Laser hand tool and laser therapeutic instrument

Abstract

The utility model discloses a laser hand tool and a laser therapeutic instrument, and relates to the technical field of medical instruments, the laser hand tool comprises a fixed part and a movable part, the fixed part is provided with a light emitting surface, the movable part is provided with a lens, the movable part is rotatably connected with the fixed part, and one of the fixed part and the movable part is provided with a detection part. The other one of the fixed part and the movable part is provided with a detection groove, the detection part is provided with a detection surface, and the detection groove is provided with a reflection surface opposite to the detection surface; the plane where the reflecting surface is located and the plane where the detection surface is located form an included angle. According to the technical scheme provided by the utility model, the problem that an existing laser hand tool is relatively high in identification error proportion when identifying the distance between the light emitting surface and the lens is solved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a laser hand and a laser therapy device. Background Technology

[0002] In laser treatment, the laser handpiece, as a key component for laser energy transmission, ultimately delivers energy to the lesion tissue. To adapt to different lesion areas and types, the laser spot size and energy density need to be precisely adjusted to achieve a safer and more effective treatment.

[0003] The laser handpiece includes a fixed part and a moving part. The fixed part and the moving part are respectively provided with a light-emitting surface and a lens. The moving part can rotate relative to the fixed part and move in the axial direction, thereby adjusting the distance between the light-emitting surface and the lens and adjusting the size of the output light spot.

[0004] The laser handpiece also includes a structure for detecting the distance between the light surface and the lens. Specifically, it includes a signal ring and a reflective photoelectric switch. The signal ring and the reflective photoelectric switch are respectively located on the fixed part and the moving part. The signal ring has multiple signal slots at different positions. When the moving part rotates to a certain position relative to the fixed part, the reflective photoelectric switch illuminates the signal slot. The position corresponding to the signal slot is the position of the moving part of the handpiece. Based on the signal slot detected by the signal ring, the distance between the light surface and the lens can be determined.

[0005] However, when using a reflective photoelectric switch, it is difficult to accurately align the reflective photoelectric switch and the signal ring during assembly. The fixed and moving parts may also not be perfectly aligned during assembly. Therefore, assembly tolerance issues are inevitable during the assembly process, which can lead to inaccurate identification and a high rate of identification errors. Utility Model Content

[0006] The main purpose of this invention is to provide a laser handpiece and a laser therapy device, which aims to solve the problem that existing laser handpieces have a high rate of errors in recognizing the distance between the light surface and the lens.

[0007] To achieve the above objectives, this utility model proposes a laser handpiece, comprising: a fixing member having a light-emitting surface; and a moving member having a lens mounted on it, the moving member being rotatably connected to the fixing member; one of the fixing member and the moving member having a detection element, the other of the fixing member and the moving member having a detection groove, the detection element having a detection surface, and the detection groove having a reflective surface directly opposite the detection surface; wherein the plane containing the reflective surface forms an angle with the plane containing the detection surface.

[0008] In one embodiment, at least one of the reflecting surface and the detecting surface is arranged at an angle to the axial direction of the lens.

[0009] In one embodiment, the angle between the plane containing the reflective surface and the plane containing the detection surface is between 15 and 25 degrees.

[0010] In one embodiment, multiple detection slots are provided, and the multiple detection slots are spaced apart circumferentially. The detection element is provided corresponding to one detection slot. The detection surface is set at an angle to the axial direction of the lens, and the reflecting surface is set at an angle to the axial direction of the lens.

[0011] In one embodiment, multiple detection slots are provided, which are spaced apart along the axial direction, and at least two detection slots are staggered along the axial direction; multiple detection elements are provided, which are arranged in one-to-one correspondence with the detection slots; the detection surface is arranged parallel to the axial direction of the lens, and the reflecting surface is arranged at an angle to the axial direction of the lens.

[0012] In one embodiment, the inner wall of the detection groove is provided with a reflective layer.

[0013] In one embodiment, the surface roughness Ra of the inner wall of the detection groove is greater than 1 micrometer.

[0014] In one embodiment, the detection element is a reflective photoelectric switch, which includes an identification plate, a transmitter, and a receiver, wherein the transmitter and the receiver are electrically connected to the identification plate.

