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为闸明输精管可复性注射栓堵术的阻塞机制，对２９例受术者采用不同的栓堵剂量，术后切下栓堵段输精管进行观察；２例（２侧）输精管，直视下注入栓堵剂，手术显微镜下观察破裂部位；１２例术后１～２年受术者取栓观察。结果：栓堵剂量在０．０８～０２０ｍｌ范围内，输精管全部破裂，破裂部位是在阻断器钳夹处。表明栓堵剂并不是在输精管腔内膨胀形成栓子阻断精子通路，而是通过一种“软环阻塞机制”阻断输精管。提出被栓子包绕输精管的坏死、液化是术后再通的原因之一，也是在栓子周围形成精液囊肿的主要原因。
In order to clarify the obstruction of the vas deferens refastenable injection plugging technique, 29 patients were treated with different plugging dose, after surgery, the vas deferens of the plug block were observed. In 2 patients (2 sides), the vas deferens were examined under direct vision Injection plugging agent, under the operating microscope rupture sites; 12 patients 1 to 2 years after surgery by thrombectomy. Results: The dose of blocking plug was in the range of 0.08 ~ 020ml, vas deferens were all ruptured, and the rupture site was at the site of the blocker. Show that the plugging agent does not expand in the vas deferens to form emboli blocking the sperm pathway, but through a “soft-ring blocking mechanism” to block the vas deferens. Proposed by the embolization of the necrosis of the vas deferens, liquefaction is one of the reasons after the recanalization, but also the main reason for the formation of seminal vesicles around the emboli.