Intraocular lens designs for improved stability
Inventors
Kahook, Malik Y. • Sussman, Glenn • Zacher, Rudolph F. • McLEAN, Paul J. • Atkinson, Robert E.
Assignees
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Publication Number
US-12740857-B2
Publication Date
2026-09-22
Expiration Date
Abstract
Intraocular lenses (IOLs) that improve lens stability by, for example, increasing anterior-posterior stiffness of the IOL, increasing anterior-posterior dimensions of the IOL and/or increasing contact area with the equator of the bag to resist movement of the IOL as the bag collapses over time. These IOLs may be non-modular (single component) or modular (multiple component). In modular embodiments, the IOL system may include intraocular base and optic components, which, when combined, form a modular IOL.
Core Innovation
The described intraocular lens designs address capsular-bag stability by increasing anterior-posterior stiffness, implant dimensions, or contact with the bag equator. The modular designs use a base with a circumferential recess configured to receive lens tabs, while other configurations incorporate flanged haptics, gussets, support portions, ridges, or resilient springs. These structural features support overall stability within the capsular bag while retaining deliverability during insertion into an eye.
The eye-insertable devices comprise a base whose anterior and posterior housing portions connect via an intermediate housing portion featuring a circumferential recess and a through passage. The modular configuration includes a lens received in the intermediate housing portion, wherein the lens comprises a central optic and radially protruding tabs configured to engage intermediate housing surfaces. Alternative configurations include opposing curved supports, haptics, flanges, frames, or connecting arms.
Claims Coverage
The claims identify two inventive features across the independent claims covering an eye-insertable device.
Base with a circumferential recess
The base includes anterior and posterior portions joined by a wider, protruding intermediate portion. The intermediate portion includes a recess formed by anterior and posterior ledges and a sidewall extending continuously around the base, wherein the posterior portion is a one-piece continuous structure extending from the intermediate portion.
Housing and lens with engaging tabs
The base includes anterior, posterior, and intermediate housing portions with a circumferential recess and a passage extending through the housing portions. A lens received in the intermediate housing portion comprises a central optic and a pair of radially protruding tabs configured to engage one or more surfaces of the intermediate housing portion.
The independent claims cover a recessed base configuration and a housing configuration that additionally includes a through-passage and a tabbed lens engaging the circumferential recess of the intermediate housing portion.
Stated Advantages
The described designs are intended to improve capsular-bag stability by increasing anterior-posterior stiffness, implant dimensions, or contact with the bag equator.
The base's greater volume, rigid ring, and extended haptics are described as intended to limit migration and improve centering.
A bench comparison reports that the modular intraocular lens showed roughly one-fifth the displacement of a commercial intraocular lens under the tested loads.
Documented Applications
The devices are configured for insertion into an eye, specifically for placement of the intraocular lens designs in the capsular bag.
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