Retractor for mandibular angle resection preventing vessel and nerve damage

摘要

More particularly, the present invention relates to a retractor for use with a square jaw, which can prevent damage to nerves and blood vessels caused by a saw tooth when a sawtooth is inserted behind an ear to cut a square jaw . The rectangle retractor retractor according to an embodiment of the present invention includes a retractor for inserting a saw blade that is inserted into the back of the patient's ear and is located inside the mandible of the patient to prevent the saw blade from being deviated to the inside of the mandible, 1 departure prevention portion; And a second departure prevention portion protruding upward from a distal end of the first departure prevention portion to prevent the saw blade from being separated from a side of the mandible in front of the mandible.;