A laser therapy device

Abstract

The present invention discloses a laser therapy device, comprising: a controller, a laser module, an optical fiber, a spectrometer, and a sensor module; the laser module and the sensor module are both connected to the controller; the optical fiber is used to transmit the laser light emitted by the laser module to the treatment tip at the end; the spectrometer is arranged on the optical fiber, and the output end of the spectrometer is connected to the treatment tip and the sensor module respectively; the controller can adjust the operating parameters of the laser module according to the feedback signals from the laser module and the sensor module. This solution can accurately control the laser power and wavelength; split the light through the spectrometer and connect to the sensor module; automatically identify the tissue in the treatment area, and perform image pattern recognition and visualization; the laser is a multi-wavelength laser, achieving better laser treatment effects and different treatment purposes; the laser module can be mixed with other light sources to achieve better treatment effects and different treatment purposes.

Description

Technical Field

[0001] The present invention relates to the technical field of dental medical lasers, and in particular to a semiconductor laser therapeutic apparatus for oral laser treatment. Background Art

[0002] Existing oral semiconductor laser therapy devices generally control the optical power through open-loop control without feedback control. This method is not very accurate and is prone to errors. Switching power and wavelength parameters to adapt to different treatment cases requires manual switching, which is relatively cumbersome. In terms of tissue recognition, they are unable to determine and identify the tissue being treated. In terms of the wavelength of light used for treatment, they generally only have the ability to emit single-wavelength laser (450nm, 650nm, or 976nm, etc.), and the therapeutic effect is relatively simple.

[0003] Therefore, how to accurately control laser operating parameters (such as power and wavelength) has become an important technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0004] In view of this, the present invention provides a laser therapeutic apparatus capable of accurately controlling laser operating parameters.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A laser therapeutic device, comprising: a controller, a laser module, an optical fiber, a beam splitter and a sensor module;

[0007] The laser module and the sensor module are both connected to the controller; the optical fiber is used to transmit the laser light emitted by the laser module to the treatment working tip at the end; the optical splitter is provided on the optical fiber, and the output end of the optical splitter is connected to the treatment working tip and the sensor module respectively;

[0008] The controller can adjust the operating parameters of the laser module according to feedback signals from the laser module and the sensor module.

[0009] Preferably, the sensor module includes: a first temperature sensor, a light intensity sensor and an image sensor.

[0010] Preferably, the laser module comprises: a second temperature sensor and a laser;

[0011] The second temperature sensor is used to obtain the temperature of the laser when the laser emits laser light.

[0012] Preferably, the control algorithm of the controller is:

[0013]

[0014]

[0015] Where a 0 , a 1 ...a n is a real number; b 0 , b 1 ...b n is a real number; c 0 , c 1 ...c n is a real number; d 0 , d 1 ...d n is a real number; e 0 , e 1 ...e n is a real number; f 0 , f 1 ...f n is a real number; g 0 , g 1 ...g n is a real number; h 0 , h 1 ...h n is a real number; k = 0, 1..., x is the parameter fed back by the first temperature sensor, y is the parameter fed back by the second temperature sensor, z is the parameter fed back by the light intensity sensor, s is the parameter fed back by the image sensor, W is the preset parameter of the obtained laser power, and λ is the preset parameter of the obtained laser wavelength.

[0016] Preferably, the controller is also capable of determining the tissue of the currently treated area based on the treatment working tip light signal fed back by the image sensor.

[0017] Preferably, the controller is further capable of outputting the image of the treatment working area fed back by the image sensor to a display screen.

[0018] Preferably, the optical splitter distributes the optical signal in the optical fiber so that the proportion of the branches transmitted to the treatment working tip is greater than or equal to the proportion of the branches transmitted to the sensor module.

[0019] Preferably, the beam splitter is a half-reflective half-mirror lens assembly.

[0020] Preferably, the laser of the laser module is a multi-wavelength laser with a wavelength range of 300nm to 3000nm.

[0021] Preferably, the laser module includes: an ultraviolet light source.

