During self-test, the nanoknife 3.0 generator unit displayed "failed to locate nanoknife controller" error message.The end user had placed the patient under ga prior to turning on the nanoknife generator.Since case was aborted and no treatment provided to patient this event meets the criteria of reportability.The patient did not experience any adverse effects, harm, or require medical intervention because of this incident.
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The unit was returned to alpha source service center for evaluation.Functional check: performed functional test per svc-002-s10 and failed at step 2.3.6 due to an error stating "failed to locate the nanoknife controller", preventing the self-test from completing and reproducing the customer complaint.Fixed by replacing the control card pcb per svc-002-s17.Repeated functional test and passed.Performed electrical safety test per svc-027 and passed.Unit meets all acceptance criteria.The reported complaint description is confirmed.The unit displayed "failed to locate nanoknife controller" when functional tested.The root cause for the self test failure (failed to locate nanoknife controller) was determined to be caused by a faulty controller card, which was replaced.This is the first reported error for this unit for self-test failure.This is the first time the controller card was replaced.The most likely root cause could be wear and tear.After unit had new hard drive installed, the unit was tested per svc-002-s10 functional test and electrical safety test per svc-027 and met all acceptance criteria.Labeling review: per current user manual (b)(4), rev.A (page 18): section 5: system operation 5.1 procedure overview an overview of a typical nanoknife ablation procedure is listed below.Refer to subsequent sections of this user manual for detail usage instruction on operation of the nanoknife generator.5.1.1 procedure setup (before patient enters procedure room): 1.Plug in the nanoknife generator and cardiac gating device into a grounded power outlet within the procedure room.2.Power on the nanoknife generator.The nanoknife generator will initiate and complete a power-on self-test (post).3.Attach the double pedal footswitch to the nanoknife generator.5.1.2 patient preparation 4.Prepare patient for general anesthesia.5.Position patient into appropriate position for anticipated nanoknife single electrode probe insertion (e.G., supine, prone, lateral, lithotomy).A review of the device history records was performed for the reported packaging and component lots for any deviations related to the reported defect of the complaint.The review confirms that the lots met all material, assembly, and performance specifications.Reference (b)(6).
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