EDAN INSTRUMENTS CADENCE II Service Manual
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EDAN INSTRUMENTS CADENCE II Service Manual

Fetal monitor
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EDAN INSTRUMENTS, INC
Manual Ver: V1.1
Release Date:Mar.2005
Part Number: MS1-17567-V1.1

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  • Page 1 EDAN INSTRUMENTS, INC Manual Ver: V1.1 Release Date:Mar.2005 Part Number: MS1-17567-V1.1...
  • Page 2 © Copyright EDAN INSTRUMENTS, INC. 2005. All rights reserved. Attention Edan Instruments, Inc. (hereinafter called EDAN) makes no warranty of any kind with regard to this material, including, but not limited to the implied warranties of merchantability and fitness for a particular purpose. EDAN assumes no responsibility for any errors that may appear in this document, or for incidental or consequential damage in connection with the furnishing, performance or use of this material.
  • Page 3 Cadence II Fetal Monitor Service Manual of shipment, EDAN shall, at its option, either repair or replace hardware products which prove to be defective. EDAN software and firmware products which are designated by EDAN for use with a hardware product, when properly installed on that hardware product, are warranted not to fail to execute their programming instructions due to defects in materials and workmanship.
  • Page 4 Cadence II Fetal Monitor Service Manual personal injury or death. CAUTION A CAUTION label advises against actions or situations that could damage equipment, produce inaccurate data, or invalidate a procedure. Note: A NOTE provides useful information regarding a function or procedure.

  • Page 5: Table Of Contents

    Cadence II Fetal Monitor Service Manual Table of Contents CHAPTER 1 OVERVIEW........................7 1.1 P ........................ 7 RODUCT NFORMATION 1.2 T ......................7 ECHNICAL PECIFICATIONS 1.3 F ..................10 ETAL ONITOR PERATION RINCIPLE 1.4 F ........................11 UNCTION ODULES 1.3.1 Power Supply Board..................12 1.3.2 Mainboard .....................13...
  • Page 6 Cadence II Fetal Monitor Service Manual 6.2 C ....................54 ARE AND LEANING OF ONITOR 6.2.1 Cleaner......................55 6.3 C ..................55 ARE AND LEANING OF RANSDUCER 6.3.1 Cleaning of TOCO Transducer ..............56 6.3.2 Cleaning of Ultrasound Transducer ...............56 6.3.3 Cleaning of Fetal ECG Cable ................57 6.4 C...

  • Page 7: Chapter 1 Overview

    Cadence II Fetal Monitor Service Manual Chapter 1 Overview 1.1 Product Information CADENCE Ⅱ provides accurate and reliable monitoring information, using non-invasive ultrasound Doppler, external TOCO technique. RS-485/RS-232 communication port is built, the monitor can be connected with MFM-CNS central monitoring system via this port. The monitor can be connected to wireless network module via a DB9 interface, and the wireless network module will complete the data switch of the monitor and the MFM-CNS central monitoring system.
  • Page 8 Cadence II Fetal Monitor Service Manual Fuse T1.6AL BATTERY 16.8V 6000mAh 3X4 encapsulation (4) Display Backlight: Cold cathode fluorescent Active Area: 103.0(W) x 79.0(H) mm (320 x 240 dots) Resolution: 85 dots per inch (5) Recorder Paper Width: 112mm Effective Printing Width...
  • Page 9 Cadence II Fetal Monitor Service Manual (7) Contraction Internal IUP (optional) Pressure Range (IUP): 0-100mmHg Sensitivity: 5uV/V/mmHg Non-linear Error:±1mmHg Resolution: 1% Zero Mode: Automatic/ Manual External TOCO TOCO Range: 0-100 (%), 135g strength corresponding to 100% Sensitivity: 3.7uV/V/mmHg Non-linear Error:±10%...

  • Page 10: Fetal Monitor Operation Principle

    Operation Principle of Ultrasound Doppler FHR Monitoring Ultrasound transducer is made up of a group of quincunx multi-wafer piezoelectricity transducers. The CADENCE II ultrasound transducer is made up of nine pieces of piezoelectric crystals with uniform distributed eight pieces constituting a circle, and one lying at the center of a circle.

