Fukuda Denshi LX-7120 Operation Manual
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Fukuda Denshi LX-7120 Operation Manual

Ecg & respiration transmitter
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ECG & Respiration Transmitter
LX-7120
Operation Manual

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Summary of Contents for Fukuda Denshi LX-7120

  • Page 1 ECG & Respiration Transmitter LX-7120 Operation Manual Before using this device, read this operation manual thoroughly. ● Keep this manual near the device for future reference. ●...
  • Page 2 • The company and product names used in this manual are trademarks or registered trademarks. • If this manual has pages missing or out of order, contact Fukuda Denshi for replacement. • Only physician or persons instructed by physicians are allowed to use the equipment.

  • Page 3: Precaution From Fukuda Denshi

    Precaution from Fukuda Denshi Fukuda Denshi is liable for the safety, reliability, and performance of its device only if;  Maintenance, modifications, and repairs are carried out by authorized personnel.

  • Page 4: Equipment Symbols

    Equipment Symbols Refer to the following symbols indicated on the LX-7120 for their meanings. Symbols indicated on the main unit Symbol Description Caution; read the operation manual. Indicates the need to refer to the operation manual before operation. Type CF Applied Part with Defibrillation-Proof Indicates that the degree of protection against electric shock is Type CF Applied Part with defibrillation-proof.

  • Page 5: Precautions For Safe Operation Of Medical Electrical Equipment

    Precautions for Safe Operation of Medical Electrical Equipment Cautions described here are regarding the general instructions for safety use to the patient and the operator. As for cautions about the LX-7120, please refer to the following pages. CAUTION Users should have a thorough knowledge of the operation before using this equipment.

  • Page 6: Non-Explosion Proof

    CAUTION After using the equipment, verify the following items. Make sure to turn off the power of the equipment.  When unplugging the cables, do not apply excessive force on the  cable and pull from its connector. Clean the accessories and cables, and keep them together in one ...

  • Page 7: Precautions About Magnetic Resonance Imaging (Mri)

    Defibrillation Safety WARNING  Use only the lead cable specified by Fukuda Denshi when defibrillating. If used by unspecified lead cable, the device may be damaged, resulting in a safety hazard.  When using the defibrillator, keep away from the electrodes or medicament applied to the patient chest.

  • Page 8: Precautions About The Pacemaker

     Do not use this device with multiple patients simultaneously. CAUTION Do not pick up and/or swing the LX-7120 pulling/grabbing the cord part. The cable could break or get disconnected from the LX-7120. And it may hit people or damage other equipment around.

  • Page 9: Precautions About Waterproof

    For details about the regular replacement, contact your local Fukuda Denshi service representative.  The lid may be damaged from high impact. If the LX-7120 is dropped or is subjected to a high impact, make sure that the lid is not damaged.

  • Page 10: Precautions About Accessories And Optional Accessories

    Precautions about Accessories and Optional Accessories WARNING Use only the accessories, such as ECG Lead cable, specified by Fukuda Denshi for the LX-7120. Otherwise, the LX-7120 cannot deliver its maximum performance and may be damaged, resulting in a safety hazard. CAUTION ...

  • Page 11: Precautions For Use Of Medical Telemeter

     The LX-7120 transmitter must not be co-located or operated in conjunction with any other antenna or transmitter.  The LX-7120 complies with FCC radiation exposure limits set forth for a controlled environment and meets the FCC radio frequency (RF) Exposure Guidelines in Supplement C to OET65.
  • Page 12 When interference or breakdown occurs in telemetry communication, the  user is required to inform the Zone Manager and the Overall Manager of the problems. The Zone Manager and Overall Manager are to deal with the problem properly and/or contact their nearest Fukuda Denshi representative for service.

  • Page 13: Electromagnetic Compatibility

    Electromagnetic Compatibility The performance of this device under electromagnetic environment complies with IEC 60601-1-2 (2007). Precautions for Safe Operation under Electromagnetic Influence CAUTION If any sorts of electromagnetic wave, magnetic field, or static electricity exist around the device, noise interference or malfunction of the device may occur.

