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Titan otr pump and cylinders 1 and 2 were received for evaluation.Abrasion was noted on both exhaust tubes and the inlet tube of the pump.A separation, surrounded by abrasion, was noted on the longer exhaust tube of the pump.This is a site of leakage.A failure of the back pressure, inlet valve and deflate valve tests were noted with the pump as the balls in the pump failed to seat properly.It was determined that foreign material was noted in the spring/ball and seat component of the pump.Abrasion was noted on the exhaust tube of cylinder 2.No functional abnormalities were noted with either cylinder 1 or cylinder 2.Based on examination of the returned product, it was concluded that while in-vivo both the exhaust tubes and inlet tube of the pump had overlapped and abraded against one another.This positioning, in combination with device usage over time, could contribute to sufficient stress to separate the longer exhaust tubing of the pump.A separation of this type could then allow the loss of fluid, making the device inoperable.Review of the returned pump was conducted.During this review, it was concluded that the foreign material noted in the spring/ball and seat component of the pump resulted in the failure of the back pressure, inlet valve and deflate valve tests.Because these components were released according to manufacturing and quality control procedures, it was concluded that the foreign material observed most likely entered the system after the device packaging was opened.Failure of this test was not associated with the cause of the reported device malfunction.A review of the device history record confirmed the devices from this lot met all specifications prior to release.No trends were noted for complaints and there were no nonconforming reports or capas that were confirmed to be associated.
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