Ophthalmic lens injectors
OwnerTerence Arnold Waldockinventor
Life of this patent
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Abstract
An instrument for the insertion of an intraocular lens into an eye comprises a body portion, e.g. a barrel, a nose portion having a lumen through which the lens passes, and a push rod connected to a plunger. Within the nose portion is an insert (30) which defines a passageway (40) therethrough. The passageway has a configuration which includes a smoothly continuous undulating surface (42, 44) upon which a lens rests. A cutout (52) accommodates the trailing haptic. For acrylic lenses, the undulating surface is preferably provided by a recess in the bottom of the passageway, the recess reducing in width and depth to define an upwardly sloping surface on which the lens is deposited.
Claims12
An instrument for the insertion of an intraocular lens into an eye, which comprises a body portion, a nose portion forwardly of the body portion and having a lumen through which the lens is arranged to pass, and push rod means moveable through the body portion and the nose portion to push an inserted lens forwards, wherein there is provided in the nose portion means defining a passageway therethrough, the passageway having a configuration which includes a smoothly continuous undulating surface upon which a lens to be inserted is arranged to rest.
An instrument according to any preceding claim, in which the undulating surface comprises two upstanding arcuate ribs at the bottom of the passageway.
An instrument according to any preceding claim, in which the nose portion is pivotable through 90° relative to the body portion.
An instrument according to any preceding claim, in which the lateral sides of the passageway are recessed to accommodate a lens of 6, mm diameter.
Dependencies are inferred from the claim text.