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Vestibular Devices
eVNG USB Device for Video Nystagmography
Easy-to-Use Routine Examination with the eVNGUSB Eye Movement Imaging System
- Adjust image sharpness
- Fully automated test sequences
- Dual Lens Steady Video Glasses with Face Cover
- Three-step adjustable heat reflective mirrors
- Print detailed results
- Soft cushion to provide a perfect and comfortable fit
- Foot switch
- No other computers needed
Realistic 3D Calibration System Requirements for the eHITUSB Device
- Intel Core i5 processor minimum
- Screen resolution 1920 x 1080 pixels (Full HD)
- Windows 10 operating system.
Thanks to our new innovative sensor technology, we now offer you easy and realistic calibration!
- Easy, fast and reliable!
- New Opportunities in Training, Measurement, and Diagnostics!
- Displays head movement in all axes with high precision.
eDVAUSB Dynamic Visual Acuity During the VOR Test: Dynamic visual acuity (DVA) describes the stability of visual images in which the vestibulo-ocular reflex (VOR) counteracts head movement by moving the eyes in the opposite direction to maintain a clear view of the world. The eDVAUSB test provides static and dynamic visual information in healthy people such as pilots and athletes, as well as in patients with vestibular or neurological disorders. Simpler versions of this test involve reading the vision board while the patient shakes his head. If the patient has to move his head two lines up on the vision board to see the letters
eHITUSB Video – Head Impulse Test: The eHITUSB Head Impulse Test was developed to quantitatively analyze the six semicircular canals. The tested channel is always in the direction of the pulse. This means that when the head is turned to the right, the right channel is activated and vice versa. This also applies to the vertical semicircular canals. The test uses the vertical planes of the anterior and posterior canals, which are located at approximately a 45 degree angle to the sagittal plane. Now with the SHIMP test, horizontal level, head movement, semicircular canal, anterior left, posterior right…
The First Method: This method starts from the center and moves randomly to the left or right. After the stimulus, the head is slowly returned to the starting position. Advantage: The patient does not know the direction of the stimulus.
The Second Method: The head is slowly moved to the left or right and then returned to the central position. Advantage: This method is easier for beginners, as it allows greater control over the stimulus (especially the angles).
Results are displayed in real time. The normal response to the stimulus is exactly opposite to the head movement, with smooth eye motion. The gain ratio is calculated for each trial. The gain between head and eye movement should be close to 1. If there is an issue with a semicircular canal, the patient loses the target, and compensatory corrective saccades occur. If the gain falls within the gray zone, a disorder may be present. If only one side is affected, two separate dotted clouds appear. In addition to displaying gain and movement, the eHITUSB software provides a 3D representation.
VNG / vHIT– COMBI Mask
VNG/vHIT–COMBI mask for all measurements and add-ons. The built-in video mask can be used for examinations in the dark or with visual stimulation. The video image is focusable and can be individually adjusted horizontally and vertically. The soft cushion ensures a comfortable, light-blocking fit to the face. The eVNG / eHIT mask is equipped with 9-axis sensor fusion technology. Record both eyes with two cameras. Power is supplied via USB port. A foot switch option is available for optimal hands-free use. With the additional mascara option, patients wearing eye makeup can be examined without removing the mask.
KALORI Star Air Caloric Device with Active Cooling Technology
The Calorstar Arctic is a powerful pneumatic thermal irrigation device used to stimulate the vestibular system. Thanks to its innovative design, it ensures continuous cooling. So, it is not only useful in daily practice but also used in clinical research. The default temperatures for aerobic irrigation are 47°C (for warm stimulation) and 27°C (for cold stimulation). You can change these values from 20°C to 50°C.
Testing with the KALORIstar device is part of the eVNGUSB program, which uses the eVNG mask. The stimulus is operated via the handle. You can adjust the temperature, duration, and type of stimulus from the control panel, with values displayed on the screen.
