Dental semiconductor laser medical handle connecting structure

Abstract

The utility model relates to medical cosmesis equipment technical field especially is involved in a kind of dental semiconductor laser medical handle connecting structure, including medical handle, semiconductor laser head, docking disc and connecting component, and the coaxial fixed docking disc has one end of medical handle, semiconductor laser head is connected with one side of docking disc, and the other end is provided with connecting component;Connecting component is connected between semiconductor laser head, docking disc, including bottom plate, screw, transmission rod, driven cylinder, support frame, driving cylinder, limit slot and clamping block.The utility model is cooperated with the clamping block of limit slot in the top of driven cylinder and the bottom of driving cylinder, when the torsion of screwing screw exceeds preset threshold value, clamping block will slide in limit slot, make driving cylinder and driven cylinder produce relative displacement, interrupt torsion transmission, avoid screw thread silk due to continuous overload, the structure is automatically triggered protection by mechanical limit, without additional sensor or complex control, adapt high-frequency disassembly scene.

Description

Technical Field

[0001] This utility model relates to the field of medical aesthetic equipment technology, and in particular to a dental semiconductor laser medical handpiece connection structure. Background Technology

[0002] In the dental sub-segment of the medical aesthetics field, semiconductor laser devices have become core tools for medical aesthetic treatments such as teeth whitening, periodontal treatment, and dental restoration due to their precise energy output, good tissue compatibility, and minimally invasive characteristics. The core execution unit of this type of device consists of two parts: a medical handpiece and a laser head. The stable connection between the two directly determines the laser energy transmission efficiency, the accuracy of the treatment operation, and the safety of the device, which is a key link in ensuring the effectiveness of dental medical aesthetic treatments.

[0003] Currently, the mainstream method for connecting the dental semiconductor laser medical handpiece and laser head in the industry generally adopts a screw fastening structure. The design logic of this structure is based on the reliability of traditional mechanical connections. By pre-setting suitable micro-screw holes at the end of the handpiece or the laser head interface, the two are fixed together with micro-screws of the corresponding specifications. From a technical application perspective, although this connection method has the characteristics of simple structure and low manufacturing cost, and can meet the basic use needs in early low-frequency and low-precision dental treatment scenarios, its inherent defects have gradually become apparent as dental and cosmetic medical treatments have increasingly higher requirements for equipment operation flexibility, connection stability and service life.

[0004] In related technologies, dental semiconductor laser devices require frequent replacement of laser heads with different functions, resulting in extremely high frequency of disassembly and assembly operations between the handle and the laser head. Due to the overall size limitations of the equipment, the specifications of the connecting screws and screw holes are extremely small, and the thread profile is fine. In clinical operation, medical staff need to use a miniature screwdriver to tighten the screws. Affected by factors such as the precision of hand operation force control and the coaxiality deviation between the screwdriver and the screw, torque overload problems are very likely to occur. When the tightening torque exceeds the bearing limit of the thread structure, irreversible plastic deformation will occur in the internal thread of the screw hole or the external thread of the screw, i.e., "slippage". Once slippage occurs, it will not only cause the handle and laser head to be unstable and loose, resulting in problems such as loose connection and laser energy transmission deviation, but in severe cases, it will also cause the handle interface or laser head to be scrapped, directly increasing the equipment maintenance costs of medical institutions and the risk of interruption of diagnosis and treatment. Utility Model Content

[0005] To address the problem that current dental semiconductor laser medical handpieces and laser heads are connected by screws, which are prone to stripping due to excessive torque during frequent disassembly and assembly due to the small size of the screws and screw holes, resulting in low equipment availability, poor operating efficiency, and difficult maintenance, this utility model provides a dental semiconductor laser medical handpiece connection structure.

[0006] The dental semiconductor laser medical handpiece connection structure provided by this utility model adopts the following technical solution: A dental semiconductor laser medical handpiece connection structure includes: A medical handpiece, one end of which is coaxially fixed with a docking plate, a semiconductor laser head is connected to one side of the docking plate, and a connecting component is provided at the other end; The connecting assembly connects the semiconductor laser head and the docking plate, and includes a base plate, screws, a transmission rod, a driven cylinder, a support frame, and an active cylinder. The base plate is set on the docking plate, the screw is rotatably connected to the center of the base plate and passes through the docking plate, the semiconductor laser head is provided with a screw hole, and the screw is threaded into the screw hole. One end of the transmission rod is coaxially fixed with the screw, the driven cylinder is slidably engaged with the other end of the transmission rod, the C-shaped support frame is fixed on the base plate, and the active cylinder is rotatably connected to the center of the active cylinder, with one end of the driven cylinder and the active cylinder slidingly abutting against each other. A limiting groove is provided at the top edge of the driven cylinder, and a locking block is provided at the bottom edge of the driving cylinder. The locking block is slidably engaged in the limiting groove.

