Surgery – Instruments – Orthopedic instrumentation
Patent
1990-11-06
1991-08-06
Hafer, Robert A.
Surgery
Instruments
Orthopedic instrumentation
A61F 504
Patent
active
050374249
ABSTRACT:
An instrument for implanting an acetabular cup prosthesis in a patient's acetabulum. The cup is gripped on the base of the instrument and is aligned and inserted in accordance with a plane normal to the plane in which a patient is positioned and normal to a line between the right and left anterior/superior iliac spines. With the acetabular cup so aligned, the cup is impacted to be retained in a prepared acetabulum. The instrument is actuated for gripping the cup and is locked to maintain the cup gripped for the aforenoted alignment, insertion and impaction, and is thereafter unlocked and actuated for releasing the cup so that the instrument can be removed from the cup without disturbing the position thereof. The alignment of the cup is adjustable to accommodatae various implantation situations as may occur.
REFERENCES:
patent: 3859992 (1975-01-01), Amstutz
patent: 4100626 (1978-07-01), White
patent: 4305394 (1981-12-01), Bertuch, Jr.
patent: 4457306 (1984-07-01), Borzone
patent: 4475509 (1984-10-01), Oh
patent: 4632111 (1986-12-01), Roche
patent: 4662891 (1987-05-01), Noiles
patent: 4716894 (1988-01-01), Lazzeri et al.
patent: 4994064 (1991-02-01), Aboczky
Cuoco Anthony F.
Hafer Robert A.
Rimell Sam
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