The report of an occlusion - no alarm (infiltration) was not confirmed.Review of the pump module¿s event log for (b)(6) 2019 13:53 to 14:40 identified that the air-in-line alarm was set to 75ul, the occlusion alarm was set to 450mmhg and the occlusion restart attempts was set to 1.Analysis of the pcu event log identified the following sequence of events having occurred on (b)(6) 2019: at 13:53 pcu powered on with pump module (b)(6) attached.At 13:54 basic infusion started at 150.0ml/h with a vtbi of 48.0ml (vi = 0.0ml).At 14:13 a vtbi of 48.0ml was entered (vi = 47.004ml).At 14:32 pump alarmed vtbi completed and kvo started (vi = 95.025ml).At 14:35 an infusion was started at 700.0ml/h with a vtbi of 480.0ml (95.029ml).At 14:40 pump performed an auto restart.At 14:40 pump alarmed partial patient side occlusion (vi = 155.75ml).At 14:40 channel off.At 14:40:39 pcu powered off part of the alaris system¿s downstream occlusion detection system is designed to minimize nuisance, patient-side occlusion alarms.It allows the system to automatically continue an infusion following detection of a patient-side occlusion if downstream pressure falls to an unacceptable level within a 15 second ¿checking line¿ period.If this feature is enabled, ¿checking line¿ function occurs when downstream pressure exceeds pressure limit.In selectable pressure mode: pressure limit is either user-adjustable or ¿locked¿ in system configuration.In pump pressure mode: pressure limit is a function of flow rate and is automatically determined by device.If downstream pressure decreases to a predetermined level, (below 50% of pressure limit) during 15 second ¿checking line¿ period, the infusion automatically continues.If the condition is not cleared within 15 seconds, a ¿partial occlusion ¿ patient-side¿ alarm occurs.Using editor software, the system can be configured to allow 0 (zero) to 9 restart attempts within a rolling 10 minute period.If allowable number of restarts is exceeded or if the feature is set to zero, an ¿occluded ¿ patient-side¿ alarm occurs when the system detects downstream pressure that exceeds pressure limit.The root cause of the reported no alarm was not identified.Pump is neither designed nor intended to detect infiltrations and does not alarm under infiltration conditions.Device history review: the device history record was reviewed at the manufacturing facility, and it did not show any manufacturing issues during production build for the pcu or pump module.H3 other text : no devices received, log review only.
|