DE69222941T2 - Magnetfelddetektor - Google Patents

Magnetfelddetektor

Info

Publication number
DE69222941T2
DE69222941T2 DE69222941T DE69222941T DE69222941T2 DE 69222941 T2 DE69222941 T2 DE 69222941T2 DE 69222941 T DE69222941 T DE 69222941T DE 69222941 T DE69222941 T DE 69222941T DE 69222941 T2 DE69222941 T2 DE 69222941T2
Authority
DE
Germany
Prior art keywords
magnetic field
field detector
detector
magnetic
field
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
DE69222941T
Other languages
English (en)
Other versions
DE69222941D1 (de
Inventor
Christer Ekwall
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pacesetter AB
Original Assignee
Pacesetter AB
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 Pacesetter AB filed Critical Pacesetter AB
Publication of DE69222941D1 publication Critical patent/DE69222941D1/de
Application granted granted Critical
Publication of DE69222941T2 publication Critical patent/DE69222941T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/038—Measuring direction or magnitude of magnetic fields or magnetic flux using permanent magnets, e.g. balances, torsion devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 
    • A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves  involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/06—Devices, other than using radiation, for detecting or locating foreign bodies ; determining position of probes within or on the body of the patient
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/18—Applying electric currents by contact electrodes
    • A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
    • A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
    • A61N1/362—Heart stimulators
    • A61N1/365—Heart stimulators controlled by a physiological parameter, e.g. heart potential
    • A61N1/36514—Heart stimulators controlled by a physiological parameter, e.g. heart potential controlled by a physiological quantity other than heart potential, e.g. blood pressure
    • A61N1/36542—Heart stimulators controlled by a physiological parameter, e.g. heart potential controlled by a physiological quantity other than heart potential, e.g. blood pressure controlled by body motion, e.g. acceleration

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Cardiology (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Biophysics (AREA)
  • Animal Behavior & Ethology (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Surgery (AREA)
  • Pathology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Physiology (AREA)
  • Hematology (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Human Computer Interaction (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Measuring Magnetic Variables (AREA)
DE69222941T 1992-09-29 1992-09-29 Magnetfelddetektor Expired - Fee Related DE69222941T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92116649A EP0590178B1 (de) 1992-09-29 1992-09-29 Magnetfelddetektor

Publications (2)

Publication Number Publication Date
DE69222941D1 DE69222941D1 (de) 1997-12-04
DE69222941T2 true DE69222941T2 (de) 1998-03-05

Family

ID=8210070

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69222941T Expired - Fee Related DE69222941T2 (de) 1992-09-29 1992-09-29 Magnetfelddetektor

Country Status (4)

Country Link
US (1) US5424642A (de)
EP (1) EP0590178B1 (de)
JP (1) JPH06194432A (de)
DE (1) DE69222941T2 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9403188D0 (sv) * 1994-09-22 1994-09-22 Siemens Elema Ab Magnetfältsdetektor vid ett medicinskt implantat
US5731703A (en) * 1995-10-31 1998-03-24 The Charles Stark Draper Laboratory, Inc. Micromechanical d'arsonval magnetometer
FR2770305B1 (fr) * 1997-10-23 1999-11-26 Valeo Systemes De Fermetures Capteur piezo-inductif, procede de detection utilisant ce capteur, dispositif pour la mise en oeuvre de ce procede et serrure equipee de ce dispositif
JP2003059761A (ja) * 2001-08-09 2003-02-28 Murata Mfg Co Ltd 可変容量コンデンサ及び共振器
US7561915B1 (en) 2004-12-17 2009-07-14 Cardiac Pacemakers, Inc. MRI system having implantable device safety features
US8014867B2 (en) 2004-12-17 2011-09-06 Cardiac Pacemakers, Inc. MRI operation modes for implantable medical devices
US8032228B2 (en) 2007-12-06 2011-10-04 Cardiac Pacemakers, Inc. Method and apparatus for disconnecting the tip electrode during MRI
US8086321B2 (en) 2007-12-06 2011-12-27 Cardiac Pacemakers, Inc. Selectively connecting the tip electrode during therapy for MRI shielding
US8311637B2 (en) 2008-02-11 2012-11-13 Cardiac Pacemakers, Inc. Magnetic core flux canceling of ferrites in MRI
US8160717B2 (en) 2008-02-19 2012-04-17 Cardiac Pacemakers, Inc. Model reference identification and cancellation of magnetically-induced voltages in a gradient magnetic field
US8571661B2 (en) 2008-10-02 2013-10-29 Cardiac Pacemakers, Inc. Implantable medical device responsive to MRI induced capture threshold changes
EP2398553B1 (de) 2009-02-19 2015-07-22 Cardiac Pacemakers, Inc. Systeme zur bereitstellung einer therapie für arrhythmien in mrt-umgebungen
AU2010328622B2 (en) * 2009-12-08 2014-09-11 Cardiac Pacemakers, Inc. Implantable medical device with automatic tachycardia detection and control in MRI environments
US10744320B2 (en) 2012-04-27 2020-08-18 Medtronic, Inc. Magnetic field detector for implantable medical devices

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2530178A (en) * 1948-06-03 1950-11-14 William R Rathkamp Fluxmeter
US4186324A (en) * 1978-05-11 1980-01-29 Schaevitz Engineering Linear accelerometer with piezoelectric suspension
US4887032A (en) * 1988-05-02 1989-12-12 Ford Motor Company Resonant vibrating structure with electrically driven wire coil and vibration sensor
US5036286A (en) * 1988-06-03 1991-07-30 The Research Corporation Of The University Of Hawaii Magnetic and electric force sensing method and apparatus
US4931732A (en) * 1988-07-25 1990-06-05 Cornell Research Foundation, Inc. Magnetic flexure system for determining superconductive properties of a sample
US4905698A (en) * 1988-09-13 1990-03-06 Pharmacia Deltec Inc. Method and apparatus for catheter location determination

Also Published As

Publication number Publication date
EP0590178B1 (de) 1997-10-29
DE69222941D1 (de) 1997-12-04
US5424642A (en) 1995-06-13
EP0590178A1 (de) 1994-04-06
JPH06194432A (ja) 1994-07-15

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Legal Events

Date Code Title Description
8327 Change in the person/name/address of the patent owner

Owner name: PACESETTER AB, JAERFAELLA, SE

8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Representative=s name: KRAMER - BARSKE - SCHMIDTCHEN, 81245 MUENCHEN

8339 Ceased/non-payment of the annual fee