An injector for an intraocular lens includes a housing with a cannula, a receiving chamber for the intraocular lens, and a plunger that can be moved within the housing. The plunger is adapted to move the intraocular lens out of the receiving chamber and through the cannula. The injector includes a rotary element for moving the plunger. The rotary element is mounted on the plunger for rotation and axial translation thereon.

The object of the invention is an injector (1) for implantation of an intraocular lens, having a base body (10) and an elongated actuation element (11), which projects at least partly into a rear section of the base body (10) and which is movably guided in an actuation axis (12), and wherein a movement of the actuation element (11) into the base body (10) can be generated selectively by means of a push actuation (P) along the actuation axis (12) or by means of a screw actuation (S) about the actuation axis (12), and wherein the actuation element (11) features an external thread (13) at least on one section, wherein at least one spring arm (14) is arranged at the base body (10), wherein the spring arm (14) has a thread engagement structure (15) on an inner surface facing the external thread (13), and wherein a switch element (16), which can be rotated about the actuation axis (12), is arranged on the base body (10) and has a passage, through which the actuation element (11) extends, wherein the passage features at least one inner surface (17) having an inner radius (Ri) varying at least in sections in a circumferential direction, and wherein an outer surface (18) of the spring arm (14) is in contact with the inner surface (17) of the switch element (16), so that upon a rotation of the switch element (16) about the actuation axis (12), due to the varying inner radius (Ri) at the circumferential position of the spring arm (14), an elastic deformation of the spring arm (14) towards the actuation axis (12) and away from the actuation axis (12) can be generated, whereby the thread engagement structure (15) can be selectively engaged or disengaged with the external thread (13).

The invention is directed to an injector device for introducing an intraocular lens into an eye. The injector device defines a longitudinal axis and includes an injector tip having a through guide channel for the intraocular lens. The channel has a rear inlet and a front outlet. A cassette accommodates the intraocular lens therein and two closure tips are configured for closing the cassette. The closure tips extend in the direction of the longitudinal axis axially farther rearwardly than the rear inlet. A method for prefolding the intraocular lens in the cassette is also disclosed.

Various systems and techniques for inserting an intraocular lens are disclosed. In particular implementations, a system and a technique for inserting an intraocular lens may include the ability to move, in response to a force being applied in a first direction along a longitudinal axis, a first plunger tip along the longitudinal axis and into a delivery cartridge to fold an intraocular lens and move in a second direction along the longitudinal axis in response to the applied force being reduced. The system and the technique may also include the ability to engage a second plunger tip and move, in response to a force being applied in the first direction along the longitudinal axis, the second plunger tip along the longitudinal axis and into the delivery cartridge to insert the intraocular lens.

It is provided an intraocular lens insertion system that achieves a preferable insertion of an intraocular lens without using viscoelastic material in an eyeball. The intraocular lens insertion system includes an intraocular lens insertion apparatus configured to use a predetermined driving force to move an intraocular lens and insert the intraocular lens into an eyeball, an irrigating solution infusion apparatus configured to infuse irrigating solution into the eyeball, a driving source configured to deliver the predetermined driving force to the intraocular lens insertion apparatus, an irrigating solution source configured to deliver the irrigating solution to the irrigating solution infusion apparatus, and a switching unit configured to switch in a multistage manner a control of a delivery of the irrigating solution from the irrigating solution source to the irrigating solution infusion apparatus and a control of a delivery of the predetermined driving force from the driving source to the intraocular lens insertion apparatus.

Various systems and techniques for inserting an intraocular lens are disclosed. In particular implementations, a system and a technique for inserting an intraocular lens may include the ability to move, in response to a force being applied in a first direction along a longitudinal axis, a first plunger tip along the longitudinal axis and into a delivery cartridge to fold an intraocular lens and move in a second direction along the longitudinal axis in response to the applied force being reduced. The system and the technique may also include the ability to engage a second plunger tip and move, in response to a force being applied in the first direction along the longitudinal axis, the second plunger tip along the longitudinal axis and into the delivery cartridge to insert the intraocular lens.

An inserter, system and method for inserting an IOL may include a lumen having an outer wall and an inner wall that includes at least one hollowed portion; a plunger for advancing along the lumen and having a plunger shaft extending into an open proximal end and terminating at a distal plunger end; a reservoir within the lumen between the distal plunger end and the distal insertion tip, having an opening that is misaligned with the at least one hollowed portion prior to advancing of the plunger, and that is aligned with the at least one hollowed portion during advancing of the plunger; and a viscous fluid within the lumen that flows along a bypass formed of the at least one hollowed portion and the opening and into the reservoir, decreasing an inserting displacement force effected at the distal insertion tip from a plunger displacement force applied to said plunger.

An injector for inserting an intraocular lens into a capsular bag of an eye includes an injector body having an injector tip defining an opening. The injector body has a proximal end facing away from the opening and has a distal end. A first piston is directed toward the opening and is configured to contact and displace the intraocular lens. A second piston is operable from outside of the injector and the first piston and the second piston are each configured to be longitudinally displaceable along the injector axis. A handle is operated from outside of the injector and is configured to be coupled to the first piston so that when the pistons are in the decoupling state, the first piston is displaced toward the opening and relative to the second piston by moving the handle.

An intraocular lens implantation injector has a base body and elongated actuation element projecting into a base body rear section and movably guided along an actuation axis. Actuation element movement is generated selectively by axial push actuation or by screw actuation about the axis. The actuation element features an external thread at least on one section. A switch element arranged on the base body is rotatable about the axis and has a passage, through which the actuation element extends. A spring arm arranged at the base body has an inner surface thread engagement structure facing the external thread. The passage features in inner surface having an inner radius varying at least in sections in a circumferential direction. A spring arm outer surface contacts the switch element inner surface. Switch element rotation generates spring arm elastic deformation towards/away from the axis, whereby the thread engagement structure is selectively engaged or disengaged.

There is provided an intraocular lens injector configured to inject an intraocular lens having an optical portion 8 and a pair of support portions 9a, 9b, including: an injector main body 2 having a lens setting portion 6 on which the intraocular lens 7 is set; a pushing member 5 that pushes out the intraocular lens 7 from the lens setting portion 6 by moving in a direction of a central axis of the injector main body 2; and a guide slope 11 that guides the movement of the pushing member 5 when the pushing member 5 moves in the direction of the central axis of the injector main body 2, wherein when the pushing member 5 moves in the direction of the central axis of the injector main body 2, a tip end part of the pushing member 5 comes into contact with the support portions 9b of the intraocular lens 7, and comes into contact with the optical portion 8 while pushing the support portions 9b, and the guide slope 11 guides the movement of the pushing member 5 so that the tip end part of the pushing member 5 is displaced in a vertical direction.