The following field was updated due to corrected information: b.5.Describe event or problem: it was reported that syringe 1ml ls sp120 had foreign matter and scale marking issues.The following information was provided by the initial reporter: this is a report about the following issues of syringe.The customer uses this product for covid vaccination.Fm: dirt was found on the product.Scale marking issue: the scale was partially missing/illegible.The following fields were updated due to additional information: d.9.Device available for eval?: yes d.9.Returned to manufacturer on: 9/7/2021 h.6.Investigation: two syringes received for investigation, defective devices are 1ml syringe with reference 303172 and lot number unknown.The lot number is unknown, therefore device history record review (dhr) or quality notification review (qn) could not be performed.Upon visual inspection of the syringes two defects can be observed.One syringe has black foreign matter embedded in the plunger.This is embedded burnt material from molding process.This defect appeared due to the injection of burnt material generated during molding process.Before the injection machine is restarted up it is purged until the material is acceptable rejecting the first pieces.Injection machines are periodically subjected to maintenance and cleaning program.The second defect observed is the lack of a marking line in the second device provided, the 0,3 line is missing.This defect has been produced because the ink was not correctly transferred to the barrel due to a failure in the patters that transfers the scale or in the flaming system that prepare material for ink penetration previously to ink transference.Marking is legible.Possible root cause of foreign matter is associated with the injection of burnt material.Possible root cause for scale marking issue is associated to a failure in the patterns that transfers the scale.Based on the investigation results, no manufacturing related defects could be identified for connectivity issue, and air bubbles, therefore, a cause for the reported incident could not be determined.
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