B.well Wa-88 User manual

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Wrist Watch Blood Pressure Monitor WA-88

Instruction Manual

Table of contents

1. Introduction 3

1.1. Features 3

1.2. Important information about self-measurement 3

2. Important information on the subject of blood-pressure and its measurement 3

2.1. How does high/low blood-pressure arise? 3

2.2. Which values are normal? 4

2.3. What can be done, if regular high/low values are obtained? 5

3. The various components of the blood-pressure monitor 6

4. Putting the blood-pressure monitor into operation 6

4.1. Inserting the batteries 7

4.2. Reading the set date 7

4.3. Setting the time and date 7

5. Carrying out a measurement 9

5.1. Before the measurement 9

5.2. Common sources of error 9

5.3. Fitting the cuff 10

5.4. Measuring procedure 11

5.5. Discontinuing a measurement 11

5.6. Memory – storage and recall of the measurements 11

6. Error messages/malfunctions 12

7. Care and maintenance, recalibration 13

8. Reference to standards 13

9. Technical specifications 14

10. Guarantee 15

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1. Introduction

1.1. Features

The blood-pressure monitor WA-88 (with integrated time/date display) is a fully automatic, digital blo-

od-pressure measuring device for use on the wrist, which enables very fast and reliable measure ment

of the systolic and diastolic blood-pressure as well as the pulse frequency by way of the oscillometric

method of measuring.

The device offers a very high and clinical tested measurement accuracy and has been designed to

provide a maximum of user-friendliness.

Before using, please read through this instruction manual carefully and then keep it in a safe place. For

further questions on the subject of blood-pressure and its measurement, please contact your doctor.

Attention!

1.2. Important information about self-measurement

Do not forget: self-measurement means control, not diagnosis or treatment. Unusual values must

always be discussed with your doctor. Under no circumstances should you alter the dosages of

any drugs prescribed by your doctor.

The pulse display is not suitable for checking the frequency of heart pacemakers!

In cases of cardiac irregularity (Arrhythmia), measurements made with this instrument should only

be evaluated after consultation with the doctor.

Electromagnetic interference.

The device contains sensitive electronic components (Microcomputer). Therefore, avoid strong electrical

or electromagnetic fields in the direct vicinity of the device (e.g. mobile telephones, microwave cookers).

These can lead to temporary impairment of the measuring accuracy.

2. Important information on the subject of blood-pressure and its measurement

2.1. How does high/low blood-pressure arise?

The level of blood-pressure is determined in a part of the brain, the so-called circulatory centre, and

adapted to the respective situation by way of feedback via the nervous system.

To adjust the blood-pressure, the strength and frequency of the heart (Pulse), as well as the width of circ-

ulatory blood vessels is altered. The latter is effected by way of fine muscles in the blood-vessel walls.

The level of arterial blood-pressure changes periodically during the heart activity: during the «blood

ejection» (Systole) the value is maximal (systolic blood-pressure value), at the end of the heart’s «rest

period» (Diastole) minimal (diastolic blood-pressure value).

The blood-pressure values must lie within certain normal ranges in order to prevent particular diseases.

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2.2. Which values are normal?

Blood pressure is too high if at rest, the diastolic pressure is above 90 mmHg and/or the systolic

blood-pressure is over 140 mmHg. In this case, please consult your doctor immediately. Long-term

values at this level endanger your health due to the associated advancing damage to the blood vessels

in your body.

With blood-pressure values that are too low, i.e. systolic values under 105 mmHg and/or diastolic values

under 60 mmHg, likewise, please consult your doctor.

Even with normal blood-pressure values, a regular self-check with your blood-pressure monitor is reco-

mmended. In this way you can detect possible changes in your values early and react appropriately.

If you are undergoing medical treatment to control your blood pressure, please keep a record of the

level of your blood pressure by carrying out regular self-measurements at specific times of the day.

Show these values to your doctor. Never use the results of your measurements to alter independently

the drug doses prescribed by your doctor.

Table for classifying blood-pressure values (units mmHg) according to World Health

Organization:

Range

Systolic Blood-pr-

essure

Diastolic Blood-pr-

essure

Measures

Hypotension

lower than 100

lower than 60

Consult your doctor

Normal range

between 100 and 140

between 60 and 90

Self-check

Mild hypertension

between 140 and 160

between 90 and 100

Consult your doctor

Moderately serious hyp-

ertension

between 160 and 180

between 100 and 110

Consult your doctor

Serious hypertension

higher than 180

higher than 110

Consult your doctor

immediately

Specific systolic hype-

rtension

higher than 140

lower than 90

Consult your doctor

Further information

If your values are mostly standard under resting conditions but exceptionally high under con ditions

of physical or psychological stress, it is possible that you are suffering from so-called «labile

hypertension». Please consult your doctor if you suspect that this might be the case.

