MULTILAYER DEVICES FOR INHIBITING DISTAL MIGRATION OF FLOW DIVERTING STENTS
An aspiration system includes a pump and a control system in communication with the pump. The control system includes a microcontroller, an antenna configured to receive a signal, and a pump control board in communication with the microcontroller. The antenna is in communication with the microcontroller. Upon receiving the signal, the pump control board operates the pump to create negative pressure according to the signal.
1 . A device for diverting flow of blood from an aneurysm and permitting perfusion to branch vessels while inhibiting distal migration, the device comprising:
a first textile structure expandable from a collapsed configuration to an expanded configuration, the first textile structure comprising a first braid angle, the first braid angle being between 145° and 175°;
a second textile structure expandable from a collapsed configuration to an expanded configuration, the second textile structure radially inward of the first textile structure, the second textile structure comprising a second braid angle less than the first braid angle, the second braid angle being between 50° and 120°, the second braid angle being between 45% and 75% less than the first braid angle;
a first longitudinal segment consisting of the second textile structure, the first longitudinal segment having a first porosity, the first porosity configured to permit perfusion to branch vessels;
a second longitudinal segment comprising the first textile structure and the second textile structure, the second longitudinal segment comprising a bulb configured to inhibit the device from distally migrating when the device is implanted in vasculature, the second longitudinal segment having a second porosity less than the first porosity, the second porosity configured to divert flow of blood from an aneurysm; and
a third longitudinal segment consisting of the second textile structure, the second longitudinal segment longitudinally between the first longitudinal segment and the second longitudinal segment, the third longitudinal segment having a third porosity less than the first porosity, the third porosity configured to permit perfusion to branch vessels.
2 . The device of claim 1 , wherein the bulb is configured to inhibit longitudinal migration of the first textile structure relative to the second textile structure.
3 . The device of claim 1 , wherein the first longitudinal segment comprises a second bulb, and wherein the third longitudinal segment comprises a third bulb.
4 . A device for diverting flow of blood from an aneurysm and permitting perfusion to branch vessels while inhibiting distal migration, the device comprising:
a first textile structure expandable from a collapsed configuration to an expanded configuration;
a second textile structure expandable from a collapsed configuration to an expanded configuration, the second textile structure longitudinally overlapping the first textile structure;
a first longitudinal segment comprising the second textile structure, the first longitudinal segment having a first porosity, the first porosity configured to permit perfusion to branch vessels;
a second longitudinal segment comprising the first textile structure and the second textile structure, the second longitudinal segment comprising a bulb configured to inhibit the device from distally migrating when the device is implanted in vasculature, the second longitudinal segment having a second porosity less than the first porosity, the second porosity configured to divert flow of blood from an aneurysm; and
a third longitudinal segment comprising the second textile structure, the second longitudinal segment longitudinally between the first longitudinal segment and the second longitudinal segment, the third longitudinal segment having a third porosity less than the first porosity, the third porosity configured to permit perfusion to branch vessels.
5 . The device of claim 4 , wherein the first textile structure comprises a first braid angle and the second textile structure comprises a second braid angle different than the first braid angle.
6 . The device of claim 5 , wherein the first braid angle is between 145° and 175°, and wherein the second braid angle is between 50° and 120°.
7 . The device of claim 5 , wherein the second braid angle is between 40° and 100° less than the first braid angle.
8 . The device of claim 5 , wherein the second braid angle is between 45% and 75% less than the first braid angle.
9 . The device of claim 4 , wherein the bulb is configured to inhibit longitudinal migration of the first textile structure relative to the second textile structure.
10 . The device of claim 4 , wherein the first longitudinal segment comprises a second bulb, and wherein the third longitudinal segment comprises a third bulb.
11 . The device of claim 4 , wherein the second textile structure is radially inward of the first textile structure, wherein the first textile structure comprises a first braid angle and the second textile structure comprises a second braid angle less than the first braid angle, wherein the second braid angle is between 40° and 100° less than the first braid angle, wherein the first longitudinal segment comprises a second bulb, and wherein the third longitudinal segment comprises a third bulb.
12 . A device for diverting flow of blood from an aneurysm and permitting perfusion to branch vessels while inhibiting distal migration, the device comprising:
a first textile structure expandable from a collapsed configuration to an expanded configuration;
a second textile structure expandable from a collapsed configuration to an expanded configuration, the second textile structure longitudinally overlapping the first textile structure; and
a first bulb comprising a first portion of the first textile structure and a first portion of the second textile structure, the first bulb configured to inhibit the device from distally migrating when the device is implanted in vasculature.
13 . The device of claim 12 , wherein the first textile structure comprises a first braid angle and the second textile structure comprises a second braid angle different than the first braid angle.
14 . The device of claim 12 , wherein the first braid angle is between 145° and 175°.
15 . The device of claim 12 , wherein the second braid angle is between 50° and 120°.
16 . The device of claim 12 , wherein the second braid angle is between 40° and 100° less than the first braid angle.
17 . The device of claim 12 , wherein the second braid angle is between 45% and 75% less than the first braid angle.
18 . The device of claim 12 , wherein the first bulb is configured to inhibit longitudinal migration of the first textile structure relative to the second textile structure.
19 . The device of claim 12 , further comprising:
a second bulb comprising a third portion of the second textile structure, the second bulb proximal to the first bulb; and
a third bulb comprising a third portion of the second textile structure, the third bulb distal to the first bulb.
20 . The device of claim 12 , wherein the second textile structure is radially inward of the first textile structure, wherein the first textile structure comprises a first braid angle and the second textile structure comprises a second braid angle different than the first braid angle, the device further comprising:
a second bulb comprising a third portion of the second textile structure, the second bulb proximal to the first bulb; and
a third bulb comprising a third portion of the second textile structure, the third bulb distal to the first bulb.