1. Manuals
  2. Brands
  3. Ecleris Manuals
  4. Medical Equipment
  5. VNG Plus
  6. User manual

Ecleris VNG Plus User Manual

Videonystagmography system
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
VNG Plus
Videonystagmography System
USER´S MANUAL
V.18.11.18ENGLISH

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the VNG Plus and is the answer not in the manual?

Questions and answers

Related Manuals for Ecleris VNG Plus

Summary of Contents for Ecleris VNG Plus

  • Page 1 VNG Plus Videonystagmography System USER´S MANUAL V.18.11.18ENGLISH...
  • Page 2 For more information, accessories, and replacement parts, contact. ECLERIS S.R.L. FRANCISCO N. LAPRIDA 4955.VILLA MARTELLI (B1603ABK) BUENOS AIRES. ARGENTINA Tel/Fax: +54 11 48383200 Web: www.ecleris.com E-Mail: info@ecleris.com...

  • Page 3: Table Of Contents

    RUNNING THE PROGRAM ..............15 HELP ....................16 NEW PATIENT ..................16 NEW SESSION ..................17 CUSTOM PROTOCOL ................19 DIZZINESS HANDICAP INVENTORY ............20 ASSISTANT VNG PLUS ................. 22 POSITION ......................22 GOGGLES ......................23 EYE SELECTION ................... 24...
  • Page 4 CALIBRATION ..................25 STANDARD ......................25 HEAD CALIBRATION .................... 26 Active calibration: AHR ..................27 Passive Calibration: VHIT ..................27 DATA ADQUISITIONS ................29 Registers ......................29 Warnings ......................30 Demonstration ....................31 Performing the test .................... 32 Using the Footswitch ..................32 Spontaneous Nystagmus ..................
  • Page 5 EXPORT TESTS ..................48 SOFTWARE SETUP ................52 LISTS ........................53 MANAGEMENT DATA BASE ................53 PROTOCOL ......................54 DEMOS ........................ 57 ADVANCED ......................57 Warnings ......................58 Visual stimulator ....................58 Print Report ......................60 Grafical scale ....................... 61 Acquisitions ......................
  • Page 6 GOGGLES ......................77 CHANGE THE CUSHION OF GOGGLES ........... 78 FUSES CHANGE ................... 78 DISPOSE ..................... 78 MAINTENANCE AND REPAIRS .............. 79 REPAYMENT AND TRANSPORTATION ..........79 TROUBLESHOTINGS ............... 80 TECHNICALSPECIFICATIONS ............82 APENDIX ..................84 ABNORMALITY THRESHOLD ..............84 Freyss Diagram ...................

  • Page 7: Security Warnings

    SECURITY WARNINGS Before using VNG plus with a patient, familiarize yourself with this user manual, especially with regard to the safety considerations indicated. This manual is only a reference; its purpose is not to replace its protocol for the safe use of...
  • Page 8 To reduce the risk of strangulation, dispose of the cables so that they do not • get tangled To avoid possible injury to the patient due to the use of the device, I • evaluated if the patient is apt to perform nystagmographic tests (See: Consideration of the patient) Only doctors of otolaryngologists, neurologists, balance disorders specialists •...
  • Page 9 If you notice changes in performance or performance, stop using it and • contact ECLERIS technical support.

  • Page 10: Simbols

    SIMBOLS Recognize the following symbols indicate information or security to prevent damage Recognize the following symbols indicate information or security to prevent damage or personal injury (Blue) attached Alternant current ernant current documents Manufacturer Fuse identification Manufactured date Serial number Protect against water ct against water Order number...

  • Page 11: General Information

    VOR and the central vestibular system through oculomotor stimulation. INTENDED USER VNG Plus has been designed to be used by health professionals with experience in the technique. OPERATING PRINCIPE The VNG goggles hold the cameras that are used to record the eye images. The cameras use infrared light (IR), which is not visible to the naked eye.

  • Page 12: Patient Considerations

    Accelerometers to get tilt of patient head: Three Axis Low-g micro machined Accelerometer is used as tilt sensor (measuring gravidity vector projection at each axis and convert it in angles). These sensors are just intended to help trained doctor to positioning patient in right place and with right head angles for each type...
  • Page 13 Medications: Many medications can affect test results. With physician approval, patients should discontinue all medications, unless contraindicated, for 24-72 hours prior to testing. Any medications taken should be clearly noted on the test results. Alcohol ingestion can affect VNG test results for 72 hours post-ingestion; results are unpredictable because alcohol can be an agonist or antagonist.

