OCCLUSION DEVICE COMBINATION OF STENT AND MESH WITH DIAMOND-SHAPED POROSITY

• US 20070276469A1
• Filed: 05/26/2006
• Published: 11/29/2007
• Est. Priority Date: 05/26/2006
• Status: Active Grant

• Current Assignee: DePuy Synthes Products LLC (Johnson & Johnson)
• Original Assignee: DePuy Synthes Products LLC (Johnson & Johnson)
• Inventors: Tenne, Dirk
• Granted Patent: US 8,690,938 B2
• Time in Patent Office: Days
• US Class Current: 623/1.380
• CPC Class Codes: A61B 17/12022 Occluding by internal devices, e.g. balloons or releasable wires plugging an opening in the wall of an organ A61B17/0057; occluders for the cervical canal A61F6/146; vas deferens occluders A61F6/20
• CPC Class Codes: A61B 17/12136 Balloons
• CPC Class Codes: A61B 17/12172 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014

Abstract

An occlusion device for implantation within a body vessel is provided with a screen member and an associated support member. The occlusion device is radially expandable from a compressed condition, suitable for inserting the device in an introducer, to a deployed or expanded condition within a vessel. The screen member includes a plurality of substantially diamond-shaped openings in the compressed and expanded conditions. The porosity of the screen member is less than the porosity of the support member in the expanded condition.

Claims

1. An occlusion device for occluding at least a portion of a body vessel in a human subject, comprising:

a generally tubular support member radially expandable from a compressed condition to an expanded condition for occlusion action within a body vessel, wherein the support member has a porosity in at least the expanded condition; and

a generally tubular screen member associated with at least a portion of the support member and radially expandable from a compressed condition to an expanded condition with the support member, further comprising a plurality of substantially diamond-shaped openings that are diamond-shaped in both the compressed condition and in the expanded condition, wherein the screen member has a porosity in the expanded condition less than the porosity of the support member in the expanded condition.

2. The occlusion device of claim 1, wherein the screen member overlays at least a portion of the support member.

3. The occlusion device of claim 2, further including an additional screen member having a plurality of diamond-shaped openings, and wherein the support member overlays said additional screen member.

4. The occlusion device of claim 1, wherein at least a portion of the screen member is received within the support member.

5. The occlusion device of claim 4, further including an additional support member, and wherein the screen member overlays at least a portion of said additional support member.

6. The occlusion device of claim 1, wherein an edge of the screen member has a generally sinusoidal configuration.

7. The occlusion device of claim 1, wherein said screen member has an opening-to-material ratio falling within the range of approximately 1.5:

1 and approximately 4;

1.

8. The occlusion device of claim 1, wherein said screen member is substantially comprised of a material having shape memory properties.

9. The occlusion device of claim 8, wherein said material having shape memory properties is nitinol.

10. The occlusion device of claim 9, wherein said nitinol is a martensite thin film at human body temperature.

11. The occlusion device of claim 9, wherein said nitinol is an austenite thin film at human body temperature.

12. The occlusion device of claim 1, wherein said screen member is substantially comprised of a polymeric material.

13. The occlusion device of claim 1, wherein at least one corner of each of a plurality of said diamond-shaped openings is flattened or rounded in the compressed condition.

14. An occlusion device for occluding at least a portion of a body vessel in a human subject, comprising:

a generally tubular support member radially expandable from a compressed condition to an expanded condition for occlusion action within a body vessel, wherein the support member has a porosity in at least the expanded condition;

a generally tubular screen member extending with and received on at least a portion of the support member and radially expandable from a compressed condition to an expanded condition with the support member, the screen member further comprising a plurality of substantially diamond-shaped openings in both the compressed condition and in the expanded condition, wherein the screen member has a porosity in the expanded condition less than the porosity of the support member in the expanded condition; and

said screen member is comprised of a nitinol material and has an opening-to-material ratio falling within the range of approximately 1.5;

1 and approximately 4;

1.

15. The occlusion device of claim 14, wherein an edge of the screen member has a generally sinusoidal configuration.

16. The occlusion device of claim 14, wherein said screen member diamond-shaped openings have an opening angle in their compressed condition of between about 20 and 35 degrees.

17. The occlusion device of claim 14, wherein said screen member diamond-shaped openings impart a porosity to said screen member of between about 60 percent and 80 percent.

18. The occlusion device of claim 14, wherein said nitinol is a martensite thin film at human body temperature.

19. The occlusion device of claim 14, wherein said nitinol is an austenite thin film at human body temperature.

20. The occlusion device of claim 14, wherein at least one corner of each of a plurality of said diamond-shaped openings is flattened or rounded in the compressed condition.

21. An occlusion device for occluding at least a portion of a body vessel in a human subject, comprising:

a generally tubular support member radially expandable from a compressed condition to an expanded condition for occlusion action within a body vessel, wherein the support member has a porosity in at least the expanded condition;

a generally tubular inner screen member at least partially received within the support member and radially expandable from a compressed condition to an expanded condition with the support member, the screen member having a plurality of substantially diamond-shaped openings in both the compressed condition and in the expanded condition; and

a generally tubular outer screen member overlaying at least a portion of the support member and radially expandable from a compressed condition to an expanded condition with the support member, the screen member having a plurality of substantially diamond-shaped openings in both the compressed condition and in the expanded condition, wherein at least one of the screen members has a porosity in the expanded condition less than the porosity of the support member in the expanded condition.

22. The occlusion device of claim 21, wherein each screen member has an edge of a generally sinusoidal configuration.

23. The occlusion device of claim 21, wherein each said screen member has an opening-to-material ratio falling within the range of approximately 1.5:

1 and approximately 4;

1.

24. The occlusion device of claim 21, wherein said screen members are substantially comprised of a material having superelastic properties.

25. The occlusion device of claim 24, wherein said material having superelastic properties is nitinol.

26. The occlusion device of claim 21, wherein at least one corner of each of a plurality of said diamond-shaped openings is flattened or rounded in the compressed condition.