-733
GENERAL
This instruction manual is intended to assist the user for safe and efficient
operation of the wrist type digital blood pressure monitor (hereinafter:
device) model LD-733. The device must be used in accordance with the
procedures described in the manual. It is important to read and understand
the entire manual, especially the section <Tips on taking blood pressure
measurement>.
This device is intended for the non-invasive measurement of systolic and
diastolic arterial blood pressure and pulse rate in adults（age 15 and
above）. Consult the physician if measurement is taken in children or
persons with arrhythmia as errors may occur.
PRINCIPLE OF OPERATION
This device adopts the oscillometric technology with Fuzzy Algorithm
measuring the arterial blood pressure and pulse rate. The wrist cuff is
wrapped around the wrist and automatically inflated by the air pump. The
sensor of the device catches weak fluctuation of the pressure in the wrist
cuff produced by extension and contraction of the artery of the wrist in
response to each heartbeat. The amplitude of the pressure waves is
measured, converted in millimeters of the mercury column, and is displayed
by digital value. Annotation: This device can not provide reasonable
accuracy if used or stored in the temperature or humidity beyond the range
stated in the section <SPECIFICATIONS> of this manual.
NEW LD TECHNOLOGIES USED
Fuzzy Algorithm is the processing algorithm taking into account of the
speciality of individual heartbeats, which provides higher accuracy of
measurement.
1. It is necessary to know that arterial blood pressure is subjected to sharp
fluctuations. The level of the arterial blood pressure depends on many
factors. Generally arterial blood pressure is lower in summer and higher in
winter. Arterial blood pressure changes with atmosphere pressure and is
affected considerably by many factors, e.g. physical loads, emotional
excitability, stress, meals, etc. Medicines, drinking, smoking affects greatly
the level of individual blood pressure. When blood pressure is measured in
hospital, the value is always higher than that at home. The reason is the
tensity and such case is especially serious in given group patients, which
is known as ‘White coat effect’ medically. Blood pressure will raise in low
temperature, so it is better to take blood pressure measurement in room
temperature (approximately 20℃). If this device was stored in low
temperature, it is necessary to leave it in room temperature for at least 1
hour, otherwise the measurement can be inaccurate. Blood pressure does
vary with age and individual, and it is recommended to write down the
readings in blood pressure record daily, then you can check with yourdoc-
tor to find out what is “normal blood pressure” for you.
The illustration is from British Hypertension Society
2.Take measurement under doctor’s instruction for patients with
cardio-vascular diseases. Under no circumstances should you alter the
dosages of any drugs prescribed by your doctor!
3.Accurate measurement of blood pressure may be difficult in serious
arteriosclerosis, weak pulse, or in patients with obvious fluctuation of heart
contraction rhythm. Please consult qualified physician interpret your blood
pressure readings.
4.It is necessary to keep quiet during measurement to get accurate
readings. Measurement should be conducted in quiet environment at room
temperature. Don’t eat or smoke before a measurement.
5.Repeated measurements with interval at 3 minutes are recommended, so
you can calculate the average to get more accurate measurement.
Atherosclerosis patients are required longer interval (10-15 minutes) as
elasticity of patients’ vessels decreased significantly in these diseases.
10-15 minutes interval is also applicable for patients suffering from diabetes
for a long time. FUNCTION OF MEMORY
MEMORY RECALL
1.LD-733 can store 90 sets of readings and will automatically calculate the
average value of the latest 3 readings. When the memory is full (90 sets of
readings are stored), the oldest reading will be replaced by new one.
Memory will not clear away even if power supply is removed;
2.After a measurement is finished or when the device stands by, the user
can press button ‘M’ to recall memory. Press button ‘M’, the display will
show the average value of the latest3
readings as Fig. 5;
3.Press again, the display will show ‘01’,
which means the latest reading, then turns
toanother screen to show readings as
Fig.6;
4.Press again, the display will show ‘02’,
which means the second to the latest
reading…
MEMORY CLEARANCE
After a measurement is finished or when
the device stands by, hold down button ‘M’
for at least 5 seconds, the display will show
‘CLR’ which means the stored reading is
removedas Fig.7.
WHO BLOOD PRESSURE CLASSIFICATION
Standards for assessment of
high or low blood pressure,
regardless of age, have been
established by World Health
Organization (WHO) as show in
the chart as below:For example,
if your blood pressure is
140mmHg (Systolic Pressure),
76mmHg (Diastolic
Pressure),according to the
world health organization
standard, your blood pressure
level is Mild Hypertension
Note:
If the systolic blood pressure and diastolic blood pressure fall into
different categories, the higher value should be taken for classification.
ERROR AND LOW BATTERY INFORMATION
The wrist cuff is put on
wrongly.
