Assessment device for the corneal ablation volume of a refractive surgery

Abstract

The utility model belongs to the field of refraction operation cornea removal quantity evaluation, especially is refraction operation cornea removal quantity's evaluation device that uses, aiming at the existing in the process of using through chin baffle to place chin, but chin baffle needs with patient skin direct contact, possibly residual sebum, sweat and other pollutants, when using, easy to increase the risk of cross infection (such as bacteria, virus transmission) problem, present and propose the following scheme, it includes base and moving seat, the both sides of base's top are all fixedly arranged with frame body, the one end of moving seat is opened with moving hole, the inner wall sliding connection of moving hole has the moving rod of being convenient for moving seat left and right movement, through protection mechanism can effectively prevent patient skin and forehead baffle, chin support plate contact, avoid cross infection, through fixed mechanism can adjust the height of forehead baffle and chin support plate, carry out fixation.

Description

Technical Field

[0001] This utility model relates to the field of corneal removal amount assessment technology in refractive surgery, and in particular to an assessment device for corneal removal amount in refractive surgery. Background Technology

[0002] Refractive surgery is a procedure to correct vision. Before the surgery, the patient's cornea needs to be assessed. The assessment devices used for the amount of corneal tissue removed in refractive surgery mainly include the following: corneal topography instrument, anterior segment analyzer, and ultrasonic corneal thickness meter.

[0003] A search revealed that patent CN209252822U discloses a corneal topography instrument, but this corneal topography instrument has the following shortcomings in use:

[0004] During use, the chin guard is placed on the chin. However, the chin guard needs to be in direct contact with the patient's skin, which may leave behind contaminants such as sebum and sweat. This can increase the risk of cross-infection (such as the spread of bacteria and viruses) during use. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies where a chin guard is placed under the chin during use, but the chin guard needs to be in direct contact with the patient's skin, which may leave behind contaminants such as sebum and sweat, increasing the risk of cross-infection (such as the spread of bacteria and viruses) during use. The invention proposes an assessment device for corneal removal volume in refractive surgery.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An assessment device for corneal removal volume in refractive surgery includes a base and a movable seat. Frames are fixedly mounted on both sides of the top of the base. One end of the movable seat has a movable hole, and a movable rod is slidably connected to the inner wall of the movable hole to facilitate left and right movement of the movable seat. Both ends of the movable rod are slidably connected to the sides of the two frames that are close to each other. A support plate and a handle are fixedly mounted on the top of the movable seat. A shell is fixedly mounted on the top of the support plate. A bracket is fixedly mounted on one side of the top of the base. The bracket has a chin rest for placing the chin and a forehead shield for supporting the forehead. Circular holes are provided at both ends of the chin rest and the forehead shield. The chin rest and the forehead shield are movably fitted onto the bracket through these circular holes.

[0008] The protective mechanism is installed on the forehead shield and chin rest to prevent the patient's skin from coming into contact with the forehead shield and chin rest;

[0009] The fixing mechanism is mounted on the bracket to fix the height of the forehead shield and chin support.

[0010] In one possible design, the protective mechanism includes two protective sleeves for preventing the patient's skin from contacting the forehead panel and chin rest, with the two sleeves respectively fitted over the forehead panel and chin rest.

[0011] In one possible design, the fixing mechanism includes two first fixing sleeves for fixing the height of the forehead baffle and two second fixing sleeves for fixing the height of the chin support. The bracket has external threads, and the inner walls of the first fixing sleeves and the inner walls of the second fixing sleeves have internal threads. The two first fixing sleeves are threaded to both ends of the bracket, and the two second fixing sleeves are threaded to both ends of the bracket.

[0012] In one possible design, a groove is provided on one side of the bottom of the movable seat, a universal sleeve is fixed to the inner wall of the groove, and a universal ball is movably provided on the inner wall of the universal sleeve for supporting one end of the movable seat.

[0013] In one possible design, the protective cover consists of a fabric strip, a hook and loop fastener, and a loop fastener side. One side of the hook and loop fastener is sewn to one side of the fabric strip, and one side of the loop fastener is sewn to one end of the fabric strip. The hook and loop fastener sides are then bonded together.

