The major clinical advantage of computerized rotational testing is the ability to produce angular accelerations that can be precisely controlled and repeated. Multiple stimuli of varying intensities can be applied to the vestibular system within a relatively shorttime. These tests allow evaluation of the vestibulo-ocular reflex and the optokinetic neural pathways in a manner that is not duplicated by alternative procedures.
To perform a VOR test, the movement of the chair must be as smooth as possible and without drift to avoid a directional preponderance. The GigaTorque (and all rotary chairs manufactured by Difra) are positionally controlled. So there is no drift in the movement, no vibration. The movement is also not disturbed by patient's movement on the chair.
The automatic Micro-centifugal system has the ability to precisely position patient’s right or left otolith organs over the axis of rotation. The seat is moved off axis by computer control even when rotating at 400 degrees per second. When rotating off yaw axis, centripetal acceleration stimulates the otolith organs resulting in a perception of tilt by subject.
The patient reaction is recorded by our VNG NysStar with the eye torsion detection.
120 Nm Direct drive motor. To avoid vibration in the movement there is no belting, no gearbox
Maximum programmable speed (450 degree/sec) and acceleration (240 degree/sec2)
Comfortable, adjustable chair can be tilted to 30 degree for caloric testing or reclined to the horizontal position for positional or positioning test
Low-noise slip rings permit the recording of ENG by means of electrodes and VNG using our video goggles. Up to 36 Slip rings
Fully controlled by our software DiSoft
All parameters are user programable : frequency, maximum speed, amplitude, etc ...
Connection to the computer by NAC bus (High Speed and Secure Serial Bus)
Up to 255 differents devices can be connected on this NAC Bus
Maintenance free motor
Delivered with a beautifull desk
3 phase power supply
With our Disoft software,differents types of movement can be performed :
Visual vestibulo-ocular reflex tests
Sinusoidal Pendular test
Velocity Step Rotational test
Sinusoidal Harmonic Acceleration Test (SHAT)
Different positions can be programmed (For caloric testing for example)
Automatic minicentrifugal rotary chair
Sonic Innovations Equipment | Hearing Aids & ENT Diagnostic Devices
Sonic Innovations Equipment is a global provider of superior hearing solutions.Our extensive and exclusive portfolio of the world’s leading audiological brands is what makes us stand out from the rest. ...