Correctly measured diastolic blood-pressure values above 120 mmHg require immediate medical

treatment.

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2.3. What can be done, if regular increased/low values are obtained?

a) Please consult your doctor.

b) Increased blood-pressure values (various forms of hypertension) are associated long- and medium

term with considerable risks to health. This concerns the arterial blood vessels of your body, which

are endangered due to constriction caused by deposits in the vessel walls (Arteriosclerosis). A

deficient supply of blood to important organs (heart, brain, muscles) can be the result. Furthermore,

with long-term continuously increased blood-pressure values, the heart will become structurally

damaged.

c) There are many different causes of the appearance of high blood pressure. We differentiate between

the common primary (essential) hypertension, and secondary hypertension. The latter group can

be ascribed to specific organic malfunctions. Please consult your doctor for information about the

possible origins of your own increased blood pressure values.

d) There are measures which you can take, not only for reducing a medically established high blood

pressure, but also for prevention. These measures are part of your general way of life:

A) Eating habits

Strive for a normal weight corresponding to your age. Reduce overweight!

Avoid excessive consumption of common salt.

Avoid fatty foods.

B) Previous illnesses

Follow consistently any medical instructions for treating previous illness such as:

Diabetes (Diabetes mellitus)

Fat metabolism disorder

Gout

C) Habits

Give up smoking completely

Drink only moderate amounts of alcohol

Restrict your caffeine consumption (Coffee)

D) Physical constitution:

After a preliminary medical examination, do regular sport.

Choose sports which require stamina and avoid those which require strength.

Avoid reaching the limit of your performance.

With previous illnesses and/or an age of over 40 years, please consult your doctor before beginning

your sporting activities. He will advise you regarding the type and extent of types of sport that

are possible for you.

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3. The various components of the blood-pressure monitor

The illustration shows the blood-pressure monitor, consisting of:

4. Putting the blood-pressure monitor into operation

4.1. Inserting the batteries.

After you have unpacked your device, first insert the batteries. The battery compartment is located on

the left lateral side of the device (see illustration).

a) Remove cover as illustrated.

b) Insert the batteries (2 x size AAA 1.5V), thereby observing the indicated polarity.

c) If the battery warning appears in the display, the batteries are empty

and must be replaced

by new ones.

Time button

Memory button

Start button

Battery Cover

Wrist Cuff

Wrist cuff 13.5–19.5 cm, for wrist circumference of 13.5 to 19.5 cm

LCD Display

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Attention!

After the battery warning appears, the device is blocked until the batteries have been replaced.

Please use «AAA» Long-Life or Alkaline 1.5V Batteries. The use of 1.2V Accumulators is not reco-

mmended.

If the blood-pressure monitor is left unused for long periods, please remove the batteries from the

device.

Functional check:

Hold on the O/I button

down to test all the display elements. When functioning

correctly all segments must appear.

4.2. Reading the set date

Please press the «Time»

key.

4.3. Setting the time and date

This blood-pressure monitor incorporates an integrated clock with date display. This has the advantage,

that at each measurement procedure, not only the blood-pressure values are stored, but also the exact

moment of the measurement.

After new batteries have been inserted, the clock begins to run from the following setting: 2003-1-01

12:00 o’clock.

You must then re-enter the date and current time. For this, please proceed as follows (Example: Entering

2006-06-15 Time 09:30 o’clock):

1) Press the TIME

button for at least 3 seconds.

The display now indicates the set year, during which

the last two characters blink.

2) The correct year can be entered by pressing

the MEMORY

button. (Example: 3 x press)

3) Press the TIME

button again. The display

now switches to the current date, during which

the first character (month) blinks.

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4) The corresponding month can now be entered

by pressing the MEMORY

button. (Example: 5 x presses)

5) Press the TIME

button again. The last two

characters (day) are now blinking.

6) The corresponding day can now be entered

by pressing the MEMORY

button. (Example: 29 x presses)

7) Press the TIME

button again. The display

now switches to the current time, during which

the first character (Hour) blinks.

8) The corresponding hour can now be entered

by pressing the MEMORY

button. (Example: 8 x presses)

9) Press the TIME

button again. The last two

characters (Minutes) now blink.

10) The exact time can now be entered by pressing

the MEMORY

button. (Example: 30 x presses)

11) Now after all settings have been made, press

the TIME

button once again. The date is briefly displayed

and then the time. The input is now confirmed

and the clock begins to run.

