Controlled friction fit for tapered luer fitting

A medical device for with the section of tapered tip for together; the fixing device comprises a housing, wherein the housing is provided with a section of tapered cavity opening and near end and a wherein channel. The cavity is the pipeline component. Slow-release elements to locate in hub's channel, a preventing needle is tapered tip and hub liquid sealing bottoms of the. Claims a structure comprises two to the release element at least one part, applying near direction on the housing of the power invention provides, the sharp end and hub sudden liquid sealing bottoms of the.