Polyaxial pedicle screw having a loosely coupled locking cap

Details Polyaxial pedicle screw having a loosely coupled locking cap Polyaxial pedicle screw having a loosely coupled locking cap

1998-06-12

2000-09-05

Buiz, Michael

Surgery

Instruments

Orthopedic instrumentation

A61B 1756

Patent

active

061136018

ABSTRACT:
A polyaxial pedicle screw for use with rod implant apparatus includes a rod receiving body, a screw having a curvate head, a compression element, and a means for loosely and reversibly maintaining a coupled relationship between the compression element and the screw head during angulation thereof relative to the rod receiving body, while still permitting compressive locking of the assembly in a specific orientation by means of a compressive force applied by a rod onto the compression element and the head of the screw.

REFERENCES:
patent: 5882350 (1999-03-01), Ralph et al.
patent: 5885286 (1999-03-01), Sherman et al.
patent: 5891145 (1999-04-01), Morrison et al.

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