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Devices and methods for making incisions in human cornea

A technology of human cornea and incision, applied in ophthalmic surgery, laser surgery, etc., can solve problems such as obstructing collection

Active Publication Date: 2017-08-11
ALCON INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has been found that the accumulation of gas resident in the cornea that occurs during the preparation of the flap can hinder the acquisition by the eye tracker of such features indicative of the properties of the eye

Method used

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  • Devices and methods for making incisions in human cornea
  • Devices and methods for making incisions in human cornea
  • Devices and methods for making incisions in human cornea

Examples

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Embodiment Construction

[0031] Referring now to the drawings, example embodiments of the disclosed apparatus and methods are shown in detail. The following description is in no way intended to be exhaustive, or to otherwise limit or limit the appended claims to the specific embodiments shown in the figures and disclosed herein. Although the figures represent possible embodiments, the figures are not necessarily drawn to scale and certain features may be simplified, exaggerated, removed or partially separated to better illustrate the embodiments. Additionally, some of the figures may be in schematic form.

[0032] figure 1 An example embodiment of a device 10 configured to form a corneal flap is shown. In this embodiment, apparatus 10 includes a laser device and a controlling computer. A laser device that uses ultrashort pulses of laser radiation to form a flap in the cornea of ​​the human eye. As disclosed herein, ultrashort is intended to mean pulse durations in the nanosecond, picosecond, femto...

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Abstract

An apparatus for creating incisions in a human cornea comprises: a source of pulsed laser radiation; a scanner device for scanning the laser radiation; and a control computer for controlling the scanner device based on a control program, the control program containing instructions that, when executed by the computer, bring about the creation in the cornea of: a flap cut defining a corneal flap that is connected to surrounding corneal tissue through a hinge; and one or more auxiliary cuts in connection with the flap cut for removing gas generated during creation of the flap cut, the one or more auxiliary cuts defining a first channel extending from the flap cut to an anterior surface of the cornea and a reservoir located at least partially deeper within the cornea than the flap cut.

Description

technical field [0001] The present disclosure relates to the use of pulsed, focused laser radiation to create incisions in the human cornea. More specifically, the present disclosure relates to the preparation of LASIK flaps in the human cornea while avoiding the generation of an opaque bubble layer (OBL). Background technique [0002] A common technique for eliminating visual defects of the human eye, such as nearsightedness or hyperopia or astigmatism, is known as LASIK (Laser In Situ Keratomileusis). LASIK is a technique in which a small covering disc in the cornea is incised, which remains attached to the surrounding corneal tissue via a hinge so that the disc can be folded over on one side to expose the underlying tissue region of the cornea , and can be folded back after an ablation treatment performed on the exposed tissue area using UV laser radiation. Covering discs are often referred to in the related art as flaps. After the flap is folded back, an altered shape...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F9/008
CPCA61F9/00836A61F2009/00872A61F9/008A61F9/009A61F2009/00853A61F2009/00855A61F2009/00897
Inventor 约翰·克劳斯克里斯托夫·多尼斯基
Owner ALCON INC
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