Hydrophobic double-ring target-shaped implant for treating corneal edema

Abstract

The utility model discloses a hydrophobic double-circle ring target-shaped implant for treating corneal edema, which relates to the technical field of ophthalmology, and comprises a hydrophobic implant, an inner piece is arranged on the hydrophobic implant, an outer piece is arranged outside the inner piece, and the outer piece is arranged outside the outer piece. At least two oxygen permeation holes are formed in the outer piece, the diameter of the inner piece ranges from 5.5 mm to 7 mm, and the diameter of the outer piece ranges from 8 mm to 9.5 mm. The outer piece is additionally arranged on the periphery of the inner piece, so that the area of the hydrophobic implant is enlarged, the target-shaped implant is formed, the cornea inner skin surface or the cornea interlayer matrix surface is covered as much as possible, the water blocking area is enlarged, cornea epithelium blisters in the peripheral area are eliminated, and discomfort such as eye grind is avoided; water permeation and oxygen permeation are carried out to ensure that nutrient substances enter the cornea and avoid corneal tissue hypoxia necrosis, and in order to ensure the stability of the hydrophobic implant in the implanting process, the edge of the oxygen permeation hole is in a round and blunt shape.

Description

Technical Field

[0001] The utility model relates to the technical field of ophthalmology, in particular to a hydrophobic double-ring target-shaped implant for treating corneal edema. Background Art

[0002] The visual function of the eye depends mainly on the transparency of the cornea, lens, vitreous body, as well as the function of the retina, optic nerve, and other factors. Corneal transplantation is a surgical treatment method usually used to repair or replace damaged or disease-affected corneal tissue in the patient's eye.

[0003] At present, the existing corneal implants (such as patent number: CN219983199U) disclose an interlayer implantable hydrophobic implant for treating corneal edema. The application is for an interlayer implantable hydrophobic implant for treating corneal edema and a method of use. The implant may have one or more holes to facilitate material communication, which will play an important role in nourishing the cornea but will not cause corneal edema.

[0004] However, during the implementation of the above technical solution, it was found that there were at least the following technical problems:

[0005] 1. The diameter of the existing implant is about 6.5mm, and the area is small. The surrounding cornea is in a state of edema, and small blisters can be seen under the corneal epithelium, causing discomfort such as red eyes and eye irritation;

[0006] 2. If the diameter of the central implant is too large, it will lead to malnutrition of corneal tissue, dissolution and necrosis of the matrix. The existing artificial corneal endothelial product design has not yet solved the above clinical problems. Utility Model Content

[0007] 1. Technical issues to be resolved

[0008] In view of the deficiencies in the prior art, the utility model provides a hydrophobic double-ring target-shaped implant for treating corneal edema, which solves the technical problems that the prior implant is large, the surrounding cornea is in a state of edema, and small blisters under the corneal epithelium are visible, leading to discomfort such as red eyes and eye irritation.

[0009] (II) Technical solution

[0010] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0011] A hydrophobic double-ring target-shaped implant for treating corneal edema comprises a hydrophobic implant, an inner sheet is arranged on the hydrophobic implant, an outer sheet is arranged outside the inner sheet, and at least two oxygen permeable holes are opened on the outer sheet.

[0012] Preferably, the diameter of the inner sheet is 5.5 mm-7 mm.

[0013] Preferably, the diameter of the outer sheet is 8mm-9.5mm.

[0014] Preferably, the edge of the oxygen permeable hole is rounded.

[0015] Preferably, the edge of the outer sheet is made thin.

[0016] Preferably, the hydrophobic implant can be placed on the corneal endothelium or between the corneal stroma layers.

[0017] (III) Beneficial effects

[0018] 1. The present application expands the area of ​​the hydrophobic implant by adding an outer sheet to the periphery of the inner sheet, forming a target-shaped implant that covers the corneal endothelial surface or the corneal interlayer matrix surface as much as possible, increases the area for blocking water, eliminates corneal epithelial blisters in the peripheral area, and avoids discomfort such as eye grinding.

