3770 and 3775 Oximeter Users Manual

3770/3775 Oximeter User’s Manual

Important This manual is subject to periodic review, update, and revision. Customers are cautioned to verify that the information in this manual applies to the software and hardware present in the equipment. Attention! Consult the accompanying instructions before using this device. This device performs as described in this manual, and in accompanying labels and inserts, when assembled, operated, maintained, and repaired in accordance with the instructions provided. This device must be cleaned and checked periodically. Do not use a defective device. Parts that are broken, missing, plainly worn, distorted, or contaminated should be replaced immediately. If repair or replacement becomes necessary, request service advice from Datex-Ohmeda (information is listed on the back cover). Do not repair this device or any of its parts other than in accordance with written instructions provided by Datex-Ohmeda. The user of this device shall have the sole responsibility for any malfunction that results from improper use, faulty maintenance, improper repair, unauthorized service, damage, or alteration by anyone other than Datex-Ohmeda. The safety, reliability, and performance of this device can be assured only under the following conditions: •

If it is used according to the accompanying operating instructions.

•

If fittings, extensions, readjustment, changes, or repairs are carried out by agents authorized by Datex-Ohmeda.

•

(Battery charger) If it is used in buildings that have ground equalization wiring that complies with relevant IEC or local standards and regulations.

Trademarks Datex® and Ohmeda® are the property of Instrumentarium Corp. or its subsidiaries. FlexConnect is a trademark of Datex-Ohmeda, Inc. Cidex is a trademark of Duracell, Inc. Duracell is a trademark of Eveready Battery Company, Inc. Formula 409 is a registered trademark of Clorox Company. Hewlett-Packard and HP are registered trademaris of Hewlett-Packard Co. Kodak is a trademark of Eastman Kodak Company. Panasonic is a trademark of Panasonic Industries, Co. Rayovac and Renewal are registered trademarks and Reusable Alkaline is a trademark of Rayovac Corporation. Top Crest is a trademark of Safeway, Inc. Windex is a registered trademark of The Drackett Company. All other product and company names are the property of their respective owners.

Text revised: April 2000 © 1995, 1999, 2000 Datex-Ohmeda, Inc. All rights reserved.

Table of Contents 1/Overview Product description...1-1 Accessories...1-2 Standard...1-2 Optional...1-2 Theory of operation ...1-3 Calibration...1-4 Front panel...1-5 3775-Audible indicators...1-8 Top panel-oximeter...1-8 Battery pack ...1-9 Oximeter-inside panel ...1-10 Precautions...1-10 Warnings ...1-10 Cautions...1-13 Symbol definitions...1-14

2/Operations Preparing for use ...2-1 Checking normal operation...2-3 Data validity and signal strength...2-4 Pleth bar...2-4 Signal strength indicator...2-5 Pulse rate...2-5 PROBE? message ...2-5 (3775 only) SETUP and operational modes...2-6 SETUP menu...2-6 Set the time and date...2-7 Change the language setting ...2-7 Select the SpO2 averaging interval...2-7 Print mode...2-7 Monitor mode...2-8 Change the pulse rate volume or alarm volume setting...2-8 View or change the current SpO2 alarm limits ...2-8

3/Maintenance, Troubleshooting, and Service Cleaning the oximeter...3-1 Messages and troubleshooting...3-2 Messages ...3-2 Troubleshooting...3-3 Service...3-5 Obtaining service ...3-5 Packaging and return procedure ...3-5 Parts list...3-6

