Composite-mode multi-wavelength laser rehabilitation therapeutic apparatus

Abstract

The utility model discloses a composite mode multi-wavelength laser rehabilitation therapeutic instrument, which comprises a controller, a pulse mode driving board, a continuous mode driving board, a composite mode laser module and an optical fiber module, the laser diode group comprises a plurality of pulse laser diodes with the wavelength range of 800-1100 nm and a plurality of continuous laser diodes with the wavelength range of 400-1100 nm, and the controller is connected with the pulse mode driving board and the continuous mode driving board. The pulse mode driving board and the continuous mode driving board are respectively connected with the composite mode laser module, and the composite mode laser module is connected with the optical fiber module, so that high-efficiency coupling of a plurality of low-power laser diodes can be realized, high-peak power and multiple wavelengths are realized, pulse laser and continuous laser can be output, and the optical fiber module is connected with the pulse mode driving board and the continuous mode driving board. The flexibility is high and the effect is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of laser therapeutic instruments, and in particular relates to a composite mode multi-wavelength laser rehabilitation therapeutic instrument. Background Art

[0002] Numerous studies have shown that irradiating biological tissue with lasers in the 400-1100 nm wavelength has therapeutic effects. Currently, semiconductor lasers use low continuous optical power and low penetration depth. To increase penetration depth, higher peak power is required. However, the higher the laser's peak power, the more demanding the heat dissipation requirements are. Furthermore, the higher the laser's peak power, the greater the risk of thermal damage to the skin. In pulsed mode, the laser's peak power can reach several hundred watts, increasing penetration depth by more than tenfold compared to lasers with optical powers of tens of watts. However, the average optical power is low, and the total irradiation dose is low, limiting the effectiveness of treating skin diseases. Utility Model Content

[0003] In order to solve the above problems existing in the prior art, the present application provides a composite mode multi-wavelength laser rehabilitation therapy device, which adopts the following technical solutions:

[0004] A composite mode multi-wavelength laser rehabilitation therapy device includes a controller, a pulse mode driver board, a continuous mode driver board, a composite mode laser module and an optical fiber module. The composite mode laser module includes a laser diode group, which includes a plurality of pulse laser diodes with a wavelength range of 800 to 1100 nm for outputting pulsed lasers, and a plurality of continuous laser diodes with a wavelength range of 400 to 1100 nm for outputting continuous lasers. The controller is connected to the pulse mode driver board and the continuous mode driver board. The pulse mode driver board and the continuous mode driver board are respectively connected to the composite mode laser module, and the composite mode laser module is connected to the optical fiber module.

[0005] Preferably, the plurality of pulsed laser diodes with a wavelength range of 800 to 1100 nm, through multi-single diode coupling and fiber coupling, have a peak power of 75 to 975 W, an average power below 1 W, and a fixed ratio of average power to peak power between 0.05% and 0.1%. The pulsed laser diodes are driven by a pulse mode driver board, which controls the frequency and duty cycle of the pulsed laser waveform, and the controller controls the on and off of the laser pulses.

[0006] Preferably, the several continuous laser diodes with a wavelength range of 400 to 1100 nm, after multi-single-tube coupling and fiber coupling, have a peak power of 10 to 61.5 W and an average power of 0.1 to 61.5 W, and have the advantage of high average power. The continuous laser modulation frequency range is 0 to 20 kHz, and the ratio of average power to peak power ranges from 1% to 100%. The duty cycle and modulation frequency are controlled by a controller, and the continuous laser diode is driven by a continuous mode driver board.

[0007] Preferably, the composite mode laser module further includes a reflector and a focusing lens. The reflector is arranged in conjunction with the laser light paths of the pulse laser diode and the continuous laser diode. The inclination angles of several reflectors are coordinated with several laser light paths of the laser diode group to converge into a beam of light, thereby realizing the shaping and arrangement of multiple laser beams emitted by the multi-path discrete laser diodes. The focusing lens is located on the light path that converges into a beam of light.

[0008] Preferably, the optical fiber module further includes a ferrule, an input coupling optical fiber and an output coupling optical fiber, and several of the input coupling optical fibers enter the ferrule and output the output coupling optical fiber, thereby realizing high-power coupling of multiple low-power single-tube pulse laser diodes or continuous laser diodes.

