(b)(4).Battery life remaining: <11 months, customer reports: the insulin has not been coming out the way it should for 3 or 4 days.I tried to put in insulin and kept going high because no insulin was going in.I depress 5 units for example, and i hear it turning but nothing comes out.Per visual inspection: no physical damage noted.The in pen paired to the commercial app with small pairing dose.The screw is not bent.The leadscrew advances properly when dosing, however, retracts when dialing doses due to heavy dust / debris under the dose button, on washer, on the dose detent and dose knob.Unable to perform functional test due to screw anomaly.In conclusion: in pen leadscrew retracts when dialing, this will can affect the delivery of insulin.The customer complaint of no delivery of insulin was confirmed due to leadscrew anomaly.
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