Safety and Efficacy of Left Atrial Appendage Occlusion Devices

The LARIAT snare device is an over-the-wire device guided over the LAA to enable ligation of the LAA. The LARIAT can be opened and closed as desired for ideal positioning without risk of suture deployment.

The WATCHMAN is an expandable device deployed in the LAA via a trans-septal catheter. The implanted device has a self-expanding nitinol frame to secure it in the LAA. The fabric of the WATCHMAN device is permeable to blood.