is not sufficiently exposed the delivery system is inserted into the femoral vein u201c f u201d and advanced through the iliac arteries into the inferior vena cava u201c v u201d extension 107 of hub 102 receives tubing 350 to enable saline injection the pusher 110 is advanced so filter 900 is advanced from cartridge 10 by pusher tube 114 and through tubing 106 of sheath 101 to a position adjacent tube opening 108 the introducer sheath is then withdrawn so the filter exits through opening 108 exposing the filter 900 to enable it to be warmed by body temperature to transition to the expanded placement configuration note it is implanted in the orientation such that filter section 919 is downstream of the flared anchoring section 921 as shown in fig8 b this enables blood clots or other particles to be directed to the center of the filter section by the angled struts thus correct orientation of filter placement can be appreciated fig1 illustrates insertion of filter 900 by way of example through the internal jugular vein into the inferior vena cava u201c v u201d once a jugular approach is determined knob 16 is slid along axial slot 20 in the direction of the jugular arrow to expose the snap fit feature of the engagement member 34 see e g fig9 and 10 knob 16 is then rotated into the second radial component 26 to retain the snap feature of engagement member 34 in the extended exposed position the snap feature is then connected to the hub 102 of the introducer sheath component of the delivery system and the pusher tube 114 of pusher 110 advances the filter through tube 106 of sheath 101 as described above to a position adjacent opening 108 withdrawal of sheath 101 exposes the filter to.