General System Overview Product Description
1 - 2 046-003777-00 A5/A3™ Operating Instructions
1.1 General System Overview
1.1.1 General Description
The A5/A3 Anesthesia System is a device intended to administer, continuously or intermittently, a
general inhalation anesthetic to a patient, and to maintain a patient's ventilation. The A5/A3 also
provides for ventilatory monitoring of the patient. The anesthesia system is intended to be used in
the patient environment.
The A5/A3 Anesthesia System consists of a main unit (includes an anesthetic ventilator and
flowmeter monitor assembly) and a detachable breathing system. The applied part of the anesthesia
system are breathing tubes and masks. Connect the patient to the anesthesia system via breathing
tubes and masks.
The A5 Anesthesia System provides the following ventilation modes:
• Volume Control Ventilation (VCV), which includes the Pressure Limit Ventilation (PLV) function
• Pressure Control Ventilation (PCV) with/without Volume Guarantee (VG) ventilation mode
• Synchronized Intermittent Mandatory Ventilation (SIMV) with VC mode
(with/without PS option)
• Synchronized Intermittent Mandatory Ventilation (SIMV) with PC mode
(with/without PS option)
• Pressure Support (PS) ventilation mode
• Spontaneous ventilation in Manual mode with APL fully open
• Manual Ventilation through the use of a breathing bag
• Cardiac Bypass mode
•Monitor Mode
The A3 Anesthesia System provides the following ventilation modes:
• Volume Control Ventilation (VCV), which includes the Pressure Limit Ventilation (PLV) function
• Pressure Control Ventilation (PCV)
• Synchronized Intermittent Mandatory Ventilation (SIMV) with VC mode
(with/without PS option)
• Pressure Support (PS) ventilation mode
• Spontaneous ventilation in Manual mode with APL fully open
• Manual Ventilation through the use of a breathing bag
Electronic PEEP is available in all automatic ventilation modes. User control of the inspiratory flow rise
(Tslope) is possible in PCV, SIMV, and PS modes. Automatic fresh gas compensation limits the effect
on the patient ventilation from changes in fresh gas flow rate by the operator. The traditional bellows
system is driven by oxygen and makes patient disconnections clearly visible.
The A5/A3 Anesthesia System provides the following common functions:
• Automatic leak detection
• Circuit gas leakage compensation and automatic compliance compensation
• Cylinder and central pipeline gas supply connections available for gas input
• Electronically displayed flowmeter and electronically adjustable PEEP
• Electronic timer to display the duration between the start and end of an operation
• Work table light
• Mounting rails to connect an external patient monitor
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