| abstract |
The invention relates to an osteotomy surgical instrument with a specific external aimer, comprising: a first main body part with an upper guide edge for forming a cutting track; a second main body part with a lower guide edge and arranged Below the upper guide edge, a guide groove is formed between the upper guide edge and the lower guide edge to guide the saw blade for sawing, and the guide groove has a connecting portion in it to connect the upper guide edge and the lower guide edge; an external sighting device, which has an engaging portion and at least one aiming hole, the engaging portion is engaged with the connecting portion, and the aiming hole is used to confirm the direction of the saw. |