OCCLUSION DEVICE COMBINATION OF STENT AND MESH HAVING OFFSET PARALLELOGRAM POROSITY

• US 20070276470A1
• Filed: 05/26/2006
• Published: 11/29/2007
• Est. Priority Date: 05/26/2006
• Status: Active Grant

• Current Assignee: Codman & Shurtleff Incorporated (Johnson & Johnson)
• Original Assignee: Codman & Shurtleff Incorporated (Johnson & Johnson)
• Inventors: Tenne, Dirk
• Granted Patent: US 8,118,859 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 parallelogram-shaped openings in the compressed condition arranged in longitudinal rows, the openings being axially offset from each other. 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;

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 parallelogram-shaped openings in the compressed condition, and wherein the screen member has a porosity in the expanded condition less than the porosity of the support member in the expanded condition; and

each said opening is defined by a pair of upwardly inclined parallel edges intersecting a pair of downwardly inclined parallel edges, wherein one of the pairs of parallel edges is longer than the other one of the pairs of parallel edges, and adjacent intersecting edges define an opening angle.

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 parallelogram-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 the longer pair of parallel edges is at least 1.5 times as long as the shorter pair of parallel edges.

9. The occlusion device of claim 1, wherein at least one of the parallelogram-shaped openings has an upward attitude and at least one of the parallelogram-shaped openings has a downward attitude.

10. The occlusion device of claim 9, wherein the parallelogram-shaped openings are arranged in longitudinally extending rows, and wherein the parallelogram-shaped openings of adjacent rows have opposite attitudes.

11. The occlusion device of claim 9, wherein the upward attitude and the downward attitude each are at an angle less than said opening angle.

12. The occlusion device of claim 1, wherein said opening angle as manufactured is between about 5 and about 30 degrees.

13. 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 at least in the expanded condition;

a generally tubular screen member 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, said screen member having a plurality of substantially parallelogram-shaped openings in the compressed condition, and wherein the screen member has a porosity in the expanded condition less than the porosity of the support member in the expanded condition;

each said opening is defined by a pair of upwardly inclined parallel edges at an upward attitude and intersecting a pair of downwardly inclined parallel edges at a downward attitude, adjacent edges defining an opening angle, wherein one of the pairs of parallel edges is at least twice as long as the other one of the pairs of parallel edges;

said upward attitude and downward attitude each are at an angle less than said opening angle; and

said screen member has an opening-to-material ratio falling within the range of approximately 1.5;

1 and approximately 4;

1.

14. The occlusion device of claim 13, wherein an edge of the screen member has a generally sinusoidal configuration.

15. The occlusion device of claim 13, wherein the opening angle as manufactured is between about 5 degrees and about 30 degrees.

16. 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 attached to the support member and radially expandable from a compressed condition to an expanded condition with the support member, further comprising a plurality of substantially parallelogram-shaped openings in the compressed condition, and wherein the screen member has a porosity in the expanded condition less than the porosity of the support member in the expanded condition, the porosity of the screen member being at least about 60%;

said openings are defined by a pair of upwardly inclined parallel edges intersecting a pair of downwardly inclined parallel edges, wherein one of the pairs of parallel edges is longer than the other one of the pairs of parallel edges and adjacent intersecting edges define an opening angle; and

said opening angle as manufactured is between about 5 degrees and about 30 degrees.

17. The occlusion device of claim 16, wherein an edge of the outer screen member has a generally sinusoidal configuration.

18. The occlusion device of claim 16, wherein said screen members each have an opening-to-material ratio falling within the range of approximately 1.5:

1 and approximately 4;

1.

19. The occlusion device of claim 16, wherein the longer pair of parallel edges of the screen member is at least 1.5 times as long as the shorter pair of parallel edges of the screen member.

20. The occlusion device of claim 16, wherein at least one of the parallelogram-shaped openings of the screen member has an upward attitude and at least one of the parallelogram-shaped openings of the screen member has a downward attitude.

21. The occlusion device of claim 20, wherein the parallelogram-shaped openings of the screen member are arranged in rows, and wherein the parallelogram-shaped openings of adjacent rows of the screen member have opposite attitudes.