Pma / 510(k) #: there is no 510(k) for this device as it is manufactured outside the us and not sold in the us.Investigation summary: a device history record review was performed for provided lot number 9163585 and the review did not reveal any detected quality issues during the production process that could have contributed to this reported incident.To further investigate this issue, one picture sample was provided for evaluation by our quality engineer team.Through examination of the picture, the lot number was observed illegible on the product packaging.During the label printing process, the print may drift outside of the designated print window.An adjustment has been made to the printing machine to bring it back into alignment.Any affected product should have been detected by the vision inspection system and contained prior to release, however, an error in the vision system occurred.A new vision system has been installed and validated to inspect 100% of variable printing issues.Our quality team will continue to monitor the production process for signs of this defect and other emerging trends.Investigation conclusion: batch code: 9163585.The non-conformance's were reviewed for this batch, and there was no record of non-conformance associated with this complaint.Conclusion(s): the returned photo confirmed illegible batch number print.Based on the investigation, the root cause of this defect may be related to an issue with the vision system on the machine.The print can drift in the variable print window area.In this occurrence it drifted outside the variable print window and impinged on the fixed pre-printed graphics.An adjustment was made to the machine at the time of occurrence to bring it back into alignment, however, not all affected product was sufficiently contained.A new vision system subsequently installed and validated which 100% inspects for variable print and this issue has not occurred since.Root cause description: based on the investigation, the root cause of this defect may be related to an issue with the vision system on the machine.
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