Narcotrend Compact M Operating Instructions Manual

Download

Page 1

Brain Function Monitor for the Operating Room

and the Intensive Care Unit

(Version ICU)

Operating Instructions

(Software version 3.2)

MT MonitorTechnik GmbH & Co. KG

Maienbass 27

24576 Bad Bramstedt

Germany

Document: NAT_OperatingInstructions_ICU_US_Rev12, date: 2018-05-25

Page 2

• Warning:

The Medical Device Narcotrend is provided for the exclusive use of qualified physicians or personnel under their direct supervision. The numerical and graphical results from a recording must be examined with respect to the patient’s overall clinical condition. The recording preparation quality and the general recorded data quality, which could affect the report data accuracy, must also be taken into account.

It is the physician’s responsibility to make the diagnosis or to obtain expert opinion on the results and to institute correct treatment if indicated.

• Caution:

Federal law restricts this device to sale by or on the order of a physician.

Contact:

Narcotrend-Service

Fuhrberger Strasse 4

30625 Hannover

Germany

Phone: +49 (0) 4192 / 201753

Fax: +49 (0) 4192 / 201754

eMail: [email protected]

Web: www.narcotrend.de

Page 3

Table of Contents

1 Introduction ........................................................................................................... 5

2 Equipment description .......................................................................................... 6

2.1 Operation ............................................................................................................ 7

2.2 Battery operation ................................................................................................. 7

2.3 USB port .............................................................................................................. 8

2.4 Bluetooth (IEEE 802.15.1) ................................................................................... 8

2.5 IntelliBridge connector (optional) ......................................................................... 9

2.6 RS232 connector ................................................................................................. 9

3 Safety instructions .............................................................................................. 10

4 Putting into operation ......................................................................................... 12

4.1 Device setup...................................................................................................... 12

4.2 Device setup (IntelliBridge (optional)) ................................................................ 12

4.3 Applying the electrodes ..................................................................................... 13

4.4 Start recording / Start screen ............................................................................. 15

4.5 Options / Start screen ........................................................................................ 16

5 Recording screen ................................................................................................ 17

5.1 Title line ............................................................................................................. 17

5.2 EEG .................................................................................................................. 17

5.3 Stage / Index ..................................................................................................... 18

5.4 Additional parameters ........................................................................................ 19

5.4.1 EMG ............................................................................................................. 19

5.4.2 BSR .............................................................................................................. 19

5.4.3 STI ................................................................................................................ 19

5.5 Diagrams ........................................................................................................... 19

5.5.1 Cerebrogram ................................................................................................. 20

5.5.2 Relative Band Activities / Power .................................................................... 20

5.5.3 Quantiles ....................................................................................................... 20

5.5.4 Power Spectrum ........................................................................................... 21

5.5.5 DSA .............................................................................................................. 21

5.6 EEG analysis for children in the first year of life ................................................. 22

5.7 Button bar .......................................................................................................... 23

5.8 Review mode ..................................................................................................... 24

5.9 Electrode settings .............................................................................................. 25

5.10 Marker ............................................................................................................... 26

5.11 Options .............................................................................................................. 27

6 EEG and evaluations (RS232 / IntelliBridge connector) ................................... 28

6.1 EEG .................................................................................................................. 28

6.2 Narcotrend-Index NI .......................................................................................... 28

6.3 Additional parameters ........................................................................................ 29

6.4 Electrode check ................................................................................................. 30

6.5 Error messages ................................................................................................. 30

7 Analyse recording ............................................................................................... 31

7.1 View .................................................................................................................. 33

7.2 Save .................................................................................................................. 35

7.3 Print ................................................................................................................... 35

7.4 Delete ................................................................................................................ 35

Page 4

8 Cleaning, maintenance, repair ............................................................................ 36

8.1 Care and cleaning .............................................................................................. 36

8.2 Recommended checks ...................................................................................... 37

8.3 Error messages ................................................................................................. 38

8.4 Battery ............................................................................................................... 40

8.4.1 Checking the battery...................................................................................... 40

8.4.2 Changing the battery ..................................................................................... 40

8.5 Disposal ............................................................................................................. 40

9 Technical data ...................................................................................................... 41

9.1 Symbols ............................................................................................................. 41

9.2 Classification and technical data ........................................................................ 42

9.3 Spare parts and article numbers ........................................................................ 43

9.4 EMC-Guidance .................................................................................................. 44

10 List of figures ....................................................................................................... 47

Page 5

1 Introduction

The Narcotrend-Compact M serves the purpose of brain function monitoring and was developed specifically for use with hypnotically acting drugs in operating rooms, intensive care units and for clinical research. The Narcotrend-Compact M includes the Narcotrend-Index, a processed EEG parameter, which may be used as an aid in monitoring the effects of certain hypnotically acting anesthetic agents.

Under the influence of narcotics/anesthetics, the EEG reveals very characteristic changes. The EEG can therefore be used to assess the hypnotic status of the patient. Based on a large number of parameters derived from the EEG, multivariate statistical methods are used to carry out an automatic classification of the EEG on a scale ranging from stage A (conscious) to stage F (very deep hypnosis). This division of stages is refined by means of an EEG index (100 = conscious, 0 = very deep hypnosis).

Fig. 1: EEG index, EEG stages und typical EEG patterns

The automatic classifications in variation of time constitute the cerebrogram. This cerebrogram provides the user with important information on the hypnotic status of the patient in the course of the recording.

An impedance check is available in order to ensure good signal quality. During an ongoing recording, the program carries out automatic electrode tests at regular intervals. In addition, extensive algorithms for automatic detection of artifacts have been implemented in the program.

• The automatic assessment is not allowed to be the sole criterion of a

narcosis or sedation controlling function. With respect to the dosing of narcotics and sedatives, the overall clinical findings must be taken into account.

Page 6

2 Equipment description

The Narcotrend consists of the following components:

• Narcotrend-Compact M

• Narcotrend-Compact M - power supply

• Patient lead 1-channel (PKM1)

• Patient lead 2-channel (PKM4) (optional)

• Mounting clamp (optional)

• Use only the original Narcotrend-Compact M - power supply.

Touchscreen

Interface for patient lead

On/Off switch

Fig. 2: Narcotrend-Compact M, front panel

Page 7

Space for

type plate

USB Port

Page 7

4 holes to affix Mounting clamp (VESA 50)

IntelliBridge connector (optional)

Connection for

Narcotrend-

Compact M –

Power Supply

Fig. 3: Narcotrend-Compact M, rear panel

2.1 Operation

The device is switched on by pressing the On/Off switch briefly. The software is operated completely via the integrated touchscreen, i.e. all input

operations are made by touching the screen briefly.

