Laser treatment handle, laser treatment apparatus, and laser treatment method

Abstract

Disclosed are a laser treatment handle, a laser treatment apparatus, and a laser treatment method, which relate to the technical field of laser treatment, wherein the laser treatment handle comprises: a housing, a cavity being formed in the housing, and an optical assembly, the optical assembly being arranged in the cavity, and the optical assembly comprising an adjustable beam deflector and a focusing lens, wherein the adjustable beam deflector is capable of performing angle deflection in a first direction to form a column of laser points in the first direction by means of focusing of the focusing lens; a motion detection device, configured for collecting displacement information of an exit end on the skin surface; and a controller, configured for controlling the adjustable beam deflector to deflect, so as to output a first column of light spots, and for turning off a laser device. When the displacement information meets a preset displacement value, the controller turns on the laser device and controls the adjustable beam deflector to deflect, so as to output a second column of light spots.

Description

Laser treatment handle, laser treatment instrument and laser treatment method

[0001] Related applications

[0002] The present application claims priority to Chinese Patent Application No. 202410861462.6, filed on June 28, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of medical devices, in particular to a laser treatment handle. BACKGROUND

[0004] With the rapid development of laser technology, more and more laser technologies are applied in the field of medical and cosmetic treatment, and the treatment effect of laser on the skin has become the focus of many medical and cosmetic fields. Dot laser treatment mainly passes a light through a deflectable galvanometer, so that the laser is focused on multiple points on the skin in sequence to form a one-dimensional array; at the same time, the staff moves the laser treatment handle, and after moving a distance, controls the laser treatment handle to work again to generate a one-dimensional array of laser focusing points, so that multiple one-dimensional arrays of laser beams form a two-dimensional laser array treatment surface on the skin to treat the skin.

[0005] However, when the staff moves the laser treatment handle by hand, it is difficult to control the moving distance, so that the two-dimensional laser array formed is not uniform, and even the laser treatment handle is turned on again without moving the handle, which causes repeated irradiation, resulting in uneven treatment. SUMMARY

[0006] The main purpose of the present application is to provide a laser treatment handle, which aims to solve the technical problem that the laser treatment handle is prone to repeated irradiation, resulting in uneven treatment.

[0007] To achieve the above-mentioned purpose, the present application provides a laser treatment handle, which comprises:

[0008] a housing, the housing is formed with a cavity extending along its axial direction for laser propagation, and an incident end and an exit end located at both ends of the cavity; and

[0009] an optical assembly, the optical assembly is arranged in the cavity, the optical assembly comprises an adjustable beam deflector and a focusing lens; the collimated light beam enters from the incident end, irradiates on the adjustable beam deflector, and forms a light spot after deflection and focusing by the focusing lens;

[0010] a motion detection device for collecting displacement information of the movement of the exit end on the skin surface;

[0011] A controller is configured to control the adjustable beam deflector to deflect to output a first column of light spots and turn off the laser; when the displacement information meets a preset displacement value, the controller turns on the laser and controls the adjustable beam deflector to deflect to output a second column of light spots.

[0012] In an embodiment, the motion detection device comprises:

[0013] A roller is arranged at the exit end.

[0014] A displacement sensor is in communication connection with the controller.

[0015] The displacement sensor is configured to detect the number of rotations of the roller.

[0016] In an embodiment, the number of rollers is at least two, and each roller is arranged at two sides of the exit end.

[0017] In an embodiment, the displacement sensor comprises a magnetic encoder disk and a magnetic encoder reader.

[0018] The magnetic encoder disk is fixed on the roller, and the magnetic encoder reader is fixed on the housing and corresponds to the magnetic encoder disk.

[0019] In an embodiment, the adjustable beam deflector comprises:

[0020] A motor has an output shaft.

[0021] A galvanometer is connected to the output shaft.

[0022] The controller is in electrical connection with the motor.

[0023] In an embodiment, the laser treatment handle comprises:

[0024] A reminder device is in electrical connection with the controller; when the laser is turned on, the controller controls the reminder device to send a reminder signal.

[0025] In addition, to achieve the above object, the present application further provides a laser treatment method, which comprises the following steps:

[0026] Providing a laser focused on a first treatment area;

[0027] Controlling the adjustable beam deflector to deflect to output a first column of light spots and turn off the laser;

[0028] Obtaining displacement information collected by the motion detection device;

[0029] determine whether the displacement information focuses the laser on a second treatment area;

[0030] If yes, turn on the laser and control the adjustable beam deflector to deflect to output a second column of light spots.

