Buckling type puncture outfit

The utility model relates to a buckling type puncture outfit, which belongs to the technical field of medical instruments and comprises a cannula component and a puncture needle component. The sleeve assembly comprises a sleeve and a sealing cap arranged at the top end of the sleeve, a clamping groove is formed in the outer ring of the sealing cap, an inverted-cone-shaped sealing film is arranged in the sealing cap, and a through hole is formed in the center of the sealing film. The puncture needle assembly comprises a puncture needle and a buckling piece arranged at the top of the puncture needle, the buckling piece comprises a holding part, a plurality of buckling plates and a plurality of reset springs, the center positions of the buckling plates are hinged to the holding part, the reset springs correspond to the buckling plates in a one-to-one mode, one ends of the reset springs make contact with the holding part, and the other ends of the reset springs make contact with the upper portions of the correspo