Intraocular lens injector
OwnerCharles D. Kelmaninventor
Life of this patent
Estimating the term…
Abstract
An injector head forming a hollow cone of spreadable leaves is partially inserted into a minimum size eye incision to inject a temporarily folded intraocular lens into the eye without stressing the incision. An injector device having a holder with a bore holding the lens in folded state is connected to the cone, and a plunger of the device inserted in the bore pushes the lens into and through the cone for controlled gradual injection into the eye and simultaneous controlled gradual unfolding therein.
Claims15
Injector head for partial insertion into a minimum size eye incision to inject a temporarily folded intraocular lens into the eye, comprising
- a hollow cone having a base end and a generally pointed end, and defining a plurality of circumferentially distributed, cantilever leaves convergingly tapering from the base end to the generally pointed end, the leaves being sufficiently resiliently flexible for outward displacement from a normally closed position in which they are adjacent each other to an open position in which they are spread apart outwardly beyond the normal confines of the cone under the urging contact force of such folded lens, upon being injected through the cone, so as to allow such folded lens to be injected from the cone into the eye.
Injector assembly comprising an injector head portion for partial insertion into a minimum size eye incision to inject a temporarily folded intraocular lens into the eye, and an injector device portion,
- the head portion comprising a hollow cone having a base end and a generally pointed end, and defining a plurality of circumferentially distributed, cantilever leaves convergingly tapering from the base end to the generally pointed end, the leaves being resiliently flexible for outward displacement from a normally closed position in which they are adjacent each other to an open position in which they are spread apart to allow such folded lens to be injected through the cone into the eye, and
- the device portion comprising a holder having a plunger end and a delivery end interconnected by a longitudinal through bore adapted to hold such folded lens, and a longitudinal slot generally parallel to the bore and communicating the bore with the exterior of the holder, the delivery end being connected to the base end of the cone for connecting the bore with the cone, and a plunger insertable into the bore from the plunger end for controlled gradual delivery of the lens from the delivery end into and through the cone for controlled gradual injection of the lens into the eye and simultaneous controlled gradual unfolding of the lens within the eye.
Injector assembly comprising an injector head portion for partial insertion into a minimum size eye incision to inject a temporarily folded intraocular lens into the eye, and an injector device portion,
- the head portion comprising a hollow cone having a base end and a generally pointed end, and defining a plurality of circumferentially distributed, cantilever leaves convergingly tapering from the base end to the generally pointed end, the leaves being resiliently flexible for outward displacement from a normally closed position in which they are adjacent each other to an open position in which they are spread apart to allow such folded lens to be injected through the cone into the eye, and
- the device portion comprising a holder having a plunger end and a delivery end interconnected by a longitudinal through bore adapted to hold such folded lens, and a longitudinal slot generally parallel to the bore and communicating the bore with the exterior of the holder, the delivery end being connected to the base end of the cone for connecting the bore with the cone, and a plunger insertable into the bore from the plunger end for controlled gradual delivery of the lens from the delivery end into and through the cone for controlled gradual injection of the lens into the eye and simultaneous controlled gradual unfolding of the lens within the eye;
- wherein a lens inserter is included having a longitudinal contact edge for forcing the lens in unfolded state at the exterior of the holder, against and inwardly through the slot into the bore, to provide the lens in folded state in the bore.
Dependencies are inferred from the claim text.