  • Page 14: Emc Guidance

    ●Compliance to the Electromagnetic Emissions The LX-7120 is intended for use in the electromagnetic environment specified below. The customer or the user of the LX-7120 should assure that it is used in such an environment. Electromagnetic Environment –...
  • Page 15 ●Compliance to the Electromagnetic Immunity (1) The LX-7120 is intended for use in the electromagnetic environment specified below. The customer or the user of the LX-7120 should assure that it is used in such an environment. Electromagnetic IEC 60601-1-2 Compliance...
  • Page 16 ●Compliance to the Electromagnetic Immunity (2) The LX-7120 is intended for use in the electromagnetic environment specified below. The customer or the user of the LX-7120 should assure that it is used in such an environment. Immunity IEC60601-1-2 Complianc Electromagnetic Environment...
  • Page 17 ●Recommended Separation Distances between Portable and Mobile RF Communications Equipment and the LX-7120 The LX-7120 is intended for use in an environment in which radiated RF disturbances are controlled. The customer or the user of the LX-7120 can help prevent electromagnetic interference by maintaining a minimum distance...
  • Page 18 Blank Page...

  • Page 19: Table Of Contents

    4. ECG Monitoring ................... 9 ■ Connecting the ECG Lead Cable and Electrodes...... 9 ■ Attaching the Electrodes............12 ■ Connecting the ECG Lead Cable to the LX-7120 ....13 5. Respiration Monitoring ............... 15 6. Measurement ..................17 ■ Starting Screen................ 17 ■...
  • Page 20 ■ Changing the Group ID............35 10. Troubleshooting ................37 ■ List of Displayed messages ............. 37 ■ Troubleshooting............... 38 ■ In Case of Dropping the LX-7120 into Water ......40 11. Cleaning and Disinfection ..............41 ■ Cleaning .................. 41 ■ Disinfection ................41 12.

  • Page 21: General Description

    1. General Description The LX-7120 is a radio telemetry transmitter designed to measure the ECG and respiration waveform with one (1) “AA” size (“LR06” size) alkaline battery. Information such as ECG measurements, respiration waveform, battery level, and the conditions of the ECG electrodes are displayed on the LCD of the front panel.
  • Page 22 1. General Description Blank Page...

  • Page 23: Names Of Parts And Their Functions

    2. Names of Parts and Their Functions Channel Number Label Neck Strap Hole Indicates transmitter Attaches the neck strap. channel number. ECG/RESP Input Connector Connects the ECG lead cable Displays measurement to measure ECG and waveform and transmitter respiration waveform. information.
  • Page 24 2. Names of Parts and Their Functions Blank Page...

  • Page 25: Preparation

    3. Preparation 1) Installing the Battery The LX-7120 functions with one (1) "AA" size (“LR06” size) alkaline battery. With new battery, the LX-7120 is capable of approximately 6 days continuous operation. WARNING  Unplug the ECG lead cable when the battery compartment lid is opened.
  • Page 26  Make sure that any foreign particles, such as hairs, are not held on the battery compartment lid and dust is not adhered to the edge of the lid to prevent water entering into the battery compartment area.  Make sure to only turn ON the LX-7120 after closing the battery compartment lid.

  • Page 27: Operating Power Switch

    3. Preparation 2) Operating Power Switch Turning the power switch to “ON” Rotate the power switch to the left until it clicks. LCD screen turns ON and measurement starts. Regarding the LCD screen, refer to page 17 (6. Measurement). The screen automatically turns itself OFF after a minute. After the power is turned ON, make sure to check the remaining battery level on the LCD screen.
  • Page 28 3. Preparation Blank Page...

