Devices and methods for removing corneal epithelium

A technology of corneal epithelium and cornea, applied in the field of ophthalmology, can solve the problem that Bowman's membrane is not regenerated

Active Publication Date: 2020-03-10
ORCA SURGICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, while the epithelium is regenerative, the underlying Bowman's membrane is not

Method used

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  • Devices and methods for removing corneal epithelium
  • Devices and methods for removing corneal epithelium
  • Devices and methods for removing corneal epithelium

Examples

Experimental program
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Embodiment Construction

[0088] Disclosed herein are devices for removing a superficial layer of corneal epithelium ("epithelial tissue") and methods for operating the devices. A head formed by at least one cutting blade disposed substantially parallel to the control blade is provided for controllably peeling or scraping the corneal epithelium. A cutting blade forms the distal end of the device and is configured to strip epithelial tissue, while the penetration of the cutting blade is controlled to control the thickness of the stripped tissue to prevent damage to deeper non-epithelial tissue layers. Two blades surround channels that collect any removed epithelial tissue or fluid. The head can be attached to a handle, allowing a user or an automated robot to manipulate the blade over the cornea.

[0089] now refer to Figure 1A -C, which shows a device for removing a superficial layer of corneal epithelium according to one embodiment. An elongated head 100 is shown with generally trapezoidal sides, w...

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Abstract

A device is disclosed comprising: an elongated head having a distal end formed by an elongated edge of a cutting blade disposed parallel to an elongated edge of a control blade, wherein the elongated edges of the corresponding control and cutting blades Separated by a uniform gap, forming a distal opening in communication with a passage extending from the front end to the rear end of the head, wherein the elongated edge of the cutting blade extends distally beyond the elongated edge of the control blade such that the edge of the cutting blade meets the control blade. providing a height difference between the edges of the blades, wherein the edges of the cutting blade are sharp and configured to cut body tissue, and wherein the edges of the control blade are blunt and form a barrier to limit the edge penetration of the cutting blade to the depth of the body tissue.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of U.S. Provisional Patent Application No. 62 / 045,655, filed September 4, 2014, and entitled "Apparatus and Method for Removing Corneal Epithelium," which is hereby incorporated by reference in its entirety. [0003] Background of the invention [0004] The present invention relates to the field of ophthalmology. [0005] The cornea is the transparent epithelial layer that covers the iris, pupil, and anterior chamber of the eye. Incoming light is refracted by the curvature of the cornea, contributing to the focusing power of the eye. The cornea is generally circular, about 10 mm in diameter and ranging in thickness from 50-70 μm, and sits on top of Bowman's membrane or layer, thus covering the main corneal stroma. The epithelium is a layer of rapidly growing and easily regenerating cells that prevents the passage of foreign matter and provides a smooth surface for the distribution of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F9/007
CPCA61F9/007A61F9/0133A61F9/013
Inventor Y·巴-昂
Owner ORCA SURGICAL
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