H10: one used and two new list# sn1009 sets were returned on (b)(6)2020 for investigation and visually inspected.As received, the one (1) used set was found with the injection port septum separated from the port.A needle puncture was identified on the silicone septum.(b)(4) of the(b)(4) returned sn1009 sets (one (1) new and one (1) used), were confirmed to have an inadequate injection port stakes which resulted (or could result) in the septum becoming dislodged when the injection port is access with a needle.The probable cause is an inadequate injection port stake during manual assembly.A device history review (dhr) lot# 4332813 and relevant commodities were reviewed, and no non-conformances were found that would have contributed to the reported complaint.
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