A system and method for approaching the intervertebral disc through a percutaneous insertion from the back of a patient for thermal or electromagnetic treatment of an intervertebral disc, includes an elongated probe member having a guidable region adjacent its distal end with an undulating groove defined...http://www.google.ca/patents/US20020065541?utm_source=gb-gplus-sharePatent US20020065541 - Apparatus and method for treatment of an intervertebral disc