[0019] 2. The present application provides oxygen permeable holes for water and oxygen permeability to ensure that nutrients enter the cornea and avoid tissue hypoxia and necrosis. The edges of the oxygen permeable holes are rounded and blunt, which can reduce the tearing of the hydrophobic implant during the implantation process.

[0020] 3. In the present application, the edge material of the outer piece is set to be thinner, so that the thin edge can better match the shape and curvature of the cornea, improve the fit and stability of the hydrophobic implant and the cornea, and at the same time reduce the squeezing of the outer piece edge on the chamber angle to prevent peripheral anterior iris adhesion. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.

[0022] Figure 1 This is a structural diagram of the hydrophobic implant of the utility model.

[0023] Legend: 1. Hydrophobic implant; 2. Outer sheet; 3. Inner sheet; 4. Oxygen permeable hole. DETAILED DESCRIPTION

[0024] The embodiment of the present application provides a hydrophobic double-ring target-shaped implant for treating corneal edema, which effectively solves the technical problem that the existing implant is large, the surrounding cornea is in a state of edema, small blisters under the corneal epithelium are visible, and discomfort such as red eyes and eye grinding is caused. By adding an outer sheet on the periphery of the inner sheet, the area of ​​the hydrophobic implant is expanded to form a target-shaped implant, which covers the corneal endothelial surface or the corneal interlayer matrix surface as much as possible, increases the area for blocking water, eliminates corneal epithelial blisters in the peripheral area, and avoids discomfort such as eye grinding.

[0025] Example

[0026] like Figure 1 As described above, the technical solution in the embodiment of the present application is to effectively solve the technical problem that the existing implant is large, the surrounding cornea is in an edematous state, and small blisters under the corneal epithelium can be seen, which leads to discomfort such as red eyes and eye grinding. The overall idea is as follows: a hydrophobic double-ring target-shaped implant for treating corneal edema, including a hydrophobic implant 1, an inner sheet 3 is provided on the hydrophobic implant 1, an outer sheet 2 is provided outside the inner sheet 3, and at least two oxygen permeable holes 4 are opened on the outer sheet 2, and the oxygen permeable holes 4 are opened to allow water and oxygen to pass through to avoid tissue hypoxia and necrosis;

[0027] The diameter of the inner sheet 3 is 5.5mm-7mm, and the diameter of the outer sheet 2 is 8mm-9.5mm. The outer sheet 2 is provided on the periphery of the inner sheet 3, so as to expand the area of ​​the hydrophobic implant 1 and form a target-shaped implant, which covers the corneal endothelial surface or the corneal interlayer matrix surface as much as possible, increases the water blocking area, eliminates corneal epithelial blisters in the peripheral area, and avoids discomfort such as eye grinding;

[0028] The edge material of the outer piece 2 is set to be thinner, so that the thin edge can better match the shape and curvature of the cornea, improve the fit and stability of the hydrophobic implant 1 and the cornea, and at the same time reduce the squeezing of the edge of the outer piece 2 on the chamber angle to prevent peripheral anterior iris adhesion; if necessary, combined lens removal is required to deepen the anterior chamber to prevent peripheral anterior iris adhesion.

[0029] In view of the problems existing in the prior art, the utility model provides a hydrophobic double-ring target-shaped implant for treating corneal edema. By adding an outer sheet to the outer periphery of an inner sheet, the area of ​​the hydrophobic implant is expanded to form a target-shaped implant, which covers the corneal endothelial surface or the corneal interlayer matrix surface as much as possible, increases the area for blocking water, eliminates corneal epithelial blisters in the peripheral area, and avoids discomfort such as eye grinding.

