A kind of auxiliary joint for femtosecond laser myopia surgery

Abstract

The utility model relates to femtosecond laser technical field especially relates to a kind of auxiliary joints for femtosecond laser ophthalmic myopia operation, including the number of at least two joint body, the joint body is composed of lower cover body, middle tube body and upper end head, the first locking mechanism for fixedly connecting another joint body lower cover body is provided on the middle tube body of one joint body.The utility model utilizes lower cover body, middle tube body and upper end head to form an independent joint body, by setting up incomplete ball cavity in lower cover body, so as to connect one joint body on another joint body, utilize the resistance connection between telescopic plug bolt and ring groove;By setting up the limiting ring that is pulled by strong spring on lower cover body, utilize limiting ring to pull deflection swing bar, to carry out telescopic drive to limiting plug bolt, by making elastic roller in limiting plug bolt active resistance and lift ring pipe outer wall, the lift ring pipe of corresponding lower cover body opening position is limited to move, realize the reinforced assembly connection between adjacent two joint bodies.

Description

Technical Field

[0001] This utility model relates to the field of femtosecond laser technology, and in particular to an auxiliary joint for femtosecond laser ophthalmic myopia surgery. Background Technology

[0002] Femtosecond laser eye surgery relies on a variety of advanced auxiliary devices to ensure its success. During the procedure, the condition and comfort of the joints used by both the patient and the surgeon significantly impact the outcome. These include robotic arms and optical adjustment joints, both of which have multiple joint structures. These joints allow the robotic arm to move and position precisely in three-dimensional space, enabling the femtosecond laser to accurately aim and act on the target area. There are also structures with joint-like functions used to adjust the optical path and focus the laser.

[0003] Under current conditions, auxiliary joints for femtosecond laser ophthalmic myopia surgery, such as the one disclosed in CN217014428U, are often used. These joints facilitate the ball joint installation of two joint units by setting a swing block that can swing and unfold. The rubber rings on the joint units also provide dust protection, as is the case in the prior art. However, the assembly and connection between two adjacent joint units requires the use of the built-in ball joint. Because it is inconvenient to observe, it is difficult to achieve precise alignment during assembly, thus hindering convenient assembly. Although the rubber rings on the joint units can enhance the sealing between components, the disassembled and fragmented connection structure increases the difficulty of connecting the joint units and requires a high level of skill in operating the auxiliary joint. Utility Model Content

[0004] The purpose of this invention is to solve the problem of inconvenience in using auxiliary joints in femtosecond laser eye surgery, and to propose an auxiliary joint for femtosecond laser eye surgery.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An auxiliary joint for femtosecond laser eye surgery includes at least two segments, each segment consisting of a lower cover, a middle tube, and an upper end. The middle tube of one segment is provided with a first locking mechanism for fixing the lower cover of the other segment, and the lower cover of one segment is provided with a second locking mechanism for fixing the middle tube of the other segment.

[0007] Preferably, the lower cover, the middle tube, and the upper end are connected sequentially from bottom to top. The lower cover has an incomplete spherical cavity corresponding to the upper end, and the middle tube and the upper end both have a long cavity.

[0008] Preferably, the first locking mechanism includes a lifting ring tube threaded onto the middle tube body. A vertical cavity and a horizontal cavity are connected in the side wall of the middle tube body. A lifting rod that slidably abuts against the lifting ring tube is slidably fitted in the vertical cavity. A return spring is welded in the horizontal cavity. A telescopic plug that is slidably pulled by the lifting rod is welded on the return spring. A ball is movably fitted in the end of the telescopic plug. A corresponding annular groove for the ball is opened in the lower end of the incomplete spherical cavity.

[0009] Preferably, a drive wedge is integrally connected to the top of the lifting rod, and a driven oblique hole for slidingly fitting the drive wedge is provided in the telescopic bolt.

[0010] Preferably, the second locking mechanism includes a limiting flange integrally connected to the outer wall of the lower cover, a strong spring fixedly installed at the lower end of the limiting flange, a limiting ring with an inclined opening at the middle welded to the lower end of the strong spring, and a locking element provided between the limiting flange and the limiting ring. An extension seat is integrally connected to the outer wall of the lower cover, a deflection swing rod rotatably installed in the extension seat and movably pulled by the limiting ring, a limiting long hole horizontally opened in the lower cover, and a limiting plug slidably fitted in the limiting long hole and movably pulled by the deflection swing rod and movably abutting against the outer wall of the lifting ring tube.

