Date of event and patient's weight is estimated.Additional components potentially involved in the event include: common device name: quattrode lead wide spaced, 60 cm, model: 3166, udi: (b)(4), serial: (b)(6), batch: 7967195, 7967195, 7967195.The results of the investigation are inconclusive since the devices were not returned for analysis.Based on the information received, the cause of the reported event could not be conclusively determined.
Event or Problem Description
It was reported that the patient experienced ineffective therapy.As a result, surgical intervention was undertaken on (b)(6) 2026 wherein the system was explanted to address the issue.It is unknown which lead caused ineffective therapy.