Guangzhou Longest Science and Technology LGT-233 Portable Electro-Stimulation Therapy Device User Manual

Guangzhou Longest Science & Technology Co., Ltd. Portable Electro-Stimulation Therapy Device Users Manual

Users Manual

1
TABLE OF CONTENTS
Foreword.................................................................................................................................................................. 2
Safety Instructions.................................................................................................................................................. 4
EMC Guidance......................................................................................................................................................15
Clinical Instructions...............................................................................................................................................23
Working Principle.................................................................................................................................................. 25
Inspection of the Goods....................................................................................................................................... 26
Overview of the Unit............................................................................................................................................. 28
MStim Drop Application........................................................................................................................................33
Operation Guidance............................................................................................................................................. 55
Care and Maintenance.........................................................................................................................................60
Troubleshooting.....................................................................................................................................................64
Technical Specifications.......................................................................................................................................67
Assistance..............................................................................................................................................................70
Warranty.................................................................................................................................................................71
2
Foreword
Thank you for purchasing the MStim Drop LGT-233 from our company.
This manual has been written for the owners and operators of the MStim Drop LGT-233. It
contains general information on the instructions for safety, intended use, working principle, operation,
maintenance, troubleshooting, and warranty. In order to maximize the use, efficiency, and working life
of your unit, please read this manual thoroughly and become familiar with the controls, as well as the
accessories, before operating the unit.
Specifications put fifth in this manual were in effect at the time of publication. However, owing to
policy of continual improvement by Guangzhou Longest Science & Technology Co., Ltd., any changes
to these specifications may be made at any time without obligation on the part of Guangzhou Longest
Science & Technology Co., Ltd.
Before administering any treatment to a patient, the user of this equipment should read,
understand, and follow the information contained in this manual for each mode of treatment available,
as well as the indications, contraindications, warnings, and precautions.
3
Product Description
The MStim Drop LGT-233 is a wearable foot drop device, which is mainly consists of stimulator
unit, MStim Drop APP, electrode lead hose, electrodes and leg bandage. It can control the timing and
duration of the stimulation by tracing the angle during walking, using FES (Functional Electrical
Stimulation) to treat and improve the patient’s foot drop and help to improve walking ability.
It has three modes: Training mode, Walk mode and Evaluation mode. Training mode is suitable for
muscle training when the patient is seated or lying down (patient lacking active training), which can
promote muscle recover, prevent muscle atrophy, improve joint range of motion, and increase local
blood flow. Walk mode is walking with the electrical stimulation. It is suitable for patients to walk to
restore the correct gait, while walking stimulation, to provide the correct mode of motion, to rebuild the
motor function of the brain to restore limb walking function. Evaluation mode is walking without the
electric stimulation. It is suitable for recording the calf, thigh bending angle when patient walks. The
data recorded can compare with walking mode.
4
Safety Instructions
Symbols
1. Symbols on the medical device
Symbols
Explanation
Manufacturer
Date of manufacture
EU Representative
This product complies with European Directive 93/42 EEC for medical products.
(0598 is the notified body number)
5
Correct Disposal of This Product (Waste Electrical & Electronic Equipment)
Statement: Contact the local authorities to determine the proper method of disposal
of potentially bio-hazardous parts and accessories.
Type BF applied part (i.e. electrode) complying with IEC60601-1.
Protected against solid foreign objects of 12.5 mm (0.5 in) diameter and greater;
Protected against vertically falling water drops when enclosure tilted up to 15°.
This device emits non-ionizing radiation.
This symbol indicates that this device is a Class II equipment according to IEC
60601-1 (when charging)
Refer to instruction manual/ booklet
Caution output. It is placed near all electrode connections.
6
2. Symbols on the package
Symbols
Explanation
This side up
The transportation package must be vertical and straight up during transportation.
Fragile, handle with care
The product inside the packaging could be easily damaged if dropped or handled
without care and attention.
Keep away from rain
The product package should keep out of the rain and not to store it in damp
conditions.
Temperature limitation
The product package should be stored at a temperature between -20 and 55
degrees (centigrade).
Upper limit of humidity
The product package should be stored at a humidity less than 93%.
Atmospheric pressure limitation
The product package should be stored at an atmospheric pressure between 86kPa
and 106kPa.
7
Precautionary Definitions
The precautionary instructions found in this section and throughout this manual are indicated by
specific symbols. Understand these symbols and their definitions before operating this equipment. The
definition of these symbols is as follows:
Text with a “CAUTION” indicator will explain possible safety infractions that could have the potential
to cause minor to moderate injury or damage to equipment.
Text with a “WARNING” indicator will explain possible safety infractions that will potentially cause
serious injury and equipment damage.
Text with a “DANGER” indicator will explain possible safety infractions that are imminently
hazardous situations that would result in death or serious injury.
8
Refer to Instruction Manual/Booklet
NOTE: Throughout this manual, “NOTE” may be found. These Notes are helpful information to aid
in the particular area or function being described.
