on frequency crystal 6, produces 671nm red laser, and the 671nm red laser of generation is exported by feedback mirrors 7, remaining
1342nm laser reflection return resonator, play the effect of chamber external feedback, improve the 1342nm laser intensity on frequency-doubling crystal.Output
671nm red laser line focus lens 8 focus on, and inject medical optical fiber 9 end face, are transmitted to therapentic part by medical optical fiber 9.
Embodiment 3:
Using 808nm LD (in the form of being many combinations), optical coupling system 2 can be normal to pumping semiconductor laser 1
LD laser coupled part, can be such as spherical mirror, aspherical mirror, binary optical lenses one kind therein or a combination thereof, and
Prepare the anti-reflection film of pump light in its light pass surface.Laser medium crystal 4 adopts Nd:GdVO4 crystal, it is right that plane mirror 3 plates
808nm is anti-reflection, the membrane system to 1340nm laser total reflection, and flat output mirror 5 plates and 1340nm part is reflected, and 670nm is all-trans
The membrane system penetrated, frequency-doubling crystal 6 adopts PPKTP crystal, and plane feedback mirror 7 plates anti-reflection to 670nm, film to 1340nm total reflection.
Power-on 10, the laser of pumping semiconductor laser 1 output focuses on laser by optical coupling system 2 and is situated between
On matter crystal 4, after laser medium crystal 4 is excited by semiconductor laser, produce population inversion, thus by speculum 3 He
1340nm laser generation is produced between the resonator of outgoing mirror 5 composition.The 1340nm laser producing is exported by outgoing mirror 5, again
Occurrence frequency conversion on frequency crystal 6, produces 670nm red laser, and the 670nm red laser of generation is exported by feedback mirrors 7, remaining
1340nm laser reflection return resonator, play the effect of chamber external feedback, improve the 1340nm laser intensity on frequency-doubling crystal.Output
670nm red laser line focus lens 8 focus on, and inject medical optical fiber 9 end face, are transmitted to therapentic part by medical optical fiber 9.
Above description is only embodiment of the present invention, obviously can do for a person skilled in the art a lot of improve and
Vary without departing from the essence spirit of the present invention, all these changes and improvements are considered as within the scope of the present invention.