CN214796450U

CN214796450U - Eyeball model

Info

Publication number: CN214796450U
Application number: CN202121104461.5U
Authority: CN
Inventors: 郝敬冬
Original assignee: Suzhou Yishihe Medical Technology Co ltd
Current assignee: Suzhou Yishihe Medical Technology Co ltd
Priority date: 2021-05-21
Filing date: 2021-05-21
Publication date: 2021-11-19
Anticipated expiration: 2031-05-21

Abstract

The utility model aims at disclosing a medical eyeball model for simulating the optical characteristics of eyes, which comprises a cornea, an upper eyeball wall and a lower eyeball wall, wherein after the cornea, the upper eyeball wall and the lower eyeball wall are spliced, a cavity is formed among the cornea, the upper eyeball wall and the lower eyeball wall, a transparent filler is filled in the cavity, and the model also comprises an injection hole arranged on the lower eyeball wall; the cornea is a concave-convex lens, and the surface curvature and the refractive index of the concave-convex lens are the same as those of the cornea of the eye; the size of the upper eyeball wall, the size of the lower eyeball wall and the size of the inner surface of the lower eyeball wall are the same as that of the inner surface of the eyeball wall, and retina patterns are arranged; the injection hole is used for injecting transparent filler into the cavity; the transparent filler is a flowing liquid before injection, and is solidified into a transparent solid substance after being injected into the cavity, so that the eyeball model has no problem that the use is influenced by bubbles and the like, and the eyeball model has optical characteristics close to real eyeballs.

Description

Eyeball model

Technical Field

The utility model relates to a medical eyeball model, in particular to an eyeball model simulating the optical characteristics of eyes.

Background

The simulated eyeball is a model with similar eye optical characteristics, the corneal curvature, refractive index of refraction medium and the like of the simulated eyeball are very close to the parameters of a real eyeball, and the simulated eyeball is usually used for simulation shooting in medical teaching activities and the research and development test stage of a fundus camera. One commonly used eyeball model is a liquid injection eyeball model, transparent oil liquid with a refractive index similar to that of a vitreous body is injected into a simulated eyeball shell, and an oil liquid injection opening is sealed by a screw. Compared with a non-liquid injection type eyeball model, the liquid injection type eyeball model has the optical characteristics closer to a real eyeball, and is widely applied to fundus camera testing and medical personnel practicing operation.

However, after the liquid injection eyeball model is used for a period of time, due to the fact that temperature changes cause expansion and contraction of oil, bubbles are prone to floating in the oil, and particularly after air transportation and carrying, the bubbles can be generated at a high probability due to air pressure changes and need to be repaired by professionals. In medical teaching activities or eyeground camera research and development tests, when the interior of an eyeball model is observed through a cornea, air bubbles can appear in an observation light path, and the interior of a real eye is free of air bubbles, so that the air bubbles can influence normal observation and even misguide a user.

Disclosure of Invention

The to-be-solved technical problem of the utility model lies in that, to the above-mentioned defect of prior art, provide an eyeball model.

The utility model provides a technical scheme that its technical problem adopted is:

constructing an eyeball model, namely a cornea, an upper eyeball wall and a lower eyeball wall, wherein after the cornea, the upper eyeball wall and the lower eyeball wall are spliced, a cavity is formed among the cornea, the upper eyeball wall and the lower eyeball wall, and a transparent filler is filled in the cavity;

the cornea is a concave-convex lens, and the surface curvature and the refractive index of the concave-convex lens are the same as those of the cornea of the eye;

the sizes of the upper eyeball wall, the lower eyeball wall and the inner surface are the same as the size of the inner surface of the eyeball wall, and retina patterns are arranged;

the transparent filler is a flowing liquid before injection, and is solidified into a transparent solid substance after being injected into the cavity;

the injection hole is used for injecting transparent filler into the cavity.

As a further aspect of the present invention: the cornea, the upper eye wall and the lower eye wall are bonded together with an adhesive, the three parts bonded together being coaxial.