[0015] In one embodiment, the laser handpiece further includes a detection ring, which is fixedly connected to the other of the fixed member and the movable member, and the detection ring has the detection groove.

[0016] This utility model also proposes a laser therapy device, which includes a laser and a laser handpiece as described above.

[0017] Compared with the prior art, the laser handpiece and laser therapy device provided by this utility model have the following beneficial effects:

[0018] This invention provides a detection element and a detection slot on a fixed component and a moving component, respectively. The detection element has a detection surface, and the detection slot has a reflective surface. The plane containing the reflective surface is set at an angle to the plane containing the detection surface. This tilt angle allows the incident signal (such as incident light or ultrasound) to return in a specific direction, which can more effectively direct the incident signal back to the detection element, thereby improving the reflection efficiency and thus the receiving efficiency of the detection element. This design helps to compensate for the effects of assembly tolerances in the laser handpiece. Even if there are slight positional deviations during assembly, the angle between the two planes helps the incident signal to be better received by the detection element. The detection element can still accurately identify the position of the detection slot, reducing the decrease in reflection efficiency caused by assembly errors, improving the accuracy of identification, and enhancing the reliability of the equipment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram showing an embodiment of the detection element and detection ring of this utility model;

[0021] Figure 2 This is a front view of another embodiment of the detection element and detection ring of this utility model;

[0022] Figure 3 This is a side view of yet another embodiment of the detection element and detection ring of this utility model.

[0023] Explanation of icon numbers:

[0024] 10. Detection component; 11. Detection surface; 12. Reflective photoelectric switch; 121. Identification plate; 122. Transmitter; 123. Receiver; 20. Detection ring; 21. Detection groove; 211. Reflective surface.

[0025] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0028] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0029] Please refer to Figures 1 to 3 This utility model proposes a laser handpiece, which includes: a fixing member (not shown in the figure) having a light-emitting surface (not shown in the figure); and a moving member (not shown in the figure), the moving member having a lens (not shown in the figure) and being rotatably connected to the fixing member; one of the fixing member and the moving member has a detection element 10, and the other of the fixing member and the moving member has a detection groove 21, the detection element 10 having a detection surface 11, and the detection groove 21 having a reflective surface 211 facing the detection surface 11; wherein the plane of the reflective surface 211 is at an angle to the plane of the detection surface 11.

[0030] Specifically, the movable component is rotatably connected to the fixed component. The movable component can be sleeved on the outside of the fixed component or extended into the inside of the fixed component, using threaded connection or snap-fit, etc. The movable component rotates relative to the fixed component, which can adjust the distance between the lens and the light-emitting surface, thereby adjusting the size of the output light spot.

[0031] The detection component 10 can be a reflective photoelectric switch 12, an ultrasonic sensor, a laser rangefinder, etc.

[0032] A detection element 10 and a detection groove 21 are set between the fixed part and the moving part. During the rotation of the moving part, the detection element 10 detects the detection groove 21. The position of the detection groove 21 is the position of the rotating part of the hand tool, thereby determining the distance value between the lens and the light-emitting surface.

[0033] According to the law of reflection, the angle of incident light is equal to the angle of reflected light (i.e., angle of incidence = angle of reflection). When light shines on a plane, it is reflected according to this law. If the surface is tilted, the incident light will be reflected at a new angle. By setting the plane containing the reflecting surface 211 at an angle to the plane containing the detection surface 11, that is, by setting the two planes at an angle, the direction of the incident light can be controlled, and the incident light (in other embodiments, such as ultrasound) can be more effectively oriented and reflected back to the detection element 10, thereby improving the reflection efficiency. Therefore, this design helps to compensate for the effects of assembly tolerances of the components in the laser handpiece. Even if there are slight positional deviations during assembly, the angle between the two planes can help the incident signal be better received by the detection element 10, and the detection element 10 can still accurately identify the position of the detection slot 21, reducing the decrease in reflection efficiency caused by assembly errors, improving the accuracy of identification, and improving the reliability of the equipment.

[0034] The tilt angle can be selected according to actual needs, and is determined through careful calculation and testing to find the angle with the best reflection efficiency. The tilt angle ensures that the incident signal returns in a specific direction, rather than being scattered elsewhere. By directional reflection and reducing stray light, more incident signal is ensured to return to the receiver of the detector 10, reducing interference from background reflection and stray light.

