The device history record review could not be performed since no lot number was provided from customer complaint report, and no photo sample/actual sample with an identifiable lot number was received.The complaint report indicates that no sample is available in connection with this complaint report however, two photographs were submitted for review and investigation.After a visual inspection of the photos, it appears that there is a knot in the catheter.A gemba walk through was conducted in the manufacturing area with the multifunctional team (quality, manufacturing, engineering); it was determined that the potential root cause could not have happened in the manufacturing floor as there is no step in the manufacturing process in which the product is handled to the point of knotting the device.A visual inspection is performed before the release of the product with acceptable results.Based on the analysis, the observed occurrence of harm improbable which is below the range of the expected occurrence rate therefore corrective actions are not deemed necessary at this time.
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