  • Page 11: Function Modules

    1.4 Function Modules CADENCE II Monitor obtains accurate and reliable parameters, e.g. FHR and maternal uterine activity, etc. by using pulsed Doppler ultrasound, external TOCO, etc. invasive detection technology and device. The structure of CADENCE Series may be different...

  • Page 12: Power Supply Board

    Cadence II Fetal Monitor Service Manual according to different configuration. The basic parts of the monitor include: pulsed wave ultrasound transducer, external TOCO transducer, Fetal Manual fetal movement mark, monitor board, mainboard, built-in thermal printer module, power supply module, and Structure Diagram 1.3.1 Power Supply Board...

  • Page 13: Mainboard

    Cadence II Fetal Monitor Service Manual Definitions for power supply output jack pins: PIN No. Function Description PIN1(yellow) D.C. supply output pin: (+12V) PIN2 (red) D.C. supply output pin: Vcc (+5V) PIN3 Null Earth: 0V PIN4、PIN5 (black) PIN6 (blue) D.C. supply output pin: (-12V) 1.3.2 Mainboard...
  • Page 14 Cadence II Fetal Monitor Service Manual PIN4 Earth: 0V PIN5 PIN6 Definitions for 50Pin jack J10 pins: PIN No. Function Description PIN1 PIN2 PIN3 PIN4 PIN5 LCDAD0 PIN6 LCDAD1 PIN7 LCDAD2 PIN8 LCDAD3 PIN9 LCDAD4 PIN10 LCDAD5 PIN11 LCDAD6 PIN12...
  • Page 15 Cadence II Fetal Monitor Service Manual PIN46 PIN47 PIN48 PIN49 PIN50 Definitions for J1 JTAG PIN No. Function Description PIN1 PIN2 Earth: 0V PIN3 PIN4 PIN5 PIN6 NRESET PIN7 PIN8 NULL PIN9 PIN10 Earth: 0V Definitions for J3 RJ-45 PIN No.
  • Page 16 Cadence II Fetal Monitor Service Manual Definitions for J4 FSPO2 PIN No. Function Description PIN1 FSPO2RXD PIN2 FSPO2TXD PIN3 PIN4 Earth: 0V PIN5 PIN6 Earth: 0V PIN7 Definitions for J6 POWER COM PIN No. Function Description PIN1 BATTXD PIN2 BATRXD...

  • Page 17: Fetal Monitor Board

    Cadence II Fetal Monitor Service Manual 1.3.3 fetal monitor Board Fetal monitor board includes ultrasound channel signal processing, AFM channel signal processing, pressure channel signal processing, Doppler audio signal processing, DSP ultrasound and pressure data processing, general alarm audio signal, communication with main board.
  • Page 18 Cadence II Fetal Monitor Service Manual Definitions for J19 TOCO PIN No. Function Description PIN1 PIN2 PIN3 PIN4 PIN5 TOCOP PIN6 Earth: 0V Definitions for J7 HEADER3 PIN No. Function Description PIN1 TDI1 PIN2 PIN3 TDI2 Definitions for J8 HEADER3 PIN No.

  • Page 19: Print Control Board

    Cadence II Fetal Monitor Service Manual 1.3.4 Print Control Board Record Paper Width: 112mm Effective Printing Width: 104mm Dot/Line: 832/mm Resolution: 8dots/mm Working Voltage: 5V Working Circuit: Printhead: 3.4A(Max), 0.9A(Ave) Electrical Machine: 2.4A(Max), 0.5A(Ave) Life: MTBF 5*10EXP (7) 50Km Connect with mainboard by CENTRONIX interface to finish detection of driving, paper empty or not, and the status of printhead.
  • Page 20 Cadence II Fetal Monitor Service Manual Definitions for J1 2005S30P PIN No. Function Description PIN1 PIN2 PIN3 PIN4 PIN5 PIN6 PIN7 PIN8 PIN9 PIN10 PIN11 PIN12 PIN13 LCDCS PIN14 LCDRST PIN15 LCDVEE PIN16 Earth: 0V PIN17 PIN18 PIN19 PIN20 PIN21...
  • Page 21 Cadence II Fetal Monitor Service Manual Definitions for J3 PRINTER 20PINS PIN No. Function Description PIN1 /STB PIN2 PIN3 PIN4 PIN5 PIN6 PIN7 PIN8 PIN9 PIN10 /ACK PIN11 BUSY PIN12 PIN13 /ERR PIN14 PIN15 Earth: 0V PIN16 PIN17 Earth: 0V...
  • Page 22 Cadence II Fetal Monitor Service Manual Definitions for J8 2005S20P PIN No. Function Description PIN1 Earth: 0V PIN2 PIN3 ALARM_G PIN4 PIN5 ALARM_R PIN6 Earth: 0V PIN7 POWER_LED PIN8 Earth: 0V PIN9 PIN10 Earth: 0V PIN11 PIN12 PIN13 PIN14 PIN15...