  • Page 14: Description

    DESCRIPTION The VNG Plus includes the following components and elements needed for installation MainUnit Goggles (withshutter) Powercord Pen Drive Installation User`s Manual ACCESORIES (OPTIONAL) Sensor (gyroscope, accelerometer and ultrasound transmitter) T Bar withreceptorsUltrasound Cushionmask Wirelessfootswitch It is recommended to identify and verify its existence prior to equipment installation.

  • Page 15: Rear Panel

    REAR PANEL Power supply cable connection / Fuse holder Ultrasoundsensors(Bar) VGA (Monitor screen) USB Cable Equipotential terminal JUNTION BOX Right Camera Left Camera Sensor (position, movements) Data wire...

  • Page 16: Goggles

    GOGGLES Sensor (position /movements) Right Camera Left Camera...

  • Page 17: Instructions For Use

    RUNNING THE PROGRAM Run the program from the icon on your desktop PC, or from the Start / All Programs / VNG Plus. The VNG Plus user interface is available in English and Spanish. Language selections by pressing the icon...

  • Page 18: Help

    ENGLISH SPAIN HELP Activate audio help Activate video help (Demonstrations) NEW PATIENT To Create Patient File: enter First name (required), last name (required) and #chart, date of birth (DOB), gender: To enter demographic data (phone, address, etc.) and Anamnesis press the OTHERS button (optional).

  • Page 19: New Session

    START TESTS Upon completion of patient data and the session can begin the study from the Start Session button. VNG Plus will instruct and help step by step in a simple and safe way to perform scheduled tests OPENING AN EXISTING FILE Press Load button and select the patient on the list and open the File.
  • Page 20 Setup: Setup hardware and software. Support: User-friendly assistance for individuals having technical problems with VNG Plus. The technicalsupportteam, is able to troubleshoot most problems that a user experiences. Technical support may be provided, through email, or with remote interface (See: Technical support).

  • Page 21: Custom Protocol

    CUSTOM PROTOCOL Shows sequence of the test to follow. The list includes patientpreparation, calibration and test. All will be included in the protocol you selected. (See: Software Setup Protocol).You can deactivate some items uncheck them. These changes will not be saved See the test description by clicking View Detail test description.

  • Page 22: Dizziness Handicap Inventory

    DIZZINESS HANDICAP INVENTORY The dizziness handicap inventory (DHI) is an optional 25-item questionnaire, which was designed to measure the self-perceived disability or handicap caused by symptoms of dizziness or imbalance. The individual questions are designed to address the impact of the symptoms on the physical, emotional, and functional aspects of daily activities, and there are three possible answers, "Yes,"...
  • Page 23 Go to: Select another Window. Next: Forward to next window...

  • Page 24: Assistant Vng Plus

    (+/- 20º 30º), it should only be changed on purpose. But do not worries about to return the chair to its original position in case it have been moved, VNG Plus is controlling it all the time (See: Alarms). VNG Plus supports screen (monitor) of different geometries, which must be...

  • Page 25: Goggles

    GOGGLES The Video Goggles shall be put in such a way that it fits the patient’s face the best possible. Both elastic strips shall be firmly fixed to the patient’s head. The correct placement of the goggles is of vital importance to perform the tests Nystagmus assessment depends on the quality of the images.

  • Page 26: Eye Selection

    It especially relevant for the settings in the Test, to define which eye's record to analyzing. VNG Plus analyzes only one eye record at a time. The selected eye to analyze default is Left but this may changeat any time.

  • Page 27: Calibration

    CALIBRATION STANDARD This is not a true calibration to determine the amplitude of the eye movements in ne the amplitude of the eye movements in degrees but more an allowance for a correction factor due to the individual anatomical degrees but more an allowance for a correction factor due to the individual anatomical differences of the orbit of the eye.

  • Page 28: Head Calibration

    Checkpoint is it a quickly to the calibration state verification. It is only used after the calibration process. This should only be used after it has been calibrated at least once. The patient should look at the red light (Led) that lights inside the goggles. Verification checks if the mask has been moved, in which case it is necessary to re- calibrate again.

