Light spot positioning system for laser sliding treatment

Abstract

The invention discloses a light spot positioning system for laser sliding treatment, which comprises a sensing unit, a main control processing unit, a distance sensor module and a distance information decoding module, which are used for determining the light emitting position of a light spot and measuring the sliding distance between a laser window and the skin. The next light emitting moment of the treatment light spot is judged by comparing the sliding distance with the light spot size; the infrared imaging sensor module is used for determining the position of a light spot treatment area; the touch sensor module is used for judging the light emitting authority of the laser; the infrared imaging sensor module identifies treatment position information; the laser output window is provided with a treatment area cooling module. According to the invention, energy absorbed by different treatment parts can be ensured to be consistent through a light spot auxiliary positioning technology and different sliding treatment speeds, so that a treatment end point can be accurately judged, the operation difficulty of the whole machine is reduced, and the difference between operators and operation techniques is reduced to the minimum.

Description

Technical Field

[0001] The invention relates to the technical field of laser window spot auxiliary positioning, and in particular to a spot positioning system for laser sliding treatment. Background Art

[0002] Currently, laser skin treatment devices are operated in a manner that an operator holds a laser output window and performs point-by-point treatment or rapid sliding treatment on the skin surface.

[0003] The point-motion treatment method can accurately locate the light spot, and the energy reaching the skin is easy to control, but the treatment efficiency is very low.

[0004] In the process of laser treatment of the skin surface, rapid and continuous sliding treatment for large areas of epidermis such as the back and legs has been applied clinically. The operating principle is that when the laser is continuously output, the operator slides the laser output window back and forth on the patient's skin surface, and the laser continuously acts on the skin surface over which the laser output window slides. This treatment method has the characteristics of fast treatment speed and low operating difficulty.

[0005] However, during the sliding treatment process, it is impossible to accurately control the uniform absorption of energy by the skin in the surgical area. Since the sliding speed of the laser window is different for each operator and the positioning position varies from person to person, the treatment effects of different parts of the skin in the same treatment area vary greatly. The energy absorbed by the skin will vary greatly, making it impossible to ensure the clinical treatment effect, and it is not easy to judge whether the treatment endpoint has been reached.

[0006] Whether it is point-by-point treatment or quick-sliding treatment, the following problems will arise when the laser output parameters are fixed: the process of holding the laser treatment head will be unstable, and treatment deviations will be caused by human factors such as jitter; the laser output of current laser skin treatment devices is mostly pulse output, so it is difficult for the operator to accurately coordinate the moving position and light output time during the treatment process, so there will be multiple treatments or missed treatments in the treatment area; the fixed-point treatment method is relatively slow, affecting the treatment efficiency. Summary of the invention

[0007] To this end, the present invention provides a spot positioning system for laser sliding treatment. A photoelectric sensor for positioning is arranged next to the laser output window of the laser treatment instrument. The sliding distance between the laser window and the skin can be measured, and this parameter is fed back to the main controller. The main controller software determines the time of the next light output during the sliding treatment process based on this, ensuring seamless connection between the two spots, so as to solve the above-mentioned problems in the prior art.

[0008] In order to achieve the above object, the present invention provides the following technical solutions:

[0009] A spot positioning system for laser sliding treatment, comprising a sensing unit and a main control processing unit, wherein the sensing unit comprises a distance sensor module, an infrared imaging sensor module, a tactile sensor module, an initial parameter setting module, a laser output window and a treatment area cooling module; the main control processing unit comprises a distance information decoding module, an infrared imaging display module, a main control CPU processing module and a physical state of the laser output window; the distance sensor module, the infrared imaging sensor module, the tactile sensor module, the distance information decoding module and the infrared imaging display module are all electrically connected to the main control CPU processing module;

[0010] The distance sensor module and the distance information decoding module are used to determine the light spot emission position, measure the sliding distance between the laser window and the skin, and determine the next light emission time of the treatment spot by comparing the sliding distance and the light spot size;

[0011] Infrared imaging sensor module, used to determine the location of the light spot treatment area;

[0012] The tactile sensor module is used to determine the laser's light output authority. When the tactile sensor determines that the treatment head has left the treatment skin area, the laser output is prohibited;

[0013] The treatment displacement distance is identified by the initial parameter setting module and the distance sensor module; the treatment position information is identified by the infrared imaging sensor module;

[0014] The laser output condition of the laser output window is determined by the treatment displacement distance, the state of the laser output window and the treatment position information to determine the next emission parameter state of the laser.

