Artificial intervertebral disc flexibly oriented by...

Details Artificial intervertebral disc flexibly oriented by... Artificial intervertebral disc flexibly oriented by...

2006-01-10

2006-01-10

Robert, Eduardo C. (Department: 3732)

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

Implantable prosthesis

Bone

C623S017120

Reexamination Certificate

active

06984246

ABSTRACT:
An artificial intervertebral disc includes: an upper retaining member secured to an upper vertebra; a lower retaining member secured to a lower vertebra adjacent to the upper vertebra; and a nucleus member flexibly resiliently formed between the upper and the lower retaining members having at least an outer and an inner bellows each reinforced and integrally formed with a helical spring to define an outer annulus between the outer and inner bellows and a core formed within the inner bellows.

REFERENCES:
patent: 5674294 (1997-10-01), Bainville et al.
patent: 6187043 (2001-02-01), Ledergerber
patent: 6264695 (2001-07-01), Stoy
patent: 6582466 (2003-06-01), Gauchet

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