Patent ID: 7625390
Filing Date: 2009-12-01
Classification: A61F

Abstract:
1. A removable filter for capturing thrombi in a blood vessel, the filter comprising: a plurality of primary struts having first ends attached together along a longitudinal axis, each primary strut extending arcuately along the longitudinal axis and linearly radially, each primary strut including an arcuate segment having a first absolute tensile strength, the arcuate segment including a first curved portion and a second curved portion, the first curved portion extending from the first end away from the longitudinal axis, the second curved portion extending from the first curved portion toward the longitudinal axis and terminating at an anchoring hook, the anchoring hook being integral with the arcuate segment and having the same thickness as the arcuate segment; and a plurality of secondary struts freely spaced between the primary struts and having connected ends attached together along the longitudinal axis, each secondary strut freely extending from the connected end to a free end avoiding contact with other secondary struts and primary struts, each secondary strut extending arcuately along the longitudinal axis and linearly radially, each secondary strut including a first arc and a second arc, the first arc extending from the connected end away from the longitudinal axis, the second arc extending from the first arc toward the longitudinal axis and terminating at the free end without a hook, each secondary strut having a second absolute tensile strength.