中文摘要：

目的：观察一次性减压式流产吸管的使用效果和可接收性。方法：采用多中心随机对照研究方法；在5家医院或计划生育服务机构选择600例妊娠35～56天、〈40岁健康妇女，随机使用一次性减压吸管或金属吸管进行负压吸宫术，比较两种吸管的使用效果。结果：减压式吸管在疼痛、出血、手术时间以及人工流产综合征的发生率方面略好于金属吸管，但差异无统计学意义（P〈0．05）；观察对象对减压式吸管的满意度高于金属吸管，差异有统计学意义（P〉0．05）。结论：一次性减压式吸管适用于终止孕56天内的早期妊娠；与传统的金属吸管相比，在减少术时人工流产综合征、出血以及术后阴道流血和月经持续时间上具备一定优势，而且为一次性产品，降低了医源性感染的风险，值得临床使用。

英文摘要：

Objective： To observe the clinical effectiveness and acceptability of decompressed suction tube. Methods： A randomized, multi-centre clinical trial was performed. 600 eligible women were assigned into single-use decompressed suction tube group and metal suction tube group randomly. Vaccum aspiration were performed by the two type tube respectively. Results： Decompressed suction tube was little better than metal tube at the incidence of pain, bleeding, the abortion syndrome and the duration of operating time, but the difference were not statistically significant（P 〉0.05）. The subjects were more satisfied with the decom- pressed suction tube than with the metal tube（P 〈0.05）. Conclusion： Decompressed suction tube is applicable to vaccum suction before 56 days pregnancy. When compared with the metal tube, it has potential superiority on decreasing the incidence of abortion syndrome, pain and bleeding during the abortion, postoperative vaginal bleeding and menstrual duration. Moreover, it avoids the risk of hospital infection because it is a deposed instrument, which is worth widely being used clinically.