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    • 5. 发明授权
    • Reducing effect of magnetic and electromagnetic fields on an implant's magnet and/or electronics
    • 降低磁场和电磁场对植入物磁体和/或电子元件的影响
    • US08118725B2
    • 2012-02-21
    • US13116758
    • 2011-05-26
    • Martin ZimmerlingErwin Hochmair
    • Martin ZimmerlingErwin Hochmair
    • H04R25/00H01F7/02
    • H01H36/00A61N1/37A61N1/3718H01H36/0073
    • An implantable magnet that can freely turn in response to an external magnetic field, thus avoiding torque and demagnetization on the implantable magnet. The implantable magnet can be combined with an electric switching function depending on the orientation of an external magnetic field, thus protecting an implanted coil and/or implant electronics against induction of over-voltage or performing an electric switching function for other various purposes. The magnetic switch may further include, for example, a first switching contact and a second switching contact. A magnetically soft body that includes an electrically conductive surface is shiftable between a first position where the body is in simultaneous contact with the first and second switching contacts, and a second position where the body is out of contact with at least one of the first and second switching contacts. The body and the implantable magnet are positioned such that the body is shifted to one of the first position and the second position as a function of the external magnetic field resulting in a magnetic force between the magnet and the magnetically soft body.
    • 可植入磁体可以响应于外部磁场自由转动,从而避免可植入磁体上的扭矩和退磁。 可植入磁体可以根据外部磁场的取向与电开关功能组合,从而保护植入的线圈和/或植入电子器件免受过电压感应或执行用于其他各种目的的电开关功能。 磁开关还可以包括例如第一开关触点和第二开关触点。 包括导电表面的磁软体可以在主体与第一和第二开关触点同时接触的第一位置和第二位置之间移动,其中主体与第一和第二开关触点中的至少一个不接触 第二开关触点。 本体和可植入磁体被定位成使得主体作为外部磁场的函数移动到第一位置和第二位置中的一个,从而在磁体和磁性软体之间产生磁力。
    • 8. 发明申请
    • MRI-safe Electro-magnetic Tranducer
    • MRI安全电磁式传感器
    • US20090134721A1
    • 2009-05-28
    • US12348570
    • 2009-01-05
    • Martin Zimmerling
    • Martin Zimmerling
    • H02K33/00H02K35/00
    • B06B1/045H01H36/0073H02K33/16H02K35/02H04R25/606
    • An electromagnetic transducer includes a housing. At least one coil is associated with the housing. A spherical magnet within the housing is capable of turning in any direction and of moving along an axis. A first keeper and a second keeper are positioned on opposite sides of the magnet, both the first keeper and the second keeper including magnetically soft material and free to move along the axis. A first biasing member holds the first keeper along the axis, and a second biasing element that holds the second keeper along the axis. The first keeper and the second keeper are attracted by magnetic poles of the magnet in the absence of an external magnetic field, such that opposing magnetic poles of the magnet are aligned parallel to the axis. Alternating current flowing through the at least one coil causes a vibration of the magnet, the vibration transferred to the housing.
    • 电磁换能器包括壳体。 至少一个线圈与壳体相关联。 壳体内的球形磁体能够在任何方向上转动并沿轴线移动。 第一保持器和第二保持器位于磁体的相对侧上,第一保持器和第二保持器都包括磁性柔软的材料并且沿着轴线自由移动。 第一偏置构件沿着轴保持第一保持器,以及沿着轴保持第二保持器的第二偏压元件。 第一保持器和第二保持器在没有外部磁场的情况下被磁体的磁极吸引,使得磁体的相对的磁极平行于轴线对准。 流过至少一个线圈的交流电导致磁体的振动,振动传递到壳体。