Device for left atrial appendage occlusion

• US 8,523,897 B2
• Filed: 09/27/2006
• Issued: 09/03/2013
• Est. Priority Date: 11/06/1998
• Status: Expired due to Fees

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Atritech Inc. (Boston Scientific Corporation)
• Inventors: van der Burg, Erik J., De Cicco, Dino, Frazier, Andrew G. C., Khairkahan, Alex K., Kriedler, Marc S., Lesh, Michael D., Roue, Chad C.
• Primary Examiner(s): NGUYEN, TUAN VAN
• Application Number:
  US11/529,707
• Publication Number:
  US 20070083227A1
• Time in Patent Office: 2,533 Days
• Field of Search: 606190-200, 606/128, 606/159, 606/167, 606/170, 606/171, 606/157, 606/113, 606/114, 128/887
• US Class Current: 606/200
• 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 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 17/12031 complete occlusion
• CPC Class Codes: A61B 17/12122 within the heart for closing a cardiac septal defect A61B17/0057
• 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 17/12186 liquid materials adapted to be injected
• CPC Class Codes: A61B 17/12195 comprising a curable material
• CPC Class Codes: A61B 17/122 Clamps or clips , e.g. for the umbilical cord for the vas deferens A61F6/206
• CPC Class Codes: A61B 2017/00243 cardiac
• CPC Class Codes: A61B 2017/00557 inflatable A61B2017/22051 takes precedence
• CPC Class Codes: A61B 2017/00575 for closure at remote site, e.g. closing atrial septum defects
• CPC Class Codes: A61B 2017/00579 Barbed implements
• CPC Class Codes: A61B 2017/00592 Elastic or resilient implements
• CPC Class Codes: A61B 2017/00597 Implements comprising a membrane
• CPC Class Codes: A61B 2017/00601 Implements entirely comprised between the two sides of the opening
• CPC Class Codes: A61B 2017/00615 Implements with an occluder on one side of the opening and holding means therefor on the other
• CPC Class Codes: A61B 2017/00619 Locking means for locking the implement in expanded state
• CPC Class Codes: A61B 2017/00632 Occluding a cavity, i.e. closing a blind opening
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014
• CPC Class Codes: A61B 2017/081 : Tissue approximator A61B2017/1103, A61B17/8866 take precedence
• CPC Class Codes: A61B 2017/1205 : Introduction devices
• CPC Class Codes: A61F 2/01 : Filters implantable into blood vessels
• CPC Class Codes: A61F 2002/018 : made from tubes or sheets of material, e.g. by etching or laser-cutting
• CPC Class Codes: A61F 2230/0006 : circular
• CPC Class Codes: A61F 2230/0069 : cylindrical
• CPC Class Codes: A61F 2230/0071 : spherical
• CPC Class Codes: A61F 2230/008 : paraboloidal
• CPC Class Codes: A61M 2025/1054 : having detachable or disposable balloons
• CPC Class Codes: A61M 2210/125 : Heart
• CPC Class Codes: A61M 25/10 : Balloon catheters A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02; inflatable balloons for placing stents or stent-grafts A61F2/958 ; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00

Abstract

An implantable device for containing emboli within an atrial appendage may include an expandable frame having a plurality of supports projecting distally from a proximal hub, a mesh barrier provided on proximal sections of the supports, and a plurality of tissue anchors provided on the supports for engaging tissue when the device is positioned in an atrial appendage.

Claims

1. An implantable device for containing emboli within an atrial appendage of a patient, the device having a proximal end and a distal end and comprising:

an expandable frame comprising a plurality of supports projecting distally from a proximal hub at the proximal end toward the distal end, wherein the supports comprise proximal sections adjacent to said proximal hub and distal sections distal to said proximal sections;

a mesh barrier provided on said proximal sections of supports; and

a plurality of tissue anchors provided on said supports for engaging tissue when the device is positioned in an atrial appendage.

2. A device as in claim 1, wherein the expandable frame comprises at least five supports.

3. A device as in claim 1, wherein each support is movable from an axial orientation when the device is in a reduced cross section to an inclined orientation when the device is in an enlarged cross section.

4. A device as in claim 1, wherein the mesh barrier is secured to the plurality of supports.

5. A device as in claim 4 wherein said mesh barrier is disposed over the plurality of supports.

6. A device as in claim 1, wherein the plurality of tissue anchors are barbs having a free end inclined in the proximal direction.

7. A device as in claim 6 wherein each barb is cut from the corresponding support.

8. A device as in claim 1 wherein the plurality of tissue anchors are distal the mesh barrier.

9. A device as in claim 1, wherein the supports are cut from a tube.

10. A device as in claim 1, wherein the frame when expanded has a generally cylindrical shape.

11. A device as in claim 1, wherein the supports are made of nitinol.

12. A device as in claim 1, wherein the supports are self expanding.

13. The device of claim 1, wherein the plurality of tissue anchors dispose the barrier to form a substantial seal between an outer periphery of the barrier and an inside surface of the atrial appendage.