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公开(公告)号：US09071221B1
公开(公告)日：2015-06-30
申请号：US14669041
申请日：2015-03-26
Applicant: GREATBATCH LTD.
Inventor： Robert A. Stevenson , Robert Shawn Johnson , Kishore Kumar Kondabatni , Joseph E. Spaulding , Dominick J. Frustaci , Warren S. Dabney , Holly Noelle Moschiano
CPC classification number: H03H7/0123 , A61B5/042 , A61B5/055 , A61B18/1492 , A61B2018/00839 , A61B2090/374 , A61B2562/182 , A61B2562/222 , A61B2562/227 , A61N1/05 , A61N1/08 , A61N1/086 , A61N1/3718 , H03H1/0007 , H03H2001/0021 , H03H2007/013
Abstract: A composite RF current attenuator for a medical lead includes a conductor having a distal electrode contactable to biological cells, a bandstop filter in series with the lead conductor for attenuating RF currents flow through the lead conductor at a selected center frequency or across a range of frequencies about the center frequency, and a lowpass filter in series with the bandstop filter and forming a portion of the lead conductor. The bandstop filter has a capacitance in parallel with a first inductance. In a preferred form, the lowpass filter includes a second inductance in series with the bandstop filter, wherein the values of capacitance and inductances for the composite RF current attenuator are selected such that it attenuates MRI-induced RF current flow in an MRI environment.
Abstract translation: 用于医用引线的复合RF电流衰减器包括具有可与生物细胞接触的远端电极的导体，与引线导体串联的带阻滤波器，用于衰减RF电流以选定的中心频率或跨频率范围流过引线导体 关于中心频率，以及与带阻滤波器串联的低通滤波器，并形成引线导体的一部分。 带阻滤波器具有与第一电感并联的电容。 在优选形式中，低通滤波器包括与带阻滤波器串联的第二电感，其中复合RF电流衰减器的电容值和电感值被选择为使其在MRI环境中衰减MRI诱导的RF电流。
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公开(公告)号：US20150207484A1
公开(公告)日：2015-07-23
申请号：US14669041
申请日：2015-03-26
Applicant: GREATBATCH LTD.
Inventor： Robert A. Stevenson , Robert Shawn Johnson , Kishore Kumar Kondabatni , Joseph E. Spaulding , Dominick J. Frustaci , Warren S. Dabney , Holly Noelle Moschiano
CPC classification number: H03H7/0123 , A61B5/042 , A61B5/055 , A61B18/1492 , A61B2018/00839 , A61B2090/374 , A61B2562/182 , A61B2562/222 , A61B2562/227 , A61N1/05 , A61N1/08 , A61N1/086 , A61N1/3718 , H03H1/0007 , H03H2001/0021 , H03H2007/013
Abstract: A composite RF current attenuator for a medical lead includes a conductor having a distal electrode contactable to biological cells, a bandstop filter in series with the lead conductor for attenuating RF currents flow through the lead conductor at a selected center frequency or across a range of frequencies about the center frequency, and a lowpass filter in series with the bandstop filter and forming a portion of the lead conductor. The bandstop filter has a capacitance in parallel with a first inductance. In a preferred form, the lowpass filter includes a second inductance in series with the bandstop filter, wherein the values of capacitance and inductances for the composite RF current attenuator are selected such that it attenuates MRI-induced RF current flow in an MRI environment.
Abstract translation: 用于医用引线的复合RF电流衰减器包括具有可与生物细胞接触的远端电极的导体，与引线导体串联的带阻滤波器，用于衰减RF电流以选定的中心频率或跨频率范围流过引线导体 关于中心频率，以及与带阻滤波器串联的低通滤波器，并形成引线导体的一部分。 带阻滤波器具有与第一电感并联的电容。 在优选形式中，低通滤波器包括与带阻滤波器串联的第二电感，其中复合RF电流衰减器的电容值和电感值被选择为使其在MRI环境中衰减MRI诱导的RF电流。
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