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Non-biological artificial cornea and installation method

An artificial cornea, non-biological technology, applied in the direction of eye implants, etc., can solve the problems of inability to set up, limited operating space, fixed foot human cornea adjustment, etc., to prevent the entry of bacteria and the loss of fluid, and reduce the risk of exposure , beneficial to the effect of surgical operation

Pending Publication Date: 2022-07-29
姚晓明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the anastomosis between the optical mirror column and the implant hole is not tightly sealed, it is easy to cause aqueous humor leakage and intraocular infection, which will lead to the failure of artificial corneal transplantation
In addition, the side of the optical mirror column is a smooth arc surface, which is joined with the implant hole in a way of interference fit. The optical mirror column is easy to fall out under the action of intraocular pressure. The structure of the mirror column protrudes, but due to the limited operating space in the eye, the surgical operation is limited and it is impossible to set up a too complicated structure
[0004] Among the existing solutions, the patent with the publication number CN111419471A discloses the existing Boston type I artificial cornea and a kind of artificial cornea with fixed feet. The Boston type I artificial cornea prevents prolapse by setting a C-shaped ring on the central optical part. However, since the C-shaped ring is not closed and there is a gap, there is a risk of aqueous humor leakage. Although the artificial cornea with fixed feet has a rough surface on the side of the central optical part, the fixed feet cannot be optimally adjusted to the human cornea. , there is still a risk of aqueous humor leakage if the combination is not tight enough, so an artificial cornea that can prevent prolapse and be flexibly adjusted is needed to avoid waterproof leakage

Method used

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  • Non-biological artificial cornea and installation method
  • Non-biological artificial cornea and installation method
  • Non-biological artificial cornea and installation method

Examples

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Effect test

Embodiment 1

[0034] like figure 1 , 2 , 3, a non-biological artificial cornea includes: an optical mirror column 1 and an umbrella-shaped wing 2, the optical mirror column 1 is arranged in the opening in the center of the umbrella-shaped wing 2, and the artificial cornea also includes a movable setting The special-shaped fixing ring 3 on the optical mirror column 1 is provided with a thread 11 on the outer side wall of the optical mirror column 1, and a threaded hole 31 is arranged in the middle of the special-shaped fixing ring 3 to cooperate with the thread 11 of the optical mirror column 1, so The peripheral edge of the upper surface of the optical mirror column 1 is provided with an extension portion 12 extending to the upper surface of the umbrella-shaped wing 2 , and the extension portion 12 is attached to the upper surface of the umbrella-shaped wing 2 .

[0035] like image 3 , 4 As shown, the special-shaped fixing ring 3 has a pair of parallel sides 32, and the parallel sides 3...

Embodiment 2

[0043] like figure 2 As shown, this embodiment is basically the same as the above-mentioned embodiment, the difference is that the arc radius of the upper surface of the optical mirror column 1 is 6-8 mm, and the arc radius of the upper surface of the extension part 12 is 13-16 mm. Preferably, the arc radius of the upper surface of the optical mirror column 1 is 6.92 mm, and the arc radius of the upper surface of the extension portion 12 is 14.4 mm. The radian radius refers to the radius of the circle where the arc on the arc surface is located.

[0044] The normal human cornea is a concentric circle in the front and back, which plays the role of allowing light to enter the eyeball. The optical mirror column 1 and the extension portion 12 in this embodiment can form the effect of a convex lens through the setting of the above-mentioned arc radius, which can replace The lens plays the role of refracting light, so that the artificial cornea of ​​the present invention can not o...

Embodiment 3

[0046] like figure 1 , 3 As shown, this embodiment is basically the same as the above-mentioned embodiment, the difference is that at least one reserved hole 21 is provided on the umbrella wing 2 at a distance of 2 to 4 mm from the edge of the extension portion 12, and the reserved hole 21 The diameter is 0.7 to 2 mm. Preferably, at least one reserved hole 21 is provided on the umbrella wing 2 at a distance of 3 mm from the edge of the extension portion 12. The diameter of the reserved hole 21 is 1 mm. The function is to reserve enough space for fundus surgery for patients who have undergone corneal transplantation, and to reserve a large enough access in advance to facilitate the entry of surgical instruments. organize.

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Abstract

The invention discloses a non-biological type artificial cornea and an installation method, belongs to the technical field of artificial corneas, and aims to solve the problems that an existing artificial cornea is insufficient in sealing and difficult to flexibly adjust. The artificial cornea comprises an optical lens column and an umbrella-shaped wing, the optical lens column is arranged in an opening in the center of the umbrella-shaped wing, and the special-shaped fixing ring is movably arranged on the optical lens column; threads are arranged on the outer side wall of the optical lens column, a threaded hole matched with the threads of the optical lens column is formed in the middle of the special-shaped fixing ring, an extension part extending to the upper surface of the umbrella-shaped wing is arranged on the periphery of the upper surface of the optical lens column, and the extension part is attached to the upper surface of the umbrella-shaped wing. The beneficial effects are that through cooperation of the optical lens column and the special-shaped fixing ring, flexible adjustment can be carried out according to cornea thicknesses of different patients so as to achieve a good sealing state, bacteria are prevented from entering and fluid loss is prevented, and the success rate of transplantation operation is increased; and the concave part on the optical lens column is matched with the parallel edge of the special-shaped fixing ring and a surgical instrument, so that surgical operation can be effectively facilitated.

Description

technical field [0001] The invention belongs to the technical field of artificial cornea, and particularly relates to a non-biological artificial cornea and an installation method. Background technique [0002] Artificial cornea is a special refractive device made of artificial synthetic materials, which is used to replace the cloudy human cornea that obstructs the optical path of the eyeball after lesions, so that patients can obtain certain vision. [0003] Most of the existing artificial corneas adopt a structural design in which an optical mirror column cooperates with a peripheral bracket, and the optical mirror column is limited and fixed on the implant bed through the peripheral bracket. Because the anastomosis between the optical mirror column and the implant hole is not tightly sealed, it is easy to cause aqueous humor leakage and intraocular infection, which leads to the failure of artificial corneal transplantation. In addition, the side of the optical mirror col...

Claims

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Application Information

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IPC IPC(8): A61F2/14
CPCA61F2/142A61F2/148
Inventor 姚晓明齐卫孙良南
Owner 姚晓明
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