Type BF applied part (i.e. electrode) complying with IEC60601-1.
9
Warnings and cautions
Please carefully read and understand the following warnings and cautions to ensure the safe and
correct use of the MStim Drop LGT-233 and to prevent injury.
Read, understand, and practice the precautionary operating instructions. Know the limitations and
hazards associated with using the MStim Drop LGT-233. Observe the precautionary and
operational decals placed on the unit.
Before using MStim Drop LGT-233 make sure you have read and understood all information
provided in this manual. Familiarity with the information included in this manual is an essential
requirement to ensure efficient and optimal use of the system, to avoid dangers to persons and to
the equipment, and to obtain good treatment results.
Improper installation, operation, or maintenance of the MStim Drop LGT-233 may result in
malfunctions of this unit or other devices.
In case of display failure or other obvious defects, switch the unit off immediately, and notify a
certified service technician.
Adjustments or replacement of components may result in the equipment failing to meet the
10
requirements for interference suppression.
This MStim Drop LGT-233 should be kept out of the reach of children.
Do not use this unit near the heart or chest, above the neck, on the head, around the mouth or on
diseased skin.
The placement of the electrodes can be referenced to the reference schematic provided by APP,
note that the following parts cannot be placed:
a) carotid sinus (current may affect blood pressure and cardiac contraction, causing arrhythmia);
b) infection site (which may aggravate the infection);
c) pregnant women's abdomen and lumbosacral (may cause uterine contractions);
d) surgical site (muscle contraction may cause wound dehiscence);
e) malignant neoplasms;
f) sensory defects or parts that are allergic to the electrodes;
g) eye.
Do not use this unit for purposes other than treatment indicated in this manual;
Do not use the MStim Drop LGT-233 with high frequency surgical equipments on the patient. It will
cause unstable output when the unit is close to the high frequency equipments (in the same room
and without shield).
Do not use electrodes with an active area of less than 25 cm² due to the risk of associated burning.
11
Proceed systematically with caution when the density of the current is over 2 mA /cm².
Do not modify this device without authorization of the manufacturer.
Only use this device with the charger, cables, electrodes and accessories recommended by the
manufacturer.
The MStim Drop LGT-233 contains built-in batteries that cannot be removed by the user. Do not
replace it by yourself to avoid damage the batteries or device. If necessary, please contact the
company or the company authorized maintenance personnel to replace.
Do not use this device simultaneously with other therapeutic device (such as microwave), to avoid
mis-operation.
Please dispose of the equipment and other accessories according to local regulations. Do not treat
them as household waste. Do not put the device in fire or water. If the batteries are not properly
disposed, it may cause a battery explosion.
Do not use when the unit is charging.
Always check the device and the electrodes for damage before use.
If the unit is not functioning properly or you feel discomfort, immediately stop using the unit. If you
feel any trouble with your body or skin, consult the doctor and follow his/her instructions.
12
The self-adhesive electrode limited to the same person to use, do not use in another patients to
prevent infection.
If the electrode loses viscosity, please replace the electrode in order to maintain good electrical
properties.
Do not use this unit in places with high humidity such as the bathrooms or while taking a bath or
shower.
Do not use this unit while sleeping. The main unit may develop trouble, or the pad may move to an
unexpected region and cause ill health.
Clean the device using a dry soft cloth. Do not use cleaning solvents or other chemical substances
in order to avoid any damage.
Make sure that you end the treatment by switching off the units or by setting the intensity to 0mA
before you remove the units or the electrodes. If you do not end the treatment, you may
experience an unpleasant sensation in your fingers. This sensation is not harmful, but can be
unpleasant.
Handle the unit with care. Do not drop, knock, or shake the unit. Rough handling can damage
internal circuit boards.
Do not apply stimulation while driving, operating machines or while performing any other activity
in which electrical stimulation can put you at risk of injury.
13
Always disconnect the power charger from the mains after use.
FCC
Changes or modifications not expressly approved by the party responsible for compliance could
void the user’s authority to operate the equipment.
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
-- Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment and receiver.
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-- Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
-- Consult the dealer or an experienced radio/TV technician for help.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
1) this device may not cause harmful interference, and
2) this device must accept any interference received, including interference that may cause
undesired operation.
This device complies with FCC radiation exposure limits set forth for an uncontrolled environment.
This transmitter must not be co-located or operating in conjunction with any other antenna or
transmitter.
FCC ID: 2ANHPLGT-233
15
EMC Guidance
This product needs special precautions regarding EMC and needs to be installed and put into
service according to the EMC information provided, and this unit can be affected by portable and
mobile RF communications equipment.
Do not use a mobile phone or other devices that emit electromagnetic fields, near the unit. This
may result in incorrect operation of the unit.
This unit has been thoroughly tested and inspected to assure proper performance and operation!
This machine should not be used adjacent to or stacked with other equipment and that if adjacent
or stacked use is necessary, this machine should be observed to verify normal operation in the
configuration in which it will be used.
