A laser positioning aid

Abstract

The application relates to the field of laser treatment equipment, in particular to a laser positioning auxiliary device. The device comprises an arc-shaped track, a first driving component, a sliding block assembly, a second driving component, a laser emission assembly and a positioning wheel. The first driving component is connected with the arc-shaped track and used for driving the arc-shaped track to swing; the second driving component is connected with the sliding block assembly and used for driving the sliding block assembly to move on the arc-shaped track; the laser emission assembly comprises a laser emission end and the positioning wheel; the positioning wheel is in contact with the scalp and used for keeping the distance between the laser emission end and the scalp area in a preset interval. In the application, an X, Y and Z three-axis system can be formed, and the laser emission end is driven to accurately reach any position of the scalp. Meanwhile, through the positioning wheel, laser irradiation can be performed on each scalp area at a preset focal length, so that the laser irradiated on the scalp area can reach a preset intensity, and the treatment effect is improved.

Description

Technical Field

[0001] This invention relates to the field of laser therapy equipment, and in particular to a laser positioning auxiliary device. Background Technology

[0002] Laser-assisted hair regrowth typically involves non-ablative fractional lasers in the infrared bands such as 1565nm, 1550nm, and 2940nm. This therapy primarily aims to promote hair growth and thus improve hair loss. For example, in laser treatment of androgenetic alopecia, the handpiece precisely controls the laser emission energy at the corresponding wavelength, forming micron-sized thermal coagulation columns on the tissue in the treatment area. This significantly increases the skin penetration and absorption of topical medications through the "microporous channel effect," while also helping to activate hair follicle stem cells and promote hair follicles into the growth phase, thereby promoting hair regeneration.

[0003] In related technical processes, treatment is often performed by manually holding the laser emitting device and repeatedly scanning the target scalp area. However, on the one hand, it is difficult to accurately control the focal length of the laser by holding it manually, and on the other hand, the large number of treatment areas on the scalp makes it difficult for manual workers to maintain an ideal holding distance for a long time. As a result, the laser irradiated on the scalp area is difficult to reach the preset intensity, which significantly reduces the treatment effect. Summary of the Invention

[0004] To address the aforementioned technical problems, the technical solution adopted by this invention is as follows:

[0005] According to one aspect of the present invention, a laser positioning auxiliary device is provided, comprising: an arc-shaped track, a first driving component, a slider assembly, a second driving component, a laser emitting assembly, and a positioning wheel;

[0006] The first driving component is connected to the arc-shaped track and is used to drive the arc-shaped track to swing around the first axis; the first axis is the line connecting the two ends of the arc-shaped track;

[0007] The slider assembly is slidably mounted on the arc-shaped track; the second driving component is connected to the slider assembly and is used to drive the slider assembly to move on the arc-shaped track;

[0008] The laser emitting assembly includes a laser emitting end, a clamping part, and a positioning wheel;

[0009] A clamping part is disposed on the slider assembly, and the laser emitting end is slidably disposed relative to the clamping part. A positioning wheel is disposed on the laser emitting end. The positioning wheel contacts the scalp and is used to keep the distance between the laser emitting end and the scalp area within a preset range.

[0010] The slider assembly includes: a drive gear, two belt guide pulleys, a transmission belt, and a sliding housing;

[0011] The sliding housing is slidably clamped on the arc-shaped track. The drive gear and two belt guide pulleys are rotatably disposed inside the sliding housing. The rotation axes of the drive gear and the two belt guide pulleys are parallel to each other, and the two belt guide pulleys are symmetrically arranged with respect to the drive gear. The second drive component is connected to the drive gear.

[0012] A belt placement groove is provided on the outer arc surface of the arc track. The transmission belt is placed in the belt placement groove, and the two ends of the transmission belt are respectively fixed to the two ends of the belt placement groove. A part of the transmission belt is sleeved on the transmission gear and two belt guide pulleys, and the transmission teeth on the transmission belt mesh with the transmission gear.

