Surgery – Instruments – Orthopedic instrumentation
Patent
1994-02-28
1994-09-13
Lewis, Ralph A.
Surgery
Instruments
Orthopedic instrumentation
606 93, 604272, A61F 504
Patent
active
053464958
ABSTRACT:
A method and apparatus for applying methyl methacrylate under pressure into the top surface of a human tibial bone which apparatus is a solid molded one piece unit body with three rodlike extensions emanating from the body therefrom. A first rodlike extension has a solid cylindrically shaped head on its top side for receipt of a slaphammer and the long central axis of this extension is virtually co-axial with the long central axis of a second rodlike extension and sharp beveled end located at the base of the second rodlike extension just below a circular stop piece which beveled end for burrowing into bone is farther from the cylindrically shaped head than any other part of the one piece unit. The unit's third rodlike extension extends out and away from the first rodlike extension and has located atop it, a hollow head containing threading for receipt of the base of a cement carrying canister and with a hole in the center of the hollow head's bottom surface leading into a cement carrying canal running throughout this rodlike extension in a straight line and then in the same line through the body of the one piece unit to a point where an extension of the canal it courses downward leading to and through the beveled end.
REFERENCES:
patent: 3112743 (1963-12-01), Cochran et al.
patent: 3255747 (1966-06-01), Cochran et al.
patent: 4627434 (1986-12-01), Murray
patent: 4653489 (1987-03-01), Tronzo
patent: 4815454 (1989-03-01), Dozier, Jr.
patent: 4896662 (1990-01-01), Noble
patent: 4935008 (1990-06-01), Lewis, Jr.
patent: 4966601 (1990-10-01), Draenert
Lewis Ralph A.
Welch John J.
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