Respironics 950 Troubleshooting guide

English

Instruction and Service Manual

Model 950

Finger Pulse Oximeter

0459

iii

English

About the Manual

Shaded boxes draw attention to contraindications, warnings, cautions

and notes.

The boxed messages are important. Be sure to read them.

The information in this manual has been carefully checked and is

believed to be accurate. In the interest of continued product

development, RESPIRONICS, INC. reserves the right to make

changes and improvements in this manual and the products it

describes at any time, without notice or obligation.

Caution: Federal Law (USA) restricts this device to sale by or on the

order of a physician.

Respironics Georgia

175 Chastain Meadows Court

Kennesaw, Georgia 30144-3724

USA

Telephone: 1-770-499-1212

Fax: 1-770-499-0117

Customer Service Telephone: 1-800-345-6443 (USA and Canada)

Customer Service Fax: 1-800-886-0245 (USA and Canada)

www.respironics.com

Respironics Deutschland

Gewerbestrasse 17

82211 Herrsching

Germany

Telephone: 49 815 293 060

Fax: 49 815 293 0618

Respironics Asia Pacific

3/F, Microtron Building

38 Hung To Road

Kwun Tong, Kowloon, Hong Kong

Telephone: 852-2771-1886

Fax: 852-2770-7557

is a registered trademark of Respironics, Inc.

English

Table of Contents

Contraindications, Warnings, and Cautions ........................ 1

Introduction ............................................................................. 3

Description................................................................................... 3

The 950 at a Glance ..................................................................... 4

Intended Use ................................................................................ 6

Operating Instructions............................................................ 7

Getting Started ............................................................................. 7

Lanyard and Lanyard Lock.......................................................... 8

Battery Requirements .................................................................. 9

Inserting New Batteries.............................................................. 10

Activating the 950...................................................................... 11

Verifying Operation................................................................... 12

Conditions That May Affect Use ............................................... 13

Maintenance........................................................................... 14

Storage Requirements ................................................................ 14

Theory of Operation ............................................................. 16

Oximetry .................................................................................... 16

950 Averaging............................................................................ 18

Specifications ......................................................................... 19

Parts and Accessories............................................................ 20

Parts ........................................................................................... 20

Accessories ................................................................................ 20

Technical Support ...................................................................... 20

Warranty................................................................................ 21

Troubleshooting Guide ......................................................... 22

Figures

Figure 1. Top digital display illustration and bottom label. .... 4

Figure 2. Lanyard and lock. .................................................... 8

Figure 3. Inserting new batteries........................................... 10

Figure 4. Applying the 950................................................... 11

Figure 5. Maintenance choices.............................................. 15

Glossary of Symbols

SYMBOL DEFINITION OF SYMBOL

Attention, Consult ACCOMPANYING

DOCUMENTS

Type BF Applied Part:

(Patient isolation from electrical shock).

Canadian Standards Association

NRTL/C Meets both Canadian and United States

Standards.

0459

CE Marking indicating conformance to EC

directive No. 93/42/EEC concerning medical

devices.

Not for Continuous Monitoring

(No Alarm for SpO2)

English

Contraindications, Warnings, and Cautions

CONTRAINDICATIONS:

Do not use the 950 in an MRI environment.

Do not operate the 950 in an explosive atmosphere.

Do not use the 950 on infant or neonatal patients.

WARNINGS:

Batteries may leak or explode if used or disposed of improperly.

CAUTIONS:

Federal Law (USA) restricts this device to sale by or on the order

of a physician.

Read this entire manual carefully before using the Respironics 950

Pulse Oximeter.

The 950 determines the percentage of arterial oxygen saturation of

functional hemoglobin. Significant levels of dysfunctional

hemoglobin such as carboxyhemoglobin or methemoglobin may

affect the accuracy of the measurement.

Cardiogreen and other intravascular dyes, depending on the

concentration, may affect SpO2accuracy.

The 950 must be able to measure the pulse properly to obtain

accurate SpO2measurement. Verify that nothing is hindering the

pulse measurement before relying on the SpO2measurement.

Some situations that may contribute to erroneous pulse

measurement are:

•inadequate perfusion,

•excessive patient movement,

•pulse oximeter and blood pressure measurement on the

same limb, etc.

The 950 may interpret motion artifact of sufficient amplitude and

regularity as good perfusion (green).

Do not use the 950 in situations where alarms are required. The

950 has no audible alarms.

