Zeus IE Technical Documentation IPM Rev 8.0

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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

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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 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........................................................................................................................................

14

16

17

18

19

25

28

33

36

40

42

44

51

55

58

64

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Function descriptions

Block diagrams – Zeus IE

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Block diagrams – Zeus IE

15561

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

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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.

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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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–

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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

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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

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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.

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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.

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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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