MinttiHealth Smartho-D2 User manual

Web：www.minttihealth.com
Tel：[phone]
E-mail：[e-mail]
■ Version：A1
■ No.：WI-smartho-D2-0015
■ Edition Date: 2021/03/22
Suzhou Melodicare Medical Technology Co., Ltd.

Electronic Stethoscope
Electronic Stethoscope
User Manual

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Electronic Stethoscope
User Manual
Contents
Foreword .............................................................................................04
Instruction for Use ..............................................................................13
Product Speci󽗉cation ........................................................................16
Maintenance and Warranty ...............................................................18
Appendix ..............................................................................................21
Packaging Information.......................................................................29

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04 User Manual
Foreword
Thank you for choosing the smartho-D2 Electronic Stethoscope.
The Model smartho-D2 gives you the best experience of auscultation
and wireless electronics technology which is also easy to use.
It works well no matter you are using it to auscultate infant, young
kid or adult; no matter you are in quiet or noisy environments.
The cutting-edge technologies that have been built into the Model
smartho-D2 will guarantee you the best quality.
Don't miss out the wonderful 'sound' you need to hear.
Safety Information
Please carefully read and follow all safety information in the user
manual before using the electronic stethoscope, keep the user
manual for future reference.

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User Manual
U.S.A. Only
Caution: Federal laws restrict the sale from the physician.
Safety-related Labels and Symbols Description
Fragile -do not drop, to reduce the impact of the
stethoscope components.
This side up, Do not put the stethoscope upside
down.
Stacking layer limit, in order to reduce the risk, do
not exceed the stacking layer number.
Keep dry, do not place in a humid and rainy
environment.
Keep from sunlight, do not expose to the sun.
This product contains electrical and electronic
components, standard handling and garbage
collection are not permitted.
Refer to local instructions for disposal of electrical
and electronic equipment.
Name and address of manufacturer.
SN Product serial number.
5

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06 User Manual
Safety-related Labels and Symbols Description
Date of manufacture
Please refer to the manual
BF application part
Level of protection of electrical equipment housing
against foreign body intrusion
EC Representative
CE mark
Rx Only For prescription use only
MR MR unsafe
Explanation of Signal Words
CAUTION Indicates a dangerous situation, there might be
minor injury and/or adverse damage.
NOTICE There might be property losses in dangerous
situations.

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CAUTION
Before using the device, please have a careful look at the user
manual and follow the safety instructions.
1.External equipment intended for charging shall comply with
relevant IEC standard (e.g., IEC 60601 series for medical electrical
equipment). If not, please contact quali󽗉ed technician or your local
representatives.
2.Charge before the 󽗉rst use. No other operation is allowed when
being charged.
3.Handle it with care. Otherwise, there might be damages or other
errors.
4.Use it strictly as instructed in the manual.
5.Test the model in a quite environment, stay as calm as possible
during measurement to have reliable data.
6.Power down the stethoscope if unused. If it runs out of battery,
please recharge before use. It is recommended to charge once a
month to maintain the battery life.
7. Do not repair the stethoscope by yourself if there is any problem.
Please ask for the professional advice from our customer service
department, the consultant will be able to provide further
examination or replacement.
8. Do not throw the device into the 󽗉re, otherwise the battery may
explode.

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08 User Manual
9. Avoid extreme temperatures, humidity, solvent, and grease to
prolong the battery life.
10. Adapter with EMC accreditation is recommended.
11. No regular maintenance is needed. If necessary, please contact
our customer services department for technical support.
12. Check before use and make sure the equipment is safe to use.
13. If some parts are damaged or lost, you can contact the customer
service department to purchase the part that you need.
14. Follow instructions in the manual for cleaning and disinfecting
advice.
15. Avoid using stethoscopes close to strong radio frequency signals
or mobile radio frequency devices.
16. If you heard abnormal noise, stay away from any radio
transmitting antenna.
17. In order to reduce the risk associated with incorrect result, please
follow the instruction in the manual. There is a sound ampli󽗉cation
mode (three gears) which can be adjusted by the sound button in
the stethoscope.
18. Do not press the device by a force larger than 10N to avoid
damage.
19. Store the device out of strong sunlight or any substances which
may cause corrosion and keep it in a ventilated space.
20. Avoid dropping the device from the table or pocket.
21. Do not use the device when you are close to other electronic
equipment such as cell phone, transceiver, or radio control products.
22. Only use veri󽗉ed accessories and replacement parts sold by the
manufacturer of the equipment.

