The utility model provides a bone anchorage type maxillary
distraction osteogenesis device which comprises a spiral expansion device, and a rear base plate of the spiral expansion device is fixed to the rear half section of the maxillary bone through a left anchorage nail and a right anchorage nail. The front base plate and the rear base plate are respectively connected with at least two belt rings through belt ring connecting rods, the left front belt ring and the right front belt ring connected with the front base plate are at least sleeved on the first front molars on the corresponding sides, and the left rear belt ring and the right rear belt ring connected with the rear base plate are sleeved on the first molars and / or the second molars on the corresponding sides; the two front band rings are connected through a labial arch, and a lip baffle is fixed in the middle of the labial arch; a traction hook matched with a front
tractor is fixedly connected to the outer ring face of the rear belt ring. According to the utility model, the
osteotomy gap between the first
premolar and the second
premolar can be stably and effectively stretched, so that the aim of correcting skeletal
hypoplasia or repairing bone defects is fulfilled.