  • Page 23: Chapter 2 Inspection Of The Monitor

    Cadence II Fetal Monitor Service Manual Chapter 2 Inspection of the Monitor 2.1 System Inspection 2.1.1 Appearance, and Packing Inspection Take the monitor out of packing carton, then check its surface. If it has scratching or stain, please contact your local distributor or us. Check if the six screws (three on left side, and three on right side) used to fix are screwed down.
  • Page 24 Cadence II Fetal Monitor Service Manual : Type B protection. : Type BF protection. : Type CF protection. Socket for Channel 1 Ultrasound Transducer (for connection with ultrasound transducer, Protection Category B) TOCO/IUP Socket (TOCO input socket-for connection with external contractions (TOCO) transducer, Protection Category B/ IUP input socket, for connection with intrauterine pressure connector, Protection Category BF).

  • Page 25: Control Panel

    Cadence II Fetal Monitor Service Manual Figure 2-3 Position of power on indicator Power indicator Charge indicator 2.1.3 Control Panel There are several keystrokes with different functions on the front panel of the monitor. The diagram is showed as Figure 2-5, and their primary functions are as follows:...
  • Page 26 Cadence II Fetal Monitor Service Manual Press the key to return to the main interface quickly under the status of menu. （2） Function: Disable/Enable alarm Press this key, the system accesses alarm pause status. But the alarm information will be displayed, and the alarm indicator flashes continuously. Press this key again, the system terminates alarm pause status and returns to normal monitoring status, then the alarm sound resumes.
  • Page 27 Cadence II Fetal Monitor Service Manual Notes: ① The alarm description can never be paused or cancelled. ② The alarm sound is that of the higher level when more than one kind of alarm level exists. When an Alarm Occurs: Check the patient's condition;...
  • Page 28 Cadence II Fetal Monitor Service Manual Function: Freeze Press this key at the main interface, the key can be pressed to play back automatically. Press the key to play back forward. Press the continuously to play back forward quickly till the speed is the fastest. If press the key at this time, the speed of playback is decelerated till slowest.

  • Page 29: Indicator

    Cadence II Fetal Monitor Service Manual Press this key to return to the main interface quickly under the status of menu. Function: ① Press the key to select fetal heart audio channel, the default fetal heart audio channel is US1. ② When the cursor is moved to the menu item to be executed/ revised, this item will be encircled by a pane.

  • Page 30: Recorder

    Cadence II Fetal Monitor Service Manual Table 2-7 Indicator description Indicator Status of Indicator Meaning Green and twinkle Fetal heart signal quality is optimal Indicator (including Orange and twinkle Fetal heart signal quality is unacceptable channel 1 and channel 2)
  • Page 31 Cadence II Fetal Monitor Service Manual 20bpm should be added when calculating the numerical value of FHR2/DECG. After printing the information mentioned above, “FHR1”, “FHR2”/“DECG” will be recorded above the relevant trends. In the process of later printing, the recorder will print system time once every 10 minutes and “FHR1”, “FHR2”/“DECG”...
  • Page 32 Cadence II Fetal Monitor Service Manual If the paper is used up or paper jam happens, you have to feed paper into the recorder, the operation procedure is as follows: ① Push the position simultaneously on both sides of the recorder cover to open it.

  • Page 33: Networking Function

    Connect RS-485/232 socket of the monitor (see Figure 2-11) to network cable, the data will be transmitted automatically. Refer to MFM-CNS Obstetrical Central Monitoring System (Carevista) User Manual for details. Figure 2-11 CADENCE II Fetal Monitor rear panel － 33 －...

