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Digital Blood Pressure Monitor
for the Upper Arm
INSTRUCTION FOR USE
GT-6630
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Contents
This unit uses an oscillometric measurement method
in order to measure systolic and diastolic blood pressure, as well as the heart rate.
The measurement is conducted on the upper arm.
All values can be read on an LCD screen.
This unit has been developed for home and profes-
sional use and should only be used by adults over
18 years of age with an arm diameter of 22 ~ 32 cm /
8.7 - 12.6 inches.
Designated Use ......................................................... 30
Precautions ............................................................... 31
Warranty ..................................................................... 33
Information You Should Know
Before Operating the Unit ........................................ 34
About the Unit
Function Descriptions ............................................. 37
Explanation of Display Symbols ............................. 37
Preparation for Use
Installing/Replacing Batteries ................................. 38
Attaching the Pressure Cuff .................................... 39
Measuring Posture ................................................. 40
How to Operate the Unit
Setting the Clock and Date ..................................... 41
Measuring Blood Pressure ..................................... 42
Recalling Memory Values ....................................... 43
Erasing Memory Values .......................................... 44
Data Transfer and Analysis
via desktop 2.0 Software ........................................ 44
Care and Maintenance ............................................... 45
Error Messages .......................................................... 47
Specifi cations ............................................................. 48
Disposal ..................................................................... 49
Quality standard ......................................................... 49
Symbol Index ............................................................. 50
Annex ......................................................................... 51
Designated Use
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• This manual and the product are not substitutes for
visiting the doctor.
Neither the information contained herein nor this
product may be used to diagnose or treat health
problems, or to prescribe drugs. If you have or suspect that you have a medical problem, please seek
immediate advice from your doctor.
• Do not conduct any measurements if the temperature is low (below +5 °C) or high (over +40 °C), or if
the relative humidity is beyond the range of 15 % to
90 %, as this can lead to inaccurate readings.
• Wait 30 to 45 minutes, before taking a measurement if you have just had a caffeinated drink or a
cigarette.
• Relax for at least 5 to 10 minutes before taking a
measurement.
• Please wait 3 to 5 minutes between measurements, so that your blood vessels can return to the
state they were in prior to measurement. You may
have to adapt the waiting time to your personal
physiology.
• It is recommended that you use the same arm for
each measurement (preferably the left) and take
the measurement at about the same time every day.
• Sit down comfortably with your elbows placed on
the table and both feet on the ground. Please do
not interlock your legs during the measurement.
• Place the unit at the level of the heart. Relax your
hand. Your palm should be facing up.
• Take the measurement at room temperature in a
quiet and stress-free environment.
• The unit should not be moved or shaken during
the measurement. Please do not speak during the
measurement.
• Please keep in mind that blood pressure naturally
varies depending on the time of day and is affected
by many different factors. Blood pressure is usually
highest at work and reaches its lowest level during
the sleep phase.
Precautions
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• Blood pressure measurements should be assessed
by a doctor or trained healthcare professional who
is familiar with your medical history. If you use the
unit and regularly record the results, please keep
your doctor informed with regard to the ongoing
changes in your blood pressure.
• If you suffer from a cardiovascular disease (such as
atherosclerosis), diabetes, a liver or kidney disease,
severe hypertension or peripheral circulatory disorders, etc., please consult your doctor before using
this unit.
• The performance of this device can be infl uenced
as severe arrhythmias such as atrial or ventricular
premature beats or atrial fi brillation are presented
during measurement.
• The blood pressure measurements conducted with
this unit are equivalent to measurements obtained
by a trained observer in accordance with the values
achieved using the cuff/stethoscope auscultation
method and are within the specifi ed EN 1060-4
standard limits.
• If the cuff causes any discomfort during the measurement, press the “POWER” button to turn off the
unit immediately.
• If the pressure is over 300 mmHg and the cuff does
not defl ate automatically, pull off the Velcro strap to
detach the cuff.
• Do not use this appliance on infants, children or persons who cannot express their own intentions.
• To avoid accidental strangulation, keep the product away from children and do not place the hose
around the neck.
• Measuring too frequently may result in circulatory
disorders, which can cause unpleasant sensations
such as localised bleeding under the skin or temporary numbness in your arm. These symptoms do
not usually last long. However, if you have not recovered after some time, please consult your doctor.
Precautions
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The warranty for this blood pressure monitor is valid for
any error on the part of the manufacturer under normal
use for 3 years from the date of purchase. If your unit
does not function properly due to defective parts or assembly, we will repair it free of charge.
