The autopulse (ap) platform was returned to zoll (b)(4) on 01/13/2016 for investigation.The investigation results are as follow: visual results: during the visual inspection physical damage to the top cover was observed.The heat restraint wire was cut, battery lock clip was damaged and the front enclosure was cracked.Archive data results: during the review of the archive data several user advisory (ua) 45 (not at "home" position after power-on/restart) were observed on (b)(6) 2015, (b)(6) 2016.Ua 45 is related to the lifeband not being able to retract, thus confirming the reported complaint.Functional testing results: during functional testing the platform was ran for 10 minutes using lrtf (large resuscitation test fixture, equivalent to 250 pound patient) with no issue.The ap platform passed functional test after the drive shaft was rotated back to the home position.When the drive shaft is not in home position it will prevent the lifeband from retracting, thus confirming the reported complaint.Based on the investigation the top cover, bent battery lock clip, and damaged front enclosure were replaced.In summary: the reported complaint of "rattling noises" was due to a broken piece of the plastic top cover loose inside the autopulse.The autopulse top cover had several cracks characteristic of excessive force or impact applied during handling.The ua 45 safety alert was reproduced during testing and resulted from the encoder drive shaft not being rotated back to the home position.The autopulse platform was repaired and passed final testing.The autopulse instructions for use (ifu) instructs the user to ensure that the lifeband is in the home position prior to removal to avoid ua 45.
|