  • Page 34: Connecting With Personal Computer (Pc)

    Cadence II Fetal Monitor Service Manual 2.1.7 Connecting with Personal Computer (PC) Connect RS-485/232 socket of the monitor (see Figure 2-13) with PC via special RS-232 cable provided by EDAN. Refer to CADENCE Insight User Manual. Chapter 3 Installing the Monitor...

  • Page 35: Installing Power Supply Board

    Cadence II Fetal Monitor Service Manual 3.1 Installing Power Supply Board Figure 3-2 the power board Figure 3-3 fixup the power board on the back panel NOTE: connect the three wires with the power supply board as showing in figure 3-4...

  • Page 36: Installing Main Board

    Cadence II Fetal Monitor Service Manual 3.2 Installing main board Figure 3-5 The main board 20 pins socket connecting with the interface board 30 pins socket connecting with the interface board 6pins socket connecting with the power line Figure 3-6 setting the main board on the back panel...

  • Page 37: Installing Fetal Monitor Board

    Cadence II Fetal Monitor Service Manual 3.3 Installing Fetal monitor Board Figure 3-7 the fetal monitor board Figure 3-8 fixup the fetal monitor board The socket connecting the marker with fetal monitor The wire connecting the fetal board monitor board with the main...

  • Page 38: Installing Battery

    Cadence II Fetal Monitor Service Manual 3.4 Installing battery Figure3-10 the battery Figure 3-11 Installing the battery connect the wires place the battery close the door of the battery Note: reverse the back panel ,you can see the door of the battery.
  • Page 39 Cadence II Fetal Monitor Service Manual Figure 3-13 setting the print board connecting the wires fixup the board 3.6 installing the interface board Figure 3-15 the interface board The 30 pins socket The 20pins socket NOTE: connecting the 20pins and 30pins sockets with correspondings in the figure3-5 after setting the inteface board.
  • Page 40 Cadence II Fetal Monitor Service Manual Figure 3-17 the figure of setting all the boards Figure 3-18 close the up panel and the down panel NOTE: removing the monitor is the opposite operation of the installing . － 40 －...

  • Page 41: Troubleshooting

    Cadence II Fetal Monitor Service Manual 3.7 Troubleshooting 3.7.1 Monitor Failure Phenomenon Possible Cause Solution ①Fuse is damaged ①Change fuse Power on, LCD has no ②Power supply has a ②Change power supply display, and the power failure indicator is off, the fan ③...

  • Page 42: Display Failure

    Cadence II Fetal Monitor Service Manual 3.7.3 Display Failure Phenomenon Possible Cause Solution ①LCD is damaged ①Change LCD Power ②Bad LCD connecting ② Repair change power is normal connection wire but no display, or ③Mainboard is damaged ③Change mainboard improper flashes ④...

  • Page 43: Chapter 4 Packing Of The Monitor

    Cadence II Fetal Monitor Service Manual ① Mainboard has a ①Change mainboard Inaccurate failure measurement value ② Transducer has a ②Change transducer failure Chapter 4 Packing of the Monitor This chapter describes the packing of the monitor, configuration, and important notes.

  • Page 44: Chapter 5 Monitoring

    Cadence II Fetal Monitor Service Manual Chapter 5 Monitoring 5.1 Ultrasound Monitoring of FHR The ultrasound monitoring is a method to obtain FHR through maternal abdominal wall. Put the FHR transducer on maternal abdomen to transmit lower energy ultrasound wave to fetal heart, then receive the echo signal from it.

  • Page 45: Fetal Ecg Electrode Monitoring Of Fhr

    Cadence II Fetal Monitor Service Manual The elasticity of belt can be adjusted, which make the pregnant woman monitored in the comfortable situation. Also verify the position of transducer one has not changed. Verify the monitor is displaying fetal heart rate values and traces for both fetuses.
  • Page 46 Cadence II Fetal Monitor Service Manual The fetal spiral electrode should not be applied to the fetal face, fontanels or genitalia. Do not apply when placenta previa is present; when the mother has visible genital herpes lesions or reports symptoms of prodromal lesions; when the mother is HIV sero-positive;...
  • Page 47 Cadence II Fetal Monitor Service Manual ⑥ Insert connector of fetal ECG cable into the DECG socket on the monitor. ⑦ Check the setup of DECG arrhythmia logic. The transient heart rate change that equals to or is greater than ±25bpm is not recorded when enabling the DECG arrhythmia logic (The DECGAntiArt at the menu is set to ON).

