Intraocular lens inserter and system and method regarding same
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.
1. A method of providing for insertion of an IOL, comprising:
providing a lumen having inserted therein a plunger, and having an inner wall including at least one hollowed portion, and further having therein a viscous fluid in fluid communication with a distal end of the plunger and with a reservoir having an opening that is misaligned with the at least one hollowed portion prior to an advanced actuation of the plunger and that is aligned with the at least one hollowed portion during an advanced actuation of the plunger;
upon the advanced actuation of the plunger, providing a bypass pathway for the viscous fluid into the reservoir and formed of the at least one hollowed portion and the opening, such that a displacement at a distal end of the reservoir is non-linear with the actuation of the plunger; and
providing for the insertion of an IOL upon at least near-completion of the actuation of the plunger.
2. The method of claim 1 , wherein the advanced actuation comprises a greater than 50% actuation.