Screw and driver

Details Screw and driver Screw and driver

1990-09-05

1992-08-18

Hafer, Robert A.

Surgery

Instruments

Orthopedic instrumentation

606104, A61B 1758

Patent

active

051394995

ABSTRACT:
A screw and driver combination designed so that the screw is releasably axially couplable with the driver and so that the screw is positively rotatably engageable with the driver. The screw comprises an axial bore of circular cross section and a counterbore of polygonal cross section. The driver comprises a radially-compressible front portion sized to engage the axial bore of the screw with a minor spring interference fit and an intermediate portion sized to positively rotatably engage the counterbore of the screw. The screw and driver may be adapted for use with a guide wire insertion system by providing axial bores extending through the entire lengths of the screw and driver. The driver may include a mechanical expansion assembly for causing said said front portion to expand radially.

REFERENCES:
patent: 1410088 (1922-03-01), White
patent: 2593622 (1952-04-01), Stanelle
patent: 2686447 (1954-08-01), Vock et al.
patent: 2775913 (1957-01-01), Deliso
patent: 3289290 (1966-12-01), Sandor
patent: 4171662 (1979-10-01), Simone et al.
patent: 4325153 (1982-04-01), Finnegan
patent: 4950270 (1990-08-01), Bowman et al.
Zimmer Advertisement Jul. 1956.
Mueller & Co. Bone Surg. Instr. Nov. 1937.

Affiliated with

Also associated with

Rating

Screw and driver does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Screw and driver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Screw and driver will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1245192