Preloaded IOL injector
View Patent ↗A preloaded intraocular lens injection device includes a retainer for releasably holding an IOL in an unstressed state. The retainer and IOL are removably attached to an injector body and are sealed in the same package for delivery to a surgeon. In an alternate embodiment, the retainer and IOL are coupled together and sealed in one package and the injector body is sealed in a separate package with the surgeon attaching the retainer to the injector body at the time of surgery. To deliver the IOL through the injector body, the retainer is removed from the injector body causing the IOL to release from the retainer and become located in an unstressed state in the injector body. A compressor is moved to the closed position to compress the IOL, the injector tip is inserted through a small incision in an eye and a plunger is advanced to push the IOL through and out the injector body tip and into an eye.
1. A method for loading an IOL into an internal passageway of an injector body having a proximal end, a distal tip and a longitudinal axis extending therebetween, the method comprising the steps of:
a) providing a retainer releasably coupled to said IOL, said retainer being removably coupled to said injector body;
b) providing a stripper element located between said IOL and said retainer, said stripper element extending between said retainer and said IOL;
c) removing said retainer from said injector body, the act of removing causing the retainer to cease to be coupled to said IOL, due to interference of the IOL with the stripper element the IOL being at least partially located in said internal passageway;
d) providing a compressor disposed at an opening in the injector body intermediate the proximal end and the distal tip, said compressor movable in a direction across the longitudinal axis between an open position and a closed position with respect to said injector body, said compressor being in said open position when said retainer is coupled to said injector body and said IOL is held by said retainer; and
e) following the step of removing said retainer from said injector body, moving said compressor to said closed position and thereby compressing said IOL in said open passageway.
2. The method of claim 1 , further comprising a step of packaging said injector body, said retainer and said IOL together while said retainer is coupled to said injector body and said IOL is releasably coupled to said retainer.
3. The method of claim 1 , and further comprising a step of:
f) providing a plunger having a plunger tip in said open passage and advancing said plunger therethrough, thereby pushing said IOL with said plunger tip to eject said IOL from said injector body.
4. The method of claim 1 , and further comprising a step of applying a viscoelastic to one or both of said IOL and said open passageway prior to said compression step.
5. The method of claim 1 , wherein said IOL has an optic and a trailing haptic extending from said optic, the method further comprising steps of:
f) providing a plunger having a plunger tip in said open passageway for advancing said IOL through said open passageway; and
g) relatively positioning said retainer with said IOL releasably held thereby and said plunger in said open passageway such that upon removal of said retainer and release of said IOL therefrom into said open passageway, said trailing haptic becomes located rearwardly of said plunger tip such that upon advancing said plunger through said open passageway, said plunger tip engages said IOL optic without contacting said trailing haptic.
6. The method of claim 1 , further comprising steps of:
f) providing said IOL with an optic and a leading haptic extending from said optic;
g)providing a haptic puller having a haptic puller tip removably inserted into said open passageway and adapted to engage and straighten said leading haptic within said distal end upon removing said haptic puller from said injector body; and
h)relatively positioning said retainer with said IOL releasably held thereby and said haptic puller in said open passageway such that upon removal of said retainer and release of said IOL therefrom into said open passageway, said leading haptic becomes located adjacent said haptic puller tip.
7. The method of claim 1 , further comprising steps of:
e) providing said IOL the LOL having leading and trailing haptics extending from said optic;
f) providing a plunger having a plunger tip in said open passageway for advancing said IOL through said open passageway;
g) providing a haptic puller having a haptic puller tip removably inserted into said open passageway and adapted to engage and pull said at least one haptic out of said distal end upon removing said haptic puller from said injector body; and
h) relatively positioning said retainer with said IOL releasably held thereby, said plunger, and said haptic puller in said open passageway such that upon removal of said retainer and release of said IOL therefrom into said open passageway, said trailing haptic becomes located on the side of said plunger tip opposite said optic, and said leading haptic becomes located adjacent said haptic puller tip.
8. The method of claim 1 , wherein said compressor and said stripper element are connected and move together whereby the step of moving said compressor to said closed position causes said stripper element to move.