“…Some patients who require long-term filter implantation but do not have the necessary health conditions for a filter retrieval surgery will still use this type of filter, but this filter is currently less commonly used clinically. Representative products of this type of filter are the Mobin-Uddin umbrella filter ( Dupont, 1976 ), Greenfield filter ( Kanter and Moser, 1988 ), Bird’s Nest filter ( Roehm, 1984 ), Vena Tech LGM filter ( Crochet et al, 1993 ), Vena Tech LP filter ( Ahmed et al, 2016 ), Simon nitinol filter ( Poletti et al, 1998 ) and TrapEase filter ( Liu et al, 2005 ).…”