The reported event is inconclusive because no sample was returned.A potential root cause for this event could be, "poor balloon design".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: "preparation of the catheter all x-force® nephrostomy balloon dilation catheters contain air in the balloon lumen.The air must be removed to allow liquid to fill the balloon when it is inflated.1.Remove the protective sheath from the balloon.2.Attach the inflation device to the connector on the balloon lumen.3.Open the stopcock, and draw back on the inflation device to remove the air from the balloon catheter 4.Close the stopcock, remove the inflation device, depress the plunger to remove any air and reattach to the balloon catheter.5.Repeat steps 3-4 until all air is removed from the balloon lumen." "inflating the balloon catheter 1.Fill the inflation device (eagle¿ inflation device) with sterile, liquid media.2.Attach the inflation device to the balloon lumen.3.Open the stopcock and inflate the balloon.4.Once dilation has been attained, advance the sheath over the balloon." the device was not returned.
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