A device history record (dhr) review revealed no discrepancies that may have contributed to a complaint of this failure mode.All quality assurance testing performed during manufacturing was acceptable.The quality assurance review of the visual, physical and dimensional evaluation results indicated that the product met specification requirements.In addition, all dhrs are reviewed for accuracy prior to product release.The sample was returned to the manufacturing site for analysis and investigation, it consisted of a palindrome catheter that was received inside a generic plastic bag; the catheter presented signs of use (dirt).Visual inspection was performed and it revealed one pinhole on the venous extension.The extensions did not present other marks.Additionally, the clamps were inspected and as a result defects or irregularities were not identified.An underwater test was performed and bubbles were detected coming out from the venous extension.The defect was not identified prior to insertion; this kind of defect would be detected during leak testing.The manufacturing process was reviewed to determine potential points of damage to the extension.The result was that the operations that are applied to the extension are light and the handling of the pieces is manually done, there is no use of sharp objects or other instrument that could generate the hole found on the sample received, therefore there are no elements encountered during the manufacturing process that could cause the reported condition.As per the instructions for use (ifu), the customer has to perform a visual inspection before using the device.Do not use the catheter if it is crushed, cracked, cut or otherwise damaged.Clamping the catheter repeatedly in the same spot could weaken the tubing.Exercise caution when using sharp instruments near the catheter.Catheter tubing can tear when subjected to excessive force or rough edges.Inspect the catheter frequently for nicks scrapes, or cuts which could impair its performance.Based on the available information and the result of the dhr review that showed no deviations, it can be concluded that product was manufactured according to specifications and the device functioned as intended for the reported amount of time.Moreover, 100% devices are inspected for leaks or cuts in the extensions per procedure.The most probable root cause can be that the defect was more likely caused during use, due to the inappropriate use of sharp objects, repeated clamping or other similar damage.
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It must be noted that in-process controls (such as personnel training, incoming quality acceptance testing for raw material, 100% in process visual inspection, leak testing and visual acceptance sampling) are in place to prevent nonconforming product from leaving the manufacturing operations.As per procedure, manufacturing performs 100% leak testing at the final stage of production, which would identify this issue in the catheter assembly.No additional actions are required.This complaint will be used for tracking and trending purposes.
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