“…37,40,42,64,67 Two alternative concepts to achieve LAA occlusion are obstruction of the LAA orifice with an occlusion device 41,45,48,68 or percutaneous suture ligation using an endocardial/epicardial approach. 47 Currently, three entirely catheter-based devices are commercially used for mechanical orifice obstruction, the Watchman and WaveCrest devices and the ACP.…”