  • Page 29: Active Calibration: Ahr

    Go to: Select another Window Next: Forward to next window Active calibration: AHR The head movements in this calibration are active, where the patient moves his own head. The patient is instructed to keep their eyes on the target shown on the screen and to swing the head gently to the right and left (as if saying with the head "no-no") trying to follow the rhythm of the metronome When all warnings are valid the calibration starts automatically for about 20 seconds...
  • Page 30 metronome, similar way to AHR, while the patient should try to keep the eye on the objective shown on the screen During the head calibration, are shown in the diagrams: the head speed and the eyes position on time Once the calibration is finished, the information corresponding to the head calibration will automatically be generated.

  • Page 31: Data Adquisitions

    DATA ADQUISITIONS Registers Display on real time eyes position (or velocity) graphically, and superimposed to the target line plotted as comparison criteria. The eye position [º] (or speed [º/sec]) is plotted against time, whose description is the following: Horizontal position [º] vs. Time [sec.] In a Cartesian x-t graph. [Green] •...

  • Page 32: Warnings

    Warnings Alarms can be configured with different degrees of stringency (See: Configure / Advanced / Warnings). Relative subject position to the visual stimulator to achieve desired stimulus. Head angles Head tilt: WarningsColors Duringrecording Out of range...

  • Page 33: Demonstration

    Demonstration For each test is available an audio-visual support with a video showing how to conduct the test, and instructions for the user or patient. It also offers recommendations and a list of artifacts that could influence the results. This support can be configured so that it is always available before a test or access itat the discretion of the user and need.

  • Page 34: Performing The Test

    Performing the test On the window there arethetest warnings and also the eyes video display. When thepatient is ready, press Start buttonto recordsthetest. By clicking the Register button data recording starts automatically. All Tests have a configurable time limit, and they will stop automatically. However, you can stop a test manually at any time pressing Stop button.

  • Page 35: Gaze

    Gaze For gaze testing, the patient is instructed to look straight ahead and then to fixate on a target to the right, left, up, and down. Warnings: • Patient position • Head Movements • Head angles Saccades For saccadic testing, one may place dots on the Monitor at specified distances from each other and then instruct the patient to look back and forth between the dots, keeping the head fixed.

  • Page 36: Video Head Impulse Test (Vhit)

    Patient position • Video head impulse test (vHIT) This test records the movements of the eyes and head. The clinician’s hands must be well away from the goggles and the goggle-strap to minimize the chance of any artifact camera movement. The patient should keep staring at target point on the screen , and the clinician gives the patient brief, abrupt, horizontal head rotations through a small angle (about 10-20 degrees) unpredictably turning to the left or right on each trial.

  • Page 37: Dix Hallpike

    Dix Hallpike Dix-Hallpike is performed over a stretcher that allows lying down and sitting the patient quickly. The Dix-Hallpike maneuver is performed by turning a patient’s head to the right or left and then briskly assisting him or her to a supine position with the head hanging to the right or left.
  • Page 38 FIXATION SUPPRESSION After each caloric stimulus, the patient is instructed to fixate on a light Red (inside the goggles). Fixation should normally eliminate or greatly reduce the induced Nystagmus. Warnings: Head Movements • Head position = 30º •...

  • Page 39: Analysis General

    ANALYSIS GENERAL The test will be opened and test data will be displayed in the analysis window. The analysis can be recorded immediately after the test or after performing the scheduled Test Battery. The tests of the same type with multiple sub-tests are shown in one window. The test name displayed should be selected from the drop down menu.
  • Page 40 Use the following tools for: Increase or decrease the scale of plot. Zoom out/Zoom in amplitude Scale Zoom out/ Zoom in Time scale Create print windows: cropping a records area to print. (See: Createprintwindow) Edit Nystagmus manually. When reviewing an editable test, you can click on edit Icon to open the Edit mode and display the Edit toolbar.

  • Page 41: Spontaneous Nystagmus

    The software displays all test information in a single display screen. This allows the user to simultaneously view the data collection along the analysis displays. In each measurement diagram, you can maximize and minimize the display of the measured data by using the zoom option Toolbarbottom: Back: Returnpreviouswindow Play: Replay the test performed (record, warnings and videos)

  • Page 42: Smooth Pursuit

    movement should be equal in amplitude to the distance between the former object of interest and the new target. Smooth pursuit The smooth pursuit system is responsible for following targets within the visual field. Care should be taken in interpreting smooth pursuit test results in geriatric and pediatric patients.