[0015] The laser initial parameter setting module includes the first laser pulse width, light emission time, peak power and treatment spot size;

[0016] The laser output window is provided with a treatment area cooling module.

[0017] Furthermore: the light emission time range is 0.05ms~400ms; the peak power range is 1W~3000W; the treatment spot size range is 5mm*5mm~50mm*50mm; the laser working wavelength range is 0.5um~10um.

[0018] Further: the cooling method adopted by the treatment area cooling module is any one of natural wind, liquid nitrogen, and refrigeration plate.

[0019] Further: the laser output window and the distance sensor module window are on the same surface, and the working method is:

[0020] During treatment, the laser output window is close to the skin, and the window of the distance sensor module is also close to the skin;

[0021] After emitting a laser, the photoelectric sensor will collect the distance between the laser window and the skin, analyze the displacement distance through the optical distance information decoding module, and feed it back to the main control CPU processing module;

[0022] The main control CPU processing module will compare the distance the laser output window moves with the set value of the treatment spot size, and emit the next laser pulse after moving to the next spot.

[0023] Further: the same side of the laser output window is equipped with an infrared imaging sensor module to monitor the treatment position information in real time during the sliding treatment process; the working process of the infrared imaging sensor module is:

[0024] The situation of the treatment area can be understood through the infrared imaging display module, and the infrared imaging sensor module transmits the information to the main control CPU processing module;

[0025] The main control CPU processing module uses the temperature recognition algorithm to analyze the number of treatments in the treatment area;

[0026] When the main control CPU processing module recognizes that the same area has been treated more than once, it will give the operator a warning.

[0027] When the main CPU processing module recognizes that the same area has been treated more times than the set safety parameters, it will stop emitting lasers.

[0028] Furthermore: a tactile sensor module is provided on the same side of the laser output window, and the tactile sensor module identifies the physical state of the laser output window and determines whether the window is in contact with the skin of the treatment area. The laser can be emitted only when it is identified that the window is in contact with the skin, otherwise the laser is not allowed to be emitted.

[0029] Further: The processing process of the infrared imaging sensor module is as follows:

[0030] The infrared imaging sensor module transmits the information of the laser output window and the cooling module of the treatment area to the main control CPU processing module; the main control CPU processing module can capture the image of the treatment surface and mark the position;

[0031] The images and marking information during the treatment process are compared, and then the state of the action surface is determined to determine the state of the laser light output; the comparison of the images and marking information during the treatment process includes the proportion of image overlapping positions, the number of repeated marking positions, and the accumulated marked light energy.

[0032] Further: the processing process of the distance sensor module is as follows:

[0033] The tactile sensor module identifies the physical state of the laser output window; captures the movement signal of the treatment surface through the distance sensor module, and calculates the movement distance based on the movement signal analysis; compares the initial set spot size value to determine the laser light output state.

[0034] Furthermore: the infrared imaging sensor module, the distance sensor module and the tactile sensor module are used in coordination with each other.

[0035] The present invention has the following advantages: through the light spot assisted positioning technology, different sliding treatment speeds can ensure that the energy absorbed by different treatment parts is consistent, so the treatment endpoint can be accurately judged, the operating difficulty of the whole machine is reduced, and the differences caused by operators and operating techniques are minimized. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a system block diagram of the spot positioning system for laser sliding treatment of the present invention.

[0037] Figure 2 This is a flow chart of the infrared sensor module processing in the spot positioning system for laser sliding treatment of the present invention.

[0038] Figure 3 Schematic diagram of the processing process of the distance sensing module in the spot positioning system for laser sliding treatment of the present invention.

