The following fields were updated due to additional information: d10: device available for eval yes.D10: returned to manufacturer on: 30-mar-2022.H6: investigation summary: n35j injector andp50j protector received for investigation.Upon visual inspection, no defect was found in the membrane, nor in the injector cannula.No damage observed in the protector.Foreign matter particles were observed inside the syringe that was connected to the injector.Fourier transform infrared spectroscopy was performed to identify the foreign matter.The foreign substance was composed of butyl rubber and silicic acid compounds, usually coming from the rubber stopper of the syringe and also from the phaseal membrane (talcum powder).A device history review was performed for reported lot 2104702, no deviations or non-conformances were identified during the manufacturing process that could have contributed to this reported issue.Fragmentation testing is performed according to procedure, to evaluate any particulates generated by the injector when mated to other components after ten activations.While phaseal needles are designed to reduce coring, there are several factors that may impact coring tendency.Coring from the membrane may occur due to fragmentation caused by multiple injections or excessive welding of the membrane.Coring of the rubber stopper may result depending on the stopper quality, the design and dimensions of the needles used, or if a poor connection of the protector occurs, or if an incorrect stopper is used as in this case.The product undergoes inspections throughout the manufacturing process to ensure the quality and functionality of the device, including verification that all critical dimensions are within specification and that there is no damage to the product.Based on the quality team's investigation, possible root cause is associated with the incorrect use of the rubber stopper corresponding to the cannula type of the protector.
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