一种可及时清除冷凝水的呼吸机呼气阀储水杯设计

Design of reservoir cup for timely removal of condensate at ventilator exhalation valve

目的:针对呼吸机使用中冷凝水清除不便及存在气溶胶扩散的风险,设计一种可及时清除冷凝水的呼气阀储水杯。方法:该储水杯由暂存瓶、集液瓶、密封机构和连接机构组成。暂存瓶上端与呼吸机的呼气阀连接,内部有暂存冷凝水的容纳腔,底部设置有与外部连接的通孔。集液瓶瓶口可伸入通孔,且瓶口上有若干个侧孔。密封机构设置在暂存瓶底部,包括磁铁和磁性密封板,磁铁在容纳腔底面,磁性密封板吸附在磁铁上密封通孔。连接机构设置在暂存瓶与集液瓶之间,包括环形套筒、内螺纹和外螺纹。结果:采用该储水杯可在不拆卸呼吸机检修盖的前提下及时清除留存在呼吸机管路中的冷凝水,且在排液时维持机械通气状态,不影响患者呼吸机的辅助治疗,并能最大程度减少气溶胶在操作区域的扩散。结论:该储水杯使用方便、安全,能快速清除冷凝水,有效缩短细菌在呼吸管路中的存留时间。

Objective To design an exhalation valve reservior cup to solve the problems of removal of the condensate and prevention of aerosol diffusion.Methods The reservior cup was composed of a temporary storage bottle,a liquid collection bottle,a sealing mechanism and a connection mechanism.The temporary storage bottle was connected to the exhalation valve of the ventilator at the upper end,which was provided with an internal holding chamber for temporary storage of the condensate and a through hole at the bottom for connection to the outside.The mouth of the liquid collection bottle could be inserted into the through hole,and there are a number of side holes on the mouth.The sealing mechanism at the bottom of the temporary storage bottle was made up of a magnet and a magnetic sealing plate,of which,the magnet was on the bottom surface of the holding chamber and the magnetic sealing plate was adsorbed to the magnet to seal the through hole.The connection mechanism between the temporary storage bottle and the liquid collection bottle consisted of an annular sleeve,an internal thread and an external thread.Results The reservior cup facilitated timely elimination of the condensate in the ventilator pipeline without removing the access cover,maintaining mechanical ventilation during drainage for the ventilator-assisted therapy and minimizing the risk of aerosol diffusion in the operating area.Conclusion The reservoir cup with high convenience and safety eliminates the condensate quickly and shortens the retention time of bacteria in the ventilator pipeline effectively.