Longest Science & Technology LGT-231 User Manual
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Longest Science & Technology LGT-231 User Manual

Portable electro-stimulation therapy device
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Portable Electro-Stimulation
Therapy Device
USER MANUAL
LGT-231
Guangzhou Longest Science & Technology Co., Ltd.

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Summary of Contents for Longest Science & Technology LGT-231

  • Page 1 Portable Electro-Stimulation Therapy Device USER MANUAL LGT-231 Guangzhou Longest Science & Technology Co., Ltd.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS Foreword ............................4 Safety Instructions ..........................6 EMC Guidance..........................17 Clinical Instructions .......................... 25 Working Principle ..........................27 Inspection of the Goods ........................28 Overview of the Unit ........................30 MStim Reha Application ........................35 Operation Guidance ......................... 57 Care and Maintenance ........................

  • Page 3: Foreword

    Thank you for purchasing the LGT-231 Portable Electro-Stimulation Therapy Device from our company. This manual has been written for the owners and operators of the LGT-231 Portable Electro-Stimulation Therapy Device. It contains general information on the instructions for safety, intended use, working principle, operation, maintenance, troubleshooting, and warranty. In...
  • Page 4 Product Description The LGT-231 Portable Electro-Stimulation Therapy Device is a lightweight and portable multifunctional electrotherapy device that provides two channels of TENS, NMES current, or one channel of MCR current. It utilizes the low electric-current to stimulate muscle nerve to stimulate nerve and muscle tissue, relieve pain and promote blood circulation, help improve symptoms, relieve pain, restore and strengthen neuromuscular function.

  • Page 5: Safety Instructions

    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) 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.
  • Page 6 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 ° This device emits non-ionizing radiation. Refer to instruction manual/ booklet Caution output.
  • Page 7 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.
  • Page 8 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.
  • Page 9 hazardous situations that would result in death or serious injury. Explosion Hazard Text with an “Explosion Hazard” indicator will explain possible safety infractions if this equipment is used in the presence of flammable anesthetics. Dangerous Voltage Text with a ”Dangerous Voltage” indicator serves to inform the user of possible hazards resulting in the electrical charge delivered to the patient or operator in certain treatment configurations.
  • Page 10  Before using LGT-231 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.
  • Page 11 Do not use this unit for purposes other than treatment indicated in this manual.  Do not use the LGT-231 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).
  • Page 12  The LGT-231 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.
  • Page 13 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.
  • Page 14 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.
  • Page 15 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. FCC RF warning statement: The device has been evaluated to meet general RF exposure requirement.

  • Page 16: Emc Guidance

    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.
  • Page 17 Accessory Information: Item Cable Length Manufacturer & Address Shenzhen Hongyi Electronic Technology Co., Ltd. Power cord (adapter) 0.96 m A05-1, 2/F, 3 Bldg, EC building, Yu Anju, Baoan District, Shenzhen, China Guangzhou Longest Science & Technology Co., Ltd. 5&6F, Building B4, No.11, Kaiyuan Avenue, Science City, Guangzhou Hi-tech Electrode lead hose 1.2 m Industrial Development Zone, 510530 Guangzhou, Guangdong Province,...
  • Page 18 Guidance and manufacture’s declaration – electromagnetic emission The LGT-231 is intended for use in the electromagnetic environment specified below. The customer of the user of the LGT-231 should assure that it is used in such an environment. Electromagnetic environment – guidance...
  • Page 19 Guidance and manufacture’s declaration – electromagnetic immunity The LGT-231 is intended for use in the electromagnetic environment specified below. The customer or the user of LGT-231 should assure that it is used in such an environment. IEC 60601 test Electromagnetic environment...
  • Page 20 70% U (30% dip in 70% U (30% dip in input lines recommended that the LGT-231 ) for 25 cycles ) for 25 cycles powered from <5% U (>95% <5% U (>95% dip...
  • Page 21 Guidance and manufacture’s declaration – electromagnetic immunity The LGT-231 is intended for use in the electromagnetic environment specified below. The customer or the user of the LGT-231 should assure that it is used in such an environment. Immunity IEC 60601...
  • Page 22 RF transmitters, an electromagnetic site survey should be considered. If the measured field strength in the location in which the LGT-231 is used exceeds the applicable RF compliance level above, the LGT-231 should be observed to verify normal operation.
  • Page 23 Recommended separation distances between portable and mobile RF communications equipment and the LGT-231 The LGT-231 is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or the user of the LGT-231 can help prevent...

