Little Doctor LD2 - Digital Blood Pressure Monitor Manual

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Instruction manual (15 pages)

Table of Contents

Contents

1 PARTS AND COMPONENTS
2 GENERAL INFORMATION
3 OPERATION PRINCIPLE
4 RECOMMENDATIONS ON CORRECT MEASUREMENT
5 BATTERY INSTALLATION
6 CORRECT POSITION DURING MEASUREMENT
7 CUFF PREPARATION
8 MEASUREMENT PROCEDURE
9 MEMORY FUNCTION
10 ERROR MESSAGES
11 CARE, STORAGE, REPAIR AND DISPOSAL
12 POSSIBLE PROBLEMS
13 TECHNICAL SPECIFICATIONS
14 SYMBOL EXPLANATION
15 Documents / Resources
- 15.1 References
- 15.2 Download manual

Little Doctor LD2 - Digital Blood Pressure Monitor Manual

PARTS AND COMPONENTS

ELECTRONIC UNIT.
SOCKET FOR CONNECTION OF INFLATION BULB AND CUFF.
AIR HOSE.
TEE-CONNECTOR FOR CONNECTION OF INFLATION BULB AND CUFF TO THE ELECTRONIC UNIT.
INFLATION BULB.
INFLATION BULB BACK-PRESSURE VALVE.
PRESSURE RELEASE VALVE.
LCD display.
M (MEMORY) BUTTON.
(POWER ON/OFF) BUTTON.
CUFF.
BAG.
BATTERIES.
WARRANTY CARD.
OPERATION MANUAL.

GENERAL INFORMATION

This Instruction Manual is designed to assist the user with safe and Effective operation of the semiautomatic digital Device for measurement of blood pressure and heartbeat rate, model LD2 (hereafter: DEVICE). Use this Device according to the rules described in this Manual. Operate the Device only as intended. Do not use the Device for any other purposes. Read and understand the whole Instruction Manual, in particular "Recommendations on Correct Measurement".

OPERATION PRINCIPLE

This Device uses the Fuzzy Algorithm oscillometric method of blood pressure and pulse rate measurement. Wrap the cuff around your upper arm and it starts to be infl ated by infl ation bulb. The sensitive element of the Device feels the weak pressure oscillations in the cuff generated by widening and contraction of the brachial artery in response to every heartbeat (the amplitude of the pressure waves is measured, converted into millimeters Hg and shown on the display as fi gures. The Device has 90 cells of memory for storage of measurement results. Remember that the Device will not maintain the mentioned accuracy of a measurement if it is used or stored at a temperature or humidity other than those specifi ed in Technical Specifi cations of this Manual. We warn you about the possibility of mistakes in blood pressure measurement with this Device in persons with pronounced cardiac arrhythmia. Consult the doctor concerning blood pressure measurement of your child.

RECOMMENDATIONS ON CORRECT MEASUREMENT

For correct measurement you should know that THE BLOOD PRESSURE IS SUBJECT TO SHARP VARIATIONS EVEN WITHIN THE SHORT TIME INTERVALS. The blood pressure depends on many factors. It is usually lower in summer and higher in winter. The blood pressure varies together with the atmospheric pressure, depends on physical loads, emotional excitement, stresses and dietary regime. Drugs, drinking alcohol and smoking produce signifi cant Effect on blood pressure. Even the very procedure of blood pressure measurement in a hospital sends the blood pressure high in many people, thus, the blood pressure measured at home often diff ers from the values received in a hospital. As the blood pressure tends to rise at low temperatures, make measurements at an indoor temperature (approximately 20°C). If this Device was stored in the room with low temperature, keep it for at least 1 hour at an indoor temperature before use, otherwise the measurement result may be incorrect. During the day, the diff erence in readings for healthy people may be 30-50 mmHg of systolic pressure and to 10 mmHg of diastolic pressure. The dependence of the blood pressure on various factors is individual for each person. Accordingly, it is recommended to keep a special book with blood pressure measurement records. ONLY A CERTIFIED DOCTOR IS CAPABLE TO ANALYZE THE TENDENCY OF YOUR BLOOD PRESSURE VARIATIONS USING YOUR RECORDS.
People with cardiovascular and some other diseases requiring blood pressure monitoring should make measurements in the hours fi xed by attending doctor. REMEMBER THAT THE DIAGNOSTIC AND ANY TREATMENT OF HYPERTENSION MAY BE CONDUCTED ONLY BY A CERTIFIED DOCTOR ON THE BASIS OF BLOOD PRESSURE VALUES OBTAINED BY THIS DOCTOR. DRUGS PRESCRIPTION SHOULD BE CARRIED OUT ONLY BY YOUR ATTENDING DOCTOR.
At such disorders as deep vascular sclerosis, weak pulse wave and also in patients with the prominent distortions of cardiac rhythm it may be diffi cult to measure the blood pressure accurately. IN SUCH CASES CONSULT A CERTIFIED DOCTOR ABOUT APPLICATION OF THE ELECTRONIC DEVICE.
KEEP QUIET DURING A MEASUREMENT TO OBTAIN THE ACCURATE VALUES OF YOUR BLOOD PRESSURE WITH THE ELECTRONIC DEVICE. Measure your blood pressure in the calm and comfortable conditions at the indoor temperature. No eating an hour before measurement; no smoking, no taking tonic agents or alcohol 1.5-2 hours before measurement.
The accuracy of blood pressure measurement depends on whether the cuff matches the size of your arm. THE CUFF SHOULD NOT BE TOO SMALL OR TOO LARGE.
Wait 3 minutes between measurements for the blood to restore its circulation. However, the persons with prominent atherosclerosis due to considerable loss of vascular elasticity may need to increase the wait time between measurements (10-15 minutes). This also refers to the patients suff ering from diabetes. For more accurate determination of blood pressure, it is recommended to make a series of 3 consecutive measurements and to use the average value.