[0014] In one possible design, each of the two frames has a movable groove on one side that is close to each other, and both ends of the movable rod are fixedly provided with movable blocks, one side of which is slidably connected to the inner wall of the movable groove.

[0015] In one possible design, the bottom of the base is fixedly provided with a rubber pad for anti-slip purposes when placed on a table, and the bottom of the rubber pad has anti-slip texture.

[0016] In one possible design, a conical Placido disk is mounted on the inner wall of the housing, and four illumination beads are evenly mounted on the inner wall of the housing at positions corresponding to the tip of the Placido disk. A lens and a CCD digital camera are provided on the inner rear surface of the housing.

[0017] In this application, before use, the device is equipped with a workstation system, including a computer, monitor, keyboard, and corneal topography software. First, the height of the chin support and forehead shield is adjusted as needed. The chin support is held and moved upwards to a suitable height. The second fixing sleeve is rotated so that its top supports the chin support. Then, the forehead shield is held and moved upwards to a suitable height. The first fixing sleeve is rotated so that its top supports the forehead shield. This allows for adjustment and fixation of the height of the forehead shield and chin support, thus protecting the forehead from drafts. The protective sleeves (composed of fabric strips, hook and loop fasteners) are respectively fitted onto the forehead shield and chin rest. The hook and loop fasteners securely fasten the sleeves to the corresponding components. The patient then sits in front of the assessment device, gently placing their chin on the chin rest and their forehead against the forehead shield. As needed, the patient moves the movable base using the handle to align the outer shell on top of the support plate (containing the Placido disc, illumination bulbs, lens, and CCD digital camera) with the patient's eyes. The movable base moves via a moving rod in a slot on the frame. The device slides inward to move left and right. The illumination lamp lights up the Placido disk (a transparent cone with concentric circles) from the back, forming black and white concentric rings. The virtual image formed on the subject's eye is reflected back and captured by a camera inside the testing window. All irregular features on the subject's cornea are represented by changes in the Placido disk's imaging pattern. This is then processed by a measurement program. The simulated image, after processing, can be used for measurement evaluation. The cornea is reconstructed based on the acquired data, and the measurement results are displayed on the screen. Protective sleeves effectively prevent contact between the patient's skin and the forehead / chin rest, avoiding cross-infection. The material of the cloth strips can be medical non-woven fabric or medical antibacterial non-woven fabric (the specific material can be selected according to actual needs). The device comes with multiple protective sleeves, which can be disposable or reusable. It is important to note that the protective sleeves need to be replaced after use. Removed protective sleeves can be discarded (disposable) or cleaned and disinfected (reusable).

[0018] The beneficial effects of this utility model are as follows:

[0019] In this invention, the assessment device for corneal removal volume in refractive surgery, through a protective mechanism and a protective sleeve, can effectively prevent the patient's skin from contacting the forehead and chin supports, thus avoiding cross-infection.

[0020] In this invention, the assessment device for corneal removal volume in refractive surgery uses a fixing mechanism. By holding the chin support plate and moving it upwards to a suitable height, the second fixing sleeve is rotated so that the top of the second fixing sleeve supports the chin support plate. Then, by holding the forehead baffle and moving it upwards to a suitable height, the first fixing sleeve is rotated so that the top of the first fixing sleeve supports the forehead baffle. This allows for adjustment and fixing of the height of the forehead baffle and the chin support plate.

[0021] In this invention, the protective mechanism can effectively prevent the patient's skin from coming into contact with the forehead shield and chin support, thus avoiding cross-infection. The fixing mechanism can adjust the height of the forehead shield and chin support and fix them in place. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the main structure of the evaluation device for corneal removal volume in refractive surgery proposed in this utility model.

[0023] Figure 2 This is a schematic diagram of the protective sleeve structure of the evaluation device for corneal removal volume in refractive surgery proposed in this utility model.

[0024] Figure 3 This is a schematic diagram of the upward-viewing structure of the movable seat of the evaluation device for corneal removal volume in refractive surgery proposed in this utility model.