[0031] In an embodiment, the motion detection device is multiple, and the step of determining whether the displacement information focuses the laser on a second treatment area comprises:

[0032] Obtain multiple displacement information and calculate the average of the multiple displacement information;

[0033] Determine whether the average focuses the laser on a second treatment area.

[0034] In addition, to achieve the above-mentioned purpose, the application also provides a laser treatment instrument, which comprises the laser treatment handle as claimed in any one of the above.

[0035] The one or more technical solutions provided by the application have at least the following technical effects: the motion detection device can control the adjustable beam deflector to deflect in the first direction according to the laser scanning instruction, so that the collimated light beam passes through the focusing lens to form a column of laser spots in the first direction. By providing a motion mechanism at the exit end of the shell, the shell can be translated along the second direction on the skin surface to generate a motion displacement. When the motion displacement reaches a preset displacement, the motion detection device controls the adjustable beam deflector to pass through the focusing lens to form a column of laser spots in the first direction according to the laser scanning instruction. Regardless of the speed of the shell during treatment, a two-dimensional laser spot array with uniform density can be obtained, avoiding repeated irradiation of laser spots and improving the uniformity of laser treatment. BRIEF DESCRIPTION OF DRAWINGS

[0036] The drawings incorporated into the specification and forming a part thereof, illustrate embodiments consistent with the present application and, together with the specification, serve to explain the principles of the application.

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0038] Fig. 1 is a structural schematic diagram of an embodiment of the laser treatment handle provided by the present application;

[0039] Fig. 2 is a structural schematic diagram of another embodiment of the laser treatment handle provided by the present application;

[0040] Fig. 3 is a sectional view along A-A in Fig. 2;

[0041] Fig. 4 is a bottom view of the laser treatment handle provided by the present application;

[0042] Fig. 5 is a schematic view of the laser treatment handle provided by the present application forming a column of laser points;

[0043] Fig. 6 is a schematic view of the laser treatment handle provided by the present application forming another column of laser points;

[0044] Fig. 7 is a schematic view of the laser treatment handle provided by the present application forming a laser point array;

[0045] Fig. 8 is a structural schematic view of a dynamic focusing motion mechanism of the laser treatment handle provided by an embodiment of the present application;

[0046] Fig. 9 is a method flow chart of an embodiment of the laser treatment method of the present application;

[0047] Fig. 10 is a method flow chart of another embodiment of the laser treatment method of the present application;

[0048] Fig. 11 is a system block diagram of an embodiment of the laser treatment handle of the present application.

[0049] Brief Description of the Drawings: 1, housing; 11, cavity; 12, incident end; 13, exit end; 2, optical assembly; 21, adjustable beam deflector; 211, motor; 212, galvanometer; 22, focusing lens; 3, motion detection device; 31, roller; 32, displacement sensor; 33, counter; 4, controller; 5, reminder device; 6, dynamic focusing motion mechanism; 61, driving assembly; 62, angle detection sensor; 611, lead screw; 612, sliding block; 613, stepper motor.

[0050] The purposes, functional features and advantages of the present application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0051] It should be understood that the specific embodiments described herein are merely intended to explain the technical solutions of the present application, and are not intended to limit the present application.

[0052] In order to better understand the technical solutions of the present application, the following will be described in detail in conjunction with the accompanying drawings and specific embodiments.

[0053] Referring to Figs. 1 to 6, the present application proposes a laser treatment handle, which comprises a housing 1, an optical assembly 2, a motion detection device 3 and a controller 4.

[0054] The shell 1 is formed with a cavity 11 for laser propagation extending along the axial direction, and an incident end 12 and an exit end 13 located at both ends of the cavity 11, and the optical assembly 2 is arranged in the cavity 11. Specifically, the optical assembly 2 includes an adjustable beam deflector 21 and a focusing lens 22. The collimated laser beam enters from the incident end 12, irradiates on the adjustable beam deflector 21, and after deflection, forms a spot through the focusing of the focusing lens 22. The adjustable beam deflector 21 can be angularly deflected in a first direction to form a column of laser spots in the first direction through the focusing of the focusing lens 22.

