(b)(4).The results of the investigation are inconclusive since the device was not returned for analysis.Our investigation was limited to the review of the device history record, which showed that each manufacturing and inspection operation was performed and indicated complete in accordance with sjm specifications and procedures.Based on the information received, the cause of the reported incident could not be conclusively determined.
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On (b)(6) 2015, the patient's atrial septal defect size was measured by both transthoracic echocardiography (tee) and a sizing balloon.The patient's defect size measured 3mm larger with the sizing balloon.A 16mm amplatzer septal occluder (aso) was selected for use and deployed.After confirming the position by tee, the aso was detached from the delivery cable and shortly after, the aso gradually embolized into the left ventricle.The patient underwent surgical removal of the aso and patch closure of the asd that afternoon.On (b)(6) 2015, the patient was discharged from the hospital.According to the surgeon, the aso was unstable to due to the patient's anatomy (small rim and thin septum primum).
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