Insertion cartridges with reduced iol stress

Patent metadata

Field	Value
Publication number	US-2023225857-A1
Application number	US-202318151300-A
Country	US
Kind code	A1
Filing date	Jan 6, 2023
Priority date	Jan 19, 2022
Publication date	Jul 20, 2023
Grant date	—

Abstract

An intraocular lens (IOL) injector cartridge having one or more modifications from conventional designs which reduce stress and strain in the optic of the IOL during passage through the cartridge. One change includes adding axially-oriented ribs in a funnel portion of the cartridge to enable the cartridge wall to flex outward during passage of the IOL, which is compressed to a great degree in the cartridge lumen. Another modification involves providing a longitudinal step along a segment of the inner lumen which biases one free edge of the optic to tuck or dive under the other free edge and encourage spiral folding as the IOL progresses along the gradually narrowing lumen. The third option is modifying the shape of the lumen within the extreme distal end of the cartridge where the lumen is smallest so that it is neither circular nor oval. Each or all of these modifications may be incorporated into a single cartridge.

First claim

What is claimed is:

1 . A cartridge for receiving and delivering an intraocular lens having an optic to the inner eye, comprising:
a main body extending along a longitudinal axis from a proximal opening for receiving the intraocular lens to a distal end which defines a distal opening smaller than the intraocular lens through which the intraocular lenses expelled, the main body having a narrowing lumen extending from the proximal opening to the distal opening and defined by a luminal wall, wherein the luminal wall further has a discontinuity or step formed in a midsection thereof and extending longitudinally for at least 0.2 cm, the discontinuity or step configured to facilitate a spiral rolling-up or folding of the optic of the intraocular lens.

2 . The cartridge of claim 1 , wherein the longitudinal discontinuity or step is formed at a central vertical midplane of the luminal wall in an upper ceiling thereof.

3 . The cartridge of claim 2 , wherein the longitudinal discontinuity or step extends no more than 1 cm.

4 . The cartridge of claim 1 , wherein the longitudinal discontinuity or step extends no more than 1 cm.

5 . The cartridge of claim 4 , wherein the longitudinal discontinuity or step is centered axially at a point along the main body where a circumference of the luminal wall is approximately equal to a diameter of the optic of the intraocular lens.

6 . The cartridge of claim 1 , wherein the longitudinal discontinuity or step is centered axially at a point along the main body where a circumference of the luminal wall is approximately equal to a diameter of the optic of the intraocular lens.

7 . The cartridge of claim 1 , wherein the longitudinal discontinuity or step is formed by the luminal wall becoming higher to the right of a central vertical plane relative to the left of the plane, and wherein, taken along any transverse section, the discontinuity or step is angled between about 30-60° from a first point on the lumen that is radially outward from a second point on the lumen.

8 . The cartridge of claim 7 , wherein the discontinuity or step has a planar land in a middle section that extends a dimension A of about 0.08 inches.

9 . The cartridge of claim 1 , wherein the longitudinal discontinuity or step is formed by a V-shaped rib extending inward from the luminal wall.

10 . The cartridge of claim 9 , wherein the V-shaped rib has two curved faces on opposite sides of an apex ridge, wherein the apex ridge gradually decreases as it progresses distally until it disappears into the luminal wall.

11 . The cartridge of claim 1 , wherein the longitudinal discontinuity or step has a radial dimension of between 0.25 to 0.5 mm.

12 . The cartridge of claim 1 , wherein the lumen further defines a luminal shape at the distal end which deviates from a standard oval of equivalent aspect ratio such that the luminal shape is larger than the standard oval between equatorial points.

13 . The cartridge of claim 1 , wherein the main body has a funnel portion with a plurality of axial grooves formed in an outer surface thereof, the axial grooves being spaced apart around the outer surface.

