Suturing device for heart defect

The invention discloses a suturing device for a heart defect. A hauling rope is arranged in a transmission channel, the lower end portion of the transmission channel is hinged to rotary stitches, therotary stitches are connected with the hauling rope, so that the hauling rope drives the rotary stitches to be in positions which are parallel with the transmission channel or form a set angle with the transmission channel. Lead holes are formed close to two end portions of the rotary stitches, lower butt-joint devices are arranged in the lead holes respectively, an upper butt-joint device is arranged in the transmission channel, and the upper butt-joint device is connected with sutures. The lower ends of the lower butt joint devices at the two ends of the rotary pins are connected via a connecting line. The upper ends of the upper butt joint devices are connected with a pushing stitch, and a pushing device pushes the pushing stitch further to drive the upper butt-joint device to make lockjoint with the lower butt-joint devices. The suturing device is simple in the total structure, can be used to treat heart septal defect effectively via a complete interventional therapy, reduce secondary damage on a patient and further reduce the risk of treating the patient.