The autopulse platform (s/n (b)(4)) was returned to zoll on 12/07/2015.Investigation results as follows: visual inspection of the returned platform was performed and found no damages on the autopulse platform.A review of the archive showed user advisor 17 (max motor on time exceeded) had occurred on (b)(6) 2015 and ua 7 (discrepancy between load 1 and load 2 too large) had occurred on (b)(6) 2015 thus confirming the reported complaint.The platform was functional tested and found that one of the load cells was at fault.The load cell was replaced to remedy the user advisories.The platform than passed a 17 minutes run-in test with a 95% patient test fixture (lrtf).Based on the investigation, one of the load cell was replaced to remedy the reported user advisories.In summary the customer's reported complaint that the platform prompted ua 7 and ua 17 was confirmed during archive review.The root cause for the ua 7 and ua 17 was a defective load cell.The user advisories are designed into the autopulse platform.Ua 2 alerts the user that a misalignment or inappropriate movement of the patient or the lifeband has occurred.This condition is typically correctable by the operator.Ua 17 alerts the user that there is hardware or software issues or the load cells are damaged.The platform passed all initial and final functional testing criteria.
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