WO2003063957B1 - Method and apparatus for shielding wire for mri resistant electrode systems - Google Patents

Method and apparatus for shielding wire for mri resistant electrode systems

Info

Publication number
WO2003063957B1
WO2003063957B1 PCT/US2003/002260 US0302260W WO03063957B1 WO 2003063957 B1 WO2003063957 B1 WO 2003063957B1 US 0302260 W US0302260 W US 0302260W WO 03063957 B1 WO03063957 B1 WO 03063957B1
Authority
WO
WIPO (PCT)
Prior art keywords
conductor
electrode
shield conductor
shield
coupled
Prior art date
Application number
PCT/US2003/002260
Other languages
French (fr)
Other versions
WO2003063957A2 (en
WO2003063957A3 (en
Inventor
Volkert A Zeijemaker
Original Assignee
Medtronic Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Medtronic Inc filed Critical Medtronic Inc
Publication of WO2003063957A2 publication Critical patent/WO2003063957A2/en
Publication of WO2003063957A3 publication Critical patent/WO2003063957A3/en
Publication of WO2003063957B1 publication Critical patent/WO2003063957B1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/02—Details
    • A61N1/04—Electrodes
    • A61N1/05—Electrodes for implantation or insertion into the body, e.g. heart electrode
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/02—Details
    • A61N1/08—Arrangements or circuits for monitoring, protecting, controlling or indicating
    • A61N1/086—Magnetic resonance imaging [MRI] compatible leads

Abstract

The present invention discloses apparatus and methods for use with implantable medical system. In one embodiment a medical electrical lead is disclosed comprising an electrode wire and a shield wire adjacent to at least a portion of the electrode wire, the electrical lead is capable of insertion within a body and the shield wire is electrically separated from the electrode wire. In another embodiment of the invention a method of shielding a medical electrical lead is disclosed. The method comprises receiving electromagnetic energy within a shield wire that is adjacent at least a portion of the lead. The energy is dissipated into a living body, thus reducing the amount of electromagnetic energy received by the medical electrical lead.

Claims

AMENDED CLAIMS
[received by the International Bureau on 07 November 2003 (07.11.03); original claims 1-22 replaced by new claims 1-5 (1 page)]
1 , An implantable medical electrical system, comprising; an electrode; an electrode conductor coupled to the electrode; a shield conductor adjacent to at least a portion of the electrode conductor, ^he shield conductor being electrically isolated from the electrode conductor ajnd adapted to act as an antenna receiving radiofrequency energy; and a grounded surface coupled to the shield conductor for safely dissipating the radiofrequency energy,
2, The system of claim 1 , further comprising a medical device coupled to the electrode conductor and the shield conductor, the medical device including a housing; wherein the housing forms the grounded surface,
3, The system of claim 1 , wherein the shield conductor is formed from a biocompatible material and a portion of the shield conductor is exposed to form the grounded surface.
4, Theisystem of claim 1 , further comprising a ring coupled to the shield conductor wherein the ring forms the grounded surface.
5, The'system of Claim 1 , wherein the shield conductor is coiled about the electroαe conductor.
PCT/US2003/002260 2002-01-29 2003-01-27 Method and apparatus for shielding wire for mri resistant electrode systems WO2003063957A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/059,594 US20030144719A1 (en) 2002-01-29 2002-01-29 Method and apparatus for shielding wire for MRI resistant electrode systems
US10/059,594 2002-01-29

Publications (3)

Publication Number Publication Date
WO2003063957A2 WO2003063957A2 (en) 2003-08-07
WO2003063957A3 WO2003063957A3 (en) 2003-11-06
WO2003063957B1 true WO2003063957B1 (en) 2003-12-24

Family

ID=27609840

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/002260 WO2003063957A2 (en) 2002-01-29 2003-01-27 Method and apparatus for shielding wire for mri resistant electrode systems

Country Status (2)

Country Link
US (1) US20030144719A1 (en)
WO (1) WO2003063957A2 (en)

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US8897887B2 (en) 2006-06-08 2014-11-25 Greatbatch Ltd. Band stop filter employing a capacitor and an inductor tank circuit to enhance MRI compatibility of active medical devices
US9108066B2 (en) 2008-03-20 2015-08-18 Greatbatch Ltd. Low impedance oxide resistant grounded capacitor for an AIMD
US9186499B2 (en) 2009-04-30 2015-11-17 Medtronic, Inc. Grounding of a shield within an implantable medical lead
US9248283B2 (en) 2001-04-13 2016-02-02 Greatbatch Ltd. Band stop filter comprising an inductive component disposed in a lead wire in series with an electrode
US9259572B2 (en) 2007-04-25 2016-02-16 Medtronic, Inc. Lead or lead extension having a conductive body and conductive body contact
US9295828B2 (en) 2001-04-13 2016-03-29 Greatbatch Ltd. Self-resonant inductor wound portion of an implantable lead for enhanced MRI compatibility of active implantable medical devices
US9302101B2 (en) 2004-03-30 2016-04-05 Medtronic, Inc. MRI-safe implantable lead
US9427596B2 (en) 2013-01-16 2016-08-30 Greatbatch Ltd. Low impedance oxide resistant grounded capacitor for an AIMD
US9463317B2 (en) 2012-04-19 2016-10-11 Medtronic, Inc. Paired medical lead bodies with braided conductive shields having different physical parameter values

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US9295828B2 (en) 2001-04-13 2016-03-29 Greatbatch Ltd. Self-resonant inductor wound portion of an implantable lead for enhanced MRI compatibility of active implantable medical devices
US9248283B2 (en) 2001-04-13 2016-02-02 Greatbatch Ltd. Band stop filter comprising an inductive component disposed in a lead wire in series with an electrode
US9302101B2 (en) 2004-03-30 2016-04-05 Medtronic, Inc. MRI-safe implantable lead
US8897887B2 (en) 2006-06-08 2014-11-25 Greatbatch Ltd. Band stop filter employing a capacitor and an inductor tank circuit to enhance MRI compatibility of active medical devices
US9259572B2 (en) 2007-04-25 2016-02-16 Medtronic, Inc. Lead or lead extension having a conductive body and conductive body contact
US9108066B2 (en) 2008-03-20 2015-08-18 Greatbatch Ltd. Low impedance oxide resistant grounded capacitor for an AIMD
US9216286B2 (en) 2009-04-30 2015-12-22 Medtronic, Inc. Shielded implantable medical lead with guarded termination
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US9427596B2 (en) 2013-01-16 2016-08-30 Greatbatch Ltd. Low impedance oxide resistant grounded capacitor for an AIMD

Also Published As

Publication number Publication date
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US20030144719A1 (en) 2003-07-31
WO2003063957A3 (en) 2003-11-06

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