MAUDE Adverse Event Report: ST. JUDE MEDICAL, INC.(CRM-SUNNYVALE) UNIFY CRT-D; IMPLANTABLE CARDIOVERTER DEFIBRILLATOR

Model Number	CD3231-40Q
Medical Device Problem Codes	Premature Discharge of Battery (1057); Difficult to Interrogate (1331)
Health Effect - Clinical Code	No Known Impact Or Consequence To Patient (2692)
Date of Event	12/09/2019
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
The results/method and conclusion codes along with investigation results will be provided in the final report.
Event or Problem Description
It was reported during an implant of an epicardial lv lead, an attempt to interrogate the device was performed.After multiple attempts and with two different programmers, it was unable to communicate with the device.After discussing the situation, the conclusion was that the battery was early depleted.The device was replaced without problem and the patient was stable after the procedure.
Additional Manufacturer Narrative
Premature battery depletion was confirmed by analysis.No sources of high current were noted.The cause of the premature battery depletion was consistent with li cluster formation.From these analyses, in the absence of high current draw, it is probable that the premature battery depletion was caused by a lithium cluster induced short circuit.Li clusters are a known depletion mechanism for these advisory products that has been investigated and associated with a field action in october 2016.

• Brand Name: UNIFY CRT-D
• Common Device Name: IMPLANTABLE CARDIOVERTER DEFIBRILLATOR
• Manufacturer (Section D): ST. JUDE MEDICAL, INC.(CRM-SUNNYVALE); 645 almanor avenue; sunnyvale CA 94085
• MDR Report Key: 9528275
• Report Number: 2938836-2019-17761
• Device Sequence Number: 388811
• Product Code: NIK
• UDI-Device Identifier: 05414734504393
• UDI-Public: 05414734504393
• Combination Product (Y/N): N
• Initial Reporter State: GA
• Initial Reporter Country: US
• PMA/510(K) Number: P030054
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2011
• Device Explanted Year: 2019
• Reporter Type: Manufacturer
• Report Source: company representative,health
• Initial Reporter Occupation: Physician
• Remedial Action: Recall
• Type of Report: Initial,Followup
• Report Date (Section B): 04/08/2020

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: Yes
• Operator of Device: Health Professional
• Device Expiration Date: 04/30/2012
• Device Model Number: CD3231-40Q
• Device Catalogue Number: CD3231-40Q
• Device Lot Number: 3234039
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 12/18/2019
• Was the Report Sent to FDA?: No
• Initial Date Received by Manufacturer: 12/09/2019
• Supplement Date Received by Manufacturer: 04/02/2020
• Initial Report FDA Received Date: 12/28/2019
• Supplement Report FDA Received Date: 04/08/2020
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• If action reported to FDA under 21 USC 360i(g), list FDA-assigned Recall Number or include a statement: Z-0116-2017
• Patient Sequence Number: 1
• Outcome Attributed to Adverse Event: Required Intervention