AccuMed CMS-50D User manual

This Manual is written and compiled in accordance with the council directive MDD 93/42/EEC
for medical devices and corresponding standards. The Manual written is in accordance with the
Fingertip Pulse Oximeter. In case of modifications and software upgrades, you will be advised in
due time with a Modification Notice.
The Manual includes the Fingertip Pulse Oximeter’s features and requirements, main structure,
functions, specifications, correct methods for transportation, installation, usage, operation, repair,
maintenance and storage, etc. as well as the safety procedures to protect both the user and
equipment. Refer to the respective chapters for details.
This manual is used for the experienced personnel who is familiar with the measure and the use of
the instrument. This manual is compiled by our company, and the copyright is possessed by our
company.
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Instructions to User
Dear Users, thank you very much for purchasing Fingertip Pulse Oximeter. Please read the
following two pages very carefully before using this equipment.
Please read these instructions carefully before using this equipment. These instructions describing
the operating procedures should be followed strictly. Failure to follow these instructions can cause
measuring abnormality, equipment damage and personal injury. The manufacturer is NOT
responsible for the safety, reliability and performance issues and any monitoring abnormality,
personal injury and equipment damage due to user’s negligence of the operation instructions. The
manufacturer’swarrantyservicedoesnotcoversuchfaults.
This product is medical device, and can be used repeatedly. Its using life is 3 years.
WARNING:
0Uncomfortable or painful feeling may appear if using the device ceaselessly, especially
for the microcirculation barrier patients. It is recommended that the sensor should not
be applied to the same finger for over 2 hours.
0For the special patients, there should be a more prudent inspecting in the placing
process. The device can not be clipped on the edema and tender tissue.
0The light (the infrared is invisible) emitted from the device is harmful to the eyes, so the
user and the maintenance man should not stare at the light.
0Testee can not use enamel or other makeup.
0Testee’s fingernail can not be too long.
0Please refer to the correlative literature about the clinical restrictions and caution.
0This device is not intended for treatment.
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III
Table of Contents
1. SAFETY...................................................................................................................................... 1
1.1. INSTRUCTIONS FOR SAFE OPERATIONS................................................................................... 1
1.2. WARNINGS............................................................................................................................. 1
1.3.ATTENTIONS........................................................................................................................... 1
2. OVERVIEW............................................................................................................................... 1
2.1. FEATURES .............................................................................................................................. 2
2.2. ANTICIPATIVE APPLICATION ................................................................................................... 2
2.3. ENVIRONMENT REQUIREMENTS............................................................................................. 2
3. PRINCIPLE AND CAUTION .................................................................................................. 3
3.1. PRINCIPLE OF MEASUREMENT................................................................................................ 3
3.2. THE ATTENTION OF OPERATION ............................................................................................. 3
3.3. CLINICAL RESTRICTIONS........................................................................................................ 4
4. TECHNICAL SPECIFICATIONS........................................................................................... 4
5. ACCESSORIES.......................................................................................................................... 5
6. INSTALLATION........................................................................................................................ 5
6.1. VIEW OF THE FRONT PANEL.................................................................................................... 5
6.2. MOUNTING OF THE BATTERY................................................................................................ 5
6.3. MOUNTING OF THE HANGING ROPE........................................................................................ 6
7. OPERATING GUIDE................................................................................................................ 6
8. CLEANINGAND DISINFECTING......................................................................................... 7
9. REPAIRINGAND MAINTENANCE...................................................................................... 7
10. TROUBLESHOOTING .......................................................................................................... 8
11. FUNCTION SPECIFICATION.............................................................................................. 8
12. KEY OF SYMBOLS ............................................................................................................... 9

1. Safety
1.1 Instructions for safe operations
0Check the main unit and all accessories periodically to make sure that there is no visible
damage that may affect patient’s safety and monitoring performance. It is recommended that
the device should be inspected once a week at least. Please stop using the monitor when there is
obvious damage.
0Necessary maintenance must be performed by qualified service engineers ONLY. Users are not
permitted to maintain it by themselves.
