CONTEC

 

KT88-2400 Series

 Digital Brain Activity Mapping 

Operator’s Manual

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CONTEC

   

   

 

 

         Web. http://www.contecmed.com.cn Email contec@contecmed.com.cn

 

 

 

 

 

 

 

This document contains confidential information that belongs to Contec Medical Systems Co., Ltd. No part of this document may be transmitted, reproduced, used or disclosed outside of the receiving organization without the express written consent of Contec Medical Systems Co., Ltd.

 

 

 

 

 

 

 

 

Copyright and Trademark Notices

 

This document contains information that is protected by copyright. All rights are reserved. No part of this document may be photocopied, reproduced or translated to another language without prior written consent of Contec Medical Systems Co., Ltd. The information contained in this document is subject to change without notice.

 

Responsibility of the User

l   KT88-2400 digital brain electric activity mapping should be used by the physicians who have received professional training.

l   The user should read this operational manual carefully before operating KT88-2400, and operate it in accordance with the manual.

l   The user should observe KT88-2400 and the patient when operating it.

l   The user is responsible to supply the use situations of KT88-2400 to Contec Medical Systems Co., Ltd.

 

Responsibility of Contec Medical Systems Co., Ltd

l   Contec Medical Systems Co., Ltd supplies the standard product to the user.

l   Contc Medical Systems Co., Ltd installs and debugs KT88-2400 and trains the physicians.

l   KT88-2400 should be repaired by Contec Medical Systems Co., Ltd.

l   Contec Medical Systems Co., Ltd should use original accessories to repair KT88-2400.

l   Contec Medical Systems Co., Ltd is responsible to answer the questions about KT88-2400 on time.

 

Other Important Information

The information in this document is subject to change without notice.

 

Contec Medical Systems Co., Ltd makes no warranty of any kind with regard to this material, including, but not limited to implied warranties of merchant ability and fitness for a particular purpose. Contec Medical Systems Co., Ltd assumes no responsibility for any errors of omissions that may appears in this document. Contec Medical Systems Co., Ltd makes no commitment to update nor to keep current the information contained in this document.

 

Technical Support and Service

 

Following are telephone numbers and addresses for contracting our technical support and service personnel.

 

Contec Medical Systems Co., Ltd

Hengshan Road #2-1, Qinhuangdao Economic and Technical Development Zone, Hebei Province

P.R.C.

066004

Tel: 086-0335-8508888

Fax: 086-0335-8508543

E-mail address: contec@contecmed.com.cn

Warranty Information

Your CONTEC Warranty

 

Contec Medical Systems Co., Ltd (hereinafter referred to as “ Contec”) hereby warrants that Contec products (hereinafter referred to as “Products”) shall be free from defects in material and workmanship under normal use, service and maintenance for the warranty period of such Product from Contec or an authorized distributor or representative of Contec Normal use, service and maintenance means operation and maintenance in accordance with appropriate instructions and/or information guides. This Warranty does not apply to the Products caused by any or all of the following circumstances or conditions:

l   Freight damage;

l   Part and/or accessories of the Products not obtained from or approved by Contec;

l   Misapplication, misuse, abuse, and failure to follow the Product instruction sheets and/or information guides;

l   Accident, a disaster affecting the Products;

l   Alterations or modifications to the Products not authorized by Contec;

l   Other events outside of Contec ’s reasonable control or not arising under normal operating conditions.

THE REMEDY UNDER THIS WARRENTY IS LIMITED TO THE REPAIR OR REPLACEMENT WITHOUT CHARGE FOR LABOR OR MATERIALS, OR ANY PRODUCTRS FOUND UPON EXAMINATION BY CONTEC TO HAVE BEEN DEFECTIVE. This remedy shall be conditioned upon receipt of notice by Contec of any alleged defects promptly after discovery thereof within the warranty period. Contec ’s obligation under the foregoing warranty will further be conditioned upon the assumption by the purchase of the Products (ⅰ) of all carrier charges with respect to any Products returned to Contec’s principal place or any other place as specifically designated by Contec or an authorized distributor or representative of Contec, and (ⅱ) all risks of loss in transit. It is expressly agreed that the liability of Contec is limited and that Contec does not function as an insurer. A purchase of a Product, by its acceptance and purchase thereof, acknowledges and agrees that Contec is not liable for loss, harm or damage due directly or indirectly to an occurrence or consequence therefrom relating to the Products. If Contec should be found liable to anyone under any theory (except the expressed warranty set forth herein) for loss, harm or damage, the liability of Contec shall be limited to the lesser of the actual loss, harm or damage, or the original purchase price of the Product when sold.