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Further Information

With each press of the button

(TIME, MEMORY)

one input is made (e.g. switching over from hours to minutes

mode, or altering the value by +1).

However, if you keep the respective button depressed,

you can switch more quickly to the desired mode,

or find the desired value respectively.

5. Carrying out a measurement

5.1. Before the measurement:

• Avoid eating, smoking as well as all forms of exertion directly before the measurement. All these

factors influence the measurement result. Try and find time to relax by sitting in an armchair in a

quite atmosphere for about ten minutes before the measurement.

• Measure always on the same wrist (normally left).

• Attempt to carry out the measurements regularly at the same time of day, since the blood-pressure

changes during the course of the day.

5.2. Common sources of error:

Note:

Comparable blood-pressure measurements always require the same conditions!

These are normally always quiet conditions.

All efforts by the patient to support the arm can increase the blood-pressure. Make sure you are

in a comfortable, relaxed position and do not activate any of the muscles in the measurement arm

during the measurement. Use a cushion for support if necessary.

If the wrist artery lies considerably lower (higher) than the heart, an erroneously higher (lower)

blood-pressure will be measured! (Each 15 cm difference in height results in a measurement error

of 10 mmHg!)

A loose cuff causes false measurement values.

With repeated measurements, blood accumulates in the respective arm, which can lead to false

results. Correctly executed blood-pressure measurements should therefore first be repeated after

a 5 minute pause or after the arm has been held up in order to allow the accumulated blood to flow

away (after at least 3 minutes).

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5.3. Fitting the cuff

a) Remove all eventual objects and jewellery (e.g. wristwatch) from

the wrist in question.

Draw the cuff over the wrist.

b) The distance between the cuff and the hand should be approx.

10 mm.

c) Secure the cuff with the Velcro fastener, so that it lies comfortably

and not too tight, whereby no space should remain between the

cuff and the wrist.

d) Lay the arm on a table, with the palm upwards. Support the

arm a little with a rest (cushion), so that the cuff rests at about

the same height as the heart. Take care, that the cuff lies free.

Remain so for 2 minutes sitting quietly, before beginning with

the measurement.

e) In case the measurement is to be carried out on the right wrist, position the cuff accordingly.

However, measurements should always be carried out on the same wrist, so that the values can

be compared with each other.

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5.4. Measuring procedure

After the cuff has been appropriately positioned and the setting of the pre-

ssure pre-selection has been undertaken, the measurement can begin:

a) Press O/I

button to put the device into operation.

b) Press the START-button, – the pump begins to inflate the cuff. In

the display, the increasing cuff-pressure is continually displayed.

c) After reaching the inflation pressure, the pump stops and the

pressure slowly falls away. The cuff-pressure (large characters)

is displayed during the measurement. When the device has

detected the pulse, the heart

symbol in the display begins to

blink and a peep tone is audible for every pulse beat.

d) When the measurement has been concluded, a long peep tone

sounds. The measured systolic and diastolic blood-pressure

values as well as the pulse frequency are now displayed.

Example (Fig.): Systole 125, Diastole 73, Pulse 75

The measurement results are displayed, until you switch the device

off. If no button is pressed for 5 minutes, the device switches auto-

matically off, to save the batteries.

5.5. Discontinuing a measurement

If it is necessary to interrupt a blood pressure measurement for any

reason (e.g. the patient feels unwell), the O/I

button can be

pressed at any time. The device then immediately lowers the cuff-

pressure automatically.

5.6. Memory – storage and recall of the measurements

The blood-pressure monitor automatically stores each of the last 30

measurement values.

By pressing the MEMORY

button, the last measurement (MR1)

as well as the further last 29 measurements (MR2, MR3, ..., MR30)

can be displayed one after the other.

(MR1: Values of the last measurement)

(MR2-MR30: Values of the measurement before MR1)

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Further information

Measurements should not occur soon after each other, since otherwise, the results will be falsified. Wait

therefore for several minutes in a relaxed position, sitting or lying, before you repeat a measurement.

6. Error messages/malfunctions

If an error occurs during a measurement, the measurement is discontinued and a corresponding error

code is displayed (Example: Error No. 2).

Error No.

Possible cause(s)

«Err 1»

No pulse has been detected.

«Err 2»

Unnatural pressure impulses influence the measurement result. Reason: The arm was

moved during the Measurement (Artefact).

«Err 3»

The inflation of the cuff takes too long. The cuff is not correctly seated.