[0011] Preferably, the upper end of the deflection lever is integrally connected to a cut end that moves against the inclined opening, the lower end of the deflection lever is provided with a traction long hole, the limiting plug is integrally connected to a driven short yoke that slides in the traction long hole, and the limiting plug is provided with an elastic roller that moves against the outer wall of the lifting ring tube.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. This utility model utilizes a lower cover, a middle tube, and an upper end to form an independent segment. By opening an incomplete spherical cavity in the lower cover, one segment can be connected to another segment, thereby providing a joint of suitable length for femtosecond laser ophthalmic jewelry surgery.

[0014] 2. This utility model involves opening an annular groove in the incomplete spherical cavity, threading a lifting annular tube that can be freely spirally raised and lowered on the middle tube body, and opening a vertical cavity and a horizontal cavity in the middle tube body to facilitate the installation of a telescopic plug that is driven by the lifting annular tube to achieve reciprocating extension and retraction. The abutting connection between the telescopic plug and the annular groove is used to achieve the initial assembly between two adjacent sections.

[0015] 3. This utility model sets a limiting ring on the lower cover body, which is traction-driven by a strong spring. The limiting ring pulls the deflection swing rod, thereby driving the extension and retraction of the limiting plug. By causing the elastic roller in the limiting plug to move against the outer wall of the lifting ring tube, the lifting ring tube at the corresponding opening position of the lower cover body is moved and limited, thus realizing the reinforced assembly connection between two adjacent sections. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an auxiliary joint for femtosecond laser ophthalmic myopia surgery proposed in this utility model;

[0017] Figure 2 This is a bottom view of an auxiliary joint for femtosecond laser ophthalmic myopia surgery proposed in this utility model;

[0018] Figure 3 This is a sectional view of an auxiliary joint for femtosecond laser ophthalmic myopia surgery proposed in this utility model;

[0019] Figure 4 This is a cross-sectional view of an auxiliary joint for femtosecond laser ophthalmic myopia surgery proposed in this utility model;

[0020] Figure 5 This is an enlarged schematic diagram of part A of the auxiliary joint for femtosecond laser ophthalmic myopia surgery proposed in this utility model;

[0021] Figure 6 This is an enlarged schematic diagram of part B of the auxiliary joint for femtosecond laser ophthalmic myopia surgery proposed in this utility model;

[0022] Figure 7 This is a cross-sectional view of the joint assembly state of an auxiliary joint for femtosecond laser ophthalmic myopia surgery proposed in this utility model.

[0023] In the picture:

[0024] 1. Section; 11. Lower cover; 12. Middle tube; 13. Upper end;

[0025] 2. First locking mechanism; 21. Lifting ring tube; 22. Vertical cavity; 23. Horizontal cavity; 24. Lifting rod; 25. Drive wedge block; 26. Return spring; 27. Telescopic bolt; 28. Driven oblique hole; 29. ​​Ball bearing; 210. Ring groove;

[0026] 3. Second locking mechanism; 31. Limiting flange; 32. Strong spring; 33. Limiting ring; 34. Locking element; 35. Extension seat; 36. Deflecting rocker arm; 361. Cut end; 362. Traction elongated hole; 37. Limiting elongated hole; 38. Limiting bolt; 381. Driven short yoke; 382. Elastic roller;

[0027] 4. Incomplete spherical cavity; 5. Long cavity. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] Reference Figures 1-7 An auxiliary joint for femtosecond laser eye surgery, comprising at least two segmental bodies 1, as detailed in the appendix to the instruction manual. Figure 7 By setting multiple segments 1 to achieve assembly and connection, it is helpful to form a joint structure of appropriate length according to actual needs, and it is also convenient to replace and repair when a segment 1 is damaged or malfunctions.

[0030] Please refer to the instruction manual for details. Figure 3 With appendix Figure 4 The segment 1 consists of a lower cover 11, a middle tube 12 and an upper end 13, all three of which are integrally molded. The segment 1 has a bullet-shaped structure that is narrow at the top and wide at the bottom to facilitate assembly.

