Insert for a conduit

• US 20030139807A1
• Filed: 11/21/2002
• Published: 07/24/2003
• Est. Priority Date: 11/21/2001
• Status: Active Grant

• Current Assignee: Tayside Flow Technologies, Ltd.
• Original Assignee: Tayside Flow Technologies, Ltd.
• Inventors: Hood, Robert Gordon, Sarran, Christophe Emmanuel, Stonebridge, Peter Arno, Johnstone, Allana, Duff, Craig McLeod, Houston, John Graeme, Dick, John Bruce Cameron
• Granted Patent: US 7,331,989 B2
• Time in Patent Office: Days
• US Class Current: 623/1.38
• CPC Class Codes: A61F 2/06 Blood vessels
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/91 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
• CPC Class Codes: A61F 2002/068 Modifying the blood flow model, e.g. by diffuser or deflector
• CPC Class Codes: A61F 2210/0004 bioabsorbable
• CPC Class Codes: A61F 2220/0008 Fixation appliances for connecting prostheses to the body
• CPC Class Codes: A61F 2250/0013 for adjusting fluid pressure
• CPC Class Codes: F15D 1/04 Arrangements of guide vanes in pipe elbows or duct bends; Construction of pipe conduit elements for elbows with respect to flow, e.g. for reducing losses of flow

Abstract

There is disclosed an insert (2) for a conduit (4) adapted to effect helical flow in the conduit (4) comprising a longitudinally extending member having a helical formation.

Claims

1. An insert for a conduit the insert being adapted to effect helical flow in the conduit and comprising a longitudinally extending member defining at least a portion of a helix.

2. An insert according to claim 1, wherein the longitudinally extending member has an inwardly extending portion that extends inwardly of the helix and also extends lengthwise along the member.

3. An insert according to claim 2, wherein the inwardly extending portion extends along an edge of the longitudinally extending member.

4. An insert according to claim 2, wherein the longitudinally extending member has two inwardly extending portions, of which at least one extends along an edge of the longitudinally extending member.

5. An insert according to claim 2, wherein the inwardly extending portion extends lengthwise and intermediate the edges of the longitudinally extending member.

6. An insert according to claim 1, wherein the insert is adapted to lodge inside a vein or artery of the human or animal body, or a graft therein.

7. An insert according to claim 1, wherein the insert is adapted to lodge inside a stent in a vein or artery of the human or animal body, or a graft therein.

8. An insert according to claim 1, wherein the rotation of a helix is at least 50% of one revolution.

9. An insert according to claim 8, wherein the rotation of the helix is at least 70% of one revolution.

10. An insert according to claim 1, wherein the insert is manufactured from a material comprising a biocompatible material.

11. An insert according to claim 1, wherein the insert is manufactured from a material comprising a biodegradable material.

12. A stent comprising a tubular body section and an insert mounted within the body section, the insert comprising a longitudinally extending member defining at least a portion of a helix.

13. A stent according to claim 12, wherein the longitudinally extending member has an inwardly extending portion that extends inwardly away from the internal side-walls of the tubular body section.

14. A stent according to claim 13, wherein the inwardly extending portion is movable between the extended position and a collapsed position.

15. A stent according to claim 14, wherein the longitudinally extending member comprises an elastically compressible material.

16. A stent according to claim 12, wherein the insert has two inwardly extending portions extending along the length of the longitudinally extending member.

17. A stent according to claim 12, wherein the portion of a helix defined by the longitudinally extending member is at least 50% of one revolution.

18. The stent according to claim 17, wherein the portion of the helix is at least 70% of one revolution.

19. A stent according to claim 12, wherein the insert is mounted within a flexible tubular material and the flexible tubular material is mounted on the body section.