An intervertebral disc device is provided comprising a distal probe sized to be extended from a distal end of an introducer that is percutaneously delivered into an interior of an intervertebral disc, a distal section of the probe comprising a flexible neck which tapers in a proximal to distal direction,...http://www.google.fr/patents/US6733496?utm_source=gb-gplus-shareBrevet US6733496 - Intervertebral disc device employing flexible probe
