840sevice教学资料 THEORY7.PPTVIP

840 Theory of Operation Integration 840 Theory of Operation Integration Coordinate the operation of the ventilator Inspiration Exhalation Occlusion detection SVO and Occlusion Status Cycling 840 Theory of Operation Integration Operator programs ventilator (GUI) Ideal Body Weight Mode and sub-mode Parameters Alarm thresholds Entries made available to BDU CPU Display settings 840 Theory of Operation Integration These entries are used to create targets for breath control and alarm triggers (BDU CPU) Ideal Body Weight selection determines mid range selection of breath parameters and alarm settings Mode determines breath type(s) available (mandatory and/or spontaneous) and sub-mode determines volume or pressure control of mandatory breaths and if spontaneous breaths are Pressure Supported Parameters determine the physical limits of the breath Alarm settings monitor for safe ventilator operation and patient performance 840 Theory of Operation Integration The GUI CPU communicates the operator entered information to the BDU CPU Data is stored with both CPU PCBs The BDU CPU converts the entries into targets to create a breath and monitor performance of ventilator and patient BDU coordinates timing of breath delivery and monitoring activities 840 Theory of Operation Integration BDU CPU delivers performance data to GUI for display GUI CPU displays performance data and detects and announces ventilation alarm events BDU monitors GUI performance and has a backup alarm system 840 Theory of Operation Integration BDU/GUI CPUs monitor communication BDU CPU/AI PCBs (analog signals are coordinated through Analog Interface PCB) monitor operation of Breath Delivery Unit, Compressor Module, Patient Circuit, and Backup Power Supply GUI CPU monitors Graphical User Interface operation 840 Theory of Operation Integration Signals read by AI PCB Signals sent from and monitored by AI PCB 840 Theory of Operation Integration Inspiration Exhalation Occlusion Detection Occlusion Status C