[0025] Figure 4 This is a schematic diagram of the universal sleeve and universal ball structure of the evaluation device for corneal removal volume in refractive surgery proposed in this utility model.

[0026] In the diagram: 1. Base; 2. Movable seat; 3. Support plate; 4. Outer shell; 5. Frame; 6. Movable rod; 7. Fabric strip; 8. Chin support plate; 9. First fixing sleeve; 10. Forehead baffle; 11. External thread; 12. Protective sleeve; 13. Bracket; 14. Second fixing sleeve; 15. Velcro hook surface; 16. Universal sleeve; 17. Universal ball; 18. Movable groove; 19. Grip; 20. Rubber pad. Detailed Implementation

[0027] 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.

[0028] Example 1

[0029] Reference Figure 1-4The evaluation device includes: a base 1, a movable seat 2, a frame 5, a support plate 3, a shell 4, a bracket 13, a chin support plate 8, a forehead baffle 10, and related protective and fixing mechanisms. The base 1 is made of high-strength aluminum alloy, providing good stability and load-bearing capacity. A rubber pad 20 is fixedly installed on the bottom of the base 1. The bottom of the rubber pad 20 has anti-slip textures to prevent the device from sliding during use. The rubber pad 20 is made of natural rubber, which has excellent anti-slip and wear-resistant properties.

[0030] The movable base 2 is also made of aluminum alloy. One end of the movable base 2 has a moving hole, and a moving rod 6 is slidably connected to the inner wall of the moving hole. The moving rod 6 is made of stainless steel, possessing high strength and corrosion resistance. Both ends of the moving rod 6 are slidably connected to the sides of the two frame bodies 5 that are close to each other, enabling the movable base 2 to move left and right. In addition, a groove is provided on one side of the bottom of the movable base 2. A universal sleeve 16 is fixed to the inner wall of the groove. The universal sleeve 16 is made of wear-resistant nylon. A universal ball 17 is movably installed on the inner wall of the universal sleeve 16. The universal ball 17 is made of high-strength steel and has a rust-proof coating, used to support and fine-tune one end of the movable base 2.

[0031] The support plate 3 is made of lightweight aluminum alloy, possessing sufficient strength and stability to support the outer casing 4. The outer casing 4 can be made of high-quality ABS plastic, which has good impact resistance and insulation properties. A conical Placido disc is installed on the inner wall of the outer casing 4. The Placido disc is made of high-precision optical glass and coated with an anti-reflective film to improve light transmission. Four LED lights are evenly installed on the inner wall of the outer casing 4, corresponding to the tip of the Placido disc. These LED lights are energy-saving, have a long lifespan, and high brightness. A lens and a CCD digital camera are located on the inner rear surface of the outer casing 4. The lens is made of high-precision optical glass.

[0032] The bracket 13 is made of stainless steel, which has high strength and corrosion resistance. The bracket 13 has external threads 11 for connection with the fixing mechanism. Both ends of the chin support plate 8 and the forehead baffle 10 have round holes, allowing them to be movably fitted onto the bracket 13 for height adjustment.

[0033] The protective mechanism includes two protective covers 12, which are respectively fitted onto the forehead shield 10 and the chin support 8. The protective cover 12 consists of a strip of cloth 7, a hook and loop fastener 15, and a loop fastener surface. The hook and loop fastener 15 and the loop fastener surface are made of nylon material, which has high strength and durability.

[0034] The fixing mechanism includes two first fixing sleeves 9 and two second fixing sleeves 14, all of which are made of high-strength stainless steel. The inner walls of the first fixing sleeves 9 and the inner walls of the second fixing sleeves 14 are provided with internal threads, which cooperate with the external threads 11 on the bracket 13 to fix the height of the forehead baffle 10 and the chin support plate 8.

[0035] This application is used in the field of corneal removal assessment in refractive surgery, but it can also be used in other fields applicable to this application.

[0036] Example 2

[0037] refer to Figure 1-4 An improvement upon Example 1: an assessment device for corneal retraction volume in refractive surgery, applicable in the field of assessing corneal retraction volume in refractive surgery.

[0038] The two frames 5 are provided with moving grooves 18 on the side that is close to each other to reduce the wear of the moving blocks during the sliding process.

