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Manufacturer's investigation conclusion: evaluation of the returned unlock tool confirmed the reported tool handle separation.A manufacturing analysis task was initiated to address tool handle separation during implant procedure.The issue was determined to be related to the tool supplier, and a quality alert was extended to the supplier to notify them of the observed issue.A further root cause for the observed issue could not be conclusively determined through the supplier's analysis.Abbott in-process dhr review: the lot number of the heartmate 3 lvas surgical hand tool was not provided.However, part number 10001795 went into 5 assembly (10002222int) lots within the date range for when the customer received the part (12oct2015 ¿ 03mar2017).The 5 assembly lot numbers are 162138, 162141, 163416, 182030, and 182768.Ppe is unable to conclusively determine which customer order/date is applicable to this part.The device history record (dhr) was reviewed for these 5 assembly lots.All manufacturing and inspection procedures for the unit were completed and passed.Abbott receiving inspection dhr review: the device history record (dhr) was reviewed for lot 20154858.Per dhr review the hm3, surgical tools, unlock tool received under lot 20154858 did pass the inspection performed at abbott incoming inspection.The current revisions of the instructions for use (ifu) and patient handbook can also be found on the electronic ifu (eifu) page of the abbott website.The heartmate iii¿ lvas surgical hand tools ifu, rev.C, is currently available.Section 1 of this ifu explains that the heartmate 3 unlock tool is an optional tool that can be used to open the slide lock mechanism.Section 3 of this ifu instructs to inspect each tool for damage or wear prior to use.Do not use the tool if damage or wear is detected.The surgical procedures section of heartmate 3 left ventricular assist system (lvas) ifu, rev.B, states to use a sterile surgical tool to unlatch the slide lock, if necessary.No further information was provided.The manufacturer is closing the file on this event.
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