  • Page 29: Ecg Monitoring

    4. ECG Monitoring ■ Connecting the ECG Lead Cable and Electrodes The optional ECG lead cables for LX-7120 are as follows. ECG Lead Cables AHA color code: Item No. Applicable Lead Remark 3-electrode Hook Type Limb Lead (1CH) CMT-01HTH-0.8DA (White, Black, Red)
  • Page 30 4. ECG Monitoring The relations between the attached electrode positions and lead method are as follows. Attach the electrodes to monitor proper waveform. For 3-electrode lead cable For AHA color code electrode position (No. CMT-01HTH-0.8DA, CMT-01FTH-0.8DA) Black White (LA) (RA) (LL) Standard Limb leads Standard Limb leads can be selected from lead I, lead II, or lead III under...
  • Page 31 4. ECG Monitoring For 5-electrode (Chest) lead cable For AHA color code electrode position (No. CMT-03HTH-0.8DA, CMT-03FTH- 0.8DA) Black White (LA) （RA） Brown Green (RL) (LL) Standard Limb lead and Chest lead One limb lead and one chest lead (Brown) measurements are available. Standard Limb leads can be selected from lead I, lead II, or lead III under the setting of the device.

  • Page 32: Attaching The Electrodes

    4. ECG Monitoring ■ Attaching the Electrodes CAUTION Always use the same type of electrodes. If different types of electrodes are used at the same time, the difference between the polarization potential from each electrode may interfere with monitoring. CAUTION Do not reuse the disposable electrodes.

  • Page 33: Connecting The Ecg Lead Cable To The Lx-7120

    4. ECG Monitoring ■ Connecting the ECG Lead Cable to the LX-7120 Insert the ECG lead cable firmly into the ECG/RESP input connector matching the transmitter’s connector guide and the direction of the notched part on the connector. ECG Lead cable...
  • Page 34  Time constant of this device is shorter than Fukuda Denshi monitors (direct ECG connection). Therefore, there is a difference in the ST measurement value between them. Pay attention to the difference when monitoring a patient from a transmitter or a monitor.

  • Page 35: Respiration Monitoring

    If such event occurs, please disconnect the cardiac monitoring and diagnostic equipment, or follow the procedures described in the operation manual of the pacemaker. (For more details, contact FUKUDA DENSHI personnel, your institution’s professionals, or your pacemaker distributors.) Reference “Minute Ventilation Rate-Adaptive Pacemakers”...
  • Page 36 5. Respiration Monitoring Blank Page...

  • Page 37: Measurement

    LCD of the LX-7120 do not interface with the ones displayed on the screen of the receiving monitor.  The heart rate and respiration rate displayed on the LCD of the LX-7120 may be different from the ones displayed on the receiving monitor.

  • Page 38: Waveform Display

    6. Measurement ■ Waveform Display ●ECG Display Screen (1) ECG1 waveform, heart rate, pacemaker marker, remaining battery level, and electrode check message are displayed. The LCD display will automatically turn itself OFF after 60 seconds if no operation is done. To restart the LCD display, refer to page 29. When the LCD display is active, press the ▽...
  • Page 39  The ECG waveform size setting displayed on the LCD does not interact with the one displayed on the screen of the receiving monitor, because the LX-7120 cannot transmit the setting information of the waveform size to the receiving monitor. If the ECG waveform size displayed on the screen of the receiving monitor is changed, follow the instruction in the operation manual of the receiving monitor.
  • Page 40 6. Measurement ●ECG Display Screen (2) ECG2 waveform, heart rate, pacemaker marker, remaining battery level, and electrode check message are displayed. NOTE If a 3-electrode lead cable is used, this screen will not appear. The LCD display will automatically turn itself OFF after 60 seconds if no operation is done.
  • Page 41 LCD. CAUTION  The ECG waveform size setting displayed on the LCD of the LX-7120 does not interact with the one displayed on the screen of the receiving monitor, because the LX-7120 cannot transmit the setting information of the waveform size to the receiving monitor.
  • Page 42 6. Measurement ●Respiration Display Screen Respiration waveform, respiration rate, remaining battery level, and electrode check message are displayed. The LCD display will automatically turn itself OFF after 60 seconds if no operation is done. To restart the LCD display, refer to page 29. When the LCD display is active, press the ▽...
  • Page 43  The respiration waveform size setting displayed on the LCD does not interact with the one displayed on the screen of the receiving monitor, because the LX-7120 cannot transmit the setting information of the waveform size to the receiving monitor. If the respiration waveform size displayed on the screen of the receiving monitor is changed, follow the instruction in the operation manual of the receiving monitor.
  • Page 44 6. Measurement Blank Page...

