Rapid exchange IOL insertion apparatus and methods of using
A system for easily transferring an intraocular lens (IOL) from a lens case to an inserter, and then into a patient's eye. The lens case has a transfer mechanism therein which retains the IOL until engagement with the inserter. The transfer mechanism may include jaws having a closed configuration for retaining the IOL and an open configuration for releasing the IOL. Engagement of the inserter with the lens case automatically opens the jaws and transfers the IOL to the inserter. The IOL is transferred into a load chamber of a nosepiece rotatably coupled to a handpiece. After transfer of the IOL, the nosepiece is rotated from a load position to a delivery position. The IOL may have an optic and a haptic coupled to the optic, and the lens case may be capable of configuring the haptic as desired to facilitate its transfer into an inserter and/or into the eye. For instance, the lens case may fold one or both of the haptics over the optic. Preferably, the lens case maintains the haptic in this position during transfer of the intraocular lens into an inserter and/or inserter cartridge. A manifold for easily distributing a viscoelastic medium to the load chamber of the inserter is also provided.
1. An intraocular lens (IOL) and lens case combination for cooperating with an IOL inserter, comprising:
an intraocular lens comprising an optic configured to focus light onto the retina of an eye when placed inside the eye and a haptic coupled to the optic for holding the optic within the eye; and
a lens case for storing the IOL prior to usage, the lens case having a transfer port adapted to engage the inserter and a transfer mechanism within the lens case comprising an upper jaw and a lower jaw that retain the IOL in a fixed location during storage and separate to automatically release the IOL upon engagement of the transfer port with the inserter, wherein at least one of the upper jaw and the lower jaw has pins that project from the jaw for securing the IOL, and wherein the transfer mechanism further permits disengagement of the lens case from the inserter after IOL transfer therebetween, the lens case further having a haptic folder configured to move the haptic to a predetermined position relative to the optic prior to IOL transfer.
2. The combination of claim 1 , further including a cap for the lens case that displaces the haptic folder upon removal of the cap from the lens case such that the haptic folder moves the haptic to its predetermined position relative to the optic.
3. The combination of claim 2 , the transfer mechanism further including a haptic retention finger that displaces upon removal of the cap from the lens case.
4. The combination of claim 1 , wherein the jaws are molded and connected at a living hinge.
5. The combination of claim 1 , wherein the haptic folder transfers to the inserter with the IOL.
6. The combination of claim 1 , wherein the haptic folder includes an actuating arm and a ramp surface, the actuating arm contacting the haptic and camming it along the ramp surface to its predetermined position relative to the optic.