[0013] This invention has at least one of the following beneficial effects:

[0014] In this invention, an arc-shaped track oscillates around a first axis, a sliding component slides on the arc-shaped track, and the laser emitting end moves relative to the clamping part. This forms a three-axis system that moves along mutually perpendicular X, Y, and Z axes, allowing the laser emitting end to precisely reach any position on the scalp. Simultaneously, by setting a positioning wheel at the laser emitting end, the distance between the laser emitting end and the scalp is ensured to be a relatively fixed value at any position, i.e., the laser focal length. Therefore, the laser positioning auxiliary device of this invention can drive the laser emitting end to any position on the scalp for treatment, and can ensure that each scalp area is irradiated with laser at a preset focal length, thereby ensuring that the laser irradiated on the scalp area reaches a preset intensity and improving the treatment effect. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A diagram illustrating the usage state of a laser positioning auxiliary device provided in an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of a slider assembly installed on an arc-shaped track according to an embodiment of the present invention. Part of the sub-shell of the sliding shell is not shown in the figure.

[0018] Figure 3 This is a schematic diagram of the internal structure of the slider assembly provided in an embodiment of the present invention;

[0019] Figure 4 A schematic diagram of the internal structure of a laser emitting assembly without a pressure sensor, provided in an embodiment of the present invention.

[0020] Figure 5 This is a schematic diagram of the internal structure of a laser emitting assembly including a pressure sensor, provided in an embodiment of the present invention.

[0021] Figure 6 A schematic diagram of the laser scanning path provided in an embodiment of the present invention;

[0022] Figure 7 A flowchart of a pressure regulation method provided in an embodiment of the present invention.

[0023] Figure Labels

[0024] 1. Arc-shaped track; 10. Belt placement groove; 11. Sliding guide groove; 2. Slider assembly; 20. Drive gear; 21. Belt guide pulley; 22. Sliding housing; 23. Upper limit wheel; 24. Middle limit wheel; 25. Lower limit wheel; 26. Tensioning knob; 27. Tensioning slide plate; 28. Transmission belt; 29. ​​Sliding side plate; 3. Laser emitting assembly; 30. Laser emitting tube; 301. First sliding sleeve; 302. Second sliding sleeve; 31. Laser emitting end; 32. Positioning wheel; 33. Optical fiber; 34. Adjusting spring; 35. Clamping sleeve; 36. Adjusting stud; 37. Adjusting screw; 38. Sliding part; 39. Adjusting hook; 41. First driving component; 42. Second driving component; 43. Third driving component; 44. Fourth driving component; 5. Longitudinal lifting bracket; 6. Photoelectric limit switch; 7. Limit stop plate; 8. Pressure sensor. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] As one possible embodiment of the present invention, such as Figure 1 As shown, a laser positioning auxiliary device is provided, including: an arc track 1, a first driving component 41, a slider assembly 2, a second driving component 42, and a laser emitting assembly 3.

[0027] The first driving component 41 is connected to the arc-shaped track 1 and is used to drive the arc-shaped track 1 to swing around a first axis. The first axis is the line connecting the two ends of the arc-shaped track 1. The slider assembly 2 is slidably disposed on the arc-shaped track 1. The second driving component 42 is connected to the slider assembly 2 and is used to drive the slider assembly 2 to move on the arc-shaped track 1. Specifically, in this embodiment, the first driving component 41, the second driving component 42, the third driving component 43, and the fourth driving component 44 are all motors, which can be stepper motors or servo motors.

[0028] In this embodiment, the swing direction of the arc-shaped track 1 is actually along the front-back direction of the human head, such as... Figure 1 As shown in the Y-axis direction, the sliding direction of slider assembly 2 is actually along the left-right direction of the human head, such as... Figure 1 The X-axis and Y-axis directions shown are perpendicular to each other. This allows the laser emitting component 3 on the slider assembly 2 to reach any part of the user's scalp.

[0029] Specifically, in this embodiment, the arc-shaped track 1 can be a semi-circular track. In addition, in order to enable the slider assembly 2 to slide better on the arc-shaped track 1, sliding guide grooves 11 are provided on both end faces of the arc-shaped track 1. At the same time, in order to better install the transmission belt 28, a belt placement groove 10 is also provided on the outer arc-shaped surface of the arc-shaped track 1.

[0030] This laser positioning auxiliary device also includes: a longitudinal lifting bracket 5, a photoelectric limit switch 6, and a limit stop 7.

