Surgery – Truss – Perineal
Patent
1986-04-29
1988-07-05
Yasko, John D.
Surgery
Truss
Perineal
128 92YS, 411 83, 411403, A61F 504, F16B 3900
Patent
active
047547499
ABSTRACT:
A unitary surgical screw is disclosed for the internal fixation of an acromio-clavicular separation by mechanically maintaining the clavicle in a fixed position with respect to the coracoid once the separation has been reduced. The surgical screw includes a short, cylindrical head; a smooth, cylindrical shank portion; and a helically threaded distal end portion. A transverse slot is recessed partially into the top surface of the head of the screw. One or more inclined holes extend through the head of the screw from the bottom of the transverse slot to the underside of the head. After the separation has been reduced and the screw properly installed, a locking pin is inserted through one of the inclined holes and staked to the clavicle to prohibit rotation of the screw. The surgical screw may include an axial bore, concentric with the longitudinal axis of the screw, for receiving an elongated guide pin for aiding the axial alignment of the screw prior to its installation.
REFERENCES:
patent: 324768 (1885-08-01), Hunt
patent: 2242003 (1941-05-01), Lorenzo
patent: 2355900 (1944-08-01), Beede
patent: 3424212 (1969-01-01), Kemper
patent: 3474537 (1969-10-01), Christensen
patent: 3579831 (1971-05-01), Stevens et al.
Depuy Manufacturing Company Inc., Warsaw, Ind., sales catalog, p. 126.
Lewis Ralph
Spencer B. F.
Yasko John D.
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