  • Page 43: Video Head Impulse Test (Vhit)

    Video head impulse test (VHIT) The video head impulse test is useful in the assessment of vestibular disorders. The test offers a clinical indicator of a semicircular canal deficit. Velocity Leftward/Rightward: head velocity stimuli and eye velocity responses • Superimposed and displayed. •...

  • Page 44: Supine

    Supine These are VNG test to diagnose BPPV and other vestibular complaints. Parameters are calculatedfor horizontal channelall positions Nystagmus Count • Latency (sec) is calculated from the difference in time between head • displacement and the onset the first Nystagmus SPV (º/sec) is average slow phase velocity •...
  • Page 45 RightEar=RE44+RE30 LeftEar=LE44+LE30 Where SPV| represents the average slow-phase Nystagmus eye velocity that after_fix occurs for 5 second after the eyes are fixated and SPV| represent the before_fix average slow-phase Nystagmus eyes velocity that occurs for 5 seconds before eyes are fixated on the light point. FI (Fixationindex) =SPV| afterfix SPV|...

  • Page 46: Report

    REPORT The report manages the printing functions of VNG Plus. Prints different configurations and analysis of records obtained as well as use a wide variety of printers. Records and analysis on each test will be displayed in the preview. At the bottom show the current page/Totalpages Number.

  • Page 47: Edit Analysis

    Logo: Insert a picture (.bmp/jpg) on to the report header TOOLBAR Page: Printcurrent page. All: Printallpages. Back: quitthereportwindow EDIT ANALYSIS Nystagmus beat TheNystagmus analysis constitutes major part Plus system. Thealgorithmaccuracydependsonseveralfactors: The image quality of the eye. An accurate eye detection procedure (training during the mask setup) The patient cooperation (blink, keeping eyes open, wearing no eye makeup, etc.) Thecalibrationprocess.
  • Page 48 Even so VNG Plus offers a function, to allows you to overrule (partial or total) the automatic analysis performed by the software algorithm. With the possibility of adding or deleting Nystagmus marks you should optimize the results of the analysis by exerting your professional training and experience.

  • Page 49: Cefalic Impulse Count (Vhit)

    Cefalic impulse count (VHIT) The analysis is done by separating impulses to Rightward and Leftward from the top pull-down menu. For each impulse, the response of the eye in speed and acceleration (green) is plotted next to the cephalic impulse (red) and the relevant parameters of the same as gain, maximum speed of eye and head, duration, etc.

  • Page 50: Export Tests

    NOTE. The manual edition is reversible EXPORT TESTS In the home window you can access the test summary recorded and export Select the test to be exported by clicking on it, and the check box of the selected test will be activated Pressing the Export testbutton opens a dialog to export the selected test in some external medium (Pendrive, CD, etc.) Pressing Publish Test, you can publish the test (data, report or videos on the website...
  • Page 51 First you need register Complete all the required fields to create an account. Select the publication type you want to make Public: anyone who visits EndodigiWeb. Private: only people that you invite by email In both cases PUBLIC or PRIVATE, you must provide a title and a brief summary (optional)
  • Page 52 Make sure not to publish patient’s personal and confidential information Invite your contacts to visit the publication. Adding contacts from your address book Add: open a dialog to create a contact list to share your publications...
  • Page 53 ENDODIGI CONTACTS New: Add a new contact email Import: This enables you to import your address book from mail clients to ENDODIGI. Now your publication is ready to upload on the website! If your publication was uploaded successfully, you'll see an “Upload succeeded " message.

  • Page 54: Software Setup

    Please note if you attaching many files large, it may result in a long upload times Visit the Endodigi website at http://www.endodigi.com to view your publication SOFTWARE SETUP The following section describe all of these options and parameters configurable by user...

  • Page 55: Lists

    LISTS Edit the list to be available in patient records: Doctor, Administrators and Clinics. Hereyou can addorremoveitems MANAGEMENT DATA BASE The database shows a list of stored sessions. You can sort in ascending / descending order by date or alphabetical items: Last Name, Name or Chart # (Medical Records), pressing the top of each column.

  • Page 56: Protocol

    PROTOCOL Here you can create custom protocols and adapt it to your needs and experience in clinical practice. VNG Plus includes default protocols that fit the characteristics of hardware detected.
  • Page 57 Details:Show the test description: Time, frequency, direction, etc The protocol Tree is similar to the one in Windows Explorer and can consist of up to two levels. First Level: Displays screen/Test Second level: Displays description (paradigm, Velocity frequency, Etc) for performed tests To expand / collapse the description use +/- All tests are saved.
  • Page 58 Enabled/Desabled New: To create a new protocol (test sequence), Identify the protocol with a NAME. Identify the test with an (optional) personal name Select the test from the available options by type / subtype Nystagmus: Spontaneous Visual Stimulation: Gaze, OKN, Saccades, Smooth pursuit Posture: Dix-Hallpike, Supine Caloric: Cool;...