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Accessory Information:
Item
Cable Length
Power cord (adapter)
0.1 m
Electrode lead hose
0.3 m
Bluetooth Specifications:
Bluetooth Version: 4.0
Frequency Range: 2.4GHz ~ 2.4835GHz
Modulation Type: GFSK
Effective Radiated Power: +4 dBm
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Guidance and manufacture’s declaration – electromagnetic emission
The LGT-233 is intended for use in the electromagnetic environment specified below. The
customer of the user of the LGT-233 should assure that it is used in such an environment.
Emission test
Compliance
Electromagnetic environment – guidance
RF emissions
CISPR 11
Group 1
The LGT-233 use RF energy only for its internal
function. Therefore, its RF emissions are very low
and are not likely to cause any interference in nearby
electronic equipment.
RF emission
CISPR 11
Class B
The LGT-233 is suitable for use in all establishments,
including domestic establishments and those directly
connected to the public low-voltage pump supply
network that supplies buildings used for domestic
purposes.
Harmonic emissions
IEC 61000-3-2
Class A
Voltage fluctuations/ flicker
emissions
IEC 61000-3-3
Complies
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Guidance and manufacture’s declaration – electromagnetic immunity
The LGT-233 is intended for use in the electromagnetic environment specified below. The
customer or the user of LGT-233 should assure that it is used in such an environment.
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 floor are covered
with synthetic material, the relative
humidity should be at least 30%.
Electrical fast
transient/ burst
IEC 61000-4-4
±2 kV for power
supply lines
±1 kV for
input/output lines
±2kV for power
supply lines
Mains power quality should be that
of a typical commercial or hospital
environment.
Surge
IEC 61000-4-5
± 1 kV line(s) to
line(s)
± 2 kV line(s) to
earth
±1 kV differential
mode
Mains power quality should be that
of a typical commercial or hospital
environment.
Voltage dips,
short
interruptions
and voltage
<5% UT(>95% dip in
UT) for 0.5 cycle
40% UT(60% dip in
UT) for 5 cycles
<5% UT(>95% dip in
UT) for 0.5 cycle
40% UT(60% dip in
UT) for 5 cycles
Mains power quality should be that
of a typical commercial or hospital
environment. If the user of the
LGT-233 requires continued
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variations on
power supply
input lines
IEC 61000-4-11
70% UT(30% dip in
UT) for 25 cycles
<5% UT(>95% dip in
UT) for 5 sec
70% UT(30% dip in
UT) for 25 cycles
<5% UT(>95% dip in
UT) for 5 sec
operation during power mains
interruptions, it is recommended
that the LGT-233 be powered from
an uninterruptible power supply or
a battery.
Power
frequency
(50Hz/60Hz)
magnetic field
IEC 61000-4-8
3 A/m
3 A/m
Power frequency magnetic fields
should be at levels characteristic
of a typical location in a typical
commercial or hospital
environment.
NOTE UTis the a.c. mains voltage prior to application of the test level.
20
Guidance and manufacture’s declaration – electromagnetic immunity
The LGT-233 is intended for use in the electromagnetic environment specified below. The
customer or the user of the LGT-233 should assure that it is used in such an environment.
Immunity
test
IEC 60601
test level
Compliance
level
Electromagnetic environment - guidance
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
3 Vrms
150 kHz to
80 MHz
3 V/m
80 MHz to
2.5 GHz
3 Vrms
3 V/m
Portable and mobile RF communications equipment
should be used no closer to any part of the LGT-233,
including cables, than the recommended separation
distance calculated from the equation applicable to
the frequency of the transmitter.
Recommended separation distance
d = 1.2 √P
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
21
manufacturer and d is the recommended separation
distance in metres (m).
Field strengths from fixed 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 of equipment
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 reflection from structures, objects and people.
a Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless)
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 fixed RF transmitters, an electromagnetic site survey should be considered. If the measured
field strength in the location in which the LGT-233 is used exceeds the applicable RF compliance
level above, the LGT-233 should be observed to verify normal operation. If abnormal
performance is observed, additional measures may be necessary, such as re-orienting or
relocating the LGT-233.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
22
Recommended separation distances between portable and mobile RF communications
equipment and the LGT-233
The LGT-233 is intended for use in an electromagnetic environment in which radiated RF
disturbances are controlled. The customer or the user of the LGT-233 can help prevent electromagnetic
interference by maintaining a minimum distance between portable and mobile RF communications
equipment (transmitters) and the LGT-233 as recommended below, according to the maximum output
power of the communications equipment.
Rated maximum
output power of
transmitter (W)
Separation 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
0.12
0.12
0.23
0.1
0.38
0.38
0.73
1
1.2
1.2
2.3
10
3.8
3.8
7.3
100
12
12
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 80MHz and 800MHz, 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 reflection from structures, objects and people.
