About this trial
This study will look at how much sound amplification (gain) different bone-anchored hearing devices can provide. The goal is to understand if there are differences between devices and whether these differences affect how well the devices meet the hearing needs of users.
Bone-anchored hearing systems send sound vibrations directly to the inner ear through a small implant in the skull. The amount of amplification a device can provide is important for people with hearing loss. However, the actual maximum amplification available to a user depends on feedback control during fitting and can vary between devices and individuals.
In this study, the actual maximum amplification of Device A and Device B will be compared. In addition the actual maximum amplification of Device A will be compared to Device C as well as the Device B compared to Device C. It will also be investigated whether the amplification limits the prescribed settings for the users.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
BAHS user with an Oticon Medical compatible abutment
Signed Informed Consent Form
Adult, 18 years or older
MHL with pure tone average (PTA) bone conduction (BC) threshold (measured at 0.5, 1, 2 and 3 kHz) of 25-65dB HL on the indicated ear
Disqualifiers
Participation in another clinical investigation which might cause interference with study participation.
Subjects who do not have the ability or are unwilling to follow investigational procedures/requirements, e.g. to complete questionnaires, according to investigator's discretion.
Trial design
Sequential
Treatments tested in this trial
Bone Anchored Device A
DeviceFitting Device A
Bone Anchored Device B
DeviceFitting Device B
Bone Anchored Device C
DeviceFitting Device C
Treatment groups
Trial outcomes
Primary outcomes
Difference in actual maximum gain in dB, between Device A compared to Device B for the mean average of the frequencies 500, 1000, 2000, 3000 and 4000
Secondary outcomes
Difference in actual maximum gain in dB, between Device A compared to Device B for the for the mean average of the frequencies 500, 1000, 2000 and 4000
Difference in actual maximum gain in dB, between Device A compared to Device B across frequencies 250, 500, 750, 1000, 1500, 2000, 3000, 4000, 6000 and 8000 kHz
Difference in actual maximum gain in dB, between Device C compared to Device B for the mean average of the frequencies 500, 1000, 2000, 3000 and 4000
Difference in actual maximum gain in dB, between Device C compared to Device B for the mean average of the frequencies 500, 1000, 2000 and 4000
Sponsors and contacts
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Oticon Medical
Lead sponsor
Göteborg University
Collaborator