Other possible malfunctions and their elimination

If problems occur when using the device, the following points should be checked and if necessary, the

corresponding measures are to be taken:

Malfunction

Remedy

The display remains empty when the instrument is

switched on although the batteries are in place.

1. Check batteries for correct polarity and if

necessary insert correctly.

2. If the display is unusual, re-insert batteries

or exchange them.

The device frequently fails to measure the blood

pressure values, or the values measured are too

low (too high).

1. Check the positioning of the cuff.

2. Measure the blood-pres sure again in pe-

ace and quiet under observance of the details

made under point 5.

Every measurement results in different values, alth-

ough the device functions normally and

normal values are displayed.

1. Please pay attention to the following in-

formation as well as the points listed under

«Common sources of error» and repeat the

measurement.

The blood pressure values measured differ from

those measured by the doctor.

1. Record the daily development of the val ues

and consult your doctor about them.

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7. Care and maintenance, recalivration

a) Do not expose the device to either extreme temperatures,

humidity, dust or direct sunlight.

b) The cuff contains a sensitive air-tight bubble. Handle this care-

fully and avoid all types of straining through twisting or buckling.

c) Clean the device with a soft, dry cloth. Do not use petrol, thinners

or similar solvent. Spots on the cuff can be removed carefully with a

damp cloth and soapsuds. The cuff must not be washed!

Do not drop

the instrument or treat it roughly in any way. Avoid

strong vibrations.

e) Never open the device! Otherwise the manufacturer calibration

becomes invalid!

Periodical recalibration

Sensitive measuring devices must from time to time be checked for

accuracy. We therefore recommend a periodical inspection of the

static pressure display

every 1 year.

Your specialist dealer would be pleased to provide more extensive

information about this.

8. Reference to standards

Device standard:

Device corresponds to the requirements of the European stan-

dard for non-invasive blood-pressure monitor

EN1060-1 / 12:95

EN1060-3 / 09:97

DIN 58130, NIBP – clinical investigation

ANSI / AAMI SP10, NIBP – requirements

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Electromagn. compatibility:

Device fulfils the stipulations of the European standard EN 60601-1-2

Clinical testing:

The clinical performance test was carried out in Germany according to the DIN 58130 / 1997

procedure N6 (sequential).

The stipulations of the EU-Guidelines 93/42/EWG for Medical Products Class IIa have been fulfilled.

9. Technical specifications

Weight: 145g (with batteries + cuff)

Size: 80 x 70 x 75mm (including cuff)

Storage temperature: –5 to +50°C

Humidity: 15 to 85% relative humidity maximum

Operation temperature: 10 to 40°С

Display: LCD-Display (Liquid Crystal Display)

Measuring method: oscillometric

Measuring range:

- SYS/DIA 30 to 280 mmHg

- pulse 40 to 200 per minute

Cuff pressure display range: 0 to 299 mmHg

Memory: storing the last 30 measurements automatically

Measuring resolution: 1 mmHg

Accuracy:

- pressure within ±3 mmHg

- pulse >5 % of the reading

Power source: 2 dry cells (Batteries) UM-4, size AAA 1.5V

Accessories: storage case, 2 dry cells (Batteries) UM-4, size AAA,

instruction manual

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10. Guarantee

The blood-pressure monitor is guaranteed for 3 years from date of purchase. This guarantee includes

the instrument. The guarantee does not apply to damage caused by improper handling, accidents, not

following the operating instructions or alterations made to the instrument by third parties.

The guarantee is only valid upon presentation of the guarantee card filled out by the dealer.

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Измеритель артериального давления и частоты пульса WA-88

Руководство по эксплуатации

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Содержание

1. Введение 19

1.1. Особенности прибора WA-88 19

1.2. Важные указания по самостоятельному измерению артериального давления 19

2. Важная информация об артериальном давлении и его измерении 19

2.1. Как возникает повышенное давление? 19

2.2. Какое давление является нормальным? 20

2.3. Что делать, если регулярно определяется повышенное или пониженное давление? 21

3. Составные части прибора 23

4. Ввод прибора в эксплуатацию 23

4.1. Установка батареек 23

4.2. Считывание установленной даты 24

4.3. Установка времени суток и даты 24

5. Выполнение измерения 26

5.1. Перед началом измерений 26

5.2. Часто встречающиеся ошибки 26

5.3. Наложение манжеты 27

5.4. Процесс измерения 28

5.5. Использование функций памяти 28

5.6. Преждевременное прерывание измерения 29

6. Сообщения об ошибке. Неисправности 29

7. Уход за прибором и дополнительная калибровка 30

8. Соответствие стандартам 31

9. Технические характеристики 32

10. Гарантия 33

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Table of contents

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