Investigation: bd has reviewed our production and inspection records and have established that all production and quality processes were carried out normally.Neither qn nor ncmr's.Bd has been provided with the affected sample.The leakage test performed on the sample reveal no defect.In addition, no defect in the syringe tip or in the hub of the needle was observed after the evaluation.The scale marking of the returned syringe was correct, and no breakage was observed.After the evaluation of the received sample, bd could not determine the exact root cause of the reported issue.Bd believes the cause of the problem could be produced because of a damage in the plunger lip.This could be produced during the handling of the product through the manufacturing process or in the plunger assembly machine.Bd has tested the provided sample tip with a gauge and the dimensions were correct in this case.Bd has also carried out a leakage test to check the possible of air loss due to a bad connection and it has proved to be correct too.Based on the nonconformance description, bd believes the issue could be related with some ineffective luer slip fitting between the device and the syringe tip.The exactly root cause for this issue is not possible to be determinate.The process bd uses to print the scale is called "hot stamping system".A metal stamp is heated at around 100ºc.Between the stamp and the barrel, bd interposes a special black printing foil.By pressure, the stamp pushes the printing foil and its component is embedded in the barrel wall.The result is a black scale printed on the barrel of the syringe.Based on the customer feedback, the reported issue could happened at the end of this process, due to a defective foil reel.In this case the foil did not work as expected, and the scale was not printed correctly.The material used to manufacture discardit syringes has been selected and tested to resist normal conditions of use.The assembling machines have an on-line detection system that inspects 100 % the syringes, rejecting automatically the syringes with broken parts.Based on this fact, bd believes that the syringe tip could break because of any imperceptible damage in the barrel at the moment of the use or some strong condition during handling or use of the product.
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