Patent ID: 8628556

Claim:
A method of treating a patient, comprising: providing an implantable vessel filter including a plurality of legs wherein the plurality of legs comprises a first set of legs coupled proximally to a hub and having a first length, and a second set of legs coupled proximally to the hub and having a second length longer than the first length, each of the second set of legs having a hook at a distal end, and a center-post comprising grooved proximal and distal sections, at least some of the legs having a hook at a distal end, the center-post having a grooved distal section, the plurality of legs extending radially outward from the center-post in a filter expanded configuration; compressing the legs toward the center-post and positioning each of the hooks in a corresponding groove in the grooved distal section in a filter compressed configuration, wherein compressing the legs toward the center post includes placing the first set of legs in a corresponding groove in the grooved proximal section; inserting the filter in the filter compressed configuration into a delivery assembly and navigating the filter to a desired location in a body of the patient; and deploying the filter at the desired location, the filter transitioning from the filter compressed configuration to the filter expanded configuration.