(b)(4).Udi # unknown.Method: the actual device was not returned.A review of the device history record (dhr) was not performed as no lot number was provided.Results: as the device was unavailable for analysis, no methods were performed.Therefore, results cannot be obtained.Conclusions: the device was not returned to halyard for evaluation therefore, we are unable to determine the cause for the reported event.Per the instructions for use (ifu) there are several factors that may affect the flow rate including fill volume, temperature, viscosity of the drug solution, pump position, storage time and external pressure.Halyard health has no independent knowledge of the event reported but is relaying the information that was provided by the user facility where the incident occurred.(b)(4).Device not returned.
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