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. 23, 1979
Filed:
Feb. 24, 1977
Joseph Spina, Bryn Mawr, PA (US);
Michael K Weibel, Redding, CT (US);
Novo Laboratories, Incorporated, Wilton, CT (US);
Abstract
An enzymatic intralenticular cataract treatment method for removal of nuclear cortical and subcapsular regions of the cataractous lens through enzymatic digestion thereof, which comprises introduction of a concentrated solution of proteinase into the nuclear and cortical regions of a cataractous lens by way of a cannula inserted through a very tiny incision in the cornea and puncture opening into the lens capsule, leaving all other structures within the eye intact, after which a gas bubble is introduced from the cannula into the lens, the gas bubble serving to maintain the enzyme compartmentalized within the subcapsular region. As illustrated in FIG. 4, a preferred embodiment of the apparatus involved with the method comprises an enzyme reservoir connected through a delivery means and a four port, two channel valve to a cannula. The cannula is filled with enzyme solution then the delivery means and valve are operated by the surgeon so as to carry out the above described treatment method.