[0031] The arc-shaped track 1 is rotatably mounted on the longitudinal lifting bracket 5. The longitudinal lifting bracket 5 can be a lifting bracket in the prior art, which is mainly used to adjust the position of the arc-shaped track 1 in the Z-axis direction.

[0032] A photoelectric limit switch 6 is mounted on the arc-shaped track 1, and limit baffles 7 are mounted on both sides of the sliding housing 22. By setting the photoelectric limit switch 6 and the limit baffles 7, the sliding position of the slider assembly 2 on the arc-shaped track 1 can be limited.

[0033] The laser emitting assembly 3 includes a laser emitting end 31, a clamping part, and a positioning wheel 32.

[0034] A clamping part is disposed on the slider assembly 2, and the laser emitting end 31 is slidably disposed relative to the clamping part. A positioning wheel 32 is disposed on the laser emitting end 31. The positioning wheel 32 contacts the scalp and is used to keep the distance between the laser emitting end 31 and the scalp area within a preset range.

[0035] In this embodiment, the laser emitting assembly 3 is used to deliver the therapeutic laser to the corresponding area of ​​the scalp. Specifically, the laser emitting end 31 delivers the therapeutic laser to the corresponding area of ​​the scalp, and the clamping part is used to fix it to the slider assembly 2. Since different scalp areas correspond to different head shapes, in order to allow the positioning wheel 32 to better fit the scalp in different areas, there needs to be mutual sliding between the laser emitting end 31 and the clamping part, that is, in Figure 1 The sliding direction is shown in the Z-axis direction. In addition, since the positioning wheel 32 is located at the laser emitting end 31, the distance between the laser emitting end 31 and the scalp area can be kept within a preset range by fixing the relative distance between the positioning wheel 32 and the laser emitting end 31. In this example, the preset range is usually the laser focal length range.

[0036] To achieve the above-mentioned functions of the laser emitting component 3, in this embodiment, the laser emitting component 3 can be configured as follows:

[0037] Specifically, such as Figure 4 As shown, the laser emitting assembly 3 includes: a laser emitting tube 30, a clamping sleeve 35, a third driving component 43, an adjusting spring 34, an adjusting hook 39, and an adjusting screw 37.

[0038] A clamping sleeve 35 is disposed on the outside of the sliding housing 22, and a laser emitting tube 30 is slidably inserted inside the clamping sleeve 35. An adjusting spring 34 is disposed between the laser emitting tube 30 and the clamping sleeve 35. The laser emitting tube 30 can be any tubular device used in the prior art for emitting therapeutic lasers. Alternatively, in this embodiment, the laser emitting tube 30 can also be a tubular structure for mounting an optical fiber 33. In actual use, the therapeutic laser is delivered to the scalp area via the optical fiber 33 by inserting the optical fiber 33 through the laser emitting tube 30.

[0039] The clamping sleeve 35 is connected to the laser emitting tube 30 by an adjusting spring 34, which can adjust the elastic force of the spring 34 to more gently adjust the relative movement between the laser emitting tube 30 and the clamping sleeve 35, so that the positioning wheel 32 can better fit the scalp during movement.

[0040] The third driving component 43 is fixedly connected to the end of the clamping sleeve 35 away from the laser emitting tube 30. The third driving component 43 is connected to the adjusting screw 37, and the sliding direction of the adjusting screw 37 is the same as the sliding direction of the laser emitting tube 30. The sliding part 38 of the adjusting screw 37 is connected to the adjusting hook 39, and the hook end of the adjusting hook 39 is hooked into the adjusting ring at the tail of the laser emitting tube 30, with an adjusting gap between the hook end and the adjusting ring.

[0041] Driven by the third drive component 43, the sliding part 38 of the adjusting screw can slide up and down along the axis of the clamping sleeve 35. Simultaneously, because the adjusting hook 39 is hooked into the adjusting ring at the tail of the laser emitting tube 30, the laser emitting tube 30 can be significantly retracted into the clamping sleeve 35 under the action of the sliding part 38. This function is mainly used to move the laser emitting end 31 away from the scalp area when the laser switches to another scanning path, facilitating repositioning at the new scanning path. Alternatively, after the laser scanning operation is completed, the clamping sleeve 35 can be directly connected to the laser emitting tube 30 using the adjusting hook 39. This avoids the clamping sleeve 35 and the laser emitting tube 30 being constantly connected via the adjusting spring 34, which could easily cause the adjusting spring 34 to fail and shorten its service life.

