<qa>  What is the purpose of the LAAC technology?The WATCHMANTM Left Atrial Appendage Closure LAAC Technology is intended to prevent thrombus embolization from the left atrial appendage and reduce the risk of life-threatening bleeding events in patients with non-valvular atrial fibrillation who are eligible for anticoagulation therapy or who have a contraindication to anticoagulation therapy. 