BATTERY INSTALLATION

Open the cover of the battery compartment and install 4 "AA" size batteries according to polarity marked inside the compartment. Do not use much force to remove the cover of the battery compartment.
Close the battery cover.
Replace all batteries when the Low Battery Indicator "", appears on the screen or when there is no indication on the screen. The Low Battery Indicator does not show the discharge level. It is recommended to use alkaline batteries. If the Device operation rules are observed, the batteries will last for approximately 1,000 measurements. The batteries supplied with the Device are intended for check of the Device performance at sale and their service life may be shorter than of the recommended batteries. Replace all four batteries at the same time. Do not use the waste batteries. If the Device is unused for a long time, remove all batteries. Do not leave the waste batteries in the Device.

CORRECT POSITION DURING MEASUREMENT

Sit near a table so that your arm rests on its surface during measurement. Make sure that the point of the cuff application is approximately at the same height as your heart, and that your forearm lies freely on the table and does not move.
You can measure pressure when lying on your back. Look at the ceiling, keep calm and do not move during measurement. Make sure that the measurement point on your upper arm is approximately at the same level as your heart.

CUFF PREPARATION

Insert the cuff end for about 5 cm into a metal ring as shown in fi gure.
Apply the cuff to your left upper arm so that the air tube is directed to your palm. If the measurement on your left arm is diffi cult, you may use your right arm. In this case remember that the readings may diff er by 5-10 mmHg and even more.
Wrap the cuff around your upper arm so that the bottom of the cuff is approximately 2-3 cm above your elbow. The sign "ARTERY" should be over the arm artery.
Fix the cuff so that it fi ts tightly to the arm, but make sure that it is not overtight. Too tight or too loosen placement of the cuff may give inaccurate readings.
On the fi xed cuff the sign «INDEX» should point to the area «NORMAL (25-36 cm)».It means that the cuff is chosen correctly and fi ts the size of your upper arm. if the sign points to the area marked «» the cuff is too small and the readings will be higher. If the sign points to the area marked «» the cuff is too large and the readings will be lower.
If the arm has a conic form, the cuff should be put on with a spiral movement as shown in the fi gure.
If the rolled-up sleeve squeezes the arm interfering with free blood fl ow the Device may give inaccurate fi gures not corresponding to your actual blood pressure.

