| abstract |
PROBLEM TO BE SOLVED: To embed a reamer needle in a pipe and completely cover it in a process of collecting a drug solution and seal it in a process of collecting and administering a drug solution, so that the drug solution leaks out or is injured by a reamer needle. To provide a closed system dispensing and dispensing device without risk. A closed system dispensing and dispensing device includes a push barrel and a connection base, the push barrel includes an outer cylinder, an inner cylinder, and a push rod, the inner cylinder is provided in the outer cylinder, and the push rod is vertically movable. Is provided in the inner cylinder, the outer cylinder includes an intake pipe, the inner cylinder includes a chemical liquid intake pipe, the connection base includes a connection cover, two reamer needles, an elastic valve and a water stop member, and the elastic valve is The water blocking member is provided in the connection cover and selectively covers the outer sides of the two reamer needles, and the water blocking member is provided in the connection cover and corresponds to the internal space of the reamer needle corresponding to the intake pipe. doing. [Selection diagram] Figure 1 |