EXCLUDED FROM THE LIMITED WARRANTY SET FORTH ABOVE ARE CONSUMABLE ITEMS SUCH AS PAPER, BATTERIES, ELECTRODES, PATIENT CABLE, LEAD WIRES AND MAGNETIC STORAGE MEDIUMS.

EXCEPT AS SET FORTH HEREIN WITH RESPECT TO REIMBURSEMENT OF LABOR CHAGES, A PURCHASE’S SOLE EXCLUSIVE REMEDY AGAINST CONTEC FOR CLAIMS RELATING TO THE PRODUCTS FOR ANY AND ALL LOSSES AND DAMAGES RESULTING FROM FROM ANY CAUSE SHALL BE THE REPAIR OR REPLACEMENT OF DEFECTIVE PRODUCTS TO THE EXTENT THAT THE DEFECT IS NOTICE AND CONTEC IS NOTIFIED WITHIN THE WARRANTY PERIOD. IN NO EVENT, INCLUDING THE CLAIM FOR NEGLIGENCE, SHALL CONTEC BE LIABLE FOR INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES, OR FOR ANY OTHER LOSS, DAMAGE OR EXPENSE OF ANY KIND, INCLUDING LOSS OF PROFITS, WHETHER UNDER TORT, NEGLIGENCE OR ATRICT LIABILITY THEORIES OF LAW, OR OTHERWISE. THIS WARRANTY IS EXPRESSLY IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO THE IMPLIED WARRANTY OF MERCHANT ABILITY AND THE WARRANTY OF FITNESS FOR A PARTICULAR PURPPOSE.

Preface

This operation manual introduces you the total function of the KT88-2400 digital brain electric activity mapping and the detail operation procedure.

Please read the manual carefully before use the machine, which makes you easier to use it.

Table of Contents

Introduction

The feature of KT88-2400

The main technical index

Operational regulations

The place of electrode

The system operation

The print

The case to be taken out

The case-store management

Drop out the system

Notice

The notice for installation

The notice for application

The notice for protection

Maintenance and repair

Appendix 

Digital brain electric activity mapping

The clinic application of digital brain electric activity mapping

 

 

Introduction

The features of digital brain electric activity mapping:

  The digital brain electric activity mapping transit head bioelectrical activity into marked intuitionistic image, it becomes an advanced, no wound technical instrument for skull sickness, quatitative analysis for head enginery. Characters for this equipment are as follows:

u  Help to bulge and recognize EEG partial features.

u  Recognize the subtle features which was easy to be ignored ago.

u  Help to academic communication, especially for the amateurs.

u  Evaluate the unusual conditions in the traditional EEG and the unexplained situations by eye measure.

 

The main technical index

1.       Channels: 19 lead EEG, 1 lead ECG, 1 lead respiration

2.       Same module restrain proportion >100dB

3.       The input resistance: 10MQ

4.       Lead chose: single channel, double channel, or at will

5.       The voltage of the power: 220V±10%

6.       The frequency of the power: 50Hz

7.       The environment: Temperature: 0℃--40℃

                  Humidity: <90%

 

This operation manual is used for KT88-2400 series digital brain electric activity mapping. Because of the different setup in every series of machines, this manual is accordance to the largest configuration.

The operation regulation

The place of electrode

This system use silver chloridize channel electrode, drip in brine liquor at 5% at work.. Wash down with clean water after use and airing everday. Cover it to avoid exposal to protect the chlorination on electrode.

Place the electrode according to international system electrode emplacement.

The system operation

Turn on the computer, it enter the KT88-2400 series digital brain electric activity mapping operational system automatically.

Click the “input new patient”; the physician input the parameters according to the patients’ condition. The name item could input English or Chinese. Press “Ctrl+Space” in keyboard would switch into Chinese input mode, and then input Chinese name. The physician can choose the acquired method (rolling screen display or constant display) by mouse’s arrowhead. Click “ready to acquire” and enter video setup.

 

The video setup

Click “prepare to acquire” and enter video setup. The physician can set up the quality, differentiate rate and other parameters of acquired picture.

 

The acquisition control panel

In the acquisition interface, the left is the acquired wave to display the patient’s EEG at real time and the right is the acquisition control pannel to display various of premiums events and control the acquired methods.

 

Click    button, the physician could chose acquired velocity in practice.

Click    button ,the physician could adjust the plus of EEG in practice.

Click    button, the “work frequency disturb” would get rid of AC work frequency disturb which is recommended to use for batter images.

Click    button to determine whether the contiguity of electrode and head, or the LBD would light if one of them was in bad connection.

