Delivery of ophthalmic lenses
AssigneeDuckworth & Kent Limited
InventorsTerence Waldock, Stephen Woods
Life of this patent
Estimating the term…
Abstract
An instrument (110) for rolling a thin ophthalmic lens and inserting the rolled lens into the eye comprises a body (112) in which a plunger (124) is slidable. A thin lens (156) is placed on a lens roller (130) which is slidable transversely of the instrument. The lens is rolled during the sliding movement into a tubular configuration. The rolled lens is then positioned in the instrument in a cylindrical cavity and ready for contact by a push-rod of the plunger (124) so that it is delivered from the instrument through a box in a tip portion (114) of the instrument.
Claims59
A device for rolling a thin ophthalmic lens into a tubular configuration, comprising a pair of members slidable one relative to the other, one of the members serving to receive and locate the lens and the movement being arranged to cause rolling of the lens into the tubular configuration.
An instrument for inserting an intraocular lens into an eye, the instrument incorporating a device according to any preceding claim and delivering the rolled intraocular lens along an axis with which the lens is aligned in its tubular configuration.
An instrument for inserting a rolled intraocular lens into an eye, comprising a body portion having a longitudinal axis, a nose portion forward of the body portion and having a lumen through which the lens is arranged to pass, and a plunger movable through the body portion and the nose portion, the nose portion receiving a member which is slidable relative to the nose portion and serves to receive and locate a lens to be inserted, the relative sliding movement of the slidable member and the nose portion being arranged to cause rolling of the lens into a tubular configuration in which the lens is aligned with longitudinal axis and is engaged by the plunger as it moves through the lumen in the nose portion for insertion of the rolled lens into the eye.
A method of preparing an ophthalmic lens for insertion into an eye which comprises rolling the lens into a tubular configuration.
(canceled)
59-60. (canceled)
Dependencies are inferred from the claim text.