Device for non-contact wide-angle viewing of fundus during vitrectomy
US5793524A · kind A · utility
Inventor
Key dates
| Filing date | Aug 4, 1997 |
| Grant date | Aug 11, 1998 |
| Priority date | — |
| Expiry date | Aug 4, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B21/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A wide-angle viewing attachment for an ocular microscope includes a first lens attached to the microscope and a second lens independently mountable with respect to the microscope. The second lens is positionable proximal to an eye of a surgical patient and is maintained in the proximal position by an attachment system including a support member coupled in a fixed position to an operating table on which the patient is reclined. A first support rod extends vertically from the support member and a clamp member is adjustably mounted on the support rod. A horizontally extending second support rod is adjustably coupled to the clamp member and terminates at one end in a generally flat plate. A lens carrier includes a spring clamp for holding the second lens and a support arm extending generally horizontally with respect to the first support rod. The carrier terminates in a magnet assembly which holds the lens carrier to the flat plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.