23
Clinical Instructions
Before a treatment with the MStim Drop LGT-233, a correct examination and diagnosis should be
performed.
Indications
The MStim Drop LGT-233 can alleviate acute and chronic pain, also can stimulate nerves and
muscles, causing muscle contraction.
Contraindications
Patients with the following disease are forbidden to use the MStim Drop LGT-233:
1) Patient with severe heart failure or arrhythmia, and patient with pacemaker;
2) Patient with venous thrombosis or thrombophlebitis;
3) Patient who is in the acute or critical stage of important organ disease;
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4) Patient whose treatment area with bleeding tendency,metal matter or tuberculous lesions;
5) Patients who cannot provide sensory feedback for stimulation (unable to express or have
difficulty in communication), such as mental disease.
Adverse Effects
You should stop using the device and consult your doctor if you experience adverse reactions
from the device. Possible adverse reactions may include the following:
skin irritation beneath the electrodes;
burns beneath the electrodes;
headaches or other painful sensations.
25
Working Principle
26
Inspection of the Goods
1. Unpacking the Unit
The unit is generally delivered with the packaging material supplied by the manufacturer. Proceed
as follows:
Position the transport packaging so that the arrows are pointing upward.
Remove the transport packaging upward.
Remove the remaining foam material.
2. Inspections
Immediately upon unpacking the unit, perform the following steps:
1) Verify the delivery documents to make sure that the delivery is complete.
2) Check the external components and accessories for possible damage due to transport.
3) Verify that the packaging contains the following:
27
No.
Item Name
Amounts
Unit
1
LGT-233 main unit
1
piece
2
Power adapter
1
piece
3
Electrode lead hose
2
pieces
4
Self-adhesive electrode with magnetic connection:
50mm×50mm (square)
4
pieces
5
Leg bandage
1
piece
6
Certificate of quality
1
piece
7
Warranty card
1
piece
8
Installation checklist
1
piece
9
User manual
1
piece
Other parts of MStim Drop LGT-233 are available as accessory on demand. Visit website
www.longest.cn to obtain more information.
28
Overview of the Unit
1. Nomenclature
29
1
Increasing intensity button
4
ON/ OFF button
2
Decreasing intensity button
5
Output socket: connect electrode lead hose
3
Indicator light: see table:
meaning of indicator light
6
Micro-USB port: connect power adapter. Slide the
slider to output sockets when charging.
Table: meaning of indicator light
Status
Indicator color
Way of flashing
Power off
None
None
Bluetooth is
connecting
Green
Flash at 3Hz frequency. Flash at 1Hz after
successful connection
Ready
Green
Flash at 1Hz frequency
Stimulation on
(may be ＞10mA
(r.m.s) or 10V (r.m.s))
Yellow*-1
Slight light
Low battery cannot be
used
White
Flash at 3Hz frequency for 1s, and then turn off
the unit.
Charging
Blue
Flash at 1Hz frequency
Fully charged
Blue
Always bright
Electrodes fall off
during treatment
White
Flash at 1Hz frequency
NOTE: The device can deliver an output of more than 10mA (r.m.s) or 10V (r.m.s) and the output
intensity is set more than 10 mA.
30
2. Accessories
2.1 Electrode lead hose
The electrode lead hose connects with the main unit and electrodes.
3.2 Self-adhesive electrode with magnetic connection
31
No.
Item name
Remark
1
Self-adhesive electrode with magnetic connection:
50mm×50mm (square)
Standard
2
Self-adhesive electrode with magnetic connection: Φ32mm
(round)
Optional
3
Self-adhesive electrode with magnetic connection: Φ50mm
(round)
Optional
4
Self-adhesive electrode with magnetic connection:
40mm×60mm (rectangle)
Optional
32
5
Self-adhesive electrode with magnetic connection:
50mm×90mm (rectangle)
Optional
6
Self-adhesive electrode with magnetic connection:
80mm×130mm (rectangle)
Optional
2.2 Leg Bandage
33
MStim Drop Application
MStim Drop LGT-233 can only be used with the software provided by our company.
Name of the software: MStim Drop
Release Version: 1
Software operating environment:
Android 4.3 or later mobile phone, with 4.0 Bluetooth.
iOS 8.0 or later iPhone mobile phone, with 4.0 Bluetooth.
34
1. Install MStim Drop Application
Click the MStim Drop Application installation package
(APK file) on your phone, and follow the prompts to install the
application.
2. Open MStim Drop Application
After the MStim Drop Application is installed properly, it
will appear on your phone desktop. Click the icon and
the main interface of the MStim Drop appear, as shown on
the left.
35
3. Connect the Device
Click “click here to connect the device” at the main interface to connect MStim Drop Application
which on the phone and the device via Bluetooth. The APP will search the devices automatically, as
shown on the below. When it has searched, the interface will display the device which has found. Click
“Not binding” to connect the device till becomes “Connected” which means the device had connected.
