The present invention relates to a corkscrew, comprising a positioning cylinder, and the needle inflator; positioned symmetrically on both sides of the cartridge a notch opening, the upper end of the notch portion extends to the end to end of the positioning cylinder, the lower end extends close to the lower end to end positioning cylinder the position of the portion, at both sides of the positioning cylinder notches symmetrically arranged circular arc shape in cross section the elastic pressing disc, the lower end of the elastic pressing piece are connected to the lower end of the positioning tube and integrally formed on its upper end extends to near the end to end positioning cylinder portion of the position, horizontal and inwardly at both ends thereof, respectively, the upper end of the cutting blade is mounted; the central cylinder is provided with an upper end of the positioning pin holes; puncture needle hollow interior, with its upper air inlet, the lower end of the tip-side portion thereof is provided vent, the needle passes through the pinhole down, with inflation head puncture needle inflator inlet port in communication.