Patent ID: 7967838

Claim:
A filter to be placed in a flow of blood through a vessel, the filter comprising: a tubular member defining 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 having a tip segment spaced along the longitudinal axis from the hub and spaced a second radial distance from the longitudinal axis, the second radial distance being 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 segment that extends along a first angle of about 60 degrees with respect to the longitudinal axis; a second segment that extends along a second angle of about 20 degrees with respect to the longitudinal axis; and the tip segment that extends along a third angle of less than about 1 degree with respect to the longitudinal axis.