The first-of-its-kind, the HiRes Ultra 3D Cochlear Implant’s innovative multi-magnet assembly provides alignment to the 3D MRI field, allowing adult and pediatric users to safely undergo high-resolution imaging, such as 3.0 Tesla MRIs, without any preparation, surgery or head bandaging.
This unique multi-magnet assembly is composed of four rotatable magnets encased in a revolving disc allowing the multi-magnet assembly to provide alignment with the 3D MRI field. There is no need for head bandaging or possible surgical removal of the multi-magnet assembly. And there is no need for restriction of head orientation at any time when in an MRI field.
Thanks to the multi-magnet assembly’s ability to provide alignment to the magnetic field, the torque generated is so low that it translates to pressure values below the pain or discomfort thresholds for adults and pediatric recipients.1,2,3,4 The multi-magnet assembly in the HiRes Ultra 3D cochlear implant, when compared to the standard Ultra magnet, has similar artifact.5
For your patients, this means uninterrupted hearing. When getting an MRI, all they have to do is take off their processor and headpiece prior to the MRI. And when the scan is done, put them back on to continue hearing.
The multi-magnet assembly in the HiRes Ultra 3D cochlear implant was tested to remain functional for life. In bench tests, the multi-magnet assembly keeps going without any risk of demagnetization or damage even after 200 3T MRI routines.6
Grossi, DB, et al. Pressure pain threshold in the craniocervical muscles of women with episodic and chronic migraine, Arq Neuropsiquiatr. 69(4):607-12, Aug 2011
Antonaci, F, et al. Pressure Algometry in Healthy Subjects: Inter-Examiner Variability. Scandinavian Journal of Rehabilitation Medicine, 30, 1998
Antonaci, F, et al. Pain threshold in humans. A study with the pressure algometer. Functional Neurology, 7(4) 1992
Ferracini, GN. A Comparison Pressure Pain Threshold in Pericranial and Extracephalic Regions in Children with Migraine. Pain Medicine, 15, 2014
Cambridge Study: Ci2018 Antwerp
Magnet testing data on file.