Cynthia A. Toth has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
Abstract: A novel microfocusing laser surgical probe for use in intraocular surgery combines a high power laser with a gradient index (GRIN) lens to provide sufficient energy density at a focal point inside the eye to achieve laser induced breakdown and destroy fibrovascular membranes resulting from diabetes and other diseases. The gradient index lens steeply focuses the light close to its end so that the energy density of the light widely diverges beyond the focal point to reduce the potential for damage to the underlying retina. The gradient index lens also focuses the light far enough from the end of the lens to prevent damage to the lens itself. In a first embodiment, an open transmission line couples a YAG laser to a gradient index lens so that the light is still collimated when it strikes the lens. This first probe may be articulated by the use of mirrors or other optical devices.
January 3, 1995
Date of Patent:
April 14, 1998
Daniel X. Hammer, Cynthia A. Toth, William P. Roach, Gary D. Noojin