ASD closure device with self centering arm network

• US 20050065547A1
• Filed: 09/18/2003
• Published: 03/24/2005
• Est. Priority Date: 09/18/2003
• Status: Active Grant

• Current Assignee: Cardia, Inc.
• Original Assignee: Cardia, Inc.
• Inventors: Marino, Joseph A., Corcoran, Michael P.
• Granted Patent: US 7,144,410 B2
• Time in Patent Office: Days
• US Class Current: 606/213
• CPC Class Codes: A61B 17/0057 Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect sutures A61B17/04; closing rectum or urethra near body surface A61F2/0009
• CPC Class Codes: A61B 2017/00575 for closure at remote site, e.g. closing atrial septum defects
• CPC Class Codes: A61B 2017/00592 Elastic or resilient implements
• CPC Class Codes: A61B 2017/00606 Implements H-shaped in cross-section, i.e. with occluders on both sides of the opening
• CPC Class Codes: A61B 2017/00619 Locking means for locking the implement in expanded state
• CPC Class Codes: A61B 2017/00836 corrosion-resistant A61B2017/00853 takes precedence; preventing galvanic or electrolytic corrosion in prostheses A61F2210/0009
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014

Abstract

The present invention provides an occluder with a self centering system that keeps the occluder properly centered in a defect which allows the center of the occluder to remain properly positioned within the defect so that the left and right sides cover the entire defect which reduces the chance of blood shunting through the defect and increases the effectiveness of the occluder. The self centering system is comprised of a series of arms that provide tension to hold the right and left sides in place. The arms are shaped to provide a flexible intermediate zone comprising a left and a right conical shaped network, wherein each network extends from the right and left sides and narrows at the center section. The flexible intermediate zone centers the occluder and helps to hold it in place.

Claims

1. A self centering occlusion device, the device comprising:

a center post having a first and second side;

a first set of arms emanating from the second side of the center post and extending toward the first side;

a second set of arms emanating from the first side of the center post and extending toward the second side, wherein the first and second sets of arms define a flexible intermediate zone to center the device in an aperture; and

.

first and second sheets attached to the first and second set of arms, respectively.

2. The device of claim 1 wherein the arms comprise a bell shape.

3. The device of claim 1 wherein the arms are constructed of stranded wire.

4. The device of claim 1 wherein the sheets are constructed of non-thrombogenic polyvinyl alcohol foam.

5. A self centering occlusion device, the device comprising:

a center section extending in an axial direction having a distal and proximal end;

a first sheet located at the distal end of the center section;

a second sheet located at the proximal end of the center section;

a first set of arms extending from the proximal end of the center section and attaching to the first sheet;

a second set of arms extending from the distal end of the center section and attaching to the second sheet;

a first hoop attached to the first set of arms and the first sheet; and

a second hoop attached to the second set of arms and the second sheet.

6. The device post of claim 5 wherein the arms comprise a bell shape.

7. The device of claim 5 wherein the arms are constructed of stranded wire.

8. The device of claim 5 wherein the sheets are constructed of non-thrombogenic polyvinyl alcohol foam.

9. An occlusion device for occluding a septal defect, the occlusion device comprising:

a center post;

a first occluding body connected to the center post;

a second occluding body connected to the center post; and

sets of first and second arms emanating from the center post and forming a wire network having a flexible intermediate zone to center the device in an aperture.

10. The device post of claim 10 wherein the arms comprise a bell shape.

11. The device of claim 10 wherein the arms are constructed of stranded wire.

12. The device of claim 10 wherein the sheets are constructed of polyvinyl alcohol foam.

13. A self centering occlusion device for the closure of a physical anomaly, the device comprising:

an center post having distal and proximal ends;

a first set of support arms extending from the distal end of the center post toward the proximal end of the center post;

a first sheet attached to the first set of arms;

a first hoop attached to the first sets of arms and to the first sheet;

a second set of support arms extending from the proximal end of the center post toward the distal end of the center post;

a second sheet attached to the second set of support arms; and

a second hoop attached to the second sets of arms and to the second sheet.

14. The device post of claim 13 wherein the arms comprise a bell shape.

15. The device of claim 13 wherein the arms are constructed of stranded wire.

16. The device of claim 13 wherein the sheets are constructed of non-thrombogenic polyvinyl alcohol foam.

17. An occlusion device comprising:

a first and second collapsible support frame, each frame comprising a support hoop and wire arms, wherein the wire arms of the first and second collapsible support frames create a flexible intermediate zone to center the device;

a first sheet attached to the first collapsible support frame; and

a second sheet attached to the second collapsible support frame.

18. The device of claim 17 wherein the arms comprise a bell shape.

19. The device of claim 17 wherein the arms are constructed of stranded wire.

20. The device of claim 17 wherein the sheets are constructed of non-thrombogenic polyvinyl alcohol foam.