[0030] Working principle:

[0031] The hydrophobic implant 1 in the present application can be placed on the corneal endothelium or between the corneal stroma layers. Different implantation locations use different methods. The corneal endothelium implantation process includes the following steps:

[0032] The first step is to implant the hydrophobic implant 1 into the anterior chamber;

[0033] The second step is to use gas to press the hydrophobic implant 1 against the corneal endothelial surface;

[0034] The interlaminar corneal implant procedure involves the following steps:

[0035] In the first step, a cavity is separated in front of the deep matrix or Descemet's membrane by using femtosecond laser, freehand dissection, large bubble technique, etc.

[0036] The second step is to implant the hydrophobic implant 1 into the cavity so that the hydrophobic implant serves as a waterproof layer to dehydrate the cornea;

[0037] Based on the above steps, first, the diameter of the inner sheet 3 of the existing implant is about 6.5 mm, and its area is small. The surrounding cornea is in an edematous state, which causes discomfort such as red eyes, eye grinding, photophobia, and tearing, affecting the quality of life. The small area of ​​the implant and the edema of the surrounding cornea may reduce the stability of the implant. The edema causes the surrounding tissue to swell, increasing the gap between the implant and the surrounding tissue, which may cause the implant to shift, twist or fall off. The present application adds an outer sheet 2 to the periphery of the inner sheet 3, expands the area of ​​the hydrophobic implant 1, and forms a target-shaped implant, which covers the corneal endothelial surface or the corneal interlayer matrix surface as much as possible, increases the area of ​​water blocking, eliminates corneal epithelial blisters in the surrounding area, and avoids discomfort such as eye grinding. At the same time, an oxygen permeable hole 4 is opened for water and oxygen permeability to ensure that nutrients enter the cornea and avoid tissue hypoxia and necrosis;

[0038] Secondly, the material of the hydrophobic implant 1 in the present application is a hydrophobic material. The hydrophobic material can reduce or prevent the adsorption and penetration of substances such as water, body fluids and cells on its surface, thereby reducing the side effects of the hydrophobic implant 1 on the surrounding tissues and improving its functionality. The material used for the hydrophobic implant 1 can be a polymer material, such as polymethyl methacrylate, acrylic hydrogel, hydroxyethyl methacrylate, polyvinyl alcohol, etc. These polymer materials have low surface energy and high surface tension, so that they show hydrophobic properties; silicon-based materials, silicon-based materials can achieve hydrophobic properties through surface nano-structuring, chemical modification and other methods, such as materials modified with silicon oxide nanoparticles, which have a hydrophobic effect. Any material that has a hydrophobic effect and is suitable for use in the hydrophobic implant 1 can be used;

[0039] In the present application, the edge material of the outer sheet 2 is set to be thinner, so that the thin edge can better match the shape and curvature of the cornea, improve the fit and stability of the hydrophobic implant 1 and the cornea, and at the same time reduce the squeezing of the edge of the outer sheet 2 on the chamber angle, and prevent the occurrence of peripheral anterior iris adhesion;

[0040] Finally, any point on the hydrophobic implant 1 is no more than 3 mm away from the edge, and at least two oxygen holes 4 are opened on the outer sheet 2, and the edges of the oxygen holes 4 are rounded. The rounded edges of the oxygen holes 4 can reduce the tearing of the hydrophobic implant 1 during the implantation process.

[0041] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A hydrophobic double ring target-shaped implant for treating corneal edema, comprising a hydrophobic implant (1), characterized in that: The hydrophobic implant (1) is provided with an inner sheet (3), an outer sheet (2) is provided outside the inner sheet (3), at least two oxygen permeable holes (4) are provided on the outer sheet (2), the diameter of the outer sheet (2) is 8 mm-9.5 mm, and the edge of the outer sheet (2) is configured to become gradually thinner.

2. A hydrophobic double ring target-shaped implant for treating corneal edema as claimed in claim 1, characterized in that: The diameter of the inner sheet (3) is 5.5 mm-7 mm.

3. A hydrophobic double ring target-shaped implant for treating corneal edema as claimed in claim 1, characterized in that: The edges of the oxygen permeable holes (4) are rounded.

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