[0042] like Figure 2 and Figure 3 As shown, the slider assembly 2 includes: a drive gear 20, two belt guide pulleys 21, a transmission belt 28, and a sliding housing 22.

[0043] The sliding housing 22 is slidably clamped on the arc-shaped track 1. The drive gear 20 and two belt guide pulleys 21 are rotatably disposed inside the sliding housing 22. The rotation axes of the drive gear 20 and the two belt guide pulleys 21 are parallel to each other, and the two belt guide pulleys 21 are symmetrically arranged with respect to the drive gear 20. The second drive component 42 is connected to the drive gear 20.

[0044] The sliding housing 22 includes a first sliding sub-housing and a second sliding sub-housing arranged opposite to each other. The sliding housing 22 is mounted on the arc-shaped track 1, and the two sliding side plates 29 corresponding to the first sliding sub-housing and the second sliding sub-housing respectively cover the outside of the sliding guide groove 11.

[0045] The transmission belt 28 is disposed in the belt placement groove 10, and both ends of the transmission belt 28 are fixed to the two ends of the belt placement groove 10. A portion of the transmission belt 28 is sleeved on the transmission gear and two belt guide pulleys 21, and the transmission teeth on the transmission belt 28 mesh with the transmission gear.

[0046] The meshing design between the transmission gear and the transmission belt 28 allows the entire sliding housing 22 to move along the arc-shaped track 1. In this embodiment, the combination of transmission gear and transmission belt 28 reduces noise during the sliding process of the sliding housing 22, thereby minimizing the impact of noise on the user. Furthermore, the transmission belt 28 is more flexible and conforms better to the surface of the arc-shaped track 1, ensuring smooth movement of the sliding housing 22.

[0047] like Figure 2 and Figure 3As shown, the slider assembly 2 also includes a tensioning slide plate 27 and a tensioning knob 26.

[0048] The tension knob 26 is screwed onto the sliding housing 22, and the tensioning slide plate 27 is slidably disposed within the sliding housing 22. The end of the tension knob 26 is connected to the tensioning slide plate 27. The second drive component 42 is fixedly disposed on the tensioning slide plate 27. In actual use, the engagement between the transmission belt 28 and the transmission gear may become loose. Therefore, a tensioning mechanism is required to ensure the tight engagement between the transmission belt 28 and the drive gear 20.

[0049] like Figure 2 As shown, the slider assembly 2 also includes: multiple guide limit wheel sets.

[0050] Multiple guide and limit wheel sets are respectively mounted on the two sliding side plates 29 of the sliding housing 22. The two sliding side plates 29 are respectively sleeved parallel to each other on the outer sides of the two end faces of the arc-shaped track 1.

[0051] The guide limit wheel assembly includes: upper limit wheel 23, lower limit wheel 25 and middle limit wheel 24.

[0052] The upper limit wheel 23, the lower limit wheel 25 and the middle limit wheel 24 are all rotatably mounted on the sliding side plate 29. The rotation axes of the upper limit wheel 23 and the lower limit wheel 25 are perpendicular to the sliding side plate 29, and the rotation axis of the middle limit wheel 24 is parallel to the sliding side plate 29.

[0053] The upper limit wheel 23 and the lower limit wheel 25 are in contact with the upper and lower surfaces of the sliding guide groove 11, respectively. The middle limit wheel 24 is in contact with the bottom surface of the sliding guide groove 11.

[0054] To ensure that the slider assembly 2 slides on the arc track 1 in the preset track direction, the slider assembly 2 is also equipped with multiple guide limit wheel sets. Each guide limit wheel set includes an upper limit wheel 23, a lower limit wheel 25, and an intermediate limit wheel 24. By having the limit wheels contact the surfaces at different positions in the sliding guide groove 11, the vertical and horizontal movement of the slider assembly during the sliding process can be prevented, thereby ensuring the smoothness of the slider assembly 2 when sliding on the arc track 1, and also ensuring the accuracy of positioning.

