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:
Feb. 07, 1984
Filed:
Jul. 21, 1981
Applicant:
Inventor:
Khalil Hanna, Paris, FR;
Assignee:
Sevifra S.A., Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
128310 ; 128305 ;
Abstract
The present invention concerns a trephine for making at least one circular incision on the cornea of an eye. The trephine comprises an external support forming a casing and having a base portion for applying it to the eye, an internal blade carrier which is movable in the support, and a drive mechanism for driving the blade carrier with respect to the support. The blade carrier is driven by the drive mechanism which causes it to screw into and out of the support and the blade is cylindrical, the cutting blade portion being formed by its lower circular edge.