The following fields were updated due to additional information: d10: device available for eval: yes, d10: returned to manufacturer on: 2022-jan-17.Investigation summary: to aid in the investigation of this issue, a picture and a physical sample were returned for evaluation by our quality engineer team.Through examination of the sample, the plunger rod was observed broken and separated from the barrel.A device history record review was completed for provided material number 306573 and lot number 1005958.There were several second samplings performed during the production process due to an issue with plunger rod breakage.However, as the second samplings and inspections were found to have correct results, no quality notifications were opened for the issue.As this incident has occurred, we can determine that although the second samplings were accepted per the acceptance criteria, an isolated sample went to the market.The damaged plunger most likely resulted during the plunger assembly process.If the machine is not well adjusted, the pressure used to assemble the components may cause damage to the plunger rod and the plunger rod can become loose from the barrel after visual inspection.This is a very unusual circumstance.The primary packaging process is inspected on a regular basis under our quality assurance procedures.The assembly machines vision system is also challenged for detection and rejection of plunger rod assembly issues.Based on the preventive measures in place, we believe this was an isolated incident with an unlikely chance of recurrence.
|