i

Table of Contents Appendix A/Specifications Electromagnetic effects... A-1 Environment...A-1 EMC performance...A-1 Oximeter... A-2 General ...A-2 Dimensions ...A-2 Power ...A-2 Circuitry ...A-2 Visual displays and indicators ...A-2 Sensor emitter wavelength ranges...A-2 (3775 only) Audio indicators...A-2 SpO2 ...A-3 Range ...A-3 Accuracy (± 1 Standard Deviation)-Fractional calibration ...A-3 Interfering substances...A-3 (3775 only) Alarm limits...A-3 Pulse rate...A-3 Environmental...A-3 Operating...A-3 Storage...A-3 International Electrotechnical Commission classifications...A-4 Battery packs ... A-4 LR6(AA) battery pack...A-4 Recommended brands ...A-4 NiCd rechargeable battery pack ...A-5 Environmental-NiCd and LR6(AA)...A-5 Operating...A-5 Storage...A-5 Battery charger ... A-6 General ...A-6 Dimensions ...A-6 Power ...A-6 Fuses...A-6 Current leakage (with power on)...A-6 Environmental...A-6 Operating...A-6 Storage...A-6 International Electrotechnical Commission classifications...A-6 Printer... A-7 Electromagnetic effects ...A-7 Environment...A-7 EMC performance ...A-7 General ...A-7 Dimensions ...A-7 Power ...A-7 Environmental...A-8 Operating...A-8 Storage...A-8 International Electrotechnical Commission classifications...A-8

ii

Table of Contents Appendix B/Battery Charger and Battery Packs Overview...B-1 Battery charger ...B-2 Voltage setting ...B-3 Replacing fuses...B-4 Powering the oximeter ...B-4 NiCd battery packs...B-5 Recharging NiCd battery packs...B-5 Conditioning NiCd battery packs...B-6 Recycling NiCd battery packs...B-6 Replacing batteries in the LR6(AA) battery pack...B-7 Cleaning ...B-7 Service...B-7

Appendix C/Printer Features ... C-1 Using the printer... C-2 Powering the printer ...C-2 Printing data...C-3 Operating information... C-3 Controlling the print head ...C-3 Incorrect or missing characters...C-4 Trend data ...C-4 Erasing stored data...C-4 Numerical and graphical formats...C-5 Graphical format only ...C-6 Numerical format only...C-6 Replacing the printer paper... C-7 Cleaning ... C-8 Service... C-8

Index Warranty

iii

List of Figures Description

Page

Figure 1-1. Quick Reference label...1-2 Figure 1-2. Signal composite...1-3 Figure 1-3. Extinction vs. wavelength ...1-3 Figure 1-4. Oximeter’s front panel...1-5 Figure 1-5. Main display...1-6 Figure 1-6. Signal strength indicators...1-6 Figure 1-7. Menu select wheel and selector ...1-7 Figure 1-8. Top panel...1-8 Figure 1-9. Battery pack...1-9 Figure 1-10. Oximeter’s inside panel...1-10 Figure 2-1. Releasing the battery pack...2-2 Figure 2-2. Installing a battery pack ...2-2 Figure 2-3. Main display...2-3 Figure 2-4. Setup menu...2-6 Figure 2-5 Monitor mode display...2-8 Figure 2-6. Pulse beep and alarm volume menus ...2-8 Figure 2-7. Low- and high-SpO2 limits...2-8 Figure A-1. LR6(AA) battery life cycles ...A-4 Figure B-1. Battery charger ...B--2 Figure B-2. Opening the power module cover...B--3 Figure B-3. Voltage drum and fuse/fuse drawer locations...B--3 Figure B-4. Voltage selection drum position...B--4 Figure B-5. Inserting the battery pack in the charger-top view...B--5 Figure C-1. Printer controls ...C-1 Figure C-2. Positioning the oximeter and the printer for printing...C-3 Figure C-3. Trend data printouts...C-5

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1/Overview This chapter contains: •

A brief description of the 3770/3775 Oximetry System

•

A list of the accessories available, both standard and optional, for your oximeter.

•

The 3770/3775 theory of operation and features.

•

A list of the precautions you must take when using this device.

•

A list of symbols used on the oximeter, battery packs, and Datex-Ohmeda battery charger.

