The engineering analysis of the luer lock syringe male luer records the brittle characteristics of the breakage suggests that the male luer was weakened most likely due to exposure to chemotherapy drug prior to the breakage.Add'l.Engineering efforts to recreate the male luer breakage with one of the 20ml syringes was performed.A female luer was attached to the end of the bd 20ml syringe and a bending for ce was applied one inch away.It required 19.05 in-1bs of bending torque to separate the male luer from the female luer.The report documents that the separation was ductile where the male luer and thread skirt were bent rather than broken and did not exhibit "brittle" characteristics as seen with the returned devices.Findings: engineering analysis of the "as-received" devices confirmed component breakage of a luer lock syringe male luer inside the female luer of the spiros connector.The engineering analysis of the component breakage characteristics (brittleness) suggests that the mating syringe male luer was chemically weakened prior to the breakage.This condition combined with unintended bending forces most likely contributed to the breakage/damage and resultant leakage that occurred.The complaint investigation report, relevant photographs were provided to the reporting facility for their review, understanding and records.
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