• The touchscreen reacts very sensitively. Please don’t use sharp or

pointed objects like pens or pencils for operation.

RS232 connector

Battery box

To switch off the device use the button Q

2.2 Battery operation

The Narcotrend-Compact M is equipped with an integrated battery that allows the device to be used for at least 2 hours without being connected to a power supply system.

The battery charging time is approx. 2 hours when the device is switched off and approx. 8 hours when the device is switched on.

UIT

on the screen.

Page 8

2.3 USB port

The USB 2.0 interface is provided for data backup of EEG measurements and to store PDF files on USB storage devices. In some cases, USB storage devices are not detected. To resolve this problem it is recommended to use another USB storage device.

USB flash drives can be connected.

• The USB port provides 500 mA at 5 V.

• The USB port is used to archive stored recordings on the connected

USB storage media.

2.4 Bluetooth (IEEE 802.15.1)

The integrated Bluetooth interface enables the transmission of EEG signals and evaluated parameters to store or display the values on a Bluetooth-enabled external device. The reception of data from the external device is not provided.

The point-to-point connection enables just one device to connect with the Narcotrend- Compact M at one time.

Thereby the risk of interference is reduced and the integrity of the data is ensured. For further information see the document: “NAT_InterfaceSpecification_2017-09-26”.

• This device contains

FCC ID: PVH0946 IC: 5325A-0946

• 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.

Bluetooth is a registered trademark of Bluetooth SIG, Inc.

Page 9

2.5 IntelliBridge connector (optional)

The integrated IntelliBridge connector enables the transmission of EEG signals and evaluated parameters to preconfigured Philips-IntelliVue patient monitors of the series MP40-90 / MX700 / MX800.

Name and driver version of the Philips EC10 module:

865115/101 IntelliBridge EC10 Module with OpenInterface driver. The OpenInterface driver must be the revision A.2. The accurate name of the driver

is “ED101-A.2“.

2.6 RS232 connector

The RS232 interface enables the transmission of EEG signals and evaluated parameters e.g. Narcotrend-Index to store or display the values on an external device (see also chapter 4.5 options -> configurations). The reception of data from the external device is not provided.

Pin allocation:

Pin Signal 2 RS232 TxD (Narcotrend-Compact M) 3 RS232 RxD (Narcotrend-Compact M) 5 RS232 Ground

For further information see the document: “NAT_InterfaceSpecification_2017-09-26”.

• Integrating the Narcotrend-Compact M into a network can lead to

previously unidentified risks for the patient. These risks should be identified, analyzed, evaluated and controlled by the responsible organization. Changes to the network could introduce new risks that require additional analysis.

Changes to the network include:

- changes in network configuration

- connection of additional items

- disconnection of items

- update of equipment

- upgrade of equipment

For all Interfaces:

• For evaluation purposes, primarily the data that is displayed by the

Narcotrend-Compact M shall be used.

• As data communication errors cannot be excluded, data on the external

device have to be checked with regard to plausibility.

• USB, RS232 and IntelliBridge are intended to be connected to medical

electrical equipment complying with IEC 60601-1 with SELV.

• The length of the data cable used may not exceed 3 m.

Page 10

3 Safety instructions

• Read this entire manual of operating instructions carefully before putting the

device into operation. Pay special attention to the marked instructions.

• This equipment is intended for use by healthcare professionals only.

• The automatic assessment is not allowed to be the sole criterion of a narcosis

or sedation controlling function. With respect to the dosing of narcotics and sedatives, the overall clinical findings must be taken into account.

• Prior to each application, check the functional safety and proper condition of

the device. A damaged device must not be put into operation.

• For safe use, connect the Narcotrend-Compact M - power supply to a

protective earth conductor.

• Use only the power cords supplied by MT MonitorTechnik GmbH & Co. KG.

• For putting into operation use only the components that belong to the device.

Only original parts from MT MonitorTechnik GmbH & Co. KG must be used in the system.

• The Narcotrend-Compact M - power supply is an essential part of the device

Narcotrend-Compact M. No other power supply must be used.

• All the consumables that are used (e.g. electrodes, preparation paste, etc.)

must comply with the equivalent safety requirements and/or harmonized national standards.

• The use of a defibrillator is restricted. The electrodes must not be placed

between the defibrillator pads.

• Before putting the device into operation, check the connection cables for any

signs of damage. Damaged cables and plug-and-socket devices must be replaced.

• Operating the device beyond the operation temperature range is not

permissible (see technical documentation). Do not cover the air vents.

• No liquids must be penetrating into the device. Whenever any liquid does

penetrate into the device, the device must not be put into operation again until it has been properly checked by an expert.

• The device is not intended to be used in the presence of oxygen enriched

environments or flammable anesthetic mixtures.

• Whenever the device has been subjected to increased mechanical stress

(dropping, strong vibrations or severe impact), the device must not be put into operation again until it has been properly checked by an expert.

• This device may cause radio interference or may disrupt the operation of

nearby equipment. It may be necessary to take mitigation measures such as reorienting or relocating the equipment or shielding the location.

• The equipment needs special precautions regarding electromagnetic

compatibility and needs to be installed and put into service according to information provided in accompanying documents.

Page 11

• Use of this equipment adjacent to or stacked with other equipment should be

avoided because it could result in improper operation. If such use is necessary, this equipment and the other equipment should be observed to verify that they are operating normally.

• Using accessories other than those specified may result in increased

electromagnetic emissions or decreased electromagnetic immunity of the Narcotrend-Compact M.

• Portable and mobile radio frequency communication devices (incl. antennas)

can affect the equipment. There should be a distance of at least 30 cm (12 inches) to the Narcotrend-Compact M and its accessories.

• The equipment is not designed for use in MRI environment.

• In case of simultaneous use of the device together with other systems or

devices, the sum of all leakage currents is not allowed to exceed the permissible values: (in accordance with IEC 60601-1: 100 µA (AC) and 10µA (DC)).

• When using a high-frequency surgical device, care must be taken to ensure

that the EEG electrodes are correctly placed (refer to the section "Applying the electrodes"). In order to reduce the risk of burns and irritation to the skin during use, EEG electrodes may not be situated between the operation area and the neutral electrode. It is also absolutely necessary to follow the use and safety instructions included with the high-frequency surgical device. It is forbidden to continue to operate the system if the neutral electrode is defective.

• During the use of diathermy/high-frequency surgical devices, disturbances

may occur in the EEG signal or in automatic classification.

• Whenever the failure of the device or the limitation of the proper function of

the device becomes detectable, this is always a clear indication of a defect. In such cases, further operation of the device is then no longer permissible. The device must then be subjected to proper inspection by an expert.

