A percutaneous method of repairing a fissure in the annulus pulposus comprises placing an energy source adjacent to the fissure and providing sufficient energy to the fissure to raise the temperature to at least about 45-70 C. and for a sufficient time to cause the collagen to weld. An intervertebral...http://www.google.de/patents/US6517568?utm_source=gb-gplus-sharePatent US6517568 - Method and apparatus for treating intervertebral discs