  • Page 45: Operation

    -2mV and +2mV. CAUTION The ECG waveform size setting displayed on the LCD of the LX-7120 does not interact with the one displayed on the screen of the receiving monitor, because the LX-7120 cannot transmit the setting information of the waveform size to the receiving monitor.
  • Page 46 ECG display screen (1). CAUTION Do not operate the LX-7120 with the setup screen open to prevent the settings to be changed due to an unintended operation. Make sure to press the Return button to terminate the setup screen. The LCD display will automatically turn itself OFF after 60 seconds if the Return button is not pressed.
  • Page 47 -2mV and +2mV. CAUTION The ECG waveform size setting displayed on the LCD of the LX-7120 does not interact with the one displayed on the screen of the receiving monitor, because the LX-7120 cannot transmit the setting information of the waveform size to the receiving monitor.
  • Page 48 4Ω of change. CAUTION The respiration waveform size setting displayed on the LCD of the LX-7120 does not interact with the one displayed on the screen of the receiving monitor, because the LX-7120 cannot transmit the setting information of the waveform size to the receiving monitor.

  • Page 49: Restarting The Lcd Display

    7. Operation CAUTION Do not operate the LX-7120 with the setup screen open to prevent the settings to be changed due to an unintended operation. Make sure to press the Return button to terminate the setup screen. The LCD display will automatically turn itself OFF after 60 seconds if the Return button is not pressed.
  • Page 50 7. Operation Blank Page...

  • Page 51: Other Setting Items

    8. Other Setting Items The following settings are available for the LX-7120 depending on the use and condition of the patient. For details of the settings, contact our service representative. Items Selection Default Backup Time Constant 0.4 sec., 0.1 sec.

  • Page 52: Changing The Detection Sensitivity Of The Pacemaker Pulse

    AC frequency. Nonetheless, if erroneous detections still occur, change the setting to “Low” in order to decrease the detection sensitivity. It makes the LX-7120 less likely to be interfered by the noise, such as AC frequency.

  • Page 53: Changing The Respiration Detection Signal On/Off

    LX-7120, to distinguish whether the setting of the respiration detection signal ON/OFF is changed. ■ Changing the LCD Contrast The LCD display contrast of the LX-7120 can be changed in 8 steps. For details of the setting change, contact your local Fukuda Denshi service representative.
  • Page 54 8. Other Setting Items Blank Page...

  • Page 55: Changing The Transmitter Channel And Group Id

     Replace promptly the new channel label if the transmitter channel has been changed. ■ Changing the Group ID The LX-7120 transmits its group ID, which it belongs to, to prevent interference with neighboring hospital's transmitter. The receiving monitor checks whether the incoming group ID is the same as the programmed one that the receiving monitor has.
  • Page 56 9. Changing the Transmitter Channel and Group ID Blank Page...

  • Page 57: Troubleshooting

    10. Troubleshooting ■ List of Displayed messages Transmitter (main unit) Message Cause Solution Contact your local Fukuda Failed to transmit Denshi service waveform and representative. value. Faulty EEPROM. Failed to initialize CPU. Message Cause Solution Electrode is off. Check the electrode condition.

  • Page 58: Troubleshooting

    10. Troubleshooting ■ Troubleshooting Make sure of the followings. However, if there is no improvement in the phenomenon, contact your local Fukuda Denshi service representative. Transmitter (main unit) Phenomenon Cause Solution Nothing is displayed No battery or wrong Install the battery correctly.
  • Page 59 Solution “ELECTRODE?” Lead cable is off. Check the connection message is displayed. between the lead cable and the LX-7120. Check the connection between the lead cable and the electrode. Faulty Lead cable. Replace the ECG cable with a new one.

  • Page 60: In Case Of Dropping The Lx-7120 Into Water

    ■ In Case of Dropping the LX-7120 into Water In case of dropping the LX-7120 into water containing disinfectant, pick up the LX-7120 quickly from it. Rinse it well with running water, and dry it thoroughly with a soft cloth.