[0055] In this embodiment, the arc-shaped track 1 swings around the first axis, the sliding component slides on the arc-shaped track 1, and the laser emitting end 31 moves relative to the clamping part. This forms a three-axis system that moves along mutually perpendicular X, Y, and Z axes, allowing the laser emitting end 31 to precisely reach any position on the scalp. Simultaneously, by providing a positioning wheel 32 on the laser emitting end 31, the distance between the laser emitting end 31 and the scalp is ensured to be a relatively fixed value at any position, i.e., the laser focal length. Therefore, the laser positioning auxiliary device of this invention can drive the laser emitting end 31 to any position on the scalp for treatment, and can ensure that each scalp area is irradiated with laser at a preset focal length, thereby ensuring that the laser irradiated on the scalp area reaches a preset intensity and improving the treatment effect.

[0056] As another possible embodiment of the present invention, such as Figure 5 As shown, the laser emitting component 3 can also have the following structural form:

[0057] Specifically, the laser emitting assembly 3 includes: a laser emitting tube 30, a first sliding sleeve 301, a second sliding sleeve 302, a fourth driving component 44, an adjusting spring 34, an adjusting stud 36, and a pressure sensor 8.

[0058] The first sliding sleeve 301 is clamped on the outside of the sliding housing 22, and the second sliding sleeve 302 slides through the first sliding sleeve 301. The laser emitting tube 30 slides through the second sliding sleeve 302. The adjusting spring 34 is disposed between the laser emitting tube 30 and the second sliding sleeve 302.

[0059] The adjusting stud 36 is connected to the fourth driving component 44, which is fixedly installed inside the first sliding sleeve 301. The adjusting stud 36 is screwed onto the second sliding sleeve 302.

[0060] In this embodiment, the coaxial sliding arrangement between the first sliding sleeve 301, the second sliding sleeve 302, and the laser emitting tube 30 allows the laser emitting end 31 to be adjusted along the Z-axis not only by adjusting the extension and retraction of the spring 34 itself, but also by coordinating the extension and retraction between the first sliding sleeve 301 and the second sliding sleeve 302 to further adjust the position of the laser emitting end 31 along the Z-axis. Ultimately, this gives the laser emitting end 31 a wider range of adjustment capabilities along the Z-axis, making it better suited for laser scanning operations for different users.

[0061] The pressure sensor 8 is located between the adjusting spring 34 and the laser emitting tube 30, or between the adjusting spring 34 and the second sliding sleeve 302, and is used to obtain the pressure value of the positioning wheel 32 on the scalp.

[0062] In this embodiment, the pressure value of the scanning position fed back by the pressure sensor 8 can guide the doctor to adjust the position of the laser emitting end 31 on the Z-axis in a timely manner, so as to avoid the positioning wheel 32 applying too much pressure to the user's scalp during the laser scanning operation, thereby causing discomfort to the user.

[0063] To enable more automated and timely adjustment of the pressure of the positioning wheel 32 on the user's scalp, this embodiment of the laser positioning assistance device also includes a controller. The controller is communicatively connected to the first drive component 41, the second drive component 42, the third drive component 43, the fourth drive component 44, and the pressure sensor 8. Thus, the controller can acquire signals returned from each component or perform corresponding action control on each component.

[0064] In a standard laser scanning treatment, after identifying the scalp area to be treated, a laser scanning path is pre-set to ensure the laser spot completely covers the area. This can be achieved using an S-shaped scanning path or multiple parallel scanning paths to fully cover the treatment area. The laser then proceeds in a step-by-step manner, sequentially reaching each scanning point along the path to complete the treatment. Figure 6 As shown, taking a rectangular laser spot as an example, the distance between two adjacent scanning points can be the width of the rectangular spot, thus ensuring that there are no missed scanning areas between two adjacent scanning points. Based on this laser scanning operation mode, the controller can control the fourth drive component in the following steps to ensure that the pressure of the positioning wheel 32 on the scalp is within a suitable range during the laser scanning process, thereby avoiding user discomfort.

[0065] Specifically, such as Figure 7 As shown, the controller is used to perform the following steps:

[0066] S100: If the scan identifier is the first scan identifier, then each time a new scan point is reached, the position information and scan pressure value corresponding to the current scan point are generated based on the information of the first drive component 41, the second drive component 42, the fourth drive component 44 and the pressure sensor 8.

