Aneurysm occlusion device

摘要

A device to treat an aneurysm can include a plurality of soft and compressible fill members. A flow conduit can carry the fill members in a liquid flow. A flexible, expandable, and liquid-permeable net or mesh enclosure can be inserted into and to fit within the aneurysm. The net or mesh enclosure can receive and retain the plurality of fill members while openings in the net or mesh enclosure allow enough liquid flow through the net or mesh enclosure to transport the fill members into the net or mesh enclosure. A resulting accumulation of the plurality of fill members within the net or mesh enclosure causes the net or mesh enclosure to expand and to come into contact with and generally conform with an interior wall of the aneurysm. This can substantially occlude the aneurysm and retain the net or mesh enclosure within the aneurysm.

主权项

1. A device to treat an aneurysm comprising:
a plurality of individual soft and compressible non-liquid fill members; a flow conduit, providing a liquid flow that carries the individual, non-liquid fill members using the liquid flow; a flexible, expandable, and liquid-permeable net or mesh enclosure, configured to be inserted into and to fit within the aneurysm, wherein the net or mesh enclosure comprises a primary opening that is configured to receive the plurality of individual, non-liquid fill members into the net or mesh enclosure and wherein the primary opening is closable after the plurality of individual, non-liquid fill members have been received into the net or mesh enclosure; and wherein the net or mesh enclosure further comprises a plurality of secondary openings that allow the liquid flow that carried the individual, non-liquid fill members into the net or mesh enclosure to pass through the net or mesh enclosure but retain the plurality of individual, non-liquid fill members within the net or mesh enclosure, wherein a resulting accumulation of the plurality of individual, non-liquid fill members within the net or mesh enclosure causes the net or mesh enclosure to expand and to come into contact with the aneurysm walls to thereby substantially occlude the aneurysm and retain the net or mesh enclosure within the aneurysm, wherein at least some of the non-liquid fill members retained by the net or mesh enclosure partially protrude out from the net or mesh enclosure to assist in conformal gripping of the interior aneurysm wall; wherein a proximal region of the net or mesh enclosure has a first strength, flexibility, plasticity, or elasticity; wherein a distal region of the net or mesh enclosure has a second strength, flexibility, plasticity, or elasticity; wherein there is a difference between the first strength, flexibility, plasticity, or elasticity and the second strength, flexibility, plasticity, or elasticity; and a user-actuatable closure, associated with the primary opening in the net or mesh enclosure through which the individual non-liquid fill members are introduced into the enclosure, wherein the closure is configured to be user-actuated to reduce a size of the primary opening after the net or mesh enclosure has been expanded by filling it with the fill members.