Movement of arm (or
hand) or talking during
measurement.
The wrist cuff is not
inflated to necessary
pressure.
Make sure that wrist cuff
is put on correctly and
repeat the measurement.
Repeat the measurement
with following completely
recommendations of
manual.
Repeat the measurement
with pumping wrist cuff to
higher pressure
TABLE OF CONTENT
- NEW LD TECHNOLOGIES USED
2. TIPS ON TAKING BLOOD PRESSURE MEASUREMENT
3. BATTERY INSTALLATION
4. CORRECT POSTURE FOR MEASUREMENT
5. CARRY OUT A MEASUREMENT
- AUTOMATIC INFLATION
1. GENERAL
- PRINCIPLE OF OPERATION
2
2
2
2
3
3
3
4
- RAPID DEFLATION DURING MEASUREMENT
6. FUNCTION OF MEMORY
- MEMORY RECALL
- MEMORY CLEARANCE
7. WHO BLOOD PRESSURE CLASSIFICATION
8. ERROR AND LOW BATTERY INFORMATION
9. CARE, STORING, REPAIR AND RECYCLING
10. TROUBLESHOOTING
11. WARRANTY OBLIGATIONS
12. SPECIFICATIONS
13. BLOOD PRESSURE RECORD
14. QUALITY GUARANTEE
15. REQUIRING RECORD
4
4
4
4
4
4
5
5
6
6
7
7
7
1.Main Body
2.Display
3.Wrist Cuff
4.Button ‘O/I’
5.Button ‘M’
6.Batteries (Optional)
PARTS AND COMPONENTS
1. Open the battery cover and install two ‘AAA’
type batteries into the battery compartment as
indicated. Make sure that the polarity is correct;
2. Close the battery compartment cover.
● Replace the batteries when the replacement
indication “ ” appears in the display or nothing after O/I button is
pressed;
● Batteries in this kit are intended to check work capacity of the device and
the life-span of the batteries can be shorter than the recommended;
● Use R03, LR03 or AAA alkaline batteries, do not use rechargeable
battery;
● Only same type batteries are allowed to use together. Replace all
batteries simultaneously;
● If the device is to be unused for long time, please take out the batteries;
● Don’t leave the worn batteries in the device.
BATTERY INSTALLATION
Sit at the table and let the table support your arm as
you take the measurement. Make sure that the wrist is
at approximately the same level as the heart, and that
the forearm is extended naturally with palm up on the
table. Wrap the cuff around the left wrist as shown in
the illustration, and make sure that the wrist cuff is
attached to the wrist securely with display facing the
user. If your sleeve restricts blood circulation of your
wrist or you roll your sleeve up so as to result in such
restriction. Please take off your clothes to get accurate
measurement if necessary. If measurement on your
left wrist is difficult, you can use right wrist for
measurement.
CARRY OUT A MEASUREMENT
1. Before the measurement, take 3~5 times deep breath and relax yourself.
Don’t talk or move your arm;
2. Press button ‘O/I’, and all symbols will appear on display in 2 seconds
as Fig.1.Then ‘0’ will appear on the screen. The pump begins to inflate
with display showing the reading of pressure. Generally the
pressure will reach 190 as Fig.2;
3. The pump stop inflating and pressure
begins to decrease gradually, during which
the user’s blood pressure and pulse will be
calculated as Fig.3;
4. The air in the wrist cuff will deflate quickly
and the blood pressure reading, pulse
reading will show in the display as Fig.4.
Moreover the measuring time will also
display together in two screens alternately;
5. Press the button ‘O/I’ to return to standby
mode. Please rest for at least 3 minutes for
another measurement. If the device keeps
unused for 3 minutes, the device will be
returned to standby mode automatically.
AUTOMATIC INFLATION
There are 4 given levels of inflation pressure for this device: 190mmHg,
230mmHg, 270mmHg and 300mmHg. When 190mmHg is not enough or
movement of wrist occurs, the device will automatically inflate to
reasonable pressure level to ensure a successful measurement. It is not
a fault.
RAPID DEFLATION DURING MEASUREMENT
If you do not feel well during measurement or want to stop the measure-
ment for some reason, you can press the O/I button. The device will
quickly release the air in wrist cuff and the device will be returned to
standby mode.
1 2 3 4
Fig.1
Fig.7
Fig.2
Fig.3
Fig.4
Fig.5
Fig.6
:
Symbols Meaning
Manufacturer
Authorized Representative in the
CE marking in conformity with EC
Keep dry
Attention, consult accompany-
Type B Applied Part
Symbol for the marking of electrical
and electronics devices according to
Directive 2002/96/EC.
The device, accessories and the
packaging have to be disposed of
waste correctly at the end of the usage.
Please follow Local Ordinances or
Regulations for disposal.
