Contec Medical Systems Co. Ltd. CMS50D-BT User Manual
Instructions to User
Dear Users, thank you very much for purchasing our product.
This Manual is written and compiled in accordance with the
This Manual is written and compiled in accordance with the
council directive IEC 60601-1、IEC 60601-1-11 and
ISO 80601-2-61 for medical devices and harmonized standards. In case of modifications and software upgrades,
the information contained in this document is subject to change without notice.
The Manual describes, in accordance with the 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.
Please read the Manual very carefully before using this device. These instructions describe the operating
procedures to 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’s warranty service does not cover such faults.
Owing to the forthcoming renovation, the specific products you received may not be totally in accordance with the
description of this User Manual. We would sincerely regret for that.
The device is a medical device, and it can be used repeatedly.
the information contained in this document is subject to change without notice.
The Manual describes, in accordance with the 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.
Please read the Manual very carefully before using this device. These instructions describe the operating
procedures to 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’s warranty service does not cover such faults.
Owing to the forthcoming renovation, the specific products you received may not be totally in accordance with the
description of this User Manual. We would sincerely regret for that.
The device is a medical device, and it can be used repeatedly.
Notice
: Please read the Manual very carefully before using this device.
1 Safety
1.1 Instructions for safe operations
1) Inspect periodically, make sure that there is no visible damage that may affect patient’s safety and monitoring
1) Inspect periodically, make sure that there is no visible damage that may affect patient’s safety and monitoring
performance about cables and transducers. It is recommended that the device should be inspected at least once a
week. Please stop using the device if there is obvious damage to the device
week. Please stop using the device if there is obvious damage to the device
2) Necessary maintenance must be performed by qualified service engineers appointed by our company ONLY.
Users are not permitted to maintain the device by themselves.
3) The oximeter cannot be used together with devices not specified in User’s Manual. Only the accessory that is
appointed or recommendatory by manufacture can be used with this device.
4) The device has been calibrated before leaving factory.
1.2 Attentions
Keep the oximeter away from dust, vibration, corrosive substances, explosive materials, high temperature and
1.2 Attentions
Keep the oximeter away from dust, vibration, corrosive substances, explosive materials, high temperature and
moisture.
If the device gets wet, please stop operating it.
When the device is carried from cold environment to warm or humid environment, please do not use it
When the device is carried from cold environment to warm or humid environment, please do not use it
immediately.
DO NOT operate switch on front panel with sharp materials.
High temperature or high pressure steam disinfection of the oximeter is not permitted. Refer to User Manual in
High temperature or high pressure steam disinfection of the oximeter is not permitted. Refer to User Manual in
the relative chapter (6.1) for instructions of cleaning and disinfection.
Do not have the oximeter immerged in liquid. When it needs cleaning, please wipe its surface with medical
alcohol. Do not spray any liquid on the device directly.
When cleaning the device with water, the temperature should be lower than 60 ℃.
The fingers which are too thin or too cold may affect the measure accuracy, please insert the thicker finger such
The fingers which are too thin or too cold may affect the measure accuracy, please insert the thicker finger such
as thumb or middle finger deeply enough into the probe.
Do not use the device on infant or neonatal patients.
The product is suitable for children above four years old and adults(Weight should be between 15 Kg to 110
The product is suitable for children above four years old and adults(Weight should be between 15 Kg to 110
Kg).
The device may not work for all patients. If you are unable to achieve stable readings, discontinue use.
The update period of data is less than 5 seconds, which is changeable according to different pulse rate values.
If some abnormal conditions appear on the screen during test process, pull out the finger and reinsert to
The update period of data is less than 5 seconds, which is changeable according to different pulse rate values.
If some abnormal conditions appear on the screen during test process, pull out the finger and reinsert to
restore normal use.
The device has useful life for three years.
The lanyard is made of insensitive material, please don't use it if any person is extra sensitive to lanyard. And
The lanyard is made of insensitive material, please don't use it if any person is extra sensitive to lanyard. And
do not wrap the lanyard around neck to avoid an accident.
The device hasn't low-voltage alarm function, it only shows the low-voltage, please change the battery when the
battery voltage is used up.
The device hasn’t the alarm function of exceeding limits, do not use it in situations where alarms are required
The maximum temperature for the contact surface of the device with the body is less than 41 ℃, and the
The maximum temperature for the contact surface of the device with the body is less than 41 ℃, and the
temperature is measured by a temperature measuring device.
Batteries must be removed if the device is going to be stored for more than one month, or else batteries may
leak.
Do not twist or pull on the connection circuit.
1.3 Warnings
1.3 Warnings
Warning
:
1) Explosive hazard—DO NOT use the device in environment with inflammable gas such as some ignitable
anesthetic agents.