  • Page 59: Demos

    DEMOS You can see a Test instructions, recommendation and artifact (most probable mistakes), and video test demonstration for each test (ex: Dix Hallpike video demonstration is shown on figure). If you want to see it, before start the test recording, you must activate Test instruction on the Advanced / Acquisitions tab ADVANCED Different variables grouped by their characteristics are presented to...

  • Page 60: Warnings

    Save and Exit: Store all new parameters and coming back to previous window Warnings Select the warning control: Soft /Normal/ Hard Depending on the selected warnings level will be more or less stringent (demanding) perform a test Visual stimulator VGA:To produce stimulation patterns of correct size, position and angle velocity, the required information about the geometry of the screen setup in your laboratory.
  • Page 61 Fill out the actual lengths in the fields that describe the Monitor dimensional characteristics (See also Technical Requirements and Setup/ Advanced /Acquisition).

  • Page 62: Print Report

    Print Report Check / uncheck the items you want to print. You may change these options on report print settings by sessions Options for Tests: These items are applied for all selected tests Auto adjusts: Prints entire record based on the time recorded Graphics: graphicalanalysis Analytics Analysis: To print the measure data of a test Records: eye positionplot...

  • Page 63: Grafical Scale

    Tests: Select the test to print Spontaneous Gaze Saccades Smooth pursuit Dix-Hallpike Supine Calorics VHIT DHI: dizziness Handicap inventory score Medical release CPT: Current Procedural Terminology codes are numbers assigned to every task and service a medical practitioner may provide to a patient on USA. They are then used to determine the amount of reimbursement that a practitioner will receive.

  • Page 64: Acquisitions

    The offset- time area relative to the whole area allocated for the chart is defined here and the scrollbar may be used to change the chart view. Not so in the printing, will only print the defined time window. For example: Test recorded: 60 sec Time plot: 25 sec. Part of the record does not appear at the viewing, so you must use the scroll bar to scroll the entire layout.

  • Page 65: Analysis

    Alert Message: Disable warning’s control messages Test Instruction: Before start the test, is opening a windows, to show how to administer the test. There are also recommendations and descriptions of the most common mistakes to affect the recording and a video demo too (See Demo) Audio Instructions: Enables the user-mode audio reading Turn on the wireless pedal.

  • Page 66: Pupils

    Pupils The user rarely has to access this configuration tab. This requires technical information that is specific to its installation. Request technical support before modifying any parameter, since it could affect the operation of the VNG Plus...

  • Page 67: Reprocess

    Reprocess It allows modifying the eye detection area in tests already registered to improve the analysis. The modifications are over the video itself and it does not affect the general mask parameters. You can modify the area from the default configuration drop-down menu or by reducing / enlarging the central area.

  • Page 68: Technical Support

    TECHNICAL SUPPORT To request technical assistance, click on Support button in home window. Remote Support, access the following screen. Include your inquiry or problem description in the field below. If this is a support request, please include a full description of the problem, including the error message. TECHNICAL SUPPORT TYPE Email Support: the field required must be completed and is send the query.

  • Page 69: Remote Connection

    It’s possible that technical support is not available at the moment of realize the query. If so, you be informed how time the service will be available,to decide wait.See: Technical support is not available. REMOTE CONNECTION After that technical support receive the application to Remote Access and until in fact is established or canceled the connection you will see the following screen.

  • Page 70: Installation

    Windows Media encoder distribution version Microsoft Framework 3.5 SOFTWARE INSTALATION With the device disconnected plug in ECLERIS installation Pen drive in a free USB port. If it does not executes automatically after a few seconds. You must be run installation manually, executing USB Drive\Setup.exe...
  • Page 71 Next to start installation process. It is recommended to follow the options that appear by default, by pressing Next button in each of the screens, unless indicated otherwise. Once the files are copied, the installation program will automatically begin drivers’ installation.
  • Page 72 You might be asked to restart your PC, you must choose in all cases “No, Restart later", until installation is finished completely. Press Install to continue If consulted, keep the defaults and click Next. If at this point is consulted on restarting the computer answer: No, Restart later.