[0039] In the figure: 1. Initial parameter setting module; 2. First laser pulse width; 3. Peak power; 4. Treatment spot size; 5. Distance sensor module; 6. Distance information decoding module; 7. Infrared imaging sensor module; 8. Infrared imaging display module; 9. Tactile sensor module; 10. Main control CPU processing module; 11. Treatment displacement distance; 12. Treatment position information; 13. Laser output window; 14. Laser output window physical state; 15. Treatment area cooling module. DETAILED DESCRIPTION

[0040] The following is an explanation of the implementation of the present invention by specific specific examples. People familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. It should be understood that these embodiments are only to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technical engineers in this field can make some non-essential improvements and adjustments to the present invention based on the contents of the above invention; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] like Figures 1 to 3As shown, a spot positioning system for laser sliding treatment includes a sensing unit and a main control processing unit. The sensing unit includes a distance sensor module 5, an infrared imaging sensor module 7, a tactile sensor module 9, an initial parameter setting module 1, a laser output window 13 and a treatment area cooling module 15. The main control processing unit includes a distance information decoding module 6, an infrared imaging display module 8, a main control CPU processing module 10 and a laser output window physical state 14.

[0042] The distance sensor module 5 , the infrared imaging sensor module 7 , the tactile sensor module 9 , the distance information decoding module 6 , and the infrared imaging display module 8 are all electrically connected to the main control CPU processing module 10 .

[0043] The distance sensor module 5 and the distance information decoding module 6 are used to determine the light spot emission position, and are characterized by measuring the sliding distance between the laser window and the skin, and judging the next light emission time of the treatment light spot by comparing the sliding distance and the light spot size.

[0044] The infrared imaging sensor module 7 is used to determine the position of the light spot treatment area; the infrared imaging sensor module 7 and the treatment area cooling module 15 both aim to monitor the skin condition of the treatment area; by extracting transient thermal effect information, combined with the temperature rise area and temperature change gradient, the treatment position, the number of position repetitions and the position overlap ratio can be marked.

[0045] The tactile sensor module 9 is used to determine the light output authority of the laser. When the tactile sensor determines that the treatment head has left the treatment skin area, the laser output is prohibited.

[0046] The treatment displacement distance 11 identified by the initial parameter setting module 1 and the distance sensor module 5 ; and the treatment position information 12 identified by the infrared imaging sensor module 7 .

[0047] The laser output condition of the laser output window 13 is determined by the treatment displacement distance 11 , the state of the laser output window 13 and the treatment position information 12 to determine the parameter state of the laser for the next emission.

[0048] The laser initial parameter setting module 1 includes the first laser pulse width 2, light emission time, peak power 3 and treatment spot size 4; the light emission time range is 0.05ms~400ms; the peak power range is 1W~3000W; the treatment spot size range is 5mm*5mm~50mm*50mm; the laser working wavelength range is 0.5um~10um.

[0049] The laser output window 13 is provided with a treatment area cooling module 15, wherein the treatment area cooling module 15 can be a cooling measure such as natural wind, liquid nitrogen, or a refrigeration sheet.

[0050] The laser output window 13 is on the same surface as the window of the distance sensor module 5. In this embodiment, in order to achieve the best use effect, the distance sensor module 5 adopts a photoelectric sensor; at the same time, during the treatment process, the laser output window 13 is close to the skin, and the window of the distance sensor module 5 is also close to the skin; after emitting a laser, the photoelectric sensor will collect the distance moved between the laser window and the skin, and analyze the displacement distance through the optical distance information decoding module 6, and feed it back to the main control CPU processing module 10, and the main control CPU processing module 10 will compare the distance moved by the laser output window 13 with the setting value of the treatment spot size 4, and emit the next laser pulse after moving to the next spot, so that the two spots are closely connected, there is no gap in the middle and there is no overlapping part, which ensures that the energy obtained by each piece of skin in the treatment area is consistent.

[0051] In this embodiment, the distance information decoding module 6 is a photoelectric sensor decoding module.

[0052] The same surface of the laser output window 13 is equipped with an infrared imaging sensor module 7, the purpose of which is to monitor the treatment position information 12 at all times during the sliding treatment process. The equipment operator can understand the situation of the treatment area through the infrared imaging display module 8. At the same time, the infrared imaging sensor module 7 transmits the information to the main control CPU processing module 10, and the main control CPU processing module 10 analyzes the number of treatments of the treatment area through the temperature recognition algorithm; when the main control CPU processing module 10 recognizes that the same area has been treated more than once, it will give the operator a prompt and warning; when the main control CPU processing module 10 recognizes that the same area has been treated more than once, it will stop emitting laser.

