Intraocular lens implanting instrument
An instrument for implanting an elastically deformable intraocular lens has a forceps jaw, a stationary member and operations structure. The operations structure includes members capable of enabling the sequential (i) placing the lens in the undeformed state on the stationary member, (ii) closing the forceps jaws to fold the lens into its folded state and forming a folding chamber with a nozzle at its end, and (iii) pushing of the lens in its folded state axially out of the folding chamber through the nozzle so as to allow the lens to expand from its folded state to its undeformed state.
1 . An instrument for implanting an elastically deformable intraocular lens in an eye, the intraocular lens being capable of being alternatively disposed in a folded state and in an undeformed state, said instrument comprising:
(a) forceps jaws defining an open position and a closed position;
(b) a stationary member; and
(c) operating means for enabling the sequential
(i) placing the lens in the undeformed state on the stationary member,
(ii) closing the forceps jaws to fold the lens into its folded state and forming a folding chamber with a nozzle at its end, and
(iii) pushing of the lens in its folded state axially out of the folding chamber through the nozzle so as to allow the lens to expand from its folded state to its undeformed state.
2 . The instrument of claim 1 wherein the forceps jaws are arcuate.
3 . The instrument of claim 1 wherein the forceps jaws consist of a pair of forceps jaws attached to forceps legs which are supported by a supporting member.
4 . The instrument of claim 1 wherein the forceps jaws are opened and closed by an actuating lever.
5 . The instrument of claim 4 wherein the forceps jaws are locked in the closed position by a locking pin.
6 . The instrument of claim 1 wherein the operating means comprises a pushing member.
7 . The instrument of claim 6 wherein the pushing member is operated by a pusher button.
8 . The instrument of claim 1 wherein the forceps jaws are rotatable.
9 . The instrument of claim 8 wherein the forceps jaws are rotatable via counter rotating pivot shafts.
10 . The instrument of claim 8 wherein the forceps jaws comprise a pair of forceps jaws, a stationary jaw and a pushing jaw.
11 . An instrument for implanting an elastically deformable intraocular lens in an eye, said instrument comprising:
(a) forceps jaws;
(b) a stationary member; and
(c) operating means for enabling the sequential
(i) placing the lens in the undeformed state on the stationary member with the pushing element located at an edge of the optic, and
(ii) closing the forceps jaws to fold the lens and form a-folding chamber with the nozzle at its end, and
(iii) pushing of an elastically deformed intraocular lens axially out of the formed nozzle insertion end region for expanding into its undeformed shape.