Philips IntelliVue MP90 Service Manual

IntelliVue MP90

Service Guide

IntelliVue Patient Monitor

MP90

Patient Monitoring

Part Number M8000-9351B

1Table of Contents

1 Introduction 13

Who Should Use This Guide 13 How to Use This Guide 13 Abbreviations 13 Responsibility of the Manufacturer 14 Passwords 14 Warnings and Cautions 14

2 Theory of Operation 15

Monitor Theory of Operation 15

System Boundaries 15 Hardware Building Blocks 16

IntelliVue MP90 17 Optional Hardware 18 Compatible Devices 18 Power Supply 19 CPU Boards 19 I/O Boards 20

Data Flow 20

Data Acquisition 20 Data Provider System Service 21 Persistent Data Storage System Service 21 Display and User Interface Service 21 Data Output 21 Monitor Applications 22 Internal LAN (Measurement Server Link) 22 Philips Clinical Network 23

How does the Support Tool Work with the Monitor 23 Monitor Software Block Diagram 24 Block Diagram Legend 26

3 Testing and Maintenance 31

Concepts 31 Test Reporting 31 Recommended Frequency 32 Tests Recommended When Performing... 33

Installation 33 Repair 33 Preventive Maintenance 33

Performance Verifications 33 Upgrades 34

Te s t s 34

Visual Test 34 Power On Test 34 NBP Tests 34

NBP Accuracy Test 35 NBP Leakage Test 36 NBP Linearity Test 36 Valve Test 36

Sidestream CO2 Per formance Test 37

Barometric Pressure Check and Calibration 37 Leakage Check 38 Pump Check 39 Flow Rate Check and Calibration 39 Noise Check 39 CO

Gas Measurement Calibration Check 39

Calibration Verification 40 Reset Time Counters 40

Temperature Accuracy 41 ECG/Resp Performance Test 42

ECG Performance 42 Respiration Performance 42

Invasive Pressure Performance Test 42 SpO2 Performance Test 42 Cardiac Output Performance Test 43

Service Tool Procedure, Version 1 43 Service Tool Procedure, Version 2 43

BIS Performance Test 43

PIC/DSC Test 43

Nurse Call Relay Performance Test 44

Phone Jack Type Connector Test 44 Multi-Port Nurse Call Connector Test 44

ECG Sync Performance Test 45 VueLink Tests using VueLink Test Module 46

Tes t Pr o c e d u r e 4 6

Safety Testing 47

Warnings, Cautions, and Safety Precautions 47 Safety Test Procedures 47

Touchscreen Calibration 50

4 Troubleshooting 51

Introduction 51 How To Use This Section 51 Who Should Perform Repairs 51 Replacement Level Supported 51

Software Revision Check 52 Obtaining Replacement Parts 52 Troubleshooting Guide 52

Checks for Obvious Problems 52 Checks Before Opening the Instrument 52

Checks with the Instrument switched Off 52 Checks with the Instrument Switched On, AC connected 53 Initial Instrument Boot Phase 53

Troubleshooting Tables 54

How to use the Troubleshooting tables 54 Boot Phase Failures 55 External Display is blank 58 External Touch Display not functioning 58 General Monitor INOP Messages 59 Remote Alarm Device 60 Remote Extension Device 60 Keyboard/Mouse not functioning 61 Network related problems 62 Wireless Network 63 Multi-Measurement Server 64 MSL-related problems 64 Alarm Issues 66 Alarm Lamps 66 Alarm Tones 67 Alarm Behavior 67 Individual Parameter INOPS 67 Flexible Module Server 68 Printer 69 Recorder 70 MIB / RS232 70 Flexible Nurse Call Relay 71 Troubleshooting the ECG OUT 72 Data Flow Marker In and ECG Wave 72

Status Log 73 Troubleshooting with the Support Tool 74 Troubleshooting the Individual Measurements or Applications 75

5 Repair and Disassembly 77

Tools Required 77 MP90 CMU Disassembly 77

Removing I/O Boards 77 Removing the Top Cover 79 Removing the Plastic Feet and/or the Locking Cam 81 Removing the optional Fans (Dual CPU Versions only)* 82 Replacing the Second (Independent) Video Board

(Dual CPU Versions only)

Removing the Second CPU/Main Board (Dual CPU Versions only) 84 Accessing the Main CPU or Primary Video Board (Dual CPU Versions) 86 Replacing the Primary Video Board 88 Removing the Main Board 90 Removing the Power Supply 93 Removing the Speaker 95 Removing the Power On/Off Switch 95

Flexible Module Server (FMS) Disassembly 97

Removing the Handle and the Measurement Server Mount 97

Plug-in Modules 102

Plug-In Module Disassembly 102 tcpO2/tcpCO2 Calibration Chamber Kit 103 Recorder Module Paper 104