[0007] By adopting the above technical solution, the limiting groove at the top of the driven cylinder cooperates with the locking block at the bottom of the driving cylinder. When the torque of the screw exceeds the preset threshold, the locking block will slide in the limiting groove, causing the driving cylinder and the driven cylinder to generate relative displacement, interrupting the torque transmission, and preventing the screw from stripping due to continuous overload. This structure automatically triggers protection through mechanical limiting, without the need for additional sensors or complex control. It is suitable for high-frequency disassembly and assembly scenarios and has higher accuracy than the traditional method of judging the stop of tightening by manual touch. It can effectively intercept the peak torque that causes stripping and significantly reduce the stripping rate during the traditional screw tightening process.

[0008] Optionally, the limiting groove has a U-shaped structure, and one side of the locking block is a vertical structure, while the other side is an inclined structure.

[0009] By adopting the above technical solution, the vertical side of the locking block is tightly fitted with the closed edge of the limiting groove, so that when the active cylinder reverses, all the torque can be output to the driven cylinder, and then the driven cylinder drives the screw to reverse for unlocking. When the torque exceeds the critical value, the inclined side of the locking block will slide along the open inclined side of the limiting groove, so that the active cylinder and the driven cylinder will generate relative displacement, automatically cutting off the torque transmission, realizing bidirectional control of "efficient force transmission during fastening and immediate protection during overload".

[0010] Optionally, a docking cavity is provided through the shaft of the driven cylinder, the transmission rod is slidably docked in the docking cavity, and a slot is provided on the side wall of the docking cavity. A positioning plate is fixed on the outer wall of the slot, and the positioning plate is slidably engaged in the slot.

[0011] By adopting the above technical solution, the drive rod slides into the docking cavity at the shaft center of the driven cylinder, and the slot and positioning plate slide together. This allows the drive rod and driven cylinder to rotate synchronously to transmit torque, while also allowing them to slide relative to each other along the axial direction, providing displacement space for torque interruption during overload.

[0012] Optionally, a return spring is fitted around the outside of the transmission rod, with one end of the return spring abutting against the base plate and the other end abutting against the driven cylinder.

[0013] By adopting the above technical solution, after the overload protection is triggered, the active cylinder and the driven cylinder slide relative to each other, and the driven cylinder can be pushed to reset by the elastic reset force, so that the locking block is re-locked into the initial force transmission position of the limit groove. The next normal screwing operation can be resumed without manual adjustment, which improves the convenience of use.

[0014] Optionally, a through hole is provided at the edge of the base plate, and a threaded rod is provided in the through hole. The base plate is detachably connected to the mating plate through the threaded rod.

[0015] By adopting the above technical solution, the detachable connection structure between the bottom plate edge and the mating plate via a threaded rod facilitates the overall disassembly and maintenance of the connecting components.

[0016] Optionally, a round rod is coaxially fixed to the top of the active cylinder, and a polygonal groove is recessed in the top of the round rod.

[0017] By adopting the above technical solution, the polygonal slot can be adapted to standard polygonal tools, making it easier for medical staff to apply twisting force with the tools.

[0018] In summary, this utility model has at least one of the following beneficial technical effects: By utilizing the limiting groove at the top of the driven cylinder and the locking block at the bottom of the driving cylinder, when the torque of the screw exceeds a preset threshold, the locking block will slide in the limiting groove, causing relative displacement between the driving and driven cylinders, interrupting the torque transmission, and preventing the screw from stripping due to continuous overload. This structure automatically triggers protection through mechanical limiting, without the need for additional sensors or complex control, and is suitable for high-frequency disassembly and assembly scenarios. It is more accurate than the traditional method of judging the stop of tightening by manual touch, and can effectively intercept the peak torque that causes stripping. Compared with the traditional screw tightening process, the stripping rate is greatly reduced. By utilizing the tight fit between the vertical side of the locking block and the closed edge of the limiting groove, the torque can be fully output to the driven cylinder when the driving cylinder reverses, thereby driving the screw to reverse and unlock. When the torque exceeds the critical value, the inclined side of the locking block will slide along the open inclined side of the limiting groove, causing the driving cylinder and the driven cylinder to generate relative displacement, automatically cutting off the torque transmission, and realizing two-way control of "efficient force transmission during fastening and immediate protection during overload". By utilizing the docking cavity at the center of the driven cylinder to slide and connect with the transmission rod, and cooperating with the sliding engagement of the slot and the positioning plate, it is possible to achieve synchronous rotation of the transmission rod and the driven cylinder to transmit torque, while also allowing the two to slide relative to each other along the axial direction, providing displacement space for torque interruption in case of overload. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the external structure of a dental semiconductor laser medical handpiece connection structure in this embodiment.

