APPLIANCE FOR SELF-INJECTION OF MEDICAL FLUID AND DEVICE USING THE SAME

PURPOSE:To provide a medical fluid self-injection appliance for the self-injection of a medical fluid shortened in a re-filling time, capable of arbitrarily selecting an administration dose, capable of being prepared at low cost and not generating trouble such as a leak. CONSTITUTION:A medical fluid self-injection appliance consists of a casing 1 having a chamber 4 filled with a medical fluid, an inlet port 4 and an outlet port 7 formed thereto, the gasket inserted in the casing 1 in a liquidtight state, a push button 14 attached for the sake of the self-operation of a patient and the spring 21 energing the gasket 13 in a push-back direction. When the patient lets go his hold of the push button 14, the gasket 13 returns to 1 the original position immediately by the repulsive force of the spring 21 and the chamber 4 becomes negative pressure to suck the medical fluid by itself. Therefore, the chamber 3 can be refilled within an extremely short time.