Datex-Ohmeda 7100 Technical Reference Manual

Contents

Datex-Ohmeda 7100 Technical Reference Manual Manual pdf 18 page image

7100 Anesthesia Ventilator2-4 02/03 1006-0836-0002.2 7100 ventilator features• Sensors in the breathing circuit are used to control and monitorpatient ventilation and measure inspired oxygen concentration. Thislets the ventilator compensate for compression losses, fresh gascontribution, valve and regulator drift and small leakages in thebreathing absorber, bellows and system.• Positive End Expiratory Pressure (PEEP) is generatedelectronically. PEEP is not active when mechanical ventilation isoff.• User settings and microprocessor calculations control breathingpatterns. User interface settings are kept in non-volatile memory.• Mechanical ventilation is started with the Bag/Vent switch on thebreathing system.• The 7100 ventilator reads the status of the Bag/Vent switch and thebreathing circuit type (Circle, Bain — Aestiva only). The operatordoes not have to set the breathing circuit type from a menu.• The 7100 ventilator has an operator-selectable Heliox mode(Aestiva only) to permit gas composition compensation whenHeliox gas is used.• The 7100 ventilator has minimum monitoring and alarmsmanaged on the ventilator panel (there is no other panel for safetyrelevant alarm management, etc.).• Ventilator hardware is regularly monitored by software tests.• An RS-232 serial digital communications port connects to andcommunicates with external devices.• An exhalation valve modulates flow in the pressure mode.• Pressure and volume modes are selectable by the operator.• All pneumatic components are located on one manifold.• Exhausted drive gas and bellows pressure relief valve gases aremixed and go through the ventilator exhalation valve.• The exhalation valve block is autoclavable.• Excess fresh gas released from the bellows and ventilator drive gasare transferred from the exhalation valve to the Anesthesia GasScavenging System (AGSS).• Optimized for service with a low number of components.2.2.1 Safety features • Dual redundant airway overpressure protection, linked to Plimitsetting.• Volume over-delivery limits and protection.• Proprietary hose connections and fixed manifolds.• Proven mechanical components used.• 10 VA electrical power limiting to potential oxygen enrichedenvironment.• 150 psi burst overpressure protection.