| 摘要 |
The closure part is formed by a flat plug which is longitudinally displaceable within a nipple of the suction bottle, the flat plug being displaceable from its basic position on the outside of transverse openings of the nipple, past the transverse openings, into its closing position just in front of the inner end of the nipple, in which closing position it is located at a greater distance from the transverse openings than the length between an end edge and sealing place of a drainage-tube connecting plug serving as a ram for the flat plug. |
