Intervertebral spacer device having a domed arch shaped spring

Details Intervertebral spacer device having a domed arch shaped spring Intervertebral spacer device having a domed arch shaped spring

2005-03-22

2005-03-22

Willse, David H. (Department: 3738)

Prosthesis (i.e., artificial body members), parts thereof, or ai

Implantable prosthesis

Bone

C623S017160, C606S064000

Reexamination Certificate

active

06869446

ABSTRACT:
An intervertebral spacer device having a pair of opposing plates for seating against opposing vertebral bone surfaces, separated by a spring mechanism. The preferred spring mechanism is a domed arched strip spring which is coupled to the upper plate by set screws. The spring includes a socket formed in the peak thereof and mounts onto a ball-shaped head extending outwardly from the lower plate. The spring and post members are thereby flexibly coupled such that the upper and lower plates may rotate relative to one another.

REFERENCES:
patent: 5893889 (1999-04-01), Harrington
patent: 5989291 (1999-11-01), Ralph et al.
patent: 6179874 (2001-01-01), Cauthen
patent: 6607558 (2003-08-01), Kuras
patent: 6764515 (2004-07-01), Ralph et al.
patent: 2718635 (1995-10-01), None
patent: 2824261 (2002-11-01), None
patent: WO 200101893 (2001-01-01), None

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