zeus_ie_technical_documentation_ipm_rev_8-0.pdf
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Technical Documentation IPM
Zeus IE
Anesthesia Workstation System
Warning
All servicing and/or test procedures on the
device require detailed knowledge of this
documentation. Use of the device requires
detailed knowledge and observance of the
relevant Instructions for Use.
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Table of contents
Table of contents
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General
1 General notes ...........................................................................................................................
Abbreviations
1 Abbreviations and definitions....................................................................................................
Function descriptions
1 Block diagrams – Zeus IE.........................................................................................................
2 Operator control unit - monitor C500 ........................................................................................
3 Shutdown response of the Zeus IE ..........................................................................................
4 Anaesthetic gas box .................................................................................................................
5 Pipeline supply module.............................................................................................................
6 Power supply unit .....................................................................................................................
7 PCB box ...................................................................................................................................
8 Dirona PCB...............................................................................................................................
9 Nina PCB..................................................................................................................................
10 Zeus gas analyzer 2.1 (GMZ 2.1) .............................................................................................
11 "WaterLock 2" water trap ..........................................................................................................
12 System Gas Analyzer (SGA) ....................................................................................................
13 Patient gas analyzer (PGA) ......................................................................................................
14 Blower Unit ...............................................................................................................................
15 Breathing system ......................................................................................................................
16 DIVA anaesthetic dosing unit ...................................................................................................
17 Apollo........................................................................................................................................
Annex
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General
This chapter contains general notes and definitions that are important for the
use of this documentation.
General notes ...........................................................................................................................
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General
General notes
1
General notes
1.1
Notes on use
Read through the following notes thoroughly before applying this
documentation.
Dräger reserves the right to make changes to the device and/or to this
documentation without prior notice. This documentation is intended solely as
an information resource for maintenance personnel or technical specialists.
1.2
Copyright and other protected rights
The content of this documentation, in particular its design, text, software,
technical drawings, configurations, graphics, images, data and their selection
and its composition and any amendments to it (content) are protected by
copyright. The content must not (in whole or in part) be modified, copied,
distributed, reproduced, republished, displayed, transmitted or sold without
the prior written consent of Dräger.
1.3
Definitions
WARNING
An important advisory indicating a potentially hazardous situation
which may result in death or serious injury if not prevented.
CAUTION
An important advisory indicating a potentially hazardous situation which may
result in minor or moderate injury to the user or patient or in damage to the
medical product or other assets if not prevented.
NOTE
A NOTE provides additional information intended to avoid inconvenience
during operation and/or servicing.
Term
Maintenance
Maintaining the operative condition of a medical product
by suitable means
Inspection
Assessment of the actual condition of a medical product
Servicing
Maintaining the operative condition of a medical product
by recurrent, specified measures
Repair
Restoring the operative condition of a medical product
after failure of a device function
General safety precautions
Read through each section thoroughly before beginning servicing. Always
use the correct tools and the specified test equipment. Otherwise the device
may not work correctly or may be damaged.
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1.4
Definition
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General
General notes
WARNING
The device must be regularly inspected and serviced by maintenance
personnel. Repairs and complex maintenance work on the medical
product must be carried out by qualified specialists.
If you require a service contract, or for any necessary repair work,
Dräger recommends DrägerService. Dräger recommends using
original Dräger parts for servicing.
If the aforementioned instructions and recommendations are ignored,
the correct functioning of the medical product may be put at risk. Pay
attention to the "Servicing" section of the Instructions for Use.
WARNING
Non-conforming test values
If test values do not conform to specifications, the safety of the patient
may be put at risk.
–
Do not put the device into operation if test values do not conform to
specifications.
–
Contact your local service organization.
WARNING
Impermissible modifications to the device
If impermissible modifications are made to the device, the safety of the
patient may be put at risk.
Do not modify the device without Dräger's permission.
WARNING
Risk of infection
The unit may transmit pathogens following use on the patient.
–
Before carrying out any servicing, ensure that the device and its
components have been handed over by the user cleaned and
disinfected.