Product description Two models of the oximeter are available: The 3770 and the 3775. Both oximeters are small, lightweight, portable units that operate on power supplied by a battery pack. In addition, either oximeter, when a nickel-cadmium (NiCd) battery pack is attached, can be positioned in the Datex-Ohmeda battery charger and operated using the charger’s DC (from AC mains) power supply. The 3770 model is designed specifically for spot checking SpO2 and pulse rate. It has no alarms or user-definable parameters and is not intended for continuous monitoring. The 3775 is a full-featured model designed for spot checking in addition to shortand long-term continuous SpO2 and pulse rate monitoring. This model can print trend data it has stored in memory, via an infrared link, to the optional HewlettPackard® (HP) printer. The oximeters are designed to be used in the following environments:

Hospital

Nonhospital

• Emergency room

• Emergency medical services (ground and air)

• General ward/floor • Operating room • ICU/CCU/wards • Pulmonary rehabilitation • Stress/exercise testing

• Home health care • Physician’s office • IV sedation sites (podiatry, dentistry, plastic surgery)

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3770/3775 User’s Manual

Accessories You can order standard and optional accessories. A list, including part numbers, is at the end of chapter 3.

Standard Battery pack You receive a battery pack (NiCd or l.5 V LR6[AA]) with each oximeter. Always charge a new NiCd battery pack in the battery charger before using it for the first time.

3775 only-Quick Reference labels With each 3775 you received quick-reference labels for each of the available language selections. Place the appropriate label on the back of the battery pack.

Figure 1-1. Quick Reference label

Unit carrying case The oximeter also comes with its own carrying case.

Sensor You received the type and quantity specified when you ordered your oximeter.

Optional Battery charger The charger has two slots for recharging the NiCd battery pack, either alone or when installed on the oximeter. You can also use the battery charger to supply power to the oximeter with a NiCd battery pack for long-term monitoring (the battery pack is being recharged at the same time). See Appendix B for complete battery pack and charger information.

Printer The HP printer comes with a roll of paper and an AC adapter for accessing power for the printer; see Appendix C for complete printer information.

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1/Overview

System carrying case Use this case to carry oximeters, printers, extra battery packs, and/or a battery charger when necessary.

Theory of operation The oximeter uses a patented, two-wavelength pulsatile system-red and infrared light-to distinguish between oxygenated hemoglobin (O2Hb) and reduced hemoglobin (HHb), each of which absorbs different amounts of light emitted from the oximeter sensor. The system then calculates the relative percentage of these two constituents and SpO2. Variable absorption (Due to arterial pulse) Arterial blood absorption Absorption

Venous blood absorption

Other tissue absorption

Time Figure 1-2. Comparative light absorption Arterial blood pulsation at the test site modulates the oximeter sensor’s light emission. Since other fluids and tissues present generally don’t pulsate, they don’t modulate the light passing through that location. The attenuation of light energy due to arterial blood flow is detected and isolated by using the pulsatile portion of the incoming signal. 1

(Red)

(Infrared)

Extinction (10x)

660 nm

940 nm

0

O2Hb -1 HHb

-2 600

700

800

900

1000

Wavelength (nm) Figure 1-3. Extinction versus wavelength graph

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3770/3775 User’s Manual

The sensor’s photodetector converts the light, which is partially absorbed and modulated as it passes through the tissue sample, into an electronic signal. Since O2Hb and HHb allow different amounts of light to reach the photodetector at the selected wavelengths, the electronic signal varies according to the light source that is “on” and the oxygenation of the arterial hemoglobin. Analog and digital signal processing then converts the light-intensity information into SpO2 and pulse rate values for display on the monitor.

