Double-needle concurrent fascia stitching instrument

The invention belongs to the technical field of medical equipment, and provides a double-needle concurrent fascia stitching instrument. The instrument comprises an instrument body, a chuck, an openingand closing control structure, a constraint structure and a winding puncture structure. A movement mode is set through the opening and closing control structure, the chuck is controlled to be opened,locked or closed for clamping, a suture line is restrained and bound through the constraint structure, the suture line penetrating through double needles is driven by the winding puncture structure to puncture the fascia layer together, and the two ends of the suture line are driven to be left on the inner side of the chuck, so that the technical defects of repeated winding and repeated needle advancing and retreating caused by independent operation of existing closers and existing suture threading devices are overcome. A fascia threading device and a closer are of an integrated structure, aninnovative scheme that dou