With the exception of the battery and cuff, all parts of
the unit are subject to this warranty. Damage caused
by improper handling of your unit is not guaranteed.
We recommend that the accuracy of the unit be
checked after 2 years from manufacturing date by an
authorized laboratory.
This checking procedure is not a service provided under the warranty.
WARRANTY
• Please take into consideration the electromagnetic
compatibility of the unit (e.g. disruptions to the power supply, radio frequency interference, etc.) see
annex. Please only use the unit indoors. To avoid
inaccurate results due to electromagnetic interference between electrical and electronic equipment,
please do not use the unit near mobile phones or
microwave ovens. In the case of devices whose
maximum power exceeds 2 W, the minimum distance from your blood pressure monitor should be
3.3 metres.
• The unit is not waterproof. Never immerse this instrument in any liquids.
• Do not use the instrument if you think it is damaged
or if you notice anything unusual.
Precautions
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Information You Should Know Before
Operating the Unit
What is blood pressure?
A force is created by the heart as the ventricle forcibly
ejects blood into the blood vessels and through the
vascular system. Another force is created by the arter-
ies as they resist the blood fl ow. Blood pressure is the
result of these two forces.
Comparison to WHO recommendations
See the following blood pressure classifi cation chart
released by the WHO (World Health Organization) for
evaluation of your blood pressure level.
Severe hypertension (Grade 3)
Moderate Hypertension (Grade 2)
Mild Hypertension (Grade 1)
Optimal
Normal
Boarderline
Blood
pressure
classifi ca-
tion
Systolic BP
mmHG
Diastolic BP
mmHg
Color
indicator
Optimal < 120 < 80 6x Green
Normal 120 – 129 80 – 84 3x Green
High –
Normal
130 – 139 85 – 89 6x Yellow
Stage 1
Hypertension
140 – 159 90 – 99 2x Red
Stage 2
Hypertension
160 – 179 100 – 109 4x Red
Stage 3
Hypertension
>= 180 >= 110 6x Red
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Information You Should Know Before
Operating the Unit
What are systolic and diastolic blood pressures?
Systolic blood pressure is the highest pressure at the
heart‘s maximum contraction. Diastolic blood pressure
is the lowest pressure when the heart is resting.
What about low blood pressure?
In general, a lower blood pressure reading is better un-
less it causes unpleasant symptoms such as fainting
and/or lightheadedness.
Fluctuation and variation in blood pressure
The following chart shows possible blood pressure fl uc-
tuations during a 24-hour period.
The following factors will infl uence blood pressure
measurement results and cause variations.
• Bathing • Conversation
• Drinking alcohol • Exercise
• Moving • Mental tension
• Eating • Temperature changes
• Thinking • Breathing
• Smoking etc.
Systolic
Diastolic
160
140
120
100
80
60
12 6 0 6 11
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About the Unit
The cuff is designed to fi t arm sizes
between 22 and 32cm (8.7 to 12.6 inches).
access for power supply
Cuff
POWER Button
LCD-Display
MEMORY Button
Tubing
MEMORY GROUP
BUTTON
Mode
Selection Switch
USB connector
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About the Unit
Function Descriptions
The Geratherm desktop 2.0 has a combination of 2
measuring methods in one measuring procedure – the
so-called „Double Check Technology“ (DCT). This intelligent measuring method measures the blood pressure values during infl ation and defl ation and guaran-
tees excellent measuring results and highest accuracy.
For rapid measuring results you can switch to the established “fuzzy logic” mode (measurement during release of pressure only).
The blood pressure monitor provides a USB connector
plus analysis software, enabling easy transfer to the
computer and evaluation of the blood pressure values.
Furthermore Geratherm desktop 2.0 has arrhythmia
detection (pulse arrhythmia detection), 50 memory
locations for 2 persons, WHO classifi cation (classifi -
cation of blood pressure values as per World Health
Organisation standards) and backlight of display.
Explanation of Display Symbols
Date
Systolic
Pulse
Indicator
Diastolic
Low Battery
Indicator
Memory
Clock
IPD (irregular pulse detection)
WHO classifi cation
indicator
Puls Rate
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Installing/Replacing Batteries
1. Insert the batteries into the battery compartment
matching correct polarities “+” and “-”.
2. Replace all batteries if the low battery indicator appears.
3. Remove the batteries if the unit will not be used for
a long period of time.