0The oximeter cannot be used together with devices not specified in User’s Manual. Please use
the devices recommend by Manufacturer.
1.2 Warnings
0Explosive hazard—DO NOT use the oximeter in environment with inflammable gas such as
some ignitable anesthetic agents.
0DO NOT use the oximeter while the testee is under measurement of MRI and CT.
0Be cautious of the hanging rope, please do not break the hanging rope during usage to avoid
device damage. Please don’t use hanging rope if allergic to hanging rope.
0Please don’t use this product if allergic to rubber cushion.
0Please dispose the device, accessory and packing (including plastic bag, foam and carton)
according to local law.
1.3 Attentions
Keep the oximeter away from dust, vibration, corrosive substances, explosive materials, high
temperature and moisture.
If the oximeter gets wet, please stop using.
When it is carried from cold environment to warm and humid environment, please not use it
immediately.
DO NOT operate keys on front panel with sharp materials.
High temperature or high pressure steam disinfection of the oximeter is not permitted. Refer to
User’s Manual for instructions of cleaning and disinfection.
Do not have the oximeter immerged in liquid. When it needs cleaning, please wipe its surface
with disinfect solution by soft material. Do not spray any liquid on the device directly.
When cleaning the device with water, the temperature should be less than 60℃.
2. Overview
The pulse oxygen saturation is the percentage of HbO2in the total Hb in the blood, so-called the O2
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concentration in the blood. It is an important bio-parameter for the respiration. Many of the
respiration disease will cause hypoxemia, even damage the patient’s life. As a result, monitoring the
SpO2is indispensable in the clinical rescuing. The traditional method to measure SpO2is to analyze
the sample of the patient’s blood to get the partial pressure of oxygen and calculate the SpO2 by use
the blood-gas analyzer. This method is inconvenient and discontinuous. For the purpose of
measuring the SpO2more easily and accurately, our company developed the Fingertip Pulse
Oximeter. The device can measure the pulse rate simultaneously.
The Fingertip Pulse Oximeter is tiny, and with low power consumption, convenient to use and carry.
You just need to put the fingertip into the sensor of the device, the SpO2 value will appear on the
screen immediately. In the clinical practice, the tolerance is smaller than ±2% in the range from 70%
to 100%.
2.1. Features
A. The device can accurately measure SpO2.
B. The device will power off automatically if no signal is detected within 5 seconds.
C. Two AAA size batteries are required for operating, and the continuous working time is 30
hours.
D. When Low-Voltage Warning is shown on screen, the device maybe not operate normally.
E. Light and portable, total weight with batteries is about 50g.
F. Classification: Class II a, （MDD93/42/EEC IX Rule 10）
2.2. Anticipative application
The Fingertip Pulse Oximeter can detect SpO2 and pulse rate through patient’s finger, and indicate
the pulse intensity by the bar-display. This device is applicable for use in home, hospitals (ordinary
sickroom), oxygen bar, the community medical treatment, physical care in sports (you can use the
device before or after the sport, but it is not recommended to use it during the sport) and so on.
This device is not appropriate for the ceaseless monitoring of the patients.
2.3. Environment requirements
Transport and storage
a）Temperature: -20°C~55°C
b）Humidity: ≤95%
c）Pressure: 500hPa~1060hPa
Operating
a）Temperature: 10°C ~40°C
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b）Humidity: 35%~75%
c）Pressure: 700hPa~1060hPa
3. Principle and Caution
3.1. Principle of measurement
The measurement of pulse oximeter is that it uses a multi-functional oxyhemoglobinometer to
transmit some narrow spectrum light bands through blood samples, and to measure attenuation of
spectrum with different wavelengths according to the characteristic that RHb, O2Hb, Met Hb and
COHb absorb the light of different wavelength, thereby determining O2Hb saturation of different
fractions. O2Hb saturation is called “fractional” O2Hb saturation.
