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US 12,447,001 B2Granted
Umbrella type filter with anti-transfixion protection
AssigneeA. L. N.
InventorAlain Nigon
Life of this patent
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Abstract
The present invention concerns a filter (1) for a blood vessel, and in particular a vena cava filter, comprising at least two anchoring branches (11) for anchoring the filter in the wall of the blood vessel, the anchoring branches having a fixed end (111) and a free end (112), the fixed ends of the anchoring branches being fixed to one another and the free ends being terminated with a hook (113) oriented toward the outside, characterised in that each of the anchoring branches comprises an anti-transfixion protection (114).
Claims17
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.
3 more elements
Dependencies are inferred from the claim text.