(b)(4).The lot 14f055 was manufactured on june 27, 2014 to june 28, 2014.A review of all batch record documents was performed with no issues noted during the manufacturing process.One actual unit was received at the plant for evaluation.The unit was returned with approximately 100 ml of fluid in its bladder.A visual inspection on the unit (via the naked eye) revealed evidence of leak (backflow) at the fill-port when the fill-port cap was removed.Further visual inspection on the unit revealed the direct cause of the leak (backflow) problem was due to a particle approximately 0.60 mm in size, trapped under the check-band.The particle was identified to be acrylic material via fourier transform infrared spectroscopy (ftir)scanning.A capa was opened for further investigation.Should additional relevant information become available, a supplemental report will be submitted.
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