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Cornea implant

A technology of implants and corneas, applied in eye implants, medical science, prostheses, etc., can solve problems such as difficulties in opening corneal pockets

Inactive Publication Date: 2009-04-01
阿尔贝特·达克瑟尔
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In other words, a sufficiently flexible corneal implant known from the prior art facilitates its introduction into the corneal pocket through a narrow channel, but at the same time allows easy deployment in the corneal pocket. difficulty

Method used

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  • Cornea implant
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Embodiment Construction

[0054] as in figure 1 As can be seen in the figure, a corneal implant according to the invention comprises an annular base body 5 having a front convex surface 1 and a rearward concave surface 2 . The concavity of the rear facing surface 2 can be formed spherically or aspherically, for example by approximation by means of a plurality of spherically curved surfaces. The center of curvature 3 of the radius of curvature 10 of the two rearward facing surface sections 2a, 2b is preferably arranged along the axis 4 of the corneal implant according to the invention. In the aspheric rear surface a plurality of centers of curvature 3 are arranged along an axis 4 which corresponds to the optical axis.

[0055] This not only achieves an optimal adaptation of the rear surface of the ring to the implantation bed and prevents deposits on the critical surface and pressure degradation in the tissue, but also significantly increases the deformability of the ring without reducing the adjustmen...

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Abstract

The invention relates to an annular cornea implant (5) for inserting into a cornea pocket of the human eye via a narrow, tunnel-shaped access, the end form of the cornea implant depending on the short-sightedness or astigmatism to be corrected. The aim of the invention is to enable the cornea implant to be implanted in the cornea pocket in a simple manner and in an optimum position. To this end, the implant has a shape memory which is impressed on the basis of the geometry and / or material of the implant, and is designed in such a way that the deformability from a starting shape enables the insertion of the cornea implant into the cornea pocket via the narrow access, and the cornea implant has an adjustment force in the end shape thereof, which enables an essentially independent unfolding of the cornea implant in the cornea pocket.

Description

technical field [0001] The present invention relates to an annular corneal implant for introduction into the corneal pocket of the human eye through a narrow, preferably tunnel-shaped passage, wherein the final shape of the corneal implant depends on the vision abnormality to be corrected. Background technique [0002] The optical organ of the eye for imaging the environment consists essentially of the cornea and the lens behind the iris. The optical organ of the eye has a total refractive power of about 60 diopters, wherein the critical plane between the cornea and the air, the outer boundary of the eye, provides the main amount with about 40 diopters. The refractive power of the cornea is substantially indirectly proportional to the radius of the front face of the cornea (the critical plane between the cornea and the air). Thus by changing the radius of the cornea the refractive power of the eye can also be changed. For example, an increase in the (central) corneal radiu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/14
CPCA61F2210/0014A61F2/147
Inventor 阿尔贝特·达克瑟尔
Owner 阿尔贝特·达克瑟尔
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