| 摘要 |
PURPOSE: A drug injection prevention device can control the injection button of an injection device if a storage where certain amount of drugs is stored is expanded than a predetermined level, thereby controlling the timing when a certain amount of drugs should be injected. CONSTITUTION: An injection device (10) comprises an injection button (12), a storage (20), a hook limit (17) and a plate push (15). As the injection button moves to where it can press the storage, the storage lets drugs flow through an outflow passage by the force of the pressure. The hook limit controls the injection button not to move to the point where it presses the storage until the storage is expanded to the maximum by the drugs which are flowed through the passage. When the storage is expanded the most, the plate push moves to where the injection button is located and pushes the hook limit so that the injection button can move to the point where it presses the storage. |
