Eyeball model for fundus examination

Abstract

The utility model discloses an eyeball model for fundus examination. The eyeball model is characterized by comprising a front shell, a rear shell and a fundus support, wherein the rear shell is in threaded connection with the outer side of the front shell, and the fundus support is buckled on the outer side of a vitreous body in the front shell through the rear shell and limited between the vitreous body and the rear shell. The utility model has the beneficial effects that 1, the fundus supports for different fundus diseases can be conveniently replaced so as to learn the examination of different fundus diseases; 2, the cornea, the iris, the pupil, the crystalline lens and the vitreous body are all limited in the front shell through the limiting rings, and the fundus support can be replaced simply and quickly only by dismounting and mounting the rear shell; and 3, a support frame is designed in the front shell, so that parts such as pupils and crystalline lenses can be conveniently positioned.

Description

Technical Field

[0001] The utility model belongs to an eyeball model, and particularly relates to an eyeball model for fundus examination. Background Art

[0002] Fundus examination is an indispensable part of ophthalmic examinations and an important window for understanding eye diseases and certain systemic diseases (such as central nervous system diseases, diabetes, hypertension, etc.). Therefore, it is very important for ophthalmologists to master fundus examination skills. The direct ophthalmoscope is the most classic, commonly used, and convenient fundus examination method in clinical practice and is also one of the skills that ophthalmic workers need to master first.

[0003] In addition, for the research and development and detection of fundus disease treatment equipment, an eyeball model is also required to detect the accuracy of the equipment for fundus disease examination.

[0004] In the prior art, for the learning methods of different fundus disease examinations, one is to replace the eyeball models of different fundus diseases, such as the technical solutions disclosed in patents such as CN 214279389 U; the other is to introduce a reflective film at the eyeball model, and through a control system, digital pictures of different diseased retinas are provided and output on the reflective film. No matter which of the above technical solutions is adopted, there are technical problems of high cost and complex equipment. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to provide an eyeball model for fundus examination, and by simply and conveniently replacing the fundus tray, it is convenient to examine and learn different fundus diseases.

[0006] To solve the above technical problem, the technical solution adopted by the present invention is: an eyeball model for fundus examination, characterized in that: it includes a front shell, a rear shell threadedly connected to the outside of the front shell, and a fundus tray that is buckled inside the front shell outside the vitreous body by means of the rear shell and is limited between the vitreous body and the rear shell.

[0007] Further, a limiting ring for limiting the vitreous body is threadedly connected to the inner side of the front shell, and an annular boss that cooperates with the limiting ring is provided on the vitreous body.

[0008] Further, a positioning groove is provided on the limiting ring, and a positioning boss that cooperates with the positioning groove is provided on the fundus tray.

[0009] Further, a through hole is provided at the end of the front shell, and a cornea, an iris, a pupil, and a lens are sequentially provided between the through hole and the vitreous body, and the cornea is limited in the through hole.

[0010] Further, a limiting boss for cooperating with the through hole is provided on the cornea.

[0011] Further, a limiting groove for limiting the iris is provided on the pupil.

[0012] Further, a support frame is provided in the front shell. The iris and the pupil are limited between the cornea and the support frame, and the lens is limited between the support frame and the vitreous body. A light-transmitting hole coaxial with the pupil is provided on the support frame.

[0013] Further, the light-transmitting hole is a tapered hole expanding towards the vitreous body.

[0014] Further, a limiting hole coaxial with the light-transmitting hole is provided on the support frame, and the pupil is located within the limiting hole.

[0015] Further, a receiving cavity coaxial with the light-transmitting hole is provided on the support frame, and the lens is located within the receiving cavity.

[0016] The beneficial effects of the present utility model are as follows: 1. It is convenient to replace the fundus holders for different fundus diseases for learning the examinations of different fundus diseases; 2. The cornea, iris, pupil, lens and vitreous body are all limited within the front shell by the limiting rings. When replacing the fundus holder, only the rear shell needs to be disassembled and installed, which is simple and fast; 3. A support frame is designed within the front shell to facilitate the positioning of components such as the pupil and the lens.

