目的 研制一种辅助费森尤斯透析机匹配集中供液系统A液侧的零压力自动供液装置。方法 将2019年11至12月进行血 液净化治疗的患者经知情同意分为两组，一组为对照组，治疗时使用A桶装液和B桶装液，共50例次丨另一组为观察组，治 疗时使用本研究设计装置提供的A浓缩液和B桶装液，共48例次，在98例次血液净化治疗完成之后，统计观察组和对照组的 患者在进行血液净化治疗时，每个治疗周期中，透析机内部供液系统故障次数以及对护士进行两种供液方式的便捷性评价 的调查，并分析所收集数据。结果 两种供液方式对透析机内部供液系统稳定性的差异无统计学意义（P>0.05），观察组供 液方式的便捷性评价分值显著高于对照组（P<0.05）。结论 本研究设计的匹配集中供液A液侧的零压力自动供液装置能保 证透析机稳定性的同时提高操作的便捷性，值得推广。

Objective To develop a zero-pressure automatic liquid feeding device to assisted the Fresenius dialyzer matching the liquid side of centralized supply A. Methods Patients who used this Fresenius dialysis machine for blood purification treatment from November to December of 2019 were randomly divided into two Group, one group was the control group, and uses the A barrel liquid and B barrel liquid during treatment, a total of 50 cases, the other group was the observation group, the treatment used the A concentrated liquid and B barrel liquid provided by the above device, a total of 48 cases. After 98 blood purification treatments were completed, the patients in the observation group and control group were performing blood purification treatment. During each treatment cycle, the number of failures of the liquid supply system inside the dialysis machine and the two Investigation of the convenience evaluation of the liquid supply method, and analysis of the collected data. Results The difference of the corresponding liquid supply method between the control group and the observation group has no statistical significance to the stability of the liquid supply system inside the dialysis machine (P>0.05). The evaluation score of convenience of liquid delivery method in observation group was significantly higher than that in control group (P<0.05). Conclusion The automatic liquid feeding device which designed in this study to assist matching the liquid side of centralized supply A can ensure the stability of the dialyzer and improve the convenience of operation, which is worth popularizing