Patent ID: 9107733
Filing Date: 2015-08-18
Classification: A61B,A61F

Abstract:
1. A blood filter adapted for deployment in a blood vessel having a wall, comprising a non-everting filter frame having a longitudinal axis and having at least a first outer zone, a second intermediate zone and a third inner zone, the first, second and third zones in annular relationship with each other and disposed about the longitudinal axis, the first, outer zone adjacent to the wall of the blood vessel, the second, intermediate zone adapted for collection of blood clots, and the third, inner zone allowing for continuing blood flow through the filter substantially uninterrupted by blood clots collected in the intermediate zone, wherein said filter frame further comprises a filter center located on the longitudinal axis at a proximal end of the filter and multiple filter struts extending radially outward from the filter center in a distal direction of a length sufficient to allow distal ends of said filter struts to contact the wall of said blood vessel, said filter struts being spaced circumferentially apart from each other, and also having multiple clot deflector struts that also extend radially outward from the filter center in a distal direction for a distance insufficient to allow them to contact the wall of said blood vessel, said clot deflector struts being spaced circumferentially apart from each other and located circumferentially between pairs of adjacent filter struts, wherein distal ends of said clot deflector struts return to a distal center located on said longitudinal axis a distance distally from said filter center.