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残余精子是指输精管结扎后精子残存在其结扎远端的输精管,尤其是输精管壶腹部及精囊。它是除手术失败与再通外引起结扎后再孕的重要原因之一。输精管结扎是目前男性节育中广泛使用的节育措施,因此对输精管结扎术后残余精子的情况及对其有影响的因素,引起了许多学者的关注。
Residual sperm is the vas deferens remaining in the ligation of the sperm after the vas deferens ligation, especially the ampulla and seminal vesicles of the vas deferens. It is one of the important reasons for the pregnancy after ligation except the failure of surgery and recanalization. Vasectomy is currently the most widely used birth control measure in male birth control. Therefore, the situation of residual sperm after vasectomy and its influencing factors have aroused the concern of many scholars.