[특허]Electrosurgical procedure for the treatment of the cornea

Electrosurgical procedure for the treatment of the cornea 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61B-017/36
출원번호	US-0629062 (1996-04-08)
발명자 / 주소	Silvestrini Thomas A.
출원인 / 주소	KeraVision, Inc.
대리인 / 주소	Morrison & Foerster LLP
인용정보	피인용 횟수 : 74 인용 특허 : 0

초록 ▼

This invention is a device and procedure for the correction of optical abnormalities in a human eye. It involves use of an inventive electrosurgical energy probe with specific physical configurations. The process preferably utilizes a high frequency RF electro-desiccation or ablation device. The procedure involves the initial step of forming at least one access site allowing access to the corneal volume behind the Bowman's Layer. It preferably is placed in the anterior surface of the cornea through and ending posterior to the Bowman's layer of the eye. The electrosurgical probe is then introduced into the access site and, depending upon the visual abnormality to be corrected, the probe is activated to adjust the volume of the corneal stromal layers through ablation or desiccation. The shape of the volume desiccated or ablated is dependent upon the aberration to be corrected. For instance, if the optical aberration to be alleviated is hyperopia, a circular corneal volume reduction taking place about the outer periphery of the corneal mass may be accomplished. In other instances, such as for the treatment of astigmatism, certain smaller sections of the corneal volume may be shrunk. In certain circumstances, Bowman's layer may be cut to allow the curvature of the cornea to change after the corneal volume adjustment. These relief cuts may be radial, circular, semicircular or any other form appropriate for the option adjustment needed.

대표청구항 ▼

[ I claim as my invention:] [1.] An electrosurgical probe comprising a support end and a substantially hook-shaped contact end where said contact end comprises at least one active tissue contacting site disposed on a surface of said contact end, the plane of the contact end is substantially coplanar with corneal lamellae when the probe is introduced into a corneal mass, an area of the at least one active site is substantially smaller than an area of the contact end surface on which the at least one active site is disposed, and the active site is in electrical connection with an insulated conductor residing within said contact end and extending to the support end.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Electrosurgical procedure for the treatment of the cornea 원문보기

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Electrosurgical procedure for the treatment of the cornea 원문보기

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