Intraocular lens having annular groove formed in its peripheral portion
US5171320A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 29, 1991 |
| Grant date | Dec 15, 1992 |
| Priority date | — |
| Expiry date | Jan 29, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2220/0008
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An intraocular lens system adapted to be implanted within a generally circular opening in an anterior wall of the capsular bag which normally contains the crystalline lens of an eye. The intraocular lens system includes a lens body having an annular groove which is formed in a peripheral portion thereof in a plane substantially perpendicular to an optical axis of the lens body. The lens body includes an optically effective portion located radially inside the annular groove, and an anterior lens portion and a posterior lens portion located on respective anterior and posterior sides of the annular groove. The intraocular lens system is secured in position within the circular opening such that an annular flap portion of the capsular bag which surrounds the circular opening is accommodated within the annular grove in the lens body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.