Note:
It is recommended that the same type of alkaline batteries be used to avoid incompatibility.
Keep batteries away from small children.
Do not throw batteries into fi res: they could ex-
plode.
Preparation for Use
4 type „AA“
batteries
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Preparation for Use
Attaching the Pressure Cuff
1. Wrap the cuff around the left arm. The arm should
be bare.
2. Fasten the cuff. Don’t pull it too strongly or make
the cuff too tight. The edge of the cuff should be
approximately 1 inch from the crease of your elbow.
3. Attach the cuff on the right arm as shown in the fi g-
ure if it is not possible to measure on the left arm.
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Measuring Posture
1. Sit upright and ensure that the cuff is at heart level.
Relax and retain a natural posture during measurement.
2. Measure and record blood pressure at the same
time every day
to establish your
blood pressure
pattern.
AC Adapter (accessory)
Use the device only with a medical approved stabilized
AC adapter (Input: 100 ~ 240 V, AC, 60/50 Hz; Output:
6 V, DC, 800 mA).
Note:
1. No batteries are required during operation using the
AC adapter.
2. If AC adapter power is interrupted during measurement, the device must be reset by disconnecting
the AC adapter from the device.
3. Only use medical approved adapters that comply
with the specifi cations in this manual. Using other
adapters could cause damage your blood pressure
monitor.
Preparation for Use
AC-Adapter
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Operations
Setting the Clock and Date
With the unit switched off, press
the MEMORY button until the display shows a blinking year.
Press the START button to adjust
the year while it is blinking.
Then press the MEMORY button
again; the month will appear and
blink. Adjust the month using the
START button.
Repeat these operations for entering date, hour and minute.
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Measuring Blood Pressure
You may choose between 2 measuring modes:
fuzzy logic (measurement during defl ation) and Dou-
ble Check Technology (measurement during infl ation
and defl ation). Select prefered measuring mode using
the buttons on the side of the unit.
Press the MEMORY GROUP button to choose the
desired memory group where you would like to store
the measuring values (the default setting is memory
group number 1).
You may also select or change the memory group by
pressing the button after measurement (values are
shown on the display).
Press START to start measur-
ing.
Operations
Initial display Pumping
Measurement Displaying the result
fuzzy logic Double Check Technology
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Operations
Recalling Memory Values
Press the MEMORY GROUP button to choose the desired memory group.
Press MEMORY to recall the last stored measurement
value.
Press MEMORY again to go to previous memory values.
When the measurement is completed, the display will
show the measured blood pressure values, pulse rate,
memory group, date/time and WHO color classifi ca-
tion.
Press START to turn off the unit. Otherwise it will turn
off automaitcally after about 150 seconds.
As regards the WHO classifi cation, please read on
page 34.
Note:
If the symbol “
” appears, it means the unit has
detected irregular pulse during measurement. If the
symbol appears regularly please consult a qualifi ed
physician for professional advice.
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Erasing Memory Values
You may erase one or all memory values.
Erasing one memory value
1. Press the MEMORY GROUP button to choose the
desired memory group.
2. Press and release MEMORY to display the memory values. Press and release MEMORY again to
choose the memory value that you wish to erase.
3. Press and hold the START button until the display
shows “dEL”.
4. Press and release the START button again. The
unit erases the memory value after the third beep.
Erasing all memory values
1. Press the MEMORY GROUP button to choose the
desired memory group.
2. Press and release MEMORY to display the memory
values.
3. Press and hold the START button until the display
shows “dEL”.
4. Press MEMORY and display shows “dEL ALL”.
5. Press and hold START. The unit erases all memory
values after the third beep.
Data Transfer and Analysis via desktop 2.0 Software
The software and the instructions you will fi nd on our
homepage via the following link:
http://geratherm.de/diagnostik/downloadbereich/
Operations
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Do not drop the unit. It is
not shock-proof.
Do not modify or disassemble the unit or the
arm cuff.
Do not twist the arm
cuff.
Use a cloth moistened
with water or neutral
detergent to clean the
body of the unit and
then wipe it dry.
Care and Maintenance
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Care and Maintenance
Avoid thinner, benzine,
and other harsh cleaners.
Keep the unit in a suitable place.
Avoid high temperature,
direct sunlight,
high moisture, and dust.
Remove the batteries if
the unit will not be
used for a long time.
Do not press the START
button if the cuff has not
been properly wrapped
around the arm.
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Messages
Corrections
The pressure measured was lower than
20 mm Hg.