Calibration Datex-Ohmeda pulse oximeters use two wavelengths ranges, 650 nm - 665 nm and 930 nm - 950 nm, both with an average power of less than 1 mW. These wavelengths are used to calculate the presence of O2Hb and reduced HHb. A CO-oximeter typically uses four or more wavelengths of light and calculates reduced hemoglobin (HHb), oxyhemoglobin (O2Hb), carboxyhemoglobin (COHb), and methemoglobin (MetHb). Because of this, pulse oximetry readings will be different than CO-oximetry readings in situations where a patient’s COHb or MetHb are increased. Two different methods of calibration are currently used by manufacturers: fractional and functional. •

In fractional mode, the fractional saturation is determined by dividing the oxyhemoglobin by the total hemoglobin, represented mathematically as Fractional SpO2 =

O2Hb HbTOTAL

x 100 =

O2Hb O2Hb + HHb + COHb + MetHb

x 100

i.e., the percentage of the total amount of hemoglobin carrying oxygen •

In functional mode the functional saturation is represented mathematically as. Functional SpO2 =

O2Hb HbTOTAL - COHb - MetHb

x 100 =

O2Hb O2Hb + HHb

x 100

i.e., the percentage of hemoglobin capable of carrying oxygen that is carrying oxygen. The calculation of SpO2 assumes 1.6% carboxyhemoglobin (COHb), 0.4% methemoglobin (MetHb), and no other pigments. Appreciable variation from these values will influence SpO2 accuracy. These values are based on the DatexOhmeda Pulse Oximeter Empirical Calibration Study. The 3770/3775 uses the fractional calibration method.

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1/Overview

Front panel 2

2

1

1

1 Power on/off button ♥

%SpO2

%SpO2

98

72

3

98

♥

72

4

3

3 Main display 4

5

4 Pleth bar display

5

5 Low battery indicator

6

6 Signal strength indicator

6

7

2 FlexConnect™ connector for the sensor

7 Alarm indicator/ alarm silence bar (3775 only) Not for continuous monitoring.

8

9

8 Menu select wheel (3775 only) 9 Warning label (3770 only)

Figure 1-4. Oximeter’s front panel 1

You press this button to turn the oximeter on or off. Notes: •

3770-If no data are received for two minutes, the unit will go into powersaving mode automatically. We recommend, however, turning the unit off whenever it is not in use.

•

3775-This unit never goes into power-saving mode. If no data are received for two minutes; the alarm sounds until you press the alarm silence bar or reattach the sensor. Stored data are retained in the 3775 when you power the unit off as long as the battery pack is charged.

2

You insert the sensor cable connector in this receptacle, called the FlexConnect sensor connector.

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3770/3775 User’s Manual

3

This set of LEDs is the main display. The SpO2 value and pulse rate appear here during monitor mode. 3775-ALL MUTE and other messages appear as appropriate. When you are accessing other modes or changing settings (Setup mode), the menu names and settings appear in this main display area.

9 8

7 2

Monitor mode

SETUP

Setup mode

P ROB E ?

Message

Figure 1-5. Main display 4

This column of LEDs-the pleth bar-provides a visual representation of the plethysmographic waveform by lighting in a pattern that emulates a waveform. The highest LED lit on the pleth bar is the leading edge of the waveform. The LEDs trace the outline of the same pleth data found on larger Datex-Ohmeda oximeters. The height of the lighted LEDs is not proportional to pulse volume.

5

This indicator light begins flashing once every three seconds when the battery pack has approximately 15 minutes of power remaining (or up to two hours for some LR6[AA] batteries). The amount of battery time left depends on the usage at the time. It continues to flash until the battery pack is replaced with a new, fully charged pack, or with new LR6(AA) batteries, or until the pack has no power left, at which point the unit shuts off. A low-battery condition does not activate an audible alarm. orange

6

This set of indicators provides signal strength information; see “Data validity and signal strength” in chapter 2 for more information. green yellow orange amber Good

Adequate

Marginal

Low

Figure 1-6. Signal strength indicators.

1-6

•

The top indicator is green and the second is yellow; if either is lit, signal strength is good to adequate.

•

The third indicator is orange; if it is lit, signal strength is marginal. Make sure the sensor is well located and fully secure on the patient and on the oximeter.