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Security:
Notice
1.Choose the secured network for privacy.
2.Download anti-virus software and open the system automatic
patch upgrade.
3.Set the access password to ensure data security.
4.Pay attention to private data when sharing with others.
5.Delete the local data if you don't use the APP anymore.
To reduce the risk associated with the environment, the stethoscope
and battery should be properly disposed or recycled in accordance
with the local regulations.
This device is not allowed to be disassembled and modi󽗉ed. Only
companies authorized by Suzhou Melodicare Medical Technology
Co., Ltd. can repair the stethoscope. Read and follow all the safety
information in the user manual.

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EMC conforms to Europe
EMC Compliance
Intended Use
This device compliels with Part 15 of the FCC Rules, the operation of
this device complies with following two conditions:
(1)The equipment will not cause toxic interference.
(2)This device must accept any interference received, including
interference that may lead to poor operation.
The equipment shall not be modi󽗉ed without the consent of our
company. Unauthorized modi󽗉cations may result in inaccurate
results.
The Electronic Stethoscope is used for the detection and
ampli󽗉cation of sounds from the heart, lungs and other internal
organs within selective frequencies.
It can only be used for people who undergo a physical assessment
for medical diagnostic purpose.
Patient Pro󽗉le: There is no age limit.
User Pro󽗉le: There is no user identi󽗉cation for the device. It can be
used by experts or non-specialists.
The device complies with electromagnetic compatibility
requirements of the international standard IEC60601-1-2.

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Brief Introduction
Function Description
Serial Number
The smartho-D2 Electronic stethoscope uses acoustic sensor to
convert the analog signal into the digital signal of auscultation
which will improve the quality of auscultation results by increasing
signal ampli󽗉cation.
This manual provides detailed information on how to operate
smartho-D2 electronic stethoscope, no additional training is
required.
Each smartho-D2 electronic stethoscope has a unique serial number
for identi󽗉cation, please record the serial number in this manual or
the device for future reference:
The smartho-D2 electronic stethoscope can be used to auscultate
sounds, such as heart and lung sounds after amplifying the sound
by headset.
The stethoscope consists of 󽗉ve buttons and an OLED display
screen. The sound system uses a digital signal processor, and the
stethoscope is powered by the rechargeable built-in lithium battery
including power management system to extend battery life. The
stethoscope can transmit auscultation data to external devices
(such as mobile phones, computers) via Bluetooth and wireless
connection.

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Instructions for Use
Manual Turn on: When the device is o󽗈, press the power button. The
OLED display will be activated which means the device is on, and
you will see the home interface.
Manual Turn o󽗈: When the device is on, press the power button for
two seconds. When the OLED display shuts o󽗈, it means the device
is o󽗈.
The battery information is displayed by the OLED screen. The
screen is black if the battery is full. The blank in the battery grid
indicates that the device is running out of battery and will need to
be charged in time. The smartho-D2 electronic stethoscope uses
the rechargeable lithium battery which can be continuously used
for more than 60 hours after each full charge. When the device
is charging, place the device on the base and use the USB cable
to plug the 5V adapter on the other end or directly plug into the
computer USB interface. Then, you will see the charging interface of
the device.
When charging, place the device on the base, plug in the charging
cable on one end, plug in 5V adapter on the other end or directly
plug into the charging port of computer.
When full charged, the charging interface will be o󽗈 and the device
will be in the shutdown status.
1.Turn on/o󽗈
2.Monitor battery information
3.Battery charging

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When the device is running out of battery, the stethoscope can't
work. Please charge in time and keep the equipment dry and clean
when charging.

