| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a discharge device for a liquid, especially a medicine liquid. <P>SOLUTION: The discharge device includes a feeding device 10, a liquid storage container 20 for storing the liquid 30 communicating with the inlet 10a of the feeding device 10, and an exhaust outlet 12 communicating with the outlet 10b of the feeding device 10. At least a part of the liquid storage container 20 is dimensionally a flexible liquid containing bag 20-shape, and the liquid storage container 20 is arranged inside a buffer chamber 42 with a fixed capacity. The buffer chamber is sealed with a protection housing from an environment 1 at an airtight mode in order to prevent air from escaping from the buffer chamber 42, the buffer chamber communicates with the environment through at least one capillary passage for an objective of pressure compensation, the buffer chamber communicates with the environment 1 through a balanced passage for an objective of pressure compensation, and a valve 70 opened depending on a pressure difference is arranged in the balanced passage. <P>COPYRIGHT: (C)2011,JPO&INPIT |
