(b)(4).Additional information: upon visual inspection, it was noted that the balloon was discolored in the center of the band fold.The discoloration was of a dark brown color.The port was encrusted on front and back with biological tissue.Leak test performed - device failed.A small leak exists at the second point of reference, the balloon closed end, extender side.The leak appears to be along where the glue attaches the balloon to the silicone band.Biological debris prohibiting locking and unlocking of the device.The port was disconnected from the catheter / locking connector and immersed in koh solution for 24 hours.Post treatment of koh solution, the port deploys from locked to unlocked position without any resistance.The port is fully functional.Some damage is evident on the face of the port.This may be due to a device used to grab the port or possibly derived from the use with the port applier.The complaint cannot be confirmed as no specifics of the complaint have been communicated other than the band was removed 'due to complications from the gastric band procedure'.No information regarding implant date has been conferred therefore we cannot know if this leakage is due to wear and tear.It is not possible to draw conclusion as to the root cause.There are many possibilities for root cause, for example device wear and tear, potential band defect or user mishandling.A device history record (dhr) review was performed, and no discrepancies were recorded during the manufacturing process.Manufacturing practices were reviewed also with respect to testing of the swedish adjustable gastric band (sagb) prior release.It was noted that 100% of all devices are leak tested.This is therefore unlikely to be a manufacturing issue.
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