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    • 6. 发明授权
    • Antenna system with safety mode
    • 天线系统具有安全模式
    • US08489198B2
    • 2013-07-16
    • US12596868
    • 2008-04-21
    • Eugenio CantatoreRobert Paul Kleihorst
    • Eugenio CantatoreRobert Paul Kleihorst
    • A61N1/00A61F2/02
    • H01Q1/2225G01R33/285G01R33/288H01Q7/00
    • An antenna system for an implantable device like a cardiac pacemaker or a cochlear implant. The antenna system includes at least two coil units coupled with their terminals to a control circuit which can selectively connect the coil units in series or in anti-series, corresponding to a “operational mode” and a “safety mode”, respectively. In the operational mode, magnetically induced voltages in the coil units add, while they subtract and therefore completely or partially compensate in the safety mode. Thus the implantable device can be protected from damage due to extraordinarily large changing rates of external magnetic fields as they exist for example during MRI examinations.
    • 用于可植入装置的天线系统,如心脏起搏器或耳蜗植入物。 天线系统包括至少两个与其端子耦合的线圈单元到控制电路,该控制电路可以分别对应于“操作模式”和“安全模式”来选择性地串联连接或反串联线圈单元。 在操作模式中,线圈单元中的磁感应电压增加,而它们在安全模式中减去并因此完全或部分地补偿。 因此,由于例如在MRI检查中存在的外部磁场的变化率非常大,因此可以保护可植入装置免受损坏。
    • 7. 发明申请
    • ANTENNA SYSTEM WITH SAFETY MODE
    • 具有安全模式的天线系统
    • US20100131033A1
    • 2010-05-27
    • US12596868
    • 2008-04-21
    • Eugenio CantatoreRobert Paul Kleihorst
    • Eugenio CantatoreRobert Paul Kleihorst
    • A61N1/08H01Q3/26H01Q7/00
    • H01Q1/2225G01R33/285G01R33/288H01Q7/00
    • The invention relates to an antenna system (AS) for an implantable device like a cardiac pacemaker or a cochlear implant. The antenna system comprises at least two DD coil units (L1, L2) coupled with their terminals (T1 1, T21, T 12, T22) to a control circuit (CC) which can selectively connect the coil units in series or in anti-series, corresponding to an “operational mode” and a “safety mode”, respectively. In the operational mode, magnetically induced voltages (U1, U2) in the coil units add, while they subtract and therefore completely or partially compensate in the safety mode. Thus the implantable device can be protected from damage due to extraordinarily large changing rates of external magnetic fields as they exist for example during MRI examinations.
    • 本发明涉及用于可植入装置的天线系统(AS),例如心脏起搏器或耳蜗植入物。 天线系统包括至少两个与其端子(T1 1,T21,T12,T22)耦合的DD线圈单元(L1,L2)到控制电路(CC),该控制电路可以选择性地将线圈单元串联或反接地连接, 系列,分别对应于“操作模式”和“安全模式”。 在操作模式中,线圈单元中的磁感应电压(U1,U2)增加,而它们在安全模式下相减,从而完全或部分地进行补偿。 因此,由于例如在MRI检查中存在的外部磁场的变化率非常大,因此可以保护可植入装置免受损坏。
    • 9. 发明申请
    • BIOMEDICAL ELECTRO-STIMULATOR
    • 生物医学电刺激器
    • US20100211145A1
    • 2010-08-19
    • US12682802
    • 2008-10-14
    • Eugenio Cantatore
    • Eugenio Cantatore
    • A61N1/05
    • A61N1/378
    • A power efficient biomedical electro-stimulator circuit BSC is provided. The circuit BSC includes a charging circuit arranged to control charging of a storage capacitor C based on electric energy from an energy source ES, e.g. a battery. The charging circuit includes an energy converter EC that applies a charging current I to the storage capacitor C, this charging current I being substantially constant over a charging period T, thereby providing a power efficient charging. In preferred embodiments, the energy converter EC is an inductive energy converter, e.g. a DC-DC converter, with a control circuit serving to provide an almost constant charging current during the charging period. In another embodiment, the energy converter EC is an energy converter that charges the storage capacitor via a series resonator, e.g. a series connection of an inductor and a capacitor. The proposed biomedical electro-stimulator circuit is advantageous for devices such as pacemakers, and neural stimulation etc. which can benefit of increased battery lifetime due to an efficient charging scheme.
    • 提供功率高效的生物医学电刺激电路BSC。 电路BSC包括充电电路,其布置成基于来自能量源ES的电能来控制存储电容器C的充电,例如, 一个电池 充电电路包括将充电电流I施加到存储电容器C的能量转换器EC,该充电电流I在充电时段T内基本上恒定,从而提供功率有效的充电。 在优选实施例中,能量转换器EC是感应能量转换器,例如。 DC-DC转换器,其中控制电路用于在充电期间提供几乎恒定的充电电流。 在另一个实施例中,能量转换器EC是能量转换器,其通过串联谐振器(例如, 电感器和电容器的串联连接。 所提出的生物医学电刺激电路对于诸如起搏器和神经刺激等装置是有利的,其可以由于有效的充电方案而有益于增加电池寿命。