Abstract: The invention relates to a template for implanting a housing of an implantable unit of a partially implantable hearing instrument, comprising a template plate comprising an implant position marking opening and a template position indicating element which extends substantially normal with regard to the surface of the template plate, wherein the implant position marking opening is designed to mark the position of a receptacle to be created in the patient's temporal bone for receiving an elevated housing positioning portion of the housing, and wherein the template position indicating element is a projection designed to be seen or felt by a surgeon through the patient's skin when the template plate is positioned at the patient's skull to mark the position of said receptacle.

Abstract: A system for in-situ evaluation of the performance of an actuator of a hearing instrument to be implanted in a middle ear cavity of a patient and to be mechanically coupled to an ossicle or to the cochlea includes: a reference output transducer assembly for generating sound waves in the middle ear cavity, means for providing test audio signals as input to the actuator and to the reference transducer assembly, a microphone assembly for being inserted at least in part into the middle ear cavity for picking up sound waves in the middle ear cavity generated by vibrations of the actuator and by the reference output transducer assembly according to the test audio signals and for providing for an output signal corresponding to the picked-up sound waves, and means for analyzing the output signals of the microphone assembly in order to evaluate the actuator performance.

Abstract: The invention relates to a template for implanting a housing of an implantable unit of a partially implantable hearing instrument, comprising a template plate comprising an implant position marking opening and a template position indicating element which extends substantially normal with regard to the surface of the template plate, wherein the implant position marking opening is designed to mark the position of a receptacle to be created in the patient's temporal bone for receiving an elevated housing positioning portion of the housing, and wherein the template position indicating element is a projection designed to be seen or felt by a surgeon through the patient's skin when the template plate is positioned at the patient's skull to mark the position of said receptacle.

Abstract: A system for in-situ evaluation of the performance of an actuator of a hearing instrument to be implanted in a middle ear cavity of a patient and to be mechanically coupled to an ossicle or to the cochlea includes: a reference output transducer assembly for generating sound waves in the middle ear cavity, means for providing test audio signals as input to the actuator and to the reference transducer assembly, a microphone assembly for being inserted at least in part into the middle ear cavity for picking up sound waves in the middle ear cavity generated by vibrations of the actuator and by the reference output transducer assembly according to the test audio signals and for providing for an output signal corresponding to the picked-up sound waves, and means for analyzing the output signals of the microphone assembly in order to evaluate the actuator performance.