Surgical locking screw and driver arrangement

Details Surgical locking screw and driver arrangement Surgical locking screw and driver arrangement

2011-03-08

2011-03-08

Robert, Eduardo C (Department: 3733)

Surgery

Instruments

Orthopedic instrumentation

C411S406000

Reexamination Certificate

active

07901413

ABSTRACT:
A surgical screw and driver arrangement whereby the end of the driver is vertically inserted and removed from the slotted end of the surgical screw and whereby the end of the driver is attached to and removed from the slotted end of the surgical screw by a quarter turn in the clockwise and counterclockwise directions.The driver includes an inner shaft connecting with a center locking cam at one end of the driver and an outer shaft that connects with a pair of blades, one on each side of the locking cam.The surgical screw includes a slotted head at one end and a tapered threaded rod attached to the head. A pair of dovetail slots extending perpendicular within the slotted head receives the locking cam when the driver inner shaft is rotated a quarter turn clockwise to fasten the surgical screw to the end of the driver.

REFERENCES:
patent: 2905215 (1959-09-01), Hlynsky
patent: 4497225 (1985-02-01), Vaughn
patent: 5353667 (1994-10-01), Wilner
patent: 2005/0169729 (2005-08-01), Nowak

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