Filter device

The utility model provides a filter device, filter device include at least one the inside filtration that is the pipy bearing structure of net and is connected, every inside filtration and bearing structure along axial part overlapping at least with bearing structure, inside filtration includes a plurality of bracing pieces, connections that gather of the first end of all bracing pieces, and the second of all bracing pieces is held and is connected with bearing structure. Because every inside filtration overlaps along the at least part of axial with bearing structure, has shortened the length of filter device along the axis, avoid having improved the efficiency of catching the thrombus because filter structure overlength causes the influence to two side kidney veins and iliac vein time blood. Meanwhile, because bearing structure describes and adopts suitable specification for the network management, for inside filtration provides stronger holding power, avoid the top of inside filtration decentered phenomenon to appear, improved the accuracy after the filter device release to the efficiency of catching the thrombus has further been improved.