  • Page 24: Clinical Instructions

    The LGT-231 Portable Electro-Stimulation Therapy Device 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 LGT-231 Portable Electro-Stimulation Therapy Device: Patient with severe heart failure or arrhythmia, and patient with pacemaker;...
  • Page 25 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.

  • Page 26: Working Principle

    Working Principle Display Screen Communication of Mobile Phone APP and Bluetooth PWM Intensity Adjustment Bluetooth Chip Pulse Processor Electrode Generating Power AC Input Battery Current Adapter Feedback Button...

  • Page 27: Inspection Of The Goods

    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. ...
  • Page 28 Electrode lead hose pieces Self-adhesive electrode with magnetic connection: pieces 50mm×50mm (square) Certificate of quality piece Warranty card piece Installation checklist piece User manual piece Other parts of LGT-231 are available as accessory on demand. Visit website www.longest.cn to obtain more information.

  • Page 29: Overview Of The Unit

    Overview of the Unit 1. Nomenclature...
  • Page 30 Indicator light: table: Increasing intensity of CH2 meaning of indicator light Increasing intensity of CH1 Display screen: Displays various setting parameters and treatment parameters Decreasing intensity of CH1 Output sockets of CH1: connect electrode lead hose ON/ OFF button Output sockets of CH2: connect electrode lead hose Decreasing intensity of CH2 Micro-USB port: connect power adapter.
  • Page 31 2. Display screen of the unit Bluetooth icon: Pulse Frequency When the unit does not connect the Battery status display APP about 3 minutes later, the icon will Output intensity of CH2: When the disappear, means that the unit has turn channel is not selected, the will display”-- off Bluetooth.
  • Page 32 3. Accessories 3.1 Electrode lead hose The electrode lead hose connect with the main unit and electrodes. 3.2 Self-adhesive electrode with magnetic connection...
  • Page 33 Item name Remark Self-adhesive electrode with magnetic connection: Standard 50mm×50mm (square) Self-adhesive electrode with magnetic connection: Optional Φ32mm (round) Self-adhesive electrode with magnetic connection: Optional Φ50mm (round) Self-adhesive electrode with magnetic connection: Optional 40mm×60mm (rectangle) Self-adhesive electrode with magnetic connection: Optional 50mm×90mm (rectangle) Self-adhesive electrode with magnetic connection:...

