The primary complaint was confirmed during archive review.The root cause of the issue at the time of the event was due to a low remain capacity battery that was used (in the autopulse platform) to compress a large/stiff patient.Visual inspection was performed and found damage to the top and front cover and a bent battery lock.During archive data review, it revealed that the autopulse lithium ion battery (s/n: (b)(4)) was used on december 19 (the presumed event date).The archive data noted that the battery contained 834 mah (milli amp hours); equivalent to about two green led's.At the time of the event, the platform was used to perform 145 compressions for approximately one minute and fifty seconds on a large difficult to compress patient (max load sum exceeded 329 lbs.).The archive data recorded that the autopulse platform stopped compressing due to multiple user advisory 19 (max applied load exceeded) error messages.The overload circuit trips when load cell force exceeds maximum applied force.Functional testing was performed using a large resuscitation test fixture (lrtf) with good known reference test batteries.No issues/faults occurred.Further evaluation also confirmed that both load cell modules are functioning within the specification.The autopulse platform is a reusable device and was manufactured on 09/14/2007.Device history record (dhr) was reviewed for service information related to the reported complaint and there was no previous history of complaint reported for autopulse with serial number (b)(4).The autopulse platform passed all the testing and meets all required specifications.
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During patient use, it was reported that the autopulse platform (s/n: (b)(4)) provided between 2 to 20 compression, then either stopped or powered off completely.Despite restarting the platform, the issue did not resolve.According to the reporter, following the issue the emergency responding team reverted to manual cpr without incident.Contact at marion county was not available for additional information.No known consequence to the patient was reported.
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