Adapter for mixing and injection of preparations

摘要

An adapter for mixing and injection of preparations comprises a cylindrical vial-fitting portion (1), a puncture needle (2) and a tubular tip-fitting portion (3). The vial-fitting portion (l) includes a top wall (11) and a skirt (12). The puncture needle (2) is passed through the top wall (11) and is integrated therewith. The tip-fitting portion (3) is arranged coaxially to the puncture needle (2) on the opposite side thereof to the top wall (11). The puncture needle (2) has a cutting edge (21) on the side of the skirt (12) and is provided at a proximal end thereof with a connecting portion (22) for engagement with the tip-fitting portion (3). The puncture needle (2) has a fluid passage (23), which communicates with a lumen (32) of the tip-fitting portion (3) and is open to the cutting edge (21). A filter (4) is arranged in the liquid passage (231) of the connecting portion (22).