[0031] A first locking mechanism 2 for fixing the lower cover 11 of another section 1 is provided on the middle tube 12 of one section 1, as detailed in the appendix to the instruction manual. Figure 4 With appendix Figure 5 The first locking mechanism 2 includes a lifting ring tube 21 threaded onto the middle tube body 12. A vertical cavity 22 and a horizontal cavity 23 are connected in the side wall of the middle tube body 12. A lifting rod 24, which slidably abuts against the lifting ring tube 21, is slidably fitted in the vertical cavity 22. The lifting ring tube 21 always abuts against and supports the lifting rod 24 during the spiral lifting process. When the lifting ring tube 21 moves to its highest position, it completely resists the lifting rod 24. A return spring 26 is welded into the horizontal cavity 23, and a return spring 26 is welded to it. The telescopic plug 27 is movably pulled by the lifting rod 24. A ball bearing 29 is movably fitted in the end of the telescopic plug 27. A corresponding annular groove 210 is opened in the lower end of the incomplete ball cavity 4. The lifting rod 24, which is fully retracted into the vertical cavity 22, squeezes the telescopic plug 27 through the drive wedge block 25. The telescopic plug 27, which is horizontally extended and retracted out of the transverse cavity 23, drives the ball bearing 29 to extend into the annular groove 210 until the ball bearing 29 moves against the inner wall of the annular groove 210, so as to facilitate joint deflection adjustment.

[0032] Please refer to the instruction manual for details. Figure 7It is worth noting that there is still a gap between two adjacent sections 1 in the assembled state, that is, the gap range between the lower cover 11 of one section 1 and the lower cover 11 of the other body 1, indicating that the middle tube 12 of one section 1 is not completely fitted into the lower cover 11 of the other section 1, so as to leave space for adjusting the lifting ring tube 21.

[0033] A second locking mechanism 3 is provided on the lower cover 11 of one section 1 for fixing and connecting the tube 12 in another section 1. See the appendix of the instruction manual for details. Figure 4 With appendix Figure 6 The second locking mechanism 3 includes a limiting flange 31 integrally connected to the outer wall of the lower cover 11. A strong spring 32 is fixedly installed at the lower end of the limiting flange 31. A limiting ring 33 with an inclined opening at the middle is welded to the lower end of the strong spring 32. A locking element 34 is provided between the limiting flange 31 and the limiting ring 33. It should be noted that vertically corresponding through holes are opened in the limiting flange 31 and the limiting ring 33. The locking element 34 is provided through the through holes. The locking element 34 uses a matching bolt and nut. Because the strong spring 32 makes the limiting ring 33 always have a downward tendency, and by screwing the nut through the lower end of the bolt through the limiting ring 33, the nut is used to abut and fix the limiting ring 33, thus determining the position of the limiting ring 33 with the limiting flange 31 as the base point. An extension seat 35 is integrally connected to the outer wall of the lower cover 11. The limiting ring 33 is rotatably installed in the extension seat 35. The deflecting lever 36 is traction-driven, and a limiting elongated hole 37 is horizontally opened in the lower cover 11. A limiting plug 38, which is slidably traction-driven by the deflecting lever 36 and movably abuts against the outer wall of the lifting ring tube 21, is slidably fitted in the limiting elongated hole 37. The limiting plug 38 is provided with an elastic roller 382 that movably abuts against the outer wall of the lifting ring tube 21. It should be noted that because the lifting ring tube 21 is a cylindrical structure, and there is a spherical deflection movement between two adjacent sections 1 within a certain angle, the deflecting lever 36 is used to make a large-scale position adjustment and limiting of the limiting plug 38. Then, by setting an elastic roller 382 in the limiting plug 38 that can move linearly back and forth, the elastic roller 382 can move and extend slightly when moving along the surface of the lifting ring tube 21. This can maintain the assembly connection between two adjacent sections 1, and can also use one section 1 as a base point to deflect and adjust the other section 1.

[0034] The elastic roller 382 consists of a cavity, a tension spring, and a roller. The cavity is opened inside the free end of the limiting plug 382, ​​the tension spring is welded inside the cavity, and the roller is fixedly connected to the tension spring. Under the elastic force of the tension spring, the roller makes dynamic contact with the outer wall of the lifting ring tube 21.

[0035] The lower cover 11, the middle tube 12 and the upper end 13 are connected sequentially from bottom to top. The lower cover 11 has an incomplete spherical cavity 4 corresponding to the upper end 13. The incomplete spherical cavity 4 corresponds to the upper end 13 and is used to movably accommodate the upper end 13 in the assembled state. The middle tube 12 and the upper end 13 have a long cavity 5.

[0036] The top of the lifting rod 24 is integrally connected to a drive wedge 25, and the telescopic bolt 27 has a driven oblique hole 28 for slidingly fitting the drive wedge 25. See the attached instruction manual for details. Figure 5 The vertically moving drive wedge 25 applies pressure to the driven oblique hole 28, thereby driving the telescopic plug 27, which is guided and limited by the transverse cavity 23, horizontally.

