| 摘要 |
PURPOSE: To prevent an injection needle from reusing to eliminate danger of infection by reusing, by slidably attaching a protective sleeve on the outside of a trunk part to which an injection needle is attached and advancing the protective sleeve to a safe position to completely cover the injection needle. CONSTITUTION: This disposable safe injector is constituted of a trunk part 1, an injection needle 4 attached to the front end thereof, and a slidable plunger 6. A manually movable shaft part 7 is protruded from the rear end of the trunk part and a protective sleeve 12 is slidably attached to the outside of the trunk part 1 to cover the injection needle 4. The protective sleeve 12 is held by a lock means 25 onto the trunk part 11 advanced to a safe position. Further, the protective sleeve 12 retreated to a stationary position is fixed to the trunk part 1 by fastcening means 16, 17. A releasing means 19 is placed on the rear end part of the shaft part 7 to release the fastening means 16, 17 when advancing of the plunger 6 is completed upon injection. Thereby the protective sleeve 12 is moved to the safe position. |