• No assembly tasks must be carried out on the components of the device,

since trouble-free operation can no longer be guaranteed in such cases. It is not allowed to open the device and to make any changes to the cables or electrodes.

• The electrodes and the push button adapters may only be placed on the

patient’s head, because otherwise other patient’s applications could be disturbed.

• The electrodes and the push buttons adapters must not come into contact

with electrically conductive parts and earth.

• At any time, it must be possible to separate the device from the mains supply

by disconnecting the mains plug. Consider this when placing the device.

• As a general rule, always avoid that anything external comes into contact with

the electrical connector pins.

• The patient should not be touched at the same time as the interfaces and the

DC connectors of the Narcotrend-Compact M - power supply.

Page 12

4 Putting into operation

4.1 Device setup

When setting up the device, please proceed as described below:

• Connect the Narcotrend-Compact M via its external power supply to a power socket.

• Switch on the Narcotrend-Compact M.

• Place the electrodes on the patient's head (see below).

• Connect the patient lead to the input on the front side of the

Narcotrend-Compact M.

• (Optional) Connect the RS232 interface connector to the parent host device.

• Use only the components (power supply (incl. power cords, patient lead)) that

belong to the device.

• For safe use, connect the Narcotrend-Compact M - power supply to a

protective earth conductor.

• Prior to each application, check the functional safety and proper condition of

the device. A damaged device must not be put into operation.

• Do not block the ventilation inlet holes on the equipment’s rear panel.

• The touchscreen reacts very sensitively. Please don’t use sharp or pointed

objects like pens or pencils for operation.

4.2 Device setup (IntelliBridge (optional))

When setting up the device, please proceed as described below:

• Plug the Philips-IntelliBridge EC10 module in a free slot space of the PhilipsIntelliVue patient monitor.

• Connect the Narcotrend-Compact M to the connecting cable (CAT-5 cable) and the Philips IntelliBridge EC10 module.

• Place the electrodes on the patient's head.

• Connect the patient lead to the Narcotrend-Compact M.

Once the Narcotrend-Compact M is connected to the Philips-IntelliVue patient monitor, the data transfer begins including the EEG and the results of the automatic classification.

Page 13

4.3 Applying the electrodes

As a standard procedure, the registration of the EEG is carried out with self-adhesive disposable electrodes, which are placed on the forehead. They are known for their simplified handling and long-lasting, firm fit. Use the following electrode:

Narcotrend Electrode EE-0203

• The Narcotrend Electrodes are disposable and should not be re-used.

The electrodes are unsuitable if they are re-used.

• Avoid kinking and vigorous pulling of the patient lead because both can

result in cable defects.

• Always follow the instructions of the electrode manufacturer as well.

• Electrodes made of different materials must not be used together.

• Avoid placing the electrodes over bone gaps, scars or skin lesions.

• Whenever electrodes are placed on oedematous skin areas, it is

important to note that the amplitudes can be lower here than over nonoedematous areas.

• Make sure that there are no moisture bridges between the electrodes.

• Lay the patient lead so that it moves as little as possible during the

recording. Furthermore, the patient should not be lying on the electrodes or on the patient lead since this can result in malfunctions during the recording.

The electrodes should be placed on the hairless skin area of the scalp. They should be positioned close to the hairline. In the region close to the eyes artifacts may occur, especially in stages of light hypnosis.

Page 14

Ref

(R)

Fig. 4: Electrode positions for disposable electrodes, 1-channel (PKM1)

* The can be placed anywhere in the forehead area.

Fig. 5: Electrode positions for disposable electrodes, 2-channel (PKM4)

• Channel 1 (1a1b) is generally positioned on the healthy side; the evaluation always refers to channel 1. Channel 2 (2a2b) is positioned on the side to be operated, or sick side.

1. Wipe the skin at the electrode positions with alcohol or an alcohol pad.

2. Apply a drop of preparation cream (0.5 – 1 ml) to a gauze swab. Use the swab to treat the skin at the electrode positions carefully and thoroughly.

3. Rub the skin dry with a dry gauze swab.

4. Pull off the protective material from the electrode and then stick the electrode on the skin. Avoid exerting pressure on the center of the electrode since this could cause the electrode gel to be pressed under the adhesive ring, thus reduces the electrode adhesion.

5. Connect the pushbutton adapters of the patient lead to the electrodes.

6. Seal the pouch with unused electrodes as airtight as possible.

erence electrode

• Spacing: at least 8 cm (3 in) between 1a and 1b (1-channel recording) 1a/2a and 1b, 1a/2a and 2b (2-channel recording)

• Electrode impedances: < 2 kΩ (max. 8 kΩ) Ensure uniform impedance values to the extent possible.

Page 15

4.4 Start recording / Start screen

After the Narcotrend-Compact M has been switched on, the dialogue for starting a new recording is displayed:

Fig. 6: Start screen

If the electrodes are already applied and the patient lead is connected, the impedances are displayed in the upper area of the screen.

The date of birth is entered by using the numeric keypad, as in the figure above. You can also assign a name for the recording (e.g. patient name). Press the keyboard

symbol on the right-hand side next to the input line for Name. The input operation is carried out via the displayed screen keyboard.

The button

LAST RECORD

accepts the date of birth and the name of the last record in the

corresponding input lines. To start a recording the following requirements must be fulfilled

• patient lead is connected

• a valid date of birth has been entered

• the input line “Name” is not empty

• the internal battery is not empty

• there is enough free space on the memory card

Not fulfilled conditions are displayed below the input fields. If all conditions are fulfilled, start the recording via the button S

TART RECORDING

. The

“Recording screen” appears and from now on the data will be stored. It is not possible to make a 1-channel-recording with a 2-channel-lead. The button R The button Q

EVIEW

is used to show stored recordings (chapter 7).

UIT

is used to switch off the device.

• The touchscreen reacts very sensitively. Please don’t use sharp or

pointed objects like pens or pencils for operation.

Page 16

4.5 Options / Start screen

On the Start screen, you can use the O

PTIONS

button to make global program settings.

This includes:

Electrode Settings

Select electrode type: Standard or (Needle (currently not available)) Electrode Check Interval: The time interval between the automatic impedance

measurements can be changed.

Max. Impedance: Shows the set warning / limit value of the permissible

impedance of an electrode.

Max. Impedance Difference: Shows the set warning / limit value of the permissible

impedance difference of the electrodes.

See also chapter 5.9, Electrode Check.

Date / Time

To change the time or date, change the corresponding values and confirm with the A

PPLY

button.

Language

The language used for the device can be set by selecting the corresponding button. Marker

Up to 20 different marker texts can be defined in order to access markers with the predefined texts during the measurement.

