FILAMENTARY DEVICES AND TREATMENT OF VASCULAR DEFECTS
Devices and methods for treatment of a patient's vasculature with some embodiments configured for delivery with a microcatheter for treatment of the cerebral vasculature of a patient. Some embodiments may include a permeable shell configured to occlude blood flow therethrough.
1 . A device for treatment of an aneurysm within a patient's vasculature, comprising:
a self-expanding resilient permeable shell having a proximal end, a distal end, a longitudinal axis and further comprising:
a plurality of elongate resilient filaments including large and small filaments of at least two different transverse dimensions with a woven structure, a radially constrained elongated state configured for delivery within a microcatheter with the thin woven filaments extending longitudinally from the proximal end to the distal end radially adjacent each other along a length of the filaments, and an expanded relaxed state with a longitudinally shortened configuration relative to the radially constrained state, wherein the filaments are bundled and secured to each other at a proximal end.
2 . The device of claim 1 , wherein the permeable shell forms a generally spherical shape when in the expanded relaxed state.
3 . The device of claim 1 , wherein the permeable shell forms a generally ovoid shape when in the expanded relaxed state.
4 . The device of claim 1 , wherein the permeable shell forms a generally globular shape when in the expanded relaxed state.
5 . The device of claim 1 , wherein the woven structure is adapted to reside within the aneurysm.
6 . The device of claim 5 , wherein the device is adapted to span the neck of the aneurysm.
7 . The device of claim 1 , wherein, after implantation, no part of the device extends over the aneurysm neck outside of the dome.
8 . The device of claim 1 , wherein the smaller filaments have a transverse diameter of about 0.015 mm to about 0.5 mm.
9 . The device of claim 1 , wherein the larger filaments have a transverse diameter of about 0.4 mm to about 0.1 mm.
10 . The device of claim 1 , wherein the filaments are bundled and secured to each other at a distal end.
11 . A device for treatment of an aneurysm within a patients vasculature, comprising:
a self-expanding resilient permeable shell having a proximal end, a distal end, a longitudinal axis and further comprising:
a plurality of elongate resilient filaments with a woven structure, a radially constrained elongated state configured for delivery within a microcatheter with the thin woven filaments extending longitudinally from the proximal end to the distal end radially adjacent each other along a length of the filaments, and an expanded relaxed state with a longitudinally shortened configuration relative to the radially constrained state, wherein the filaments are bundled and secured to each other at a proximal end,
wherein the woven structure is adapted to reside within the aneurysm and wherein the device is adapted to span the neck of the aneurysm.
12 . The device of claim 11 , wherein the permeable shell forms a generally spherical shape when in the expanded relaxed state.
13 . The device of claim 11 , wherein the permeable shell forms a generally ovoid shape when in the expanded relaxed state.
14 . The device of claim 11 , wherein the permeable shell forms a generally globular shape when in the expanded relaxed state.
15 . The device of claim 11 , including large and small filaments of at least two different transverse dimensions.
16 . The device of claim 11 , wherein, after implantation, no part of the device extends over the aneurysm neck outside of the dome.
17 . The device of claim 11 , wherein the smaller filaments have a transverse diameter of about 0.015 mm to about 0.5 mm.
18 . The device of claim 11 , wherein the larger filaments have a transverse diameter of about 0.4 mm to about 0.1 mm.
19 . The device of claim 11 , wherein the filaments are bundled and secured to each other at a distal end.