2) DO NOT use the device while the testee is being scanned by MRI or CT.
3) In optical treatment, please follow doctor requirement to use the device.
4) DO NOT strand the lanyard in order to avoid device drop and damage. The lanyard is made of insensitive
3) In optical treatment, please follow doctor requirement to use the device.
4) DO NOT strand the lanyard in order to avoid device drop and damage. The lanyard is made of insensitive
material. Please do not use it if any person is allergic to lanyard. Do not wrap the lanyard around neck to avoid
an accident.
an accident.
5) The person who is allergic to rubber can not use this device.
6) The disposal of scrap device and its accessories and packing(including battery, plastic bags, foams and paper
6) The disposal of scrap device and its accessories and packing(including battery, plastic bags, foams and paper
boxes) should follow the local laws and regulations.
7) Please check the packing before use to make sure the device and accessories are totally in accordance with the
packing list, or else the device may have the possibility of working abnormally.
8) Please don't measure this device with function tester for the device's related information.
9) The uncomfortable or painful feeling may appear if using the device ceaselessly, especially for the
9) The uncomfortable 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.
over 2 hours.
10) The SpO
2
probe can not be clipped on the edema and tender tissue.
11) The infrared is harmful to eyes, so the user and the maintenance man should not stare at the light part of the
SpO
2
probe (the infrared is invisible).
12) Testee can not use enamel or other makeup.
13) The fingernails of the testee should not be too long.
14) For the details of correlative clinic restriction and contraindications, please refer to the related medical
13) The fingernails of the testee should not be too long.
14) For the details of correlative clinic restriction and contraindications, please refer to the related medical
literatures.
15) The device is not intended for treatment.
16) The device is a medical device, and it can be used repeatedly.
1.4 Attention for operation
a. Please check the device before using, and confirm that it can work normally.
b. The finger should be placed properly (see the attached illustration of this manual, Figure 1), or else it may cause
16) The device is a medical device, and it can be used repeatedly.
1.4 Attention for operation
a. Please check the device before using, and confirm that it can work normally.
b. The finger should be placed properly (see the attached illustration of this manual, Figure 1), or else it may cause
inaccurate measurement.
c. The SpO
2
sensor and photoelectric receiving tube should be arranged in a way with the subject’s arteriole in a
position there between.
d. The SpO
2
sensor 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.
f. Excessive ambient light may affect the measurement result. It includes fluorescent lamp, dual ruby light,
f. Excessive ambient light may affect the measurement result. It includes fluorescent lamp, dual ruby light,
infrared heater, direct sunlight and etc.
g. Strenuous action of the subject 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 (6.1.1)
j. The Pedometer should be worn on the waist, and fixed well.
1.5 Clinical restrictions
1. As the measure is taken on the basis of arteriole pulse, substantial pulsating blood flow of subject is required.
h. Testee can not use enamel or other makeup.
i. Please clean and disinfect the device after operating according to the User Manual (6.1.1)
j. The Pedometer should be worn on the waist, and fixed well.
1.5 Clinical restrictions
1. As the measure is taken on the basis of arteriole pulse, substantial pulsating blood flow of subject is required.
For a subject with weak pulse due to shock, low ambient/body temperature, major bleeding, or use of vascular
contracting drug, the SpO
contracting drug, the SpO
2
waveform (PLETH) will decrease. In this case, the measurement will be more
sensitive to interference.
2. 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 SpO
and some with icterus problem, the SpO
2
determination by this monitor may be inaccurate.
3. The drugs like dopamine, procaine, prilocaine, lidocaine and butacaine may also be a major factor blamed for
serious error of SpO
2
measure.
4. As the SpO
2
value serves as a reference value for judgement of anemic anoxia and toxic anoxia, some patients
with serious anemia may also report good SpO
2
measurement.
Notice
The product is not suitable for use in continuous supervision for patients.
The problem of overrating would emerge when the patient is suffering from toxicosis which caused by
carbon monoxide, the device is not recommended to be used under this circumstance.
The problem of overrating would emerge when the patient is suffering from toxicosis which caused by
carbon monoxide, the device is not recommended to be used under this circumstance.
2 Principle
2.1 Operation principle for Pulse Oximeter
Figure 1 Operating principle
Principle of the Oximeter is as below: An experience formula of data process is established taking use of Lambert
Beer Law according to Spectrum Absorption Characteristics of Reductive Hemoglobin (Hb) and Oxyhemoglobin
(HbO
Beer Law according to Spectrum Absorption Characteristics of Reductive Hemoglobin (Hb) and Oxyhemoglobin
(HbO
2
) in glow & near-infrared zones. Operation principle of the instrument is: Photoelectric Oxyhemoglobin
Inspection Technology is adopted in accordance with Capacity Pulse Scanning & Recording Technology, so that
two beams of different wavelength of lights can be focused onto human nail tip through perspective clamp
finger-type sensor. Then measured signal can be obtained by a photosensitive element, information acquired
through which will be shown on screen through treatment in electronic circuits and microprocessor.
