US 12,447,001 B2
Umbrella type filter with anti-transfixion protection
Alain Nigon, Bormes les Mimosas (FR)
Assigned to A. L. N., Bormes les Mimosas (FR)
Appl. No. 17/043,078
Filed by A.L.N., Ghisonaccia (FR)
PCT Filed Apr. 18, 2019, PCT No. PCT/FR2019/050934
§ 371(c)(1), (2) Date Sep. 29, 2020,
PCT Pub. No. WO2019/202274, PCT Pub. Date Oct. 24, 2019.
Claims priority of application No. 1853412 (FR), filed on Apr. 18, 2018.
Prior Publication US 2021/0015596 A1, Jan. 21, 2021
Int. Cl. A61F 2/01 (2006.01)
CPC A61F 2/0103 (2020.05) [A61F 2/0105 (2020.05); A61F 2220/0016 (2013.01); A61F 2230/0067 (2013.01); A61F 2230/0093 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A vena cava filter, comprising:
at least two anchoring branches for anchoring the filter in a wall of a blood vessel, the anchoring branches each including a fixed end and a free end, the fixed ends of the anchoring branches being fixed to each other and the free ends each terminating in a hook oriented outwards;
at least three short centering branches, each comprising a fixed end and a free end, the fixed end being fixed to the fixed ends of the anchoring branches, the fixed end and the free end forming a convex line relative to a longitudinal axis of the filter formed by an average of extension axes of the anchoring branches and the short centering branches,
wherein each of the anchoring branches comprises an anti-transfixion protection spaced proximal to their respective hook,
wherein the anti-transfixion protection comprises a loop,
wherein the loop has an equivalent diameter of between 990 pm and 1210 pm, and
wherein the vena cava filter is made entirely of stainless steel.