[0020] Figure 2 This is a partially enlarged schematic diagram of the medical handle in this embodiment.

[0021] Figure 3 This is a schematic diagram of the connection component structure in this embodiment.

[0022] Figure 4 This is a schematic diagram of the driven cylinder and driving cylinder separation structure in this embodiment.

[0023] Figure 5 This is a schematic diagram of the connection structure between the transmission rod and the driven cylinder in this embodiment.

[0024] Explanation of reference numerals in the attached figures: 1. Medical handpiece; 2. Semiconductor laser head; 3. Docking plate; 4. Connecting assembly; 41. Base plate; 42. Screw; 43. Transmission rod; 44. Driven cylinder; 45. Support frame; 46. Active cylinder; 47. Limiting groove; 48. Locking block; 49. Docking cavity; 410. Locking slot; 411. Positioning plate; 5. Return spring. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-5 The present invention will be described in further detail below.

[0026] This utility model discloses a dental semiconductor laser medical handpiece connection structure.

[0027] It should be noted that in the description of this utility model, the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Reference Figure 1 and Figure 2A dental semiconductor laser medical handpiece connection structure includes a medical handpiece 1, a semiconductor laser head 2, a docking plate 3, and a connecting assembly 4. One end of the medical handpiece 1 is coaxially fixed to the docking plate 3, one side of the 3 is connected to the semiconductor laser head 2, and the other end is provided with the connecting assembly 4. The connecting assembly 4 connects the semiconductor laser head 2 and the docking plate 3, and includes a base plate 41, screws 42, a transmission rod 43, a driven cylinder 44, a support frame 45, an active cylinder 46, a limiting groove 47, and a locking block 48. The driven cylinder 44 is connected to the active cylinder 46 via the limiting groove 47 at its top. With the cooperation of the bottom locking block 48, when the torque of the screw 42 exceeds the preset threshold, the locking block 48 will slide in the limiting groove 47, causing the driving cylinder 46 and the driven cylinder 44 to generate relative displacement, interrupting the torque transmission and preventing the screw 42 from stripping due to continuous overload. This structure automatically triggers protection through mechanical limiting, without the need for additional sensors or complex control, and is suitable for high-frequency disassembly and assembly scenarios. It has higher accuracy than the traditional method of judging the stop of tightening by manual feeling, and can effectively intercept the peak torque that causes stripping. Compared with the traditional screw tightening process, the stripping rate is greatly reduced.

[0029] Specifically, the base plate 41 is set on the docking plate 3, the screw 42 is rotatably connected to the center of the base plate 41 and passes through the docking plate 3, the semiconductor laser head 2 is provided with a screw hole, the screw 42 is threaded into the screw hole, one end of the transmission rod 43 is coaxially fixed with the screw 42, the driven cylinder 44 is slidably engaged with the other end of the transmission rod 43, the C-shaped support frame 45 is fixed on the base plate 41, the active cylinder 46 is rotatably connected to the center of the active cylinder 46, and one end of the driven cylinder 44 and the active cylinder 46 slide against each other; a limit groove 47 is provided at the top edge of the driven cylinder 44, and a locking block 48 is provided at the bottom edge of the active cylinder 46, the locking block 48 is slidably engaged in the limit groove 47.

[0030] Reference Figure 3 and Figure 4 In this embodiment of the utility model, the limiting groove 47 has a U-shaped structure. One side of the locking block 48 is vertical and the other side is inclined. By tightly fitting the vertical side of the locking block 48 with the closed edge of the limiting groove 47, the torque of the driving cylinder 46 can be fully output to the driven cylinder 44 when it reverses. Then, the driven cylinder 44 drives the screw 42 to reverse for unlocking. When the torque exceeds the critical value, the inclined side of the locking block 48 will slide along the open inclined side of the limiting groove 47, causing the driving cylinder 46 and the driven cylinder 44 to generate relative displacement, automatically cutting off the torque transmission, and realizing bidirectional control of "efficient force transmission during fastening and immediate protection during overload".

[0031] Reference Figure 5A docking cavity 49 is provided through the shaft of the driven cylinder 44. The transmission rod 43 is slidably docked in the docking cavity 49. A slot 410 is provided on the side wall of the docking cavity 49. A positioning plate 411 is fixed on the outer wall of the slot 410. The positioning plate 411 is slidably engaged in the slot 410. By utilizing the docking cavity 49 at the shaft of the driven cylinder 44 and the transmission rod 43 to slide together, and with the slot 410 and the positioning plate 411 to slide together, the synchronous rotation of the transmission rod 43 and the driven cylinder 44 can be achieved to transmit torque. At the same time, the two can be allowed to slide relative to each other along the axial direction, providing displacement space for torque interruption in case of overload.

