Positioning mechanism for corneal topography instrument

Abstract

The utility model relates to the field of corneal topography instruments, and discloses a positioning mechanism for a corneal topography instrument, which comprises a base, the base is provided with a support block for supporting a corneal topography instrument body to slide, and the support block is in wedge fit with the base; according to the corneal topography instrument, the supporting block which is in wedge fit with the base and used for supporting the corneal topography instrument body to slide is arranged, the limiting assembly for limiting the supporting block is arranged on the base, and the positioning assembly for positioning the corneal topography instrument body is further arranged on the base; the positioning assembly can position and fix the moving position of the corneal topography instrument body, when maintenance is needed, limiting of the limiting assembly on the supporting block and wedge-shaped matching of the supporting block and the base are canceled, and then the corneal topography instrument body can be detached from the base. The corneal topography instrument body can be conveniently and quickly detached from the base for maintenance, so that the downtime caused by detachment and maintenance can be shortened, and the influence on daily diagnosis and treatment activities is reduced.

Description

Technical Field

[0001] The present application relates to the field of corneal topographs, and in particular to a positioning mechanism for corneal topographs. Background Art

[0002] A corneal topographer is a precision ophthalmic medical device used to measure and depict the surface morphology and curvature of the cornea, providing ophthalmologists with detailed map-like images to facilitate diagnosis, treatment planning, and monitoring of corneal diseases and conditions, such as keratoconus, corneal astigmatism, and corneal scarring, as well as to assess patients suitable for laser vision correction surgery.

[0003] When using an existing corneal topograph, the corneal topograph is adjusted horizontally or vertically on the base to achieve a suitable detection position. In order to facilitate the smooth movement of the corneal topograph, the support frame used to support the corneal topograph is often fixed on the base. Therefore, when the corneal topograph needs to be repaired, it takes a long time to disassemble, which will lead to prolonged equipment downtime and affect daily diagnosis and treatment activities. In order to solve the above problems, a positioning mechanism for a corneal topograph is proposed.

[0004] The above information disclosed in this background technology is only used to increase the understanding of the background technology of this application. Therefore, it may contain information that does not constitute the prior art known to ordinary technicians in this field. Utility Model Content

[0005] In order to solve the problem of corneal topograph, the present application provides a positioning mechanism for corneal topograph.

[0006] The present application provides a positioning mechanism for a corneal topographer using the following technical solutions:

[0007] A positioning mechanism for a corneal topograph includes a base, the base is provided with a support block for supporting the sliding of the corneal topograph body, the support block is wedge-shapedly matched with the base, the base is provided with a limit assembly for limiting the support block, and the base is provided with a positioning assembly for positioning the corneal topograph body.

[0008] Preferably, the positioning assembly includes a movable frame, a universal wheel, a sliding rod, and a sliding rail. The movable frame is fixed to the corneal topographer body, the universal wheel is located at the bottom of the movable frame, both ends of the sliding rod pass through the movable frame and slide in the sliding rail, the sliding rail is fixed on the support block, and the universal wheel slides on the base.

[0009] Preferably, the limiting assembly includes an arc groove, a limiting plate, a limiting pin, a limiting block, and a spring. The arc groove is opened on the support block and extends to the base. The limiting plate rotates on the base. The limiting pin is threadedly connected to the limiting plate. The limiting block is located at the bottom of the limiting pin. The spring is sleeved on the limiting pin. The two ends of the spring are respectively fixed to the limiting plate and the limiting block.

[0010] Preferably, the movable frame is provided with an adjustment button and an auxiliary handle.

[0011] Preferably, the base is provided with a support assembly for supporting the patient's head.

[0012] Preferably, the support assembly includes a threaded rod, an adjustment cylinder, a bracket, a guide rod, and a top plate. The threaded rod and the guide rod are both fixed on the base, and the bracket is simultaneously mounted on the threaded rod and the guide rod. The adjustment cylinder is located at the bottom of the bracket and is threadedly connected to the threaded rod, and the top plate is fixed on the threaded rod.