–
Service only cleaned and disinfected units and unit components.
WARNING
Risk to patient.
Ensure that no patient is connected to the device before starting
maintenance or repair work.
NOTE
No.2201_0000005424-001
Where reference is made to legislation, regulations and standards, in
respect of devices used and serviced in Germany they are based on the
laws of Germany. Users and technicians in other countries must comply with
their national laws and/or international standards.
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General
General notes
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Abbreviations
This section contains a list of the abbreviations used in this document.
Abbreviations and definitions....................................................................................................
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Abbreviations
Abbreviations and definitions
10
Abbreviations and definitions
A-Box
Anaesthetic gas box
APL
Adjustable Pressure Limit
C 500
Display and operating unit (processor unit) of Zeus IE
CAN
Controller Area Network
CPCI
Compact Peripheral Component Interconnect
DAGMAR
Digital Advanced Gas Mixer for Anesthesia Requirements
DIANA
Digital anaesthesia controller in A-Box
DIVA
Digital Injection of Volatile Agent
DUMA
Flowmeter for volatile anesthetic
DVI
Digital Video Interface
EEPROM
Electrically Eraseable Programmable Read Only
Memory
Flash-ROM
Flash Read Only Memory
GMZ
Zeus gas measuring module
HERMES
Zeus processor unit
ILCA
Infrared Low Cost Analyzer
IRIA
Infrared Rapidly Identifying Analyzer
MIB
Management Information Base
MIR
Mid Infrared Range
MISO
Master Input Slave Output
MOSI
Master Output Slave Input
NIR
Near Infrared Range
PLD
Programmable Logic Device
PWM
Puls Width Modulation
RAM
Random Access Memory
SDRAM
Synchronous Dynamic RAM
SNMP
Simple Network Management Protocol
SPI
Serial Peripheral Interface
SRAM
Static RAM
TFT
Thin Film Transistor
TIVA
Total IntraVenous Anesthesia
UART
Universal Asynchronous Receiver/Transmitter
USB
Universal Serial Bus
UPS
Uninterruptible Power Supply
Zeus
Name of anaesthesia workstation system
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Abbreviations
Abbreviations and definitions
Zeus Infinity Empowered anaesthesia workstation
system
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Abbreviations
Abbreviations and definitions
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Function descriptions
This chapter contains descriptions of the device's technical functions.
Block diagrams – Zeus IE.........................................................................................................
Operator control unit - monitor C500 ........................................................................................
Shutdown response of the Zeus IE ..........................................................................................
Anaesthetic gas box .................................................................................................................
Pipeline supply module.............................................................................................................
Power supply unit .....................................................................................................................
PCB box ...................................................................................................................................
Dirona PCB...............................................................................................................................
Nina PCB..................................................................................................................................
Zeus gas analyzer 2.1 (GMZ 2.1) .............................................................................................
"WaterLock 2" water trap ..........................................................................................................
System Gas Analyzer (SGA) ....................................................................................................
Patient gas analyzer (PGA) ......................................................................................................
Blower Unit ...............................................................................................................................
Breathing system ......................................................................................................................
DIVA anaesthetic dosing unit ...................................................................................................
Apollo........................................................................................................................................
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Function descriptions
Block diagrams – Zeus IE
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Block diagrams – Zeus IE
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1
Fig. 1
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Block diagram – Zeus IE with PCB box
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Function descriptions
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Block diagrams – Zeus IE
Fig. 2
Block diagram – Zeus IE with Dirona PCB
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Function descriptions
Operator control unit - monitor C500
2
Operator control unit - monitor C500
The system monitor is a special Infinity C500 for Zeus IE, and based on on its
touch-screen and associated software also functions as an operator control
unit.
9537
There are different variants of the Infinity C500 depending on the specific
application, differing only in their software. The hardware may vary slightly by
virtue of chosen options. One example may be the Gas LED panel, which
displays the Zeus IE driving gases (Fig. 3).
Fig. 3
Gas LED panel option
No.2201_0000005424-001
For a more detailed function description refer to the separate "Infinity C500"
service documentation.
