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Investigation summary: no samples or photos were provided by the customer for investigation.Complaints received for this device and reported condition will continue to be tracked and trended.Information will be captured on trend reports and monitored monthly.Our business team regularly reviews the collected data for identification of emerging trends.A device history record review was completed with zero defects found.No quality notifications were written for this batch, nor for the associated assembly batches.Investigation conclusion: a complaint history check was performed and this is the 1st related complaint reported with the defect/condition of plunger rod broken / damaged for lot #8360699 item #302836.A device history record (dhr) review was performed on the batch associated with this investigation.The dhr reviews did not reveal any defects or issues reported and no quality notifications were issued.Root cause description: while a definitive root cause could not be determined, plunger rods are fed through a chute to the assembly process.If the chute is empty, the plunger rods can experience excessive force when falling through the entire chute causing damage to the ribs.A sensor was installed on the chute to determine if the chute is empty.When the chute is full, the plunger rods do not slide the entire length of the chute and have a reduced risk of damage.The sensor will not allow plunger rods to automatically feed into the chute unless it is full which reduces the risk of damage.Rationale: a sensor was installed on the chute to determine if the chute is empty.When the chute is full, the plunger rods do not slide the entire length of the chute and have a reduced risk of damage.The sensor will not allow plunger rods to automatically feed into the chute unless it is full which reduces the risk of damage.Based on the investigation conclusion and without a sample to analyze, the condition reported by the customer could not be confirmed.Therefore, no corrective or preventative actions are proposed in the scope of this complaint.
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