Patent ID: 8062328
Filing Date: 2011-11-22
Classification: A61F

Abstract:
1. A filter comprising, a first tube having a plurality of a first set of expandable legs, each leg of the first set having an end secured to the first tube and a free end, a second tube having a plurality of a second set of expandable legs and a plurality of a third set of expandable legs, each leg of the second set having an end secured to the second tube and a free end, each leg of the third set comprising an expandable segment and having an end secured to a third tube, the second tube's external diameter and the third tube's external diameter being less than the first tube's internal diameter, wherein the second and third tubes are inserted into the first tube, the first tube having a plurality of slots, each slot being positioned at a radial position on the first tube allowing for deployment of the expandable segment in each leg of the third set and for deployment of each expandable leg of the second set, the slots being oriented parallel to the cylindrical axis of the first tube, wherein the free end of each leg in the first set is oriented in a direction opposite to the free end of each leg in the second set.