[0017] The present utility model will be described in detail below with reference to the accompanying drawings. Description of the Drawings

[0018] Figure 1 is a schematic structural view of the eyeball model for fundus examination of the present utility model;

[0019] Figure 2 is Figure 1 a cross-sectional view taken along the line A-A in

[0020] Figure 3 is Figure 2 a partial enlarged view at A in

[0021] Figure 4 is a schematic installation view of the fundus holder in the eyeball model for fundus examination of the present utility model;

[0022] Figure 5 is a schematic structural view of the front shell in the eyeball model for fundus examination of the present utility model;

[0023] Figure 6 is a cross-sectional view of the support frame in the eyeball model for fundus examination of the present utility model.

[0024] In the accompanying drawings, 1, front shell, 1-1, through hole, 2, back shell, 3, vitreous body, 3-1, annular boss, 4, fundus support, 4-1, positioning boss, 5, limiting ring, 5-1, positioning groove, 6, cornea, 6-1, limiting boss, 7, iris, 8, pupil, 8-1, limiting groove, 9, lens, 10, supporting frame, 10-1, light transmission hole, 10-2, limiting hole, 10-3, accommodating cavity. DETAILED DESCRIPTION

[0025] See attached Figures 1-6 The utility model provides an eyeball model for fundus examination, comprising a front shell 1 with a through hole 1-1 at the end, a rear shell 2 connected to the outer side of the front shell 1 by a thread, and a fundus holder 4 which is buckled on the outer side of the vitreous body 3 in the front shell 1 by means of the rear shell 2 and limited between the vitreous body 3 and the rear shell 2. A cornea 6, an iris 7, a pupil 8 and a lens 9 are arranged in sequence between the through hole 1-1 and the vitreous body 3, and the cornea 6 is limited in the through hole 1-1. When it is necessary to replace the fundus holder 4 with a different fundus disease pattern, it is only necessary to unscrew the rear shell and replace the fundus holder 4, which is convenient and quick, and all components in the front shell 1 are not affected.

[0026] See attached Figure 2 and 4 In order to prevent the vitreous body 3 from falling out of the front shell 1, a limiting ring 5 for limiting the vitreous body 3 is threadedly connected to the inner side of the front shell 1, and an annular boss 3-1 matching with the limiting ring 5 is provided on the vitreous body 3. One end (i.e., the outer side) of the vitreous body 3 passes through the limiting ring 5 and is located outside the front shell 1 so that the fundus support 4 can be conveniently buckled on the outer side of the vitreous body 3.

[0027] See attached Figure 4 In order to position the fundus support 4 at a specified position to prevent the fundus support 4 from rotating with the rear shell 2 during installation, a positioning groove 5-1 is provided on the limit ring 5, and a positioning boss 4-1 matching the positioning groove 5-1 is provided on the fundus support 4.

[0028] See attached Figure 2 and 3 A limiting boss 6-1 is provided on the cornea 6 for cooperating with the through hole 1-1 to form a limiting structure.

[0029] A limiting groove 8 - 1 for limiting the position of the iris 7 is provided on the pupil 8 , and one side of the iris 7 is limited to the inner side of the cornea 6 , and the other side is limited to the limiting groove 8 - 1 .

[0030] See attached Figure 2 and 6, a support frame 10 is provided inside the front shell 1 to facilitate the installation and positioning of associated components. The iris 7 and the pupil 8 are positioned between the cornea 6 and the support frame 10, and the lens 9 is positioned between the support frame 10 and the vitreous body 3. A light-transmitting hole 10-1 coaxial with the pupil 8 is provided on the support frame 10. The light-transmitting hole 10-1 is a tapered hole expanding towards the vitreous body 3 to facilitate the positioning of the lens 9. A limiting hole 10-2 coaxial with the light-transmitting hole 10-1 is provided on the support frame 10, and the pupil 8 is located inside the limiting hole 10-2. A receiving cavity 10-3 coaxial with the light-transmitting hole 10-1 is provided on the support frame 10, and the lens 9 is located inside the receiving cavity 10-3.

