Intraocular Lens Injector with Hydrophilic Coating
An IOL injector that includes one or more polymeric portions that include a hydrophilic coating component that is effective to facilitate the passage of the IOL through the injector, particularly an injector tip. The IOL injector is prepared by a process that includes irradiating at least a portion of a polymeric, IOL injector with UV light in an environment comprising oxygen to provide a positive percent change in the atomic oxygen content of the polymer material at the surface as determined by X-ray Photoelectron Spectroscopy (XPS). A portion or the entire irradiated portion is then contacted with a solution comprising a hydrophilic coating component. The hydrophilic coating component is selected from a hydrophilic polymer, a hydrophilic copolymer or any one mixture thereof to provide a solution coated portion. The solution coated portion is then heated at a temperature to provide portions of the IOL injector with a shelf-stable, lubricious hydrophilic coating to facilitate delivery of an IOL from the injector.
1 . An intraocular lens injector prepared by a process comprising:
irradiating at least a portion of a polymeric, intraocular lens injector with UV light in an environment comprising oxygen to provide a positive percent change in the atomic oxygen content of the polymer material at the surface as determined by X-ray photoelectron spectroscopy;
contacting at least a portion of the irradiated portion with a solution comprising a hydrophilic polymer, a hydrophilic copolymer or any one mixture thereof to provide a solution coated portion; and
heating the solution coated portion to provide the lens injector with a shelf-stable, lubricious coating to facilitate delivery of an intraocular lens from the injector with minimal damage to the lens and with little or no transfer of the lubricious coating to a surface of the lens.
2 . The intraocular lens injector of claim 1 further comprising:
contacting at least a portion of the irradiated portion with a solution comprising a crosslinkable polymer and initiating the crosslinking with light or heat prior to contacting at least a portion of the irradiated portion with the solution comprising a hydrophilic polymer, a hydrophilic copolymer or any one mixture thereof.
3 . The intraocular lens injector of claim 1 wherein the hydrophilic polymer is selected from the group consisting of polyacrylic acid, polymethacrylic acid, polyvinylacetate, polyacrylamide and polyvinylpyrrolidone.
4 . The intraocular lens injector of claim 1 wherein the hydrophilic copolymer is selected from poly(PVP-VA), poly(PVP-AA) or poly(PVP-DMA).
5 . The intraocular lens injector of claim 1 wherein the hydrophilic polymer is a polyether polyurethane.
6 . The intraocular lens injector of claim 1 wherein the UV light is UV-C light.
7 . The intraocular lens injector of claim 1 wherein the hydrophilic copolymer is poly(PVP-VA) with a PVP:VA ratio of 30:70 to 80:20.
8 . The intraocular lens injector of claim 1 wherein the portion of a polymeric, intraocular lens injector that is irradiated with UV light comprises polypropylene, and the atomic oxygen content of the polymer material at the surface of said irradiated portion prior to contacting said portion with a solution comprising a hydrophilic polymer, a hydrophilic copolymer or any one mixture thereof, is from 5 at. % to 20 at. % as determined by X-ray photoelectron spectroscopy.
9 . The intraocular lens injector of claim 1 wherein the shelf-stable, lubricious coating exhibits greater shelf-stability than a similar lubricious coating applied without irradiation with the UV light.
10 . An intraocular lens injector tip prepared by a process comprising:
irradiating an intraocular lens injector tip comprising polypropylene with UV-C light in an environment comprising oxygen to provide a surface, atomic oxygen content of the injector tip from 5 at. % to 20 at. % as determined by X-ray photoelectron spectroscopy;
contacting the irradiated injector tip with a solution comprising a hydrophilic polymer, a hydrophilic copolymer or any one mixture thereof to provide a solution coated portion; and
heating the solution coated injector tip at a temperature from 35° C. to 110° C. to provide the injector tip with a shelf-stable, lubricious coating to facilitate delivery of an intraocular lens from an intraocular lens injector with minimal damage to the lens and with little or no transfer of the lubricious coating to a surface of the lens.
11 . The injector tip of claim 10 wherein the hydrophilic polymer is selected from the group consisting of polyacrylic acid, polymethacrylic acid, polyvinylacetate, polyacrylamide, polyvinylpyrrolidone and polyether polyurethane.
12 . The injector tip of claim 10 wherein the hydrophilic copolymer is selected from poly(PVP-VA), poly(PVP-AA) or poly(PVP-DMA).
13 . The injector tip of claim 10 wherein the hydrophilic copolymer is poly(PVP-VA) with a PVP:VA ratio of 30:70 to 80:20.
14 . The injector tip of claim 10 wherein the hydrophilic polymer is a polyether polyurethane.