The present invention relates to a jig to be closely attached to the back surface of vertebra, which is produced by a 3D printer based on CT scan information to guide a perforation position and an entry angle of screw, and more specifically, to a technology which draws a direction of the back surface of vertebra, while the orientation of the spinous process is referred as a back surface in this paper, and an entry path of a proper screw with a 3D program such as CATIA, auto CAD, and the like, based on a three-dimensional structure of spine, which has been obtained by CT scan of a patient and then produces a gripping body which is capable of being accurately attached to vertebra by having a form of an engraving of the back surface of spine, and a guiding unit for guiding a screw perforation position and an entry angle to allow the screw and vertebra to be easily fastened, using the 3D printer. The jig comprises: a pair of gripping bodies (100) which is in the form of an engraving of a part of spinous process (201), lamina, and a rear part of both of articular processes based on the spinous process (201) of vertebra (200), so as to be accurately attached a guide hole (101) which accommodates the screw (300) on the outer edge of the both of articular processes (202), so as to guide the screw to the direction of pedicle and engaging portios (102, 203) which engage with a border area pertaining to the gripping bodies (100) or articular processes (202) on the inner wall or the convex portion formed on the spinous process (201).COPYRIGHT KIPO 2016본 발명은 척추뼈의 천공 위치와 스크류의 진입각도를 안내 하도록 CT촬영 정보를 바탕으로 3d프린터로 제작한 척추뼈 배면 밀착용 지그에 관한 것으로 상세하게는 환자의 CT촬영으로 확보한 척추의 입체구조를 바탕으로 3d(카티아, 오토케드 등)프로그램으로 척추뼈의 배면방향(극돌기 방향을 이건에서 배면이라 칭함)과 올바른 스크류의 진입경로를 작도한 다음 척추 배면의 음각 형태를 띠어 척추뼈에 정확히 밀착시킬 수 있는 파지부몸체와 척추뼈에 스크류 체결이 용이하도록 스크류 천공부위와 진입각도를 안내하는 안내부를 3d프린터로 제작 하는 기술에 관한 것이다.구성은 다음과 같다척추뼈(200)의 극돌기(201)를 기준으로하여 극돌기(201)의 일부와, 후궁판, 양쪽 상관절돌기(202) 일부 배면의 음각 형태를 띠어 정확히 밀착시킬 수 있는 한쌍의 파지부몸체(100)와 상기 양쪽 상