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Function descriptions
Shutdown response of the Zeus IE
3
Shutdown response of the Zeus IE
3.1
Shutdown
1. In Standby on the Infinity C500 press the On/Off key.
The Shutdown? dialog box opens up.
2. Tap the on-screen Shutdown button.
The system is shut down.
3.2
Monitor reset
If the screen is no longer responding to operator inputs, the monitor can be
rebooted.
1. Press and hold down the On/Off key on the Infinity C500 for at least 4
seconds.
The monitor is switched off.
2. After switching off, press the On/Off key again.
Reboot: The Zeus IE reboots the monitor. This takes about 3 minutes. During
this time no monitoring is available.
–
Ventilation continues (fresh gas mode at 0.5 L/min; with ext. FG outlet
option: 3 L/min).
–
Check ventilation with a mechanical manometer. Carry out manual
ventilation as necessary.
After rebooting:
–
3.3
Safety settings are active, meaning all settings are retained.
Exception gas metering: delivery 0.5 L/min O2 without anesthetic.
Quitting service mode
CAUTION
Keep to the following sequence!
If the following sequence is not followed when restarting the Zeus IE, it may
not start up correctly and exhibit malfunctions.
When restarting the Zeus IE, be sure to keep to the sequence set out below.
1. Click the "Next Reboot To Hermes" button in the Service Tool and shut
down the cockpit by choosing Shut down the computer from the menu.
2. Switch off Zeus at the power switch. Wait until the audible signal stops.
3. Turn the power switch back on.
No.2201_0000005424-001
The Zeus IE can now be started by the On/Off key on the Infinity C500.
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Function descriptions
Anaesthetic gas box
4
Anaesthetic gas box
4.1
General
The anaesthetic gas box comprises the trolley and the housing of the Zeus.
Apart from the monitor and the operator control unit, it includes all the
components required to operate the functions of the Zeus IE. They include:
Power supply unit
–
PCB box or Dirona PCB
–
Nina PCB
–
Pipeline supply module (ZV = pipeline supply system)
–
DIVA anaesthetic dosing unit (Digital anaesthesia dosage unit)
–
"WaterLock 2" water trap
–
Zeus gas analyzer 2.1 (GMZ 2.1) (GMZ 2.1)
–
Blower Unit (Ventilator)
–
Breathing system
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Function descriptions
Pipeline supply module
Pipeline supply module
8427
5
Fig. 4
5.1
Pipeline supply module complete
Purpose
The pipeline supply module comprises a gas carrying component, the
Pipeline Supply Block PCB and the DAGMAR PCB.
The pipeline supply module performs the following functions:
–
Feed-in of the required compressed gases by way of pipeline supply or
cylinder connections
–
Monitoring of the input pressures
–
Reduction of the compressed gases to a level withstandable by the
system
No.2201_0000005424-001
In the gas-carrying component of the pipeline supply module the compressed
gases can be reduced as required and fed to the relevant assemblies.
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Function descriptions
Pipeline supply module
Gas supply
5.2.1
Feed-in of compressed
gases with pipeline
supply
The following description relates to the extract from the anaesthesia
workstation gas flow diagram (Fig. 5).
19872
5.2
Fig. 5
Extract, gas flow diagram, gas inlet block
The compressed gases O2, N2O and AIR are fed in via the pipeline supply to
the gas supply block of the pipeline supply module.
The compressed gas flows out of the pipeline supply from the pipeline supply
port through the filter (27) to the pressure sensor (28). The pressure sensor
signal is processed in the Pipeline Supply Block PCB (see also function
description for Pipeline Supply Block PCB). The compressed gas flows on to
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The description is based on the example of O2, and is identical for N2O and
AIR.
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Function descriptions
Pipeline supply module
the non-return valve (29). The non-return valve (29) prevents the gas from
flowing into the open air from the connected cylinder via any CL port which
may be open.
The following description applies only to AIR!
