Corneal lamellar cutter and surgical blade thereof

A technology of corneal layer and cutter, applied in the field of surgical blade, corneal layer cutter and the blade equipped with the cutter, which can solve the problems of epithelial tissue damage, danger, damage, etc.

Inactive Publication Date: 2010-05-05
格鲍尔有限及两合公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Of course, there are the following problems in dripping alcohol: first, alcohol must not reach the connective tissue next to the cut epithelium during treatment, because this will cause great pain to the patient
Also it is unclear how deeply the alcohol penetrates the corneal tissue and what kind of damage it would cause; but what is certain is that the use of alcohol is defi

Method used

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  • Corneal lamellar cutter and surgical blade thereof
  • Corneal lamellar cutter and surgical blade thereof
  • Corneal lamellar cutter and surgical blade thereof

Examples

Experimental program
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Embodiment Construction

[0023] figure 1 A corneal lamellar cutter 1 is shown in , which is also commonly used in current LASIK methods. Since lamellar cutters are known per se, only those important features associated with the present invention will be discussed below. Furthermore, regarding the structure of the corneal lamellar cutter, reference can be made, for example, to EP-A-0873735A1. The lamellar cutter comprises a cutting head 2 with a surgical blade or knife 3 . A flat surface is arranged at the front end of the cutter head 2 4. It has a transparent sheet with crossed lines drawn on it. The flat surface 4 is used to place the cornea ( Figure 5 In the cornea 14), wherein the cutter head 2 is mounted on a (not shown) suction ring, which is fixed on the eye. Via the flat surface 4 , a defined pressure can be exerted on the cornea, which has a favorable effect on cutting with the knife 3 .

[0024] refer to figure 2 , on the side of the tool head 2 there is provided a receiving openin...

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PUM

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Abstract

The present invention relates to one kind of laminated cornea cutter for use in LASEK process and one kind of cutter with blade in limited dullness for the laminated cornea cutter. During LASEK process, the epithelium is not softened with alcohol solution and is cut down with the laminated cornea cutter until leaving one hinge. The blade of the cutter has one limited dullness lent the Bowman's membrane should not be damaged during cutting epithelium. The blade has one cutting angle within 28-35 deg, one back angle within 0-4 deg and one tip radius of 150-800 nm.

Description

technical field [0001] The present invention relates to a corneal laminar cutter (Mikrokeratom) and a surgical blade for the corneal lamellar cutter. The present invention particularly relates to a kind of corneal laminar cutter and the blade that is equipped with this cutter, although this blade is used according to LASIK (laser in situ keratomileusis) method, but it has LASEK (excimer laser on The advantages of the subflap keratomileusis) approach without retaining its disadvantages. The LASIK method and the LASEK method will be briefly explained below. Background technique [0002] The so-called LASIK method (LASer In-situ-Keratomileusis) is an ophthalmic surgery method that uses excimer laser to correct abnormal eyesight. This is the most commonly used method at present. In the LASIK method, a corneal flap approximately 150-160 μm thick is cut from the cornea of ​​the eye. This is done with the help of a lamellar cutter (special cutting device). Although the entire c...

Claims

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Application Information

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IPC IPC(8): A61F9/007
Inventor 德特勒夫·P·格鲍尔
Owner 格鲍尔有限及两合公司
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