[0009] Further preferably, the optical fiber module also includes an optical fiber power combiner, and the input coupling optical fiber enters the ferrule after being coupled by the optical fiber power combiner to output the output coupling optical fiber, the diameter of the output coupling optical fiber is more than twice the diameter of the input coupling optical fiber, and the number of the input coupling optical fibers is less than 7.

[0010] Preferably, the composite mode multi-wavelength laser rehabilitation therapeutic apparatus further includes a treatment handle, and the optical fiber module is connected to the treatment handle.

[0011] Preferably, the composite mode laser module further includes a heat sink.

[0012] Preferably, the pulse mode driving board outputs a continuous pulse train with a fixed pulse width and a fixed pulse period, the pulse width ranges from 1 to 100 ns, and the pulse period ranges from 1 to 100 μs.

[0013] Preferably, the composite mode laser module outputs pulsed laser and continuous laser, and the output wavelength includes one or a combination of wavelengths of 420±20nm, 520±20nm, 635±20nm, 810±20nm, 905±20nm, 915nm±20nm, 980nm±20nm and 1064±20nm.

[0014] Preferably, the driving current range of the pulse mode driving board and the continuous mode driving board is 20 to 200A.

[0015] Compared with the prior art, the beneficial results of the present invention are:

[0016] The utility model provides a composite mode multi-wavelength laser rehabilitation therapy device, proposes the structure of the composite mode multi-wavelength laser rehabilitation therapy device, can output continuous laser and pulsed laser, has multiple wavelengths, proposes a time overlap method and coupling mode of continuous laser and pulsed laser, adopts spatial multi-core coupling, multi-single-tube coupling and optical fiber structure, realizes spatial overlap of continuous laser and pulsed laser, output peak power can reach more than 1000W, average power can reach more than 60W, peak power is much greater than existing laser rehabilitation therapy devices, improves the flexibility, effectiveness and scope of indications of treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated into and constitute a part of this specification. The accompanying drawings illustrate the embodiments and, together with the description, serve to explain the principles of the present invention. Other embodiments and many of the expected advantages of the embodiments will be readily apparent as they become better understood by reference to the following detailed description. Other features, objects, and advantages of the present application will become more apparent by reading the detailed description of the non-limiting embodiments made with reference to the following drawings:

[0018] Figure 1 This is a structural diagram of a composite mode multi-wavelength laser rehabilitation therapy device according to a specific embodiment of the present utility model;

[0019] Figure 2 This is a schematic structural diagram of a composite mode laser module and an optical fiber module according to a specific embodiment of the present utility model;

[0020] Figure 3 This is a schematic structural diagram of an optical fiber module according to a specific embodiment of the present utility model;

[0021] Figure 4 This is a schematic structural diagram of another optical fiber module according to a specific embodiment of the present utility model;

[0022] Figure 5 This is a waveform diagram of a pulsed laser and a continuous laser output simultaneously according to a specific embodiment of the present utility model;

[0023] Figure 6 This is another waveform diagram of the simultaneous output of pulsed laser and continuous laser according to a specific embodiment of the present utility model;

[0024] Figure 7 1 is a waveform diagram of a pulsed laser according to a specific embodiment of the present invention;

[0025] Figure 8 This is a waveform diagram of a continuous laser according to a specific embodiment of the present utility model;

[0026] Figure 9 This is another waveform diagram of a continuous laser according to a specific embodiment of the present utility model.

[0027] The meaning of the numbers in the figure are: 1. Pulse mode driver board; 2. Continuous mode driver board; 3. Controller; 4. Composite mode laser module; 41. Heat sink; 421. Pulse laser diode; 422. Continuous laser diode; 43. Reflector; 44. Focusing lens; 5. Fiber module; 51. Input coupling fiber; 52. Ferrule; 53. Fiber power combiner; 6. Treatment handle. DETAILED DESCRIPTION

[0028] In the following detailed description, reference is made to the accompanying drawings, which form a part of the detailed description and are shown by illustrative specific embodiments in which the present application can be practiced. In this regard, directional terms, such as "top", "bottom", "left", "right", "up", "down", etc., are used with reference to the orientation of the figures being described. Because the components of the embodiments can be positioned in several different orientations, directional terms are used for illustrative purposes and are in no way limiting. It should be understood that other embodiments can be utilized or logical changes can be made without departing from the scope of the present application. Therefore, the following detailed description should not be taken in a limiting sense, and the scope of the present application is defined by the appended claims.

