| 摘要 |
Infusion apparatus comprising a first burette (2), a second burette (3) and a connector, said burettes communicating in series with each other through said connector (6), said connector having a first passageway (4) therethrough for establishing communication between said first and second burettes, said connector having a second passageway (5) therein communicating with and adapted to introduce air into said second burette, and directional control valve means (7) positioned across both said first and second passageways and adapted to close said first passageway when said second passageway is opened and to open said first passageway when said second passageway is closed. |
