Patent ID: 9649129
Date: 2017-05-16
CPC Classifications: A61B

Claim:
1. A method for performing a percutaneous extraforaminotomy with foraminal ligament resection, comprising: a first step of examining various ligaments around intervertebral foramen; a second step of deciding an insertion position of a trocar according to a ligament structure around the intervertebral foramen; a third step of inserting the trocar toward a target point for resection through the skin of facet joint at an exit zone of the intervertebral foramen; a fourth step of inserting the trocar into a cannula and then separating the trocar to secure a space for inserting subsequent tools; a fifth step of inserting an endmill having a knife blade tip with a spiral structure into the cannula, turning the endmill to scratch ligaments attached to the facet joint, and detaching the scratched ligaments in the intervertebral foramen; a sixth step of separating the endmill from the cannula, inserting a curret into the cannula, additionally detaching the scratched ligaments attached to the facet joint, and scraping residue to expand the size of the intervertebral foramen; and a seventh step of inserting a catheter into the intervertebral foramen to transmit a chemical material to the periphery of nervous branches causing pain, and discharging an inflammatory material existing in a spinal column and the intervertebral foramen with the chemical material through the expanded intervertebral foramen.