Abstract: An electric switching device for an implantable hearing aid is disclosed. The device automatically, directly or indirectly activates the power consumption for an implantable hearing aid when an outer sound processor is installed on the patient and turns off/reduces the power consumption when the sound processor is removed.

Abstract: An electrical network for driving electromagnetic bone conduction vibrator/transducer of variable reluctance type which is applied between the vibrator terminals and the power amplifier terminals so that the vibrator mechanical output is maximized in the mid and high frequencies.

Abstract: A bone conduction transducer comprising a first seismic mass and a second mass connected to each other by a first spring suspension, and where the first mass and the first spring suspension creates a first mechanical resonance f1 in the low frequency range, and that a second mechanical resonance f2 is created in the high frequency range by interaction between the second mass and a second spring compliance that is introduced between the second mass and the skull.

Abstract: An electrical network for driving electromagnetic bone conduction vibrator/transducer of variable reluctance type which is applied between the vibrator terminals and the power amplifier terminals so that the vibrator mechanical output is maximized in the mid and high frequencies.

Abstract: A method and device for connecting a bone conductor transducer contained in a housing to the skull bone for the transmission of vibrations characterized by, that the housing has at least one surface, which is placed against the bottom plane of a recess shaped in the temporal bone with a static force exceeding the dynamic signal forces.

Abstract: The present invention relates to a method for fitting and verification of direct bone conduction hearing devices to a patient, wherein a. in a first step the hearing threshold and loudness discomfort levels are measured directly on a titanium implant of a patient, b. in a second step these hearing threshold and loudness discomfort levels are converted to equivalent force thresholds (FHT) and loudness discomfort levels (FLDL) on an artificial skull force measuring device, c. in a final step the output force levels of the direct bone conduction hearing device is measured in a free sound field with the device attached to the said artificial skull force measuring device and compared to the FHT and the FLDL as the base for final adjustments of the device.

Abstract: A bone conduction transducer comprising a first seismic mass and a second mass connected to each other by a first spring suspension, and where the first mass and the first spring suspension creates a first mechanical resonance f1 in the low frequency range, and that a second mechanical resonance f2 is created in the high frequency range by interaction between the second mass and a second spring compliance that is introduced between the second mass and the skull.

Abstract: The present invention is intended as a method for producing an electromagnetic transducer of variable reluctance type, where the transducer's seismic mass side and load side are mounted together in a first step while the inner and/or outer air gaps are supplied with shims in order to create balanced air gaps in an axial direction between the bobbin core's arms and the inner and outer yokes, whereupon in a second step the bobbin core is fixed through the side piece to an adapter already attached in a corresponding free moving end of a spring suspension, with compliant properties working in an axial direction and arranged between the seismic mass side and the load side in resting state in order to maintain balanced air gaps when finally, in a third step, the shims are removed and the air gaps are released.

Abstract: The present invention relates to an electromagnetic vibrator of variable reluctance type, according to a new principle which provides higher efficiency, smaller dimension, and higher reliability compared to known technology. This has been obtained by that the magnetic signal flux generated by the coil is closed through a bobbin body and one or more yokes, and wherein the bobbin body and the yokes are made of laminated metal sheets having good magnetic properties.

Abstract: The present invention relates to a percutaneous bone anchored transferring device and a connecting device for obtaining a transfer of an electrical signal and/or energy and/or distribution of a drug and/or airing of a body cavity and a system and a method for using the same.

Abstract: The present invention relates to an electromagnetic vibrator of variable reluctance type, according to a new principle which provides higher efficiency, smaller dimension, and higher reliability compared to known technology. This has been obtained by the magnetic signal flux around the coil is closed through a bobbin body and a yoke and through air gaps formed between bobbin body and yoke(s) where a static flux from one or more of the permanent magnets and the signal flux cooperates so that static forces are outbalanced and so that axial signal forces are generated. The new vibrator principle has been names: Balanced Electromagnetic Separation Transducer (BEST).