Limited depth corneal punch

a limited depth, corneal punch technology, applied in the field of single-use adjustable depth trephine devices, can solve the problems of severe astigmatism, requiring a certain amount of skill, and inaccurate use of this “touch” method
US20220257419A1Pending Publication Date: 2022-08-18BARRON PRECISION INSTR
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
BARRON PRECISION INSTR
Publication Date
2022-08-18

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Abstract

A single-use adjustable depth trephine corneal punch device that allows a goal trephination depth of a donor cornea to be set and cut prior to a surgical procedure for cutting selected portions of an actual patient cornea. The corneal punch includes a punch block having a central well for receiving a donor cornea, a punch top mounted atop the punch block and having a central cylindrical opening coaxially aligned with the well, and means for cutting a selected portion of the donor cornea in the central well, wherein the means for cutting includes a punch blade mounted atop the punch top and through the opening for combined limited rotation less than about 312 degrees and limited axial movement from a reference or “start” point and into juxtaposed relation against the cornea and a limited axial downward movement during rotation wherein to make a shallow cut in the cornea.
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Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] This application is a continuation application of U.S. patent application Ser. No. 16 / 661,232, filed Oct. 23, 2019, which in turn claims the benefit of U.S. Provisional Patent Application Ser. No. 62 / 749,366, filed Oct. 23, 2018, for a Limited Depth Corneal Punch, the disclosures of which is hereby incorporated by reference in its entirety, including the drawings.BACKGROUND OF THE INVENTION1. Field of the Invention

[0002] The present invention pertains to a single-use adjustable depth trephine device that allows a goal trephination depth of a donor cornea to be set and cut prior to a surgical procedure for cutting selected portions of an actual patient cornea.2. Description of the Prior Art

[0003] Corneal transplant trephine devices were introduced in the 1980's for the cutting of donor cornea tissue in cases of cornea transplants. Typically, the diseased patient cornea was replaced with the donor tissue using a procedure called penetrating ke...

Claims

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