Patent ID: 9510929
Filing Date: 2016-12-06
CPC Classification: A61B,A61F

Claim Text:
1. A vessel filter comprising a single filtering region, a second mounting region and a third region, the filter having a body having a longitudinal axis and a first plurality of elongated cutouts extending longitudinally and a second plurality of cutouts extending longitudinally, the second plurality of cutouts axially spaced from the first plurality of cutouts and being in the third region, the filter movable from a collapsed position having a first transverse dimension to an expanded position having a second transverse dimension larger than the first transverse dimension, in the expanded position the mounting region having a larger transverse dimension than the filtering region, the filter including a first plurality of elongated struts which in the expanded position of the filter are spaced apart and extend at an angle from the longitudinal axis and converge at the filtering region in to a first tubular portion, and a second plurality of struts, the filter further including a second tubular portion axially spaced from the first tubular portion and positioned at a cranial end of the filter, the first plurality of elongated struts being integral with the first tubular portion and the second plurality of struts being integral with the first and second tubular portions, the first plurality of struts are flush with the first and second tubular portions in the collapsed position of the filter such that a transverse dimension of a region of the filter encompassing the first plurality of struts is the same as a transverse dimension of the first and second tubular portions, the first and second tubular portions joined by the second plurality of struts such that the second plurality of struts separates the first and second tubular portions and the first tubular portion is interposed and thereby forms a connecting portion between cranial ends of the first plurality of struts and caudal ends of the second plurality of struts, the second plurality of struts forming spacers having spaced apart closed loops of the same configuration to space the second tubular portion from a vessel wall, the loops extending generally in radial and axial directions and being radially spaced such that the loops are non-overlapping in an axial direction, the loops being wing shaped such that a first region extends outwardly and radially from the second tubular portion toward the mounting region to an apex and then bows inwardly to extend toward the cranial end and then extends toward a caudal end of the filter, the inwardly bowed region forming a concave region between the apex and the first tubular portion, the concave region facing toward the caudal end of the filter.