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    • 10. 发明授权
    • Reforming wet-tantalum capacitors in implantable defibrillators and other medical devices
    • 在植入式除颤器和其他医疗设备中改造湿钽电容器
    • US07171267B2
    • 2007-01-30
    • US10633942
    • 2003-08-04
    • Robert S. HarguthRon BalczewskiWilliam J. LinderGregory Scott MunsonMichael Wesley Paris
    • Robert S. HarguthRon BalczewskiWilliam J. LinderGregory Scott MunsonMichael Wesley Paris
    • A61N1/00
    • A61N1/3956
    • Miniature defibrillators and cardioverters detect abnormal heart rhythms and automatically apply electrical therapy to restore normal heart function. Critical components in these devices are aluminum electrolytic capacitors, which store and deliver one or more life-saving bursts of electric charge to a heart of a patient. This type of capacitor requires regular “reform” to preserve its charging efficiency over time. Because reform expends valuable battery life, manufacturers developed wet-tantalum capacitors, which are generally understood not to require reform. Yet, the present inventors discovered through extensive study that wet-tantalum capacitors exhibit progressively worse charging efficiency over time. Accordingly, to address this problem, the inventors devised unique reform techniques for wet-tantalum capacitors. One exemplary technique entails charging wet-tantalum capacitors to a voltage equal to about 90% of their rated voltage and maintaining this voltage for about five minutes before discharging them.
    • 微型除颤器和心脏转复器检测异常心律,并自动应用电疗法恢复正常的心脏功能。 这些设备中的关键部件是铝电解电容器,其将一个或多个拯救生命的电荷脉冲存储并传送到患者的心脏。 这种类型的电容器需要经常的“改造”以保持其充电效率随着时间的推移。 由于改造花费了宝贵的电池寿命,制造商开发了湿钽电容器,这通常被认为不需要改造。 然而,本发明人通过广泛的研究发现,湿钽电容器随着时间的推移呈现逐渐变差的充电效率。 因此,为了解决这个问题,本发明人为湿钽电容器设计了独特的改进技术。 一个示例性技术需要将湿钽电容器充电至等于其额定电压的约90%的电压,并在放电之前维持该电压约五分钟。