US 12,408,923 B2
Occlusive devices with thrombogenic inserts
Mehdi Rashidi, Irvine, CA (US)
Assigned to COVIDIEN LP, Mansfield, MA (US)
Filed by Covidien LP, Mansfield, MA (US)
Filed on Mar. 2, 2022, as Appl. No. 17/653,277.
Prior Publication US 2023/0277184 A1, Sep. 7, 2023
Int. Cl. A61B 17/12 (2006.01)
CPC A61B 17/12113 (2013.01) [A61B 17/12177 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An occlusive device for treating an aneurysm, the occlusive device comprising:
an expandable mesh configured to span a neck of the aneurysm, the expandable mesh comprising an upper wall and a lower wall, wherein an internal cavity is defined between the upper wall and the lower wall, and wherein the expandable mesh comprises an anti-thrombogenic coating localized to a portion of the lower wall of the expandable mesh; and
an insert positioned within the internal cavity of the expandable mesh between the upper wall and the lower wall, the insert comprising a film having an inner surface and an outer surface, wherein the inner surface of the film faces the upper wall of the expandable mesh, and the outer surface of the film faces the lower wall of the expandable mesh and wherein the insert comprises an open upper end defining an aperture,
wherein the insert is configured to promote thrombosis within the aneurysm and the anti-thrombogenic coating is configured to discourage thrombosis across the neck of the aneurysm when the occlusive device is deployed within the aneurysm, and
wherein when the occlusive device is deployed within the aneurysm, the expandable mesh forms a bowl structure comprising a distal portion, a proximal portion, and the internal cavity extending from the distal portion toward the proximal portion.