SAFETY INJECTOR

摘要

A safety injector, comprising an outer sleeve (1), a push rod (2), a rubber plug (3) and a screw opening (4). The outer sleeve (1) is perpendicularly disposed, the push rod (2) is inserted into the outer sleeve (1) from a lower end opening of the outer sleeve (1), the rubber plug (3) is sheathed on the push rod (2) and is located in the outer sleeve (1), a rubber plug mounting opening (21) and a breakage notch (22) are provided at the upper part of the outer circumferential face of the push rod (2) in sequence from top to bottom, and a push rod boss (23) is disposed at the top end of the push rod (2). The screw opening (4) is inserted into the outer sleeve (1) from an upper end opening of the outer sleeve (1). The push rod boss (23) is inserted into the screw opening (4) from a lower end opening of the screw opening (4). The safety injector has a simple structure and is convenient to operate. A used injector can be prevented from being repeatedly used by damaging the shape of the injector.