14 . A cartridge for receiving and delivering an intraocular lens having an optic to the inner eye, comprising:
a main body extending along a longitudinal axis from a proximal opening for receiving the intraocular lens to a distal end which defines a distal opening smaller than the intraocular lens through which the intraocular lenses expelled, the main body has a funnel portion with a plurality of grooves formed in an outer surface thereof, the axial grooves being spaced apart around the outer surface.

15 . The cartridge of claim 14 , wherein there are eight axial grooves distributed proximally 45° from each other around the outer surface.

16 . The cartridge of claim 14 , wherein the grooves extend inward by at least 20% of a wall thickness of the main body.

17 . The cartridge of claim 14 , wherein the grooves extend inward by 50-75% of a wall thickness of the main body.

18 . The cartridge of claim 14 , further including a discontinuity or step formed in a midsection of the lumen and extending longitudinally for at least 0.5 cm, the discontinuity or step facilitating folding of the optic of the intraocular lens

19 . The cartridge of claim 18 , wherein the longitudinal discontinuity or step is formed at a central vertical midplane of the lumen in an upper ceiling thereof.

20 . The cartridge of claim 19 , wherein the longitudinal discontinuity or step extends no more than 1 cm.

21 . The cartridge of claim 18 , wherein the longitudinal discontinuity or step extends no more than 1 cm.

22 . The cartridge of claim 18 , wherein the longitudinal discontinuity or step is centered axially at a point along the main body where a circumference of the lumen is approximately equal to a diameter of the optic of the intraocular lens.

23 . The cartridge of claim 18 , wherein the longitudinal discontinuity or step has a radial dimension of between 0.25 to 0.5 mm.

24 . The cartridge of claim 14 , wherein the lumen further defines a luminal shape at the distal end which deviates from a standard oval of equivalent aspect ratio such that the luminal shape is larger than the standard oval between equatorial points.

25 . A cartridge for receiving and delivering an intraocular lens having an optic to the inner eye, comprising:
a main body extending along a longitudinal axis from a proximal opening for receiving the intraocular lens to a distal end which defines a distal opening smaller than the intraocular lens through which the intraocular lenses expelled, the main body having a narrowing lumen extending from the proximal opening to the distal opening, wherein the lumen defines a luminal shape at the distal end which deviates from a standard oval of equivalent aspect ratio such that the luminal shape is larger than the standard oval between equatorial points.

26 . The cartridge of claim 25 , wherein the lumen further has a discontinuity or step formed in a midsection thereof and extending longitudinally for at least 0.5 cm, the discontinuity or step facilitating folding of the optic of the intraocular lens.

27 . The cartridge of claim 26 , wherein the longitudinal discontinuity or step is formed at a central vertical midplane of the lumen in an upper ceiling thereof.

28 . The cartridge of claim 26 , wherein the longitudinal discontinuity or step extends no more than 1 cm.

29 . The cartridge of claim 26 , wherein the longitudinal discontinuity or step has a radial dimension of between 0.25 to 0.5 mm.

30 . The cartridge of claim 26 , wherein the longitudinal discontinuity or step is centered axially at a point along the main body where a circumference of the lumen is approximately equal to a diameter of the optic of the intraocular lens.

31 . The cartridge of claim 26 , wherein, taken along any transverse section, the discontinuity or step is angled between about 30-60° from a first point on the lumen that is radially outward from a second point on the lumen.

32 . The cartridge of claim 31 , wherein the discontinuity or step has a planar land in a middle section that extends a dimension A of about 0.08 inches.

33 . The cartridge of claim 25 , wherein the m

Assignees

• Johnson & Johnson Surgical Vision Inc

Inventors

• Richardson Gary
• Voss Leslie A
• Kernick Edward R
• Perez Yasemar
• Cole Mark
• Ruddocks David A

Classifications

• A61F2/167 Primary

  with pushable plungers · CPC title

• A61F2/1678 Primary

  with a separate cartridge or other lens setting part for storage of a lens, e.g. preloadable for shipping · CPC title