Patent ID: 8529595

Claim:
An intravascular filter, comprising: at least two filter legs comprising a first filter leg and a second filter leg, each filter leg having a free end and an opposite joined end, wherein each filter leg has an unconstrained configuration, a delivery configuration, and a deployed configuration; a center hub, and a filter axis extending through the hub, the joined end of each filter leg secured to the center hub, each filter leg extending from the center hub, each of the filter legs having a first portion extending generally in a first axial direction, a second portion generally extending in a second opposite axial direction, and an apex positioned between the first portion and the second portion at which an acute angle is formed between the first and second portions such that the center hub is disposed axially between the apex and the free end of each of the at least two filter legs; wherein the first portion extends between the center hub and the apex; the acute angle is defined by an angle β defined as an angle between the first portion of the filter leg and the second portion of the filter leg; an angle α defined as an angle between the first portion of the filter leg and a longitudinal axis extending through the center hub; and wherein the filter is biased to expand from a delivery configuration to an unconstrained configuration wherein angle β is greater than angle α in the unconstrained configuration.