Configuration

• User Preferences: o If the option "Show query for channel 1" is activated, the position of the

electrodes of channel 1 (left side of the head / right side of the head / alternative position) is requested before the start of the measurement.

A corresponding marker is set at the beginning of the measurement.

• Service: Setup and maintenance menu for service technicians.

• Device Information: Displays device and version information.

Page 17

5 Recording screen

In the recording screen, all information about the recording are displayed. Using the button bar at the bottom margin of the screen, the program is controlled in the recording mode.

Fig. 7: Recording screen

5.1 Title line

The title line indicates the following information (from left to right):

• Name

• Date of birth and age in years/months

• Date and time

• Bluetooth / RS232-symbol (when function is switched on)

• Power supply symbol or battery symbol

In the title bar also system messages, such as information about the battery capacity are displayed.

5.2 EEG

The EEG data currently coming from the patient are indicated in the raw EEG window. In the case of a 2-channel recording, the top curve indicates Channel 1, and the bottom curve indicates Channel 2.

Within the EEG window, information about artifacts and status messages are also displayed.

Page 18

5.3 Stage / Index

The current automatically classified EEG stage and the EEG index are indicated in the right top part of the recording screen:

Stage: A – B0 – B1 – B2 – C0 – C1 – C2 – D0 – D1 – D2 – E0 – E1 – E2 – F0 – F1 Index: 100 0

Conscious Deepest hypnosis Every stage from A to F1 refers explicitly to a range of indices.

Stage Index

A 95 - 100 B0 90 - 94 B1 85 - 89 B2 80 - 84

C0 75 - 79 C1 70 - 74 C2 65 - 69 D0 57 - 64 D1 47 - 56 D2 37 - 46 E0 27 - 36 E1 20 - 26 E2 13 - 19 F0 5 - 12 F1 0 - 4

• A/B classification: In the ICU version not provided

• The current assessment always refers to Channel 1.

• If the raw EEG is not classified, additional information, e.g. recognized

artifacts or atypical signal patterns were displayed. The information is recorded in the course of time over the cerebrogram (See the following overview).

Information Description

Start Recording was started successfully, evaluation is running Impedance At least one impedance limit has been exceeded Artifact The EEG signal is loaded with artifact interference Atypical Atypical signal patterns Sharp waves Occurrence of epilepsy-typical potentials EMG EMG superposition of the EEG signal

Page 19

5.4 Additional parameters

These parameters are displayed on the right side of the recording screen.

5.4.1 EMG

EMG = electromyogram The EMG index is a measure for the intensity of the electrical muscle activity. The index is displayed on a scale from 0 (no muscle activity) to 100 (very high amount of muscle activity).

5.4.2 BSR

BSR = burst suppression ratio The burst suppression ratio quantifies the suppression percentage of a 60 s EEG epoch. It is displayed on a scale from 0 (no suppression detected) to 100 (isoelectric EEG).

5.4.3 STI

STI = sharp transient intensity The STI detection shows in three stages the frequency and the intensity of sharply contoured potentials within the last minute.

Artifacts may be involved in rare cases with the sharply contoured potentials detected (e.g. cautery).

5.5 Diagrams

The diagrams being offered are displayed in this window. The diagram changing operation is carried out via the button N

EXT DIAGRAM

Page 20

5.5.1 Cerebrogram

The cerebrogram shows the results of the automatic assessments of the EEG in the course of time. In the 2-channel version, only the values from the channel 1 are displayed.

Fig. 8: Cerebrogram

In the gray gradient bar above the cerebrogram, the STI gradient (top) and the detected artifacts (bottom) are recorded. The left axis shows the stages A - F with the corresponding sub-stages and the right axis shows the index range 0 to 100. In an ongoing recording, a white triangle at the upper margin of the cerebrogram indicates the current time.

5.5.2 Relative Band Activities / Power

The percent activity proportions for the individual frequency bands and the absolute power are displayed.

Fig. 9: Relative Band Activities / Power, 1-channel and 2-channel

5.5.3 Quantiles

This diagram shows the median (50% quantile) and the spectral edge frequency (95% quantile).

Fig. 10: Quantiles, 1-channel and 2-channel

Page 21

5.5.4 Power Spectrum

The power is displayed in the power spectrum depending on the frequency. The individual frequency bands are delimited from one another by vertical lines:

δ (delta band) : 0.5 – 3.5 Hz θ (theta band) : 3.5 – 7.5 Hz α (alpha band) : 7.5 – 12.5 Hz β (beta band) : > 12.5 Hz

In the very deep stages E2, F0 and F1, the power spectrum is shown in gray.

Fig. 11: Power Spectrum, 1-channel and 2-channel

5.5.5 DSA

The DSA (Density Spectral Array) is a color-coded representation of the frequency components of an EEG (violet = low power values, red = high power values).

Fig. 12: DSA, 1-channel and 2-channel

Page 22

5.6 EEG analysis for children in the first year of life

The analysability of anesthesia EEGs registered for children in the first months of life, will depend to a large extent on the children's level of development. Appearing from the age of approximately three months until the age of 12 months in an increasing number of children, are typical EEG anesthesia stages, which can be classified visually and automatically.

EEG classification among children under the age of 60 days

For this age group only EEG classifications for stages with implied or clear suppression lines (E2 to F1) are displayed. The scale of the cerebrogram is designed accordingly. If there is an EEG without suppression lines, the output is “Undiff. EEG”. This stands for “undifferentiated EEG”.

EEG classification among children between the age of 60 days and the age of 1

For children of this age the full A-F scale is displayed on the left side of the cerebrogram window. From the outset of measurements the EEG is analysed for certain attributes, which suggest a mature and thus fully classifiable EEG. As long as no fully classifiable EEG is detected, instead of an indication of stage or index, the output “Undiff. EEG” is displayed in the index field, if the raw EEG shows no sign of suppression lines. If the EEG has been graded as classifiable, from now on classifications can also be outputted throughout the stages E2 to F1.

Page 23

Button

Action

5.7 Button bar

The program is controlled in the recording mode via the button bar on the bottom edge of the screen:

Changes the content of the diagram window.

Starts the review mode.

Starts the manual electrode check and shows the impedance values of each electrode. The button text is changed to “EEG”. Pressing the button again stops the manual electrode test and displays the EEG again.

Shows the menu for setting and editing markers (only available in the extended version).

Generates from the current screen a PNG image file.

Opens a dialogue to change the program options.

Stops the recording of the EEG. The Start screen is displayed again.

Page 24

5.8 Review mode

To start the review mode, press the button S possible to access previous EEG epochs and diagrams of the current recording. This mode enables the user to scroll back and forward within up to 24 hours of the current recording. The current EEG is still recorded, analysed and saved while the review mode is active.

