(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) 2016, a double valve replacement was performed and this 29mm masters series mechanical heart valve was implanted in the patient's mitral position.As the patient was removed from bypass, the patient's left ventricle ruptured.The ruptured ventricle was immediately repaired and this 29mm masters series valve was explanted.Per report, the surgeon believed the 29mm masters series valve was oversized and a 25mm masters series mechanical heart valve was implanted.(no information was provided about the valve that was implanted in the aortic position.There were no observations made related to the aortic valve.).
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