Intraocular lens implanter

A device for deforming and ejecting a deformable intraocular lens for insertion into a small incision in an eye, the device comprising a) a housing, b) a lens transporting duct in a front part of the housing defining a duct axis, the duct having a front end with a cross-section adapted to the lens in deformed state with small maximum dimensions transversal to the duct axis, a rear lens-receiving end with a cross-section adapted for the lens in undeformed state, or less deformed state, than at the front end, with larger maximum dimensions lateral to the duct axis than at the front end and an intermediate convergent duct part between the front and rear ends with a varying cross-section shape, having decreasing maximum dimensions lateral to the duct axis in a direction from rear to front in the duct and c) a plunger operative to displace the lens in the duct at least in the forward direction, wherein over at least a part of the duct axial length, the duct cross-section area is substantially constant in a forward direction in the duct over said at least part of the duct axial length.

A device for deforming and ejecting a deformable intraocular lens for insertion into a small incision in an eye, the device comprising a) a housing, b) a lens transporting duct in a front part of the housing defining a duct axis, the duct having a front end with a cross-section adapted to the lens in deformed state with small maximum dimensions transversal to the duct axis, a rear lens-receiving end with a cross-section adapted for the lens in undeformed state, or less deformed state, than at the front end, with larger maximum dimensions lateral to the duct axis than at the front end and an intermediate convergent duct part between the front and rear ends with a varying cross-section shape, having decreasing maximum dimensions lateral to the duct axis in a direction from rear to front in the ducts and c) a pushing plunger operative to push the lens in the duct at least in the forward direction, wherein the plunger is re-shapable at least in its front between a first form with an elongation degree larger than 1 and a second form with an elongation degree less than that in the first form, the elongation degree being the lateral to height extension ratio.

A device for deforming and ejecting a deformable intraocular lens for insertion into a small incision in an eye, the device comprising a) a housing, b) a lens transporting duct in a front part of the housing defining a duct axis, the duct having a front end with a cross-section adapted to the lens in deformed state with small maximum dimensions transversal to the duct axis, a rear lens-receiving end with a cross-section adapted for the lens in undeformed state, or less deformed state, than at the front end, with larger maximum dimensions lateral to the duct axis than at the front end and an intermediate convergent duct part between the front and rear ends with a varying cross-section shape, having decreasing maximum dimensions lateral to the duct axis in a direction from rear to front in the duct, c) a plunger operative to displace the lens in the duct at least in the forward direction, d) a lens receiving chamber at the rear end of the duct having a seat for the lens in un-deformed or slightly deformed state in a position adapted to be abutted and pushed by the plunger, and e) fixture structures arranged for preventing lens rotation.

An device for at least ejecting a deformable intraocular lens for insertion into a small incision in an eye, the device comprising a) a housing, b) a lens transporting duct in a front part of the housing defining a duct axis, the duct having a front end with a cross-section adapted to the lens in deformed state with small maximum dimensions transversal to the duct axis, suitable for insertion through the incision in the eye, a rear end and an intermediate duct part between the front and rear ends and c) a plunger system comprising a plunger, operative to displace the lens in the duct at least in the forward direction, and a driver for the plunger, and d) at least one track and at least one follower, one of said track and follower being arranged, directly or indirectly, on the housing and the other of said track and follower being arranged, directly or indirectly, on said driver, the track and follower being arranged to cooperate to give a programmed movement between the driver and housing, the program requiring a rotational movement of the driver for advancing the plunger front in a rear part of the duct and allowing a substantially axial movement of the driver for advancing the plunger front in a front part of the duct.