Systems and methods of using a braided implant

• US 10,463,510 B1
• Filed: 10/05/2018
• Issued: 11/05/2019
• Est. Priority Date: 08/06/2018
• Status: Active Grant

• Current Assignee: Depuy Synthes Products Incorporated (Johnson & Johnson)
• Original Assignee: Depuy Synthes Products Incorporated (Johnson & Johnson)
• Inventors: Slazas, Robert, Peters, Geoff
• Primary Examiner(s): Prebilic, Paul B
• Application Number:
  US16/153,517
• Time in Patent Office: 396 Days
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/844 folded prior to deployment
• CPC Class Codes: A61F 2/88 the wire-like elements formed as helical or spiral coils forming a net-like or mesh-like structure A61F2/90
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/92 Stents in the form of a rolled-up sheet expanding after insertion into the vessel , e.g. with a spiral shape in cross-section
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/9522 Means for mounting a stent or stent-graft onto or into a placement instrument
• CPC Class Codes: A61F 2002/068 Modifying the blood flow model, e.g. by diffuser or deflector
• CPC Class Codes: A61F 2002/823 Stents, different from stent-grafts, adapted to cover an aneurysm
• CPC Class Codes: A61F 2002/9534 for repositioning of stents
• CPC Class Codes: A61F 2230/0067 conical
• CPC Class Codes: A61F 2250/0098 radio-opaque, e.g. radio-opaque markers
• CPC Class Codes: A61L 31/146 Porous materials, e.g. foams or sponges
• CPC Class Codes: D04C 1/06 Braid or lace serving particular purposes
• CPC Class Codes: D10B 2401/10 porous
• CPC Class Codes: D10B 2509/06 Vascular grafts; stents

Abstract

A braided implant configured as a flow diverter for treating an aneurysm. The implant can include a braided mesh configured to maintain a substantially consistent target porosity over up to a 1 mm vessel diameter range over a predetermined length in a tapered vessel.

Claims

1. A braided implant configured as a flow diverter for treating an aneurysm, the implant comprising:

a braided mesh configured to maintain a consistent target porosity of 65%-70% in a tapered vessel, the tapered vessel having up to a 1 mm diameter range;

wherein the braided mesh is configured to maintain the consistent target porosity between proximal and distal ends of the braided mesh while in the tapered vessel.

2. The implant of claim 1, wherein the tapered vessel comprises a proximal end diameter and a distal end diameter that differ by up to 1 mm, wherein the up to 1 mm vessel diameter range is defined by comparing the proximal and distal end diameters.

3. The implant of claim 1, wherein a predetermined length between proximal and distal ends of the braided mesh in the tapered vessel is at least 3 cm.

4. The implant of claim 1, wherein a predetermined length between proximal and distal ends of the braided mesh in the tapered vessel is at least 1 cm.

5. The implant of claim 1, wherein the braided implant further comprises an indicated vessel diameter, and wherein the braided implant is configured such that the indicated vessel diameter coincides with a peak of a porosity curve of the braided implant.

6. The implant of claim 5, wherein the braided implant further comprises a porosity plateau that corresponds to the 1 mm radial range in vessel diameter that is disposed about the peak of the porosity curve.

7. The implant of claim 1, wherein a pore density of the braided implant is 18 to 23 pores/mm².

8. The implant of claim 1, wherein the braided implant is a cylindrical porous structure.

9. The implant of claim 1, wherein the braided implant is formed from a plurality of single strands composed of at least a first material and one or more radiopaque multi-strands.

10. The implant of claim 1, wherein the braided implant is formed from a plurality of multi-strands formed of monofilaments each laid together with monofilaments, respectively.

11. The implant of claim 1, wherein the implant is configured to treat a vessel diameter range of 2 to 3 mm.

12. The implant of claim 1, wherein the implant is configured to treat a vessel diameter range of 2.5 to 3.5 mm.

13. The implant of claim 12, wherein a pore density of the implant is 23 pores/mm².

14. The implant of claim 1, wherein the implant is configured to treat a vessel diameter range of 3.0 to 4.0 mm.

15. The implant of claim 14, wherein a pore density of the braided implant is 18 pores/mm².

16. The implant of claim 1, wherein the implant is configured to treat a vessel diameter range of 3.5 to 4.5 mm.

17. The implant of claim 16, wherein a pore density of the braided implant is 19 pores/mm².

18. The implant of claim 1, wherein the implant is configured to treat a vessel diameter range of 4.0 to 5.0 mm.

19. The implant of claim 18, wherein a pore density of the braided implant is 23 pores/mm².

20. A braided implant configured as a flow diverter for treating an aneurysm of an internal carotid artery, the implant comprising:

a braided mesh configured to maintain a consistent target porosity of 65%-70% in the internal carotid artery which is tapered between having up to a 1 mm diameter range;

wherein the braided mesh is configured to maintain the consistent target porosity between proximal and distal ends of the braided mesh while in the internal carotid artery across the 1 mm diameter range.