Ophthalmic injector
OwnerTerence Arnold Waldockinventor
Life of this patent
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Abstract
An ophthalmic injector for the insertion of segments of material into the eye comprises a barrel (11), a plunger (24) displaceable within the barrel, a nose (14) and a nose tip (16). A rotatable carousel-type holder (22) for the segments is mounted in the nose for stepwise indexing movement. The segments are pushed in turn from the holder by a centre rod (30) connected to the plunger, through the nose and along a guide channel in the nose tip. The nose (14) and the nose tip (16) are pivotable through 90° relative to the barrel. Alternatively, the segment holder can be a linearly movable holder, indexable transversely across and through the barrel. The holder can carry nine segments. The injector can be used for the insertion of segments used in the treatment of hyperopia.
Claims18
An ophthalmic injector comprising a barrel, a plunger displaceable longitudinally within the barrel, a nose tip forwardly of the barrel, and a segment holder arranged to hold a plurality of segments to be inserted into incisions in the eye, the segment holder being displaceably stepwise and being positioned so that the segments are engageable in turn by the plunger or an extension thereof to push them from the holder through the nose tip.
An ophthalmic injector according to any preceding claim, in which a nose is mounted at the forward end of the barrel, and the nose tip is mounted at the forward end of the nose, the nose and nose tip being pivotable relative to the barrel through 90°.
An ophthalmic injector according to any preceding claim, in which the nose tip has a guide channel for the segments extending the length of the tip.
An ophthalmic injector according to any preceding claim, in which the forward end of the plunger has a stepped configuration.
An ophthalmic injector according to any preceding claim, in which the segment holder is arranged to hold nine segments.
An ophthalmic injector according to any preceding claim, in which the segment holder is adapted to hold segments suitable for the treatment of hyperopia.
Dependencies are inferred from the claim text.