Disassembly Procedures for the Measurement Server Extension 105

Removing the Front Cover 105 Removing the Extension Bottom Cover 106 Removing the CO2 Scrubber 107 Removing the Pump 108

Refit Procedures for the Measurement Server Extension 108

Refitting the CO2 Scrubber 109 Refitting the Pump 109 Refitting the Extension Bottom Cover 109 Refitting the Front Cover 110 General Reassembly/Refitting Comments 110 Following Reassembly 110

6 Parts 111

MP90 Parts 112

Exchange Parts 112 Replacement Parts 113

Flexible Module Server Parts 114

Exchange and Replacement Parts 114

Multi-Measurement Server Parts 115 Measurement Server Extension Parts (M3015A and M3016A) 117

Exchange Parts List 119

Plug-in Modules Part Numbers 119

Part Number Table 119

Exchange Modules, Table 1 120 Exchange Modules, Table 2 120

Plug-In Modules Replaceable Parts 121

Single-Width Plug-In Module 122 Double-Width Plug-In Module 122 Plug-in Module Replaceable Parts 123 Plug-In Module Language Specific Front Housings, Table 1 123 Plug-In Module Language Specific Front Housings, Table 2 123 Plug-In Module Specific Bezels 124

BIS Module Replaceable Parts 124

BIS Module Components 125

tcpO2/tcpCO2 Module Accessories 125

External Display Part Numbers 126 Remote Input Devices Part Numbers 127 Remote Alarm Device Part Numbers 128 Remote Extension Device Part Numbers 129

7 Installation Instructions 131

Unpacking the Equipment 131 Initial Inspection 132

Mechanical Inspection 132 Electrical Inspection 132 Claims For Damage and Repackaging 132

Claims for Damage 132 Repackaging for Shipment or Storage 132

Installing the Monitor (M8010A) 132

Mounting Instructions 132

Assembling Mounts 132

Connections 133 Installing Interface Boards 134 Connection of MIB Devices 135

Installing Remote Devices 136

Mounting the Remote Display (M8031A) 136

Connections 136

Mounting the 17” Remote Display (M8033A) 137 Flexible Module Server and/or Multi-Measurement Server 137

Positioning the Measurement Server on a Clamp Mount 137 Mounting the MMS Mount to the FMS (M8048A) 137 Attaching the MMS to a Mount 138 Detaching the Measurement Server from a Mount 138 Mounting the Remote Extension Device to the FMS 139 Mounting the BIS Engine to the FMS 139 Mounting the FMS 140 Connections 141 MSL Cable Termination 141

Remote Alarm Device 143

Mounting 143 Connections 143

Remote Extension Device 144

Mounting 144 Connections 145 Cabling 145

Keyboard/Mouse 146

Philips Clinical Network (wired) 146

Philips Clinical Network (wireless) 146 Flexible Nurse Call Relay 146

Connections 146

ECG Out Functionality 147

Connections 147

Configuration Tasks 147

Setting Altitude and Line Frequency 148 Configuring the Equipment Label 148 Configuring the printer 148 Setting the Display Resolution (M8033A only) 148

8 Site Preparation 149

Introduction 149

Site Planning 149 Roles & Responsibilities 149

Site Preparation Responsibilities 149 Procedures for Local Staff 150 Procedures for Philips Personnel 151

Monitor M8010A Site Requirements 151

Space Requirements 151 Environmental Requirements 152

Te m p e r at u r e 15 2 Humidity 152 Altitude 152

Electrical and Safety Requirements (Customer or Philips) 152

Safety Requirements 152 Electrical Requirements 153

Remote Device Site Requirements 153

Multi-Measurement Server M3001A or Flexible Module Server M8048A 154

Space Requirements Multi-Measurement Server M3001A 154 Space Requirements Flexible Module Server M8048A 154 Environmental Requirements Multi-Measurement Server M3001A 155 Environmental Requirements Flexible Module Server M8048A 155 Cabling Options and Conduit Size Requirements 155

Remote Displays - M8031A 156

Space Requirements 156 Environmental Requirements 156 Electrical and Safety Requirements 157

Remote Displays - M8033A 157

Space Requirements 157 Environmental Requirements 157 Electrical and Safety Requirements 157 Cabling Options and Conduit Size Requirements 158

Remote Alarm Devices 158

Space Requirements 158

Cabling Options and Conduit Size Requirements 158

Remote Extension Device 159

Space Requirements 159 Cabling Options and Conduit Size Requirements 159 Input Devices 159

Local Printer 160

Philips Medical LAN 160 MIB Interface 160 Flexible Nurse Call Relay Interface 161 ECG Out Interface 161