2.2 Operation principle for Pedometer
The Pedometer, basing on counting steps by acceleration sensor, adopts the recognition principle of pace waveform
and its acceleration and deceleration process for recognizing the waveform produced by person walking, finally
gets the number of steps. Detailed method: use the acceleration sensor to collect user’s steps(more than three steps),
via analyzing and calculating, obtain the peak value of step vibration waveform and the average value of
acceleration difference value, and set it to the threshold value. Collect the user’s actual step waveform data, if it is
in the threshold range, then it is considered that user walks one step forward.
two beams of different wavelength of lights can be focused onto human nail tip through perspective clamp
finger-type sensor. Then measured signal can be obtained by a photosensitive element, information acquired
through which will be shown on screen through treatment in electronic circuits and microprocessor.
2.2 Operation principle for Pedometer
The Pedometer, basing on counting steps by acceleration sensor, adopts the recognition principle of pace waveform
and its acceleration and deceleration process for recognizing the waveform produced by person walking, finally
gets the number of steps. Detailed method: use the acceleration sensor to collect user’s steps(more than three steps),
via analyzing and calculating, obtain the peak value of step vibration waveform and the average value of
acceleration difference value, and set it to the threshold value. Collect the user’s actual step waveform data, if it is
in the threshold range, then it is considered that user walks one step forward.
3 Technical specifications
3.1 Main performance
1) Display of SpO
1) Display of SpO
2
value.
2) Display of pulse rate and bar graph.
3) Low-battery indication.
4) Storage function of SpO
3) Low-battery indication.
4) Storage function of SpO
2
and pulse rate value
5) Sync time function.
6) Display of steps, calorie and time.
7) The pedometer can store data
8) Display direction can be changed automatically.
9) Height, weight and target calorie can be set by the server.
10) Extra low-power consumption setting.
11) The device will automatically enter to blank screen state when there is no operation for one minute.
12) The data stored can be uploaded to APP by Bluetooth, APP will upload the data to CLOUD platform for
6) Display of steps, calorie and time.
7) The pedometer can store data
8) Display direction can be changed automatically.
9) Height, weight and target calorie can be set by the server.
10) Extra low-power consumption setting.
11) The device will automatically enter to blank screen state when there is no operation for one minute.
12) The data stored can be uploaded to APP by Bluetooth, APP will upload the data to CLOUD platform for
analyzing.
3.2 Main Parameters
1. SpO
1. SpO
2
measurement range: 0 %~100 %
Accuracy: 70 %~100 %: ±2 %
0 %~69 %: unspecified
2. PR measurement range: 30 bpm~250 bpm
Accuracy: ±2 bpm or ±2 %, whichever is greater.
3. Resolution:
SpO
2
: 1 %
PR: 1 bpm
4. Measurement Performance in Weak Filling Condition: SpO
2
and pulse rate can be shown
correctly when pulse-filling ratio is 0.4 %. SpO
2
error is ±4 %, pulse rate error is ±2 bpm or ±2 %, whichever is
greater.
5. Resistance to surrounding light: The deviation between the value measured in the condition
of man-made light or indoor natural light and that of darkroom is less than ±1 %.
6. Pedometer measurement:
Measurement range: 0~65535 steps
Resolution: one step
Resolution: one step
7. Memory function: record 1000 groups of SpO
2
data, 224-day pedometer data.
8. Working voltage: DC 3 V
9. Optical Sensor: red light (wavelength is 660 nm,6.65 mW) Infrared (wavelength is 880 nm, 6.75 mW)
3.3 Environment requirements
Storage Environment
9. Optical Sensor: red light (wavelength is 660 nm,6.65 mW) Infrared (wavelength is 880 nm, 6.75 mW)
3.3 Environment requirements
Storage Environment
a)Temperature: -40 ~
℃
+60 ℃
b)Relative humidity: ≤95 %
c)Atmospheric pressure: 500 hPa~1060 hPa
c)Atmospheric pressure: 500 hPa~1060 hPa
Operating Environment
a)Temperature: 10 ~
℃
40 ℃
b)Relative humidity: ≤75 %
c)Atmospheric pressure: 700 hPa~ 1060 hPa
c)Atmospheric pressure: 700 hPa~ 1060 hPa
4 Device introduction
4.1 Appearance introduction
Button
Screen
Battery compartment