[0035] This utility model's technical solution involves setting a detection element 10 and a detection groove 21 on a fixed component and a moving component, respectively. The detection element 10 has a detection surface 11, and the detection groove 21 has a reflective surface 211. The plane containing the reflective surface 211 is set at an angle to the plane containing the detection surface 11. This tilt angle allows the incident signal to return in a specific direction, which can more effectively directionally reflect the incident signal (such as incident light or ultrasound) back to the detection element 10, thereby improving the reflection efficiency and thus improving the receiving efficiency of the detection element 10. This design helps to compensate for the impact of assembly tolerances of various components in the laser handpiece. Even if there is a slight positional deviation during assembly, the angle between the two planes can help the incident signal be better received by the detection element 10. The detection element 10 can still accurately identify the position of the detection groove 21, reducing the decrease in reflection efficiency caused by assembly errors, improving the accuracy of identification, and improving the reliability of the equipment. Thus, the detection groove 21 can be accurately identified, and the distance between the lens and the light-emitting surface can be further determined based on the detection groove 21.

[0036] In an embodiment of this utility model, at least one of the reflecting surface 211 and the detection surface 11 is arranged at an angle to the axial direction of the lens.

[0037] like Figure 2 As shown, the detection surface 11 within the detection groove 21 is set at an angle to the axial direction of the lens. Simultaneously, the installation angle of the detection element 10 is further tilted, increasing the strength of the receiving end. Figure 2 and Figure 3 Two installation structures were designed for the two embodiments, and the structure of the detection slot 21 was optimized to improve the reflection efficiency and solve the problem of recognition accuracy.

[0038] In embodiments of this invention, the angle between the plane containing the reflective surface 211 and the plane containing the detection surface 11 ranges from 15 to 25 degrees. In a specific embodiment, the angle between the plane containing the reflective surface 211 and the plane containing the detection surface 11 is 20 degrees.

[0039] In an embodiment of this utility model, multiple detection slots 21 are provided, and the multiple detection slots 21 are spaced apart circumferentially. The detection element 10 is provided corresponding to one detection slot 21. The detection surface 11 is set at an angle to the axial direction of the lens, and the reflecting surface 211 is set at an angle to the axial direction of the lens.

[0040] It is worth noting that, such as Figure 2 Multiple detection slots 21 are spaced circumferentially along the fixed or moving component, while a single detection element 10 is used. The reflective surfaces 211 of the multiple detection slots 21 are all set at an angle to the axial direction of the lens, which optimizes the path of the incident signal and ensures that the incident signal returns to the receiving end of the detection element 10 more effectively. The angle between the detection surfaces 11 and the axial direction of the lens allows the detection element 10 to receive the reflected signal more effectively, thereby improving the sensitivity and response speed of the device.

[0041] In use, the moving part moves relative to the fixed part, and the multiple detection slots 21 move relative to the detection element 10. When the detection element 10 detects a certain detection slot 21, it can obtain the corresponding signal, determine the relative positional relationship between the fixed part and the moving part, and determine the distance from the lens to the light-emitting surface. Specifically, the distance from the lens to the light-emitting surface can be determined based on the different depths, tilt angles, and other characteristics among the multiple detection slots 21.

[0042] Due to the angle design of each detection slot 21, even if there are certain tolerances during the assembly process, the detection component 10 can still accurately identify the position of the detection slot 21. By identifying different detection slots 21, the rotation position of the moving component can be detected, and the distance between the lens and the light-emitting surface can be output. This compensates for assembly errors to a certain extent and maintains the high-precision recognition capability of the equipment.

[0043] In an embodiment of this utility model, multiple detection grooves 21 are provided, and the multiple detection grooves 21 are spaced apart along the axial direction, with at least two detection grooves 21 being staggered along the axial direction; multiple detection elements 10 are provided, and the detection elements 10 are arranged in a one-to-one correspondence with the detection grooves 21; the detection surface 11 is arranged parallel to the axial direction of the lens, and the reflecting surface 211 is arranged at an angle to the axial direction of the lens.