Click    button to chose acquisition method according to practical use.

Click    button , the physician could chose reference electrode at will when gather EEG according to practice.

Click “end” to stop EEG acquisition.

This menu is for user to replay EEG in secquence.

The physician can choose a segment of EEG to analyze. The method is as follow: remove the arrowhead of the mouse to the beginning of the EEG which is needed to analyze, and remove it to the end of that EEG. Press “SHIFT” on the keyboard, and Click the left key of the mouse, so as to choose the EEG segment.

The chosen EEG segment turns into white. Remove the mouse to EEG, Click the right key of the mouse, and appear    items. Move mouse to “display velocity”, it changes to   , The physician could chose display speed in practice. Move mouse to “display plus”, it changes to    the physician could chose display plus in practice. Move mouse to “play automatically” , and then the physician can choose to play EEG actually.

Finally, Click  button to dispose the chosen EEG segment to FFT exchange and insert value operation.

After the data disposal is over, the EEG is to be analyzed. Click  button enter menus as follows:

This menu is to observe power chart distributing map. Click left button of mouse on any power chart map could magnify this special lead power chart map.

Click  button as follows:

 

The left of this menu is to display the patient’s EEG, and the right is the look down relief map.

      button is used to switch in  the absolute relief map and comparative relief map.

      button  is used to display 19-channel EEG in same screen.

  button  is used to display 11-channel EEG in same screen..

  button is used to display 7-channel EEG in same screen.

 

Click  button as follows:

 

The physician can design compressed chart map according to menu tips:

    

After the design is over, Click “OK” button as follows:

 

This menu is used to display compressed chart map of any two lead of the patient.

X means frequency ,  the unit is Hz.

Y means power, the unit is µ v2 /Hz.

Z means dimension of the compressed chart map , it can be decided by the physician

 

Click  button , and enter the picture 9.

 

The left of this menu is the patient’s EEG. The right is the patient’s 1—30Hz relief map.

Click  button to exchange absolute EEG relief map and comparative EEG relief map.

Click  button , and enter the picture 10.

 

The right of the menu is the patient’s three-dimension stereoscopic EEG.

Press every EEG and turn it, which is easy for the physician to definite it.

Click  to exchange absolute EEG and comparative EEG.

 

Click   button and enter picture 11.

This menu is the patient’s side-view EEG.

Click  button to observe the patient’s side-view EEG from left or right.

Click  button to exchange absolute EEG and comparative EEG.

 

 

This menu is patient’s power chart distributing map.

 

 

Click  button to switch to power chart map. Click any lead ,  you could magnify it.

 

 

   

Click  button and enter the picture 14.

The physician could divide frequency segment according to this menu. Click “OK” button to save and return or “Cancel” button to cancel and return after partition. Click  button after return and enter picture 15.

In this menu, the physician can choose the channel method.(monochannel or double-channel).

After the choice, Click “yes” and display the accordant EEG.

Click  button and enter the picture 16..

In this menu, the physician can design filter according to the patient’s EEG to clear EEG’s disturbance and false balance.

Click “OK” button and appear EEG which has being filtered.

Play

Click  button in the toolbar would play EEG from beginning to end automatically, and  button in the toolbar to stop play.

 

Store the segment

You could chose the required segment by click the beginning of the EEG and click the end of the EEG, in the same time press “shift” on keyboard and press the left button of mouse. After choose EEG segment, Click the “store segment” in the “case management”.

Print

The physician could print the required pictures in the No.4~No.13. Click  button on any picture of them would get the picture17,

and Click “yes” to print relief map or EEG. Click  to print report.

 

Transfer the old case

Click “take the old case out” and enter picture 19.

In this menu, choose the case which is needed to take out by the mouse. Then you would enter menus as follows: other operation just the same as “new patient”.

Case-store management

Click “case-store management” and enter picture 20.

In the picture19, the physician can delete the unnecessary cases by Clicking “Delete” on the keyboard. There would be a “*” before the case number which has being deleted. The deleted case couldn’t transfer any longer.

Logout the system 

Click the  button on the right of the menu to drop out KT88-2400 series digital brain electric activity mapping system.

 

Notice

 

 

The notice for installation

u  Don’t hang anything on the power wire and be treaded by people.

u  The machine needs good ground cable. The electric resistance isn’t more than 4  . don’t use the heat pipe or water pipe as the temporary ground cable.

u  All the holes at the back of the machine should not be covered. Otherwise, the machine will be damaged because it’s too heat.

