Palestrant A M, Faykus M H
Department of Radiology, Good Samaritan Regional Medical Center, Phoenix, AZ 85006.
J Vasc Interv Radiol. 1991 Feb;2(1):117-21. doi: 10.1016/s1051-0443(91)72483-4.
A new self-centering stainless steel inferior vena cava filter (clover leaf filter) that can be delivered percutaneously through a 10-F catheter has been developed. The filter is loaded into an angiographic catheter as a set of straightened wires that are mechanically deformed into a predetermined clover leaf shape when the device is delivered. The filter can be deployed easily and effectively into the simulated vena cava. Emboli-capturing efficiency of the new filter was compared in vitro to that of the Greenfield and Bird's Nest inferior vena cava filters. All three filters captured all large 5 x 100-mm, potentially fatal emboli. The clover leaf filter captures more of the smaller (5 x 20-mm and 3 x 20-mm) emboli than the Greenfield filter and less than the Bird's Nest filter.
一种新型的可经皮通过10F导管输送的自定心不锈钢下腔静脉滤器（三叶形滤器）已研发成功。该滤器作为一组拉直的金属丝被装入血管造影导管，在输送该装置时，这些金属丝会机械变形为预定的三叶形。该滤器能够轻松且有效地部署到模拟的腔静脉中。将这种新型滤器的栓子捕获效率与格林菲尔德（Greenfield）和鸟巢式下腔静脉滤器在体外进行了比较。所有这三种滤器都能捕获所有5×100毫米的大型潜在致命栓子。三叶形滤器捕获的较小（5×20毫米和3×20毫米）栓子比格林菲尔德滤器多，比鸟巢式滤器少。