[0029] To facilitate understanding by those skilled in the art, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0030] In a specific embodiment, Figure 1 The structure diagram of the composite mode multi-wavelength laser rehabilitation therapy device according to a specific embodiment of the present invention is shown as follows: Figure 1As shown, a composite mode multi-wavelength laser rehabilitation therapy device includes a controller 3, a pulse mode driving board 1, a continuous mode driving board 2, a composite mode laser module 4, an optical fiber module 5 and a treatment handle 6. The controller 3 is connected to the pulse mode driving board 1 and the continuous mode driving board 2, and the pulse mode driving board 1 and the continuous mode driving board 2 are respectively connected to the composite mode laser module 4, and the composite mode laser module 4 is connected to the optical fiber module 5. The pulse mode driving board 1 outputs a continuous pulse train to drive the pulse laser diode 421 to operate in pulses. The continuous mode driving board 2 receives the modulation signal of the controller 3 and adjusts the continuous laser power according to the amplitude of the modulation signal. The frequency is determined by the modulation frequency output by the controller 3. The composite mode laser module 4 includes a heat sink 41. The optical fiber module 5 is connected to the treatment handle 6.

[0031] Optionally, the continuous laser diode 422 can operate in a continuous state and a repetitive pulse state. In the continuous state, the continuous laser diode 422 continuously emits light, the optical power remains constant, and the peak power and the average power are equal; in the repetitive pulse state, the pulse width is greater than or equal to 5μs, the pulse frequency is 0 to 20kHz, and the ratio of the average power to the peak power ranges from 1% to 100%. ， The duty cycle and modulation frequency are controlled and adjusted by the controller 3, and the continuous laser diode 422 is driven by the continuous mode driver board 2. The controller controls the wavelength selection, working mode selection, optical power adjustment, modulation frequency adjustment and laser treatment time of the composite mode multi-wavelength laser rehabilitation therapy device.

[0032] The duty cycle refers to the ratio of average power to peak power.

[0033] The pulse laser diode 421 refers to a laser diode that emits pulse laser light with a wavelength in the range of 800 to 1100 nm.

[0034] The pulse mode driving board 1 refers to a driving board that drives the laser diode in the composite mode laser module 4 with a wavelength range of 800 to 1100 nm to output pulse laser.

[0035] The continuous laser diode 422 refers to a laser diode that emits continuous laser light with a wavelength in the range of 400 nm to 1100 nm.

[0036] The continuous mode driving board 2 refers to a driving board that drives the laser diode in the composite mode laser module 4 with a wavelength range of 400 to 1100 nm to output continuous laser light.

[0037] The composite mode laser module 4 refers to a laser module that can output pulse laser alone, output continuous laser alone, or output pulse laser and continuous laser simultaneously.

[0038] Figure 2 A schematic diagram of the structure of a composite mode laser module and an optical fiber module is shown. The composite mode laser module 4 includes a laser diode group, which includes an L-branch pulsed laser diode 421 with a wavelength range of 800-1100 nm, for outputting pulsed laser light, and a K-branch continuous laser diode 422 with a wavelength range of 400-1100 nm, for outputting continuous laser light. The composite mode laser module 4 also includes a reflector 43 and a focusing lens 44. The reflector 43 is aligned with the laser light paths of the pulsed laser diode 421 and the continuous laser diode 422. The tilt angle of the reflector 43 matches the laser light paths of the laser diode group to converge into a single beam. The focusing lens 44 is located in the optical path that converges into a single beam. The optical fiber module also includes a ferrule 52, an input coupling fiber 51, and an output coupling fiber. Several input coupling fibers 51 enter the ferrule 52 and output the output coupling fibers.

