Occlusive devices

Patent metadata

Field	Value
Publication number	US-10314593-B2
Application number	US-201514862479-A
Country	US
Kind code	B2
Filing date	Sep 23, 2015
Priority date	Sep 23, 2015
Publication date	Jun 11, 2019
Grant date	Jun 11, 2019

Abstract

An implant can include a single- or dual-layer braided body having a variable porosity. In a dual-layer body, first and second longitudinal sections, having respective first and second porosities, can be overlapped such that the first and second porosities overlap each other. The dual-layer construction can cumulatively provide a third porosity at a distal portion and a fourth porosity at a proximal portion. The third and fourth porosities can each be greater than each of the first and second porosities.

First claim

What is claimed is:

1. An implant for occluding an aneurysm, comprising:
a dual-layer braided body having distal and proximal portions, and the braided body formed of a tubular member having first and second longitudinal sections, wherein the first longitudinal section is everted over the second longitudinal section to form the dual-layer braided body, the first and second longitudinal sections having respective first and second porosities, wherein the first and second porosities are different, the distal portion of the dual-layered braided body comprising a closed-end and having a fold whereby the first and second longitudinal sections are coupled at and extend from the fold, the first and second longitudinal sections overlapping each other to cumulatively provide a third porosity at the distal portion and a fourth porosity at the proximal portion, the third and fourth porosities being less than the first and second porosities.

2. The implant of claim 1 , wherein the fourth porosity is less than the third porosity.

3. The implant of claim 1 , wherein the third porosity is less than the fourth porosity.

4. The implant of claim 1 , wherein the fourth porosity is constant from the proximal portion across a midsection of the body.

5. The implant of claim 1 , wherein the second porosity is less than the first porosity.

6. The implant of claim 1 , wherein the first porosity is substantially constant along the first longitudinal section.

7. The implant of claim 1 , wherein the first porosity increases along the length of the first longitudinal section from the distal portion to the proximal portion of the dual-layered braided body.

8. The implant of claim 1 , wherein the second porosity is substantially constant along the second longitudinal section.

9. The implant of claim 1 , wherein the second porosity decreases along the length of the first longitudinal section from the distal portion to the proximal portion of the dual-layered braided body.

10. The implant of claim 1 , wherein the proximal portion is substantially flat.

Assignees

• Covidien Lp

Inventors

• Bardsley Earl
• Rhee Richard

Classifications

• A61B17/12186

  liquid materials adapted to be injected · CPC title

• A61B17/12177

  comprising additional materials, e.g. thrombogenic, having filaments, having fibers or being coated · CPC title

• A61B17/12031

  complete occlusion · CPC title

• A61B17/12172

  having a pre-set deployed three-dimensional shape (methods of manufacturing A61B2017/00526) · CPC title

• A61B2017/00526

  Methods of manufacturing · CPC title