MEASUREMENT PROCEDURE

Insert the Air Tube Plug into the Cuff Jack. Make 3-5 deep inhales and exhales before taking a measurement and relax. Do not move, do not speak and do not toughen your arm.
Press button.
The display will show all symbols for a short time (Fig. 2), you will hear two short acoustic signals. After the acoustic signal, "0" is displayed, and the "" marker starts blinking. This means that the Device is ready for measurement (Fig. 3).
Pump the cuff by pressing the infl ation bulb to the pressure 30-40 mmHg higher than your expected systolic (upper) pressure. The value of the pressure in the cuff is constantly displayed in the Device screen. If the sum of the expected systolic (upper) pressure plus 30-40 mmHg is lower or equals to 190 mmHg, you can pump the cuff until you hear an acoustic sound for convenience (the Device emits an acoustic sound if the pressure in the cuff is 190 mmHg).
IF THIS SUM IS HIGHER THAN 190 MM HG, KEEP PUMPING THE CUFF AFTER THE ACOUSTIC SIGNAL TO THE REQUIRED PRESSURE, WHILE OBSERVING THE READINGS IN THE DISPLAY. DO NOT PUMP THE PRESSURE IN THE CUFF OVER 300 MM HG, AS THIS WILL EXCEED THE MAXIMUM MEASURE- MENT LIMIT OF THE DEVICE. UPON REACHING THE PRESSURE OF 300 MM HG, YOU WILL HEAR AN INTERMITTENT ACOUSTIC SIGNAL.
After reaching the required pressure in the cuff, stop pressing the infl ation bulb and carefully put it on the table.
Pressure in the cuff will start decreasing automatically, and you will see the marker in the screen.
If the "" appears during pressure release, the cuff was not pumped to the required level. For 4 seconds, pump the cuff for 30-40 mmHg higher than the previous value. Otherwise, the error message "" will appear on the display.
Pressure measurement is done while the symbol blinks. Try to stay immobile and not to move your arm during measurement.
IF THE "" MARKER APPEARS ON THE DISPLAY, STOP THE MEASUREMENT AND COMPLETELY RELEASE THE PRESSURE IN THE CUFF BY PRESSING THE PRESSURE RELEASE VALVE. TAKE THE CUFF OFF AND LET YOUR ARM REST. REPEAT THE MEASUREMENT WITH FULL ABIDANCE OF THIS OPERATION MANUAL.
When the measurement ends, you will hear a continuous signal, and readings of your pressure and pulse will appear in the display (Fig. 4). Blinking "" symbol in the display indicates irregular pulse rhythm. Appearance of the arrhythmia indicator may also be caused by movement during measurement. If the "" symbol appears periodically, contact your consulting physician.
Release the residual pressure in the cuff by using the pressure release valve.
For repeated measurement, simply start pumping the cuff again. TO OBTAIN AN ACCURATE RESULT, YOU NEED A BREAK BETWEEN MEASUREMENTS TO RESTORE BLOOD CIRCULATION. FOR THIS REASON, DO NOT PERFORM REPEATED MEASUREMENT SOONER THAN IN 3 MINUTES. If power is not off and the Device is not used for 3 minutes, it will switch off automatically.
Press button.

MEMORY FUNCTION

The result of each measurement (pressure and pulse) is automatically recorded into the Device memory. MEASUREMENT RESULT WILL NOT BE SAVED, IF THERE WAS AN ERROR MESSAGE.
The Device memory can store up to 90 measurement results and the average value of 3 last measurements. When the number of measurements exceeds 90, the oldest data will be automatically replaced with the new measurement data.
You can view the contents of the Device memory by pressing the M button. When you press the M button for the fi rst time, you will see the average value of three last readings stored in the Device memory with the "А" index. When you press the M button again, you will see the "1" index (number of memory cell) for a short time, after which the result of the last measurement will appear (Fig. 5).
Each consecutive pressing of the M button will increase the cell number index with further display of the contents of the indicated memory cell.

CLEARING THE DEVICE MEMORY
To delete all measurement results saved in the Device, press the M button and hold it for over 5 seconds. "Clr" symbols will be displayed in the screen and clearing of the entire Device memory will take place.

ERROR MESSAGES

INDICATION	POSSIBLE CAUSE SOLUTION	REMEDY
	The cuff is put on incorrectly or the air tube tee connector is inserted loosely. Measurements could not be done because of the arm movement or talking during measurement. The cuff was not pumped to the required level. In case of apparent heart rhythm disorders, deep vascular sclerosis, weak pulse wave, correct measurement of blood pressure may be hindered.	Make sure the cuff is put on correctly, and the tee is inserted tightly, and repeat the measurement procedure. Repeat the measurement with full observation of the recommendations of this operation manual. Repeat the measurement, pumping the cuff 30-40 mmHg higher than the expected systolic pressure. In these cases, you should consult a certifi ed physician about the use of the electronic Device.
	Batteries are discharged	Replace all batteries with new ones