[0053] It ensures the safety of the patient's treatment area and prevents multiple treatments of the same area due to rapid sliding and the randomness of different personnel's techniques, which results in inconsistent treatment energy and avoids overtreatment.

[0054] The same surface of the laser output window 13 is equipped with a tactile sensor module 9, which identifies the physical state 14 of the laser output window and determines whether the window is in contact with the skin of the treatment area. The laser can be emitted only after it is identified that the skin is in contact, otherwise the laser is not allowed to be emitted. The significance of this module is to prevent the laser from still being emitted when the treatment surface leaves the patient's skin treatment area during the operator's fast sliding process. At this time, the patient's skin does not receive the cooling effect of the cooling module of the treatment area on the laser output window 13, which will cause the risk of burns in the patient's treatment area.

[0055] like Figure 2 The processing process of the infrared imaging sensor module shown in FIG. 1 is as follows:

[0056] The infrared imaging sensor module 7 transmits the information of the laser output window 13 and the treatment area cooling module 15 to the main control CPU processing module 10. The main control CPU processing module 10 can capture the treatment surface image and mark the position, and compare the image and marking information during the treatment process, and then judge the state of the action surface, so as to judge the laser light output state; the comparison of the image and marking information during the treatment process here includes the image overlapping position ratio, the number of repeated times of the marking position and the accumulated marked light energy.

[0057] like Figure 3 The distance sensor module processing process shown is as follows:

[0058] The tactile sensor module 9 identifies the physical state 14 of the laser output window, and captures the movement signal of the treatment surface through the distance sensor module 5, and calculates the movement distance based on the movement signal analysis, and compares it with the initial set spot size value to determine the laser light output state.

[0059] The infrared imaging sensor module 7 , the distance sensor module 5 and the tactile sensor module 9 are used in coordination with each other.

[0060] In order to further improve the understanding of the technical solution of this embodiment, the following examples are given:

[0061] The size of the spot treatment head is 10mm*20mm, where the direction of 10mm is the working movement direction of the handpiece.

[0062] Set the initial treatment laser parameters, such as 10 J energy, 100 ms pulse width, and single pulse laser output.

[0063] When the pedal is pressed (equivalent to a trigger signal), the laser starts working with a light emission time of 100ms. At the same time, after the pedal is pressed, the therapeutic handpiece starts to move manually, and the infrared distance sensor returns the movement information to the main control, and the moving distance, moving speed and moving time are analyzed. When the moving distance is greater than or equal to the value of 10mm + moving speed * 100ms, the laser emits the next pulse.

[0064] There are several constraints in this process:

[0065] Tactile sensor module: Tactile sensor (capacitive sensor), the main control board (CPU processing module) needs to collect the valid information sent back by the tactile sensor and judge the movement as valid, otherwise it is considered as invalid movement. (For invalid treatment);

[0066] Treatment area temperature sensor module: The main control board needs to collect the temperature information of the treatment area in real time. When the temperature of the treatment area is less than or equal to the set temperature, the laser light is effective, otherwise it will not light. (For treatment safety judgment);

[0067] Infrared imaging sensor module: The infrared imaging sensor module is characterized by a wide-angle zoom, which can continuously collect the skin status at the laser action site. Before treatment, the infrared imaging sensor module captures the contour of the treatment subject (human body), extracts edge information, and stores it. During treatment, after stepping on the pedal, the infrared imaging sensor module records the movement direction of the handpiece and the treatment area targets on both sides of the handpiece and stores them; the temperature of the area treated by the laser rises significantly, and the main control extracts the contour of the treatment area through the stored image and marks the position relative to the contour of the overall treatment area. It is displayed on the host panel through the host computer; when the marked area is found to overlap and the number of times is greater than or equal to the set value, the laser light is invalid. (For treatment effectiveness and safety judgment).

