We have been studying Percutaneous Intradiscal Laser Discectomy for herniated lumbar discs. The efficasy of this method has been already comfirmed by the basic experiments using rabbit or goat lumbar discs. In this time the safety, the easiness and the accuracy of our original PILK system is going to introduce. And the procedure of our method was charachtered with the use of a tip type pressure tranceducer.