Downstream of the non-return valve (15) is a tap for an optional secretion
suction device with ejector drive. Another tap supplies the DIVA supply
module with propellant gas.
The following description applies only to O2!
The additional O2 outlet (7), fitted with a self-closing coupling (8), permits
operation of an outpatient (Ambu) bag with oxygen dosage (Oxydem) for
example. In the pressure regulator (40) the compressed gas can be reduced
to a constant output pressure of 2.4 bar and routed to the digital gas mixer
DAGMAR and to the O2 flush and the O2 emergency flow control valve. The
patient system can be flushed with O2 by way of the parallel-connected O2
flush valves (44) and (46) mounted on the left and right sides of the unit. The
flow is >35 L/min. By means of the "O2 safety flow" (42) flow adjuster the
system is supplied with an O2 safety flow adjustable between 0.4 and
12 L/min. As an option, a 0 to 10L/min regulated O2 outlet for an O2
flowmeter is installed.
5.2.2
Feed-in of compressed
gases with reserve gas
cylinders
As an option, it is also possible to connect a maximum of 3 reserve gas
cylinders.
The cylinder pressure regulator of the AIR reserve gas cylinder feeds
directly into the pipeline supply AIR connection in place of the pipeline
supply. The O2 and N2O reserve gas cylinders have a separate cylinder
feed-in!
The following function description is based on the example of O2, and is
identical for N2O.
O2 flows out of the reserve gas cylinder from the cylinder connection through
the filter (23) to the pressure sensor (24). The pressure sensor signal is
processed in the Pipeline Supply Block PCB (see also function description for
Pipeline Supply Block PCB). The compressed gas flows on to the pressure
regulator (25) and can be reduced to an output pressure of 5.5 bar. The nonreturn valve (26) prevents compressed gas from flowing out of the connected
CS line via a cylinder connection which may be open.
Pipeline Supply Block
PCB
The Pipeline Supply Block PCB combines a processor system for pressure
sensor signals and a CAN interface on a PCB (Fig. 6).
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5.2.3
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Function descriptions
7687
Pipeline supply module
Fig. 6
Pipeline Supply Block PCB block diagram
The PCB evaluates the pipeline supply and reserve gas cylinder pressure
sensor signals and controls the eight indicator LEDs on the control panel of
the main monitor. As long as the mains power is connected, the eight LEDs
are supplied with a permanent 24 V (ULED). This means display can be
maintained even when the unit is switched off.
The operating voltage for the sensors (12 V) and the processor system (5 V)
is derived from the supply voltage. The input voltage is monitored by the
controller.
The pipeline supply pressure sensors operate in the range from 0 to 10 bar,
delivering output voltages of 0.2 to 4.8 V which are routed by way of a
multiplexer to the A/D converter. The high pressure sensors have an
additional 4 to 20 mA interface. The current signal is converted into a voltage
of 0.2 to 4.8 and likewise routed by way of a multiplexer to the A/D converter.
AN NTC on the PCB determines the ambient temperature in the vicinity of the
Pipeline Supply Block PCB.
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The microcontroller reads in the pressure sensor signals and transfers the
data as a CAN object onto the CAN bus. The CAN bus is isolated by
optocoupler from the rest of the system. A green status LED indicates the
status of the data transfer to the CAN bus. A yellow status LED is
permanently lit when the system is working properly and flashes in the event
of an error. The signals to activate the eight LEDs on the control panel of the
main monitor are transmitted over the SPI bus.
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Function descriptions
Pipeline supply module
5.3
DAGMAR mixed gas dosage unit
5.3.1
Purpose
The DAGMAR (Digital Advanced Gas Mixer for Anaesthesia Requirements)
mixed gas dosage unit is a digital mixer and dosage unit. The mixer and
dosage unit comprises the DAGMAR valve block and the DAGMAR PCB. It
performs the following tasks:
–
DAGMAR valve block
The Dagmar valve block is divided into two separate branches (Fig. 7).
