Maxillary bone movement accurate positioning device for LeFort I type osteotomy

The invention provides a maxillary bone movement accurate positioning device for LeFort I type osteotomy and belongs to the technical field of clinical medicines. The maxillary bone movement accuratepositioning device is composed of two parts including positioning device body and individualized preoperative splints. One individualized preoperative splint is pre-produced for preoperative model surgery; before the osteotomy, the individualized preoperative splint is worn; then the positioning device body is fixed on a maxillary bone and a mandibular bone above a maxillary osteotomy line throughfixing bodies in a maxillary bone fixing region and a mandibular bone fixing region respectively; after positions are recorded, the positioning device body is detached and conventional maxillary boneLeFort I type osteotomy is carried out; in a surgery, a conventional LeFort I type osteotomy pre-produced splint is worn to guide the maxillary bone to be positioned roughly; then the positioning device body is mounted again;