9 Anesthetic Gas Module 163

Introduction 163

Description 163 Product Structure 163 Physical Specifications 163 Environmental Specifications 164 Performance Specifications 164

CO2 Measurement 165 AWRR derived from CO2 Waveform 165 N2O Measurement 165 O2 Measurement 165 Anesthetic Agent Measurement 165 Alarm Ranges 166 Alarm Delay 166 Apnea Alarm 166 INOP Alarms 166

General Measurement Principles 167 Theory of Operation 167

Main PC Board 168 Power Supply 169 Pneumatic System 169 Pump 170 Wate rt rap 170 Sample Flow Through the Pneumatic Path 171

Agent Identification Assembly 171

Measurement Principle 172

O2 Sensor 172

Specifications 172 Measurement Principle 172

Infrared Measurement Assembly 173

Installation and Patient Safety 174

Physical Installation 174 Environment 175 Label Sheet 175 Making Connections to the AGM 175

Sample Gas Connections to the Gas Exhaust 176

Returning the Gas Sample 176 Setting Up the Gas Return 177 Removing the Gas Sample 178

Setup and Configuration Procedures 178

Altitude Configuration 178 Connect Sample Input Tubing 178

Preventive Maintenance (PM) Tasks 178 Post-Installation Checks 179 Safety Requirements Compliance and Considerations 179

Explanation of Symbols Used 179 Power Supply Requirements 180 Grounding the System 180 Equipotential Grounding 181 Combining Equipment 181

Checking and Calibrating the Anesthetic Gas Module 181

Access Service Functions of the M1026A Anesthetic Gas Module 181 When and how to check the Philips M1026A Anesthetic Gas Module 183 Equipment required for checking 183 Checks and adjustments 184

Performance Leakage Check 184 Performance Diagnostic Check 185 Performance Flowrate Check 185 Total Flowrate Check and Adjustment in Purge Mode 185 Measurement Path Flowrate Check and Adjustment 186 Total Flowrate Check in Normal Mode 188

Zero Calibration 188 Barometric Pressure Check and Calibration 189 Span Calibration Check 190

Disposal of Empty Calibration Gas Cylinder 192

Maintaining the Anesthetic Gas Module 193

Preventive Maintenance (PM) Tasks 193 Cleaning 194 Replace PM Parts 194

Internal Nafion Tubing with Bacterial Filters and manifold Seals 194

Room-Air Filter 196 Pump Filter 197 Performance Checks 198

Other factors to maximize uptime or reduce cost of ownership: 198

Troubleshooting the Anesthetic Gas Module 198

Compatibility Criteria for the AGM and the IntelliVue Monitors 198 Flow Charts for Communication and Measurement Type Problems 198 Hardware Related Troubleshooting Strategy 203 INOPs 204 Calibration Checks 206

Calibration Checks Troubleshooting Table 207

Diagnostic Checks 208

Problem Solving Hierarchy 209 Pneumatic System Diagnostic Checks 210 O2 Assembly Diagnostic Checks 210 Optical Path Disgnostic Checks 213 IR Measurement Assembly Diagnostic Checks 214 Agent ID Assmebly Diagnostic Checks 215 Power Supply Diagnostic Checks 216 Operating Temperature Diagnostic Checks 217

Test Points, Connectors and Jumpers 217

Tes t Poi n t s 21 7 Connectors 218 Jumpers 218

Repairing the Anesthetic Gas Module 220

Introduction 220 The Top Cover 222

Removal 222 Replacement 222

Lifting the IR Measurement Mounting Bracket 224

Removal 225 Replacement 225

Infrared Measurement Assembly Head 227

Transferring NVRAM Data to a Replacement Head 227

Sample Cell 231

Removal 231 Replacement 231

Solenoid Valve #1 235

Removal 235 Replacement 235

Power Supply Unit 237

Removal 237 Replacement 237

Main PC Board 238

Removal 238 Replacement 239

O2 Sensor 240

Removal 240 Replacement 241

Agent Identification Head 243

Removal 243 Replacement 244

Pump 245

Removal 245 Replacement 245

Fan 246

Removal 246 Replacement 246

Solenoid Valve #2 248

Removal 248 Replacement 248

Top C ov e r PC B o a rd 249

Removal 249 Replacement 249

Watertrap Manifold and Protector 251

Removal 251 Replacement 251

Power Fuses 252

Removal 252 Replacement 252

Test and Inspection Matrix 252 When to Perform Test Blocks 256 Safety Test Appendix 257

Parts List 259

Calibration Equipment 264

This Service Guide contains technical details for the IntelliVue MP90 Patient Monitor, the MultiMeasurement Server (MMS), the Flexible Module Server (FMS) and the Measurement Server Extensions.