•

The bottom indicator is amber; if it is lit, signal strength is poor and the values displayed may be affected by signal noise. Check the sensor site and make sure there is no source of interference (electronic, light).

1/Overview

7

3775-During an alarm condition this bar flashes red and an alarm sounds up to 12 seconds later. Pressing the bar silences the audible alarm (ALL MUTE) for two minutes; the bar continues to flash until the alarm condition is corrected.

Note: The audible alarm feature for all alarm conditions is silenced for the first two minutes after powering on . 8

The menu select wheel

98

72

1

2

OFF

LoSP= 8 5

ON

HiSP=OFF

1 Menu select wheel 2 Selector 3 “Bull’s eye”

PRINT

SETUP 3

Figure 1-7. Menu select wheel and selector To access the 3775 oximeter’s available menus, you press the “bull’s eye” (3) on the selector (2) and then rotate the menu select wheel (1) clockwise (increase the setting) or counterclockwise (decrease the setting). A menu’s title or graphic appears on the main display when the wheel is in that menu’s position. When you reach the menu you want, you press select that menu.

(in the center of the wheel) to

Next, you rotate the menu wheel to the setting you want to change and press ; that setting flashes. Then you rotate the wheel to the choice you want to make for that setting and, to confirm it, you press again; the setting now stops flashing. It’s visual-watch the main display; it’s easy-rotate and press. Important: The steps in this manual do not repeat these instructions in full. A step might be, “Access and select the alarm volume menu.” This means • To access the menus, press

.

• Turn the wheel until you see the alarm volume menu graphic on the main display. • Press

.

After you’ve made your final change, SpO2 and pulse rate information return automatically to the main display within three seconds. 9

3770 only-Not for continuous monitoring. Use the 3770 oximeter only for spotchecking SpO2 and pulse rate.

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3770/3775 User’s Manual

3775-Audible indicators Alarm conditions and the patient’s pulse rate activate sounds. •

You can set the alarm volume to on (the default) or off. To minimize a “nuisance alarm” situation, the alarm does not begin sounding until 12 seconds after the main display and the alarm bar indicate an alarm condition. If you choose to have the audible alarms off, the visual alarm continues to flash and ALL MUTE appears briefly in the main display every three seconds. Note: A system failure alarm (SERVICE) sounds even when the alarm volume is set to Off.

•

You can set the pulse beep volume to be on or off (the default). The pitch of the pulse rate tone corresponds to the SpO2 saturation level. In other words, the higher the SpO2, the higher the tone’s pitch, and vice versa

An audible alarm is activated for •

High- or low-SpO2 limit violations. These alarm conditions sound the tone at intervals until the condition no longer exists.

•

Sensor error conditions, such as when the sensor is not connected to the patient or the oximeter, or is one that is not intended for use with the 3775 oximeter (PROBE?). These alarm conditions sound the tone at intervals until the condition no longer exists or the audible alarm is silenced.

•

System or sensor failure conditions (SERVICE). These alarms sound a continuous tone and the alarm indicator bar is continuously illuminated.

You can press the alarm silence bar to silence audible alarms for two minutes-the alarm indicator bar continues to flash. (You will hear a tone when you have applied enough pressure to the bar-anywhere along its length-to activate alarm silence.) After two minutes, the audible alarm reactivates if the alarm condition persists or if a new alarm condition has occurred. Note: You cannot silence a SERVICE alarm. For more information, see chapter 3.

Top panel-oximeter 1 FlexConnect sensor connector. You insert the cable connector on the Datex-Ohmeda sensor you’re using into this connector. 1

Figure 1-8. Top panel

1-8

2

2 3775-Infrared transmitter. This infrared transmitter, when aligned properly with the optional HP printer’s infrared receiver, transmits the trend data stored in the oximeter’s memory to the printer.

1/Overview

Battery pack For complete definitions of the symbols shown on the labels, see “Symbol definitions” later in this chapter.

