Surgical implant delivery with dual mode drive

An apparatus for eye surgery, the apparatus comprising:

• a housing;
• a key mount coupled to the housing, the key mount comprising a key track and a catch;
• a bore through the housing;
• a plunger disposed in the bore;
• a push rod coupled to the plunger and operable to move from a first rod position to a second rod position and a third rod position within the bore, the push rod comprising:
• a keyway,
• a slide track, and
• threads;
• and
• a plunger key, the plunger key comprising:
• a shank disposed within the key track,
• a tip coupled to one end of the shank, the tip having one or more thread tracks,
• a snap fitting coupled to the shank, and
• a lug coupled to the snap fitting;
• wherein:
• the shank is operable to move the tip from a first key position to a second key position and a third key position, and the lug is configured to engage the catch in each of the first key position, the second key position, and the third key position,
• in the first key position, the tip is disposed in the keyway,
• in the second key position, the tip is configured to engage the slide track between the first rod position and the second rod position, and
• in the second key position, the thread tracks are configured to engage the threads.

An apparatus for delivering an implant to an eye, the apparatus comprising:

• a nozzle;
• an implant bay coupled to the nozzle;
• an implant disposed in the implant bay;
• a housing;
• a bore through the housing;
• an actuator, the actuator comprising:
• a plunger disposed within the bore, and
• a push rod at least partially disposed in the bore and operable to move the plunger from a first plunger position to a second plunger position and a third plunger position within the bore;
• and
• a plunger key coupled to the housing and operable to move between a first key position, a second key position, and a third key position;
• wherein the plunger key in the first key position prevents the push rod from moving the plunger from the first plunger position, in the second key position allows the push rod to slide the plunger through the bore from the first plunger position to the second plunger position and to rotate to move the plunger to the third plunger position to advance the implant from the implant bay through the nozzle, and in the third key position allows the push rod to slide the plunger through the bore from the second plunger position to the third plunger position to advance the implant from the implant bay through the nozzle.