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:
Apr. 15, 2003
Filed:
Aug. 21, 2001
Ravi Nallakrishnan, Westmont, IL (US);
Lee T. Nordan, Carlsbad, CA (US);
Other;
Abstract
A surgical blade for use in ophthalmic surgery has a multi-faceted distal end with cutting edges which meet at an angle greater than 90° and preferably 140°, resulting in a blade with a relatively large surface area. An anterior shoulder is positioned intermediate the distal and proximal ends of the blade to direct the blade to dimple down when the blade has been inserted into the cornea a sufficient distance to bring the shoulder into contact with the corneal tissue, allowing the surgeon to make a linear entry into the anterior chamber resulting in a reproducible, leak-free incision by using a straight-in hand motion. The blade is rounded at certain of its lateral edges to avoid snagging the incision when the blade is passed through the cornea.