PERIPHERAL SEALING VENOUS CHECK-VALVE

摘要

Among other things, there are disclosed embodiments of a valve implant that in particular examples are implantable within a blood vessel, which include a first set of elongate members, a second set of elongate members, and a hood affixed to the first set of elongate members. The first set of elongate members is resiliently deformable, and their distal ends are flared radially outward. The distal ends of the second set of elongate members are distal to the ends of the first set of elongate members. The hood is affixed to the first set of elongate members, and seals against the interior wall of the blood vessel in an expanded configuration. When blood flows from the proximal to the distal side of the valve implant, it presses on the hood, compressing the first set of elongate members, breaking the seal.

主权项

1. A valve implant for implantation in a bodily lumen, the implant having a central axis, a proximal end, and a distal end, the implant comprising:
a first set of resiliently deformable, elongate members, each having respective proximal and distal ends, the proximal ends adjacent to one another and immobile with respect to each other, and respective distal ends flared radially outward and mobile with respect to each other, the first set of elongate members defining a plurality of spaces between them; a second set of elongate members, each having respective proximal and distal ends, the proximal ends of the second set adjacent to and immobile with respect to the proximal ends of the first set of elongate members, and the distal ends of the second set flared radially outward; wherein at least one of the elongate members of the first set or at least one of the elongate members of the second set includes at least a portion pivotable toward and away from the central axis; and a substantially fluid-tight hood which, during operation of the implant, is fixed to the portion or portions of the pivotable member or members; wherein at least part of the hood is movable between a first, closed position, in which retrograde fluid flow through the lumen is blocked by the hood, and a second, open position, in which antegrade flow past the valve implant is permitted.