The reported event was confirmed, however, the cause is unknown.Visual evaluation of the returned sample noted one opened (without original packaging), used (note yellow staining in tube) silicone foley catheter, medline drain bag and connected inlet tube and sample port connector (non-bard) in addition to 2 unopened catheters in original packaging (with matching lot numbers).Visual inspection of the sample noted that the opened silicone foley catheter had a prominent ridge in the catheter balloon (see original complaint).This is out of specification per inspection procedure which states, "balloon must not cuff after deflation." the catheters were removed from their sample port connector/packaging and the inner diameter of the drainage funnel end was measured for each.The inner diameter of the used catheter drainage funnel end was 0.3645 inches, and the inner diameter of the unused catheters at the drainage funnel ends were 0.3625 inches each.These values are within specification.Although the reported event was confirmed, the root cause could not be determined.A potential root cause for this failure could be, ¿balloon material does not shrink quickly enough." the device history record was reviewed and found nothing that could have caused or contributed to the reported event.The instructions for use were found adequate and state the following: "to deflate catheter balloon: gently insert a syringe in the catheter valve.Never use more force than is required to make the syringe "stick" in the valve.If you notice slow or no deflation, re-seat the syringe gently.Allow the balloon to deflate slowly on its own.Do not aspirate or manually accelerate the deflation of the balloon.If permitted by hospital protocol, the valve arm may be severed.If this fails, contact adequately trained professional for assistance, as directed by hospital protocol.Should balloon rupture occur, care should be taken to assure that all the balloon fragments have been removed.Visually inspect the product for any imperfections or surface deterioration prior to use." correction: d4.H11:section a through f - the information provided by bd represents all of the known information at this time.Despite good faith efforts to obtain additional information, the complainant / reporter was unable or unwilling to provide any further patient, product, or procedural details to bd.
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