This guide provides a technical foundation to support effective troubleshooting and repair. It is not a comprehensive, in-depth explanation of the product architecture or technical implementation. It offers enough information on the functions and operations of the monitoring systems so that engineers who repair them are better able to understand how they work.

It covers the physiological measurements that the products provide, the Measurement Server that acquires those measurements, and the monitoring system that displays them.

Who Should Use This Guide

1Introduction

This guide is for biomedical engineers or technicians responsible for troubleshooting, repairing, and maintaining Philips’ patient monitoring systems.

How to Use This Guide

This guide is divided into eight sections. Navigate through the table of contents at the left of the screen to select the desired topic. Links to other relevant sections are also provided within the individual topics. In addition, scrolling through the topics with the page up and page down keys is also possible.

Abbreviations

Abbreviations used throughout this guide are:

Name Abbreviation

IntelliVue MP90 Patient Monitor the monitor

Flexible Module Server FMS

Multi-Measurement Server MMS

Measurement Server Link MSL

Medical Information Bus MIB

Anesthetic Gas Module AGM

1 Introduction Responsibility of the Manufacturer

Responsibility of the Manufacturer

Philips only considers itself responsible for any effects on safety, reliability and performance of the equipment if:

• assembly operations, extensions, re-adjustments, modifications or repairs are carried out by persons authorized by Philips, and

• the electrical installation of the relevant room complies with national standards, and

• the instrument is used in accordance with the instructions for use.

To ensure safety, use only those Philips parts and accessories specified for use with the monitor. If nonPhilips parts are used, Philips is not liable for any damage that these parts may cause to the equipment.

This document contains proprietary information which is protected by copyright. All Rights Reserved. Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws.

Philips Medizin Systeme Böblingen GmbH

Hewlett-Packard Str. 2

71034 Böblingen, Germany

The information contained in this document is subject to change without notice.

Philips makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties or merchantability and fitness for a particular purpose.

Philips shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.

Passwords

In order to access different modes within the monitor a password may be required. The passwords are listed below.

Monitoring Mode: No password required

Configuration Mode: 71034

Demo Mode: 14432

Service Mode: 1345

Consult the configuration guide before making any changes to the monitor configuration.

Warnings and Cautions

In this guide:

•A warning alerts you to a potential serious outcome, adverse event or safety hazard. Failure to observe a warning may result in death or serious injury to the user or patient.

•A caution alerts you where special care is necessary for the safe and effective use of the product. Failure to observe a caution may result in minor or moderate personal injury or damage to the product or other property, and possibly in a remote risk of more serious injury.

2Theory of Operation

Monitor Theory of Operation

The IntelliVue Patient Monitor:

• displays real-time data

• controls the attached measurement servers

• alarms in the case of patient or equipment problems

• offers limited data storage and retrieval (trending)

• interfaces to the Philips Clinical Network and other equipment

A monitor with just a single integrated measurement server can be connected to additional building blocks to form a monitoring system with a large number of measurements, additional interface capabilities and multiple slave displays. These elements cooperate as one single integrated real-time measurement system.

System Boundaries

The following diagram discusses specific boundaries within the overall system with respect to their openness and real-time requirements:

2 Theory of Operation Monitor Theory of Operation

Philips Clinical Network

Measurement LAN

combines components of one patient monitor; real time requirements across all interconnected elements

Philips Clinical Network (wired LAN)

connects multiple patient monitors, information centers, application servers; closed system, only Philips qualified products (tested and with regulatory approval) are connected, Philips is responsible for guaranteed real-time functionality and performance

Philips Clinical Network (wireless)

like Philips Clinical Network (wired) LAN, however due to current wireless technologies available it has reduced bandwidth, longer latencies, reduced functionality

Hospital LAN, Internet

Standard Network, not under Philips control, no guaranteed service, no real-time requirements

Hardware Building Blocks

The following hardware building blocks make up the monitoring system:

Monitor Theory of Operation 2 Theory of Operation

IntelliVue MP90

The MP90 monitor:

• can be used with the standalone M8031A 15-inch or the M8033A 17-inch color LCD TFT display with touchscreen operation.

• can also be used with other XGA and SXGA standalone off-the-shelf displays which comply with medical standards such as IEC 60601-1 and IEC 60601-1-2.

