六氟化硫和全氟丙烷不会从用旋塞阀封闭的塑料注射器中逸出。
Sulfur hexafluoride and perfluoropropane do not escape from a plastic syringe closed with a stopcock.
作者信息
Ohji M, Adachi F, Tano Y
机构信息
Department of Ophthalmology, Osaka University Medical School, Suita, Japan.
出版信息
Am J Ophthalmol. 1997 May;123(5):709-11. doi: 10.1016/s0002-9394(14)71094-3.
PURPOSE
To evaluate during various intervals of time the escape of long-acting gases contained in a plastic syringe closed with a stopcock or a plastic cap.
METHODS
A 60-ml plastic syringe was filled or partially filled with a long-acting gas, either sulfur hexafluoride or perfluoropropane. The tip of the syringe was closed with either a stopcock or the syringe's plastic cap. After various intervals of time, the concentration of the long-acting gas in the syringe was measured by gas chromatography.
RESULTS
The concentration of both long-acting gases was higher than 98% at 24 hours after filling when the syringe was closed with a stopcock; however, it was less than 41% when the syringe was filled and capped tightly with its plastic cap.
CONCLUSION
The proportion of long-acting gases escaping in 24 hours from a filled syringe capped with a stopcock is clinically insignificant.
目的
评估在不同时间段内，用旋塞阀或塑料帽封闭的塑料注射器中长效气体的逸出情况。
方法
一个60毫升的塑料注射器装满或部分装满长效气体，六氟化硫或全氟丙烷。注射器尖端用旋塞阀或注射器的塑料帽封闭。在不同时间段后，通过气相色谱法测量注射器中长效气体的浓度。
结果
当用旋塞阀封闭注射器时，两种长效气体在填充后24小时的浓度均高于98%；然而，当注射器用塑料帽紧密封闭时，浓度低于41%。
结论
用旋塞阀封闭的装满气体的注射器在24小时内逸出的长效气体比例在临床上无显著意义。
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