CROLL TREND

. In the review mode it is

Fig. 13: Recording screen during the review mode

• In the review mode, the current EEG and classification is not shown.

This is indicated by the red flashing message „Review“.

A vertical line in the diagrams with a time axis (e.g. Cerebrogram) marks the recording time of the displayed EEG and the related parameters.

It is possible to choose any point on the time axis by tapping on the touchscreen or to navigate through the recording via the following buttons.

The markers that are located within a time range of ± 2 minutes of the selected time will be displayed in a text box.

Page 25

Button

Action

Changes the content of the diagram window.

Generates from the current screen a PNG image file.

Jumps to the start / end of the recording.

1 hour back / ahead.

5 seconds back / ahead.

Ends the review mode and returns to the recording screen to display the current values.

5.9 Electrode settings

A manual electrode check can be carried out at any time independent of the automatic electrode checks.

Adherence to the limit values for the impedances is required in order to ensure proper operation of the device. Furthermore, it is important to make sure that the impedance values of the individual electrodes are as uniform as possible. Whenever the limit values for the impedances or the differences between the impedances are exceeded, analysis of the incoming EEG data is impossible, and a corresponding message is shown.

Standard limit values:

Impedances Impedance differences

Standard electrodes

< 8 kΩ < 5 kΩ

Page 26

Button

Action

5.10 Marker

The MARKER button displays a menu for setting and editing markers.

Fig. 14: Set and edit markers

Sets markers with predefined text.

...

The text can be changed through the global program requirements (O

PTIONS

button on the

start screen).

Shows the list of predefined markers 1-10.

Shows the list of predefined markers 11-20.

Sets markers with self-defined text.

Shows the list of all set markers. The text of set markers can be changed.

Closes the menu and switches back to the recording screen.

• When a marker has been set, it is indicated by a yellow triangle above

the upper margin of diagrams with a time axis.

Page 27

5.11 Options

This dialogue is used to adjust several program options. The preferences for the automatic electrode check and the diagram scales can be

changed.

Fig. 15: Menu - Options

• The settings in this dialogue are valid only for the current recording.

Page 28

Narcotrend

Index

Stage

Comment

100

- 95 A awake

94 - 90 B0

89 - 85 B1

84 - 80 B2

79 - 75 C0

74 - 70 C1

69 - 65 C2

64 - 57 D0

56 - 47 D1

46 - 37 D2

36 - 27 E0

26 - 20 E1

19 - 13 E2

12 - 5 F0

6 EEG and evaluations (RS232 / IntelliBridge

connector)

The Narcotrend-Compact M provides the following values and evaluations via the RS232 / IntelliBridge connector.

6.1 EEG

Depending on the connected patient lead, the one-channel or two-channel EEG is transmitted (EEG or EEG1/EEG2).

6.2 Narcotrend-Index NI

Result of the automatic classification.

Only for IntelliBridge:

On the Philips-IntelliVue patient monitor only the Narcotrend-Index can be represented, the stage is not visible.

The following table shows the relationship between Narcotrend-Index and stage.

4 - 0 F1

• The Narcotrend-Index always refers to Channel 1.

deep hypnosis

Page 29

Label

6.3 Additional parameters

There are additional parameters like the EMG index, the BSR and the STI available, see table below.

Only for IntelliBridge:

To view the additional parameters in the IntelliBridge device data window, either

• select the setup key on the EC10-module, or

• select the External Devices SmartKey and then select the pop-up key with the

device name on it, or

• direct tap on the EEG curve and select in the appearing window “External Devices”, then tap on „Show Device Data“.

*L/LT = Channel 1 (left) *R/RT = Channel 2 (right)

Parameter

EMG index EMG EMG EMG index (EMG = electromyogram) is a measure of the

BSR BSR LT BSR

STI* STI STI

Delta % DL LT %DL

Theta % TH LT %TH

Alpha % AL LT %AL

Beta % BE LT %BE

1-Channel

2-Channel

RT BSR

RT %DL

RT %TH

RT %AL

RT %BE

Description

intensity of the electrical muscular activity. The EMG index is shown on a scale of 0 (no muscle activity) to 100 (very strong muscle activity).

The BSR (burst suppression ratio) is the percentage of suppression lines in the EEG. The value refers to the last 60 s and is issued as a value between 0 (no suppression lines) and 100 (continuous suppression line).

STI = Sharp Transient Intensity

The STI detection shows on a scale of 0 to 100 the frequency and the intensity of sharp potentials within the last minute.

Rel. spectrum power Delta: 0.5 – 3.5 Hz

Rel. spectrum power Theta: 3.5 – 7.5 Hz

Rel. spectrum power Alpha: 7.5 – 12.5 Hz

Rel. spectrum power Beta: > 12.5 Hz

Power TP LT TP

Median MPF LT MPF

Edge frequency

Imp. 1a 1a 1a Impedance for electrode 1a [kΩ] Imp. 1b 1b 1b Impedance for electrode 1b [kΩ] Imp. Ref Ref Ref Impedance for electrode Ref [kΩ] Imp. 2a 2a Impedance for electrode 2a [kΩ] Imp. 2b 2b Impedance for electrode 2b [kΩ]

SEF LT SEF

RT TP

RT MPF

RT SEF

Total output [µV²]

The median corresponds to the 50% quantile of the power spectrum [Hz]

The spectral edge frequency corresponds to the 95% quantile of the power spectrum [Hz]

Page 30

INOP

Description

6.4 Electrode check

To ensure the proper working of the system, the impedance values may not exceed a certain threshold. Furthermore, make sure that the impedance values of the individual electrodes are as uniform as possible. At too high impedances or impedance differences no evaluation of the incoming EEG data is possible, and an appropriate message (NARCOTR CHECK IMP) is outputted.

Impedances Differences of impedances

Threshold values

< 8 kΩ < 5 kΩ

6.5 Error messages

The following error messages are outputted:

NARCOTR LEAD OFF Patient lead is not connected. NARCOTR CHECK IMP One or more impedance values have exceeded the

maximum limit. Check the position of the electrodes on the

patient's head and the connections at the electrode lead. NARCOTR 50/60 HZ AC artifacts occur in the signal. NARCOTR INTERFER Errors may occur in the EEG signal, e.g. by high-frequency

surgery (cautery). EMG No classification due to high intensity of the electrical

muscle activity.

• In case of excessive load of artifacts the Narcotrend-Index is not

calculated.

Page 31

7 Analyse recording

Select the button R recordings or screenshots that have been stored. A recording or screenshot is selected by direct touch or via the buttons on the right-hand side next to the list.

Only for recordings:

At the bottom of the screen the Cerebrogram of the selected recording is shown (max. the first 90 minutes).

