Adjustable single-handle and double-blade surgical knife

The utility model relates to an adjustable single-handle double-blade surgical knife which belongs to the technical field of surgical instruments and is composed of a handle, knife frames and blades, wherein, the knife frame is provided with a bidirectional knife trough which is matched with the blades. The front end of the handle is provided with a screw hole. A supporting rack A is fixed with a screw rod, and the supporting rack A at both ends of the screw rod is provided with a rectangular vacancy. One end of a supporting rack B and one end of a supporting rack C are respectively vertically fixed with a knife frame, and the other end of the supporting rack B and the other end of the supporting rack C are both provided with a rectangle vacancy. The three supporting racks are overlapped, the two knife frames respectively penetrate out of the rectangular vacancies at both ends of the supporting rack A, and the vacancies of the supporting rack B and the supporting rack C are overlapped. The screw rod penetrates out of the overlapped vacancies and is in screw-thread fit with the screw hole at the front end of the handle. The distance between the two blades of the surgical knife can be adjusted according to requirement.