One sample unit was received for evaluation by our quality engineer team.Upon visual inspection of the sample, the expansion chamber was observed damaged.The film of the expansion chamber was broken, therefore, the expansion chamber could not inflate properly.A device history record review did not reveal any documented quality issues during the production of lot number 1604017 that could have contributed to the reported/observed defect.A station within the assembly machine is designed to detect damaged expansion chamber film.If detected, the product in question would have been rejected.Although an exact cause cannot be determined, it does not appear likely that the defect occurred during the manufacturing process.Investigation conclusion: the report confirms that the expansion chamber is broken: there is no evidence on the dhr about any problem during the manufacturing process (no non-conformances, no maintenance interventions).On the other hand, the p3 assembly machine can detect if the film is broken (station #19).In this case, the piece would be rejected.Based on this, it doesn¿t seem likely that the defect have taken place during manufacturing process.The root cause cannot be determined.
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