The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 18, 2001
Filed:
Oct. 01, 1999
Donald M. Cohen, Irvine, CA (US);
Alcon Laboratories, Inc., Fort Worth, TX (US);
Abstract
A tip for a liquefraction surgical handpiece uses at least two tubes. One tube is used for aspiration and another, smaller tube is used to inject heated surgical fluid for liquefying a cataractous lens. The distal portion of the injection tube terminates just inside of the aspiration tube so that heated fluid escaping the injection tube is reflected off of the internal wall of the aspiration tube prior to entering the eye. The internal wall is textured or roughened to further diffract the fluid stream. Such an arrangement prevents the injected fluid from directly entering the eye. The handpiece may also contain other tube, for example, for injecting relatively cool surgical fluid.