| 摘要 |
369,037. Medical pumps. WADA, Y., 100, Kitasanban-cho, Sendaishi, Japan. April 22, 1931, No. 11915. [Class 81 (ii).] A surgical pumping apparatus comprises a rotatable cylinder 1 provided with a helical fin 2, and a series of strips 4, pivoted on a rod 10 and pressed down successively by the fin on to an elastic conduit, such as a rubber tube .5, which is always closed at one or more points. The apparatus is used for withdrawing or injecting liquid or gas. |
