Greenfield L J, Crute S L
Surgery. 1980 Nov;88(5):719-22.
A retrieval device has been developed that allows removal of misplaced Greenfield vena caval filters. The technique was evaluated in 15 dogs in which filters were placed in the vena cava, iliac vein, or right atrium. Retrieval was possible in seven of nine dogs up to 7 days after insertion. After 7 days, retrieval was not possible because of fixation of the device. Retrieval was not possible in dogs with a jugular vein too small to accept the retrieval unit. The case of one patient in whom the filter was dislodged at the tricuspid valve is reported herein. This experience confirms that retrieval can be accomplished without significant risk.
已研发出一种可取出误置的格林菲尔德腔静脉滤器的装置。该技术在15只狗身上进行了评估，这些狗的滤器被放置在腔静脉、髂静脉或右心房。在植入后7天内，9只狗中有7只可以取出滤器。7天后，由于装置固定，无法取出。颈静脉过小无法容纳取出装置的狗也无法取出滤器。本文报告了一例滤器在三尖瓣处移位的患者病例。这一经验证实，取出滤器可在无重大风险的情况下完成。
