VASCULAR PLUG

• US 20140330303A1
• Filed: 05/02/2014
• Published: 11/06/2014
• Est. Priority Date: 05/02/2013
• Status: Active Grant

• Current Assignee: Cook Medical Technologies, LLC (Cook Group Incorporated)
• Original Assignee: Cook Medical Technologies, LLC (Cook Group Incorporated)
• Inventors: Hansen, Christina Rauff
• Granted Patent: US 10,016,201 B2
• Time in Patent Office: Days
• US Class Current: 606/200
• CPC Class Codes: A61B 17/12031 complete occlusion
• CPC Class Codes: A61B 17/12109 in a blood vessel
• CPC Class Codes: A61B 17/12172 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• CPC Class Codes: A61B 17/12177 comprising additional materials, e.g. thrombogenic, having filaments, having fibers or being coated
• CPC Class Codes: A61B 2017/1205 Introduction devices
• CPC Class Codes: A61F 2/0105 Open ended, i.e. legs gathered only at one side
• CPC Class Codes: A61F 2/011 Instruments for their placement or removal
• CPC Class Codes: A61F 2002/016 made from wire-like elements
• CPC Class Codes: A61F 2230/0008 elliptical or oval
• CPC Class Codes: A61F 2230/001 Figure-8-shaped, e.g. hourglass-shaped
• CPC Class Codes: A61F 2230/0091 helically-coiled or spirally-coiled, i.e. having a 2-D spiral cross-section
• CPC Class Codes: A61F 2230/0095 Saddle-shaped

Abstract

A vascular plug has a frame or skeleton which includes a ring of spring material and, attached to the frame, a cover of impervious or porous material. The plug is able to open a cup configuration when in a deployed condition, so as to provide an occlusion barrier to blood flow. The frame can be radially contracted by twisting into a multi-coiled configuration for deployment through an introducer. The vascular plug has a very short deployment length, making it suitable for deployment in precise locations and is also able to expand to a variety of operating diameters, thereby being suitable for a range of vessel sizes.

Claims

1. A vascular plug including at least one resilient frame element, a cover attached to the at least one resilient frame, the frame element having a first, radially expanded deployed condition and a second, multi-coil configuration in which the coils lie adjacent and substantially coaxial with one another, the frame element being compressible by twisting from the first to the second configuration, wherein when in the second configuration, the plug is not substantially lengthened from the first condition.

2. A vascular plug according to claim 1, wherein the at least one resilient frame element is in the form of a ring to which the cover is fitted.

3. A vascular plug according to claim 1, wherein the first frame element is constrained into a curved shape.

4. A vascular plug according to claim 3, wherein the first frame element is constrained into the curved shape by the cover or a tether.

5. A vascular plug according to claim 1, including a second frame element coupled to the resilient frame element.

6. A vascular plug according to claim 5, wherein the second frame element includes a frame ring constrained to an oval shape by a cover or tether.

7. A vascular plug according to claim 5, including a second cover extending between the resilient frame element and the second frame element.

8. A vascular plug according to claim 7, wherein the second frame element and/or the second cover cause the resilient frame element to curve in a direction orthogonal to the or a curvature of the first occluding barrier.

9. A vascular plug according to claim 5, including a third cover extending across the second frame element.

10. A vascular plug according to claim 5, wherein the second frame element is deformable to the resilient frame element so as substantially to align with the resilient frame element.

11. A vascular plug according to claim 1, wherein in the radially expanded deployed condition the resilient frame element provides an outer perimeter of the plug, which outer perimeter in use abuts against a vessel wall and the or a second cover extends across the outer perimeter.

12. A vascular plug according to claim 1, wherein each frame element is in the form of at least one ring.

13. A vascular plug according to claim 1, wherein each frame element is formed of a spring material.

14. A vascular plug according to claim 1, wherein each frame element is formed from a shape memory material.

15. A vascular plug according to claim 1, wherein the cover or covers are made of an impervious material, a substantially impervious material, a porous material, a mesh or any combination thereof.

16. A vascular plug according to claim 1, wherein at least one cover is formed of ultra-high-molecular-weight polyethylene.

17. A vascular plug according to claim 1, wherein the resilient frame element is compressible by twisting to a diameter 5 to 10 times smaller than its diameter in its radially expanded deployed condition.

18. An introducer assembly including a delivery catheter;

and a vascular plug according to claim 1 disposed in the delivery catheter;

wherein the vascular plug is disposed in the delivery catheter in the multi-coil configuration.

19. An introducer assembly according to claim 18, including a pusher element disposed in the delivery catheter, the pusher element including a distal end adjacent the vascular plug.