Fractional O2Hb saturation = [O2Hb / (RHb + O2Hb + Met Hb + COHb) x 100
Oppositely, pulse oxygen oximeter measures functional O2Hb saturation:
Functional O2Hb saturation = [O2Hb / (RHb + O2Hb)] x 100
Present SpO2oximeter transmits light of two wavelengths only, red light (wavelength 660 nm) and
infrared (wavelength 940nm), to differentiate HbO2from HbR. One side of the sensor contains two
LEDs, and the other side contains a photoelectric detector. SpO2oximeter measures HbO2saturation
in the blood by the light plethysmograph when the pulse beats. The result is quite precise when
HbO2saturation is over 70 % ~ 100%.
Figure1. Operating Principle
3.2. The attention of Operation
A. The equipment should be fully tested to see if it can be used normally before using.
B. The finger should be placed properly (see the attached illustration of this manual), or else it
may cause inaccurate measurement.
C. The SpO2sensor and photoelectric receiving tube should be arranged in a way with the testee’s
arteriole in a position in between．
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D. The SpO2sensor should not be used at a location or limb tied with arterial canal or blood
pressure cuff or receiving intravenous injection.
E. Make sure the optical path is free from any optical obstacles like rubberized fabric, otherwise it
may result in venous pulsation and inaccurate measure of SpO2.
F. Excessive ambient light may affect the measuring result. It includes fluorescent lamp, dual ruby
light, infrared heater, direct sunlight and etc.
G. Strenuous action of the testee or extreme electrosurgical interference may also affect the
accuracy.
H. Testee can not use enamel or other makeup.
I. Please clean and disinfect the device after operating according to the user manual.
3.3. Clinical restrictions
A. As the measure is taken on the basis of arteriole pulse, substantial pulsating blood flow of the
testee is required. For a testee with weak pulse due to shock, low ambient/body temperature,
major bleeding, or use of vascular contracting drug, the SpO2waveform (PLETH) will decrease.
In this case, the measurement will be more sensitive to interference.
B. For those with a substantial amount of staining dilution drug (such as methylene blue, indigo
green and acid indigo blue), or carbon monoxide hemoglobin (COHb), or methionine (Me+Hb)
or thiosalicylic hemoglobin, and some with icterus problem, the SpO2determination by this
monitor may be inaccurate.
C. The drugs like dopamine, procaine, prilocaine, lidocaine and butacaine may also be a major
factor blamed for serious error of SpO2measure.
D. The SpO2value serves only as a reference value for judgement of anemic anoxia and toxic
anoxia, some patients with serious anemia may also report good SpO2measurement.
4. Technical specifications
A. Display mode：double Color OLED display
SpO2measuring range: 35%~100%
Pulse rate measuring range: 30bpm～240bpm
Pulse waveform display: bar graph display
Battery indication: OLED Signal
B. Power supply requirement:
1.5V (AAAsize) alkaline batteries × 2
Adaptable range: 2.6V~3.6V
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C. Operating current: ≤30mA
D. Resolution: SpO2：1%
Pulse Rate ：1bpm
E. Accuracy: SpO2：70% to 100%±2 digits, below 70% unspecified
Pulse rate：±2 bpm or ±2% (select larger)
F. Measurement at low perfusion:
The values of SpO2and pulse rate can be displayed properly when pulse saturation is at 0.4%.
Accuracy of SpO2：±4%
Accuracy of Pulse rate：±2bpm or ±2% (select larger)
G. Resistance to surrounding light:
The difference between the value measured in the condition of man-made light and indoor natural
light and that of darkroom is less than ±1%.
H. Automatic shutdown function:
The device will power off automatically within 5 seconds when there is no finger in the device.
5. Accessories
A. A hanging rope
B. Two batteries
C. A User Manual
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6. Installation
6.1. View of the front panel
Figure2. front view
6.2. Mounting Of The Battery
1. Refer to Figure 3. And insert the two AAAsize batteries properly in the right direction , according
to the “＋ “and “－”symbol.
2. Replace the cover.
Please be cautious when you insert the batteries for improper insertion may damage the
device.