7688
5.3.2
Digital mixing and metering of oxygen and either nitrous oxide or
compressed air
Fig. 7
Extract from gas flow diagram, Dagmar valve block
One branch meters oxygen. It consists of the O2 switching valve (63), the O2
supply pressure sensor (64) and 5 digital valves (54) to (58) with downstream
flow control valves for mixing. The valve (59) is clocked so the combination of
valves (54) to (59) enables all possible flow values in the O2 branch to be
implemented.
The second branch meters compressed air or nitrous oxide. It consists of the
Air (60) and N2O (62) switching valves, the supply pressure sensor (61) and
5 digital valves (47) to (51) with downstream flow control valves for mixing.
The valve (52) is clocked so the combination of valves (54) to (59) enables all
possible flow values in the AIR and N2O branches to be implemented.
The outlets of both branches are routed through a flow sensor in the DIVA
anaesthetic dosage unit to the breathing system.
DAGMAR PCB
No.2201_0000005424-001
5.3.3
Technical Documentation IPM
The DAGMAR PCB consists of a processor system (Fig. 7) and its functions
are
–
to control the DAGMAR valve block
–
to interface to the CAN bus
–
to calculate the pipeline supply and cylinder pressures displayed on the
main monitor and generate alarms from them as necessary
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Function descriptions
7692
Pipeline supply module
Fig. 8
Block diagram of the DAGMAR PCB
The operating voltage for the sensors (12 V) and the processor system (5 V)
is derived from the supply voltage. The input voltage is monitored by the
processor system.
The supply pressure sensors operate in a range from 0 to 4 bar absolute,
delivering an output voltage of 0 to 5 V. The processor system reads in the
output voltages by way of an A/D converter and evaluates them.
The DAGMAR valve block is controlled by a power driver. In the event of an
error the voltage to the power driver for the carrier gas can be cut by means
of a "dead man's signal" on the system bus. For safety reasons, the signal on
the system bus is electrically isolated by an optocoupler.
The processor system has a serial interface which is also configurable to TTL
level.
The signals on the CAN bus, too, are electrically isolated from the rest of the
system by optocoupler.
No.2201_0000005424-001
The LEDs and jumpers on the PCB are currently only used by Development,
and are irrelevant to Service.
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Function descriptions
Power supply unit
6
Power supply unit
6.1
General
6.1.1
Purpose
The power supply unit of the device supplies all the electrical components
with the required voltages and currents. It has an uninterruptible power
supply (UPS) with rechargeable batteries.
6.1.2
Features
The power supply unit has the following features:
–
All output voltages are short-circuit-proof and stable at no-load.
–
Charging of the rechargeable batteries by an intelligent battery charge
manager.
–
In the event of power failure battery operation is possible for a minimum
of 30 minutes if the batteries are fully charged.
–
Temperature-controlled fan for cooling of the power supply unit.
–
A CAN interface permits exchange of data and status information
between the power supply unit and the anaesthetic system.
The power supply unit's readiness is indicated by LEDs on the control panel
of the system monitor:
6.2
Mains LED off
-
No mains power
Mains LED green
-
Mains power connected to power supply unit
Bat. LED off
-
Charge below 10%
Bat. LED orange
-
Charge below 50%
Bat. LED green
-
Charge above 50%
Power LED off
-
Device is off
Power LED green
-
Unit is switched on
Mains power input
The power supply unit operates with an input voltage of 85 V to 264 V at a
rated frequency of 45 Hz to 65 Hz. It is connected by way of an inlet socket
for non-heating apparatus. The inlet socket for non-heating apparatus is
mechanically secured against unintentional removal. The mains power cable
is protected by two primary fuses in the power supply unit. A temperatureregulated fan is used to cool the power supply unit. If the temperature in the
power supply unit rises due to an error, the power supply unit automatically
switches to the uninterruptible power supply (UPS). When the rechargeable
battery is full charged, operation can be maintained for a minimum of 30
minutes.
No.2201_0000005424-001
The power supply unit has no switch. If the mains plug is connected, the
battery charge manager for the rechargeable battery and the voltage supply
to the indicator LEDs on the control panel of the system monitor are active.
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