本刊今年3月号介紹的王永生同志改进的“安全虹吸管”有一定的优点,但也存在着一些缺点,主要如药液經口吸处流出而使药液污染;球形玻管既不易制造又易破碎;使用不便,不易清洗,球形玻管存有余液。为此,我另行设计了一种安全虹吸管,如下。 Comrade Wang Yongsheng’s improved “safety siphon tube” introduced in March this year has certain advantages, but there are also some shortcomings, such as the liquid from the mouth through the mouth and contaminating the liquid; the spherical glass tube is not easy to manufacture. Easy to break; inconvenient to use, difficult to clean, spherical glass tube with residual liquid. For this purpose, I designed a safety siphon separately as follows.