Expandable sealing skirt technology for leak-proof endovascular prostheses
AssigneeEndoluminal Sciences Pty Ltd.
InventorAshish Mitra
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Abstract
Disclosed herein are device assemblies for endovascular prosthesis implantation in a human patient comprising a collapsed delivery configuration and an expanded deployed configuration comprising: a stent frame comprising a plurality of expandable stent cells arranged in more than one layer and stacked in a longitudinal direction; a valve attached to the stent frame; and an expandable sealing skirt coupled to the stent frame, the expandable sealing skirt comprising a protruding region configured to expand radially past the stent frame when the device assembly is in the expanded deployed configuration and a non-protruding region.
Claims38
A device assembly for endovascular prosthesis implantation in a human patient, the device assembly comprising a collapsed delivery configuration and an expanded deployed configuration, and the device assembly comprising, when in the expanded deployed configuration:
- a) a stent frame comprising
- a first layer of first expandable stent cells and a second layer of second expandable stent cells;
- b) a valve attached to the stent frame;
- and
- c) an expandable sealing skirt coupled to the stent frame, the expandable sealing skirt comprising a protruding layer and a non-protruding layer integral with and backing the protruding layer in the radial direction, the protruding layer comprising an expandable material having an inner surface integral with and extending radially outward from an outer surface of the non-protruding layer, wherein the expandable material has a thickness in the radial direction, from the inner surface thereof to an outer surface thereof, greater than that of the non-protruding layer.
The device assembly of 3, wherein the protruding layer forms a protruding ring.
Dependencies are inferred from the claim text.