Filter apparatus for ostium of left atrial appendage

• US 20040049210A1
• Filed: 09/05/2003
• Published: 03/11/2004
• Est. Priority Date: 10/27/1999
• Status: Abandoned Application

• Current Assignee: David Holmes, Gregg S. Sutton, Jeffrey Welch, Robert A. Vantassel, Robert G. Hauser, Robert Schwartz, Thomas E. Borillo
• Original Assignee: David Holmes, Gregg S. Sutton, Jeffrey Welch, Robert A. Vantassel, Robert G. Hauser, Robert Schwartz, Thomas E. Borillo
• Inventors: Holmes, David, Schwartz, Robert, Welch, Jeffrey, Sutton, Gregg S., VanTassel, Robert A., Hauser, Robert G., Borillo, Thomas E.
• Application Number:
  US10/655,867
• Publication Number:
  US 20040049210A1
• Time in Patent Office: Days
• US Class Current: 606/151
• CPC Class Codes: A61B 17/00234 for minimally invasive surgery A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• 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 17/0643 with separate closing member, e.g. for interlocking with staple
• 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 17/12122 within the heart for closing a cardiac septal defect A61B17/0057
• CPC Class Codes: A61B 17/12131 characterised by the type of occluding device
• CPC Class Codes: A61B 17/12136 Balloons
• CPC Class Codes: A61B 17/12159 Solid plugs; being solid before insertion
• CPC Class Codes: A61B 17/12172 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• 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 2017/00628 T-shaped occluders
• CPC Class Codes: A61B 2017/0641 having at least three legs as part of one single body
• 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 2/0103 With centering means
• 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 2230/008 paraboloidal

Abstract

A membrane applied to the ostium of an atrial appendage is disclosed. The membrane prevents blood clots in the atrial appendage from escaping therefrom and entering the blood stream which can result in a blocked blood vessel, leading to strokes and heart attacks. The membrane may be permeable or impermeable with respect to blood flow. The membrane is configured to extend over the ostium of the left atrial appendage. The membrane has an outer periphery with a dimension larger than a corresponding dimension of the ostium. Securement means is provided to secure the outer periphery of the membrane in direct engagement with the atrial wall surrounding the ostium. The securement means may located between the membrane and the atrial wall, or the securement means may extend distally from the membrane through the ostium.

Claims

1. Apparatus for attachment over an ostium of a left atrial appendage in a patient, comprising:

a membrane configured to extend over the ostium of the left atrial appendage, the membrane having an outer periphery with a dimension larger than a corresponding dimension of the ostium; and

securement means to secure the outer periphery of the membrane in direct engagement with the atrial wall surrounding the ostium.

2. The apparatus defined in claim 1, wherein the securement means is located between the outer periphery of the membrane and the atrial wall surrounding the ostium.

3. The apparatus defined in claim 2, wherein the securement means comprises an adhesive applied between the outer periphery of the membrane and the atrial wall surrounding the membrane.

4. The apparatus defined in claim 3, wherein the adhesive is cyanoacrylate.

5. The apparatus defined in claim 2, wherein the securement means comprises a plurality of engagement members attached to the membrane at a plurality of locations about the outer periphery of the membrane.

6. The apparatus defined in claim 5, wherein the engagement members are configured to penetrate the atrial wall surrounding the ostium.

7. The apparatus defined in claim 6, wherein the engagement members each comprise a barbed configuration to engage the atrial wall surrounding the ostium to inhibit removal of the engagement member from the atrial wall.

8. The apparatus defined in claim 5, wherein the engagement members each comprise a shank portion extending distally from the outer periphery of the membrane and at least partially into the ostium.

9. The apparatus defined in claim 8, wherein the engagement members mounted on opposite sides of the membrane define a spacing substantially identical to an interior dimension of the ostium.

10. The apparatus defined in claim 8, wherein the engagement members each comprise a barbed configuration to engage an interior wall of the atrial appendage.

11. The apparatus defined in claim 1, wherein the securement means comprises a structure configured to extend distally from the membrane into the ostium and to engage a portion of the interior the left atrial appendage.

12. The apparatus defined in claim 11, wherein the securement means is configured for enlargement in response to expansion of an expansion structure located in an interior portion of the securement means.

13. The apparatus defined in claim 11, wherein the securement means is resiliently biased in a enlarged configuration for engagement with the interior wall of the left atrial appendage and may be constrained in a reduced size configuration for installation in the left atrial appendage.

14. The apparatus defined in claim 1, wherein the membrane has a permeable structure which allows blood to flow through the membrane but substantially inhibits thrombus from passing therethrough.

15. The apparatus defined in claim 1, wherein the membrane has an impermeable structure which substantially inhibits thrombus and blood from passing therethrough.

16. The apparatus defined in claim 1, wherein the securement means comprises membrane supporting structure attached to the outer periphery of the membrane and configured to extend radially outward from the ostium to secure the outer periphery of the membrane in direct engagement with the atrial wall surrounding the ostium.