3. What is the Baha ® system? The BAHA system has been a well recognized hearing treatment for conductive and mixed hearing losses since 1977 (Collaborative effort between Nobelpharma, University of Gothenborg, and Chalmer’s University) The BAHA system is an implanted direct bone conduction hearing rehabilitation system (osseointegration) Sound is conducted through the skull bone bypassing the middle ear and stimulates the cochlea The BAHA system produces natural sound through direct bone conduction The BAHA system is composed of three parts: a titanium implant, an external abutment and a sound processor

4. The Baha ® System

5. Osseointegration

6. FDA Clearances (1996 – 2002) 1996 –the BAHA system was cleared to treat mixed and conductive hearing loss. 1999 –the BAHA system was cleared for pediatric use in children age five and older. 2001 –the BAHA system was cleared for bilateral fittings. 2002 –the BAHA system was cleared for use in patients with unilateral sensorineural hearing loss also known as Single Sided Deafness (SSD).

7. Types of Hearing Loss the Baha ® System Can Help Mixed and Conductive hearing loss – unilateral or bilateral fitting –Due to examples such as: Chronic otitis media Congenital atresia/Microtia Cholesteatoma Middle ear dysfunction/disease

8. Direct bone conduction Summary: Works independently of ear canal and middle ear Direct transmission gives clear sound Preoperative testing possible High wearing comfort Safe and simple surgery

9. How does the Baha ® system work for Mixed and Conductive Hearing Loss?

10. Advantages of the Baha ® System in comparison to other alternatives Mixed and Conductive Hearing Loss No occlusion of the ear canal No feedback problems Sound bypasses the middle ear Predictable results Low risk for the patient Reversible surgery More comfortable Better sound quality Aesthetic appearance Over air conduction devices Over reconstructive surgery Over bone conduction devices

11. Pre-operative test equipment

12. Baha ® ClassicCompact

13. Baha ® Compact 1.Volume control, on/off 2.Electrical input 3.Battery compartment 4.Battery door 5.Microphone 6.Abutment snap 7.Attachment for safety line 8.Gain control 9.Tone control 10.Serial number

14. Baha ® Cordelle II

16. The Snap Coupling

19. Personal Hygiene Simply clean skin around the abutment with a soft cleaning brush and gentle soap. This type of cleaning should take place at minimum 1 time daily after the area is healed from surgery.

20. Baha ® Enhancements –Audio Adapter –Telecoil –Softband –Directional Microphone

21. Audio Adapter

22. Telecoil Units

23. Directional microphone

24. Baha ® Softband

25. One-Stage Surgery –Surgical procedure: Fixture and Abutment installation –3-4 month osseointegration period –Fitting of the Sound Processor Two-Stage Surgery –Surgical procedure: Fixture installation –3-6 month osseointegration –Surgical procedure: Abutment installation –3-6 week healing period –Fitting of the Sound Processor Baha ® Surgery

26. Surgery Overview