SAFETY SYRINGE

摘要

A safety syringe with a needle storage mechanism capable of preventing the needle storage mechanism from being operated before use. The safety syringe comprises an injection tube (1) having a connection part (11) at its tip and opened at its base end, a needle assembly (B) having an injection needle (5) and a needle base (6) fixed to the base end of the injection needle (5) and connectable to the connection part (11), a gasket (2) slidably installed fluid-tight in the injection tube, and a plunger (3) connected to the base end of the gasket (2). A joining means (21) is installed at the tip part of the gasket (2) or the plunger (3), and a joined means (61) is installed at the base end part of the needle base (6). The safety syringe is characterized by comprising a joining prevention means (90) capable of preventing the joining means (21) and the joined means (61) from being inadvertently joined to each other before use and allowing them to be joined to each other when used.