Investigation ¿ evaluation: a review of visual inspection, specifications and quality control data was conducted during the investigation.One complaint device was returned for evaluation.Device evaluation revealed attached customer valve does not have a shut off which allows fluid to flow from drainage bag to balloon and vice versa.There is no indication that a design or process related failure mode contributed to this event.Review of production and quality documentation did not observe any specific issues with current manufacturing or quality controls that may have contributed to this incident.Based on the provided information and evaluation of the returned device, a definitive root cause cannot be established or reported at this time.Per the quality engineering risk assessment, no further action is required.Cook medical has notified the appropriate personnel and will continue to monitor this device via the complaints database for similar complaints.
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