One single-use device was received for evaluation.Visual inspection did not identify any abnormalities that could have contributed to the reported condition.No evidence of "scratches and scribbled" were identified during inspection.A functional leak test was performed by filling the device.During filling, a leak/backflow was observed from the fillport.Further inspection revealed that the cause of the leak/backflow problem was due to two glass fragments approximately 0.20 and 0.25 square mm in size, lodged under the device¿s checkband.The reported leak was verified.The most likely cause of glass fragments becoming lodged under the checkband is user filling technique.A glass ampoule used for filling the device without a filter can result in this type of event.A batch review was conducted and there were no deviations found related to this reported condition during the manufacture of this lot.Should additional relevant information become available, a supplemental report will be submitted.
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