  • Page 73: Automatic Drivers Installation

    Windows request you, in order to correctly install the device. every time Windows request you, in order to correctly install the device. When connecting the VNG Plus to the USB port automatically begin the drivers When connecting the VNG Plus to the USB port automatically begin the drivers loading.

  • Page 74: Checking Drivers Installation (Windows 7)

    You can check the correct driver installation from the Device Manager. It´s accessed over: Start/Control Panel/ System and Maintenance/ Device Manager. 1. USB 2862 Device means the VNG Plus Video device was installed. 2. Communications Port means the VNG Plus Data device was installed.

  • Page 75: Hardware Installation

    HARDWARE INSTALLATION Unpack the device very carefully and place it on a flat and firm surface, before proceeding to connect the accessories The software must be correctly installed before to install the hardware ASSEMBLY OF THE RECEIVER BAR WARNINGS: Make sure you have a Phillips screwdriver for the screws before mounting. Confirm that the VESA mount of the monitor is suitable for installation (75mmx75mm or 100mm x100mm) Prepare at least four 8 mm diameter screws (not supplied).

  • Page 76: Conections

    Figure 1: Assembling Parts. Figure2: Mount over monitor (a)(b) Figure 3: Correct installation. (b) CONECTIONS Put the position sensor into the center of the mask by pressing. Connect the cameras (Right (1) / Left (2)) to the junction box. Connect the position sensor to the central connector (3) of the junction box. Connect the junction box to the data input in the console (Data source)
  • Page 77 Connect the ultrasound bar to the connector on the rear pan Connect the ultrasound bar to the connector on the rear panel of the console Connect the visual stimulus monitor to the VGA on the back panel of the Connect the visual stimulus monitor to the VGA on the back panel of the console.

  • Page 78: Workstation Layout

    Plasma). El paciente debe estar centrado al monitor para lograr el estímulo adecuado en amplitud VNG Plus admite dispositivos (TV, LCD, LED) de distintas configuraciones para generar la estimulación visual. (Ver Configuración/ Avanzados/Estimulador) El estimulador visual se utiliza en las siguientes pruebas: Gaze •...

  • Page 79: Care And Manteinance

    CARE AND MANTEINANCE WARNING: To reduce the risk of electric shock, turn off and disconnect the equipment from the power supply before cleaning or repairing it. NOTE: It is the responsibility of the user to comply with the information provided in this section The procedures detailed below must be performed by the operator.

  • Page 80: Change The Cushion Of Goggles

    CHANGE THE CUSHION OF GOGGLES Peel off the pad and wipe the surface well with a soft cloth lightly moistened with alcohol. Remove the protective paper from the new pad and press the self-adhesive side onto the mask. Do not stretch the pad. FUSES CHANGE Replace the fuses as detailed below: Under the connector for the power cable is a small box where the fuses are...

  • Page 81: Maintenance And Repairs

    MAINTENANCE AND REPAIRS VNGPLUS must be repaired and / or maintained exclusively by qualified technical personnel authorized by ECLERIS and only those parts of the equipment that are designated by ECLERIS as repairable must be repaired. To perform any other procedure that is not detailed in this section, contact the Ecleris technical support.

  • Page 82: Troubleshotings

    You must connect it to a assistance connected to a USBport onboard port display on board (mother). Wired ports do not guarantee the proper functioning of VNG Plus. There aren't The cameras are not Check proper image of (the) properly connected...
  • Page 83 USB port of the PC. Function wireless switch Select the wireless switch is not activated. into Setup/ Advanced Acquisition If you cannot solve the problem, contact your local ECLERIS office or distributor and request technical services.

  • Page 84: Technicalspecifications

    TECHNICALSPECIFICATIONS Goggles: Weight: 330gr (without occlusion) 375gr (with occlusion) 435gr (with position sensor) Dimensions (LxHxW): 27x14x10 cm Console: Weight:4kg Dimensions:(LxHxW):26.05 x10 x 30 cm Power Voltage input: 100-240V, 50-60hz Consume: 40VA Fuse: 2x T1AL250V Electrical security: Class IEC60601-1: Electrical Protection: Class I, Type: BF PROTECTIVE LEVEL AGAINST WATER ENTRANCE: IPX0 NOT suitable for use in the presence of a flammable anesthetic mixture with air, oxygen or nitrous oxide...
  • Page 85 System capabilities Input: 1/ 2 Eyes. 2/ 4 channels (real time) Sampling: 60hz Tracked range: ±30 horizontal ± 20 vertical Software Features: : Patient database. Test storage and Analysis of main parameters corresponding to each test. Lighting conditions to perform the test: complete darkness Test 1.