  • Page 34: Mstim Reha Application

    MStim Reha Application LGT-231 Portable Electro-Stimulation Therapy Device can only be used with the software provided by our company.  Name of the software: MStim Reha  Release Version: 1  Software operating environment: Android 4.3 or later mobile phone, with 4.0 Bluetooth.
  • Page 35 1. Install MStim Reha Application Click the MStim Reha Application installation package (APK file) on your phone, and follow the prompts to install the application. 2. Open MStim Reha Application After the MStim Reha Application is installed properly, it will appear on your phone desktop.
  • Page 36 3. Connect the Device Click “connect the device” to connect MStim Reha Application which on the phone and the device via Bluetooth.
  • Page 37 4. Main Interface Open MStim Reha, you can see the main interface, as shown on the left. There are three modes on the MStim Reha: TENS Mode, NMES Mode and MCR Mode.
  • Page 38 4.1 TENS Interface Enter TENS interface Click TENS at the main interface to enter the TENS interface, as shown on the left. Select output channel Select single or dual channel outputs as needed. Choose output mode TENS has four output modes: Normal, Sweep, Random and Alternation mode.
  • Page 39 Table: TENS parameter setting Output Mode: Normal Output Mode: Sweep parameter setting Range Default Stepping parameter setting Range Default Stepping Frequency Hz 1-100 Frequency Hz 1-100 Pulse Duration μs Pulse Duration μs 50-50 50-500 Burst Frequency Hz Sweep time s 15-60 Treatment time min 1-60...
  • Page 40 Start treatment When the parameter is set, click the start button to start the treatment. Adjust output intensity Click the start button, the output intensity can be adjusted. Click button, interface pop-up tip:...
  • Page 41 locking interface The APP locks automatically after some time of inactivity to prevent accidental operation. Just press the avatar swipe screen to unlock. 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 blue to green and flashes at 1Hz frequency, while the mobile application interface shows "the treatment is finish."...
  • Page 42 4.2 NMES Interface Enter NMES Interface Click NMES at the main interface to enter the NMES interface, as shown on the left. Select output channel Select single or dual channel outputs as needed. Choose output mode NMES has two output modes: Synchronize output and Alternate output mode.
  • Page 43 NMES parameter setting Table: NMES parameter setting parameter setting Range Default Stepping Frequency Hz 1-120 Pulse Duration μs 50-500 Surge Modulation*-1 Ramp up time s 0.5-5.0 Hold time s 1.0-30.0 Ramp down time s 0.5-5.0 Interval time s 5-60 10.0 Treatment time min 1-60 Output Intensiyt mA*-2...
  • Page 44 Start treatment When the parameter is set, click the start button to start the treatment. Adjust output intensity Click the start button, the output intensity can be adjusted. Click button, interface pop-up tip:...
  • Page 45 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 blue to green and flashes at 1Hz frequency, while the mobile application interface shows "the treatment is finish."...
  • Page 46 4.3 MCR Interface Click MCR at the main interface to enter the MCR interface, as shown on the left. Table: MCR parameter setting parameter setting Range Default Stepping Frequency Hz 1-100 Treatment time min 1-60 Output intensity μA 0-1000 NOTE: The output intensity can only be adjusted after starting.
  • Page 47 5. Open circuit tip When the treatment electrode is disconnected, the device appears with the following prompt, please re-paste the electrode.
  • Page 48 6. Help 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 interface.
  • Page 49 6.1 Using guidance There is some introduction of how to operation the LGT-231 Portable Electro-Stimulation Therapy Device in using guidance, which is convenient for you to understand the use of device.
  • Page 50 6.2 Common problem MStim Reha Application includes a variety of common problems, you can learn more about the LGT-231 Portable Electro-Stimulation Therapy Device and treatment.
  • Page 51 7. Preset protocols 7.1 Add protocols MStim Reha Application internally installed 21 preset protocols. You can click “Preset protocols” to enter the interface. You can click “Add more protocols”, choose the protocols you need, and then click OK button, the operation as following pictures.
  • Page 52 7.2 Delete or sort the protocols To delete a protocol, click the "Edit" button and click " " to delete it. To sort the protocols, press and hold " " to drag the prescription. Click "Finish" when finished.
  • Page 53 7.3 Treatment from the preset protocols Choose the right protocol for treatment as needed. For example, select "Cerebral stroke - NMES", as shown in the following figure. FOR-MRRD0001-EN231 UM0.1...
  • Page 54 Please click the color area to select the treatment parts, and then click OK button to enter the treatment parameters interface. You can modify the parameters as need, and then click “start treatment”. FOR-MRRD0001-EN231 UM0.1...

