(b)(4): hospital sent pace 203h external pacemaker back to manufacturer for service with the statement: 'device failed functional & safety test.Device does not generate stimulation pulse.' upon the receipt on (b)(4) 2014 the pacemaker was subject to short and long term testing (72 h in climate chamber, 24 h monitoring of stimulation pulses).The device appeared to be functional.The error could not be reproduced.On (b)(6) 2014 we contacted the biomedical department and inquired for more information.Apparently the pace 203h was used on a patient who was on an external heart-/lung- support system and monitored.An alarm indicated a dysfunction of pace 203h showing an error code which was not remembered any more.Pace 203h was replaced by another external pacemaker.No injury caused by or related to the dysfunction of pace 203h was reported.
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