SILICONE REFLUX VALVE FOR POLYMERIC STENTS

• US 20150045908A1
• Filed: 08/04/2014
• Published: 02/12/2015
• Est. Priority Date: 08/07/2013
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: McMahon, Shane
• Granted Patent: US 10,314,685 B2
• Time in Patent Office: Days
• US Class Current: 623/23.68
• CPC Class Codes: A61F 2/04 Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts A61F2/18, A61F2/20 take precedence; devices, other than stent-grafts, providing patency to, or preventing collapsing of, tubular structures of the body other than stent-grafts, e.g. stents A61F2/82; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2002/044 Oesophagi or esophagi or gullets

Abstract

An anti-reflux valve having a mesh scaffolding and a valve extending from the mesh scaffolding, the valve supported by a loop. The loop can be formed by a filament extending from the mesh scaffolding or by a loop filament separate from the filament(s) forming the mesh scaffolding.

Claims

1. An anti-reflux valve comprising:

a filament;

a mesh scaffolding comprising the filament, the mesh scaffolding having a distal scaffolding end;

a loop comprising the filament, the loop extending a distance from the distal scaffolding end; and

a valve connected to, and extending longitudinally from, the mesh scaffolding, wherein the valve comprises the loop.

2. The anti-reflux valve of claim 1, wherein the valve is an extension of a covering extending over the mesh scaffolding and the loop.

3. The anti-reflux valve of claim 1, wherein the filament comprises polyethylene terephthalate (PET) and the valve comprises silicone.

4. The anti-reflux valve of claim 1, wherein the mesh scaffolding has a proximal scaffolding end region, a scaffolding medial region, and a distal scaffolding end region wherein the scaffolding medial region has a smaller diameter than the proximal and distal scaffolding end regions.

5. The anti-reflux valve of claim 1, wherein the filament is a plurality of filaments, and one of the plurality of filaments has a greater length to form the loop.

6. The anti-reflux valve of claim 1, wherein the filament is a single filament.

7. The anti-reflux valve of claim 1, wherein the loop comprises a single cross-over of the filament.

8. An anti-reflux valve comprising:

a mesh scaffolding section comprising;

a filament forming a mesh scaffolding with a distal scaffolding end, the distal scaffolding end being an end of the mesh scaffolding section;

a covering extending over the mesh scaffolding;

a valve section extending from the mesh scaffolding section, the valve section comprising;

a valve, wherein the valve is an extension of the covering;

a loop, wherein the loop is formed by the filament extending for a distance from the distal scaffolding end so that the loop has a longitudinal length.

9. The anti-reflux valve of claim 8, wherein the filament comprises polyethylene terephthalate (PET) and the valve comprises silicone.

10. The anti-reflux valve of claim 8, wherein the mesh scaffolding has a proximal scaffolding end region, a scaffolding medial region, and a distal scaffolding end region wherein the scaffolding medial region has a smaller diameter than the proximal and distal scaffolding end regions.

11. The anti-reflux valve of claim 8, wherein the filament is a plurality of filaments, and one of the plurality of filaments has a greater length to form the loop.

12. The anti-reflux valve of claim 8, wherein the filament is a single filament.

13. The anti-reflux valve of claim 8, wherein the loop comprises a single cross-over of the filament.

14. A method of forming an anti-reflux valve comprising:

forming a mesh scaffolding from a filament, the filament further forming a loop positioned a distance from a scaffolding end; and

forming a valve from a polymeric material, the valve extending from the mesh scaffolding and including the loop.

15. The method of claim 14, wherein the polymeric material forming the valve further covers the mesh scaffolding.

16. The method of claim 14, wherein the filament comprises polyethylene terephthalate (PET) and the polymeric material comprises silicone.

17. The method of claim 14, wherein the mesh scaffolding is formed with a proximal end region, a medial region, and a distal end region wherein the medial region has a smaller diameter than the proximal and the distal end regions.

18. The method of claim 14, the filament being a plurality of filaments, wherein one of the plurality of filaments has a greater length to form the loop.

19. The method of claim 14, wherein the filament is a single filament.

20. The method of claim 14, wherein the loop comprises a single cross-over of the filament.