[0055] The motion detection device 3 is used to collect the displacement information of the exit end 13 on the skin surface, and the motion detection device 3 is in communication connection with the controller 4. The displacement information collected by the motion detection device 3 is sent to the controller 4, and the controller 4 turns on the laser according to the displacement information. Specifically, the controller stores the interval of the laser treatment array set by the user, which is the above-mentioned displacement value, and the controller 4 judges whether the displacement information exceeds the displacement value. If it exceeds, the laser and the optical assembly 2 are controlled to work, so that the adjustable beam deflector 21 forms a column of laser spots in the first direction through the focusing of the focusing lens 22.

[0056] In some embodiments, referring to FIG. 11, the motion detection device 3 includes:

[0057] A roller 31 is arranged on the exit end 13.

[0058] A displacement sensor 32 is in communication connection with the controller 4.

[0059] The displacement sensor 32 is used to detect the number of rotations of the roller 31.

[0060] In some embodiments, the number of rollers 31 is at least two, and each is arranged on the two sides of the exit end 13.

[0061] In some embodiments, referring to FIG. 6, the displacement sensor 32 includes a magnetic encoder disc and a magnetic encoder reader.

[0062] The magnetic encoder disc is fixed on the roller, and the magnetic encoder reader is fixed on the shell 1 and corresponds to the magnetic encoder disc.

[0063] In this embodiment, when the user uses the laser treatment handle, the exit end 13 is directed to the skin, and the laser treatment handle is moved on the skin, at this time the roller 31 is pressed against the skin, and as the laser treatment handle moves, the roller 31 rotates and performs self-rotation; correspondingly, the magnetic encoder disk on the roller 31 rotates synchronously, and the magnetic encoder reader reads the rotation information of the magnetic encoder disk to generate the number of rotation circles, which is sent to the controller 4, and the controller 4 calculates the displacement information of the laser treatment handle according to the number of rotation circles and the outer diameter of the roller 31. When there are multiple rollers 31, the outer diameters of the multiple rollers are the same, and the number of corresponding magnetic encoder disks and corresponding magnetic encoder readers is also multiple, and the controller calculates the number of rotation circles of each roller to obtain the average number of rotation circles, and calculates the displacement information according to the average number of rotation circles. Multiple rollers 31 are arranged on both sides of the exit end 13 to make the movement more balanced. In order to better rotate the roller 31 on the skin, the side of the roller 31 is provided with a material that increases friction, such as rubber.

[0064] Referring to FIG. 6, in an embodiment, the speed of rotation of the roller 31 can be detected by the magnetic encoder disk and the magnetic encoder reader, so as to detect the sliding speed of the exit end of the handle, and then obtain the sliding displacement of the exit end.

[0065] Specifically, the sliding speed V of the exit end is calculated according to the formula: V = (V1 + V2) / 2

[0066] The sliding displacement of each treatment is the integral of the sliding speed V of the exit end: ΔS = ∑V·ΔT

[0067] In this embodiment, the angle of rotation of the roller 31 is detected by the magnetic encoder disk and the magnetic encoder reader, so as to obtain the distance of the laser handle moving in the second direction. Whether the laser treatment handle moves fast or slow during treatment, a two-dimensional laser dot array with uniform density can be obtained, and finally a dot array area with the width of the end window width and the length of the sliding distance is formed, thereby improving the uniformity of laser treatment.

[0068] Referring to FIGS. 1 to 3, in an embodiment, the adjustable beam deflector 21 comprises a motor 211 and a galvanometer 212, the motor 211 has an output shaft, and the galvanometer 212 is connected with the output shaft.

[0069] The controller 4 is electrically connected with the motor 211, and is used to drive the motor 211 to work to change the angle of the galvanometer 212, and the controller 4 is also used to turn on or turn off the laser; when a column of light spots needs to be output on the skin, the controller 4 controls the laser to be turned on, and at the same time controls the motor 211 to rotate to a series of angles, so that the laser emitted by the laser is incident on the galvanometer 212 at different angles, and then passes through the focusing lens 22 to form a column of light spots.

[0070] Referring to FIG. 5, in the embodiment, the galvanometer 212 is a one-dimensional galvanometer 212, and the relationship between the deflection angle of the galvanometer 212 and the dot matrix coordinates is: x = 0 y = d tan θ

[0071] By adjusting the size of the deflection angle θ of the galvanometer 212, a row of uniform laser spots can be formed in the treatment window.

[0072] Referring to FIG. 11, in an embodiment, the laser treatment handle comprises a reminding device 5, which is electrically connected to the controller 4; when the laser is turned on, the controller 4 controls the reminding device 5 to send a reminding signal.