[0067] The first scan identifier can be the identifier corresponding to a single scan when the laser performs only one scan along the predicted scan path, or the identifier corresponding to the first scan when the laser performs multiple scans along the predicted scan path.

[0068] Based on the position information returned by the first driving component 41, the second driving component 42, and the fourth driving component 44, the specific coordinates of the second sliding sleeve with respect to the X, Y, and Z axes can be generated. Simultaneously, the pressure exerted by the positioning wheel 32 on the scalp in this position can be determined from the pressure sensor 8. Therefore, throughout the entire scanning process, position and pressure information for each scanning point can be generated.

[0069] S200: If the scanning pressure value A corresponding to the current scanning point is... i If the pressure value is greater than the first preset pressure threshold, then obtain the scanning pressure value A corresponding to the previous scanning point adjacent to the current scanning point. i-1 .

[0070] The first preset pressure threshold can be determined based on the size of the positioning roller 32 and the sensitivity of the corresponding group to scalp pressure. Typically, this pressure threshold is the pressure value of the positioning roller 32 at which the user first feels discomfort. This step is usually performed when a new scanning point is reached. By setting the first pressure threshold, it is possible to more accurately determine whether the current scanning point is likely to cause user discomfort, and to promptly initiate subsequent judgment and adjustment steps.

[0071] S300: If A i -A i-1 If the value is >0, then the fourth drive component 44 drives the adjusting stud 36 to rotate, causing the second sliding sleeve 302 to move away from the scalp.

[0072] During scanning, if the head shape corresponding to the scanning path is an outward-protruding shape, the pressure value at the current scanning point will be greater than the pressure value at the adjacent previous point. Therefore, if A... i -A i-1 If the value is >0, the scanning area corresponding to the current scanning path can be determined, showing a tendency for the head shape to bulge outwards. Therefore, the fourth drive component 44 should be controlled to drive the second sliding sleeve 302 to move away from the scalp, so as to reduce the pressure of the positioning wheel 32 on the scalp in a timely manner.

[0073] S400: During the operation of the fourth drive component 44, the current scanning pressure value is continuously acquired through the pressure sensor 8.

[0074] In this step, by setting a smaller acquisition interval, the current scanning pressure value at this position can be continuously acquired during the operation of the fourth driving component 44.

[0075] S500: If the current scanning pressure value is less than the second preset pressure threshold, the fourth driving component 44 is stopped, and the position information and scanning pressure value obtained when the fourth driving component 44 stops are updated to the position information and scanning pressure value corresponding to the current scanning point, and the current scanning point is marked as an ascending point. The second preset pressure threshold is less than the first preset pressure threshold.

[0076] This embodiment describes a pressure adjustment method for the initial scan of a work scenario. In this scenario, since the scanning pressure value for each scanning point cannot be known in advance, if it is determined that the pressure value at a certain scanning point may cause discomfort to the user, it is necessary to promptly adjust the pressure using A. i -A i-1 >0, to further determine whether the current scanning path interval is the head-shaped convex interval, and timely control the fourth drive component 44 to adjust the pressure of the positioning wheel 32, thereby reducing the duration of pressure values ​​that cause discomfort to the user during the entire scanning process.

[0077] In another possible embodiment of the present invention, the controller is also configured to perform the following steps:

[0078] S110: If the scan marker is a rescan marker, then obtain the maximum scan point height information Hmax and the minimum scan point height information Hmin corresponding to the decompression point sequence from the generated scan point record. The decompression point sequence includes at least two consecutive rising points and the scan point preceding the consecutive rising points. In this step, the scan point height information can be the position of the second sliding sleeve 302 on the Z-axis.

[0079] The rescan marker can be the marker corresponding to non-first scans during multiple scans of the laser along the predicted scan path. Since the magnitude and type of pressure value corresponding to each laser scan point can be known after the first scan, the sequence of decompression points can be obtained from the entire scan path.

[0080] Taking a laser scanning path comprising 10 scanning points as an example, the first to third scanning points are normal points, the fourth and fifth scanning points are rising points, the sixth to eighth scanning points are normal points, and the ninth and tenth scanning points are rising points. The decompression point sequence consists of the point sequence formed by the third to fifth scanning points and the point sequence formed by the eighth to tenth scanning points.

