Pulse Oximeter
General Description
The measurement of oxygen saturation of arterial blood (also known
as pulse oxygen saturation, usually shortened as SpO
2
) adopts the
principles of light spectra and volume tracing. The LED emits lights with
two specific wavelengths, which are selectively absorbed by oxygenated
hemoglobin and deoxyhemoglobin. The optical receptor measures the
changes in the light intensity after the light passes the capillary network
and estimates the ratio of oxygenated hemoglobin and the total
hemoglobin.
Precautions for use
!
Explosion hazard. Do not use the oximeter in the presence of
flammable anesthetics mixture with air, oxygen, or hydrogen.
!
When the oximeter is in use, there should not be any great power
appliances as high voltage cables, X-ray machine, ultrasound
equipment and electrizer in use nearby.
!
Keep the oximeter away from dust, vibration, corrosive substances,
explosive materials, high temperature and moisture.
!
This oximeter does not have alarm function; please do not use this
product in the environment where alarm is required.
!
The oximeter should be handled with care so as to avoid shocks and
falls.
!
When the oximeter is in use, it must be ensured the batteries have
sufficient capacity; otherwise there might be such phenomena as
starting-up abnormalities or inaccurate measurement data, etc.
!
Please do not use such pointed objects as pen point or nails for
pressing operation, otherwise it might cause permanent damage to the
surface of the keyboard.
!
Do not make any clinical judgments based solely on the oximeter. The
oximeter is intended only as an adjunct in patient assessment. It must
be used in conjunction with clinical signs and symptoms, as well as
doctor’s diagnoses.
!
To ensure accurate performance and prevent device failure, do not
expose the oximeter to extreme moisture, such as direct exposure to
rain. Such exposure may cause inaccurate performance or device
failure.
!
Do not conduct SpO
2
measurement on the finger smeared with nail
polish, otherwise this will lead to unreliable measurement results.
!
Please do not open the enclosure. The enclosure shall only be opened
by the authorized person.
!
In order to have more accurate measurements of SpO
2
and PR, the
oximeter should be used in quiet and comfortable environment.
!
Follow local ordinances and recycling instructions regarding disposal or
recycling of the device and device components, including batteries.
Intended Use
The Fingertip Pulse Oximeter is intended to measure functional
arterial oxygen saturation (SpO2) and pulse rate of adult patients in
hospital, hospital type facilities, as well as in the home care environment.
The oximeter is not suitable to monitor patient continuously for long
term
Operation Instructions
1.
Install two AAA batteries into battery cassette before closing its
cover.
2.
Nip the oximeter, then insert one of fingers
into the rubber hole of the oximeter before
releasing the oximeter, and your nail surface
must be upward.
3.
Press the function button once on front panel.
4.
Your finger and body do not tremble during measuring.
5.
Read corresponding data on the display screen.
6.
After turning on the oximeter, each time you press the power switch,
the display screen will change to another direction.
①
SpO
2
Plethysmogram
②
SpO
2
reading
③
Pulse rate reading
④
Indication of battery capacity
⑤
Indication of pulse intensity
Battery Installations
1.
Press the button down on the back panel of oximeter (for M70, you can
just skip this step to move on the next).
2.
Push the battery cover horizontally along the arrow shown on the back
panel of oximeter.
3.
Install the two AAA batteries into battery cabin
in correct polarities.
4.
Close the battery cover.
Notes:
!
Please put or remove batteries in right order, or it is likely to
damage the device bracket.
!
Battery polarities must be correctly installed. Otherwise, damage
might be caused to device.
!
Please remove the battery if the oximeter will not be used for long
time.
Maintenance
1.
Use a soft cloth dampened with either a commercial, nonabrasive
cleaner, or a solution of 70% alcohol in water, lightly wipe the surfaces
of the oximeter.
2. The most commonly used hospital cleaning agent and non-corrosive
detergents can be used for cleaning the oximeter, but please be
careful that many types of detergents must be diluted before use;
Please use them according to the directions of the manufacturers of
the detergents.
3. Avoid using alcohol-based, amido or acetone-based detergents
4. The casing of the oximeter should be kept from the contamination of
filth and dirt, and it can be wiped with non-velvet soft cloth. When
cleaning, do not spill the liquid onto the instrument. Ensure no liquid is
allowed to enter the inside of the oximeter.
5. It is forbidden to use such grinding materials as wire brush or metal
polishing agent, because these materials may cause damage to the
panels of the oximeter.
6. Please do not soak the oximeter in liquid.
7. Under normal circumstances, it is unnecessary for the oximeter to have
special maintenance, and cautions must be exercised on the following
points during the use of the oximeter:
!
Please use the oximeter in the environment according to the
requirements of the performance criteria.
!
Avoid exposure or direct sunlight.
!
Avoid excessive radioactive infrared rays or ultraviolet rays.
!
Avoid contacts with organic solutions, dusts or corrosive gases.
Product Specifications
"
Measurement specifications
SpO
2
Measuring Range
0~100%
Resolution
1%
Accuracy
At 70~100%, ±2%
；
At 40~69%,±3%
；
At 0~39%, unspecified
Data update period
<13 s
PR
Measuring Range
25~250 bpm
Resolution
1 bpm
Accuracy
±1% or ± 1 bpm, whichever is greater
Data update period
< 13 s
"
Battery specifications
Type
Voltage
two AAA alkaline battery
1.5 Volts DC (per battery)
The oximeter uses two 1.5 V A AA type batteries and a set of new
⑤
③
②
①
④
%
100
lobin
deoxyhemog
bin
oxyhemoglo
hemoglobin
oxygenated
%
SpO
2
×
+
=
