The Simplified Extraction of Atrial Tumor With Targeted Loop Electricity (SEATTLE) Procedure

Right atrial thrombus removal with use of the ŌNŌ retrieval device

“…Though many transcatheter mechanical aspirations and thrombolytic systems have been developed, transcatheter extraction of large pedunculated masses has significant risks given the lack of an appropriate device. Though initially designed to extract embolized cardiac devices, others teams have extracted cardiac tumors and a leadless pacemaker utilizing the novel ŌNŌ Retrieval Device 2,3 . To our knowledge, this is the first reported case of successful extraction of a large thrombus utilizing this device, highlighting how it has expanded our ability to successfully extract such masses.…”

Myxoma involving the pulmonary valve – A case report of an atypical cardiac tumor, treated using an unusual approach

“…The percutaneous approach is associated with an increased risk of stroke and has been used in few cases previously. In the SEATTLE technique a Basket device and snare were used to remove right atrial myxoma [ 12 ] . Konecny et al also proposed the use of a radiofrequency ablation catheter to remove a right-sided cardiac myxoma [ 13 ] .…”

Retrieval of Large Balloon Fragments During Transcatheter Pulmonary Valve Implantation Using a Novel Retrieval System

“…The retrieval system used in these cases is a recently Food and Drug Administration–approved braided nitinol basket used to facilitate retrieval of large embolized objects; since it became available, it has been used to successfully retrieve atrial thrombus, atrial tumors, atrial septal defect devices, and other intracardiac foreign bodies. 6 , 7 , 8 , 9 The retrieval basket is flared distally such that backward tension on the shaft outside of the body is converted to radial compression force within the basket. The inward radial force aligns the object coaxially with the sheath, allowing safe compression of the snared object into the retrieval sheath.…”