Surgery – Instruments – Orthopedic instrumentation
Patent
1992-02-20
1994-05-17
Apley, Richard J.
Surgery
Instruments
Orthopedic instrumentation
606 72, 606 73, A61F 500
Patent
active
053124049
ABSTRACT:
An apparatus is provided to retain elements of the spine or pelvis or both in a desired spatial relationship. A plurality of fasteners are connected with a plurality of the elements. A longitudinal member is connected with that fasteners by a plurality of connector members. The longitudinal members and fasteners are movable relative to each other to adjust the distance between the longitudinal member and fasteners to thereby obtain the desired spatial relationship. Clamps are engaged to hold the longitudinal member, fasteners, and connector members against relative movement. To provide for adjustability, oblong openings are formed in the connector members. The fasteners have a plurality of tapered washers to create variable angles between the axis of the fastener and the axis of the oblong opening.
REFERENCES:
patent: 4433676 (1984-02-01), BoBechko
patent: 5002542 (1991-03-01), Frigg
patent: 5133717 (1992-07-01), Chopin
Asher Marc A.
Carson William L.
Heinig Charles F.
Stripggen Walter E.
AcroMed Corporation
Apley Richard J.
Reichard Lynne A.
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