Puncture device sealing element assembling mechanism

The utility model belongs to the technical field of medical equipment and particularly relates to a puncture device sealing element assembling mechanism. The puncture device sealing element assembling mechanism solves the problem that an existing puncture device sealing element is not installed firmly enough. The puncture device sealing element assembling mechanism comprises a sleeve seat cover body with a puncture hole, the sleeve seat cover body is provided with a penetrating needle pipe body which is communicated with the puncture hole and extends downwards in the axial direction, the penetrating needle pipe body is provided with a sealing element, the sealing element comprises a cylindrical drum-shaped body with which the penetrating needle pipe body is sleeved, the end of the drum-shaped body is provided with a conical drum body, an axial positioning mechanism for axially positioning the drum-shaped body on the penetrating needle pipe body is arranged between the drum-shaped body and the penetrating needle pipe body, and a cone top of the conical drum body is provided with a through hole communicated with the penetrating needle pipe body. The puncture device sealing element assembling mechanism has the advantages that the puncture device sealing element assembling mechanism is simple in structure, convenient to assemble, high in stability and good in sealing effect, is installed firmly and does not leak air easily, and the sealing element is not turned up easily.