[0013] In summary, compared with the related art, the present invention has the following beneficial effects:

[0014] By setting a support block that cooperates with the base wedge shape to support the sliding of the corneal topograph body, a limiting component for limiting the support block is provided on the base, and a positioning component for positioning the corneal topograph body is also provided on the base. When in use, the positioning component can position and fix the moving position of the corneal topograph body. When the corneal topograph body needs to be repaired, the limiting of the support block by the limiting component and the wedge-shaped cooperation between the support block and the base are cancelled, and the corneal topograph body can be removed from the base. Compared with the relevant technology, the limiting of the support block by the limiting component and the wedge-shaped cooperation between the support block and the base are cancelled, which facilitates the rapid removal of the corneal topograph body from the base for maintenance, thereby reducing the downtime caused by disassembly and maintenance, and reducing the impact on daily diagnosis and treatment activities. At the same time, the wedge-shaped cooperation between the support block and the base can reduce the precision adjustment work of the corneal topograph body after the maintenance is completed, thereby improving the efficiency of the maintenance and restoration of the corneal topograph body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic side view of the overall structure of the embodiment of the application;

[0016] Figure 2 This is a schematic diagram of the structure of the limit assembly of the embodiment of the application;

[0017] Figure 3 yes Figure 2 A in the middle is an enlarged structural diagram;

[0018] Figure 4It is a schematic diagram of the overall front view structure of the embodiment of the application;

[0019] Figure 5 It is a schematic diagram of the detachable state structure of the embodiment of the application.

[0020] Explanation of the accompanying symbols: 1. Base; 2. Support block; 3. Arc groove; 4. Limit plate; 5. Limit pin; 6. Limit block; 7. Spring; 8. Moving frame; 9. Universal wheel; 10. Adjustment button; 11. Auxiliary handle; 12. Slide rod; 13. Slide rail; 14. Corneal topograph body; 15. Threaded rod; 16. Adjustment cylinder; 17. Bracket; 18. Guide rod; 19. Top plate. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1-5 This application is described in further detail.

[0022] The present application embodiment discloses a positioning mechanism for a corneal topographer. Figure 1-5 A positioning mechanism for a corneal topograph includes a base 1, a support block 2 for supporting a corneal topograph body 14 to slide, the support block 2 being wedge-fitted with the base 1, a limiting component for limiting the support block 2, and a positioning component for positioning the corneal topograph body 14 on the base 1;

[0023] By adopting the above technical solution, when in use, the positioning component can position and fix the moving position of the corneal topograph body 14. When the corneal topograph body 14 needs to be inspected and repaired, the limiting component on the support block 2 and the wedge-shaped fit between the support block 2 and the base 1 are cancelled, and the corneal topograph body 14 can be removed from the base 1.

[0024] Reference Figure 1 、 4 5. The positioning assembly includes a mobile frame 8, a universal wheel 9, a slide rod 12, and a slide rail 13. The mobile frame 8 is fixed to the corneal topographer body 14. The universal wheel 9 is located at the bottom of the mobile frame 8. Both ends of the slide rod 12 pass through the mobile frame 8 and slide in the slide rail 13. The slide rail 13 is fixed to the support block 2, and the universal wheel 9 slides on the base 1.

[0025] It should be noted that the universal wheel 9 has a self-locking function and can be locked when the corneal topograph body 14 is moved and adjusted to a suitable position;

[0026] By adopting the above technical solution, when the position of the corneal topograph body 14 needs to be adjusted, the slide bar 12 slides on the slide rail 13 to realize the longitudinal movement of the mobile frame 8, and the mobile frame 8 slides on the slide bar 12 to realize the lateral movement of the mobile frame 8. The universal wheel 9 can reduce the resistance of the movement of the mobile frame 8 to make the movement of the mobile frame 8 stable, and is locked when the corneal topograph body 14 is moved and adjusted to the appropriate position.

[0027] Reference Figure 2 、 3 , 5, the limit assembly includes an arc groove 3, a limit plate 4, a limit pin 5, a limit block 6, and a spring 7. The arc groove 3 is opened on the support block 2 and extends to the base 1. The limit plate 4 rotates on the base 1. The limit pin 5 is threadedly connected to the limit plate 4. The limit block 6 is located at the bottom of the limit pin 5. The spring 7 is sleeved on the limit pin 5. The two ends of the spring 7 are respectively fixed to the limit plate 4 and the limit block 6;

[0028] It should be noted that the limit plate 4 and its upper limit pin 5 slide along the arc angle of the arc groove 3, thereby limiting or canceling the limit of the support block 2;

[0029] It should be further explained that a slot for the limiting block 6 to slide is extended in the arc groove 3;

[0030] By adopting the above technical solution, when the limit plate 4 is perpendicular to the base 1, the limit pin 5 is located on the support block 2 and the limit block 6 is located in the slot. At this time, the limit plate 4 plays a role of limiting and fixing the support block 2. When the corneal topographer body 14 needs to be disassembled and repaired, it is necessary to cancel the limit between the limit plate 4 and the support block 2, turn the limit pin 5, and the spring 7 contracts to make the limit block 6 slide out of the slot. Slide the limit pin 5 and the upper block 6 ninety degrees clockwise along the arc groove 3 so that the limit plate 4 is parallel to the base 1 to cancel the limit.