[0073] When the laser treatment handle moves to a preset displacement on the skin, the controller 4 turns on the laser, so that the laser treatment handle inputs a row of light spots, and the controller 4 sends a reminding signal to the reminding device 5, which is used to send first reminding information to remind the user that the laser has worked again to output light spots at this time after receiving the first reminding control signal sent by the controller 4. Specifically, the reminding device 5 can include an LED lamp, and the first reminding control signal is to control the LED lamp to be turned on. In addition, although the laser emitted by the laser can have a therapeutic effect on the skin, the laser itself emits laser that is harmful to the human body, and many lasers are invisible light. Sometimes, the user does not know whether the laser has been emitted. Therefore, the reminding device 5 is arranged, and the reminding device 5 is controlled by the controller 4. When the laser is turned on, the controller 4 sends an opening signal to the reminding device 5, so that the reminding device 5 works to send a reminding signal to remind the user that the laser is turned on.

[0074] Referring to FIG. 11, in an embodiment, the motion detection device 3 further comprises:

[0075] A counter 33 is arranged to count a row of laser spots formed by the adjustable beam deflector 21 in the first direction after passing through the focusing lens 22 at the target position, and output a counting control signal when the number of the laser spots reaches a first threshold, so that the laser source receives the counting control signal to stop generating the collimated light beam.

[0076] In the embodiment, the counter 33 can count a row of laser spots formed by the adjustable beam deflector 21 in the first direction after passing through the focusing lens 22 at the target position, and output a counting control signal when the number of the laser spots reaches a first threshold, so that the laser source receives the counting control signal to stop generating the collimated light beam. This can prevent the formation of light spots in a row of laser spots at the end position, causing repeated irradiation.

[0077] In some alternative embodiments, in addition to the above-mentioned counter 33, a timer can also be used, and the adjustable beam deflector 21 deflects at fixed time intervals, so that a column of laser spots is formed in the first direction by focusing of the focusing lens 22. The time for forming a column of laser spots is timed by the timer, and when the timing time reaches a preset value, a timing control signal is output, and the laser source receives the timing control signal to stop generating the collimated light beam. The formation of a spot at the end position of a column of laser spots is prevented, and repeated irradiation is caused.

[0078] In some embodiments, the controller 4 can output a second reminder control signal when the counter 33 stops counting or the timer stops timing. The reminder device 5 outputs a second reminder information when receiving the second reminder control signal. After the user receives the second reminder information, the user starts to move the laser treatment handle, so that the adjustable beam deflector 21 forms a column of laser spots in the first direction by focusing of the focusing lens 22 at another target position.

[0079] Referring to FIG. 9, in addition, to achieve the above-mentioned purposes, the present application further provides a laser treatment method, which comprises the following steps:

[0080] S100, providing a laser focused on a first treatment area;

[0081] S200, controlling the adjustable beam deflector to deflect to output a first column of spots, and turning off the laser;

[0082] S300, acquiring displacement information collected by the motion detection device;

[0083] S400, judging whether the displacement information causes the laser to be focused on a second treatment area;

[0084] S500, if yes, turning on the laser and controlling the adjustable beam deflector to deflect to output a second column of spots.

[0085] In this embodiment, when the user holds the laser treatment handle to perform treatment on the skin, it is necessary to output the spot array on the skin. First, the exit end of the laser treatment handle is directly opposite the skin, and the motion detection device is pressed against the skin, specifically, the roller is pressed against the skin; then the switch is pressed, and after the controller 4 receives the instruction of the switch, the laser is turned on, and the laser outputs the spot on the first treatment area on the skin along the optical path, and at the same time the controller controls the adjustable beam deflector to rotate to output the first column of spots, and when the first column of spots is output, the controller controls the laser to be turned off; at the same time, the user controls the laser treatment handle to move on the skin, and when the laser treatment handle moves on the skin, the roller rotates, and the motion detection device calculates the number of rotations of the roller and then sends it to the controller 4, and the controller 4 calculates the displacement information, and when the controller 4 obtains the displacement information and focuses the laser on the second treatment area, the laser and the adjustable beam deflector are turned on again, so that the laser treatment handle outputs the second column of spots on the second treatment area on the skin. It should be noted that the first treatment area and the second treatment area point to different skin areas, and the second treatment area can be one or more. The adjustable beam deflector has a very fast adjustment speed, which is much greater than the moving distance of the laser treatment handle on the skin. When the number of rollers is multiple, the controller 4 obtains the displacement information corresponding to the multiple rollers, then calculates the average value of the multiple displacement information, and then compares the average value with the preset displacement value to determine whether to control the laser to work.