  • Page 61: Cleaning And Disinfection

    11. Cleaning and Disinfection The Cleaning and disinfection of the LX-7120 and ECG lead cable shall be performed as follows. CAUTION Do not sterilize the LX-7120 and ECG lead cable in any manners, such as radioactive rays, steam, or ethylene oxide. ■ Cleaning Clean the LX-7120 using a squeezed gauze or an absorbent cotton cloth dampened with alcohol or a neutral cleanser.
  • Page 62 11. Cleaning and Disinfection Blank Page...

  • Page 63: Maintenance And Inspection

    To ensure the reliability of waterproof (IPX8) performance of the LX-7120, replace it once a year. You may be able to keep using the LX-7120 without periodic replacement of the lid. However, as it gets older, the reliability of water resistance (IPX8) performance will not be ensured.
  • Page 64 □OK/ □NG compartment lid. should be found. Battery Visually check for the contact Compartment springs, inside the LX-7120, to No deformation, cracks, □OK/ □NG the battery and the lock lever of and rust should be found. the battery compartment lid.

  • Page 65: Standard And Optional Accessories

    This section lists the accessories for the LX-7120. WARNING Use only the accessories, such as ECG Lead cable, specified by Fukuda Denshi for the LX-7120. Otherwise, the LX-7120 cannot deliver its maximum performance and may be damaged, resulting in a safety hazard. CAUTION For quality improvement, specifications are subject to change without prior notice.

  • Page 66: Optional Accessories

    13. Standard and Optional Accessories ■Optional Accessories The following accessories are available as optional for the LX-7120. Purchase them as required. ●ECG, Impedance Respiration Measurement AHA color code: Item Model Type Note 3-electrode (White, Black, ECG Hook Type Lead Cable Red), CMT-01HTH-0.8DA...

  • Page 67: Specification

    DC: one (1) 1.5 V “AA” size (“LR06” size) alkaline battery Continuous Operating Approximately 6 days Time: ※Continuous operating time is assumed when using new “AA” size (“LR06” size) Alkaline battery specified by Fukuda Denshi. Numbers of Lead 3-electrode, 4-electrode, or 5-electrode Electrode: (Limb+Chest) Numbers of Input...
  • Page 68 14. Specification Time Constant 0.4 sec ±25% Switching and available to set 0.1 sec ±25% Pacemaker Pulse Comply with ANSI/AAMI EC13 Pacemaker pulse Detection/ Rejection: rejection capability Protection to Meet the requirement of IEC60601-2-27 Defibrillation: Respiration (Impedance Method) Accuracy of Sensitivity: 10mm/1Ω...

  • Page 69: Operating Environment

    14. Specification Operating Environment Temperature: 10 to 40C Humidity: 30 to 85% RH (No condensation) Vibration/Shock: Comply with IEC60068-2-64:1987, IEC60068-2-32:1975, IEC60068-2-6:1995 Transport / Storage Environment Temperature: -10 to 60C Humidity: 10 to 95% RH (No condensation)

  • Page 70: Displays

    14. Specification ■ Displays The following displays are shown on the LCD of the LX-7120. Display Description Displays after turning on the power. Automatically moves onto the channel Starting Screen display screen. Displays the transmitter channel after turning on the power and also when Channel Display refreshing the screen.

  • Page 71: Details Of The "Electrode?" Message

    14. Specification ■ Details of the “ELECTRODE?” Message The following “ELECTRODE?” messages are displayed on the LCD depending on the selected lead cable and lead. For AHA color code 3-electrode lead 3-electrode lead 3-electrode lead Check cable cable cable Position Lead I display Lead II display Lead III display...

  • Page 72: List Of Setup Items

    14. Specification ■ List of Setup Items This section lists the available selection, default setting, and backup status for each setup item, which is available for the LX-7120. Items Selection Default Backup ECG Lead I, II, III Display Size of ECG (1) ×1, ×1/2...
  • Page 74 39-4, Hongo 3-chome, Bunkyo-ku, Tokyo, Japan Phone:+81-3-3815-2121 Fax:+81-3-3814-1222 Printed in Japan 4L0106260 20100805(01)

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