Date of event estimated.During processing of this incident, attempts were made to obtain complete patient information.Further information was requested but not received.The allegation is against [1] of [2] [lead]; however, it is unknown which [lead(s)], therefore, all potential components are being listed.Additional components potentially involved in the event include: common device name: lead, model: 3146ans, udi: (b)(4), serial: (b)(6), batch: 10075733.".
Event or Problem Description
It was reported that the patient's lead had migrated and as a result was experiencing ineffective therapy.Surgical intervention took place where the lead was explanted to address the issue.Investigation was unable to determine which of the leads attributed to the event.
Additional Manufacturer Narrative
Date of event estimated.The results of the investigation are inconclusive as the device was not returned for evaluation.Based on the information received, a single definitive root cause for the issue encountered was unable to be conclusively determined.