Medical forceps instrument for implanting intraocular lenses
OwnerJarmila Dusek, Vaclav Dusekinventors
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Abstract
Elongated generally horizontal blades are spaced apart vertically and have proximate handle end portions and distal grasping end portions. By manipulation of the handle end portions, the grasping end portions can be brought together into clamping engagement. The lower grasping end portion is return bent and includes a marginal portion offset laterally from the remainder of the lower blade. The upper grasping end portion is movable downward alongside the lower blade so as to engage against such laterally offset marginal portion of the lower grasping end portion. The composite forceps-type instrument is useful for implanting intraocular lenses during cataract surgery, particularly for positioning the superior haptic of an intraocular lens in a lens capsule.
Claims22
In a medical forceps instrument including first and second generally horizontally elongated blades each having a proximate end, a handle end portion adjacent to said proximate end, a distal end and a grasping end portion adjacent to said distal end, the first blade having a lower generally horizontal elongated support arm carrying the grasping end portion of the first blade and extending therefrom to the handle end portion of the first blade, the second blade having an upper generally horizontal elongated support arm carrying the grasping end portion of the second blade and extending therefrom to the handle portion of the second blade, the lower support arm normally being disposed no higher than the upper support arm with the grasping end portions of the blades spaced apart but the first and second blades being connected such that their grasping end portions are movable together into clamping engagement by manipulation of the handle end portions of the blades, the improvement comprising the grasping end portion of the first blade having an underslung bend of substantially return bend configuration and a first grasping surface extending from said bend generally toward the handle end portion of the first blade, said first grasping surface facing upward toward the underside of the lower support arm, the grasping end portion of the second blade having a second grasping surface on the underside thereof movable into clamping engagement with said first grasping surface by manipulation of the handle end portions of the blades.
In a medical forceps instrument including first and second generally horizontally elongated blades each having a proximate end, a handle end portion adjacent to said proximate end, a distal end and a grasping end portion adjacent to said distal end, the first blade having a lower horizontal support arm carrying the grasping end portion of the first blade and extending therefrom to the handle end portion of the first blade, the second blade having an upper horizontal support arm carrying the grasping end portion of the second blade and extending therefrom to the handle portion of the second blade, the lower support arm normally being disposed no higher than the upper support arm with the grasping end portions of the blades spaced apart but the first and second blades being connected such that their grasping end portions are movable together into clamping engagement by manipulation of the handle end portions of the blades, the improvement comprising the grasping end portion of the first blade being hooked so as to form a mouth below the lower support arm which mouth opens proximally toward the handle end portion of the first blade and having a grasping surface in the lower portion of said mouth facing upward, the grasping end portion of the second blade having a grasping surface on the underside thereof movable into clamping engagement with said grasping surface of the first blade so as to close said mouth and being movable relatively away so as to open said mouth.
In a medical forceps instrument including first and second generally horizontally elongated blades each having a proximate end, a handle end portion adjacent to the proximate end, a distal end and a grasping end portion adjacent to the distal end, each of the blades having a generally horizontally elongated support arm carrying the grasping end portion of such blade and extending therefrom to the handle end portion of such blade, the improvement comprising the grasping end portion of the first blade having an underslung bend of substantially return bend configuration about an axis extending below and transversely of the support arm of such first blade and including a first grasping surface extending from said bend generally toward the handle end portion of the first blade, the grasping end portion of the second blade having a second grasping surface on the underside thereof, said first grasping surface of the first blade facing upward toward the underside of the grasping end portion of the second blade in vertical alignment with said second grasping surface, the first and second blades being connected such that their grasping end portions are relatively movable vertically substantially perpendicular to the axis of the underslung bend by manipulation of the handle end portions of the blades between a closed position in which the grasping surfaces are in clamping engagement and an open position in which the grasping surfaces are spaced apart vertically.
Dependencies are inferred from the claim text.