EVIEW

in the start screen. The dialogue displays a list of all

Fig. 16: Dialogue „Review“

Page 32

Button

Action

The buttons on the right have the following functions:

Switchover from recordings to screenshots.

Moves the selection bar up.

Marks a selected recording/screenshot and moves the selection bar down.

Marks all recordings/screenshots.

Moves the selection bar down.

Displays the selected recording/screenshot (review).

Copies the selected recordings/screenshots to an USB flash drive.

Creates a PDF-File on the USB flash drive.

Deletes the selected recordings/screenshots.

Closes the dialogue. Returns to the start screen.

Page 33

7.1 View

The selected recording or screenshot is read and displayed.

Only for recordings:

If recordings which are longer than 24 hours shall be displayed, at first the recording period (“day”) has to be selected. This day will then be shown completely.

Apart from the button bar, the screen is identical with the review mode screen of an ongoing recording.

Fig. 17: Screen “View” (review mode)

Page 34

Button

Action

Button

Action

Changes the content of the diagram window.

Shows the button bar to navigate through the recording.

Shows the list of all markers (only available in the extended version).

Generates from the current screen a PNG image file.

Opens a dialogue to change the diagram scales.

Ends the display of the recording and returns to the dialogue „Analyse recording“.

A vertical line in the diagrams with a time axis (e.g. Cerebrogram) marks the recording time of the displayed EEG and the related parameters.

It is possible to select any point on the time axis by tapping on the touchscreen or to navigate through the recording via the buttons.

Date and time in the title line are identical with the currently marked and displayed recording time.

Via the button S

CROLL TREND

, it is possible to access a further button bar to navigate

through the recording.

Changes the content of the diagram window.

Generates from the current screen a PNG image file.

Jumps to the start / end of the recording.

1 hour back / ahead.

5 seconds back / ahead.

Ends the review mode and returns to the recording screen to display the current values.

Page 35

7.2 Save

The selected or all marked recordings or screenshots are saved on a USB flash drive.

• This is possible when the USB storage medium has been recognized

and accepted by the device.

• The connected USB storage medium has to be FAT32.

• Due to the great variety of existing USB storage media, we cannot

guarantee that each USB storage medium will be accepted by the device.

• Depending on the memory capacity, the detection of a USB storage

medium may take some minutes.

• The USB port provides 500mA at 5V.

7.3 Print

For the selected or for all marked recordings, PDF files consisting of the cerebrograms are created on the connected USB flash drive. Each PDF file contains the whole course of a recording.

• Please read the notes concerning USB storage media in section 7.2

7.4 Delete

Delete the selected or all marked recordings or screenshots definitely from the device.

Page 36

8 Cleaning, maintenance, repair

8.1 Care and cleaning

To clean the Narcotrend-Compact M and the display surface use a lint-free cloth moistened with warm water (max. 40 °C / 104 °F) and soap, a thinned non-corrosive cleaner, or an ammonia/alcohol-based cleaner.

To disinfect the Narcotrend-Compact M and the display surface use a lint-free cloth dampened with a 10% bleach / 90% water solution (household bleach [containing less than 10% sodium hypochlorite]) or wipe the surfaces with disinfectant containing alcohol (e.g. Meliseptol®) or disinfectant with the active ingredient chlorine dioxide (e.g. Tristel Jet®).

After cleaning / disinfection, dry all areas with a lint-free absorbent paper towel. Sterilization is not carried out. The cleaning / disinfection of the accessories, e.g. patient leads, are carried out in the same way described above.

• Use cleaning and disinfecting agents always in observance to the

manufacturer's instructions.

• Do not allow any water to enter the housing.

• Do not use abrasive detergents.

• Do not mix disinfectants (such as bleach and ammonia), dangerous

gases can occur.

Page 37

1 k

8.2 Recommended checks

• The recommended checks must only be carried out by a qualified

service technician.

• Before and during each application, observe the safety instructions

included in Chapter 3.

Inspections related to safety and measuring technology are not required. However, it is advisable to carry out the following tests every 12 months.

Visual inspection

• Presence of all system components

• Signs of damage on the Narcotrend-Compact M (cracks, missing housing parts)

• Condition of the plug-in connections on the Narcotrend-Compact M (firmly

seated in the housing, pins not bent)

• Condition of the patient lead (sheath, plug-in connections undamaged)

• Proper labeling (type plates fitted, legible)

Electrical measurements

• Patient leakage current (application part: electrode pushbutton adapter)

Functional test (if test adapter is available)

• Starting an EEG recording incl. impedance measurement after plugging a test adapter into the pushbutton adapter.

• A simulated zero line must be output. The impedance values must amount to approx. 1 kΩ.

Documentation

• Preparing a test report including identification of the inspector, the measuring method and the test results.

Ω Ω Ω

Page 38

Error messages

Description

Battery is low. Connect power

8.3 Error messages

No patient lead is connected Patient lead is not connected to the monitor. To start a

new measurement a patient lead must be connected.

Impedance too high! Adjust electrodes

Impedance difference too high

Check Electrodes! One or more electrodes have no measurable contact with Electrodes offline: (1a…2b)

„off“ “?”

Shown in screen “electrode check”

Connect 1-channel patient lead

Type in the “Date of birth“! To start a measurement you must enter a date of birth.

The measured impedance value of one or more electrodes exceeds the maximum limit. Check the position of the electrodes on the patient's head and the connections to the patient cable. Press the pad gently or glue on a new electrode.

The difference between two measured impedance values exceeds the maximum limit. Check the position of the electrodes on the patient's head and the connections to the patient cable. Press the pad gently or glue on a new electrode.

the skin. Check the position of the electrodes on the patient's head and the connections to the patient cable. Press the pad gently or glue on a new electrode.

Check the placement/fit of the electrodes whose impedance levels are not displayed as green.

Without the additional option 2-channel, 2-channel measurement cannot be started. Connect a 1-channel patient lead and then start a new measurement.

Check “Date of birth“! The entered date of birth is incorrect or is in the future.

Check the date of birth.

Type in the “Name“! To start a measurement you must enter a name. The

name of the measurement can also be "measurement 000001". You can also enter the patient's ID.

The monitor is operated on battery power and the battery

supply!

Battery is empty. Connect power supply!

Battery is empty. Recording is terminated!

is nearly empty. Connect the Narcotrend-Compact M power supply to continue working.

The monitor is operated on battery power and the battery is empty. Connect the Narcotrend-Compact M - power supply immediately to prevent that current measurement is automatically stopped before the power goes off.

The unit is operated on battery power and the battery is empty. To prevent data loss, the current measurement has been completed. Connect that Narcotrend-Compact M - power supply to prevent the device switches off.