CARE, STORAGE, REPAIR AND DISPOSAL

This Device should be protected from increased humidity, direct sunrays, impact, vibration. THE DEVICE IS NOT WATER-PROOF!
Do not store and do not use the Device in close proximity to heating Devices and open fi re.
If the Device is not used for a long time, remove the batteries from the Device. Battery leakage may damage the Device. KEEP THE BATTERIES AWAY FROM CHILDREN!
Do not contaminate the Device and protect it from dust. You can use soft dry cloth to clean the Device.
Avoid contact of the Device or its parts with water, solvents, alcohol. Do not use petroleum.
Protect the cuff from sharp object, and do not try stretching or twisting the cuff.
Do not expose the Device to strong impacts and do not drop it.
The Device does not have any measurement accuracy controls. Individual disclosure of the electronic unit is prohibited. If necessary, the repair shall be performed only in specialized organizations.
After the end of the established service life you should periodically contact experts (specialized repair organizations) to check the technical condition of the Device.
Disposal is governed by the rules in Effect in your region. The manufacturer does not establish any special disposal conditions for this Device.
The cuff is resistant to repeated sanitary treatment. It is allowed to treat the inner side of the cloth surface of the cuff (the one contacting with the patient's arm) with a cotton wool pad damped in 3% hydrogen peroxide solution. In case of continuous use, partial decoloring of the cloth surface of the cuff is admissible. Wet wash of the cuff, as well as its treatment with a hot iron, is not allowed.

POSSIBLE PROBLEMS

PROBLEM	POSSIBLE CAUSE SOLUTION	REMEDY
No image on display after pressing the button	Batteries are discharged. Polarity of batteries is not observed. Battery contacts are contaminated.	Replace all batteries with new ones. Install the batteries correctly. Wipe the contacts with a dry cloth.
Blood pressure is diff erent every time. Measurement values are too low (too high).	Is the cuff located at the heart level? Was the cuff put on correctly? Is your hand relaxed? Maybe you were talking or moving your hand during measurement.	Take the correct pose for measurement. Put the cuff on correctly. Relax before measurement. Keep quiet and calm during measurement.
Pulse rate value is too high (too low).	Maybe you were talking or moving your hand during measurement. Were the measurements done after a physical load?	Keep quiet and calm during measurement. Repeat measurement after at least 5 minutes.
Independent switching off.	Automatic switch off system activates. This is not a failure. The Device switches	off automatically 3 minutes after the last measurement.

TECHNICAL SPECIFICATIONS

Method of measurement	oscillometric with Fuzzy Algorithm technology
Indicator	LCD, three-line
Pressure indication range in the cuff, mmHg	0 to 300
Measurement range: pressure in cuff, mmHg pulse rate, 1/min	40 to 260 40 to 160
Measurement error: pressure in cuff, mmHg pulse rate, %	±3 ±5
Power voltage, V	6
Power supply type:	4 AA batteries (LR6)
Max. power consumption, W	0,09
Memory	Last 90 measurements + average value of last three measurements
Operation conditions: temperature, °C crelative humidity, % Rh	10 to 40 85 and lower
Storage and handling conditions: temperature, °C relative humidity, % Rh	minus 20 to 50 85 and lower
Cuff size:	extended adult (upper arm circumference 25-36 cm)
Dimensions: Size (digital unit), mm Weight (without packaging, bag and batteries), g	121 x 84 x 64 303
Package contents	digital unit, Cuff -LDA (assembly with tubes and tee), LD-S035 infl ation bulb assembly (with pressure release valve and back-pressure valve), 4 batteries, bag, operation manual, warranty card, package.
Year of manufacture	The year and month of manufacture are indicated on the bottom part of the housing in the serial number after the "A" symbol

SYMBOL EXPLANATION

	Compliance with the Directive 93/42/EEC
Important	Read the instruction
	Representative in the EU
	Manufacturer
	Ukraine conformance mark
	Approval of means of measurement types of Ukraine
	Keep from moisture
	Protection class II
	BF type product

The revision date of this Operation manual is indicated at the last page in the EXXX/YYMM/NN format, where YY is the year, ММ is the month, and NN is the revision number. Technical specifi cations are subject to change without prior notice in order to improve operational properties and quality of the product.
Production is certifi ed according to the international standard ISO 13485. The LD2 Device complies with the European Directive MDD 93/42/ЕЕС, international standards EN980, EN1041, EN1060-1, EN1060-3, EN10601-1-2, ISO 14971.

WARRANTY
The warranty liabilities are contained in the warranty card given at the sale of this Device to a purchaser. The addresses of organizations for warranty maintenance are given in the warranty card.
Manufactured under control and for Little Doctor International (S) Pte. Ltd. (35 Selegie Road #09-02 Parklane Shopping Mall, Singapore 188307, postal address: Yishun Central P.O. Box 9293 Singapore 917699).
Manufacturer: Little Doctor Electronic (Nantong) Co. Ltd. (No. 8, Tongxing Road Economic & Technical Development Area, 226010 Nantong, Jiangsu, People' s Republic of China).
Distributor in European Union: Little Doctor Europe Sp. z o. o. (57G Zawila Street, 30-390 Kraków, Poland, phone: +48 12 2684746, 12 2684747, fax: +48 12 268 47 53, e-mail: biuro@littledoctor.pl)
For more information please visit www.littledoctor.sg