The following were reviewed as part of this investigation: patient severity, trend analysis, applicable previous investigation(s), sample (if available), and applicable fmea documents.Based on a review of this information, the following was concluded: the complaint of a detached luer connector was confirmed; however, the root cause was not identified.The product returned for evaluation was one 4fr s/l powermidline midline catheter.Usage residues were observed throughout the sample.The luer adapter was detached from the extension tubing.The extension tubing exhibited multiple regions of curved shape memory along its length.Microscopic inspection of the sample confirmed regions of cured shape memory and material necking along the length of the extension tubing.The product returned for evaluation was one 4fr s/l powermidline midline catheter.Usage residues were observed throughout the sample.The luer adapter was detached from the extension tubing.The extension tubing exhibited multiple regions of curved shape memory along its length.Microscopic inspection of the sample confirmed regions of cured shape memory and material necking along the length of the extension tubing.An attempt to detach the luer connector of a non-complainant device through pulling stress was unsuccessful.The curved shape memory, material necking and tensile weakness were consistent with damaged caused by tensile (pulling) stress; however, the inability to replicate the failure suggested that an additional unidentified factor(s) contributed.Consequently this complaint is confirmed as ¿cause unknown¿ at this time.A lot history review (lhr) of recx3100 showed no other similar product complaint(s) from this lot number.
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