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Method and apparatus for patching a tissue opening
| Details |
Inventors: Frazier, Andrew G. C.; Lesh, Michael D.; Roue, Chad C.; van der Burg, Erik J.;
Assignee: Appriva Medical, Inc. (Sunnyvale, CA)
Primary Examiner: Mendez; Manuel
Assistant Examiner:
Attorney, Agent or Firm: Knobbe, Martens, Olson & Bear, LLP
Disclosed is a closure catheter, for patching a tissue opening such as an atrial septal defect, patent foreman ovale, or the left atrial appendage of the heart. The closure catheter carries a deployable patch and a plurality of tissue anchors, which may be deployed to secure the patch to surrounding tissue. Methods are also disclosed. |
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DETAILED DESCRIPTION The present invention provides a closure catheter and methods for closing an opening in tissue, a body lumen, hollow organ or other body cavity.
The catheter and methods of its use are useful in a variety of procedures, such as treating (closing) wounds and naturally or surgically created apertures or passageways.
Applications include, but are not limited to, atrial septal defect closure, patent ductus arteriosis closure, aneurysm isolation and graft and/or bypass anastomosis procedures.
There is provided in accordance with one aspect of the present invention, a method of patching an intracardiac septal defect such as an atrial septal defect.
The method comprises the steps of providing a catheter having an elongate flexible body with a proximal end and a distal end, a patch and at least two anchors removably carried by the distal end.
The distal end is advanced to a position near the atrial septal defect, and the patch is positioned across the defect.
The anchors are thereafter deployed from the catheter to secure the patch across the defect.
In one embodiment, the positioning step comprises enlarging the cross section of the patch from a reduced profile for advancing the catheter, to an enlarged profile for patching the defect.
The positioning step comprises inclining at least one patch support from an axial orientation to an inclined orientation to position the patch across the defect.
The positioning step preferably comprises inclining at least three patch supports from an axial orientation to an inclined orientation to position the patch across the defect.
In one embodiment, the deploying the anchors step comprises advancing the anchors distally through the patch and into tissue adjacent the defect to secure the patch across the defect.
In accordance with another aspect of the present invention, there is provided a method of closing an opening in a subcutaneous tissue plane.
The method comprises the steps of providing a catheter having a patch and at least one anchor
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Heart Surgery 