  • Page 48: Dual Heart Rate Monitoring

    Cadence II Fetal Monitor Service Manual clearly identify the fetal presenting part. ④ Holding the drive handle, ensure the spiral electrode is retracted approximately one inch (2.5 cm) from the distal end of the guide tube. ⑤ Place the guide tube firmly against the identified presenting part.

  • Page 49: Monitoring Uterine Activity

    Cadence II Fetal Monitor Service Manual 5.4 Monitoring Uterine Activity Use a TOCO transducer to external measure uterine activity, or use an intrauterine pressure catheter to internal measure uterine activity (Only ruptured membranes and adequate dilation can the internal contractions be monitored).

  • Page 50: Monitoring Contractions (Internal)

    Cadence II Fetal Monitor Service Manual WARNING : Under no circumstances are transducers to be used to monitor patients under water. Notes: ① Do not use coupling gel on the TOCO transducer or transducer contact area. ② Check the function by TOCO transducer, and observe the change of relevant value.
  • Page 51 Cadence II Fetal Monitor Service Manual (2) Insertion and Application ① Using aseptic technique, remove the catheter from the package. ② Perform vaginal exam to insure ruptured membranes and adequate dilation. ③ Advance the catheter tip to the cervical os along the examination hand, using the hand as a guide.
  • Page 52 Cadence II Fetal Monitor Service Manual Figure 5-6 Rezeroing the system ② Adjust the monitor to zero. ③ After releasing hand from monitor, release the blue button on the cable and resume monitoring. To Check Cable Function If cable performance is in question, follow this procedure: ①...

  • Page 53: Remote Patient Marker Recording Of Fetal Movement

    Cadence II Fetal Monitor Service Manual WARNING : The cable test function is not meant to check the accuracy of the system, only to confirm cable function. CAUTION : Since procedures vary according to hospital needs/ preferences, it is the responsibility of the hospital staff to determine exact...

  • Page 54: Chapter 6 Maintenance, Care And Cleaning

    Cadence II Fetal Monitor Service Manual Chapter 6 Maintenance, Care and Cleaning 6.1 Preventive Maintenance (1) Visual Inspection The user must check that the equipment, cables and transducers do not have visible evidence of damage that may affect patient safety or monitoring capability before use.

  • Page 55: Cleaner

    Cadence II Fetal Monitor Service Manual CAUTION ① Although the monitor is chemically resistant to most common hospital cleaners and non-caustic detergents, different cleaners are not recommended and may stain the monitor. ② Many cleaners must be diluted before use. Follow the manufacturer’s directions carefully to avoid damaging the monitor.

  • Page 56: Cleaning Of Toco Transducer

    Cadence II Fetal Monitor Service Manual Although transducers are designed for durability, they should be handled with care. Rough handling could damage the cover, piezoelectric crystals and mechanical movement. The cover is made of a soft plastic, and contact with hard or sharp objects should be avoided.

  • Page 57: Cleaning Of Fetal Ecg Cable

    Cadence II Fetal Monitor Service Manual ① Wipe the transducer with a cloth. ② Immerse the transducer in a solution of soap and water, or a cleaning solution. Use only the following cleaning solutions: Z BURATON LIQUID Z MIKROZID Z ETHANOL 70%...

  • Page 58: Sterilization

    Cadence II Fetal Monitor Service Manual 6.6 Sterilization To avoid extended damage to the equipment, sterilization is only recommended when stipulated as necessary in the hospital maintenance schedule. Sterilization facilities should be cleaned first. Use the following table to choose a sterilant.

  • Page 59: Care Of Record Paper

    Cadence II Fetal Monitor Service Manual CAUTION : Check carefully after cleaning, sterilization, or disinfection of monitor and accessories. If aging and damage are found, please do not use them to monitor. Note: EDAN has no responsibility for the effectiveness of controlling infectious disease using these chemical agents.
  • Page 60 Cadence II Fetal Monitor Service Manual EDAN INSTRUMENTS, INC. 4/F., New Energy Bldg., No.2009, Nanyou Rd., Nanshan District, Shenzhen, Guangdong Province, P. R. China. (518054) TEL: ＋85-754-26062220 FAX: ＋85-754-26062022 － 60 －...

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