The notice for application

u  The power voltage and frequency should be 220V and 50Hz.

u  Don’t cover anything on the holes at the back of the machine.

u  Don’t put the machine in a humid environment. When cleaning the machine, please take the plug away from the socket. Don’t use the liquid cleaner or the alcohol to wash it. Please use the wet cloth to wipe it. When the machine meets thunderstorm or it stays for a long time, make sure that the plug is taken away from the socket.

u  The cables should be used in a correct way.

u  In the cold winter, make the machine heat in advance and then use: in the hot summer, don’t turn on the machine for a long time. For example, when the temperature in the room is over 35℃, the machine should be turned off after used for over 2 hours, and then turn it on again.

The notice for protection

u  Don’t open the machine without authorization. The machine should be opened by the experienced technicians.

u  Please take the plug away from the socket when meeting the following conditions:

l  The power wire and the plug are broken.

l  Something drops into the machine.

l  The machine can’t work.

 

Maintenance and troubleshooting

Problem

Cause

Correction

The power light isn’t light.

1. The power plug isn’t put in the socket.

Put the power plug in the socket.

2. The power isn’t connected with the mainframe, or they’re not connected well.

Connect the power wire with the mainframe tightly.

3. The power is broken.

Connect with the Technical department of Contec Medical Systems Co., Ltd

The display light isn’t light.

1. The display plug isn’t connected with the mainframe.

Connect the display plug with the mainframe.

2. The power of the display isn’t turned on.

Turn on the power of the display.

The display’s light is light but no display.

1.The display’s wire isn’t connected with the mainframe.

Connect the display’s wire with the mainframe.

2.The light-control button is turned to the darkest.

Adjust the light-control button.

3.The display is broken.

Connect with the technical department of Contec Medical Systems Co., Ltd

The display’s light isn’t light and no display.

The display is broken.

Connect with the technical department of Contec Medical Systems Co., Ltd

The printer isn’t printed.

 

Read the related part of the operation manual.

The print’s color is too light or not clear.

The ink is used up.

Change another new ink.

The printer doesn’t work.

1.The print line isn’t connected.

Connect the print line tightly.

2.The print line is broken.

Change another new print line.

3.The procedure of the print is wrong.

Turn off the computer, and then turn on the printer, and the computer.

EEG is disturbed a lot.

1.The ground cable isn’t connected well.

Place the ground cable in a standard way.

2.The electrode is corroded.

Change the new electrode.

3.The cramp of the cable is corroded.

Change the new cable.

4.The cable is broken.

Change the new cable.

5.The hair is too dirty.

Wash the hair.

One part is disturbed a lot.

The electrode of that place isn’t connected well.

Wear the electrode again.

Some channel is disturbed a lot.

The electrode of that place isn’t connected well.

Wear the electrode again.

 

 

Appendix

The principle of EEG relief map

EEG relief map is a new method to analyze head bioelectricity in accordance with computer technology and computer picture disposal technology. As a new method around the world right now ,   it transforms huge complex but abnormity head bioelectricity to a form which could reflex quantitative change and orientation by computer. It displays complexion about diversification of head energy, it becomes an excellence , no wound and scientific method for skull sickness diagnose and research on head energy quantitative analysis. It is useful to analysis correctly on head energy using this technology .

Principle and method:

Placement of electrodes: lay 16 lead on outboard head according to international 10/20 system method standard, collect head wave signals and make A/D (modules transform) transform.

F-transform:

Transform the collected head wave signals to power chart map form to display the relationship about head wave frequency flied and power.

Frequency assort:

δfrequency flied: 0.8~3.8Hz

θ frequency flied: 4.0~7.8Hz

α1 frequency flied: 8.0~9.8Hz

α2 frequency flied: 10.0~12.8Hz

β1 frequency flied: 13.0~19.8Hz

β2 frequency flied: 20.0~29.8Hz

 

Insert value operation:

Find out some insert function according to two-dimension insert inside value principle based on these known sixteen number, calculate 2500 point numbers. The expressions are as follows:

Print:

Print the received data to module picture and get power relief picture.

 

Usual relief map:

Some power of δ wave relief map higher than regular value at 8 level and those exceed would belong to abnormities.

Some power of θwave relief map exceed normal value at 10 level local or whole head belong to abnormities.

Evident un-symmetry of αwave relief map about the distributing of the two hemispheres. Those exceed 3 or 5 belong to abnormities.

 

Power chart relief map of patient:

Most of the patient’s relief map would be abnormity and main of those are power exceed of δwave and θwave, especially evident in the forward of head. Followed by the increase of the power of α2wave (namelyαwave) and the power of βwave also has trend to increase.