| 摘要 |
A parenteral liquid administration set which is readily changeable between delivering liquid at measured "rate" through a drip chamber that has a constant liquid level, and delivering liquid from the chamber in a measured "volume" with a progressively lowering liquid level. A valve system on a top of an enlarged semi-rigid measuring chamber functions to selectively change between "rate" and "volume" delivery. In one version there is also a secondary drip chamber below the enlarged semi-rigid measuring chamber so the set can simultaneously indicate "rate" and "volume" delivery. |