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A spot positioning system for laser sliding therapy, comprising a sensor unit and a main control processing unit, characterized in that: The sensing unit includes a distance sensor module, an infrared imaging sensor module, a tactile sensor module, an initial parameter setting module, a laser output window and a treatment area cooling module; The main control processing unit includes a distance information decoding module, an infrared imaging display module, a main control CPU processing module and a physical state of a laser output window; the distance sensor module, the infrared imaging sensor module, the tactile sensor module, the distance information decoding module and the infrared imaging display module are all electrically connected to the main control CPU processing module; The distance sensor module and the distance information decoding module are used to determine the light spot emission position, measure the sliding distance between the laser window and the skin, and determine the next light emission time of the treatment spot by comparing the sliding distance and the light spot size; The infrared imaging sensor module is used to determine the location of the spot treatment area; the infrared imaging sensor module transmits the information of the laser output window and the treatment area cooling module to the main control CPU processing module; the main control CPU processing module can capture the treatment surface image and mark the location; And compare the images and marking information during the treatment process, and then judge the state of the action surface, so as to judge the state of the laser light output; Compare the images and marking information during the treatment process, including the image overlap ratio, the number of times the marking position is repeated, and the accumulated light energy of the marking; The tactile sensor module is used to determine the laser's light output authority. When the tactile sensor determines that the treatment head has left the treatment skin area, the laser output is prohibited; The treatment displacement distance is identified by the initial parameter setting module and the distance sensor module; the infrared imaging sensor module identifies the treatment position information.

2. The spot positioning system for laser sliding therapy according to claim 1, characterized in that: The laser output condition of the laser output window is determined by the treatment displacement distance, the state of the laser output window and the treatment position information to determine the next emission parameter state of the laser; The laser initial parameter setting module includes the first laser pulse width, light emission time, peak power and treatment spot size; The laser output window is provided with a treatment area cooling module.

3. The spot positioning system for laser sliding therapy according to claim 2, characterized in that: The light emission time ranges from 0.05ms to 400ms; the peak power ranges from 1W to 3000W; the treatment spot size ranges from 5mm*5mm to 50mm*50mm; and the laser operating wavelength ranges from 0.5um to 10um.

4. The spot positioning system for laser sliding therapy according to claim 2, characterized in that: The cooling method adopted by the treatment area cooling module is any one of natural wind, liquid nitrogen, and refrigeration sheet.

5. The spot positioning system for laser sliding therapy according to claim 1, characterized in that: The laser output window and the distance sensor module window are on the same surface, and the working method is: During treatment, the laser output window is close to the skin, and the window of the distance sensor module is also close to the skin; After emitting a laser, the photoelectric sensor will collect the distance between the laser window and the skin, analyze the displacement distance through the optical distance information decoding module, and feed it back to the main control CPU processing module; The main control CPU processing module will compare the distance the laser output window moves with the set value of the treatment spot size, and emit the next laser pulse after moving to the next spot.

6. The spot positioning system for laser sliding therapy according to claim 1, characterized in that: The same side of the laser output window is equipped with an infrared imaging sensor module to monitor the treatment position information at all times during the sliding treatment process; the working process of the infrared imaging sensor module is: The situation of the treatment area can be understood through the infrared imaging display module, and the infrared imaging sensor module transmits the information to the main control CPU processing module; The main control CPU processing module uses the temperature recognition algorithm to analyze the number of treatments in the treatment area; When the main control CPU processing module identifies that the same area has been treated more than once, it will give the operator a warning. When the main CPU processing module recognizes that the same area has been treated more times than the set safety parameters, it will stop emitting lasers.

7. The spot positioning system for laser sliding therapy according to claim 1, characterized in that: The same side of the laser output window is equipped with a tactile sensor module, which identifies the physical state of the laser output window and determines whether the window is in contact with the skin of the treatment area. The laser can be emitted only when it is identified that the window is in contact with the skin, otherwise the laser is not allowed to be emitted.

8. The spot positioning system for laser sliding therapy according to claim 1, characterized in that: The distance sensor module processing process is as follows: The tactile sensor module identifies the physical state of the laser output window; captures the movement signal of the treatment surface through the distance sensor module, and calculates the movement distance based on the movement signal analysis; compares the initial set spot size value to determine the laser light output state.

9. The spot positioning system for laser sliding therapy according to claim 1, characterized in that: The infrared imaging sensor module, the distance sensor module and the tactile sensor module are used in coordination with each other.

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