Sealed lubrication system and method for dynamic...

Details Sealed lubrication system and method for dynamic... Sealed lubrication system and method for dynamic...

2011-08-23

2011-08-23

Robert, Eduardo C (Department: 3733)

Surgery

Instruments

Orthopedic instrumentation

C606S246000, C606S257000, C606S266000, C606S300000, C606S301000, C623S017110

Reexamination Certificate

active

08002807

ABSTRACT:
A dynamic screw assembly includes a fixation component that connects to a vertebral body, the fixation component includes at least one inlet to allow a lubricant to pass inside the fixation component, a ring member coupled to the fixation component, a stopper sealing at least one inlet, a coupling member includes an inwardly curved bottom portion and a bulbous end extending from the inwardly curved bottom portion, a bumper mechanism coupled to the fixation component and the coupling member, a longitudinal member coupled to the coupling member, and a blocker that retains the longitudinal member in the coupling member. The bulbous end includes at least one groove that houses the lubricant, and at least one slot to allow the bulbous end to fit into the fixation component and to limit a range of angulation of the coupling member with respect to the fixation component.

REFERENCES:
patent: 6554831 (2003-04-01), Rivard et al.
patent: 6692529 (2004-02-01), Shah
patent: 6966910 (2005-11-01), Ritland
patent: 7361196 (2008-04-01), Fallin et al.

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