5

1 Release latch

Ni-Cd

2 (NiCd battery pack only) recharging contacts 3 Quick Reference label location

3

4 Battery check button (above LED) 5 LR6 (AA) battery compartment access door

2

4

1

Figure 1-9. Battery pack Two battery packs are available: •

1.5 V LR6(AA) Bat. A pack that houses six replaceable 1.5 V LR6(AA) batteries. Open only the battery compartment door to replace the batteries.

•

9.6 V NiCd Bat. A sealed, rechargeable pack that contains eight nickelcadmium (NiCd) batteries.

WARNING: Electric shock hazard. Do not attempt to open the NiCd battery pack. Do not attempt to repair it. Refer servicing to qualified service personnel. 1

Use this latch to release the battery pack from the oximeter.

2

The Datex-Ohmeda battery charger uses these contacts when recharging the NiCd battery pack. There are no charger contacts on the 1.5 V LR6(AA) battery pack.

3

3775-You received several quick-reference labels-one for each language available on the oximeter. Each shows the menus and their options as they will appear in the main display. Apply the appropriate language label to your battery pack here.

4

Press on this check switch to verify that the battery pack is charged. If the window is

5

•

Red, the battery pack needs recharging.

•

Green, the pack is sufficiently charged for use.

This door provides access to the 1.5 V LR6(AA) battery compartment on that type of pack; see Appendix B for battery replacement.

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3770/3775 User’s Manual

Oximeter-inside panel For complete definitions of the symbols shown on the labels, see “Symbol definitions” later in this chapter.

This blank label protects the service access connector, which is for service use only.

Figure 1-10. Oximeter’s inside panel

Precautions Two types of precautions appear in this manual: warnings and cautions. •

A WARNING indicates a potentially harmful situation that may cause injury to a patient or operator.

•

A CAUTION indicates a condition that may lead to equipment damage or malfunction.

Read this section fully and carefully before using the oximeter and its accessories for patient monitoring.

Warnings Failure of operation If the oximeter fails to respond as described in the “Checking normal operation” section in chapter 2, do not use it until qualified personnel have corrected the situation or the unit has been serviced. It is possible for any device to malfunction; therefore, always verify unusual data by performing a formal patient assessment.

Data validity Interfering substances, excessive ambient light, excessive motion, low perfusion, low signal strength, incorrect sensor placement, or electrical interference at the sensor site can result in the display of inaccurate SpO2 data. To prevent erroneous readings, do not use an inflated blood pressure cuff or arterial blood pressure measurement device on the same limb as the oximeter sensor.

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1/Overview

Patient safety Never test or perform maintenance on the oximeter while it is being used to monitor a patient. When the unit is operating on battery power and the battery becomes depleted, be aware that no alarm tone sounds when the unit shuts off. The correct use of the oximeter is to measure only arterial oxygen saturation (SpO2) and pulse rate. •

A pulse oximeter does not measure respiration and should never be used as a substitute for an apnea monitor or as the primary monitor for infants being monitored for apnea

•

A pulse oximeter may be used during sleep studies with adults only to gather information regarding SpO2 and pulse rate.

This device is not intended for use in a magnetic resonance imaging (MRI) environment.

Patient safety (sensors) Prolonged monitoring or patient condition may require you to periodically change the sensor site. If there is evidence of blistering, skin erosion, or ischemic skin necrosis (such as skin discoloration or reddening), change the site immediately. Otherwise, change the site as specified in the instructions for the sensor. Discard a damaged sensor immediately. Do not repair a damaged sensor or use a sensor repaired by others. To prevent patient injury or equipment damage, use only Datex-Ohmeda sensors approved for use with this oximeter. For complete information about the safe and appropriate use of a sensor, consult the instructions for that sensor.

Patient safety (printer)

2.5 m (8.2 ft)

Do not use the HP printer in the patient environment as defined in this illustration.

