Handleiding Contec CMS50D1 Pulse-oxymeter

Handleiding

The Pulse Oximeter features in small volume, low power consumption, convenient operation and being

portable. It is only necessary for patient to put one of his fingers into a fingertip photoelectric sensor for

diagnosis, and a display screen will directly show measured value of SpO

2.

2.1 Classification:

Class II b(MDD93/42/EEC IX Rule 10)

Class II (U.S.FDA)

2.2 Features

 Operation of the product is simple and convenient.

 The product is small in volume, light in weight (total weight is about 50g including batteries) and

convenient in carrying.

 Power consumption of the product is low and the two originally equipped AAA batteries can be operated

continuously for 20 hours.

 The product will automatically be powered off when no signal is in the product within 5 seconds.

2.3 Major Applications and Scope of Application

The Pulse Oximeter can be used to measure human Hemoglobin Saturation and pulse rate through finger, and

indicate the pulse intensity by the bar-display. The product is suitable for use in family, hospital(Ordinary

sickroom ), Oxygen Bar, social medical organizations and also the measure of saturation oxygen and pulse rate.

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.

2.4 Environment Requirements

Storage Environment

a) Temperature :-40 ~+60℃ ℃

b) Relative humidity :≤95%

c) Atmospheric pressure :500hPa~1060hPa

Operating Environment

a) Temperature:10 ~40℃ ℃

b) Relative Humidity :≤75%

c) Atmospheric pressure:700hPa~1060hPa

3 Principle and Caution

3.1 Principle of Measurement

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 (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.

Figure 1. Operating Principle

3.2 Caution

1. The finger should be placed properly (see the attached illustration of this manual ,Figure 5), or else it may cause

inaccurate measurement.

2. The SpO

2

sensor and photoelectric receiving tube should be arranged in a way with the subject’s arteriole in a

position there between.

3. 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.

4. Make sure the optical path is free from any optical obstacles like rubberized fabric.

5. Excessive ambient light may affect the measuring result. It includes fluorescent lamp, dual ruby light, infrared

heater, direct sunlight and etc.

6. Strenuous action of the subject or extreme electrosurgical interference may also affect the accuracy.

7. Testee can not use enamel or other makeup.

3.3 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

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

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.

4 Technical Specifications

1. Display Format: OLED Display;

SpO

2

Measuring Range: 0% - 100%;

Pulse Rate Measuring Range: 30 bpm - 250 bpm;

Pulse Wave Display: columniation display and the waveform display.

2. Power Requirements: 2 ×1.5V AAA alkaline battery(or using the rechargeable battery instead),

adaptable range: 2.6V~3.6V.

3. Power Consumption: Smaller than 30mA.

4. Resolution: 1% for SpO

2

and 1 bpm for Pulse Rate.

5. Measurement Accuracy: ±2% in stage of 70%-100% SpO

2

, and meaningless when stage being smaller

than 70%. ±2 bpm or±2% (select larger) for Pulse Rate.

6. 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% (select larger).

7. 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%.

8. It is equipped with a function switch. The Oximeter can be powered off in case no finger is the Oximeter

within 5 seconds.

9. Optical Sensor

Red light (wavelength is 660nm, 6.65mW)

Infrared (wavelength is 880nm, 6.75mW)

5 Accessories

 One hanging rope;

 Two batteries (optional);

 One User Manual.

6 Installation

6.1 View of the Front Panel

Figure 2. Front View

6.2 Battery

Step 1. Refer to Figure 3. and insert the two AAA size batteries properly in the right direction.

Step 2. Replace the cover.

Please take care when you insert the batteries for the improper insertion may damage the

device.

Figure 3.

Batteries

Installation

6.3

Mounting

the

Hanging

Rope

Step 1. Put

the end of

the rope

through the hole.

Step 2. Put another end of the rope through the first one and then tighten it.

Figure 4.

Mounting

the hanging

rope

Low-battrey

indication

Pulse bar graph

Pulse

waveform

Button

SpO

2

Pulse rate

II

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