• has the central processing unit in a separate module

• uses the Philips SpeedPoint as primary input device whereas the Philips Touchscreen and computer devices such as mice, trackball, and keyboard can be added optionally

• supports the Flexible Module Server (FMS)

Building Blocks:

2 Theory of Operation Monitor Theory of Operation

|| I/F To Local Printer

Power Supply

I/F

Boards

1st Main Board

Remote Device I/F to

Alarm Device I/F*

Alarm Device and Remote Input

MIB To AGM

1 Main Board

I/F

2nd

Main Board

Boards

FMS CPU

FMS M/B

MSL

MMS CPU

Video I/F

Board

Video I/F

Board

To Ext. Display

I/F

To Ext. Display

Optional Hardware

The M8031A 15-inch color LCD TFT display or the M8033A 17-inch color LCD TFT display (both with touchscreen operation) can be ordered optionally. Additional input devices such as mice, trackball or keyboard can also be added. If the monitor is ordered with the wireless LAN option an external wireless transmitter is required. For further details regarding the wireless network please refer to the M3185A Philips Clinical Network documentation.

Compatible Devices

Figure 1 M8048A Flexible Module Server (FMS)

Monitor Theory of Operation 2 Theory of Operation

Figure 2 M3001A Multi-Measurement Server (MMS)

Power Supply

The AC/DC converter transforms the AC power coming from the power plug into 48 V/120W DC source and isolates the monitoring system from the AC power mains.The 48V is distributed via power bus and supplies power to all the components of the system: The 56 V DC power needed for the FMS, MMS and measurement server extension is created by an isolating DC/DC converter. The CPU is supplied with 3.3 V and 5 V DC power. The transformation is performed in two steps: The first DC/ DC converter is a power regulator which reduces the variations caused by load changes on the 48V power bus. The second DC/DC converter converts the power to the needed voltage. Interface boards require a power of 10V AC.

CPU Boards

The CPU boards have an MPC860 50 MHz processor that provides a number of on-chip, configurable interfaces. An array of 12 fast UARTs with configurable protocol options are implemented in an ASIC (along with other system functions such as independent watchdogs etc.), providing interfacing capabilities to measurement modules and I/O boards. The serial interfaces can easily be electrically isolated. The main board contains additional video hardware.

Flexible Module Server

CPU

Bank of I/Os

Modules

The CPUs provide two LAN interfaces to interconnect CPUs (via the Internal LAN) or to connect to the Philips Clinical Network.

IntelliVue Patient Monitor Multi-Measurement Server

CPU Video Bank of I/Os

CPU Bank of I/Os

Measurement

Interfaces

Acquisition

The CPU capabilities are identical. Different loading options are coded on serial EEPROMs to support the automatic configuration of the operating system at boot time.

2 Theory of Operation Monitor Theory of Operation

I/O Boards

Interfaces to the monitor are implemented via I/O boards. The location of these boards is restricted by general rules. The I/O slot designations diagram and the I/O matrix which outline the I/O board placement rules can be found in the Installation Instructions section.

The following is a list of Interface (I/O) boards which may be present in your monitor, depending on your purchased configuration:

•MSL

•Video

• Philips Clinical Network (LAN wired or wireless)

•PS/2

• MIB/RS232

•Flexible Nurse Call

•Parallel printer

• Remote devices (Remote Alarm Device, Remote Extension Device)

The specifications for the above listed interfaces can be found in the technical data sheet for the monitor and in the Specifications chapter of the Instructions for Use.

Data Flow

The following diagram shows how data is passed through the monitoring system. The individual stages of data flow are explained below.

Display

and User

Interface

Data

Acquisition

Data

Provider

Applications

Service

Persistent

Data

Storage

Data

Output

Data Acquisition

Monitoring data (for example patient measurement data in the form of waves, numerics and alerts) is acquired from a variety of sources:

Monitor Theory of Operation 2 Theory of Operation

•Measurement Servers

The Measurement Servers connected to the internal LAN convert patient signals to digital data and apply measurement algorithms to analyze the signals.

• External measurement devices

Data can be also acquired from devices connected to interface boards of the monitor. Software modules dedicated to such specific devices convert the data received from an external device to the format used internally. This applies to parameter modules and the Anesthetic Gas Module.

• Server systems on the Philips Clinical Network

To enable networked applications such as the other bed overview, data can be acquired from server systems attached to the Philips Clinical Network, for example a Philips Information Center.

Data Provider System Service

All data that is acquired from measurement servers or external measurement devices is temporarily stored by a dedicated data provider system service. All monitor applications use this central service to access the data in a consistent and synchronized way rather than talking to the interfaces directly.

This service makes the applications independent of the actual type of data acquisition device.

The amount of data stored in the data provider system service varies for the different data types. for example several seconds of wave forms and the full set of current numerical values are temorarily stored in RAM.

Persistent Data Storage System Service

Some applications require storage of data over longer periods of time. They can use the persistent data storage system service. Dependent on the application requirements, this service can store data either in battery backed-up (buffered) memory or in flash memory. The buffered memory will lose its contents if the monitor is without power (not connected to mains) for an extended period of time. The flash memory does not lose its contents.

The trend application for example stores vital signs data in a combination of flash memory and buffered memory, while the system configuration information (profiles) is kept purely in flash memory.