[0039] Optionally, the diameter of the output coupling fiber is more than twice the diameter of the input coupling fiber 51, and the number of the input coupling fibers 51 is 7. Other numbers of input coupling fibers 51 may also be provided to achieve high-power coupling of multiple low-power single-tube laser diodes.

[0040] Figure 3 A schematic diagram of the structure of an optical fiber module is shown in FIG. Figure 3 As shown, seven input coupling fibers 51 enter the ferrule 52 and output the output coupling fibers. Multiple input coupling fibers 51 are directly inserted into the ferrule 52 to implement multi-single-tube spatial coupling technology, combining the seven input coupling fibers 51 into one output coupling fiber.

[0041] Figure 4 Another schematic diagram of the structure of the optical fiber module is shown in FIG. Figure 4 As shown, high-power coupling of multiple low-power single-tube laser diodes is achieved by means of a fiber power combiner 53 and multi-single-tube spatial coupling technology. The input coupling fiber 51 is coupled by the fiber power combiner 53 and enters the ferrule 52 to output the output coupling fiber.

[0042] Figure 5 A waveform diagram of the simultaneous output of pulsed laser and continuous laser is shown, wherein the horizontal axis represents time and the vertical axis represents power. The pulsed laser light output is not affected by the continuous laser light output.

[0043] Figure 6Another waveform diagram of the simultaneous output of pulsed laser and continuous laser is shown, wherein the horizontal axis represents time and the vertical axis represents power. When the continuous laser emits light, the pulsed laser outputs a pulse train. When the continuous laser stops emitting light, the pulsed laser stops outputting a pulse train, that is, the pulsed laser and the continuous laser are output synchronously.

[0044] In a specific embodiment, the composite mode multi-wavelength laser rehabilitation therapy apparatus simultaneously outputs pulsed laser and continuous laser with a peak power of 1037.5W and an average optical power of 62.476W.

[0045] Figure 7 The waveform diagram of the pulse laser mode is shown, where the horizontal axis represents time and the vertical axis represents power. The pulse width range is 1 to 100 ns, the pulse period range is 1 to 100 μs, and the drive current range is 20 to 200 A.

[0046] In a specific embodiment, the fixed pulse width of the continuous pulse train is 50 ns, and may also be other pulse widths in the range of 1 to 100 ns.

[0047] In a specific embodiment, the pulse laser wavelength is 905±20nm, the peak power of the pulse laser diode 421 is 75W, 13 pulse laser diodes 421 are used, and the duty cycle is 0.001. The duty cycle refers to the ratio of average power to peak power. After coupling, the peak power is 975W and the average power is 0.975W.

[0048] Figure 8 and Figure 9 Figure 2 shows a waveform diagram of continuous laser mode, where the horizontal axis represents time and the vertical axis represents power. Figure 8 As shown, the continuous mode driving board 2 outputs repeated square wave pulses, driving the continuous laser diode 422 to output repeated laser pulse waveforms; Figure 9 The CW mode driver board 2 outputs a constant current, driving the CW laser diode 422 to output laser light with constant optical power. The CW laser output by the CW laser diode 422 has a modulation frequency range of 0 to 20 kHz and a total power range of 10 to 61.5 W. The power of lasers with wavelengths between 400 and 700 nm is no greater than 1 W, and the power of each wavelength of the CW laser diode 422 with wavelengths between 800 and 1100 nm is between 5 and 20 W.

[0049] In a specific embodiment, one continuous laser diode 422 is used for wavelengths of 420 nm, 520 nm, and 650 nm, with an output power of 0.5 W for each wavelength. Two continuous laser diodes 422 are combined for wavelengths of 810 nm, 915 nm, 980 nm, and 1064 nm, with an output power of 15 W for each wavelength, for a total continuous laser power of 61.5 W.

[0050] In order to help those skilled in the art better understand the technical solution of the present application in the specific embodiments, although a working mode related to the present application is proposed, it cannot be considered that the innovation of the present application mainly lies in the usage process or steps. The innovation of the present application mainly lies in the structure of the instrument.

