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US 4,785,809 AGranted
Arteriotomical device
OwnerHarry P. Weinribinventor
Life of this patent
Estimating the term…
Abstract
A surgical instrument cuts openings in tissue with a more precise and consistent size. The instrument includes a lifter having a hook for hooking a portion of the tissue and for lifting the hooked tissue relative to a gauge. Pivotally mounted cutters on the instrument are swung towards the lifted tissue to sever the lifted tissue leaving an opening of a known size in the tissue.
Claims13
A surgical instrument for severing living tissue, said device comprising:
- a body,
- a lifter mounted on the body for vertical movement relative to the body,
- a hook means on the lifter for hooking the tissue and for lifting the tissue relative to the body through a predetermined distance,
- movable cutter means on the body movable from a non-cutting position to a cutting position to cut the tissue lifted by the hook means to form a cut of a predetermined size because of the lifting of the tissue through a predetermined distance, said hook means being centered on said body and lifting the tissue relative to the cutter means, said cutter means comprising
- a pair of pivotally mounted legs on said body each carrying a cutting blade for swinging toward one another to sever the tissue therebetween.
2 more elements
An arteriotomical device for severing an opening in a vessel wall having an interior lumen and an interior surface on the vessel wall, said device comprising:
- a body having a pair of pivotally mounted legs movable from an open position to a closed severing position,
- a lifter mounted on the body for vertical movement relative to the legs,
- cutters on lower ends of each leg movable from the open position to the severing position to a portion of the vessel therebetween, and
- a hook on the lifter for insertion through the vessel wall and hooking the interior surface of the vessel wall for lifting a hooked portion of the vessel interior surface relative to the cutters through a predetermined distance, pivoting of the cutters from the open position toward the severing position causing the lowermost edges on the cutters to pass through the vessel wall along a path to sever an aperture of a predetermined size in the vessel's interior surface and to sever a hole through the vessel wall.
1 more element
Dependencies are inferred from the claim text.