Ossicle prosthesis comprising a built-up attaching element

摘要

An ossicular prosthesis formed as a sound-conducting, elongated prosthesis body has a first coupling element designed as a tympanic membrane top plate or a clip or a connecting piece to an actuator end piece of an active hearing implant and a second coupling element provided with an access opening into a receiving space designed as a bell or a clip for a mechanical connection of the prosthesis to the head of the stapes. The second coupling element has a backing section on an inner surface of the receiving space as an axial extension of the prosthesis body. The backing section protrudes from the prosthesis body into the receiving space. In an implanted state, the backing section bears against a head of the stapes and prevents a formation of a hollow space between the stapes and an inner surface of the receiving space in an axial extension of the elongated prosthesis body. As a result, additional degrees of freedom are obtained for individualized adaptation to anatomical circumstances of a specific patient in terms of shape, size and position of the patient's stapes bone.

主权项

1. An ossicular prosthesis designed to replace or bridge at least one element of a human ossicular chain, comprising:
a sound-conducting, elongated prosthesis body; on a first end of the elongated prosthesis body, a first coupling element designed as a top plate configured for placement of the prosthesis against a tympanic membrane, or as a clip for mechanical connection to a component of the ossicular chain or as a connecting piece for a sound-conducting connection to an actuator end piece of an active hearing implant on a first end; and on a second end of the elongated prosthesis body, a second coupling element having an access opening in a receiving space is designed as a bell or clip configured to receive a stapes or a head of the stapes and mechanically connect the prosthesis thereto; wherein the second coupling element comprises a backing section that projects from an inner surface of the receiving space, as an axial extension of the elongated prosthesis body so that the backing section is configured to bear against the stapes or the head of the stapes in the receiving space and prevents or minimizes the formation of a hollow space between the stapes and the inner surface of the receiving space in the axial extension of the elongated prosthesis body.