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    • 5. 发明授权
    • MRI safe actuator for implantable floating mass transducer
    • 用于可植入浮动质量传感器的MRI安全致动器
    • US09264825B2
    • 2016-02-16
    • US13598759
    • 2012-08-30
    • Geoffrey BallPeter LampacherWolfgang AmrheinGunther Weidenholzer
    • Geoffrey BallPeter LampacherWolfgang AmrheinGunther Weidenholzer
    • H04R25/00
    • H04R25/606H04R2225/67H04R2460/13
    • An implantable hearing prosthesis for a recipient patient is described. An implantable signal transducer includes one or more electromagnetic drive coils for receiving an electrical stimulation signal and a cylindrical transducer magnet arrangement including an inner disk magnet having a first magnetic field direction, and an outer annular magnet surrounding the inner rod magnet and having a second magnetic field direction opposite to the first magnetic field direction. Current flow through the one or more electromagnetic drive coils from the electrical stimulation signal creates a coil magnetic field that interacts with the magnetic fields of the transducer magnet arrangement to create vibration in the transducer magnet which is developed by the signal transducer as a mechanical stimulation signal for audio perception by the patient.
    • 描述了用于接受者患者的可植入听力假体。 可植入信号传感器包括用于接收电刺激信号的一个或多个电磁驱动线圈和包括具有第一磁场方向的内圆盘磁体的圆柱形换能器磁体装置和围绕内棒磁体的外环形磁体,并具有第二磁 场方向与第一磁场方向相反。 从电刺激信号流过一个或多个电磁驱动线圈的电流产生与换能器磁体布置的磁场相互作用的线圈磁场,以在由信号传感器开发的换能器磁体中产生振动,作为机械刺激信号 用于患者的音频感知。