POSITIONING DEVICE FOR PROXIMAL BONE CHIP OF A LOWER JAWBONE IN SAGITTAL SPLIT RAMUS OSTEOTOMY

摘要

PROBLEM TO BE SOLVED: To eliminate disadvantages of a conventional method of repositioning a proximal bone chip of a lower jawbone.;SOLUTION: A positioning device includes: a bone gripping element 1 for gripping a proximal bone chip 4 of a lower jawbone; a positioning element 2 for gripping a reference point P2 set in an upper jaw; and a connection element 3 for fixing the positioning element 2 so as to adjust the position with respect to the bone gripping element 1. In a state that the bone gripping element 1 grips the proximal bone chip 4 and the positioning element 2 grips the reference point P2, the attitude of the positioning element 2 with respect to the bone gripping element 1 is fixed so that a three-dimensional positional relationship between the bone gripping element 1 and the positioning element 2 is recorded.;COPYRIGHT: (C)2014,JPO&INPIT