The complaint was forwarded to our parent company in germany for their evaluation.The investigation summary is as follows: we received the proximal part of the catheter which snapped just at the junction of the catheter and extension line.The part of the tube that detached was not returned.Microscopic examination of the breakage area showed the typical rough and jagged surface for a tensile breakage.From previous complaints we know different causes of tensile fracture can be: dressing change- in some instances the catheter can become adhered to the dressing and additional pulling is required to free it, placing stress on the line which results in a fracture.Routine care- such as when lifting the baby to change bedding, movement, the baby themselves catching the line (normally with a foot) disinfectants- it is essential to let disinfectants dry completely before the catheter is placed, as alcohol or organic solvents can damage the catheter material.Having checked batch history records, no abnormalities were found during the manufacturing run.Each catheter is flow and leak tested during production and the tensile force of the catheter component is randomly checked.Visual tests and incoming goods inspections are carried out.The tensile force of the catheter and extension line for the involved batch was between 3.33n and 5.51n and therefore within specification (1.5n).This is the second complaint for batch number 8023304 and the second complaint regarding a snapped catheter on code (b)(4).No further corrective action will be initiated by quality management at this time as manufacturing fault cannot be concluded.As the catheter worked well for 3 weeks, we do not believe this was caused by manufacturing.Vygon will continue to monitor for this issue.
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