Globular Mesh Compressed into Multilayer Bowl-Shaped Aneurysm Neck Bridge
This invention is an intrasaccular aneurysm occlusion device. A proximal portion of the device has a single layer in a first configuration and multiple layers in a second configuration. The device can have a single-layer globular shape in the first configuration and a double-layer bowl shape in the second configuration. The device can be collapsed, compressed, inverted, and/or folded from the first configuration to the second configuration by the accumulation of embolic material in the aneurysm sac, wherein the embolic material is inserted through an opening in the device.
1 . A resilient wider-than-neck part of an aneurysm occlusion device comprising:
a mesh, net, lattice, or braid whose proximal part comprises a single layer in a first configuration and two or more overlapping layers in a second configuration.
2 . The device in claim 1 wherein the resilient wider-than-neck part has a generally spherical shape which is collapsed into a generally hemispherical and/or bowl shape in an aneurysm sac in order to create a double-layer barrier across an aneurysm neck.
3 . The device in claim 1 wherein there is an opening in the resilient wider-than-neck part.
4 . The device in claim 3 wherein liquid embolic material is inserted through the opening into the aneurysm sac.
5 . The device in claim 4 wherein a closure mechanism closes the opening after the liquid embolic material has been inserted into the aneurysm sac.
6 . The device in claim 5 wherein the closure mechanism is selected from the group consisting of: tensile ring; drawstring; electromagnetic melting mechanism; insertable plug; clamp; hydrogel plug; and bioactive congealing plug.
7 . The device in claim 1 , wherein the device further comprises multiple delivery lumens or catheters.
8 . The device in claim 7 , wherein the device comprises a first delivery lumen or catheter which delivers the resilient wider-than-neck part of the device and a second delivery lumen or catheter which delivers the embolic material.
9 . A resilient wider-than-neck portion of an aneurysm occlusion device comprising:
a mesh, net, or lattice which is inserted into an aneurysm sac;
wherein the mesh, net, or lattice has a first configuration in which a proximal portion of the mesh, net, or lattice has a single layer; and
wherein the mesh, net, or lattice has a second configuration in which the proximal portion of the mesh, net, or lattice has two or more layers.
10 . The device in claim 9 wherein the resilient wider-than-neck portion is collapsed, compressed, and/or folded from the first configuration to the second configuration.
11 . The device in claim 9 wherein the resilient wider-than-neck portion has a generally spherical or ellipsoidal shape in the first configuration.
12 . The device in claim 9 wherein the resilient wider-than-neck portion has a bowl or cup shape in the second configuration.
13 . The device in claim 9 wherein there is an opening in the resilient wider-than-neck portion.
14 . The device in claim 13 wherein liquid embolic material is inserted through the opening into the aneurysm sac.
15 . The device in claim 14 wherein a closure mechanism closes the opening after the liquid embolic material has been inserted into the aneurysm sac.
16 . The device in claim 15 wherein the closure mechanism is selected from the group consisting of: tensile ring; drawstring; electromagnetic melting mechanism; insertable plug; clamp; hydrogel plug; and bioactive congealing plug.
17 . The device in claim 9 , wherein the device further comprises multiple delivery lumens or catheters.
18 . The device in claim 17 , wherein the device comprises a first delivery lumen or catheter which delivers the resilient wider-than-neck portion of the device and a second delivery lumen or catheter which delivers the embolic material.
19 . An aneurysm occlusion device comprising:
a mesh, net, or lattice which is inserted into an aneurysm sac; wherein the mesh, net, or lattice is made with braided or woven filaments, wires, tubes, or strands;
wherein first ends of the filaments, wires, tubes, or strands converge at a proximal hub in the first configuration;
wherein second ends of the filaments, wires, tubes, or strands converge at a distal hub in the first configuration; and
wherein the distal hub is closer to the proximal hub in the second configuration than in the first configuration.
20 . The device in claim 19 wherein the distal hub does not contact the proximal hub in the first configuration, but the distal hub does contact the proximal hub in the second configuration.