[0022] It can be seen from the above technical solutions that the laser therapy device provided by the present invention can accurately control the laser power and wavelength; split the light through a spectrometer and connect to a sensor module; automatically identify the tissue in the treatment area, and perform image pattern recognition and visualization; the laser is a multi-wavelength laser to achieve better laser therapy effects and different treatment purposes; the laser module can be mixed with other light sources to achieve better therapy effects and different treatment purposes. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A schematic structural diagram of a laser therapy device provided in an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of the composition of a laser module provided in an embodiment of the present invention;

[0026] Figure 3 A schematic diagram of the composition of a sensor module provided in an embodiment of the present invention.

[0027] Among them, 1 is a controller; 2 is a laser module, 21 is a second temperature sensor, 22 is a laser 22; 3 is an optical fiber; 4 is a spectrometer; 5 is a sensor module, 51 is a first temperature sensor, 52 is a light intensity sensor, and 53 is an image sensor. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] The laser therapy device provided in the embodiment of the present invention includes: a controller 1, a laser module 2, an optical fiber 3, a beam splitter 4 and a sensor module 5, and its structure can refer to Figure 1 As shown;

[0030] Among them, the laser module 2 and the sensor module 5 are both connected to the controller 1 and can feed back signals to the controller 1;

[0031] The optical fiber 3 is used to transmit the laser light emitted by the laser module 2 to the treatment working tip at the end, thereby performing laser treatment on the surgical area;

[0032] The optical splitter 4 is provided on the optical fiber 3. The input end of the optical splitter 4 is connected to the laser module 2, and the output end is connected to the treatment tip and the sensor module 5 respectively. The function of the optical splitter 4 is to branch and distribute the optical signal in the optical fiber 3 to the treatment tip and the sensor module 5.

[0033] The controller 1 can adjust the operating parameters (such as power and wavelength) of the laser module 2 according to the feedback signals from the laser module 2 and the sensor module 5 .

[0034] It can be seen from the above technical solution that the laser therapy device provided by the embodiment of the present invention has a controller 1 that can adjust the operating parameters of the laser module 2 according to the feedback signal, thereby improving the accuracy of laser control and reducing the generated errors; it can also realize automatic parameter switching to adapt to different treatment cases, which is convenient and fast.

[0035] Specifically, the sensor module 5 includes: a first temperature sensor 51, a light intensity sensor 52 and an image sensor 53, which are used to detect multiple parameters of the light signal distributed by the spectrometer 4. The composition structure can be referred to Figure 3 As shown, the first temperature sensor 51 can be a fiber optic temperature sensor. It uses the principle that the spectrum absorbed by some substances changes with temperature to analyze the spectrum transmitted by the fiber optic to obtain the real-time temperature. The light intensity sensor 52 can be a photodiode. It uses the principle of hot spot effect to convert the light intensity into an electrical signal. The image sensor 53 uses the photoelectric conversion function of the photoelectric device to convert the light image on the photosensitive surface into an electrical signal proportional to the light image. It can be a CCD image sensor or a CMOS image sensor.

[0036] As an example, the laser module 2 includes: a second temperature sensor 21 and a laser 22, the composition structure of which can refer to Figure 2 As shown;

[0037] The second temperature sensor 21 is used to obtain the temperature of the laser 22 when emitting laser light. The second temperature sensor may be a thermistor, which indirectly calculates the temperature of the laser 22 when emitting laser light by detecting the temperature of the laser.

[0038] In this embodiment, the control algorithm of the controller 1 is:

[0039]

[0040]

[0041] Where a 0 , a 1 ...an is a real number; b 0 , b 1 ...b n is a real number; c 0 , c 1 ...c n is a real number; d 0 , d 1 ...d n is a real number; e 0 , e 1 ...e n is a real number; f 0 , f 1 ...f n is a real number; g 0 , g 1 ...g n is a real number; h 0 , h 1 ...h n is a real number; k = 0, 1, ..., x is the parameter fed back by the first temperature sensor 51, y is the parameter fed back by the second temperature sensor 21, z is the parameter fed back by the light intensity sensor 52, s is the parameter fed back by the image sensor 53, W is the preset parameter for the obtained laser power, and λ is the preset parameter for the obtained laser wavelength. Through the above multiple feedback algorithm, the laser power and laser wavelength can be controlled more accurately.