The Bluetooth address of the unit is below the product model. You can paste this Bluetooth address on
the unit to distinguish other unit. Click to view the device information, such as battery percentage,
hardware and software version of device.
36
37
4. Main Interface
Open MStim Drop, you can see the main interface, as
shown on the left.
The software has the power display function; the main
interface of the upper right corner shows the power of the
main unit.
There are three modes on the MStim Drop: Train Mode,
Walk Mode and Evaluation Mode.
38
4.1 Train Mode Interface
1) Enter Train Mode interface
Click Train Mode at the main interface to enter the this
interface, as shown on the left.
The current regulation module displays the units which
had connected. The gray circle indicates that the device did
not be connected. Once it connects, it will become cyan.
39
2) Set the parameters
Table: Parameter setting of Train Mode
Parameter Setting
Range
Default
Stepping
Frequency Hz
1-120
40
1
Pulse Duration μs
50-500
300
10
Surge Modulation*-1
Ramp up time s
0.5-5.0
1.0
0.5
Hold time s
1.0-30.0
3.0
1.0
Ramp down time s
0.5-5.0
1.0
0.5
Interval time s
2.0-60.0
10.0
1.0
Treatment time min
1-60
10
1
Output Intensiyt mA*-2
0-100
0
1
*-1 The Surge Modulation Interface is as shown on the left.
*-2 The output intensity can only be adjusted after starting.
40
3) Start treatment
When the parameters are set, click the start button to
start the treatment. Meanwhile the circles turn blue.
4) Adjust output intensity
Click the start button, the output intensity can be
adjusted. Click button, interface pop-up tip:
41
5) Tips of change mode
During the treatment, if you click on other mode, the
interface will automatically go to the current treatment
interface, and appear as shown on the left. At this time, if you
want to change the mode, long press the stop button to stop
the current treatment.
6) End of the treatment
At the end of the treatment, the unit stops output and
returns to the pre start state. The indicator is switched from
yellow to green and flashes at 1Hz frequency, while the
mobile application interface shows "the treatment is finish."
42
4.2 Walk Mode Interface
1) Enter Walk Mode interface
Click Walk Mode at the main interface to enter this
interface, as shown on the left.
The current regulation module displays the units which
had connected. The gray circle indicates that the device did
not be connected. Once it connects, it will become green.
2) Placement guidance
Click at this interface, then will pop-up prompt box.
You can place the electrodes according this guidance.
3) Select Right or Left Leg
Select the left or right leg according to the actual
situation and it will affect the measurement of the angle.
43
4) Set the parameters
Table: the parameter setting of Walk Mode
Parameter Setting
Range
Default
Stepping
Frequency Hz
1-120
50
1
Pulse duration μs
50-500
300
10
Output intensity μA*-1
0-1000
0
10
*-1 The output intensity can only be adjusted after starting.
5) Treatment of debugging
After setting the output frequency and pulse duration,
click debugging. Adjust the output current and frequency
according to your muscle contraction.
44
6) Calibrate the sensor
After debugging, click Next step to jump to the interface
of Sensor calibration.
At this stage, there is no electrical stimulation output.
Stand upright according to the figure on the APP and click on
"Calibrate" to calibrate the sensor.
45
7) Enter treatment interface of Walking Mode
After the calibration is completed, it will automatically
enter the walking mode treatment interface.
In this page, the leg flexion and extension angle and the
thigh abduction angle can be recorded in real time; the
number of walking steps, walking distance and walking time
can be recorded.
8) Start treatment
Click the start button to start the treatment. The output
current is the value of the previous debug, also you can
adjusted according to the actual situation.
9) End of the treatment
At the end of the treatment, the unit stops output and
returns to the pre start state. The indicator is switched from
yellow to green and flashes at 1Hz frequency, while the
mobile application interface shows "the treatment is finish."
46
4.3 Evaluation Mode Interface
1) Enter Evaluation Mode interface
Click Evaluation Mode at the main interface to enter this
interface, as shown on the left.
You can place the electrodes to the figure on the APP.
Select the left or right leg according to the actual
situation and it will affect the measurement of the angle.
Then click “Next step”.
2) Calibrate the sensor
Stand upright according to the figure on the APP and
click on "Calibrate" to calibrate the sensor.
47
3) Enter treatment interface of Evaluation Mode
After the calibration is completed, it will automatically
enter the Evaluation Mode treatment interface. In this page,
the leg flexion and extension angle and the thigh abduction
angle can be recorded in real time; the number of walking
steps, walking distance and walking time can be recorded.
48
4) Start treatment
Click the start button to start the treatment.
5) End of the treatment
At the end of the treatment, the unit returns to the pre
start state. The indicator is switched from yellow to green and
flashes at 1Hz frequency.
49
5. Open circuit tip
In the train mode and walking mode, when the output is
disconnected, the indicator on the unit is displayed in white
and flashing at 1 Hz, the treatment time stops counting down.
In this case, check the connection of the electrodes and
press the "Start" button to restart the treatment.