Please measure
again.
The pressure measured was higher than
300 mm Hg.
Please measure
again.
Pumping error.
Please check
cuff and try again
The pressure can not
be measured due to
signal noise.
Please measure
again.
The pumping
pressure is higher
than 300 mm Hg.
Please measure
again.
Low battery.
Check and replace
the 4 batteries if
necessary.
Error Messages
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Model no. GP-6630
Display System Liquid Crystal Display
Measuring Method Oscillometric method
Infl ation Centrifugal micro-pump
Pressure Exhaust Electric solenoid valve
Power Source 4 alkaline “AA“ type batteries
(1.5 V) or AC/DC adapter
Input: 100 ~ 240 V, AC, 60/50 Hz
Output: 6 V, DC, 800 mA
Measuring Range Blood pressure measuring
range: 20 - 300 mm Hg
Heart pulse rate range:
40 - 200 pulse beats/min
Accuracy ±3 mm Hg (blood pressure)
±5 % (pulse rate)
IP classifi cation IP 20
Memory 2 x 50 memory values with
date and time displayed
Low Battery Indicator yes
Battery Life around 250 measurements
Auto Power-Off after 150 sec.
Operating Environment +5 °C - +40 °C; RH < 90 %
Storage Environment -20 °C - +55 °C; RH < 90 %
Dimensions 168 mm x 140 mm x 64 mm
Weight 484 g (incl. batteries)
Specifi cations
Specifi cations are subject to change without notice
for purposes of product improvement.
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Observe the applicable regulations when disposing of
the device and batteries.
This product must not be disposed of together with
domestic waste.
All users are obliged to hand in all electrical or electronic devices, regardless of whether or not they contain toxic substances, at a municipal or commercial
collection point so that they can be disposed of in an
environmentally acceptable manner.
Please remove the batteries before disposing of the
device/unit.
Do not dispose of old batteries with your
household waste, but at a battery collection
station at a recycling site or in a shop.
Disposal
Geratherm® is certifi ed in accordance with Council Di-
rective 93/42/EEC and EN ISO 13485 and is entitled to
affi x the CE-mark (Notifi ed Body: TÜV Rhein-
land LGA Products GmbH).
The blood pressure monitor conforms to
• EN 1060-1 (Non-invasive sphygmomanometers
part 1: General requirements)
• EN 1060-3 (Non-invasive sphygmomanometers
part 3: Supplementary requirements for electromechanical blood pressure measuring systems)
• EN 1060-4 Non-invasive sphygmomanometers,
Part 4: Test procedures to determine the overall
system accuracy of automated non-invasive sphygmomanometers
Quality standard
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Symbol index
Follow the instruction
for use
Type BF Equipment
Keep dry
Batch code
(mm/yyyy; month/year)
Store between 15 %
and 90 % R.H.
Serial number
Store between
-25 °C and +55 °C
Manufacturer
The device must not
be disposed of with
household waste.
Important! Read the
instruction manual!
SN
-25 °C
+55 °C
90 %
15 %
Geratherm Medical AG
Fahrenheitstrasse 1
98716 Geschwenda
Germany
www.geratherm.com
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Annex
Information on electromagnetic compatibility
(EMC)
Electronic devices such as PCs and mobile phones
can lead to the exposure of medical devices in operation to electromagnetic interference from other devices.
This can lead to malfunction of the medical device and
create a potentially unsafe situation.
Medical devices should also not interfere with any
other devices.
The EN 60601-1-2 standard regulates the require-
ments for EMC (electromagnetic compatibility) and
defi nes the levels of immunity to electromagnetic inter-
ference and the maximum electromagnetic emission
levels for medical devices.
This blood pressure monitor, which is manufactured
by Geratherm Medical AG, complies with the EN
60601-1-2 standard in relation to both immunity and
emissions.
However, special precautions should be observed:
please only use the device indoors and not in the vicin-
ity of mobile phones or microwave ovens. In the case
of devices whose maximum power exceeds 2 W, the
minimum distance from your blood pressure monitor
should be 3.3 metres.
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Annex
Guidance and manufacturer´s declaration – electromagnetic emissions
The device is intended for use in the electromagnetic environments listed below, and
should only beused in such environments:
Emissions test Compliance Electromagnetic environment - guidance
RF emissions CISPR 11 Group 1
RF energy is used only to maintain device’s
operation. Therefore, its RF emissions are so
low that it’s not likely to cause any interference in nearby electronic equipment.