[0031] Reference Figure 5 , the movable frame 8 is provided with an adjustment button 10 and an auxiliary handle 11;

[0032] By adopting the above technical solution, the position of the movable frame 8 is adjusted by pulling the auxiliary handle 11 , and the adjustment button 10 is used to adjust the imaging distance and angle of the corneal topograph body 14 .

[0033] Reference Figure 5 The base 1 is provided with a support assembly for supporting the patient's head, and the support assembly includes a threaded rod 15, an adjustment cylinder 16, a bracket 17, a guide rod 18, and a top plate 19. The threaded rod 15 and the guide rod 18 are both fixed to the base 1, and the bracket 17 is simultaneously sleeved on the threaded rod 15 and the guide rod 18. The adjustment cylinder 16 is located at the bottom of the bracket 17 and is threadedly connected to the threaded rod 15. The top plate 19 is fixed to the threaded rod 15;

[0034] By adopting the above technical solution, when in use, the patient should take a seat and rest his chin on the bracket 17, with his forehead against the top plate 19, to support the patient's head and keep it stable, so that the corneal topograph body 14 can collect corneal images. The height of the bracket 17 required by different patients can be adjusted by screwing the adjustment cylinder 16 upward or downward on the threaded rod 15, and the guide rod 18 guides the movement of the bracket 17.

[0035] The implementation principle of the positioning mechanism for a corneal topograph in an embodiment of the present application is as follows: when in use, the patient should take a seat and rest his chin on the bracket 17, with his forehead against the top plate 19, to keep the head stable, and pull the auxiliary handle 11 to adjust the position of the movable frame 8 and the corneal topograph body 14 thereon to a suitable position, and adjust the imaging distance and angle of the corneal topograph body 14 to a suitable position through the adjustment button 10 to collect the patient's corneal condition, and when the corneal topograph body 14 needs to be disassembled and repaired, screw the limit pin 5, the spring 7 contracts to make the limit block 6 slide out of the slot, and slide the limit pin 5 and the upper block 6 ninety degrees clockwise along the arc groove 3 to make the limit plate 4 parallel to the base 1 to cancel the limit, pull the support block 2 out of the base 1 to cancel the wedge-shaped fit with the base 1, and then remove the corneal topograph body 14 for inspection.

[0036] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0037] Secondly: The drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the utility model can be combined with each other.

[0038] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0039] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A positioning mechanism for a corneal topographer, comprising a base (1), characterized in that: The base (1) is provided with a support block (2) for supporting the sliding of the corneal topograph body (14); the support block (2) and the base (1) are wedge-shaped matched; the base (1) is provided with a limiting component for limiting the support block (2); and the base (1) is provided with a positioning component for positioning the corneal topograph body (14).

2. A positioning mechanism for a corneal topographer according to claim 1, characterized in that: The positioning assembly comprises a mobile frame (8), a universal wheel (9), a slide bar (12), and a slide rail (13); the mobile frame (8) is fixed to the corneal topographer body (14); the universal wheel (9) is located at the bottom of the mobile frame (8); both ends of the slide bar (12) pass through the mobile frame (8) and slide in the slide rail (13); the slide rail (13) is fixed on the support block (2); and the universal wheel (9) slides on the base (1).

3. The positioning mechanism for a corneal topographer according to claim 1, characterized in that: The limiting assembly comprises an arc groove (3), a limiting plate (4), a limiting pin (5), a limiting block (6), and a spring (7); the arc groove (3) is provided on the support block (2) and extends to the base (1); the limiting plate (4) is rotated on the base (1); the limiting pin (5) is threadedly connected to the limiting plate (4); the limiting block (6) is located at the bottom of the limiting pin (5); the spring (7) is sleeved on the limiting pin (5); and the two ends of the spring (7) are respectively fixed to the limiting plate (4) and the limiting block (6).

4. The positioning mechanism for a corneal topographer according to claim 2, characterized in that: The movable frame (8) is provided with an adjusting button (10) and an auxiliary handle (11).

5. The positioning mechanism for a corneal topographer according to claim 1, characterized in that: The base (1) is provided with a support component for supporting the patient's head.

6. The positioning mechanism for a corneal topographer according to claim 5, characterized in that: The support assembly comprises a threaded rod (15), an adjusting cylinder (16), a bracket (17), a guide rod (18), and a top plate (19); the threaded rod (15) and the guide rod (18) are both fixed on the base (1); the bracket (17) is simultaneously sleeved on the threaded rod (15) and the guide rod (18); the adjusting cylinder (16) is located at the bottom of the bracket (17) and is threadedly connected to the threaded rod (15); and the top plate (19) is fixed on the threaded rod (15).

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