Middle ear ossicular chain prosthesis, with a porous hydroxylapatite flange

摘要

In the middle ear ossicular chain prosthesis, the tympanic end part (12), a face (14) of which makes contact with the tympanic membrane, is formed of ceramic hydroxylapatite. The constituent ceramic hydroxylapatite of the tympanic end part is porous with a pore size of between 100 and 400 micrometres.