A vascular filter (10) comprises an emboli-capturing portion having a set of helical filter-wires (30) joined at a central region and extending in a given direction along the blood vessels (42) in a diverging relationship to the axis constructed to engage the walls of said vessel. A major mid-portion of the length of the free ended wires are of generally helical form, cooperatively related to form an effective emboli capturing array (26). Anchoring is accomplished by a separate assembly formed of struts (40) and anchoring devices (38). A parallelogram supporting strut assembly and other means for providing linear engagement with the wall of the vena cava are shown. The parallelogram structure is shown to have filter capability by itself as well.
申请公布号
WO9509567(A1)
申请公布日期
1995.04.13
申请号
WO1994US11208
申请日期
1994.10.03
申请人
BOSTON SCIENTIFIC CORPORATION
发明人
KIM, HANNAH, S.;SANDOCK, DAVID, L.;NOTT, SEPIDEH, H.