IOL insertion apparatus
View Patent ↗An intraocular lens insertion apparatus includes a hollow tube having an interior wall defining a hollow space through which an intraocular lens may be passed from the open space into an eye. A lubricity enhancing component is covalently bonded to the hollow tube at the interior wall in an amount effective to facilitate the passage of the intraocular lens through the hollow space. The lubricity enhancing component includes a substituent component effective to reduce hydrolysis of said lubricity enhancing component relative to an identical lubricity enhancing component without the substituent component.
1. An intraocular lens insertion system comprising:
an inserter formed of polymeric material including:
a semi-opaque hollow tube having a first end and a second end, the hollow tube, first end, and second end defining a hollow space configured to pass an intraocular lens through an incision of 2.8 mm or less,
a first opening at the first end of the hollow tube and a second opening at the second end of the hollow tube, and
the hollow tube having an interior surface extending between the first end and the second end, and
a layer of lubricity enhancing component, the lubricity enhancing component covalently bonded to the interior surface;
wherein:
the lubricity enhancing component is a two-stage reaction product of a precursor material and the polymeric material, wherein in one of the two stages, the precursor material is exposed to ultraviolet (UV) light to form a covalently bonded coating on the interior surface, and in the other of the two stages, the covalently bonded coating is exposed to thermal radiation to enhance stability of the covalently bonded coating,
the precursor material including a hydrolysis reducing substituent component.
2. The intraocular lens insertion system of claim 1 , wherein the hydrolysis reducing substituent component is other than hydroxy.
3. The intraocular lens insertion system of claim 1 , wherein the hydrolysis reducing substituent component is selected from the group consisting of hydrocarbyl groups, substituted hydrocarbyl groups, and mixtures thereof.
4. The intraocular lens insertion system of claim 3 wherein the hydrolysis reducing substituent component has 1 to about 4 carbon atoms per group.
5. The intraocular lens insertion system of claim 1 , wherein the hydrolysis reducing substituent component is selected from the group consisting of alkoxy groups having 1 to about 4 carbon atoms and mixtures thereof.
6. The intraocular lens insertion system of claim 1 , wherein the hydrolysis reducing substituent component includes one or more methoxy groups.
7. The intraocular lens insertion system of claim 1 , wherein the hydrolysis reducing substituent component is effective to reduce hydrolysis of the lubricity enhancing component relative to an identical lubricity enhancing component including one or more hydroxy groups in place of the hydrolysis reducing substituent component.
8. The intraocular lens insertion system of claim 1 , wherein the lubricity enhancing component is hydrophilic.
9. The intraocular lens insertion system of claim 1 , wherein the precursor component further includes an alkylene oxide component and a reactive substituent component effective to covalently bond with at least one of the alkylene oxide component and the polymeric material.
10. The intraocular lens insertion system of claim 9 , wherein the reactive substituent component is an ethylenically unsaturated group.
11. The intraocular lens insertion system of claim 9 , wherein said alkylene oxide component is an ethylene oxide component.
12. The intraocular lens insertion system of claim 9 , wherein the reactive substituent component is selected from the group consisting of vinyl groups, acrylic groups, methacrylic groups and mixtures thereof.
13. The intraocular lens insertion system of claim 9 , wherein the precursor component is water soluble.
14. The intraocular lens insertion system of claim 9 , wherein the precursor component is methoxy polyethylene glycol monomethacrylate.
15. The intraocular lens insertion system of claim 1 , wherein the lubricity enhancing component is effective to reduce the force needed to pass an intraocular lens through the hollow space relative to the force needed to pass an identical intraocular lens through the hollow space of a similar apparatus without the lubricity enhancing component.
16. The intraocular lens insertion system of claim 1 , further comprising a loading portion coupled to the first end of the hollow tube and sized and adapted to receive an intraocular lens for passage into the hollow space.
17. The intraocular lens insertion system of claim 16 , wherein the lubricity enhancing component is covalently bonded to the loading portion in an amount effective to at least assist in facilitating the passage of the intraocular lens into the hollow space.
18. The intraocular lens insertion system of claim 1 wherein the precursor material further includes at least one of a photoinitiator and a thermal initiator.
19. The intraocular lens insertion system of claim 1 wherein the precursor material further includes a photoinitiator and a thermal initiator.
20. The intraocular lens insertion system of claim 1 wherein the hydrolysis reducing substituent component reduces hydrolysis of the lubricity enhancing component relative to an identical lubricity enhancing component without the hydrolysis reducing substituent component.