Assembly for the stabilisation of vertebral bodies of the spine

Details Assembly for the stabilisation of vertebral bodies of the spine Assembly for the stabilisation of vertebral bodies of the spine

2002-06-17

2009-12-15

Robert, Eduardo C (Department: 3733)

Surgery

Instruments

Orthopedic instrumentation

C606S254000

Reexamination Certificate

active

07632292

ABSTRACT:
An assembly for the stabilisation of vertebral bodies (12, 14) of the spine is described. It comprises a pair of pedicle screws (20) each having a threaded shaft (20a) with a tapering first end (20b) for introduction into a vertebral body and a head portion (20c) with a second end (20d), and is characterised in that it further comprises a spring member (18, 22, 24, 40, 42, 44) of the following form. The spring member has first and second ends, substantially straight portions (18b) adjacent each end and a substantially curvilinear central portion (18a) therebetween, the straight portions and the substantially curvilinear central portion being substantially coplanar. The assembly also includes a pair of fixation mechanisms (26) for securing the first and second ends of the spring member to the pair of pedicle screws. Typically the assembly will be for stabilisation of two adjacent vertebral bodies of the spine, that is one motion segment.

REFERENCES:
patent: 3261244 (1966-07-01), Smoyak et al.
patent: 3271847 (1966-09-01), Millheiser
patent: 4743260 (1988-05-01), Burton
patent: 5415611 (1995-05-01), Krayenhagen
patent: 5415661 (1995-05-01), Holmes
patent: 5645599 (1997-07-01), Samani
patent: 6267764 (2001-07-01), Elberg
patent: 6572653 (2003-06-01), Simonson
patent: 2 735 351 (1996-12-01), None
patent: 2 799 949 (2001-04-01), None
patent: WO 98/22033 (1998-05-01), None

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