  • Page 55: Operation Guidance

    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 yellow during charging.
  • Page 56 1.2 Turn on the unit Press the ON/OFF button to turn on the unit to standby. 1.3 Open the MStim Reha and connecting Turn on the MStim Reha Application on your phone and connect the unit to your phone via Bluetooth.
  • Page 57 Click the start button and the treatment begins. 2.3 Adjust output intensity You can adjust the output intensity in the MStim Reha interface, or through "+/-" button on the unit. The output intensity should be increased slowly from small values to avoid excessive stimulation.

  • Page 58: Care And Maintenance

    Care and Maintenance 1. Cleaning Please turn off the device before the cleaning and disinfection operation; 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. 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.
  • Page 59 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.
  • Page 60 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.

  • Page 61: Troubleshooting

    Troubleshooting This chapter summarizes the most common problems you could encounter with the LGT-231 Portable Electro-Stimulation Therapy Device. If you are unable to solve the problem with the information below, please call the distributors. Troubles Possible causes Solutions 1. LCD Display does not The battery of the unit is empty.
  • Page 62 Troubles Possible causes Solutions 3. The status indicator The battery of the unit is empty. Charge the unit (see chapter Preparing for use’). unit flashed Yellow unit switched off. 4. There is not output. 1. Did not press the start button; 1.
  • Page 63 Troubles Possible causes Solutions 6. The MStim Reha APP 1. The electrode lead hose 1. Re-connect the electrode lead on the mobile phone pop connected badly; hose; up tips “electrodes fall 2. The electrodes are poor 2. Re-connect the electrodes. off”, the indictor of the contact with the skin.

  • Page 64: Technical Specifications

    Technical Specifications 1. Stimulator Output Parameters 1.1 TENS Parameters Channels: Dual, separate output intensity control levels for each channel. Output Mode: Normal, Burst, Sweep, Random, Alternation mode Output Waveform: Symmetrical biphasic asynchronous Adjustable, 50μs-500μs, stepping 10μs, ±20% tolerance Pulse Duration: Pulse Frequency: Adjustable, 1Hz-120Hz (Normal mode: 1Hz-100Hz, Burst mode: 20Hz-100Hz), stepping 1Hz, ±1Hz tolerance...
  • Page 65 1.2 NMES Parameters Channels: Dual, separate output intensity control levels for each channel. Output mode: Synchronize output, Alternate output mode Output Waveform: Symmetrical biphasic asynchronous Adjustable, 50μs-500μs, stepping 10μs, ±20% tolerance Pulse Duration: Pulse Frequency: Adjustable, 1Hz-120Hz, stepping 1Hz, ±1Hz tolerance Surge Modulation: Parameter Range...
  • Page 66 1.3 MCR Parameters Channels: One channel Output Waveform: Symmetrical biphasic asynchronous Pulse Frequency: Adjustable, 1Hz-100Hz, stepping 1Hz, ±1Hz tolerance Pulse Duration: 50% of Output Cycle, ±10% tolerance Adjustable, 0μA -100μA, stepping 10 μA, ±1 mA or ±10% tolerance, take Output intensity: larger values (at 500Ω...
  • Page 67 2. Other specifications Product Name Portable electro-stimulation therapy device Model LGT-231 Power supply: Adapter model: HYI11-005 Adapter supply voltage: AC100-240V, 50/60Hz; Adapter output: DC 5V, 2A. Battery: 3.7V, 1400mAh, lithium battery. Line Current Isolation: Patient disconnected when charging.  Expected life The expected life of the main unit is five years under normal usage.
  • Page 68 Dimension: 62mm (W) × 122mm (L) × 27mm (H) Weight: 120g (only main unit)  Classification: Classification (IEC 60601-1): Class II, Type BF Applied Part;  Ingress Protection: IP22;  Mode of operation: Continuous.  Temperature: 5 to 40℃; Environmental ...

  • Page 69: Assistance And Spare Parts

    Assistance and Spare Parts 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.

  • Page 70: Warranty

    Warranty The Manufacturer warrants that the LGT-231 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.

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