Disclosed are surgical tools, tool sets and methods for percutaneously accessing and preparing treatment sites within the spine for subsequent treatment procedures. The treatment site may be an inter-vertebral motion segments in the lumbar and sacral regions of the spine. The tool set may comprise introducer...http://www.google.fr/patents/US8052613?utm_source=gb-gplus-shareBrevet US8052613 - Spinal nucleus extraction tool
