Surgical stitching instrument driving device

The invention provides a surgical stitching instrument driving device. The surgical stitching instrument driving device comprises a ratchet mechanism, a cam mechanism, a transmission gear, a first push rod, a second push rod, a trigger, a shell, a limiting assembly and a spring assembly. The first push rod and the second push rod are controlled at the same time to conduct linear motion, operation is conducted only with one hand, and operation inconvenience caused by double-hand operation is avoided; the first push rod and the second push rod are driven through a ratchet wheel-cam mechanism, the shape of a cam is designed, so that one step in the suture operation is completed every time a trigger is pulled, the whole suture operation can be completed only by pulling the trigger, and operation is convenient; the first cam and the second cam are arranged on the output gear, the first cam, the second cam and the output gear are combined into one part, the number of parts is reduced, and the size of the device is