Ferno PEZO2 Instruction Manual Download Page 1

1. Device to be used on or by the order of a physician.
2. Before use, carefully read the manual.
3. Follow all local protocols and care provider standards.
4. Do not use the pulse oximeter in an MRI or CT 
    environment.
5. Do not use the pulse oximeter in situations where 
    alarms are required. The device has no alarms.
6. Explosion hazard: Do not use the pulse oximeter in 
    an explosive atmosphere.
7. The pulse oximeter is intended only as an adjunct in 
    patient assessment. It must be used in conjunction
    with other methods of assessing clinical signs and
    symptoms. Unit is designed for temporary checking;
    not permanent attachment.
8. Check the pulse oximeter sensor application site
    frequently to determine the positioning of the sensor   
    and circulation and skin sensitivity of the patient.
9. Do not use adhesive tape to apply or secure the unit.

10. The pulse oximeter has no SpO2 alarms; it is not for 
      continuous monitoring, as indicated by the symbol.
11. Prolonged use or the patient’s condition may require 
      changing the sensor site periodically.
      Change sensor site and check skin integrity, 
      circulatory status, and correct alignment at least
      every 4 hours.
12. Inaccurate measurements may be caused by 
      autoclaving, ethylene oxide sterilizing, or immersing
      the sensors in liquid may cause inaccurate readings.
13. Significant levels of dysfunctional hemoglobin’s
      (such as carbonxy-hemoglobin or methemoglobin)
14. Intravascular dyes such as indocyanine green or
      methylene blue.
15. SpO2 measurements may be adversely affected in 
      the presence of high ambient light or direct sunlight.
      Shield the sensor area from the light source       
      (example: shield with a towel).
16. Excessive patient movement.
17. High-frequency electrosurgical and electromagnetic
      interference and defibrillators.
18. Venous pulsations
19. Placement of a sensor on an extremity with a blood 
      pressure cuff, arterial catheter, or intravascular line.
20. The patient has hypotension, severe 
      vasoconstriction, severe anemia, or hypothermia.
21. The patient is in cardiac arrest or is in shock
22. Fingernail polish or false fingernails may cause
      inaccurate SpO2 readings.
      Follow local ordinances and recycling instructions
      regarding disposal or recycling of the device and
      device components, including batteries.

1 Operation of the product is simple and convenient
2 The product is small in volume, light in weight (total 
    weight is about 50g including batteries) and can be 
    conveniently carried.
3 Power consumption of the product is low and the two 
    originally-equipped AAA batteries can be operated 
    continuously for approximately 30 hours.
4 Low voltage warning will be indicated in the visual
    window when battery voltage is so low that normal
    operation of the oximeter might be influenced.
5 The product will automatically be powered off when 
    no signal is detected for longer than 8 seconds.

The finger type Oximeter can be used to measure 
human Hemoglobin Saturation and heart rate through a 
finger. The product is suitable for use in family, hospital 
(including clinical use in internist/ surgery, anesthesia, 
pediatrics, intensive care, etc.) With medical direction, 
the unit can be used in sports medicine. The unit can 
be used before or after sports. Operation in sport 
procedure is not recommended, etc. The product is not 
suitable to monitor patient continuously during play or 
activity.
                

1 Remove batter cover. Install two AAA batteries into 
    the battery cassette. Replace cover.
2 Patients finger to be monitored should be clean. Use
    medical alcohol to clean the test finger. Medical 
    alcohol can be used to wipe down the rubber pads 
    inside the clamp zone. Clean the unit before and 
    after each use.
3. Nip (squeeze) the clamp as shown in the diagram.
4. Plug one patient finger into the rubber hole of the
    Oximeter. It is best to fully engage the finger into the 
    unit before releasing the clamp.
5 Press the switch button once on front panel.
6 Hold the patient’s finger steady while the unit is taking 
    its reading. Body movement is not recommended 
    during operation.
7 Read correspondent data from display screen.
8 There are six (6) display modes.   
    

1. General Description   

2. Measurement principle 

Diagram of Operation Principle 

3. Precautions for use

1. Red and Infrared-ray Emission  
2. Red and Infrared-ray Receipt 

 

 

4. Product Properties 

5. Product Operation Scope 

6. Operation Instructions 

 

 

 

1. 

 

2. 

3. 

4. 

5. 

6. 

 

 

When the patients finger is inserted into the
Oximeter, the fingernail surface must be 
facing upward.

 

 

 

Hemoglobin Saturation is a percentage of the amount 
of oxygen combined with hemoglobin in proportion to 
the amount of oxygen the hemoglobin is capable of 
carrying.
It is expressed as a percentage of a ratio:
content/capacity.
In other words, it is the existence of oxygen in the 
blood, which is known as Oxyhemoglobin. It is a very 
important physiological parameter for Respiratory 
circulation system. Many respiratory diseases can 
result in hemoglobin saturation being lowered in human 
blood. Moreover, the following factors can also lead to 
problems in oxygen supply, potentially causing human 
hemoglobin saturation to be reduced:
Automatic Organic Regulation Malfunction caused
by Anesthesia, Intensive Postoperative Trauma, 
injuries resulting from medical examinations, etc. or in 
the situation of illnesses, such as light headedness, 
asthenia, vomiting, etc., might happen to the patients 
and possibly endanger the patient’s life.
Therefore, it is very important to know the patient’s 
hemoglobin saturation. The Finger type Pulse Oxime-
ter features, a large display, low power consumption, 
convenient operation all in a compact portable unit. The 
patient simply puts one finger into the photoelectric 
sensor for diagnosis, and the display screen will 
directly show the measured value of hemoglobin 
Saturation.

Principle of the Oximeter is as follows: An experience 
formula of data process is established taking use of 
Lambert Beer Law according to Spectrum Absorption 
Characteristics of Reductive hemoglobin (R Hb) and 
Oxyhemoglobin (O2 Hb) in glow and near-infrared 
zones. The operation principle of the instrument is 
Photoelectric Oxyhemoglobin inspection technology is 
adopted in accordance with Capacity Pulse Scanning 
and Recording Technology, so that two beams of 
different wavelength of lights (660nm glow and 940nm 
near infrared light) can be focused onto a human nail 
tip through perspective clamp finger-type sensor.
The measured signal is obtained by a photosensitive 
element. The information acquired will be shown on 
two groups of LEDs through a process in the 
electronic circuits and microprocessor.

After turn on the oximeter, each time you 
press the power switch, the oximeter will 
switch to another display mode, there are 6 
display modes shown as follows:

When you press the power switch for a long 
time (more than on second), the brightness 
of the oximeter will be changed by degrees, 
there are 10 levels on brightness; the default 
level is level four. 
Declaration: 

Please use the medical alcohol to 

clean the rubber touching the finger inside of 
Oximeter, and clean the test finger using alcohol 
before an after each test. (The rubber inside os 
the Oximeter belongs medical rubber, which has 
no toxin, and no harmful to the skin of human 
being).

   

7. Brief Description of Front Panel 

     

 

 

The heart rate bar graph display corresponds with 
pulse rate.  

 

 

Instruction Manual

Finger type

Pulse Oximeter

No. 

T10565

 

 

 

Low power indicator 

 

SpO

2

%

PR

bpm

98

77

SPO2 waveform 

 

SpO

2%

PR

 bpm

98

77

 

 

 

PR Bar graph

SPO2 

PR 

Power 

Switch 

FERNO2

FERNO2

FERNO2

FERNO2

FERNO2

FERNO2

FERNO2

FERN

O2

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