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Titan pump, cylinder 1 and cylinder 2, and reservoir were received for evaluation.Abrasion was noted on both exhaust tubes and the inlet tube of the pump.No functional abnormalities were noted with the pump.A separation was noted on the exhaust tubing of cylinder 2 this is a site of leakage.The surfaces appear to have crease marks adjacent to or within a confined area of abrasion, indicating the area was kinked and abrading against itself for an extended period of time.No functional abnormalities were noted with cylinder 1.A separation was noted on the inlet tubing of the reservoir at the strain relief junction.This was a site of leakage.The surfaces appear to be rough and irregular, indicating stress was exerted based on examination of the returned product, it was concluded that the abrasion marks noted on all pump tubing matched in such a way to conclude that they had overlapped and abraded against one another while in-vivo.This then may have caused the exhaust tubing of cylinder 2 to be kinked onto itself for a period of time.This positioning, in combination with device usage over time, could contribute to sufficient stress to separate the exhaust tubing.The rough and irregular surfaces associated with the separation in the inlet tubing of the reservoir indicates sufficient stress may have been exerted to separate the site while in-vivo.Separations of this type could then allow the loss of fluid, making the device inoperable.However, as additional information was not received, it could not be determined if one or all sites were the cause for the reported failure.A review of the device history record confirmed the devices from this lot met all specifications prior to release.A review of the complaint history database, nonconformances and capas revealed no trends for this lot.
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