[0031] When installing the eye model of the present utility model, first install the iris 7 in the limiting groove 8-1 of the pupil 8, and then install the pupil 8 in the limiting hole 10-2 of the support frame 10; place the cornea 6, the support frame 10 with the iris 7 and the pupil 8, the lens 9 and the vitreous body 3 in the front shell 1 in sequence, and then install the limiting ring 5. The installation and positioning of the above components are realized through the threaded connection between the limiting ring 5 and the front shell 1.

[0032] When the fundus support 4 needs to be installed, snap the fundus support 4 outside the vitreous body 3 and position the positioning boss 4-1 thereon in the positioning groove 5-1, and then tighten the rear shell 2 on the front shell 1. When it is necessary to replace the fundus support 4 for the examination of different fundus diseases, only need to remove the rear shell 2, replace the fundus support 4 for different fundus diseases, and then install and tighten the rear shell 2 again.

[0033] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them; although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: it is still possible to modify the specific implementation manners of the present utility model or perform equivalent replacements for some technical features; without departing from the spirit of the technical solutions of the present utility model, they should all be covered within the scope of the technical solutions claimed by the present utility model.

Claims

1. An eyeball model for fundus examination, characterized in that: It comprises a front shell (1), a rear shell (2) connected to the outer side of the front shell (1) by means of a thread, and a fundus support (4) which is fastened to the outer side of a vitreous body (3) in the front shell (1) by means of the rear shell (2) and is limited between the vitreous body (3) and the rear shell (2).

2. The eyeball model for fundus examination according to claim 1, characterized in that: A limiting ring (5) for limiting the position of the glass body (3) is threadedly connected to the inner side of the front shell (1), and an annular boss (3-1) matching the limiting ring (5) is provided on the glass body (3).

3. The eyeball model for fundus examination according to claim 2, characterized in that: A positioning groove (5-1) is provided on the limiting ring (5), and a positioning boss (4-1) matching with the positioning groove (5-1) is provided on the fundus support (4).

4. The eyeball model for fundus examination according to any one of claims 1 to 3, characterized in that: A through hole (1-1) is provided at the end of the front shell (1); a cornea (6), an iris (7), a pupil (8) and a lens (9) are provided in sequence between the through hole (1-1) and the vitreous body (3); and the cornea (6) is positioned within the through hole (1-1).

5. The eyeball model for fundus examination according to claim 4, characterized in that: A limiting boss (6-1) for cooperating with the through hole (1-1) is provided on the cornea (6).

6. The eyeball model for fundus examination according to claim 4, characterized in that: A limiting groove (8-1) for limiting the position of the iris (7) is provided on the pupil (8).

7. The eyeball model for fundus examination according to claim 4, characterized in that: A support frame (10) is provided in the front shell (1); the iris (7) and the pupil (8) are positioned between the cornea (6) and the support frame (10); the lens (9) is positioned between the support frame (10) and the vitreous body (3); and a light-transmitting hole (10-1) is provided on the support frame (10) and is coaxial with the pupil (8).

8. The eyeball model for fundus examination according to claim 7, characterized in that: The light-transmitting hole (10-1) is a cone hole that expands toward the vitreous body (3).

9. The eyeball model for fundus examination according to claim 7, characterized in that: A limiting hole (10-2) coaxially arranged with the light-transmitting hole (10-1) is provided on the support frame (10), and the pupil (8) is located in the limiting hole (10-2).

10. The eyeball model for fundus examination according to claim 7, characterized in that: The support frame (10) is provided with a receiving cavity (10-3) coaxially arranged with the light-transmitting hole (10-1), and the lens (9) is located in the receiving cavity (10-3).

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