Implantable stroke prevention device
OwnerOfer Yodfat, Ygael Grad +3inventors
InventorsOfer Yodfat, Ygael Grad, Yuval Yassour, Moshe Rosenfeld, Daniel Levin
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Abstract
An implantable device for positioning about a blood vessel bifurcation zone to control flow of embolic material around said bifurcation. The device comprises an anchoring element extending within said zone of bifurcation to anchor said device therein, and a deflecting element, associated with said anchoring element, said deflecting element comprising a mesh having a mesh size sufficient to allow passage of blood without hindrance whilst occluding passage of embolic material exceeding a predetermined size.
Claims20
An implantable device for preventing the flow of embolic material flowing about a blood vessel bifurcation zone having a first branch vessel and a second branch vessel from entering the second branch vessel, the implantable device comprising:
- a deflecting portion comprising a mesh having a mesh size sufficient to allow passage of blood to an inlet of the second branch vessel substantially without hindrance whilst occluding passage to said inlet of said second branch vessel of embolic material exceeding a predetermined size;
- and
- an anchoring portion, associated with said deflecting element, said anchoring portion bearing against a vessel well directly opposing said inlet of said second branch vessel to anchor said device therein.
13 A method for preventing the flow of embolic material flowing about a blood vessel bifurcation zone having a source blood vessel, a first branch vessel, and a second branch vessel from entering the second branch vessel comprising:
- bearing a tubular anchoring member against a vessel wall in the bifurcation zone opposing the inlet to the second branch vessel thereby anchoring said tubular anchoring member within said bifurcation zone, and anchoring a deflecting element across the inlet of a second branch vessel, said deflecting element being configured and dimensioned to deflect embolic material exceeding a predetermined size;
- and
- deflecting the flow of embolic material exceeding said predetermined size to said first branch vessel whilst allow passage of blood to said second branch vessel substantially without hindrance.
A method according to claim 13 wherein said anchoring is accomplished with a stent.
A method according to claim 13, wherein said deflecting element is an annular section of said tubular anchoring member extending for the complete circumference of said tubular body.
A method according to claim 13, wherein said deflecting element comprises an array of wires extending at or adjacent to the inlet into said second branch vessel.
A method according to claim 13 wherein said predetermined size is in the range of 200 μm-400 μm.
A method according to claim 13 wherein said deflecting element is sized to span said inlet of said second branch vessel.
A method according to claim 13 wherein said source vessel is the common carotid artery (CCA), said first branch vessel is the external carotid artery (ECA) and said second branch vessel is the internal carotid artery (ICA).
Dependencies are inferred from the claim text.