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It was reported that the patient experienced inadequate stimulation from the leads of the deep brain stimulation (dbs) causing their preexisting symptoms to return.The patient underwent a procedure in which two leads and the burr hole cover were explanted.The patient is doing well post operatively.We completed a good faith effort to obtain additional information, if additional details become available, a supplemental report will be submitted.
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We completed a good faith effort to obtain additional information, if additional details become available, a supplemental report will be submitted.Additional suspect medical device components involved in the event:
model number/catalog number: db-2202-45.Serial number: (b)(6).Batch/lot number: 7100318.Model/catalog description: dbs directional lead sterile kit 45cm.Unique identifier (udi) # (b)(4).Model number/catalog number: db-4600-c.Serial number: null.Batch/lot number: 30218376.Model/catalog description: db-4600-c.Unique identifier (udi) #(b)(4).
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It was reported that the patient experienced inadequate stimulation from the leads of the deep brain stimulation (dbs) causing their preexisting symptoms to return.The patient underwent a procedure in which two leads and the burr hole cover were explanted.The patient is doing well post operatively.It was additionally reported that the patient had an unrelated medical condition that may have contributed to the lack of therapy response, causing their preexisting symptoms of tremors to return affecting stimulation and therapy, however, device malfunction was not suspected.The devices will not be returned as they were discarded by the physician following the explant.
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Additional suspect medical device components involved in the event:
model number/catalog number: db-2202-45
serial number: (b)(6).Batch/lot number: 7100318.Model/catalog description: dbs directional lead sterile kit 45cm.Unique identifier (udi) # (b)(4).Model number/catalog number: db-4600-c.Serial number: null.Batch/lot number: 30218376.Model/catalog description: db-4600-c.Unique identifier (udi) # (b)(6).With all the available information, boston scientific concludes that the cause of the patient experiencing inadequate stimulation and undergoing an explant procedure in which the leads and the burr hole cover were explanted could not be confirmed.The devices were not returned therefore device analysis could not be done.A review of the manufacturing documentation for this device revealed that no anomalies or deviations related to the event occurred during manufacturing.The devices were discarded by the facility and not returned for analysis; therefore, a technical analysis could not be performed.A labeling review was performed on the devices' instructions for use, ifu.There was no evidence that the device was used in a manner inconsistent with the labeled indications.It states loss of adequate stimulation, weakness, muscle spasms, problems with movement, failure or malfunction of any part of the device, including but not limited to battery leakage, battery failure, lead or lead extension breakage, hardware malfunctions, loose connections, electrical shorts or open circuits, and lead insulation breaches, whether or not these problems require device removal and/or replacement.A review of the vercise? cartesia? hazard analysis was completed and confirmed that the event of stimulation inadequate and tremor were defined in the risk documentation.This event type has been accounted for during product risk analysis to support acceptable risk benefit for the product.Based on all available information, engineers are not able to confirm the root cause of the event.The devices were not returned, as such, physical analysis could not be conducted in our laboratory.Record review revealed no additional information related to the complaint.Therefore, this investigation is unable to determine a probable root cause for the complaint, and the conclusion is cause not established.
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