Implantable medical device comprising a wireless transcutaneous link
摘要
說明書
In one embodiment, the above disclosed embodiments are also applicable for telemetry whereby feedback is provided from an implantable unit to an external unit such as in a cochlear implant system. In this set up, the above disclosed embodiments may be modified such that the implantable receiver coil acts as an implantable transmitter coil and the transmitter coil of the external unit acts as an external receiver coil. These modifications are within the scope of this disclosure. Such set up would provide the same advantage in terms of coupling coefficient as embodiments disclosed earlier in this section.
Thus, in this embodiment, a medical device is disclosed. The medical device includes an implantable unit and external unit. The implantable transmitter coil is configured to transmit feedback telemetry data over a wireless transcutaneous link, and a processing unit configured to instruct the implantable transmitter coil to transmit the feedback telemetry data. The external unit includes a coil unit comprising a loop structure with an external receiver coil being wound around and along at least a part of length of the loop structure, the external receiver coil being adapted to receive the feedback telemetry data, a fixation unit configured to attach the loop structure to a user's body i) proximal to an implantable transmitter coil that is configured to be implanted within a body part, and ii) around a body part of a user such that a part of the body part is positioned in a hollow section of the loop structure. The wireless transcutaneous link comprises a coupling between the implantable transmitter coil and the external receiver coil, and when the loop structure is attached using the fixation unit, at least a substantial number of magnetic field lines generated in response to excitation of the implantable transmitter coil passes through the external receiver coil.