[0032] In this embodiment of the utility model, a reset spring 5 is sleeved on the outside of the transmission rod 43. One end of the reset spring 5 abuts against the base plate 41, and the other end abuts against the driven cylinder 44. After the overload protection is triggered, the driving cylinder 46 and the driven cylinder 44 slide relative to each other. The driven cylinder 44 can be pushed to reset by the elastic reset force, so that the locking block 48 is re-locked into the initial force transmission position of the limiting groove 47. The next normal turning operation can be restored without manual adjustment, which improves the convenience of use.

[0033] Specifically, in this embodiment of the present invention, a through hole is provided at the edge of the base plate 41, and a threaded rod is provided in the through hole. The base plate 41 is detachably connected to the docking plate 3 through the threaded rod. The detachable connection structure between the edge of the base plate 41 and the docking plate 3 through the threaded rod facilitates the overall disassembly and maintenance of the connecting component 4.

[0034] In this embodiment of the utility model, a round rod is coaxially fixed to the top of the active cylinder 46, and a polygonal groove is recessed in the top of the round rod. The polygonal groove can be adapted to a standard polygonal tool, making it convenient for medical staff to apply twisting force with the tool.

[0035] The implementation principle of the dental semiconductor laser medical handpiece connection structure of this utility model embodiment is as follows: First, the active cylinder 46 is rotated with an adapter tool by means of the polygonal groove recessed in the top round rod of the active cylinder 46; at this time, the active cylinder 46 drives the driven cylinder 44 to rotate synchronously; the driven cylinder 44 transmits the rotational torque to the transmission rod 43 through the cooperation of the slot 410 and the positioning plate 411, thereby driving the screw 42, which is coaxially fixed with the transmission rod 43, to rotate synchronously, so that the screw 42 is screwed into the screw hole of the semiconductor laser head 2, and the semiconductor laser head 2 and the docking plate 3 are fastened together. If the screwing torque exceeds the critical value, the inclined structure on one side of the locking block 48 will slide along the open inclined side of the limiting groove 47, causing the active cylinder 46 and the driven cylinder 44 to generate relative axial displacement, the transmission chain is interrupted, and the screw 42 stops rotating.

[0036] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A dental semiconductor laser medical handpiece connection structure, characterized in that, include: A medical handle (1) has a docking plate (3) coaxially fixed at one end of the medical handle (1), a semiconductor laser head (2) is connected to one side of the docking plate (3), and a connecting component (4) is provided at the other end. The connecting assembly (4) is connected between the semiconductor laser head (2) and the docking plate (3), and includes a base plate (41), a screw (42), a transmission rod (43), a driven cylinder (44), a support frame (45), and an active cylinder (46). The base plate (41) is set on the docking plate (3). The screw (42) is rotatably connected to the center of the base plate (41) and passes through the docking plate (3). The semiconductor laser head (2) is provided with a screw hole. The screw (42) is threaded into the screw hole. One end of the transmission rod (43) is coaxially fixed with the screw (42). The driven cylinder (44) is slidably engaged with the other end of the transmission rod (43). The support frame (45) with the C-shaped structure is fixed on the base plate (41). The active cylinder (46) is rotatably connected to the center of the active cylinder (46), and one end of the driven cylinder (44) and the active cylinder (46) slide against each other. A limiting groove (47) is provided at the top edge of the driven cylinder (44), and a locking block (48) is provided at the bottom edge of the driving cylinder (46). The locking block (48) is slidably engaged in the limiting groove (47).

2. The dental semiconductor laser medical handpiece connection structure according to claim 1, characterized in that, The limiting groove (47) has a U-shaped structure, and the locking block (48) has a vertical structure on one side and an inclined structure on the other side.

3. The dental semiconductor laser medical handpiece connection structure according to claim 1, characterized in that, A docking cavity (49) is provided through the shaft of the driven cylinder (44). The transmission rod (43) is slidably docked in the docking cavity (49). A slot (410) is provided on the side wall of the docking cavity (49). A positioning plate (411) is fixed on the outer wall of the slot (410). The positioning plate (411) is slidably engaged in the slot (410).

4. The dental semiconductor laser medical handpiece connection structure according to claim 1, characterized in that, A return spring (5) is sleeved on the outside of the transmission rod (43). One end of the return spring (5) abuts against the base plate (41), and the other end abuts against the driven cylinder (44).

5. The dental semiconductor laser medical handpiece connection structure according to claim 1, characterized in that, The bottom plate (41) has a through hole at its edge and a threaded rod inside the through hole. The bottom plate (41) is detachably connected to the docking plate (3) through the threaded rod.

6. The dental semiconductor laser medical handpiece connection structure according to claim 1, characterized in that, The top of the active cylinder (46) is coaxially fixed with a round rod, and a polygonal groove is recessed in the top of the round rod.

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