Patent ID: 8574261

Claim:
A filter to be placed in a flow of blood through a vessel, the filter comprising: a hub disposed along a longitudinal axis; at least one anchor member projecting from the hub, the at least one anchor member including a hook that penetrates a blood vessel wall when the filter is placed in a blood vessel, the hook spaced along the longitudinal axis from the hub and spaced a first radial distance from the longitudinal axis; and at least one locator member projecting from the hub, the at least one locator member including a tip segment spaced along the longitudinal axis from the hub and spaced a second radial distance from the longitudinal axis, wherein the second radial distance is less than the first radial distance, the at least one locator member having at least four segments including the tip segment, each disposed on respective distinct axes, the four segments comprising: a proximal segment proximate the hub; a first linear segment that extends from the proximal segment along a first angle with respect to the longitudinal axis; a second linear segment that extends from the first segment along a second angle with respect to the longitudinal axis, wherein the second angle is less than the first angle; and the tip segment that extends from the second segment along a third angle with respect to the longitudinal axis, wherein the third angle is less than the second angle.