[0086] In this application, the motion detection device 3 can control the adjustable beam deflector 21 to angularly deflect in the first direction according to the laser scanning instruction, so that the collimated light beam forms a column of laser spots in the first direction through the focusing of the focusing lens 22. By providing a motion mechanism 3 at the exit end 13 of the shell 1, the shell 1 can be translated along the second direction on the skin surface to generate a motion displacement, and when the motion displacement reaches a preset displacement, the motion detection device 3 controls the adjustable beam deflector 21 to form a column of laser spots in the first direction through the focusing of the focusing lens 22 according to the laser scanning instruction. Regardless of how fast or slow the shell 1 moves during treatment, a two-dimensional laser spot array with uniform density can be obtained, avoiding repeated irradiation of laser spots and improving the uniformity of laser treatment.

[0087] Referring to FIGS. 3 and 10, in some embodiments, the motion detection device is multiple, and the step of S400, determining whether the displacement information focuses the laser on the second treatment area, comprises:

[0088] S410, obtaining multiple displacement information and calculating the average value of the multiple displacement information;

[0089] S420, determining whether the average value focuses the laser on the second treatment area.

[0090] In addition, to achieve the above object, the application further provides a laser treatment instrument comprising the laser treatment handle.

[0091] It should be understood that various parts of the present application can be realized by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0092] The above description is merely specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

[0093] The above description is merely specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A laser therapy handpiece, wherein, The laser therapy handpiece includes: A housing having a cavity extending along its axial direction for laser propagation, and an incident end and an exit end located at opposite ends of the cavity; and An optical component is disposed within the cavity. The optical component includes an adjustable beam deflector and a focusing lens. The collimated laser beam enters from the incident end and irradiates the adjustable beam deflector. After deflection, the beam is focused by the focusing lens to form a light spot. A motion detection device is used to collect displacement information of the emission end moving on the skin surface; The controller is used to control the deflection of the adjustable beam deflector to output a first column of light spots and to turn off the laser; when the displacement information meets a preset displacement value, the controller turns on the laser and controls the deflection of the adjustable beam deflector to output a second column of light spots.

2. The laser therapy handpiece as described in claim 1, wherein, The motion detection device includes: A roller is disposed at the discharge end; A displacement sensor, which is communicatively connected to the controller; The displacement sensor is used to detect the number of rotations of the roller.

3. The laser therapy handpiece as described in claim 2, wherein, The number of rollers is at least two, and they are respectively installed on both sides of the launching end.

4. The laser therapy handpiece as described in claim 2, wherein, The displacement sensor includes a magnetic encoder disk and a magnetic encoder reader head; The magnetic encoder disk is fixed on the roller, and the magnetic encoder reading head is fixed on the housing and corresponds to the magnetic encoder disk.

5. The laser treatment handpiece as described in claim 1, wherein, The adjustable beam deflector includes: An electric motor having an output shaft; A galvanometer, which is connected to the output shaft; The controller is electrically connected to the motor.

6. The laser therapy handpiece as described in claim 1, wherein, The laser therapy handpiece includes: The reminder device is electrically connected to the controller; when the laser is turned on, the controller controls the reminder device to emit a reminder signal.

7. The laser therapy handpiece as described in claim 1, wherein, The motion detection device further includes: A counter is used to count a series of laser points formed in a first direction by the adjustable beam deflector after being focused by the focusing lens at the target position. When the number of laser points reaches a first threshold, a counting control signal is output.

8. A laser treatment method, wherein, The laser treatment method is applied to the laser treatment handpiece according to any one of claims 1 to 7, and the laser treatment method includes the following steps: Provide a laser that is focused on the first treatment area; Control the adjustable beam deflector to output the first beam of light, and turn off the laser; Obtain the displacement information collected by the motion detection device; Determine whether the displacement information causes the laser to be focused on the second treatment area; If so, the laser is turned on and the adjustable beam deflector is controlled to deflect to output a second beam of light.

9. The laser treatment method according to claim 8, wherein, The motion detection device comprises multiple devices, and the step of determining whether the displacement information causes the laser to be focused on the second treatment area includes: Acquire multiple displacement information and calculate the average value of the multiple displacement information; Determine whether the average value causes the laser to be focused in the second treatment area.

10. A laser therapy device, wherein, The laser therapy device includes a laser therapy handpiece as described in any one of claims 1 to 7.

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