Poly-axial bone screw mating seat

Details Poly-axial bone screw mating seat Poly-axial bone screw mating seat

2011-01-11

2011-01-11

Robert, Eduardo C (Department: 3733)

Surgery

Instruments

Orthopedic instrumentation

C606S305000, C606S313000

Reexamination Certificate

active

07867257

ABSTRACT:
The present invention is directed a poly-axial bone securing system including a bone securing member and a coupling element. The coupling element includes an opening to permit the bone securing member to pass therethrough and a seat for contacting a head portion of the bone securing member. The opening including a discrete number of contact surfaces or points for engaging the head portion of the bone securing member so that discrete frictional or gripping forces may be generated at interface points of each contact surface or point.

REFERENCES:
patent: 2002/0032443 (2002-03-01), Sherman et al.
patent: 2005/0080415 (2005-04-01), Keyer et al.
patent: 2005/0187548 (2005-08-01), Butler et al.
patent: 2005/0203516 (2005-09-01), Biedermann et al.
patent: 2005/0277927 (2005-12-01), Guenther et al.
International Search Report for PCT/US2007/06537 dated Dec. 4, 2007.

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