Caloric irrigation is a standard vestibular test used to study low-frequency responses. Spontaneous nystagmus can also be recorded prior to testing and included in the calculations. The user interface features a clear layout and displays eye movements for all irrigation procedures. In addition, you receive the computed results…
The New KALORIstarCT Air Caloric Device with Active Cooling Technology
The KALORIstarCT is an evolution of the reliable KALORIstar Arctic air caloric device and is the first air caloric system equipped with Active Cooling Technology (ACT). We built upon the robust technology of the KALORIstar Arctic and enhanced it with a refined design. The innovative circular connector with push-pull mechanism complements the high-quality design, while the smart handle allows replacement of the handle only when maintenance is needed. Last but not least, it sets a new standard for quiet operation. It is easy to use and comfortable for the patient.
- Temperature: 20…51 °C
- Enhanced Active Cooling (ACT)
- Air Flow: 8 L/min
- Ultra-Fast Adjustment
- On-Device Handle Holder
- Smart Handle for Easy Maintenance
Manual Pendulum Test (MPT)
Integrated as an option in the eVNGUSB software, the Manual Pendulum Test (MPT) is used to assess compensation following balance loss. After practical calibration, the software guides the examiner with audio cues and 3D animations throughout the test. This test can be performed using a standard office chair.
Thanks to fruitful collaboration, the test is now compatible with the SIT 4 examination chair from OTOPRONT, Germany. The SIT 4 chair can perform standard tests (5, 10, and 20 seconds / 45°, 90°, 180°), which are recorded by the eVNGUSB system.
Rotary Chair
The Rotary Chair Test is a mid-frequency test used to diagnose balance disorders. The VESTAR 100 USB rotary chair can be integrated with the eVNGUSB system. There are two methods:
1– Step/Stop Rotation Test
The chair is gradually accelerated until it reaches a constant speed. After the stimulus ends, the chair stops abruptly. Analyses are separated into the initial rotation phase and the post-rotation phase.
2– Pendulum Test
The chair moves in a pendular rotation. Speed is measured in degrees per second, up to a maximum of 200°/s. The user interface displays graphs of the recorded eye movements. Identified nystagmus beats are highlighted and plotted. Eye movement graphs are color-coded: the right eye is shown in a black graph (with red nystagmus), and the left eye in a green graph (with blue nystagmus).
eVEMP USB
Vestibular-Evoked Myogenic Potentials (c - and oVEMP)
The eVEMPUSB device, part of the eABRUSB system, is designed to examine the vestibular end organ, which consists of the saccule and utricle. These receptors are sensitive to gravity and linear acceleration. The saccule responds to vertical motion, such as lifting, while the utricle responds to horizontal motion. The saccule can be assessed by recording cervical vestibular-evoked myogenic potentials (cVEMPs), and the utricle by recording ocular vestibular-evoked myogenic potentials (oVEMPs). The stimulus can be either an acoustic tone burst or a click sound (CW–VEMP–Chirp).
During the test, the patient sits or lies down. Adhesive electrodes are placed at the designated locations. Electromyography(EMG) is recorded and averaged.
Indications for use include, for example, peripheral vestibular hypofunction, benign paroxysmal positional vertigo (BPPV), and Ménière’s disease.
A unique feature of the eVEMPUSB device is Multi-Frequency Analysis (MFA) technology, where the tone is presented at alternating frequencies (500, 750, and 1000 Hz). In cases of Ménière’s disease, the frequency of the maximal response shifts to a higher frequency (1 kHz).
Devices
Results are clearly displayed, with SW markers indicating signals detected automatically. Standard gray-background ranges facilitate analysis. You can view four graphs showing the recorded measurements (cVEMPs right/left, oVEMPs right/left). The function of the vestibular otoliths is examined with 100% precision. When VEMPs are recorded (the graphs), the saccule and auditory canal function is fully intact. Stimulation is provided via DD45 headphones (shielded) or IP30 earphones. Color-coded electrode cables with wet electrodes are used to record electromyography (EMG) signals.
