Intraocular lens insertion device and cartridge
An intraocular lens insertion device and a cartridge which enable the intraocular lens to be inserted into an eye more stably and easily than ever before. A supporting portion 102 of an intraocular lens 100 arranged on a lens-advancing side in a lens-advancing direction x is pressed against a protrusion 21 so as to be bent backward. Thus, releasing the intraocular lens 100 from a nozzle portion 13 is allowed to begin with the releasing of a curved portion of the supporting portion 102 that has become U-shaped and hard to move freely. As a result, there can be provided an intraocular lens insertion device and a cartridge which enable the intraocular lens 100 to be inserted into an eye more steadily and easily than ever before.
1. An apparatus for use with an intraocular lens that includes an optical portion and first and second support portions, the apparatus comprising:
a tubular member including a lens placement portion, a nozzle that is configured to be inserted into an eye, a plunger that moves in a lens advancement direction toward the nozzle, and an inner surface defining an internal lumen that extends from the lens placement portion to the nozzle and through which the plunger and the intraocular lens travel in the lens advancement direction; and
means for moving in and out of the internal lumen through which the plunger and the intraocular lens travel and, when in the internal lumen, contacting and bending the first support portion in a direction opposite the lens advancement direction as the intraocular lens travels though the internal lumen in the lens advancement direction with the first support portion ahead of the second support portion such that the first support portion remains bent when it enters the nozzle.
2. An apparatus as claimed in claim 1 , wherein
the tubular member comprises a portion of an intraocular lens cartridge.
3. An apparatus as claimed in claim 2 , wherein
the means for moving, contacting and bending is located on a cartridge case.
4. An apparatus as claimed in claim 1 , wherein
the tubular member comprises a portion of an intraocular lens insertion device.
5. An apparatus as claimed in claim 4 , wherein
the means for moving, contacting and bending is located on an insertion device case.
6. An apparatus for use with an intraocular lens that includes an optical portion and first and second support portions, the apparatus comprising:
a tubular member including a lens placement portion, a nozzle that is configured to be inserted into an eye, a plunger that moves in a lens advancement direction toward the nozzle, and an inner surface defining an internal lumen that extends from the lens placement portion to the nozzle and through which the plunger and the intraocular lens travel in the lens advancement direction; and
means for moving in and out of the internal lumen through which the plunger and the intraocular lens travel at a contact location and, when in the internal lumen at the contact location, contacting and bending the first support portion in a direction opposite the lens advancement direction as the intraocular lens travels though the internal lumen in the lens advancement direction with the first support portion ahead of the second support portion such that the first support portion remains bent when it enters the nozzle;
wherein the respective configurations of the internal lumen and the contact location are such that the intraocular lens optical portion abuts the means for moving, contacting and bending at the contact location as the intraocular lens travels though the internal lumen in the lens advancement direction.
7. An apparatus as claimed in claim 6 , wherein
the tubular member comprises a portion of an intraocular lens cartridge.
8. An apparatus as claimed in claim 7 , wherein
the means for moving, contacting and bending is located on a cartridge case.
9. An apparatus as claimed in claim 6 , wherein
the tubular member comprises a portion of an intraocular lens insertion device.
10. An apparatus as claimed in claim 9 , wherein
the means for moving, contacting and bending is located on an insertion device case.