Intraocular lenses with improved axial stability
US6228115A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1998 |
| Grant date | May 8, 2001 |
| Priority date | — |
| Expiry date | Nov 5, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2250/0073
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A refractive intraocular lens including an optic portion having an outer peripheral edge and three or four balanced haptic elements. Each haptic element is formed to have an inner portion and outer tip for supporting the optic portion in a patient's eye. The inner portion of each haptic element is permanently connected to the outer peripheral edge of the optic portion. Each haptic element also includes a contact plate and a transition portion, which extends between the contact plate and the inner portion. Each haptic is formed to have greater resistance to bending in a plane generally parallel to an eye's optical axis than in a plane generally perpendicular to the eye's optical axis. The intraocular lens is so designed to exhibit less than approximately 1.0 mm axial displacement of the optic portion along the eye's optical axis under a compression force suitable to effect a 1.0 mm in diameter compression of the intraocular lens. INTRAOCULAR LENSES
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.