(b)(4).Device history records (dhr): reviewed device history records, there is no abnormalities and no such defect detected at final control inspection.Sample evaluation: received one used, empty easypump ii lt 270-27-s (batch no.Labeled (b)(4) /material no.4540008 on the big bottom cap of the sample).Examined the returned sample visually.Clamp clip was clamped.Patient connector (distal end) was not closed with the original closing cone (distal end cap), it was closed with a red stopcock.Filling cap (discofix) was attached with filling port.Sample was filled with normal saline solution to nominal volume 270 ml.The complaint sample was unclamped to prime the tubing and observed the pump did work after 30 minutes (solution was running).The definite cause and flow rate for the used sample will be comprehended in detail at production.Therefore, sample will forward to production for further investigation.A follow-up report will be provided after the inspection results are available.
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(b)(4).We received the following information after investigation at our manufacturing department: the flow rate test was passed at -13.76% deviation from nominal flow rate, which is within the spec of ±15%.However, flow rate deviation is a known error pattern and corrective and preventive actions are in progress / have been implemented.
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