Surgery – Instruments – Means for removing – inserting or aiding in the removal or...
Patent
1991-04-05
1992-09-15
Pellegrino, Stephen C.
Surgery
Instruments
Means for removing, inserting or aiding in the removal or...
294 992, 606205, 606210, A61B 1700
Patent
active
051473682
ABSTRACT:
The invention is directed to a nucleus splitter adapted to crack a hard nucleus of an eye after the nucleus has been sculpted by a pair of crossed grooves which set-off four quadrants of the nucleus. The nucleus splitter includes a pair of arms having first and second end portions united at a pivot with each end portion terminating in a relatively elongated narrow member having a laterally projecting nucleus splitting tip. The second end portions of the arms are generally resilient and normally urge the narrow members and tips into abutment with each other along the plane through an axis of the pivot. Finger and thumb pressure is applied to the medial portion of the arms causing the elongated narrow members to rock, pivot or spread apart and in doing so define an acute angle opening away from the pivot. In this position the elongated narrow members and the entirety of the first and second arms remain on the same side of the plane as in the unstressed condition of the medial portion.
REFERENCES:
patent: 3254649 (1966-06-01), Wood
patent: 4462404 (1984-07-01), Schwarz et al.
patent: 4785810 (1988-11-01), Baccala et al.
patent: 4844065 (1989-07-01), Faulkner
patent: 5002554 (1991-03-01), Korber
patent: 5014407 (1991-05-01), Boughten et al.
Dawson Glenn
Pellegrino Stephen C.
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