Disposable intraocular lens insertion system
View Patent ↗An intraocular lens injection system comprising an injecting device and cartridge. The cartridge comprises a lens holding portion and an outer sleeve portion. The invention includes a method of pre-loading the injecting system, particularly the cartridge, to reduce the amount of packaging, prevent damage to the intraocular lens during packaging and shipping, allow the pre-loaded injecting cartridge to be autoclaved as a unit, and eliminate the step of loading the cartridge with the intraocular lens by the end user to prevent potential damage during this step.
1. An intraocular lens insertion system for inserting an intraocular lens into the eye, comprising:
an injecting device having a cartridge receiver; and
a cartridge for accommodating the intraocular lens, said cartridge including a lens holding portion and a sleeve portion that can be connected together after inserting the intraocular lens into said lens holding portion of said cartridge to form an assembled cartridge.
2. A system according to claim 1 , wherein said lens holding portion is defined by a body portion and a nozzle portion.
3. A system according to claim 2 , wherein said lens holding portion includes an open passageway for receiving the intraocular lens from the side of the lens holding portion, said open passageway in said lens holding portion leading into a closed passageway through said nozzle portion.
4. A system according to claim 3 , wherein said lens holding portion is defined by a lens receiving portion and a lens transition portion, said open passageway through said lens receiving portion of said lens holding portion having an open passageway portion with a fixed cross-sectional shape and size, and said open passageway through said lens transition portion of said lens holding portion having an open passageway portion with a varying cross-sectional shape and downwardly tapering cross-sectional size.
5. A system according to claim 4 , wherein said lens transition portion includes a closed passageway portion connecting said open passageway portion of said lens transition portion with said close passageway through said nozzle portion.
6. A system according to claim 1 , wherein said lens holding portion includes a lens receiving portion having a passageway with a fixed size and shaped transverse cross-section, and a lens transition portion having a passageway with a downwardly tapering and varying shaped transverse cross-section.
7. A system according to claim 1 , wherein said injecting device and said cartridge are configured so that said cartridge is front loaded into said injecting device.
8. A system according to claim 1 , wherein said cartridge locks into said injecting device when loaded therein.
9. A system according to claim 7 , wherein said cartridge locks into said injecting device when loaded therein.
10. A system according to claim 1 , wherein said injecting device and cartridge are made of readily disposable material.
11. A system according to claim 1 , wherein said injecting device and cartridge are made of autoclavable material.
12. A system according to claim 11 , wherein said injecting device is made of one or more materials selected from the group of polysulfone, polycarbonate, nylon-66, TEFLON, and KYNAR.
13. A method of implanting an intraocular lens, comprising the steps of:
loading an intraocular lens into a cartridge having a partially open passageway and a downwardly tapering cross-sectional sized passageway portion;
covering the open passageway portion;
loading said cartridge into an injecting device; and
forcing the intraocular lens through the downwardly tapering cross-sectional sized passageway of said cartridge to further reduce the outer dimensions of the intraocular lens to enable a reduction in the size of an incision in the eye.
14. A method according to claim 13 , wherein said open passageway portion is covered by a portion of said cartridge.
15. A method according to claim 14 , wherein said open passageway portion is covered by a separate portion of said cartridge.
16. A method according to claim 13 , wherein said intraocular lens is pre-loaded in said cartridge for storage and shipment.