[0044] Specifically, such as Figure 3 Multiple detection slots 21 are spaced apart along the axial direction of the fixed or moving component, and the detection surface 11 is parallel to the axial direction of the lens. This ensures that the emitted light can directly illuminate the detection surface 11. Since the reflecting surface 211 of the detection slot 21 forms an angle with the axial direction of the lens, the intensity of the incident signal reflected from the detection slot 21 is enhanced, allowing the detection component 10 to receive a stronger reflected signal. Even if there are certain tolerances during assembly, as long as the reflection path remains effective, the detection component 10 can still accurately identify the position of the detection slot 21. Even slight changes in the incident signal can be accurately detected, improving recognition accuracy and reducing the possibility of misidentification.

[0045] The detection grooves 21 can be arranged in a staggered manner along the axial direction, and there can be two or more. The specific staggered arrangement method can be set according to the multiple distances to be detected.

[0046] like Figure 1 The four detection slots 21 are partially or completely staggered along the axial direction. Multiple detection elements 10 are arranged one-to-one with multiple detection slots 21. When the moving part rotates relative to the fixed part, the detection slots 21 and the detection elements 10 move relative to each other. Multiple detection elements 10 are used to detect the corresponding detection slots 21. Based on whether the multiple detection elements 10 detect the corresponding detection slots 21 (e.g., in the first position, the first detection element and the third detection element detect the corresponding first detection slot and the third detection slot, while the second detection element and the fourth detection element do not detect the corresponding detection slot), the corresponding signal is obtained, the relative positional relationship between the fixed part and the moving part is determined, and the distance from the lens to the light-emitting surface is determined.

[0047] In an embodiment of this utility model, the inner wall of the detection groove 21 is provided with a reflective layer (not shown in the figure).

[0048] In detail, setting a reflective layer means using a material that increases reflection. The reflective material can be a high-reflectivity metal (such as aluminum or silver), a multilayer dielectric film, or white reflective paint, etc. By setting a reflective layer on the inner wall of the detection groove 21, the intensity of the light reflected back from the detection groove 21 can be significantly enhanced, so that the detection element 10 can receive a stronger reflected signal. By reducing the influence of background reflection and stray light, a higher signal-to-noise ratio is obtained, false identification is reduced, and the recognition accuracy is improved.

[0049] In an embodiment of this invention, the surface roughness Ra of the inner wall of the detection groove 21 is greater than 1 micrometer.

[0050] It is worth noting that increasing the roughness of the inner wall of the detection groove 21, that is, applying different surface roughness treatments to the detection groove 21 and the non-detection groove 21, increases the difference in the recognition threshold. The rough surface of the inner wall of the detection groove 21 has many micron-level unevennesses. When light shines on such a surface, the light is dispersed and reflected in different directions by these unevennesses. Applying diffuse reflection to the detection groove 21 can make the light uniformly distributed inside the detection groove 21, thereby ensuring that light entering from different angles can be effectively reflected and returned to the receiving end of the detection element 10.

[0051] In an embodiment of this utility model, the detection element 10 is a reflective photoelectric switch 12, which includes an identification plate 121, a transmitter 122, and a receiver 123. The transmitter 122 and the receiver 123 are electrically connected to the identification plate 121.

[0052] Specifically, the detection element 10 is configured as a reflective photoelectric switch 12, which includes a transmitter 122 and a receiver 123. Both the transmitter 122 and the receiver 123 are connected to the identification plate 121. The transmitter 122 is used to emit light, and the receiver 123 is used to receive the reflected light and convert it into an electrical signal. When the detection slot 21 is present, the light emitted by the transmitter 122 shines on the reflective surface 211 in the detection slot 21 and is reflected back to the receiver 123 for identification.

[0053] In one embodiment, multiple detection slots 21 are provided, and an identification plate 121 is installed on each detection slot 21. As the moving part rotates, different positions can be identified by the identification plate 121, thereby obtaining a signal and outputting it to obtain light spots of different sizes. Figure 2 and Figure 3 By changing the mounting angle of the identification plate 121, the angles of the transmitter 122 and the receiver 123 can be adjusted simultaneously, ensuring that they form an ideal angle relative to the reflective surface 211 of the detection slot 21. The identification plate 121 can be installed in an appropriate position using a bracket or other fixing device. Since the transmitter 122 and the receiver 123 are both mounted on the same identification plate 121, their relative positions remain consistent, avoiding errors caused by individual adjustments. By adjusting the angle of the identification plate 121, the emitted light can be more effectively irradiated onto the reflective surface 211 of the detection slot 21, and the reflected light can be concentrated and returned to the receiver 123, thereby improving the reflection efficiency.