[0042] Preferably, controller 1 is also capable of determining the tissue in the current treatment area based on the light signal from the treatment tip fed back by image sensor 53. Based on the principle of reversible optical paths, image sensor 53 can perform fuzzy recognition based on the light signal fed back by the treatment tip at the end of optical fiber 3, and then use a big data algorithm to identify and determine the tissue in the current treatment area (normal gingival tissue, gingival tumor tissue, lingual frenulum tissue, root canal lining, titanium alloy implant surface, etc.). Furthermore, particularly during intervals when laser treatment is not being performed, more accurate tissue identification can be achieved (similar to a fiber optic endoscope).

[0043] Furthermore, the controller 1 can also output the image of the treatment working area fed back by the image sensor 53 to the display screen, so as to achieve visualization, intuitiveness and convenience.

[0044] Specifically, the optical splitter 4 distributes the optical signal in the optical fiber 3 so that the proportion of the branches transmitted to the treatment working tip is greater than or equal to the proportion of the branches transmitted to the sensor module 5, thereby achieving the purpose of providing sufficient optical signals to the sensor module 5 without losing too much laser energy.

[0045] In this embodiment, the optical splitter 4 is a half-reflective half-mirror lens assembly to realize the branching and distribution of the optical signal in the optical fiber.

[0046] Preferably, the laser 22 of the laser module 2 is a multi-wavelength laser with a wavelength range of 300nm to 3000nm, such as wavelengths of 450nm, 650nm, 810nm, 976nm, 1064nm, etc., which can realize different wavelength treatments and mixed wavelength treatments to achieve better therapeutic effects.

[0047] At the same time, the laser module 2 can be mixed with other types of light sources, such as ultraviolet light sources, to achieve the function of fluorescent corrosion removal.

[0048] The following is a further introduction to this solution in conjunction with a complete embodiment:

[0049] like Figure 1 As shown, the laser therapy device structure involved in this invention mainly includes five parts: controller, laser module, optical fiber, splitter, and sensor module.

[0050] Working principle:

[0051] Both the sensor module and the laser module are connected to the controller and can provide feedback. The sensor module includes a first temperature sensor, a light intensity sensor, and an image sensor; the laser module includes a second temperature sensor and a laser. The optical fiber transmits the laser light to the distal treatment tip, thereby providing laser treatment to the surgical area. The optical splitter divides and distributes the optical signal within the optical fiber, ensuring that the proportion of light transmitted to the distal treatment tip is greater than or equal to the proportion of light transmitted to the sensor module, ensuring sufficient light signal to the sensor module without excessive laser energy loss.

[0052] The controller performs negative feedback control on the laser power and wavelength emitted by the laser according to the parameters fed back by the four sensors of the sensor module and the laser module. The control algorithm can be:

[0053]

[0054]

[0055] (where a 0 , a 1 ...a n is a real number; b 0 , b 1 ...b n is a real number; c 0 , c 1 ...c n is a real number; d 0 , d 1 ...d n is a real number; e 0 , e 1 ...en is a real number; f 0 , f 1 ...f n is a real number; g 0 , g 1 ...g n is a real number; h 0 , h 1 ...h n is a real number; k = 0, 1, ...) where x is the parameter fed back by temperature sensor 1, y is the parameter fed back by temperature sensor 2, z is the parameter fed back by the light intensity sensor, s is the parameter fed back by the image sensor, W is the preset parameter for the obtained laser power, and λ is the preset parameter for the obtained laser wavelength (this parameter, depending on the selected laser, can usually only emit a limited number of laser wavelengths, such as 450nm, 650nm, 976nm, etc.). Through the above multiple feedback algorithm, the laser power and laser wavelength can be controlled more accurately.

[0056] Based on the principle of reversible optical paths, the image sensor can perform fuzzy recognition based on the light signal fed back by the treatment tip at the end of the optical fiber. Using a big data algorithm, it can identify and determine the tissues in the current treatment area (normal gum tissue, gingival tumor tissue, lingual frenulum tissue, root canal lining, titanium alloy implant surface, etc.). Furthermore, especially during intervals when laser treatment is not being performed, tissues can be more accurately identified (similar to a fiber optic endoscope). Furthermore, the image of the treatment area can be displayed on a display screen for visualization.

