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:
Jan. 21, 2003
Filed:
Oct. 19, 1998
Applicant:
Inventor:
Thomas A. Silvestrini, Alamo, CA (US);
Assignee:
Addition Technology, Inc., Des Plaines, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61F 2/14 ;
U.S. Cl.
CPC ...
A61F 2/14 ;
Abstract
This invention is a pre-formed intrastromal corneal insert. It is made of a physiologically compatible polymer and may be used to adjust corneal curvature and thereby correct vision abnormalities. The insert or segment may also be used to deliver therapeutic or diagnostic agents to the interior of the cornea or of the eye. The insert subtends only a portion of a ring, or “arc”, encircling the anterior cornea outside of the cornea's field of view. The invention also includes a procedure for inserting the device into the cornea.