Multi-part intraocular lens with locking mechanism

Patent metadata

Field	Value
Publication number	US-2023120238-A1
Application number	US-202218068877-A
Country	US
Kind code	A1
Filing date	Dec 20, 2022
Priority date	Mar 5, 2020
Publication date	Apr 20, 2023
Grant date	—

Abstract

A multi-part intraocular lens (IOL) with an interchangeable optic seated on a base and secured by a locking mechanism. The optic comprises an anterior surface with a diameter greater than a diameter of a ring of the base. The posterior side of the optic has a posterior surface, a transition region for contact with the base, and sidewalls and tabs radially outward of the transition region. The sidewalls and tabs overlap at least a portion of the ring to reduce or even prevent decentration and tilt of the optic. Each tab has a lateral extension for coupling to the base.

First claim

1 . An intraocular lens assembly, comprising:
a base comprising:
a ring comprising an anterior surface and a posterior surface defining a ring thickness; and
a plurality of haptics extending from an outer surface of the ring, wherein each of the plurality of haptics comprises a gusset region forming a ring-haptic junction with the outer surface of the ring; and
an optic, comprising:
an anterior side, a posterior side, and a plurality of tabs protruding from the posterior side;
wherein each of the plurality of tabs comprises a lateral extension configured to be positioned posterior to a posterior surface of a haptic of the plurality of haptics when the tab is positioned in one of the ring-haptic junctions.

2 . The intraocular lens assembly of claim 1 , wherein the outer surface of the ring defines a ring diameter.

3 . The intraocular lens assembly of claim 2 , wherein the anterior side of the optic comprises an anterior surface defining an anterior surface diameter greater than the ring diameter.

4 . The intraocular lens assembly of claim 1 , wherein the posterior side of the optic comprises:
a posterior surface; a transition region radially outward of the posterior surface; and a pair of sidewalls located radially outward of the transition region, wherein each sidewall has a sidewall height.

5 . The intraocular lens assembly of claim 4 , wherein the sidewall height is greater than the ring thickness.

6 . The intraocular lens assembly of claim 1 , wherein each lateral extension comprises an anterior surface configured to be positioned in contact with a posterior surface of one of the plurality of haptics.

7 . The intraocular lens assembly of claim 1 , wherein an inner surface of the ring comprises a groove.

8 . The intraocular lens assembly of claim 7 , further comprising a second optic positioned in the groove.

9 . The intraocular lens assembly of claim 1 , wherein each of the plurality of haptics comprises a notch for receiving the lateral extension of one of the plurality of tabs.

10 . The intraocular lens assembly of claim 1 , wherein the anterior surface of each lateral extension comprises a recess for receiving a raised feature.

11 . An intraocular lens assembly, comprising:
a ring comprising an anterior surface, a posterior surface, and a plurality of posts extending radially from the ring; and an optic, comprising:
an anterior side, a posterior side, and a plurality of tabs protruding from the posterior side;
wherein each of the plurality of tabs comprises a lateral extension configured to be positioned posterior to one of the plurality of posts when the optic is seated on the ring.

12 . The intraocular lens assembly of claim 11 , wherein an outer surface of the ring defines a ring diameter.

13 . The intraocular lens assembly of claim 12 , wherein the anterior side of the optic comprises an anterior surface defining an anterior surface diameter greater than the ring diameter.

14 . The intraocular lens assembly of claim 11 , wherein:
the plurality of posts extend radially outward from an outer surface of the ring; the plurality of tabs are located along a perimeter of the posterior side of the optic; and rotation of the optic relative to the ring contacts an anterior surface of each lateral extension with a posterior surface of one of the plurality of posts.

15 . The intraocular lens assembly of claim 11 , wherein:
the plurality of posts extend radially inward from an inner surface of the ring; the plurality of tabs are located radially inward from an edge of the posterior side of the optic; and rotation of the optic relative to the ring contacts an anterior surface of each lateral extension with a posterior surface of one of the plurality of posts.

16 . The intraocular lens assembly of claim 11 , wherein the ring further comprises a pair of haptics extending from the outer surface of the ring.

17 . An intraocular lens assembly, comprising:
a ring, comprising:
an anterior surface and a posterior surface defining a ring thickness; and
a plurality of openings extending through the ring thickness from the anterior surface to the posterior surface; and
an optic, comprising:
an anterior side, a posterior side, and a plurality of tabs protruding from the posterior side, each of the plurality of tabs comprising a lateral extension;
wherein each of the plurality of tabs is configured to extend through one of the plurality of openings such that an anterior surface of each of the lateral extensions is positioned against the posterior surface of the ring.

18 . The intraocular lens assembly of claim 17 , wherein the posterior side of the optic comprises a plurality of sidewalls extending from a perimeter of the posterior side.

19 . The intraocular lens assembly of claim 18 , wherein:
each of the plurality of sidewalls has a sidewall height; and the sidewall height is greater than the ring thickness.

20 . The intraocular lens assembly of claim 17 , wherein the ring further comprises a pair of haptics extending from an outer surface of the ring.

Assignees

• Alcon Inc

Inventors

• Das Kamal K
• Dolla William Jacob Spenner

Classifications

• A61F2002/16902

  Separable from intraocular lens · CPC title

• A61F2002/1683

  having filiform haptics · CPC title

• A61F2002/169

  Surrounding optic · CPC title

• A61F2002/1681

  having supporting structure for lens, e.g. haptics · CPC title

• A61F2/16 Primary

  Intraocular lenses · CPC title