(b)(4).The homechoice device was returned and evaluated by the product analysis lab (pal).A device history record review revealed no issues that could have caused or contributed to the reported issue.An internal/external inspection was performed and did not identify anything related to this return instrument test/evaluation (rite) failure.Electrical testing was performed and the device passed.The fluid volumetric accuracy test that was performed, had failed with the original piston foam.However, when a test article, piston foam, was installed, the device passed the accuracy confirmation testing.The original piston foam was removed and inspection revealed that the piston foam was deteriorated and there was a door piston crack at the rib of the right disposable.The evaluation concluded that the cause of the failed fluid volume accuracy testing was the deteriorated piston foam and door piston.The piston foam and door piston were to be scrapped and the device was sent for servicing.A capa has been opened to address this issue.Should additional relevant information become available, a supplemental report will be submitted.
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