50
6. About My favors
1) Add user-defined protocol
MStim Drop can save user-defined protocols in train
mode. Click Train Mode at the main interface to enter the
interface, set the frequency, pulse duration, treatment time
and surge modulation parameters, click “Favorites” in the
upper right corner, then pop up the page as shown on the left,
set the name of the user-defined protocol and click OK button,
the collection is successful.
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2) Enter treatment from a user-defined protocol
Click the icon which in the upper right corner of
the main interface, or swipe the interface in the main
interface to view more. Click the icon to enter the
user-defined protocol. Choose one user-defined protocol you
want and click to enter the detail page which shows the
treatment parameters of the user-defined protocol. Click
“Enter Treatment” to enter the treatment. For details, please
refer to clause 4.1 Train Mode Interface of this chapter.
3) Delete user-defined protocol
In the user-defined protocol interface, swipe the
user-defined protocol to the left and click "Delete".
52
7. Help Center
Click the icon in the upper right corner of the
main interface, or slide the interface in the main interface to
see more, click the icon , enter the help center
interface.
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7.1 Using guidance
There is some introduction of how to operation the
MStim Drop LGT-233 in using guidance, which is convenient
for you to understand the use of device.
54
7.2 Common problem
MStim Drop Application includes a variety of common
problems, you can learn more about the MStim Drop
LGT-233 and treatment.
55
Operation Guidance
1. Preparing for use
1.1 Charging the unit
To be able to use the device, you first have to charge the unit. Put one side of power adapter
connects with the unit; another side connects with the power socket. The status indicator on the unit
flashes blue during charging. The status indicator stops flashing when the battery is fully charged.
NOTE: If the rechargeable battery of the units is not fully charged when you start a treatment, the
batteries may run out during the treatment. We advise you to always fully charge the unit
before you start a treatment.
NOTE: Always disconnect the power charger from the mains after use.
Do not use when the unit is charging.
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1.2 Turn on the unit
Press the ON/OFF button to turn on the unit to standby.
1.3 Open the MStim Drop and Connecting
Turn on the MStim Drop Application on your phone and connect the unit to your phone via Bluetooth.
Two main units can be connected at the same time, and two units can perform electrical stimulation
simultaneously.
2. Starting a Treatment
Train Mode
1) Clean the skin and pace the electrodes: Use alcohol or soapy water to clean the skin, remove
the grease of skin. After skin drying, place electrodes according the schematic of MStim Drop
APP.
2) Connect the unit: Connect one end of electrode lead hose to the electrodes, the other end to
the unit.
3) Select Train Mode and set parameters: Click Train Mode at the main interface to enter the
Train Mode interface, set parameters such as frequency, pulse duration and treatment time
according to the actual situation (see the 4.4.1 clause in fourth chapter MStim Drop
57
Application).
4) Start Treatment: Click the start button and the treatment begins.
5) Adjust output intensity: You can adjust the output intensity in the MStim Drop interface, or
through “+/-" button on the unit. The output intensity should be increased slowly from small
values to avoid excessive stimulation. Since your body initially adapts to the intensity of the
stimulation, you may have to adjust the intensity level after some time to ensure optimal
stimulation.
Walk Mode
1) Clean the skin and pace the electrodes: Use alcohol or soapy water to clean the skin, remove
the grease of skin. After skin drying, place electrodes according the schematic of MStim Drop
APP.
2) Connect the unit: Connect one end of electrode lead hose to the electrodes, the other end to
the unit.
3) Select Walk Mode and debug: Click Walk Mode at the main interface to enter the interface,
click treatment of debugging, and adjust output intensity.
4) Fix Leg Bandage: After finish debug, fix the strap on the calf according to the schematic of
MStim Drop APP, and place the unit into the pocket of Leg Bandage.
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5) Calibrate the sensor: click “next step” at MStim Drop APP, Stand according to the schematic of
APP, click “Adjust”.
6) Start treatment: After calibration is completed, it is automatically transferred to the treatment
interface. Click start button, then you can start your walking training.
7) Adjust output intensity: You can adjust the output intensity in the MStim Drop interface, or
through “+/-" button on the unit. The output intensity should be increased slowly from small
values to avoid excessive stimulation. Since your body initially adapts to the intensity of the
stimulation, you may have to adjust the intensity level after some time to ensure optimal
stimulation.
Evaluation Mode
1) Fix Leg Bandage: After finish debug, fix the strap on the calf according to the schematic of
MStim Drop APP, and place the unit into the pocket of Leg Bandage.
2) Select Evaluation Mode and calibrate: Click Evaluation Mode at the main interface to enter the
interface, Stand according to the schematic of APP, then click “next step” to enter the Sensor
calibration interface, click “Adjust”.
3) Start Training: After calibration is completed, it is automatically transferred to the treatment
interface. You can press the start button to start evaluation.
