【摘要】 制作一种用于肛管直肠、阴道、尿道手术的环形牵开器。经临床使用证明暴露术野效果良好,省时省力,安全可靠,值得推广应用。更多还原

【Abstract】 This paper reports a new circular retractor for anal, rectal, vaginal and urethral surgeries. The clinical applications show that the retractor can provide and expose a better visual field for operations, saving time and labour, with safety and reliability. So it is a practical medical device worth being popularized.更多还原