A review of the device history record was unable to be performed without a lot number.The method of root cause analysis that was implemented in this investigation was to conduct a process walk through while performing a six massessment to identify areas where liquid is introduced into the manufacturing process that could make its way inside the molded sleeve.The assessment evaluated potential causes: man, material, method, measurement, machine, and mother nature (environment).The significant causes are noted and addressed in the corrective and preventative action section as appropriate.The most probable root cause is insufficient mixing of vesta syde sq disinfectant and operator training for controlled manufacturing cleanliness.It is not clear from the information provided if the syringe was re-used.As indicated on the instructions for use provided, it is advised that syringes not be used if opened or damaged.A tamper evident seal is provided to determine if the syringe has been opened.Based on the information available and the investigation findings, a formal investigation is not deemed necessary at this time.A change order was completed to identify which department is responsible for vesta syde sq solution preparation and provide instructions on how to properly mix/dilute the cleaning agent.A training module was assigned to initiate retraining for all affected employees.If information is provided in the future, a supplemental report will be issued.
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