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3. The End of Treatment
At the end of the treatment, the unit stops output and returns to the pre start state. The indicator is
switched from yellow to green and flashes at 1Hz frequency, while the mobile application interface shows
“the treatment is finish.”
Remove the leg bandage and electrode lead hose after treatment. The main unit, electrode lead
hose and the leg bandage are put into the box, placed in a cool and ventilated place, ready for the next
use.
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Care and Maintenance
1. Cleaning
1) Please turn off the device before the cleaning and disinfection operation;
2) For the main unit cleaning, what recommended are a clean, soft damp cloth for stains, and a clean,
soft dry cloth for dust in the surface of the main unit;
3) Clean the Leg Bandage: Wipe the surface with a damp cloth or antiseptic wipe after use. It can be
washed if necessary: moderate amount of neutral detergent, soak for a short time, be careful,
gently rinse and dry naturally. Not machine washable, rubbed and bleached.
Do not clean the main unit with organic solvent such as gasoline or diluents, otherwise
damage will be happened to the main unit such as deformation and falling off of the paint.
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2. Routine Maintenance
If it is used in accordance with the instructions of the user manual, the device does not need a
particular regular maintenance.
Manufacturer will provide circuit diagrams, component part lists, descriptions, calibration
instructions to assist to service personnel in parts repair.
The unit and accessories must be checked at regular intervals.
1) Check the power line to ensure if there is no distortion, fracture, etc. These circumstances may
cause fire hazard. Please replace a new power line immediately.
2) Replace the electrodes if:
-- they are damaged or torn.
-- they are past the use-by date.
-- they have lost their adhesive power. Never use plaster or tape to attach them to your skin.
-- stimulation feels less strong.
-- when the stimulation is uncomfortable, i.e. when you experience an unpleasant stinging or biting
sensation.
NOTE: Always replace the electrodes with electrodes recommended for this device by the
manufacturer.
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Never perform unauthorized service work. All service work must be performed only by
service technicians who have been authorized by the manufacturer.
3. Disposal
For environmental reasons, do not dispose of the device in the household waste at the end of its
useful life. Dispose of the unit at a suitable local collection or recycling point. Dispose of the device in
accordance with EC Directive – WEEE (Waste Electrical and Electronic Equipment). If you have any
questions, please contact the local authorities responsible for waste disposal.
This symbol indicates that batteries contain substances that may be harmful to human health and
63
the environment. Never dispose of batteries with normal household waste. Follow the local rules for
separate collection of batteries. Correct disposal of batteries helps prevent potentially negative
consequences for the environment and human health. The MStim Drop LGT-233 contains a built-in
rechargeable battery that cannot be removed by the user. Take them to an official collection point or a
service centre to have the rechargeable battery removed.
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Troubleshooting
This chapter summarizes the most common problems you could encounter with the MStim Drop
LGT-233. If you are unable to solve the problem with the information below, please call the distributors.
Troubles
Possible causes
Solutions
1. The indicator does not
light up at all when press
the ON/OFF button
The battery of the unit is empty.
Charge the unit (see chapter
Preparing for use’).
2. The MStim Drop APP
on the mobile phone
could not connect with the
unit.
1. The unit is not turn on;
2. Mobile phone Bluetooth is not
open or mobile phone Bluetooth
problems
3. the distance of the mobile
phone and the unit is too far;
4. The unit has contacted another
mobile.
5. The unit is asleep and Bluetooth
is stopped;
6. Other reasons.
1. Turn on the unit;
2. Please turn on the Bluetooth on
the mobile phone or change
another mobile phone;
3. Please keep the mobile phone
near the unit;
4. Disconnect the connected
phone or restart the unit;
5. Restart the unit;
6. Turn off the APP background
operation, restart the phone
Bluetooth.
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Troubles
Possible causes
Solutions
3. The status indicator on
the unit flashed white and
the unit switched off.
The battery of the unit is empty.
Charge the unit (see chapter
Preparing for use’).
4. There is not output.
1. Did not press the start button;
2. Did not adjust the output
intensity;
3. The electrode lead hose
connected badly;
4. The electrode lead hose has
been damaged.
1. Press the start button;
2. Adjust the output intensity;
3. Re-connect the electrode lead
hose;
4. Replace a new electrode lead
hose.
5. Stimulation is
uncomfortable.
1. The output intensity is too high;
2. Electrodes are too close
together;
3. Damaged or worn electrodes or
electrode lead hoses;
4. Electrode active area size is too
small.
1. Decrease the output intensity;
2. Reposition the electrodes;
3. Replace;
4. Replace electrodes with ones
that have an active area no less
than 25.0cm2.
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Troubles
Possible causes
Solutions
6. The MStim Drop APP
on the mobile phone pop
up tips “electrodes fall
off”, the indictor of the unit
flashed white.
1. The electrode lead hose
connected badly;
2. The electrodes are poor contact
with the skin;
3. Electrodes do not stick well.
1. Re-connect the electrode lead
hose;
2. Re-connect the electrodes;
3. Replace electrodes. Apply
electrodes to a clean, dry surface.