Display and User Interface Service

Applications can use high level commands to display monitoring data or status and command windows on the LCD panel. These commands are interpreted by the display manager application. This application controls the dedicated video hardware which includes video memory and a special ASIC.

User input is acquired from a variety of input devices, for example the SpeedPoint, the touchscreen or other standard input devices (keyboard, mouse) which may be attached to I/O boards. The system software makes sure that the user input is directed to the application which has the operating focus.

Data Output

The monitoring system is very flexible and customizable regarding its data output devices. Built-in devices (for example LAN, speaker, video) provide the basic output capabilities.

These capabilities can be enhanced by adding additional I/O boards, as required in the specific enduser setup. The additional I/O boards typically provide data to externally attached devices, for example to printers, RS232 based data collection devices, nurse call systems etc.

2 Theory of Operation Monitor Theory of Operation

The monitor can identify I/O boards by means of a serial EEPROM device that stores type and version information. The operating system detects the I/O boards and automatically connects them with the associated (interface driver) application. For some multi-purpose cards it is necessary to configure the card for a particular purpose first (for example the dual MIB/RS232 card can support external touch display, data import, data export).

Monitor Applications

The monitor applications provide additional system functionality over the basic measurement and monitoring capabilities. This includes for example trending, report generating, event storage or derived measurements.

In general, the monitor applications use the data provider system service to access the measurement data. Application interfaces to the other system services allow the application to visualize data, to store data over extended periods of time or to output data to other devices.

Internal LAN (Measurement Server Link)

All components of the monitoring system (including measurement servers and CPUs in the monitor) communicate using an IEEE802.3/ Ethernet LAN in the Measurement Server Link (MSL). This network is used to distribute data between the components, for example:

• Digitized patient signals including wave data, numerical data and status information (typically from the measurement server to a display unit)

• Control data representing user interactions (typically from the display unit to a measurement server)

• Shared data structures, for example representing patient demographical data and global configuration items

The internal LAN allows plug and play configuration of the monitoring system. The system automatically detects plugging or unplugging of measurement servers and configures the system accordingly.

The components on the internal LAN are time-synchronized to keep signal data consistent in the system. Dedicated hardware support for synchronization eliminates any latency of the network driver software.

The integrated LAN provides deterministic bandwidth allocation/reservation mechanisms so that the real-time characteristic of signal data and control data exchange is guaranteed. This applies to the data flow from the measurement server to the monitor (for example measurement signal data) and the data flow from the monitor to a measurement server (for example to feed data to a recorder module).

Integrated communication hubs in the monitor and the FMS allow flexible cabling options (star topology, daisy chaining of servers).

Monitor Theory of Operation 2 Theory of Operation

MDSE Internal LAN

MDSE

Internal

LAN

Philips Clinical Network

The monitoring system may be connected to the Philips Clinical Network, for example to provide central monitoring capabilities or other network services. This connection may be through a normal wired connection or through a wireless connection.

The monitor supports the connection of an external off-the-shelf wireless adapter. This allows a simple field upgrade as well as a technology upgrade in the future. Switching between wired and wireless networks is automatically triggered by the plugging or unplugging of the network cable.

The Philips Clinical Network protocols function very similarly to the protocols used on the internal LAN.

MDSE

Internal

LAN

After configuration, the monitoring system sends the digitized patient signals including wave data, numerical data and status information onto the network. Control data representing user interactions can be exchanged between the monitoring system and a central station bi-directionally.

Additional protocols are supported for networked applications, for example for the other bed overview function, which allows viewing of monitoring data from other patients on the network.

For plug and play operation, the monitoring system uses the standard BootP protocol to automatically acquire a network address.

How does the Support Tool Work with the Monitor

The support tool is a Windows application typically installed on the laptop of a customer engineer or a biomedical engineer working in the customer’s own service department.

The purpose of the support tool is to upgrade, configure and diagnose all monitoring components (modules, measurement servers, and monitors) in the system over the network.

2 Theory of Operation Monitor Theory of Operation

The service protocol developed for this purpose uses a raw access to the devices without the need for IP addresses etc. over a standard customer network installation, so that even defective devices can be upgraded as long as the few kBytes of initial boot code are working. The boot code itself can also be upgraded using the same protocol.

The tool allows access to internal service information and to serial numbers. It can be remotecontrolled, for example via a dial-up connection from a response center, provided the proper infrastructure is in place.

For details see the Instructions for Use for the Support Tool.

Monitor Software Block Diagram

Figure 3 shows the functional block diagram for the monitoring system. A legend explaining terms and diagram elements follows. The information below varies depending on the purchased monitor options.