1.5 m (5 ft)

1.5

m

(5

ft)

1.5 m (5 ft)

Operator safety Do not handle hot or leaking battery packs or batteries.

Fire hazard To protect against fire hazard, replace the fuses in the battery charger only with fuses of the same type and local line voltage rating.

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3770/3775 User’s Manual

Explosion hazard Do not use the oximeter, the printer, or the battery charger in the presence of flammable anesthetics or other flammable substances in combination with air, oxygen-enriched environment, or nitrous oxide. Use only a 3770/3775 battery pack as part of the oximeter. Cadmium is a hazardous substance. Do not incinerate or burn the NiCd battery pack. Do not dispose of a NiCd battery pack by throwing it in the trash. Dispose of a battery pack through an approved hazardous material disposal facility or by returning it to Datex-Ohmeda for reclamation. Do not attempt to recharge or condition a NiCd battery pack using any device other than a Datex-Ohmeda battery charger. Do not attempt to recharge or condition any NiCd battery pack other than those made by Datex-Ohmeda in a Datex-Ohmeda battery charger. Do not expose a battery pack to any temperature that is hotter than you can tolerate to touch.

Electrical shock and flammability hazard Before cleaning or servicing the oximeter, always turn it off. Before cleaning or servicing the battery charger or printer, always turn it off and disconnect the power cord from the AC mains power supply.

Electrical shock hazard Do not attempt to open the oximeter, the NiCd battery pack, the printer, or the battery charger except by opening the access door to replace the LR6(AA) batteries in the LR6(AA) battery pack or in the HP printer. Do not attempt any repairs. Refer servicing to qualified service personnel who are trained in the repair of this equipment. The battery charger must be properly grounded. •

Connect this equipment only to a three-wire, grounded, hospital-grade receptacle. The three-connector plug must be inserted into a properly wired three-wire receptacle; if a three-wire receptacle is not available, a qualified electrician must install one in accordance with the governing electrical code.

•

Do not under any circumstances remove the grounding connector from the power plug.

•

Do not use extension cords or adapters of any type. The power cord and plug must be intact and undamaged.

Handling Handle the oximeter and its accessories with care. Improper handling can cause damage or inaccurate operation of these devices.

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1/Overview

Cautions US federal and Canadian law restrict this device to sale by or on the order of a licensed medical practitioner. Since printed trend data include the current date and time, to avoid any possibility of confusion do not change the date and/or time settings while collecting patient trend data. To prevent battery-pack damage, •

Never attempt to take a battery pack apart; access only the battery compartment for replacing batteries in the LR6(AA) battery pack.

•

Do not put a battery pack where it can be short-circuited by contact with metal objects, such as in a pocket with keys.

•

Use only LR6(AA) batteries recommended by Datex-Ohmeda in the LR6(AA) battery pack.

Service diagnostic mode is to be used by Datex-Ohmeda service personnel only.

HP printer To avoid damage to the printer, use only an AC adapter recommended by and available from Datex-Ohmeda.

Cleaning Do not autoclave, pressure sterilize, or gas sterilize the oximeter, the printer, the battery pack, or the battery charger. Use the cleaning solution sparingly. Do not immerse the oximeter, the battery pack, the printer, or the battery charger in liquid. Excessive solution can flow into the device and cause damage to internal components. When cleaning the display lens, do not use abrasive cleaning compounds or other materials that could damage the lens. Do not use petroleum-based solutions or solutions containing acetone, ethanol, freon, trichloroethylene, or harsh solvents to clean the oximeter, the printer, the battery pack, the battery charger, or any protective covering on these devices. These substances attack the devices’ materials, and device failure may result. When cleaning oximeter sensors, follow all warning and caution statements provided in the sensor user instructions. Disposable sensors are intended for single-patient-use only.

Disposal When the oximeter has reached the end of its useful life, dispose of it in accordance with local procedures and regulations.

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