Puncture sleeve upper cover and puncture sleeve lower cover with high-precision sealing structure

The utility model discloses a puncture sleeve upper and lower cover with a high-precision sealing structure, which comprises a puncture core upper cover, the inner wall of the puncture core upper cover is fixedly connected with a release button, the two ends of the release button are provided with puncture core assemblies, the outer surfaces of the puncture core assemblies are fixedly connected with a sealing upper cover, and the sealing upper cover is fixedly connected with the puncture core upper cover. The lower surface of the sealing upper cover is fixedly connected with a self-adjusting sealing cap, the lower surface of the self-adjusting sealing cap is fixedly connected with a sealing lower cover, the lower surface of the sealing lower cover is fixedly connected with a puncture sleeve upper cover, and the inner surface of the puncture sleeve upper cover is fixedly connected with a puncture tube. After the whole device is assembled, the puncture sleeve upper cover can play a role in sealing and fixing, a