公开(公告)号：WO1997020331A1

公开(公告)日：1997-06-05

申请号：PCT/US1996018728

申请日：1996-11-22

Applicant: MAXWELL LABORATORIES, INC.

Inventor： MAXWELL LABORATORIES, INC. ,  STEVENSON, Robert, A.

IPC: H01G04/35

CPC classification number: H01G4/35 ,  A61N1/3754

Abstract: An improved capacitor is provided particularly for use in electromagnetic interference (EMI) filter applications, for example, in an implantable medical device such as a heart pacemaker or defibrillator, to accommodate relatively high pulse currents. The capacitor comprises a plurality of active and ground electrode plates (14, 16) interleaved and embedded within a dielectric casing of ceramic (12) or the like with each active and ground plate being defined by a closely spaced pair of conductive plate elements (22, 24) which significantly increase the total area of each electrode plate, and thereby correspondingly increase the current handling capacity of the capacitor.

Abstract translation: 提供了一种改进的电容器，特别用于电磁干扰（EMI）滤波器应用中，例如在诸如心脏起搏器或除颤器的可植入医疗装置中，以适应较高的脉冲电流。 电容器包括多个有源和接地电极板（14,16），其交错并嵌入在陶瓷（12）等的电介质外壳内，每个有源和接地板由紧密隔开的一对导电板元件（22 ，24），其显着增加每个电极板的总面积，从而相应地增加电容器的电流处理能力。

公开(公告)号：WO1997020332A1

公开(公告)日：1997-06-05

申请号：PCT/US1996018750

申请日：1996-11-22

Applicant: MAXWELL LABORATORIES, INC.

Inventor： MAXWELL LABORATORIES, INC. ,  STEVENSON, Robert, A. ,  NI, Dick, H.

IPC: H01G04/35

CPC classification number: H01G4/005 ,  A61N1/3754 ,  H01G4/35

Abstract: An improved ceramic feedthrough capacitor design which results in distinct advantages in EMI (electromagnetic interference) filtering and therapeutic waveform management for implantable defibrillators and pacemakers and the like. The invention provides ceramic capacitor electrode plate designs (22) which provide both low impedance decoupling for EMI suppression, and, at the same time provide an isolated common ground point (G1) through a separate coupling capacitor for electrical isolation of the filtered circuit from the metal case (usually titanium) of the defibrillator or the like. Such an arrangement allows the defibrillator HV (high voltage) output pulse to the heart to be referenced lead to lead (including reverse polarity), or from either lead to a common floating ground point or to the titanium case.

Abstract translation: 改进的陶瓷馈通电容器设计，其对于可植入的除颤器和起搏器等的EMI（电磁干扰）滤波和治疗波形管理产生明显的优点。 本发明提供了陶瓷电容器电极板设计（22），其提供用于EMI抑制的低阻抗去耦，并且同时通过单独的耦合电容器提供隔离的公共接地点（G1），用于将滤波电路与 除颤器的金属外壳（通常为钛）等。 这样的配置允许引用心脏的除颤器HV（高电压）输出脉冲导致引线（包括反向极性），或从引线到公共浮点或钛壳。