Occlusion instrument

The invention relates to a plugging instrument which is used for perforation of treatment room intervals and comprises a plugging net rack and a covering film, and the covering film covers at least part of the surface of the plugging net rack; the plugging net rack comprises two plugging discs which are oppositely arranged and a waist part for connecting the two plugging discs; the waist part is used for being accommodated in the ventricular septum through hole; the two plugging discs are used for clamping the myocardium in the ventricular septum perforation along two axial ends in an unconstrained state; the two plugging discs each comprise a plurality of independently-arranged supporting feet, and all the supporting feet in each plugging disc are sequentially arranged in the circumferential direction around the longitudinal axis of the plugging net frame. According to the invention, the damage to myocardial tissues can be effectively reduced, the safety is higher, and the clamping is more stable and reliabl