The invention has the beneficial effects that: the curable transparent filler used in the invention is used as a refraction medium, has simple structure and simple assembly, does not generate bubbles to prevent normal use, is firm and durable, has the appearance and optical structure close to a real eyeball, and ensures high simulation degree in medical teaching and fundus camera test.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only part of the embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive efforts according to the accompanying drawings:

fig. 1 is a front view of an eyeball model provided by the invention;

FIG. 2 is a cross-sectional view of the eyeball model without filling material injected therein;

FIG. 3 is a cross-sectional view of the eyeball model after being filled with filler and solidified;

figure 1-cornea; 2-upper eye wall; 3-lower eye wall; 4-a cavity; 5-a filler; 6-injection hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, a complete description will be given below with reference to the technical solutions of the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without inventive step, are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified and limited, the term "joining" is to be understood in a broad sense, for example, it may be a glue bond or an ultrasonic weld; may be a mechanical structural connection. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-3, an eyeball model comprises a cornea 1, an upper eyeball wall 2 and a lower eyeball wall 3, wherein after the cornea 1, the upper eyeball wall 2 and the lower eyeball wall 3 are spliced, a cavity 4 is formed among the cornea 1, the upper eyeball wall 2 and the lower eyeball wall 3, a transparent filler 5 is filled in the cavity 4, and an injection hole 6 is arranged on the lower eyeball wall 3;

the cornea 1 is a meniscus lens, and the radius of curvature and refractive index of the inner and outer surfaces are the same as those of the cornea of the eye. Concave-convex lenses with different curvature radiuses on the inner surface can be selected to manufacture eyeball models with different refractive powers to simulate normal eyeballs, myopic eyes and hyperopic eyes.

The upper eyeball wall 2 and the lower eyeball wall 3 are made of white opaque materials, can be manufactured by mechanical cold machining, injection molding, or the manufacturing process structure of mechanical cold machining and injection molding, and the size of the inner surface is the same as that of the inner surface of the eyeball wall; the upper and lower eye walls are provided with a retinal pattern, which may be painted, or a film may be applied, and in this embodiment, the retinal pattern is painted, and the coating does not dissolve in the uncured transparent filler.

The cornea 1, the upper eyeball wall 2 and the lower eyeball wall 3 are coaxially arranged, in the embodiment, the three are bonded together by using epoxy resin, and a complete sealing line is formed at the joint part, so that when liquid transparent filler is injected, the filler is prevented from leaking from the joint part.

In the embodiment, two-component transparent epoxy resin is used as the filler 5, the epoxy resin is injected into the cavity 4 from the injection hole 6 by using a syringe to fill the whole cavity, the eyeball model is placed into a vacuum defoaming box to be defoamed, and after the epoxy resin is naturally cured, the injection hole is blackened by using black paint to prevent external light from entering the interior of the eyeball from the injection hole.

Compared with the prior art, the utility model discloses an eyeball model possesses the lifelike optical characteristic of notes liquid formula eyeball model, and its solidifiable transparent filler has guaranteed can not produce the bubble and influence normal use in air transportation and use.

Claims

1. An eye model, comprising: the cornea (1), the upper eyeball wall (2) and the lower eyeball wall (3) are spliced, a cavity (4) is formed among the cornea (1), the upper eyeball wall (2) and the lower eyeball wall (3), a transparent filler (5) filled in the cavity (4) is filled in the cavity, and the cornea and eye protection;

the cornea (1) is a concave-convex lens, and the refractive index of the concave-convex lens is the same as that of the cornea of the eye;

the sizes of the upper eyeball wall (2), the lower eyeball wall (3) and the inner surface are the same as the size of the inner surface of the eyeball wall;

the transparent filler (5) is a flowing liquid before injection and is solidified after injection into the cavity;

the injection hole (6) is used for injecting transparent filler (5) into the cavity (4).

2. An eye model according to claim 1, characterized in that the transparent filling (5) comprises epoxy.

3. An eye model according to claim 1, characterized in that the transparent filling (5) comprises UV glue.

4. An eye model according to claim 1, characterized in that the transparent filling (5) comprises silicone.

5. An eye model according to claim 1, wherein the refractive index of the transparent filler (5) after curing is the same as the refractive index of the vitreous body of the human eye.

6. An eye model according to claim 1, characterized in that the lower eye wall (3) and the upper eye wall (2) are made of a white opaque material.

7. An eyeball model according to claim 6, characterized in that the retina pattern is arranged inside the upper eyeball wall (2) and the lower eyeball wall (3).

8. An eye model according to claim 1, wherein the radius of curvature of the inner surface of the cornea (1) can be varied to simulate eyes of different powers.