[0051] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the utility model disclosed herein is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the concept of the utility model. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

[0052] Obviously, those skilled in the art can make various modifications and changes to the embodiments of the present application without departing from the spirit and scope of the present application. In this way, if these modifications and changes are within the scope of the claims of the present application and their equivalents, the present application is also intended to cover these modifications and changes. The word "comprising" does not exclude the presence of other elements or steps not listed in the claims. The simple fact that certain measures are recited in mutually different dependent claims does not indicate that the combination of these measures cannot be used to advantage. Any reference signs in the claims should not be considered as limiting the scope.

Claims

1. A composite mode multi-wavelength laser rehabilitation therapy device, characterized in that: The invention comprises a controller, a pulse mode driving board, a continuous mode driving board, a composite mode laser module and an optical fiber module. The composite mode laser module comprises a laser diode group, which comprises a plurality of pulse laser diodes with a wavelength range of 800 to 1100 nm and a plurality of continuous mode laser diodes with a wavelength range of 400 to 1100 nm. The controller is connected to the pulse mode driving board and the continuous mode driving board. The pulse mode driving board and the continuous mode driving board are respectively connected to the composite mode laser module. The composite mode laser module is connected to the optical fiber module.

2. A composite mode multi-wavelength laser rehabilitation therapy device according to claim 1, characterized in that: The plurality of pulsed laser diodes with wavelengths ranging from 800 to 1100 nm have peak powers of 75 to 975 W after multi-single-tube coupling and optical fiber coupling, and average powers below 1 W. The ratio of average power to peak power is fixed and ranges from 0.05% to 0.1%.

3. The composite mode multi-wavelength laser rehabilitation therapy device according to claim 1, characterized in that: The plurality of continuous laser diodes with a wavelength range of 400 to 1100 nm, after multi-single-tube coupling and optical fiber coupling, have a peak power of 10 to 61.5 W and an average power of 0.1 to 61.5 W. The continuous laser modulation frequency range is 0 to 20 kHz, and the ratio of average power to peak power ranges from 1% to 100%.

4. The composite mode multi-wavelength laser rehabilitation therapy device according to claim 1, characterized in that: The composite mode laser module further includes a reflector and a focusing lens. The reflector is arranged in conjunction with the laser light paths of the pulse laser diode and the continuous laser diode. The inclination angles of several reflectors are coordinated with the laser light paths of the laser diode group to converge into a beam of light. The focusing lens is located on the light path that converges into the beam of light.

5. The composite mode multi-wavelength laser rehabilitation therapy device according to claim 1, characterized in that: The optical fiber module further includes a ferrule, an input coupling optical fiber and an output coupling optical fiber, wherein a plurality of the input coupling optical fibers enter the ferrule and output the output coupling optical fibers.

6. The composite mode multi-wavelength laser rehabilitation therapy device according to claim 5, characterized in that: The optical fiber module also includes an optical fiber power combiner. The input coupling optical fiber enters the ferrule after being coupled by the optical fiber power combiner to output the output coupling optical fiber. The diameter of the output coupling optical fiber is more than twice the diameter of the input coupling optical fiber, and the number of the input coupling optical fibers is less than 7.

7. The composite mode multi-wavelength laser rehabilitation therapeutic apparatus according to claim 1, characterized in that: Also included is a treatment handle, and the optical fiber module is connected to the treatment handle.

8. The composite mode multi-wavelength laser rehabilitation therapy device according to claim 1, characterized in that: The composite mode laser module further includes a heat sink.

9. The composite mode multi-wavelength laser rehabilitation therapy device according to claim 1, characterized in that: The pulse mode driving board outputs a continuous pulse train with a fixed pulse width and a fixed pulse period, wherein the pulse width ranges from 1 to 100 ns, and the pulse period ranges from 1 to 100 μs.

10. The composite mode multi-wavelength laser rehabilitation therapy device according to claim 1, characterized in that: The composite mode laser module outputs pulsed laser and continuous laser, and the output wavelength includes one or a combination of wavelengths including 420±20nm, 520±20nm, 635±20nm, 810±20nm, 905nm±20nm, 915nm±20nm, 980nm±20nm and 1064±20nm.

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