Patent ID: 7722635
Filing Date: 2010-05-25
Classification: A61F

Abstract:
1. A blood clot filter having an axis and a deployed state comprising: a hub; a plurality of filter struts extending in an upstream direction from said hub, said filter struts having radially outward upstream ends in the deployed state; a plurality of alignment struts, each having a downstream end and an upstream end; each of said downstream ends of said alignment struts forming a downstream junction with a downstream end of an adjacent alignment strut; said downstream junctions being radially displaced from said hub when the filter is in the deployed state, each of said upstream ends of said alignment struts forming an upstream junction with an upstream end of an adjacent alignment strut, each of said upstream junctions forming a junction with one of said filter struts, wherein each of said upstream junctions is located at an intermediate zone of said filter struts and is located radially inwardly relative to each of said downstream junctions and said upstream ends of said filter struts to prevent said alignment struts from lying against a vessel wall in the deployed state; said filter struts and said alignment struts at least partially overlapping in an axial direction.