Hearing rehabilitation using the cochlear implant in the inner ear is a highly specialized microsurgery that requires the highest level of surgical experience. In practice, however, it has become apparent that especially smaller clinics with fewer case numbers and therefore lack of surgical experience have difficulties meeting the requirements of a high quality of care. Therefore, the Department of Otorhinolaryngology at Hannover Medical School (MHH) is developing a minimally invasive, patient-specific and cost-effective concept: GluingJig. Since the surgeon must drill a thin channel into the bone to the middle ear cavity for implantation and must not hurt sensitive nerves, the experts at the MHH develop an easy-to-produce surgical template, imaging (DVT) and especially developed planning software provide an optimized drilling channel and allow no deviation. In this way, the surgeon can safely reach the inner ear and insert the electrode of the cochlear implant.