Removable thrombus filter

摘要

A blood clot filter (10) having a central longitudinal axis which is collapsible into a collapsed configuration toward said longitudinal axis for insertion into a blood vessel and which is radially expansible outwardly from said longitudinal axis to an expanded configuration for contact with an inner wall of said blood vessel at two longitudinally spaced locations, said blood clot filter having leading and trailing ends and comprising: a first plurality of spaced wires (18) which, in the expanded configuration of said filter curve outwardly away from said longitudinal axis toward the trailing end of said blood clot filter to form a first filter basket (14) and a second plurality of spaced wires (24) which, in the expanded configuration of said filter angle outwardly away from said longitudinal axis toward the leading end of said blood clot filter to form a second filter basket (16) opening toward said leading end.