  • Page 86: Apendix

    APENDIX ABNORMALITY THRESHOLD TEST ABNORMALITY SIGNIFICANCE SPONTANEOUS 2 Beats (horizontal) in 5 CNS: Nystagmus in all Nystagmus: slow sec. with average velocity gaze directions component, followed by of >6 deg/sec. direction changing fast component. Nystagmus in same gaze direction. Bilateral gaze SPONTANEOUS Nystagmus: eyes open...
  • Page 87 SACCADE Latency: Significant saccadic slowing, overshooting Velocity: peak Age 50 and under : >260 or undershooting: CNS velocity msec lesion ocular disorder Lower velocity Latency: reaction time in Age 60- 69: >270 msec of trailing eye: Age 70- 79: >280 msec msec.
  • Page 88 CALORIC TEST Unilateral weakness: of Caloric weakness: is a more than function Directional abnormal. Bilateral labyrinth or VIII cranial Preponderance: weakness: nerve (vestibular Nystagmus beats velocities portion). stronger one way than irrigations another. Unilateral: indicates <20 º/sec disabled side. Fixation Index: when Nystagmus...

  • Page 89: Freyss Diagram

    Freyss Diagram It was designed to perform the bilateral bi-thermal caloric test. Freyss butterfly or diagram shows the Nystagmus intensity together with the results of absolute symmetry and preponderance. In its most traditional form, Freyss butterfly represents the number of nystagmic flaps observed in a 30-second period.
  • Page 90 The diagonal intersection coordinates represent the unilateral weakness calculated using Jongkee’s formula. The absolute directional preponderance is not shown as a percentage but as an absolute value, in degrees per second. This format offers different advantages as the ability to compare the preponderance speed against the speed of any Nystagmus that may be present.

  • Page 91: Dizzinesshandicapinventory

    DizzinessHandicapInventory Sometimes Does looking up increase your problem? Because of your dizziness do you feel frustrated? Because of your dizziness do you restrict your travel for business or recreation Does walking down the aisle of a supermarket increase your dizziness? Because of your dizziness do you have difficulty getting into or out bed? Does your dizziness significantly restrict your...
  • Page 92 Do quick movements of your head increase your P11. dizziness F12. Because of your dizziness, do you avoid heights? P13. .Does turning over in bed increases your dizziness? Because of your dizziness is it difficult for you to do E14. strenuous housework or yard work?? Because of your dizziness are you afraid people E15.
  • Page 93 Does your dizziness interfere with your job or F24. household responsibilities? P25. Does bending over increase your dizziness Score: Functional = ..Total= Emotional= Physical=...

  • Page 94: Electromagnectic Compatibility

    ELECTROMAGNECTIC COMPATIBILITY Guidance and manufacturer's declaration -Electromagnetic emissions The device is indicated for use in the electromagnetic environment specified below. The client or user of the equipment must ensure that it is used in said environment. Electromagnetic Emissions Test Accomplishments environment-Guide Radio energy is used only for its internal functioning.
  • Page 95 Guidance and manufacturer's declaration - Electromagnetic immunity The VNGPlus unit is intended for use in the electromagnetic environment specified below. The customer or user of the unit must ensure that it is used in this environment Test Test level Level Electromagnetic Immunity IEC 60601...
  • Page 96 IEC 61000-4-8 a typical location in a typical commercial hospital environment. NOTE: UT is the voltage of the AC network before the application of the test level. Guidance and Manufacturer's Declaration - Electromagnetic Immunity The VNGPlus unit is intended for use in the electromagnetic environment specified below.
  • Page 97 VNGPlus unit. b.- In the frequency range from 150 kHz to 80 MHz, the field strengths must be less than 3 V / m. ECLERIS S.R.L. FRANCISCO N. LAPRIDA 4955 - VILLA MARTELLI...
  • Page 98 (B1603ABK) BUENOS AIRES - ARGENTINA Tel/Fax: +54 11 48383200 Web: www.ecleris.com E-Mail: info@ecleris.com All rights reserved. Reproduction or transmission in whole or in part, in any form or by any means, electronic, mechanical or otherwise, is prohibited without the prior written...

Table of Contents