RF emissions CISPR 11 Class B
The device is suitable for use in all establishments, including domesticestablishments,
and those directly connected to the public
low-voltage power supply networkthat supplies buildings used for domestic purposes.
Harmonic emissions
IEC 61000-3-2
Class A
Voltage fl uctuations / fl icker
emissions IEC 61000-3-3
complies
Guidance and manufacturer´s declaration – electromagnetic emissions
The device is intended for use in the electromagnetic environments listed below, and
should only beused in such environments:
Immunity test
IEC 60601 –
test level
Compliance
level
Electromagnetic environment guidance
Electrostatic
discharge (ESD)
IEC 61000-4-2
± 6 kV contact
± 8 kV air
± 6 kV contact
± 8 kV air
Floors should be wood, concrete
or ceramic tile. If fl oors are covered
with synthetic material, the relative
humidity should be at least 30 %.
Power frequency
(50/60 Hz)
magnetic fi eld
IEC 61000-4-8
3 A/m 3 A/m
Power frequency magnetic fi elds
should be at levels characteristic of
a typical location in a typicalcommercial or hospital environment.
Recommended separation distances between portable and mobile RF communication
The device is intended for use in an electromagnetic environment where radiated RF
disturbancesare under control. User can help prevent electromagnetic interference by
keeping the device at a minimum distance from portable and mobile RF communications
equipment (transmitters). Below table details the maximum output power of transmitter:
Rated maximum
output power
of transmitters
in Watt
Seperation distance according to frequency of transmitter / m
150 kHz to 80 MHz
d = 1.2 √P
80 MHz to 800 MHz
d = 1.2 √P
800 MHz to 2.5 GHz
d = 2.3 √P
0.01
0.1
1
10
100
0.12
0.38
1.2
3.8
12
0.12
0.38
1.2
3.8
12
0.23
0.73
2.3
7.3
23
For transmitters rated at a maximum output power not listed above, the recommended
separation distance d in metres (m) can be estimated using the equation applicable to the
frequency of the transmitter, where P is the maximum output power rating of the transmitter in watts (W) according to the transmitter manufacturer.
NOTE 1:
At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
NOTE 2: These guidelines may not apply in all situations. Electromagnetic
propagation is affected by absorption and refl ection from structures,
objects and people.
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Annex
Geratherm Medical AG
Fahrenheitstrasse 1
98716 Geschwenda
Germany
www.geratherm.com
Guidance and manufacturer´s declaration – electromagnetic immunity
The device is intended for use in the electromagnetic environments listed below, and
should only be used in such environments:
Immunity test
IEC 60601
– test
level
Compliance
level
Electromagnetic environment - guidance
Portable and mobile RF communications
equipment should be used no closer to any
part of the device, including cables, than the
recommended separation distance calculated
from the equation applicable to the frequency
of the transmitter.
Recommended separation distance:
Conducted
RF IEC
61000-4-6
3 Vrms
150 kHz to
80 MHz
3 Vrms d = 1.2 √P
Radiated
RF IEC
61000-4-3
3 V/m
80 MHz to
2.5 GHz
3 V/m
d = 1.2 √P
80 MHz to 800 MHz
d = 2.3 √P
800 MHz to 2.5 GHz
where P is the maximum output power rating
of the transmitter in watts (W) according to the
transmitter manufacturer and d is the recommended separation distance in metres (m).
Field strengths from fi xed RF transmitters, as
determined by an electromagnetic site survey,
a
should be less than the compliance level in
each frequency range.b
Interference may occur in the
vicinity ofequipment marked
with the following symbol:
NOTE 1: At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE 2: These guidelines may not apply in all situations. Electromagnetic
propagation is affected by absorption and refl ection from structures,
objects and people.
Guidance and manufacturer´s declaration – electromagnetic immunity
a) Field strengths from fi xed transmitters, such as base stations for radio (cellular/cord-
less) telephones and land mobile radios, amateur radio, AM and FM radio broadcast
and TV broadcast cannot be predicted theoretically with accuracy. To assess the
electromagnetic environment due to fi xed RF transmitters, an electromagnetic site
survey should be considered. If the measured fi eld strength in the location in which
the device is used exceeds the applicable RF compliance level above, the device
should be observed to verify normal operation. If abnormal performance is observed,
additional measures may be necessary, such as reorienting or relocating the device.
b) Over the frequency range 150 kHz to 80 MHz, fi eld strengths should be less than
3 V/m.
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