[0057] While achieving the precise control and tissue recognition functions described above, the laser power and wavelength can be automatically controlled and switched. An Auto-adaptive mode can be selected, and during treatment, the controller automatically adjusts the laser power and wavelength based on the tissue recognition results, making it easy to use and preventing misoperation. If the tissue being identified is the gums, the laser parameters are adjusted to a wavelength of 450nm and a power of approximately 2W. If the tissue being identified is tissue within the root canal, the laser parameters are adjusted to a wavelength of 976nm and a power of 0.8W.

[0058] The beam splitter may be a half-reflective half-mirror lens assembly.

[0059] The laser is a multi-wavelength laser, with wavelengths of 450nm, 650nm, 810nm, 976nm, and 1064nm (ranging from 300nm to 3000nm), enabling treatment with different wavelengths and mixed wavelengths for better therapeutic effects. Furthermore, the laser module can be combined with other light sources, such as ultraviolet light, to achieve fluorescent caries removal.

[0060] The beneficial effects of this solution are:

[0061] 1) Multiple feedback control algorithms to accurately control laser power and wavelength;

[0062] 2) Automatic identification of tissue in the treatment area, image pattern recognition, and visualization;

[0063] 3) The laser is a multi-wavelength laser, and the laser module can be mixed with other light sources to achieve better laser treatment effects and different treatment purposes.

[0064] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0065] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A laser therapeutic device, characterized in that: include: Controller (1), laser module (2), optical fiber (3), optical splitter (4) and sensor module (5); The laser module (2) and the sensor module (5) are both connected to the controller (1); the optical fiber (3) is used to transmit the laser light emitted by the laser module (2) to the treatment working tip at the end; the optical splitter (4) is arranged on the optical fiber (3), and the output end of the optical splitter (4) is respectively connected to the treatment working tip and the sensor module (5); The controller (1) is capable of adjusting the operating parameters of the laser module (2) according to feedback signals from the laser module (2) and the sensor module (5); The sensor module (5) comprises: a first temperature sensor (51), a light intensity sensor (52) and an image sensor (53); The laser module (2) comprises: a second temperature sensor (21) and a laser (22); the second temperature sensor (21) is used to obtain the temperature of laser light emitted by the laser (22).

2. The laser therapy device according to claim 1, characterized in that: The control algorithm of the controller (1) is: Where a 0 , a 1 ...a n is a real number; b 0 , b 1 ...b n is a real number; c 0 , c 1 ...c n is a real number; d 0 , d 1 ...d n is a real number; e 0 , e 1 ...e n is a real number; f 0 , f 1 ...f n is a real number; g 0 , g 1 ...g n is a real number; h 0 , h 1 ...h n is a real number; k=0, 1..., x is a parameter fed back by the first temperature sensor (51), y is a parameter fed back by the second temperature sensor (21), z is a parameter fed back by the light intensity sensor (52), s is a parameter fed back by the image sensor (53), W is a preset parameter of the obtained laser power, and λ is a preset parameter of the obtained laser wavelength.

3. The laser therapy device according to claim 1, characterized in that: The controller (1) can also determine the tissue of the currently treated area based on the treatment working tip light signal fed back by the image sensor (53).

4. The laser therapy device according to claim 1, characterized in that: The controller (1) is also capable of outputting the treatment working area image fed back by the image sensor (53) to a display screen.

5. The laser therapy device according to claim 1, characterized in that: The optical splitter (4) distributes the optical signal in the optical fiber (3) so that the proportion of the branch transmitted to the treatment working tip is greater than or equal to the proportion of the branch transmitted to the sensor module (5).

6. The laser therapeutic apparatus according to claim 1, characterized in that: The beam splitter (4) is a half-reflective half-mirror lens assembly.

7. The laser therapeutic apparatus according to claim 1, characterized in that: The laser (22) of the laser module (2) is a multi-wavelength laser with a wavelength range of 300nm to 3000nm.

8. The laser therapeutic apparatus according to claim 1, characterized in that: The laser module (2) comprises: an ultraviolet light source.

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