[0081] Because the outward convexity trend of the head shape is continuous, the outward convexity often appears at points before the rising points. Therefore, the decompression point sequence in this step includes not only the continuous rising points but also a normal point before the continuous rising points. This allows us to encompass as much of the entire range with the outward convexity trend of the head shape as possible.

[0082] S210: Based on Hmax and Hmin, generate the decompression rate K for the corresponding scan path interval of the decompression point sequence. K satisfies the following condition:

[0083] K = (Hmax - Hmin) / [(n-1) × L]. Where n is the total number of scan points in the decompression point sequence, and L is the distance between two adjacent scan points.

[0084] S310: When the laser moves in the scanning path interval corresponding to the decompression point sequence, control the fourth driving component 44 to drive the second sliding sleeve 302 to move away from the scalp according to K.

[0085] In the previous embodiment, as the current scanning point moves to the next scanning point, the position of the second sliding sleeve remains unchanged. If the scalp has a tendency to bulge outward during the movement, the pressure of the positioning wheel 32 on the scalp will gradually increase, which may cause discomfort to the user during the scanning movement.

[0086] In S210, the pressure reduction ratio K is generated by the height difference of the head-shaped convex area corresponding to the entire pressure reduction point sequence and the scanning path length. Then, during the second scan, the second sliding sleeve 302 can be controlled to slowly rise in the scanning interval to ensure that the pressure value is always in a relatively stable range in the scanning interval, and further avoid discomfort to the user during the scanning movement.

[0087] Furthermore, although the steps of the method in this disclosure are described in a specific order in the accompanying drawings, this does not require or imply that the steps must be performed in that specific order, or that all the steps shown must be performed to achieve the desired result. Additional or alternative steps may be omitted, multiple steps may be combined into one step, and / or a step may be broken down into multiple steps.

[0088] From the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein can be implemented by software or by combining software with necessary hardware. Therefore, the technical solutions according to the embodiments of this disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, external hard drive, etc.) or on a network, including several instructions to cause a computing device (such as a personal computer, server, mobile terminal, or network device, etc.) to execute the methods according to the embodiments of this disclosure.

[0089] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A laser positioning aid, characterized in that The application relates to an arc-shaped track, a first driving component, a sliding block assembly, a second driving component and a laser emission assembly. The first driving component is connected with the arc-shaped track and used for driving the arc-shaped track to swing around a first axis; the first axis is a connecting line between two ends of the arc-shaped track. The sliding block assembly is slidably arranged on the arc-shaped track; the second driving component is connected with the sliding block assembly and used for driving the sliding block assembly to move on the arc-shaped track. The laser emission assembly comprises a laser emission end, a clamping part and a positioning wheel. The sliding block assembly comprises a driving gear, two belt guide wheels, a transmission belt and a sliding shell. The laser emission assembly comprises a laser emission tube, a first sliding sleeve, a second sliding sleeve, a fourth driving component, an adjusting spring, an adjusting stud and a pressure sensor. The controller is connected with the first driving component, the second driving component, the fourth driving component and the pressure sensor in communication respectively; the controller is used for executing the following steps: If the scanning identification is a first scanning identification, then when a new scanning point is reached, position information corresponding to the current scanning point and a scanning pressure value are generated according to information of the first driving component, the second driving component, the fourth driving component and the pressure sensor. During the action of the fourth driving component, the current scanning pressure value is continuously acquired by the pressure sensor. If the current scanning pressure value is smaller than a second preset pressure threshold, then the fourth driving component is controlled to stop, and position information and the scanning pressure value acquired when the fourth driving component stops are updated as the position information and the scanning pressure value corresponding to the current scanning point, and the current scanning point is marked as an ascending point; the second preset pressure threshold is smaller than the first preset pressure threshold. If the scan pressure value A corresponding to the current scan point position is greater than the first preset pressure threshold, a scan pressure value A corresponding to a previous scan point position adjacent to the current scan point position is obtained i If the scan pressure value A corresponding to the current scan point position is greater than the first preset pressure threshold, a scan pressure value A corresponding to a previous scan point position adjacent to the current scan point position is obtained i-1 ; If A i - A i-1 > 0, then control the fourth driving component to drive the adjusting stud to rotate, and drive the second sliding sleeve to move away from the scalp. The position information comprises scanning point height information generated by the fourth driving component, The controller is further used for executing the following steps: If the scanning identification is a second scanning identification, then from the generated scanning point record, maximum scanning point height information Hmax and minimum scanning point height information Hmin corresponding to a decompression point sequence are acquired; the decompression point sequence comprises at least two continuous ascending points and a scanning point before the continuous ascending points; According to Hmax and Hmin, a decompression rate K of a scanning path interval corresponding to the decompression point sequence is generated; K satisfies the following condition: K= (Hmax-Hmin) / [(n-1)*L], wherein n is the total number of scanning points in the decompression point sequence, and L is the distance between two adjacent scanning points; When the laser moves in the scanning path interval corresponding to the decompression point sequence, the fourth driving component is controlled to drive the second sliding sleeve to move away from the scalp according to K. Both sides of the arc-shaped track are provided with sliding guide grooves; the sliding block assembly further comprises a plurality of guide limiting wheel groups. The plurality of guide limiting wheel groups are arranged on two sliding side plates of the sliding shell; the two sliding side plates are arranged outside the two sides of the arc-shaped track in parallel.

