Which devices are commonly used for LAAO?

The Watchman device and Amplatzer Amulet are the most commonly used devices for Left Atrial Appendage Occlusion (LAAO) procedures. The Watchman device, developed by Boston Scientific, has gained significant attention and clinical acceptance for its effectiveness in reducing the risk of stroke in patients with non-valvular atrial fibrillation. It works by mechanically occluding the left atrial appendage, preventing blood clots that can form there from entering the systemic circulation.

The Amplatzer Amulet, developed by Abbott, is another popular option that also effectively occludes the left atrial appendage. This device has a unique design featuring a double-disc mechanism that can enhance stability and create a secure seal to prevent clot formation. Both devices have strong clinical data supporting their safety and efficacy for patients who are at increased risk of thromboembolic events due to atrial fibrillation, making them the leading choices in current practice.

The other devices listed are either not primarily associated with LAAO or are focused on different applications in cardiovascular care, thereby missing the specific context required for answering this question.