Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Eye prosthesis – Intraocular lens
Patent
1985-08-05
1987-11-03
Apley, Richard J.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Eye prosthesis
Intraocular lens
A61F 216
Patent
active
047041250
ABSTRACT:
An intraocular lens of the type having a transparent lens body and a pair of oppositely projecting curved resilient support loops, wherein the lens is designed for facilitated implantation into the posterior chamber of the eye following extracapsular extraction of a natural lens. A first loop carries a guide blade projecting toward the lens body and including an aperture near said first loop for receiving a retention tab projecting posteriorly from the lens body periphery to retain the first loop compressed closely alongside the lens body periphery with a substantial portion of the blade lying along the posterior surface of the lens body. Upon lens implantation into the posterior chamber, for example, through a corneal incision and the pupil, the lens is oriented with the second loop in a leading position for easy seating within the capsular bag, while the first loop is retained by the tab until the lens is fully seated within the capsular bag. The guide blade is then released from the tab permitting the first loop to spring outwardly with the guide blade maintained posteriorly of the lens body through a substantial initial portion of this movement to insure seating within the capsular bag. A forceps instrument is also disclosed for handling the improved lens and for disengaging the guide blade from the retention tab during an implantation procedure.
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Apley Richard J.
Prizant James
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