MAUDE Adverse Event Report: THORATEC CORPORATION HEARTMATE II SYSTEM CONTROLLER, US, EP; VENTRICULAR (ASSIST) BYPASS

Model Number	103696
Medical Device Problem Code	Improper or Incorrect Procedure or Method (2017)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	03/21/2023
Type of Reportable Event	Malfunction
Event or Problem Description
It was reported that the patient complained the pump was stopped.The clinicians commented that the patient went into cardiac arrest while using batteries.Several pump stops had also occurred while using the power module.Log files confirmed one pump stop event while on wall power and two more pump stops while on battery power.In the middle of the night on (b)(6) 2023, the patient experienced a pump stop at home and was transported to a nearby hospital.The patient was in a car driven by their helper when the pump stop occurred.The batteries and power module were exchanged and the pump stops continued.The controller was replaced, but the pump stops occurred again several times.The cause of the pump stop was unknown.The patient was transferred to the implanting center.On arrival to the hospital it was discovered that the patient had developed hypoxic encephalopathy.The log file analysis captured three pump stop events, but there was only 6 hours of data recorded due to the recent controller exchange.The patient never recovered.The patient passed away on (b)(6) 2023.The patient's death was thought to possibly be device related.The device did not operate as expected.Pump mfr # 2916596-2023-01767.Second controller mfr # 2916596-2023-02284.
Additional Manufacturer Narrative
Manufacturer's investigation conclusion: incidental findings: pcb damage.The reported pump stop events can be confirmed.The evaluation of the returned system controller serial number (b)(6) revealed damaged printed circuit board (pcb) components.As a result, the controller was not able to operate a test pump in primary mode when received.The components were replaced, the controller was functionally tested and passed the test.The log file retrieved from the controller revealed that the pump was mostly disconnected and there was a pump disconnected alarm accompanied by speed of 0 rpm.There were two episodes where it appears that the pump was connected; however, the attempts were unsuccessful and the speed fluctuated between 0 rpm and 2310 rpm.There was a significantly increased power recorded during the first attempt (20-27 w) and increased pi values (7.4-9.1).In conclusion, the observed damage to the system controller printed circuit board components and the events captured in the log file appeared to be related to a compromised driveline confirmed during the evaluation of the returned pump.The device history records were reviewed and the records revealed the controller was manufactured in accordance with manufacturing or quality assurance specifications.Patient handbook rev.D, operating manual rev.F covers all alarms (visual and audible) on the system controller and what action should be performed when they do occur.Important warnings relating to pump stops are described in operating manual rev.F.The patient handbook advises the user to call the hospital contact person if there is any questions or concerns regarding the heartmate ii left ventricular assist system (lvas) equipment including the system controller.No further information was provided.The manufacturer is closing the file on this event.

• Brand Name: HEARTMATE II SYSTEM CONTROLLER, US, EP
• Common Device Name: VENTRICULAR (ASSIST) BYPASS
• Manufacturer (Section D): THORATEC CORPORATION; 6035 stoneridge drive; pleasanton CA 94588
• Manufacturer (Section G): THORATEC CORPORATION; 6035 stoneridge drive; pleasanton CA 94588
• Manufacturer Contact: bob fryc ; 6035 stoneridge drive; pleasanton, CA 94588 ; 7818528204
• MDR Report Key: 16872621
• Report Number: 2916596-2023-02283
• Device Sequence Number: 5420488
• Product Code: DSQ
• UDI-Device Identifier: 00813024010630
• UDI-Public: 00813024010630
• Combination Product (Y/N): N
• Initial Reporter Country: JA
• PMA/510(K) Number: P060040
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Other,Foreign,Company Representative,Distributor
• Initial Reporter Occupation: Non-Healthcare Professional
• Type of Report: Initial
• Report Date (Section B): 05/04/2023

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: No
• Is this a Product Problem Report?: Yes
• Operator of Device: Lay User/Patient
• Device Expiration Date: 08/31/2018
• Device Model Number: 103696
• Device Catalogue Number: 103696
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 04/06/2023
• Was the Report Sent to FDA?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 04/13/2023
• Initial Report FDA Received Date: 05/04/2023
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 06/18/2015
• Is the Device Labeled for Single Use? (Y/N): Yes
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: Initial
• Patient Sequence Number: 1
• Patient Age: 71 YR
• Patient Sex: Female
• Patient Weight: 54 KG