[0037] The upper end of the deflecting rocker arm 36 is integrally connected to a cut end 361 with a movable abutment inclined opening, and a traction long hole 362 is opened in the lower end of the deflecting rocker arm 36. A driven short yoke 381 that is slidably fitted in the traction long hole 362 is integrally connected to the limiting plug 38. The deflecting rocker arm 36 is used to drive the limiting plug 38 to be pulled.

[0038] It should be noted that the specific model and specifications of the lifting ring tube 21 and the limiting ring 33 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated here.

[0039] The functional principle of this utility model can be explained through the following operation methods:

[0040] The upper end 13 of one section 1 is fitted into the lower cover 11 of another section 1;

[0041] The lifting ring tube 21 on a section 1 at the lower position is spiraled upward to continuously apply pressure to the lifting rod 24. The driving wedge 25 and the driven oblique hole 28 apply pressure to the telescopic bolt 27 until the ball 29 in the telescopic bolt 27 abuts against the inner wall of the ring groove 210.

[0042] A limiting ring 33 is vertically pressed down on a segment 1 at the upper position. During this process, the limiting ring 33 applies pressure to the cut end 361 through the inclined opening, causing the deflection rod 36 to deflect. The deflection rod 36 moves along the limiting bolt 37 through the traction long hole 362 and the driven short yoke 381 to squeeze the limiting bolt 38 until the limiting bolt 38 is engaged with the second ring groove 39. At this time, the limiting ring 33 is fixed by the locking member 34.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An auxiliary joint for femtosecond laser ophthalmic myopia surgery, comprising at least two segments (1), characterized in that, The segment (1) is composed of a lower cover (11), a middle tube (12) and an upper end (13). The middle tube (12) of one segment (1) is provided with a first locking mechanism (2) for fixing the lower cover (11) of another segment (1), and the lower cover (11) of one segment (1) is provided with a second locking mechanism (3) for fixing the middle tube (12) of another segment (1).

2. The auxiliary joint for femtosecond laser ophthalmic myopia surgery according to claim 1, characterized in that, The lower cover (11), the middle tube (12) and the upper end (13) are connected sequentially from bottom to top. The lower cover (11) has an incomplete spherical cavity (4) corresponding to the upper end (13). The middle tube (12) and the upper end (13) have a long cavity (5) together.

3. The auxiliary joint for femtosecond laser ophthalmic myopia surgery according to claim 2, characterized in that, The first locking mechanism (2) includes a lifting ring tube (21) threaded onto the middle tube body (12). A vertical cavity (22) and a horizontal cavity (23) are connected in the side wall of the middle tube body (12). A lifting rod (24) that slidably abuts against the lifting ring tube (21) is slidably fitted in the vertical cavity (22). A return spring (26) is welded in the horizontal cavity (23). A telescopic plug (27) that is movably pulled by the lifting rod (24) is welded on the return spring (26). A ball (29) is movably fitted in the end of the telescopic plug (27). A ring groove (210) corresponding to the ball (29) is opened in the lower end of the incomplete ball cavity (4).

4. The auxiliary joint for femtosecond laser ophthalmic myopia surgery according to claim 3, characterized in that, The top of the lifting rod (24) is integrally connected to a drive wedge (25), and the telescopic bolt (27) has a driven oblique hole (28) for slidingly fitting the drive wedge (25).

5. The auxiliary joint for femtosecond laser ophthalmic myopia surgery according to claim 4, characterized in that, The second locking mechanism (3) includes a limiting flange (31) integrally connected to the outer wall of the lower cover (11). A strong spring (32) is fixedly installed at the lower end of the limiting flange (31). A limiting ring (33) with an inclined opening at the middle is welded to the lower end of the strong spring (32). A locking member (34) is provided between the limiting flange (31) and the limiting ring (33). An extension seat (35) is integrally connected to the outer wall of the lower cover (11). A deflection swing rod (36) that is rotatably pulled by the limiting ring (33) is rotatably installed in the extension seat (35). A limiting long hole (37) is horizontally opened in the lower cover (11). A limiting plug (38) that is slidably pulled by the deflection swing rod (36) and moves against the outer wall of the lifting ring tube (21) is slidably fitted in the limiting long hole (37).

6. The auxiliary joint for femtosecond laser ophthalmic myopia surgery according to claim 5, characterized in that, The upper end of the deflection lever (36) is integrally connected to a cut end (361) that moves against the inclined opening. The lower end of the deflection lever (36) is provided with a traction long hole (362). The limit plug (38) is integrally connected to a driven short yoke (381) that slides in the traction long hole (362). The limit plug (38) is provided with an elastic roller (382) that moves against the outer wall of the lifting ring tube (21).

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