7. The unit has output, but
treatment without
sensation.
The output intensity is too low.
Increase the output intensity.
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Technical Specifications
1. Stimulator Output Parameters
Channel:
One channel
Output Mode:
Synchronize output, Alternate output mode
Output Waveform:
Symmetrical biphasic asynchronous
Pulse Duration:
Adjustable, 50μs-500μs, stepping 10μs
Pulse Frequency:
Adjustable, 1Hz-120Hz, stepping 1Hz
Surge Modulation:
Parameter
Range
Stepping
Ramp up time (s)
0.5-5.0
0.5
Hold time (s)
1.0-30.0
1.0
Ramp down time (s)
0.5-5.0
0.5
Interval time (s)
2.0-60.0
1.0
Output Intensity:
Adjustable, 0mA-100mA(p-p), stepping 1mA (at 500Ω load)
Maximum Current
(r.m.s):
the maximum current will be limited to 50mA r.m.s.at 500 Ω Load
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Timer:
a) Treatment time: 1min-60min, stepping 1min;
b) Timer tolerance: ±2%;
c) When finish, the device can stop output and prompt.
2. Other specifications
Product Name
Portable electro-stimulation therapy device
Model
LGT-233
Software Release
Stimulator (main unit): A
MStim Drop application: 1 (Android&iOS)
Power Supply:
Adapter model:
HYI11-005 (USA)
HYI11-005 (Europe)
Adapter supply voltage:
AC100-240V, 50/60Hz
Adapter output:
DC 5V, 2A.
Battery: 3.7V, 1200mAh, lithium battery.
Line Current Isolation: Patient disconnected when charging.
Expected Life
The expected life of the main unit is five years under normal usage.
(Except for man-made damage). The Date of product manufacture see
label on the device.
The expected life of the electrode lead hose and leg bandage are 12
months under normal usage. (Except for man-made damage).
The electrodes may be used up to 20 times. These numbers vary
depending on the skin and /or climate conditions as well as care of
usage and storage.
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Rate Power:
6VA
Dimension:
59mm (W) × 59mm (L) × 22mm (H)
Weight:
60g (only main unit)
Classification:
Classification (IEC 60601-1): Class II, Type BF Applied Part;
Ingress Protection: IP22;
Mode of Operation: Continuous.
Environmental
conditions of
operation:
Temperature: 5 to 40°C;
Rel. humidity: ≤80%;
Atmosphere Pressure: 86.0 to 106.0kPa.
Environmental
conditions of transport
and storage:
Temperature: -20 to 55°C;
Rel. humidity: ≤93%;
Atmosphere Pressure: 86.0 to 106.0kPa.
Environmental
conditions of transport
and storage between
uses:
Temperature: -25 to 70°C;
Rel. humidity: ≤90%;
Atmosphere Pressure: 86.0 to 106.0kPa.
NOTE: Except for Self-adhesive electrodes.
Works with:
Requires a smart phone with Bluetooth 4.0, Android 4.3 (or later) or iOS 8.0
or later.
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Assistance
Every intervention on device must be performed by manufacturer. For any assistance intervention
and original spare parts please contact the manufacturer at following address:
GUANGZHOU LONGEST SCIENCE & TECHNOLOGY CO., LTD.
Add: 5&6F, Building B4, No.11, Kaiyuan Avenue, Science City, Guangzhou Hi-tech Industrial
Development Zone, 510530 Guangzhou, Guangdong Province, P.R. China
Tel: +86 20 6635 3999 Fax: +86 20 6635 3920
Email: service@longest.cn Website: www.longest.cn
EU Representatives Information
Lotus Global Co., Ltd
Company address: 1 Four Seasons Terrace West Drayton, Middlesex London, UB7 9GG, United
Kingdom
Tel: +44 20 75868010, 70961611 Fax: +44 20 79006187
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Warranty
The Manufacturer warrants that the MStim Drop LGT-233 is free of defects in material and
workmanship for the main unit. This warranty shall remain in effect for one year (12 months) from the
date of original consumer purchase. If this Product fails to function during the one year warranty period
due to a defect in material or workmanship, at the Manufacturer's Option, Manufacturer or the authorized
dealer will repair this Product without charge.
The users should fill out the Warranty Card as soon as the product is installed and send a copy to
service@longest.cn to have the warranty be valid. Damages due to non-adherence to the User Manual
or wear of parts are excluded from warranty.
This Warranty Does Not Cover:
Replacement parts or labor furnished by anyone other than the Manufacturer, the authorized dealer
or a certified Company service technician.
Defects or damage caused by labor furnished by someone other than Manufacturer, the authorized
dealer or a certified Company service technician.
Any malfunction or failure in the Product caused by product misuse, including, but not limited to, the
failure to provide reasonable and necessary maintenance or any use that is inconsistent with the
User Manual.

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