Monitor Theory of Operation 2 Theory of Operation

Philips Clinical

Network

LAN

MDSE

Input Devices

(including PS/2)

Remote Extension

Device M8026A

SpeedPoint

(LAN, Centronics, Display Controller, HIF Control,RS-422, PS/2, Remote Device I/F, Nurse Call, MIB)

Applications

System Services

Real Time Operating System

Visual

Indicators

Remote Alarm Device

LEDs

Indicators

M8025A

Loudspeaker

Audio

Video Out

Centronics

Input Devices

(PS/2)

Nurse

MIB

Call

Printer Connection

Interfaces

Interface Managers

Record Alarm Trend HiRes ADT

Reports

Calc Param

Events

ECG-Out Marker-In

ECG-Out

Marker-In

Loudspeaker

MDSE

LAN

RS-422

M3001A MultiMeasurement Server

12-lead ECG/Resp, NBP, SpO2,

Press/Temp

M3015/16A Measurement Server

Extension

CO2, Press/Temp

M1006B Press

Plug-In Modules

M1012A C.O.

LAN RS-422

M1018A tcPO2/CO2

M1029A Temp

RS-422

Flexible Module Server

M1032A VueLink

M1116B Recorder

Figure 3 IntelliVue Patient Monitoring System Functional Block Diagram

2 Theory of Operation Monitor Theory of Operation

Block Diagram Legend

Functional Block Description

Services

Operating System The Operating System (OS) provides a layer of isolation between

the specific hardware implementation and the application software. The OS performs system checks and allocates resources to ensure safe operation when the system is first started. This includes internal self-tests on several hardware modules and configuration checks for validity of configuration with the operating software. During normal operation, the OS continues to run checks on system integrity. If error conditions are detected the OS will halt monitoring operations and inform the operator about the error condition.

System Services The System Services provide generic common system services.

In particular: It uses a real-time clock component to track time. It synchronizes to network time sources and verifies the accuracy of the system time information. It is also responsible for managing persistent user configuration data for all Measurement Servers, Flexible Module Servers and IntelliVue Patient Monitoring System software modules. User configuration data is stored in a nonvolatile read/write storage device

Applications

Reports The Reports Service retrieves current and stored physiological

data and status data to format reports for printing paper documentation. The following reports are supported:

•Vital Signs Report

• Graphical Trend Report

• Event Review Report

•Event Episode Report

• ECG Report (12 Lead/Multi-Lead)

• Cardiac Output Report

• Calculations Report (Hemodynamic/Oxygenation/ Ventilation)

• Calculations Review Report

•Wedge Report

•Test Report

• Other reports (e.g. Loops, Review Applications, Drug report)

The Reports service generates report data which can be printed on a local or a central printer.

Monitor Theory of Operation 2 Theory of Operation

Functional Block Description

Record The Record Service retrieves current and stored physiological

data and status data to format a continuous strip recording. A recording can be triggered manually by the operator or automatically by an alarm condition. The Record Service uses the services of the Recorder Interface to control an M1116B Recorder in the FMS. The Record Service can also send data to a central recorder.

Alarm The Alarm Service contains logic that prioritizes alarm conditions

that are generated either by the Measurement Servers, Flexible Module Server, or by IntelliVue Patient Monitoring System software modules. Visual alarm messages are displayed at the top of the IntelliVue Patient Monitoring System display and alarm sounds are generated by a loudspeaker. Alarm conditions may be generated when a physiological parameter exceeds preselected alarm limits or when a physiological parameter or any other software module reports an inoperative status (technical alarm, for example, the ECG leads may have fallen off the patient). The Alarm service manages the alarm inactivation states, for example suspension of alarms, silencing of alarms, and alarm reminder. Alarm signals may also be configured as latching (alarm signals are issued until they are acknowledged by the operator, even when the alarm condition is no longer true). The Alarm service controls the visual alarm signals (alarm lamps).

Trend The Trend service stores the sample values of physiological data

and status data with a resolution of 12 seconds, 1 minute or 5 minutes for a period of up to 48 hours. The data is kept in battery buffered read/write storage and flash memory devices to be preserved across power failures. The stored data is protected via consistency checks and checksums. When a new patient is admitted, the trend database erases all data of the previous patient.

HiRes The OxyCRG (Oxygen CardioRespiroGram) service derives a

high-resolution trend graph from the Beat-to-Beat Heart Rate, SpO

or tcpO2, and Respiration physiological data. The

OxyCRG is specialized for neonatal applications, allowing the opeartor to identify sudden drops in Heart Rate (Bradycardia) and SpO

or tcpO2 (Desaturations), and supporting the operator

in visualizing Apnea situations.