2. A laser positioning aid according to claim 1, wherein, The guide limiting wheel group comprises an upper limiting wheel, a lower limiting wheel and an intermediate limiting wheel. ​ ​ The upper limit wheel, the lower limit wheel and the intermediate limit wheel are rotationally arranged on the sliding side plate, the rotation axes of the upper limit wheel and the lower limit wheel are perpendicular to the sliding side plate, and the rotation axis of the intermediate limit wheel is parallel to the sliding side plate; The upper limit wheel and the lower limit wheel are respectively in contact with the upper surface and the lower surface of the sliding guide groove, and the intermediate limit wheel is in contact with the bottom surface of the sliding guide groove.

3. A laser positioning aid according to claim 1, wherein, The slider assembly further comprises a tensioning sliding plate and a tensioning knob; The tensioning knob is rotationally arranged on the sliding shell, the tensioning sliding plate is slidingly arranged in the sliding shell, and the end of the tensioning knob is connected with the tensioning sliding plate; The second driving component is fixedly arranged on the tensioning sliding plate.

4. The laser positioning auxiliary device according to claim 1, characterized in that, A clamping part is arranged on the slider assembly, the laser emitting end is slidingly arranged opposite to the clamping part, and a positioning wheel is arranged on the laser emitting end; the positioning wheel is in contact with the scalp, and is used for keeping the distance between the laser emitting end and the scalp area in a preset interval; The sliding shell is slidingly clamped on the arc-shaped track, the driving gear and the two belt guide wheels are rotationally arranged in the sliding shell, the rotation axes of the driving gear and the two belt guide wheels are parallel to each other, and the two belt guide wheels are symmetrically arranged relative to the driving gear; the second driving component is connected with the driving gear; An outer arc-shaped surface of the arc-shaped track is provided with a belt placing groove, a transmission belt is arranged in the belt placing groove, and both ends of the transmission belt are fixed to both ends of the belt placing groove; a part of the transmission belt is sleeved on the transmission gear and the two belt guide wheels, and the transmission teeth on the transmission belt are in mesh with the transmission gear; The first sliding sleeve is clamped on the outside of the sliding shell, the second sliding sleeve is slidingly arranged in the first sliding sleeve, and the laser emitting tube is slidingly arranged in the second sliding sleeve; The adjusting spring is arranged between the laser emitting tube and the second sliding sleeve; The adjusting stud is connected with the fourth driving component, the fourth driving component is fixedly arranged in the first sliding sleeve, and the adjusting stud is rotationally arranged on the second sliding sleeve; the fourth driving component is a motor; The pressure sensor is arranged between the adjusting spring and the laser emitting tube, or between the adjusting spring and the second sliding sleeve, and is used for acquiring the pressure value of the positioning wheel on the scalp.

5. The laser positioning aid of claim 1, wherein, Further comprising: A longitudinal lifting support; The arc-shaped track is rotationally arranged on the longitudinal lifting support.

6. A laser positioning aid according to claim 1, wherein, Further comprising: A photoelectric limit switch and a limit stopper; The photoelectric limit switch is arranged on the arc-shaped track, and the limit stopper is arranged on both sides of the sliding shell.

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