中文摘要：

目的：观察新型控压水刀在经尿道膀胱肿瘤切除术中的应用效果。方法回顾性分析2015年4月至8月行经尿道膀胱肿瘤水刀切除术的12例患者临床资料。结果12例患者手术均顺利完成，术中估计出血量均小于5 ml，手术时间为20～45 min（中位时间28 min），其中注水时间8～15 min （中位时间12 min）。未发生严重并发症。术后随访4～10个月，经膀胱镜检查均未见肿瘤复发或进展。结论在经尿道膀胱肿瘤切除术中应用新型控压水刀是安全可行的，并具有一定优势。

英文摘要：

Objective To observe the effect of a novel pressure controlled water jet used in transurethral resection of bladder tumor. Methods Clinical data of 12 patients who underwent a transurethral resection of bladder tumor by using a novel water jet was retrospectively analyzed. Results All 12 cases were successfully operated. Estimated blood loss during operation was less than 5 ml. Operation time was 20-45 minutes （median was 28 min）, time of water injection was 8-15 minutes （median was 12 min）. There were no significant complications. All patients were followed up for 4-10 months, and tumor recurrence or progression was not found by cystoscopic examination. Conclusion Transurethral resection of bladder tumor by using a novel pressure controlled water jet is advantageous with favorable safety and feasibility.