ADT The ADT (Admit/Discharge/Transmit) service maintains the

patient demographics information. The operator may admit a new patient, discharge the old patient and enter or modify the patient demographics. The ADT service also supports the transport of a patient (trend database) with the M3001A MultiMeasurement Server. The ADT service controls the deletion of old patient data, the upload of trend data from the M3001A and the switching back of all settings to user defaults. It also synchronizes patient information with a central station on the network.

2 Theory of Operation Monitor Theory of Operation

Functional Block Description

Calc Param The Calc Param (Calculated Parameters) service accesses current,

stored and manually entered physiological data as input to calculation formulas. With these formulas, derived hemodynamic, oxygenation and ventilation variables are computed. The calculation results, including the input parameters, are stored for later review using the Trend service.

Interface Managers

MDSE The MDSE (Medical Data Service Element) Interface Manager is

responsible for the exchange of real-time data between the IntelliVue Patient Monitoring System display unit and the Measurement Servers and Flexible Module Server as well as between the IntelliVue Patient Monitoring System display unit and other devices attached to the network. MDSE establishes and maintains a data communication link between the devices. It provides configuration information about the remote device to applications in the local device and it allows the exchange of measurement data and status information between the devices.

Printer The Printer Interface Manager provides a high level interface to a

printer. It provides means to:

• establish a connection to the printer

• transfer data to the printer

• get status of the printer

• close connection to the printer

The Printer Interface Manager also supervises the connection to the printer and whether the printer accepts data (for example paper out). The Printer Interface Manager notifies the operator in such cases.

Monitor Theory of Operation 2 Theory of Operation

Functional Block Description

Display & Operator Interface The Display and Operator Interface Manager performs the

following tasks:

• Screen presentation of real-time and stored physiological measurement data, alarm condition data and status information received from the MDSE interface manager, the Alarm service or other IntelliVue Patient Monitoring System modules

• Screen presentation of operating controls (control windows)

• Processing of operating control commands received from HIF Control interface. The module verifies and interprets the received commands and forwards them to other software modules of the IntelliVue Patient Monitoring System display unit, Measurement Servers or Flexible Module Server

• Sound generation (issues audible alarm signals and generates audible information signals, for example QRS and SpO

Interfaces

LAN The LAN interface implements the physical layer of IEEE 802.3.

The LAN interface performs Manchester encoding/decoding, receive clock recovery, transmit pulse shaping, jabber, link integrity testing, reverse polarity detection/correction, electrical isolation, and ESD protection. Electronically separated interfaces are used for communication to the Measurement Servers or Flexible Module Server and to the network.

Centronics The Centronics interface implements the standard signaling

method for bi-directional parallel peripheral devices according to IEEE 1284-I. The interface is used as a parallel interface to a standard printer with electrical isolation and ESD protection.

Display Controller The Display Controller Interface consists of a video controller

chip, video RAM and the controlling software. The Display Controller interface processes the high level display commands (character and graphic generation, wave drawing) and translates them into pixels, which are written into the video RAM where the video controller chip generates the video synchronization signals and the pixel stream for the external display.

HIF Control The HIF (Human Interface Control) interface scans the Human

Interface devices for operator controls (Touch Screen, Trim Knob, and PS/2 devices), formats the collected data and sends it to the display and Operating Interface.

tones, operator audible feedback)

2 Theory of Operation Monitor Theory of Operation

Functional Block Description

ECG-Out Marker-In The ECG Out/Marker In interface receives the ECG waveform

directly from the ECG/Resp Arrhythmia ST-Segment physiological algorithm via an RS-422 serial interface and converts the digital ECG signal to an analog ECG signal. In addition, the ECG Out controller receives from a connected device the marker information and forwards this data to the ECG/Resp Arrhythmia ST-Segment physiological algorithm. The converted analog signal is used to synchronize a connected device to the patient’s ECG

RS-422 The serial link RS-422 interface communicates the ECG signal

to the ECG Output/Marker In of the IntelliVue Patient Monitoring System display unit. The interface is a serial, differential, full-duplex link. The interface is ESD protected.

PS/2 The PS/2 interface supports the serial protocol of standard PS/2

devices (mouse). The PS/2 serial protocol is interpreted by the HIF Control interface.

Remote Device Interface The remote device interface is an interface to the remote alarm

device and the remote extension device. The interface communicates with the remote devices via a differential serial link.

Nurse Call The Nurse Call board contains 2 connectors. A phone jack type

connector and a multi-port connector. The phone jack type connector has a single close-on-alarm relay. The multi-port connector has three alarm relays which are configurable to be open or closed on alarm. In addition, this interface has an audible alert capability for loss of AC power.

MIB The MIB interface allows full-duplex, short-haul asynchronous

binary communication between the monitor and an arbitrary (medical/non-medical) device using an eight-pin RJ45 modular connector. Switching between MIB and RS232 protocol is possible.

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