[0054] In an embodiment of this utility model, the laser handpiece further includes a detection ring 20, which is fixedly connected to the other of the fixed member and the moving member, and the detection ring 20 has the detection groove 21.

[0055] It is worth noting that the detection ring 20 can be fixed to a fixed part or a moving part. As an independent part, the detection ring 20 can be manufactured and tested separately, and then assembled with the fixed part or the moving part, which simplifies the overall assembly process.

[0056] By setting up a separate detection ring 20 with a detection groove 21, if the detection ring 20 or its detection groove 21 malfunctions, the entire detection ring 20 can be replaced directly without disassembling or repairing the entire laser handpiece, thus reducing maintenance costs and time. Furthermore, if improvements or upgrades to the equipment's functionality are needed, only the detection ring 20 needs to be replaced or modified; no changes to the entire laser handpiece are required.

[0057] In one embodiment, the movable component is sleeved outside the fixed component and threadedly connected to it. The threaded connection allows for fine adjustments to the position of the movable component, facilitating precise detection of the detection groove 21 by the detection component 10. Furthermore, the threaded connection provides strong mechanical locking force, effectively preventing displacement of the movable component due to vibration or impact during use, ensuring the long-term stability of the system. In addition, depending on the specific application requirements, the positions of the detection component 10 and the detection groove 21 can be flexibly adjusted by changing the screw depth of the threaded connection to adapt to different detection requirements.

[0058] This utility model also provides a laser therapy device (not shown in the figure), which includes a laser (not shown in the figure) and a laser handpiece. The laser emits energy to the laser handpiece, and the laser handpiece transmits the energy to the lesion tissue.

[0059] The specific laser handpiece is described in the above embodiments. Since the laser therapy device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here.

[0060] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the technical concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A laser handpiece characterized by, The laser hand tool comprises: a fixing member having an emitting surface; and a moving member provided with a lens, the moving member being rotationally connected to the fixing member; one of the fixing member and the moving member is provided with a detection member, the other of the fixing member and the moving member is provided with a detection groove, the detection member has a detection surface, and the detection groove has a reflection surface opposite to the detection surface; wherein the reflection surface is arranged at an angle with the detection surface.

2. The laser handpiece of claim 1, wherein, At least one of the reflection surface and the detection surface is arranged at an angle with the axial direction of the lens.

3. The laser handpiece of claim 1, wherein, The angle between the plane where the reflection surface is located and the plane where the detection surface is located ranges from 15 to 25 degrees.

4. The laser handpiece of claim 2, wherein, The detection groove is provided with a plurality of detection grooves, the plurality of detection grooves are arranged at intervals in the circumferential direction, the detection member corresponds to one of the detection grooves, the detection surface is arranged at an angle with the axial direction of the lens, and the reflection surface is arranged at an angle with the axial direction of the lens.

5. The laser handpiece of claim 2, wherein, The detection groove is provided with a plurality of detection grooves, the plurality of detection grooves are arranged at intervals in the axial direction, and at least two of the detection grooves are arranged at intervals in the axial direction. The detection member is provided with a plurality of detection members, the detection members are arranged one-to-one with the detection grooves, the detection surface is arranged parallel to the axial direction of the lens, and the reflection surface is arranged at an angle with the axial direction of the lens.

6. The laser handpiece of any one of claims 1 to 5, wherein, The inner wall of the detection groove is provided with a reflection layer.

7. The laser handpiece of any one of claims 1 to 5, wherein, The surface roughness Ra of the inner wall of the detection groove is greater than 1 micron.

8. The laser handpiece of any one of claims 1 to 5, wherein, The detection member is a reflective photoelectric switch, the reflective photoelectric switch comprises an identification plate, an emitter, and a receiver, and the emitter and the receiver are electrically connected to the identification plate.

9. The laser handpiece of any one of claims 1 to 5, wherein, The laser hand tool further comprises a detection ring, the detection ring is fixedly connected to the other of the fixing member and the moving member, and the detection ring is provided with the detection groove.

10. A laser therapy apparatus, characterized by, The laser treatment instrument comprises a laser and the laser hand tool according to any one of claims 1 to 9.

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