Vaso-occlusive devices

• US 10,159,490 B2
• Filed: 05/06/2016
• Issued: 12/25/2018
• Est. Priority Date: 05/08/2015
• Status: Active Grant

• Current Assignee: Stryker European Operations Holdings, LLC (Stryker Corporation)
• Original Assignee: Stryker European Holdings I, LLC (Stryker Corporation)
• Inventors: Wallace, Michael P., Greenhalgh, E. Skott
• Primary Examiner(s): Nguyen, Tuan V
• Application Number:
  US15/148,872
• Publication Number:
  US 20160324668A1
• Time in Patent Office: 963 Days
• CPC Class Codes: A61B 17/12031 complete occlusion
• CPC Class Codes: A61B 17/12109 in a blood vessel
• CPC Class Codes: A61B 17/12113 within an aneurysm
• CPC Class Codes: A61B 17/1214 Coils or wires
• CPC Class Codes: A61B 17/1215 comprising additional materials, e.g. thrombogenic, having filaments, having fibers, being coated
• CPC Class Codes: A61B 17/12168 having a mesh structure A61B17/1214 takes precedence
• CPC Class Codes: A61B 17/12172 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• CPC Class Codes: A61B 2017/00526 Methods of manufacturing
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014
• CPC Class Codes: A61B 2017/12054 Details concerning the detachment of the occluding device from the introduction device
• CPC Class Codes: A61B 2017/22038 with a guide wire
• CPC Class Codes: A61F 2/844 folded prior to deployment
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
• CPC Class Codes: A61F 2002/823 Stents, different from stent-grafts, adapted to cover an aneurysm
• CPC Class Codes: A61F 2002/9511 the retaining means being filaments or wires
• CPC Class Codes: A61L 2430/36 for embolization or occlusion, e.g. vaso-occlusive compositions or devices artificial blood vessels A61L27/507

Abstract

A vaso-occlusion system for occluding an aneurysm includes a delivery catheter having a delivery lumen extending therethrough, a pusher member at least partially extending through the delivery lumen, and a vaso-occlusive device loaded within the delivery lumen, the vaso-occlusive device comprising an expandable braid formed out of a plurality of elongate braid filaments, the elongate braid elements having respective proximal end portions that are formed into a flexible transition section having a proximal end portion attached to a distal end of the pusher member and/or to an elongate central member coupled to, and extending distally of, the pusher member.

Claims

1. A vaso-occlusion system for occluding an aneurysm, comprising:

a delivery catheter having a delivery lumen extending therethrough;

a pusher member at least partially extending through the delivery lumen; and

a vaso-occlusive device loaded within the delivery lumen, the vaso-occlusive device comprising an expandable braid formed out of a plurality of elongate braid filaments, the elongate braid filaments having respective proximal end portions that are formed into a flexible transition section having a proximal end portion attached to a distal end of the pusher member and/or to an elongate central member coupled to, and extending distally of, the pusher member,

wherein in the flexible transition section, the proximal end portions of the elongate braid filaments are unbraided to form straight filaments that are wound into a helical formation that spirals around the pusher member and/or elongate central member.

2. The vaso-occlusion system of claim 1, wherein the proximal end portions of the elongate braid filaments comprising the flexible transition section are heat seat into the helical formation.

3. The vaso-occlusion system of claim 1, the vaso-occlusive device comprising the elongate central member to which the flexible transition section is attached.

4. The vaso-occlusion system of claim 3, wherein the elongate central member comprises a coil.

5. The vaso-occlusion system of claim 3, wherein the proximal end portion of the flexible transition section is fused or otherwise attached to the elongate central member proximate a junction formed with the pusher member.

6. The vaso-occlusion system of claim 3, wherein the expandable braid comprises a tubular body portion.

7. The vaso-occlusion system of claim 6, wherein the elongate central member extends through a lumen formed by the tubular body portion.

8. A vaso-occlusion system for occluding an aneurysm, comprising:

a delivery catheter having a delivery lumen extending therethrough;

a pusher member at least partially extending through the delivery lumen; and

a vaso-occlusive device loaded within the delivery lumen, the vaso-occlusive device comprising an elongate central member coupled to, and extending distally of, the pusher member, and an expandable braid formed out of a plurality of elongate braid filaments having respective proximal end portions that are formed into a flexible transition section having a proximal end portion attached to a distal end of the elongate central member,

wherein the expandable braid comprises a tubular body portion, and

wherein the elongate central member extends alongside the tubular body portion.

9. The vaso-occlusion system of claim 8, wherein the elongate central member is attached to the tubular body portion at one or more axially spaced attachment locations.

10. The vaso-occlusion system of claim 9, wherein, at each attachment location, the elongate central member is attached to the tubular body portion by one or more respective elongate braid filaments.

11. A vaso-occlusive device, comprising:

an elongate central support member; and

an expandable braid formed out of a plurality of elongate braid filaments, the elongate braid filaments having respective proximal end portions that are formed into a flexible transition section having a proximal end portion attached to the elongate central member,

wherein in the flexible transition section, the proximal end portions of the elongate braid filaments are unbraided to form straight filaments that are wound into a helical formation that spirals around the elongate central member.

12. The vaso-occlusive device of claim 11, wherein the proximal end portions of the elongate braid filaments comprising the flexible transition section are heat seat into the helical formation.

13. The vaso-occlusive device of claim 11, wherein the elongate central member comprises a coil.

14. The vaso-occlusive device of claim 11, wherein the proximal end portion of the flexible transition section is fused or otherwise attached to the elongate central member proximate a junction formed with a pusher member.

15. The vaso-occlusive device of claim 11, wherein the expandable braid comprises a tubular body portion, and wherein the elongate central member extends through a lumen formed by the tubular body portion.

16. The vaso-occlusive device of claim 11, wherein the elongate central member extends alongside the tubular body portion, and wherein the elongate central member is attached to the tubular body portion by one or more respective elongate braid filaments at each of one or more axially spaced attachment locations.