Page 39

Error messages

Description

Not enough free disk space. Recording terminated!

The current measurement was stopped because there is not enough space available to store the data. Push the button R

EVIEW

to save or delete some of the past

measurements and get free space on the hard disk.

EEG storage left: < 100 hours The available capacity is less than 100 hours. It is

possible to start measurements but it is recommended to delete measurements in the “Review mode”. If necessary you can save the measurements beforehand.

Impedance Due to high impedance values or impedance differences,

a classification is impossible. Check the position of the electrodes on the patient's head and the connections to the patient cable. Press the pad gently or glue on a new electrode.

50 Hz or 60 Hz AC artifacts occur. In case of excessive artifact load, the

signal is not evaluated. If the error persists please contact support (see contact on the back of the cover page).

EMG Due to excessive EMG artifacts, a classification is

impossible. (EMG = electromyogram, intensity of electrical muscle activity)

Undiff. EEG This message will only be displayed with the occurrence

of an undifferentiated EEG in the case where measuring takes place in children aged 12 months or less. Such an undifferentiated EEG cannot be classified apart from E2F1. In the case of the occurrence of a differentiated EEG, this message will not be displayed, but instead classified even in the case of children aged 12 months or less. Also see Chapter 5.6 in connection with this.

Page 40

8.4 Battery

The internal battery is a consumable that loses its capacity after longer use. If the mains buffering time is no longer achieved the battery should be replaced.

8.4.1 Checking the battery

Connect the Narcotrend-Compact M to the mains for at least 2 hours. Interrupt the power supply and switch the equipment on. If the Narcotrend-Compact M can no longer be operated for 2 hours in battery mode the battery may be replaced.

8.4.2 Changing the battery

• The internal battery must only be replaced by a qualified service

technician.

• Do not change the battery while the Narcotrend-Compact M is in use

with a patient.

• Use only original parts. See "Spare parts and part numbers."

The following steps are to be carried out:

1. Unplug the power supply from the Narcotrend-Compact M.

2. Open the battery box by loosening the 2 screws at the back side.

3. Remove the battery by disconnecting the battery cable.

4. Plug in the battery cable of the new battery and place the battery in the battery box.

5. Replace the battery box cover and fix the 2 screws again.

6. Reconnect the power supply and test the device.

8.5 Disposal

• Do not dispose of the device with unsorted household waste.

• The Narcotrend Electrodes are disposable and should not be re-used.

The electrodes are unsuitable if they are re-used.

The Narcotrend-Compact M (especially the battery) and the patient lead must be disposed by a disposal company for electronic wastes.

Disposable parts must be discarded according to hospital rules and in an environmentally safe way.

Page 41

9 Technical data

9.1 Symbols

IPX1

Follow instructions for use

Consult the instructions for use

Attention

Type BF applied part

Indicates ON / OFF for a part of equipment

IP-Code (Protection against dripping water (vertically falling drops))

Federal law (U.S.A.) restricts this device to sale by or on the order of a

MEDICAL — GENERAL MEDICAL EQUIPMENT

AS TO ELECTRICAL SHOCK, FIRE AND MECHANICAL HAZARDS ONLY IN ACCORDANCE WITH ANSI/AAMI ES60601-1 (2005) + AMD 1 (2012)

Manufacturer

Date of manufacture

Order number

Serial number

Lot number

Expiration date

For single use only

Temperature limit (from...to)

Latex-free

Do not dispose of the device with unsorted household waste

The last two digits of the serial number indicate the year of production (e.g. 18 = 2018, 19 = 2019).

Page 42

0482

9.2 Classification and technical data

Classification

Product Narcotrend Type/Model Narcotrend-Compact M

Manufacture MT MonitorTechnik GmbH & Co. KG Maienbass 27 24576 Bad Bramstedt, Germany Intended use EEG - measurement and analysis with output a parameter for anesthesia and sedation control Classification according to Annex IX of Directive 93/42/EWC IIb concerning Medical Devices

UMDNS EEG-Monitor 12-602 Class Medical equipment of protection class II Electromagnetic Compatibility IEC 60601-1-2 Class A (not life-supporting) IP-Code IPX1

MEDCERT Zertifizierungs-und Prüfungsgesellschaft für die Medizin GmbH Kennnummer: 0482

Operating conditions

Operating mode Continuous operation Environmental temperature 0 °C to +34 °C (+32 °F to +93°F) Storage temperature -10 °C to +60 °C (+14 °F to +140 °F) Max. relative humidity 85% (non-condensing) Min. barometric pressure 70 kPa

Power Supply

Identifier E2DFMW3_E 30 Input 100–240 V~ / 50–60 Hz / 620-380 mA Power Supply Narcotrend-Compact M - power supply Exchangeable mains plug system IEC (CEE 7/7), USA (NEMA 5-15P (hospital grade))

Battery

Type Lithium-Ion Battery operating time Approx. 120 minutes

Monitor

Type TFT colour display Size / Resolution 8.4” / 800 x 600 pixels Touchscreen Resistive

Page 43

Article

No. Article

US, 1,8 m

US, 3

Interfaces

USB 2.0 5 V, max. 500 mA Bluetooth IEEE 802.15.1 IntelliBridge connector OpenInterface Revision IB-ED101-A.2 RS 232 5 VDC ±10%, 150 mA

EEG Inputs

Input impedance >10 MΩ Bandwidth 0.53 Hz to 45 Hz

Dimensions, weight

Width x height x depth 230 x 235 x 85 mm (9.06 x 9.25 x 3.25 in) Weight 2.1 kg (4.63 lb)

9.3 Spare parts and article numbers

NC-0124 NC-0116 Configuration ICU Version NC-0125 Option Philips IntelliBridge Interface NC-0103 Option Extended Version NC-0102 Option 2-Channel Version EK-0301 Patient lead PKM1, 1-channel (3 electrodes) EK-0306 Patient lead PKM4, 2-channel (4 electrodes)

EE-0203-25

EE-0203-250 NC-0110

NC-0113

NC-0114

Narcotrend-Compact M (T5)

Narcotrend Electrode EE-0203 (1 pouch à 25 pcs.)

Narcotrend Electrode EE-0203 (10 pouches à 25 pcs.)

