Abstract: An instrument is disclosed for use with implants, particularly for use in implanting retinal implants into the sub-retinal space of an eye. The instrument includes a handpiece and an inserter attachment. The handpiece includes a first sliding member movably disposed within a longitudinal channel of the handpiece and comprising finger portions adapted to couple and retain the inserter attachment to the handpiece. A nose member of the handpiece includes at least two recesses for mating with a locating pin in the inserter attachment for maintaining alignment of the inserter attachment. The inserter attachment includes a pusher cap that is biased to retain a pusher in a retracted position. Also, an inserter tip of the inserter attachment includes a cover that defines a space for and helps retain the implant within the inserter attachment.

Abstract: A digital fluid delivery and aspiration apparatus with a mechanical de-amplifier for the delivery or removal of discrete volumes of fluidic material from a surgical site. The apparatus has a syringe with a plunger designed to be powered by a pneumatic air supply system. A ratcheting mechanism attached to a pneumatic piston by a mechanical linkage causes the plunger of the syringe to inject discrete doses of the fluidic material into the surgical site or remove discrete amounts of fluidic material from the surgical site. The mechanical linkage increases the force provided to the plunger by the movement of the piston and also de-amplifies the movement of the piston into a lesser movement of the plunger.