INNER RETRACTOR INSTRUMENT FOR SPINE PERCUTANEOUS ENDOSCOPIC SURGERY

摘要

PROBLEM TO BE SOLVED: To solve a problem in which only one instrument can be inserted in the lumen for work of a spine percutaneous endoscope in the cervical spine herniated disk resection under the percutaneous endoscope of back entry, and therefore a herniated disk cannot be resected safely by avoiding nerves.;SOLUTION: An inner retractor instrument of this invention has a diameter slightly smaller than the lumen for work, is a cylinder capable of being inserted therein, and is capable of inserting forceps into the lumen of the inner retractor instrument, in which the tip end is shaped in a thin spatula of 1/4 of a circle. Operation is made possible by two pieces of a retractor and the forceps in a little safety area in the cervical spine spinal canal, and thereby surgery can be performed safely.;SELECTED DRAWING: Figure 7;COPYRIGHT: (C)2020,JPO&INPIT