Dual-chamber bacteria-tight delivery system

Abstract

The present application relates to the field of medical packaging, in particular to a double-chamber bacteria blocking delivery system, comprising: a bottle body, the inside of which is blocked by a piston; a positioning sleeve, which is sealingly fixed on the bottle body and elastically connected with the piston; a push rod sleeve, which is sealingly sleeved on the positioning sleeve and connected with the piston, the push rod sleeve being provided with a liquid outlet hole and a gas return hole, the gas return hole being provided with a hydrophobic bacteria blocking filter membrane; a kinematic pair with locking function, which is arranged between the push rod sleeve and the positioning sleeve; a drop head, which is movably sleeved on the push rod sleeve and provided with a drop hole; a delivery assembly, which is arranged between the push rod sleeve and the drop head and axially elastically contacts the push rod sleeve, the delivery assembly being provided with a liquid outlet channel, the liquid outlet channel being always connected with the liquid outlet hole and being connected with the drop hole in a manner of being connected in a continuous mode and disconnected in a discontinuous mode; and a gas return channel, which is arranged between the push rod sleeve and the drop head. The present application has the advantages of high safety in transportation and storage, convenient operation and no need of additional placement of preservatives.

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