Devices for treatment of vascular defects

Patent metadata

Field	Value
Publication number	US-12023034-B2
Application number	US-202117198915-A
Country	US
Kind code	B2
Filing date	Mar 11, 2021
Priority date	Mar 11, 2020
Publication date	Jul 2, 2024
Grant date	Jul 2, 2024

Abstract

Devices and methods for treatment of a patient's vasculature are described. Embodiments may include a permeable implant connected to an expandable stent through a plurality of wires. The permeable shell is configured for placement in an aneurysm and the expandable stent is configured for placement in a parent vessel proximal, near, or adjacent the aneurysm.

First claim

What is claimed is:

1. A device for treatment of a patient's cerebral aneurysm, comprising:
a permeable shell having a proximal end, a distal end, a radially constrained elongated state configured for delivery within a catheter lumen, an expanded state with a longitudinally shortened configuration relative to the radially constrained state, and a plurality of elongate filaments that are woven together to form a mesh;
an expandable stent having a proximal end, a distal end, and a lumen therebetween, the expandable stent having a radially constrained state configured for delivery within the catheter lumen and an expanded state, wherein the expandable stent comprises a tubular mesh structure formed of a plurality of filaments; and
a plurality of wires that are connected to the proximal end of the permeable shell and the distal end of the expandable stent, wherein the plurality of wires that are connected to the proximal end of the permeable shell are a different plurality than the plurality of filaments that form the tubular mesh structure of the expandable stent,
wherein the plurality of filaments forming the permeable shell are secured together by a marker band at the distal end of the permeable shell.

2. The device of claim 1 , wherein the plurality of wires includes about 4 to about 6 wires.

3. The device of claim 1 , wherein the plurality of wires separate the distal end of the expandable stent and the proximal end of the permeable shell by about 0.5 to 10 mm.

4. The device of claim 1 , wherein the proximal end of the expandable stent is configured assume a tubular shape after the device has been detached from a pusher.

5. The device of claim 1 , wherein the expandable stent is configured to allow blood to flow from the proximal end through the lumen and out the distal end of the expandable stent.

6. The device of claim 1 , wherein the distal end of the expandable stent comprises openings that are configured to allow blood to flow therethrough.

7. The device of claim 1 , wherein the device is capable of treatment of a cerebral bifurcation aneurysm located in a parent vessel having at least one daughter vessel.

8. The device of claim 1 , wherein the permeable shell comprises first and second mesh layers.

9. The device of claim 1 , wherein the permeable shell comprises a single mesh layer.

10. The device of claim 1 , wherein the plurality of filaments forming the permeable shell are secured by a marker band at the proximal end of the permeable shell.

11. The device of claim 1 , wherein the plurality of wires that are connected to the proximal end of the permeable shell and the distal end of the expandable stent are metals or metal alloys.

12. The device of claim 1 , wherein the plurality of wires that are connected to the proximal end of the permeable shell and the distal end of the expandable stent are bioabsorbable.

13. The device of claim 1 , wherein the plurality of filaments that form the tubular mesh are metals or metal alloys.

14. The device of claim 1 , wherein the plurality of filaments that form the tubular mesh are bioabsorbable.

15. The device of claim 1 , wherein the plurality of filaments that form the tubular mesh and the plurality of wires that are connected to the proximal end of the permeable shell and the distal end of the expandable stent are bioabsorbable.

16. The device of claim 1 , wherein the plurality of filaments that form the tubular mesh and the plurality of wires that are connected to the proximal end of the permeable shell and the distal end of the expandable stent are metals or metal alloys.

Assignees

• Microvention Inc

Inventors

• Patterson William R
• Hoit Daniel
• Rangwala Hussain S
• Hewitt Todd
• Milhous Parker
• Tran Hung

Classifications

• A61B2017/12054

  Details concerning the detachment of the occluding device from the introduction device · CPC title

• A61B17/12168

  having a mesh structure (A61B17/1214 takes precedence) · CPC title

• A61B2090/3966

  Radiopaque markers visible in an X-ray image · CPC title

• A61B17/12118 Primary

  for positioning in conjunction with a stent · CPC title

• A61B17/12113

  within an aneurysm · CPC title