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The device history record (dhr) for lot 635759 indicates that there were zero defects found in 544 visual samples and zero defects found in 694 physical samples inspected from the lot.A review of the entire dhr did not identify any manufacturing or inspection anomalies.There were no samples returned with this complaint, but there were samples returned from a related complaint by the same customer.All samples were unopened upon receipt.The needles were evaluated for potentially related defects and no issues were observed.The syringe barrels returned with the similar complaint was not manufactured by medtronic.Those syringes were inspected for damage (cracks, holes and splits) and luer taper, but zero defects were identified.The reported condition could not be confirmed.The exact root cause could not be determined based on available information.A 6m root cause investigation was conducted and reviewed multiple potential contributing factors.The most likely root cause was potentially due to improper assembly by the user.Prior to a lot¿s release, the lot must be deemed acceptable by passing inspections that are based on a valid sampling plan.Inspectors routinely examine a statistical sample both physically and visually.Specifically, samples are inspected for luer taper, hub leakage and damage.The lot met all defined acceptance criteria and was released.The investigation did not identify a systemic issue with the product or process.The investigation identified a most probable root cause that was unrelated to the manufacture of the safety needle.Based on the information available, a corrective and preventive action (capa) is not necessary at this time.It¿s recommended the user consults the instructions for use for guidance when attaching the device.If information is provided in the future, a supplemental report will be issued.
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