The 950 is intended for spot-checking or continuous monitoring by

an attending health care professional. Because the 950 has no

audible alarms, international labeling requirements (ISO 9919)

dictate it be labeled, “Not for continuous monitoring”.

CAUTIONS:(Continued)

Check application site periodically (at least every thirty minutes) to

determine circulation, positioning and skin sensitivity.

The 950 may not work for all patients. If you are unable to achieve

stable readings, discontinue use.

Finger nail polish may reduce light transmission and thereby affect

SpO2accuracy.

A flexible circuit connects the two halves of the 950. Do not twist or

pull on the connection.

Do not use different types of batteries at the same time. Do not mix

fully charged and partially charged cells at the same time. These

actions may cause the batteries to leak.

Batteries must be removed if the 950 is going to be stored for more

than one month or batteries may leak.

Do not immerse the 950 in liquid to clean.

English

Introduction

Description

Respironics, Inc. has integrated the finger clip sensor and the

electronics of the Respironics Model 920 hand held Pulse Oximeter

into one unit, the Model 950. The 950 is very small (1.3 inch W x 1.3

inch H x 2.2 inch L) and lightweight (2 ounces).

The 950 displays numerical values for functional arterial hemoglobin

oxygen saturation (%SpO2) in percentage and pulse rate ( ) in

beats per minute on light emitting diode (LED) digital displays.

With each detected pulse, the Perfusion Display blinks. Patient

perfusion signals are graded as good, marginal or inadequate and are

indicated as such by the perfusion indicator changing color from green

to yellow or red respectively. This sophisticated, yet simple technique

provides a pulse-by-pulse visual indication of waveform signal

quality, without requiring the user to perform complex signal analysis

during critical patient care situations.

Two AAA battery cells power the 950 and operate it for

approximately 1,600 spot checksaor 18 hours of continuous operation

between battery replacement. When the batteries are low, the digital

displays will blink once per second. (Refer to page 9 for battery

specifications and page 10 for battery replacement instructions.)

aCalculated at 40 seconds per spot check using two AAA alkaline battery

cells.

The 950 at a Glance

Figure 1. Top digital display illustration and bottom label.

%SpO2Display

Heart Rate Display

Perfusion Display

Finger Grip

Battery

Polarity

Markings

Serial

umbe

English

•%SpO2Display

Numeric LEDs display the value of percent oxygen saturation,

calculated using a four beat exponential averaging technique.

(Refer to page 16, Theory of Operation, for information on

averaging.)

•Heart Rate Display

Numeric LEDs display the pulse rate in beats per minute,

calculated by an eight beat sliding averaging technique. (Refer

to page 18 for information on averaging.)

•Perfusion Display

Provides a visual indication of the signal quality, while

blinking at the corresponding pulse rate. It is a method of

alerting the user to changes in the pulse waveform signal that

may affect the SpO2data.

Green = good signal amplitude

Yellow = artifact or marginal signal amplitude

Red = inadequate signal amplitude

CAUTION:

The 950 may interpret motion artifact of sufficient amplitude and

regularity as good perfusion (green).

•Battery Low

Numeric LEDs flash once per second when batteries are low.

Replace the batteries as soon as possible. Refer to page 10,

Inserting New Batteries.

•Finger Removal

A minus (-) sign appears in the left most digit of the %SpO2

display when the 950 senses that the finger has been removed.

The last measured SpO2and pulse rate values freeze for ten

seconds, then the displays go blank.

•The label on the bottom of the 950 lists the model number,

serial number, CAUTION statement, and battery polarity

indicators.

Intended Use

The 950 is a portable device for spot-checking or attended-care

monitoring of adult or pediatric patients. Use the 950 with finger

thickness between 0.3 to 1.0 inches. The 950 is not recommended

where motion is expected or for relatively long-term monitoring, e.g.,

greater than 30 minutes.

CONTRAINDICATION:

Do not use the 950 on infant or neonatal patients.

CAUTION:

Do not use the 950 in situations where alarms are required. The

950 has no audible alarms.

CAUTION:

It is intended for spot-checking or continuous monitoring by an

attending health care professional. Because the 950 has no audible

alarms, international labeling requirements (ISO 9919) dictate it be

labeled, “Not for continuous monitoring”.

CAUTION:

Check application site periodically (at least every thirty minutes) to

determine circulation, positioning and skin sensitivity.

CAUTION:

The 950 may not work for all patients. If unable to achieve stable

readings, discontinue use.

Table of contents

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