Product Candidacy for the Sophono® Alpha 2 MPO Magnetic Bone Anchored Hearing System (BAHS)

The Sophono mMagnetic Bone Anchored Hearing System (BAHS) Candidacy Chartagnetic bone conduction hearing system from Medtronic is suitable for patients with conductive hearing loss, mixed hearing loss, and single-sided deafness. The bone anchored hearing system (BAHS) is comprised of the titanium encased magnetic implant1, the Attract® magnetic spacer, and the Alpha 2 MPO sound processor. The magnetic implant is the smallest on the market and lies completely under the skin.1,2 It is surgically placed and is indicated for patients 5 years and older. Sophono currently boasts the lowest profile implant on the market and is a safe alternative to more intrusive implants.3 Pediatric patients (≤ 5 years old) and those not wanting to undergo surgery can still experience improved hearing by wearing the Alpha 2 MPO sound processor on a softband or headband.

The Alpha 2 MPO magnetic bone conduction hearing device is indicated for use among those with a conductive or mixed hearing loss where the bone conduction thresholds are ≤ 45 dB; ideal candidates will have bone conduction thresholds of ≤ 35 dB for the indicated ear.2 Patients with bone conduction thresholds greater than 35 dB should be carefully evaluated for the Sophono system.

For patients with single-sided deafness (SSD) the better hearing ear should have normal hearing (thresholds ≤ 20 dB). Sound is received by the Alpha 2 MPO sound processor worn on the poorer hearing side and is then transferred to the better functioning cochlea. This configuration reduces the head shadow effect.


  • Conductive hearing loss
  • Mixed hearing loss
  • Single-sided deafness
  • Age 5 to adult (implanted); all ages (headband/softband)
  • ≤ 45 dB bone conduction thresholds for indicated ear
  • ≤ 20 dB bone conduction thresholds in the better hearing ear (SSD)


Meet with a clinical representative who will demonstrate the Sophono® system.




  1. Siegert R., M.D., Semi-implantable transcutaneous bone conduction hearing device with fitting on the day of surgery. Presented at the 29th Politzer Society Meeting, Antalya, Turkey, Nov 2013.
  2. Centric A and Chennupati, SK, Abutment-free bone-anchored hearing devices in children: Initial results and experience - International Journal of Pediatric Otolaryngology 2014.
  3. Siegert R and Kanderske J. A New Semi-Implantable Transcutaneous Bone Conduction Device: Clinical, Surgical, and Audiologic Outcomes in Patients with Congenital Ear Canal Atresia. Otology & Neurotology 2013, 34:927-934.