[0039] The top of the mobile seat 2 is fixedly equipped with a handle 19. The handle 19 is ergonomically designed and covered with non-slip rubber, making it easy for medical staff to hold and operate.

[0040] The working principles of the lighting beads, Placido disc, lens, and CCD digital camera are the same as those of the authorized number CN209252822U, and will not be repeated here.

[0041] 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 assessment device for corneal removal volume in refractive surgery, characterized in that, The device includes a base (1) and a movable seat (2). The base (1) has a frame (5) fixedly installed on both sides of its top. The movable seat (2) has a movable hole at one end. The inner wall of the movable hole is slidably connected to a movable rod (6) that facilitates the left and right movement of the movable seat (2). The two ends of the movable rod (6) are slidably connected to the two frames (5) on their respective sides. The top of the movable seat (2) is fixedly provided with a support plate (3) and a handle (19). The top of the support plate (3) is fixedly provided with a shell (4). The top side of the base (1) is fixedly provided with a bracket (13). The bracket (13) is provided with a chin support plate (8) for placing the chin and a forehead baffle (10) for supporting the forehead. The two ends of the chin support plate (8) and the two ends of the forehead baffle (10) are provided with round holes. The chin support plate (8) and the forehead baffle (10) are movably fitted onto the bracket (13) through the round holes. The protective mechanism is set on the forehead shield (10) and chin rest (8) to prevent the patient's skin from contacting the forehead shield (10) and chin rest (8); A fixing mechanism is provided on the bracket (13) to fix the height of the forehead baffle (10) and the chin support (8).

2. The assessment device for corneal removal volume in refractive surgery according to claim 1, characterized in that, The protective mechanism includes two protective sleeves (12) for preventing the patient's skin from contacting the forehead shield (10) and the chin support (8), with the two protective sleeves (12) respectively fitted onto the forehead shield (10) and the chin support (8).

3. The assessment device for corneal removal volume in refractive surgery according to claim 1, characterized in that, The fixing mechanism includes two first fixing sleeves (9) for fixing the height of the forehead baffle (10) and two second fixing sleeves (14) for fixing the height of the chin support (8). The bracket (13) is provided with external threads (11). The inner walls of the first fixing sleeves (9) and the inner walls of the second fixing sleeves (14) are provided with internal threads. The two first fixing sleeves (9) are threaded to both ends of the bracket (13) respectively, and the two second fixing sleeves (14) are threaded to both ends of the bracket (13) respectively.

4. The assessment device for corneal removal volume in refractive surgery according to claim 1, characterized in that, The bottom side of the movable seat (2) has a groove, and a universal sleeve (16) is fixed on the inner wall of the groove. The inner wall of the universal sleeve (16) is movably provided with a universal ball (17) for supporting one end of the movable seat (2).

5. The assessment device for corneal removal volume in refractive surgery according to claim 2, characterized in that, The protective cover (12) is composed of a strip of cloth (7), a hook and loop fastener (15) and a loop fastener. One side of the hook and loop fastener (15) is sewn to one side of the strip of cloth (7), and one side of the loop fastener is sewn to one end of the strip of cloth (7). The hook and loop fastener (15) and the loop fastener are bonded together.

6. The assessment device for corneal removal volume in refractive surgery according to claim 1, characterized in that, The two frames (5) are provided with a moving groove (18) on the side that is close to each other. The two ends of the moving rod (6) are fixed with moving blocks, and one side of the moving block is slidably connected to the inner wall of the moving groove (18).

7. The assessment device for corneal removal volume in refractive surgery according to claim 1, characterized in that, The bottom of the base (1) is fixedly provided with a rubber pad (20) for anti-slip purposes when placed on a table, and the bottom of the rubber pad (20) is provided with anti-slip texture.

8. The assessment device for corneal removal volume in refractive surgery according to claim 1, characterized in that, The inner wall of the outer casing (4) is fitted with a conical Placido disk. Four lighting beads are evenly installed on the inner wall of the outer casing (4) at positions corresponding to the tip of the Placido disk. A lens and a CCD digital camera are provided on the inner rear surface of the outer casing (4).

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