Figure 3.batteries installation
6.3. Mounting of the hanging rope
Refer to Figure 4:
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Step1. Put the end of the rope through the hole.
Step2. Put another end of the rope through the first one and then tighten it.
Figure4. Mount the hanging rope
7. Operating Guide
A. Insert the two batteries properly to the direction, and then place the cover.
B. Open the clip as shown in Figure 5.
Figure5. Put finger in position
C. Let the patient’s finger put into the rubber cushions of the clip (make sure the finger is in the
right position), and then clip the finger.
a) Press the Power Button on the front panel.
b) Using first finger, middle finger or ring finger when doing test. Low finger temperature, fat
finger, thin finger may cause inaccurate measurement.
c) Do not shake the finger and keep the patient at ease during the process.
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D. Get the information directly from screen display.
E. When working, the display direction can be changed by pressing the button shortly. There are
six modes of direction.
F. In working item，long press can change the lighteness of the screen .
When finger put into the rubber cushions of the clip, make sure nail is upturned.
8. Cleaning and Disinfecting
Using alcohol to disinfect the device, nature dry or clean it with clean soft cloth.
9. Repairing and Maintenance
1. Please change the batteries when the low-voltage indicator lightens.
2. Please clean the surface of the device before using. Wipe the device with alcohol first, and then let
it dry in air or clean it by dry clean fabric.
3. Please take out the batteries if the oximeter is not in use for a long time.
4. The best storage environment of the device is - 20ºC to 55ºC ambient temperature and not higher
than 95% relative humidity.
Please maintain properly for ensuring the device can be used normally.
The device needs to be calibrated once a year (or according to the calibrating program of hospital). It
also can be performed at the state-appointed agent or just contact us for calibration.
High-pressure sterilization cannot be used on the device.
Do not immerse the device in liquid.
It is recommended that the device should be kept in a dry environment. Humidity may
reduce the using life of the device, or even damage it.
10 .Troubleshooting
Trouble Possible Reason Solution
The SpO2 and Pulse Rate
can not be displayed
normally
1. The finger is not properly
positioned.
2. The patient’s SpO2is too low to be
detected.
1. Place the finger properly
and try again.
2. Try again; Go to a hospital
for a diagnosis if you are sure
the device works all right.
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The SpO2 and Pulse Rate
display instable
1. The finger is not placed inside deep
enough.
2. The finger is shaking or the patient
is moving.
1. Place the finger properly
and try again.
2. Let the patient keep calm
The device can not turn
on
1. The batteries are drained or almost
drained.
2. The batteries are not inserted
properly.
3. The device’s malfunction
1. Reinstall batteries.
2. Please contact the local
service center.
The display is off
suddenly
1. The device will power off
automatically if no signal is detected
within 5 seconds.
2. The batteries are almost drained.
1. Normal.
2. Change batteries.
11. Function Specification
Display Information Display Mode
The Pulse Oxygen Saturation（SpO2）2-digit digital OLED display
Pulse Rate（bpm）3-digit digital OLED display
Pulse Intensity (bar-graph) bar-graph OLED display
SpO2Parameter Specification
Measuring range 35%～100%, (the resolution is 1%).
Accuracy ±2% during 70%～100%.Below 70% unspecified.
Optical Sensor Red light (wavelength is 660nm)
Infrared (wavelength is 940nm)
photosensor
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Pulse Parameter Specification
Measuring range 30bpm～240bpm, (the resolution is 1bpm)
Accuracy ±2bpm or±2% (select larger)
Pulse Intensity
Range Continuous bar-graph display, the higher display indicate the stronger
pulse.
Battery Requirement
1.5V (AAAsize) alkaline batteries × 2
Battery useful life
The two batteries can work continually 30 hours.
Dimensions and Weight
Dimensions 57(L) × 31(W) × 32(H) mm
Weight About 50g (with the batteries)
12. Key of Symbols
Symbol Description
Type BF
Warning – See User Manual
The pulse oxygen saturation(%)
Pulse rate (bpm)
Low-voltage
SN Serial number
Battery anode
Battery cathode
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Alarm inhibit
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