DEVICES, SYSTEMS, AND METHODS FOR INVERTING AND CLOSING THE LEFT ATRIAL APPENDAGE

摘要

Devices, systems, and methods are disclosed for inverting and closing a left atrial appendage. Certain methods include the steps of inverting a distal portion of a left atrial appendage and constraining the inverted portion using at least a snare device configured to be fit around the inverted portion of the left atrial appendage and closed, so that the inverted portion is securely circumscribed and closed. Devices and systems related to such methods are also described and include a catheter system comprising a vacuum tube and a snare slidably disposed within a catheter.

主权项

1. A system for inverting and closing a left atrial appendage, the system comprising:
a catheter configured for introduction into a mammalian blood vessel and advancement to a left atrium of a heart and into a left atrial appendage, the catheter comprising an elongated tubular body having a proximal end, a distal end, and defining a lumen extending between the proximal and distal ends; a vacuum tube comprising a proximal end, a distal end, and a first lumen extending between the proximal and distal ends, the distal end of vacuum tube configured to engage a targeted tissue; and a snare comprising an elongated wire having a proximal end, a distal end and a separation mechanism, the distal end configured to move from an open position to a closed position and the separation mechanism configured to detach the distal end from the proximal end upon activation; wherein the vacuum tube and the snare are slidably disposed within the lumen of the tubular body and each configured for advancement through the distal end of the tubular body.