Narcotrend-Compact M - power supply Mains Cord for Narcotrend-Compact M - power supply (

plug: NEMA 5-15P (hospital-grade), 125 V, 10 A mains cord: SJT 3/C 18, AWG, 300 V, VW-1/FT2, 105 °C appliance plug: 250 Vac, 10 A, C13

Mains Cord for Narcotrend-Compact M - power supply ( plug: NEMA 5-15P (hospital-grade), 125 V, 10 A mains cord: SJT 3/C 18, AWG, 300 V, VW-1/FT2, 105 °C appliance plug: 250 Vac, 10 A, C13

)

NC-0122 Test adapter for Narcotrend device NC-0123 Test adapter for Narcotrend patient lead NC-0104 Mounting clamp, rotatable NC-0109 Li-ion battery pack

Page 44

Guidance and Manufacturer’s Declaration

- Electromagnetic Emis

sions

Emissions test

Compliance

Electromagnetic en

vironment

- guidance

Recommended separation distances between portable and mob

ile

Separation distance according to frequency of transmitter [m]

150 kHz to 80 MHz

80 MHz to 800 MHz

800 MHz to 2,5 GHz

9.4 EMC-Guidance

The Narcotrend-Compact M is intended for use in the electromagnetic environment specified below. The customer or the user of the Narcotrend-Compact M should ensure that it is used in such an environment.

RF emissions CISPR 11

Harmonic emissions IEC 61000-3-2

Voltage fluctuations/ flicker emissions IEC 61000-3-3

RF communications equipment and the Narcotrend-Compact M

The Narcotrend-Compact M is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or the user of the Narcotrend-Compact M can help prevent electromagnetic interferences by maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and the Narcotrend-Compact M as recommended below, according to the maximum output power of the communications equipment.

Group 1

Class A

N/A

The Narcotrend-Compact M must emit electromagnetic energy in order to perform its intended function. Nearby electronic equipment could be affected.

The Narcotrend-Compact M is suitable for use in all establishments other than domestic and those directly connected to the public low-voltage power supply network that supplies buildings used for domestic purposes. The EMISSIONS characteristics of this equipment make it suitable for use in industrial areas and hospitals (CISPR 11 class A). If it is used in a residential environment (for which CISPR 11 class B is normally required) this equipment might not offer adequate protection to radiofrequency communication services. The user might need to take mitigation measures, such as relocating or reorienting the equipment.

Rated maximum output power of

transmitter [W]

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 meters 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 - An additional factor of 10/3 is used in calculating the recommended separation distance for transmitters in the frequency range 80 MHz to 2,5 GHz to decrease the likelihood that mobile/portable communications equipment could cause interference if it is inadvertently brought into patient areas. NOTE 2 - These guidelines might not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures, objects and people.

d = 1.2√P

d = 2.3√P

Page 45

Guidance and manufacturer’s declaration

- electromagnetic immunity

Immunity test

EC 60601 test level

Compliance level

Electromagnetic

The Narcotrend-Compact M is intended for use in the electromagnetic environment specified below. The customer or the user of the Narcotrend-Compact M should assure that it is used in such an environment.

environment - guidance

Electrostatic discharge (ESD) IEC 61000-4-2

Electrical fast transient/ burst IEC 61000-4-4

Surge IEC 61000-4-5

Voltage dips, short interruptions and voltage variations on power supply input lines IEC 61000-4-11

± 8 kV contact ± 15 kV air

± 2 kV for power supply lines ± 1 kV for input/ output lines

± 1 kV differential mode ± 2 kV common mode

0% U

for 0.5 cycle (0, 45, 90, 135, 180, 225, 270, 315 degree)

0% UT for 1 cycle (0 degree)

70% UT for 25/30 cycles (0 degree)

± 8 kV contact ± 15 kV air

± 2 kV for power supply lines ± 1 kV for input/output lines

± 1 kV differential mode ± 2 kV common mode

0% U

for 0.5 cycle (0, 45, 90, 135, 180, 225, 270, 315 degree)

0% UT for 1 cycle (0 degree)

70% UT for 25/30 cycles (0 degree)

Floors should be wood, concrete, or ceramic tile. If floors are covered with synthetic material, the relative humidity should be at least 30%.

Mains power quality should be that of a typical commercial or hospital environment.

Mains power quality should be that of a typical commercial or hospital environment. If the user of the Narcotrend- Compact M requires continued operation during power mains interruptions, it is recommended that the Narcotrend-Compact M is powered from an uninterruptible power supply or a battery.

Power frequency

3 A/m N/A Power frequency magnetic (50/60 Hz) magnetic field IEC 61000-4-8

NOTE 1 - UT is the AC mains voltage prior to the application of the test level.

fields should be at levels characteristic of a typical location in a typical commercial or hospital environment.

Page 46

Guidance and manufacturer’s declaration

- electromagnetic immunity

Immunity test

IEC 60601 test

Compliance level

Electromagnetic environment

watts according to the transmitter

icinity of equipment marked with

Conducted RF IEC 61000-4-6

Radiated RF IEC 61000-4-3

level

3 Vrms 150 kHz to 80 MHz

3 V/m 80 MHz to 5.8 GHz

3 Vrms

3 V/m

guidance

Portable and mobile RF communications equipment should be used no closer to any part of the Narcotrend-Compact M, 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

manufacturer and d is the recommended separation distance in meters. Field strengths from fixed RF transmitters, as determined by an electromagnetic site survey, should be less than the compliance level in each frequency range. Interference could occur in the v the following symbol:

NOTE 1 - At 80 MHz and 800 MHz, the higher frequency range applies. NOTE 2 - These guidelines might not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures, objects, and people.

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 Narcotrend-Compact M is used exceeds the applicable RF compliance level above, the Narcotrend-Compact M should be observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as reorienting or relocating the Narcotrend-Compact M. Over the frequency range of 150 kHz to 80 MHz, field strengths should be less than 7 V/m.

Page 47

10 List of figures

Fig. 1: EEG index, EEG stages und typical EEG patterns ........................................ 5

Fig. 2: Narcotrend-Compact M, front panel .............................................................. 6

Fig. 3: Narcotrend-Compact M, rear panel ............................................................... 7

Fig. 4: Electrode positions for disposable electrodes, 1-channel (PKM1) ............... 14

Fig. 5: Electrode positions for disposable electrodes, 2-channel (PKM4) ............... 14

Fig. 6: Start screen ................................................................................................ 15

Fig. 7: Recording screen ........................................................................................ 17

Fig. 8: Cerebrogram............................................................................................... 20

Fig. 9: Relative Band Activities / Power, 1-channel and 2-channel ......................... 20

Fig. 10: Quantiles, 1-channel and 2-channel ............................................................ 20

Fig. 11: Power Spectrum, 1-channel and 2-channel ................................................ 21

Fig. 12: DSA, 1-channel and 2-channel ................................................................... 21

Fig. 13: Recording screen during the review mode .................................................. 24

Fig. 14: Set and edit markers ................................................................................... 26

Fig. 15: Menu - Options ........................................................................................... 27

Fig. 16: Dialogue „Review“ ...................................................................................... 31

Fig. 17: Screen “View” (review mode) ...................................................................... 33