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There are two kinds of auscultation modes (heart sound mode, lung
s o u n d m o d e ) , t h e s w i t c h o f a u s c u l t a t i o n m o d e c a n b e d o n e i n t w o
ways:
1)In the main interface, press "return / mode key", the mode can be
switched;
2) In the menu interface, select the auscultation mode and you will
see the current mode under the main interface.
The volume of the auscultation signal could be adjusted. There are
two ways to adjust the volume:
1) On the home interface, press "Menu +/Volume+" "Menu-/
Volume-";
2) Or press sub- menu button on the menu page.
The backlight under the menu page adjusts the brightness of the
display. The factory default is 80%. The OLED system will have the
backlight brightness during long standby time.
The hand-held stethoscope should be placed in the marked red
circle of the body picture to hear lungs, heart sounds. (as shown
below) Each time the auscultation time should be longer than 30
seconds.
4.Mode Switch
5.Adjust Volume
6.Adjust Display Brightness
7. Monitor Patient Heart Rate

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Location when
Heart sound
detection
Location when
Lung sound
detection

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Product Speci󽗉cation
ITEM Parameter
Battery Speci󽗉cations
Battery Type 3.7V/2000mAh lithium-ion polymer battery
Battery Operation Time 60 Hours
Battery Use-life 300 cycles
Charging Time 4 hours
Technical Speci󽗉cations
Binaural headset YES
Chest-piece YES
Sound processing Digital signal processor
Display Screen 1.3' OLED
Low Battery Indicator YES
Automatic Power O󽗈 No
Volume Control 1-3 level
Sound Ampli󽗉er Ampli󽗉es up to 4X
Signal Sampling Rate 8 kHz
Frequency Response Heart Sound Mode:20-500Hz
Lung Sound Mode:200-2000Hz
Total harmonic distortion ＜ 3%
Sound Attenuation 100-500Hz: ≦ 12dB
500-1000Hz: ≦ 20dB

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Intuitive keypad NO
Direct Listening Only transferred via headset
Recording and Playback Not on the device itself
Wireless Technology Bluetooth® at 2.4GHz
Dimension Ø58mm×78mm
Safety Classi󽗉cation
Electric Shock Protection Type
Internal power supply equipment (A
rechargeable 3.7V/2000mAh
lithium-ion polymer battery), or Input
0.2A/5VDC
Electric Shock Protection Level BF
Liquid Access Proof Level IP22
Bluetooth Speci󽗉cation
Version Bluetooth® 4.0
RF frequency 2.4GHz
Maximum Output Power -20-4dBm
Frequency Range 2402-2480 MHz
Transmission rate 1Mbps
Single -channel bandwidth 1Mbps
Transmission Distance(Max.) 3m
Normal working conditions
Ambient temperature: +5℃ ~+40℃；
Relative humidity: 0%RH~80%RH；
Atmospheric pressure:
860hPa~1060hPa
Storage and transportation conditions
Ambient temperature: -40℃ ~+55℃；
Relative humidity: 0%RH~93%RH；
Atmospheric pressure:
860hPa~1060hPa
Note:The Sound Attenuation is the essential performance.

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Maintenance and Warranty
The stethoscope should be cleaned every time after use.
Cleaning method: It is not recommended to disassemble the
stethoscope base and the upper cover for cleaning. The contact
parts of the stethoscope outer casing should be wiped clean with
alcohol pads.
You can use alcohol pads to wipe the mylar, top cover, the outer
casing and silicone rubber sleeve of the stethoscope.
Note: The stethoscope should not be disinfected by yourself.
Excessive liquid during cleaning may cause liquid entering the
internal components. Please keep it dry and clean before each use.
The quality of the device is guaranteed for 12 months from the
date of purchase. The smartho-D2 electronic stethoscope provides
excellent service and warranty policies. If there are quality problems
during the warranty period, the device will be repaired free of
charge. (Except the accidental damage)
Please send the stethoscope directly to the Suzhou Melodicare
Medical Technology Co., Ltd. or the local authorized distributor for
maintenance and repairment information.
1.Cleaning
2.Service and Warranty

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Maintenance & Service Card
Model Products name
Serial No. Manufacturer
Price Acceptance
Date of
manufacture
Date of
purchase
Date of
Maintenance
& Service
Maintenance
Instructions
Maintenance
Cost
Maintenance
Person