FR2915565B1 - Agencement de bobines pour un procede et un systeme de tracage electromagnetique - Google Patents

Agencement de bobines pour un procede et un systeme de tracage electromagnetique

Info

Publication number
FR2915565B1
FR2915565B1 FR0851155A FR0851155A FR2915565B1 FR 2915565 B1 FR2915565 B1 FR 2915565B1 FR 0851155 A FR0851155 A FR 0851155A FR 0851155 A FR0851155 A FR 0851155A FR 2915565 B1 FR2915565 B1 FR 2915565B1
Authority
FR
France
Prior art keywords
coil arrangement
tracing method
electromagnetic
electromagnetic tracing
coil
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
FR0851155A
Other languages
English (en)
Other versions
FR2915565A1 (fr
Inventor
Peter Traneus Anderson
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of FR2915565A1 publication Critical patent/FR2915565A1/fr
Application granted granted Critical
Publication of FR2915565B1 publication Critical patent/FR2915565B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/36—Image-producing devices or illumination devices not otherwise provided for
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
    • A61B34/20—Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
    • A61B34/20—Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
    • A61B2034/2046—Tracking techniques
    • A61B2034/2051—Electromagnetic tracking systems
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
    • A61B2090/397—Markers, e.g. radio-opaque or breast lesions markers electromagnetic other than visible, e.g. microwave
    • A61B2090/3975—Markers, e.g. radio-opaque or breast lesions markers electromagnetic other than visible, e.g. microwave active
FR0851155A 2007-02-23 2008-02-22 Agencement de bobines pour un procede et un systeme de tracage electromagnetique Expired - Fee Related FR2915565B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/710,085 US8249689B2 (en) 2007-02-23 2007-02-23 Coil arrangement for electromagnetic tracking method and system

Publications (2)

Publication Number Publication Date
FR2915565A1 FR2915565A1 (fr) 2008-10-31
FR2915565B1 true FR2915565B1 (fr) 2012-11-30

Family

ID=39715136

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0851155A Expired - Fee Related FR2915565B1 (fr) 2007-02-23 2008-02-22 Agencement de bobines pour un procede et un systeme de tracage electromagnetique

Country Status (3)

Country Link
US (1) US8249689B2 (fr)
CN (1) CN101248996B (fr)
FR (1) FR2915565B1 (fr)

Families Citing this family (82)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10026338B2 (en) * 2004-11-30 2018-07-17 The Regents Of The University Of California Embedded motion sensing technology for integration within commercial ultrasound probes
US10726741B2 (en) 2004-11-30 2020-07-28 The Regents Of The University Of California System and method for converting handheld diagnostic ultrasound systems into ultrasound training systems
US11627944B2 (en) 2004-11-30 2023-04-18 The Regents Of The University Of California Ultrasound case builder system and method
US8024026B2 (en) * 2007-05-31 2011-09-20 General Electric Company Dynamic reference method and system for use with surgical procedures
BRPI0918195A2 (pt) * 2008-12-23 2015-12-01 Geotech Airborne Ltd ''conjunto de reboque de bobinas receptoras para prospecção geofísica
US8475407B2 (en) 2010-03-25 2013-07-02 Medtronic, Inc. Method and apparatus for guiding an external needle to an implantable device
US8483802B2 (en) 2010-03-25 2013-07-09 Medtronic, Inc. Method and apparatus for guiding an external needle to an implantable device
US9339601B2 (en) * 2010-03-25 2016-05-17 Medtronic, Inc. Method and apparatus for guiding an external needle to an implantable device
US9216257B2 (en) * 2010-03-25 2015-12-22 Medtronic, Inc. Method and apparatus for guiding an external needle to an implantable device
CN102073044B (zh) * 2010-12-23 2012-11-21 中国农业银行股份有限公司 一种定位设备、定位系统及定位方法
EP2665415A1 (fr) * 2011-01-20 2013-11-27 Enav Medical Ltd. Système et procédé d'estimation de l'emplacement et de l'orientation d'un objet
KR101820301B1 (ko) * 2011-09-07 2018-01-19 삼성전자주식회사 자기 공명 영상 장치 및 그 제어 방법
US11631342B1 (en) 2012-05-25 2023-04-18 The Regents Of University Of California Embedded motion sensing technology for integration within commercial ultrasound probes
US8933776B2 (en) * 2012-07-20 2015-01-13 Qualcomm Incorporated Relative positioning applications in wireless devices
DE102012223418B4 (de) * 2012-12-17 2022-02-03 Siemens Healthcare Gmbh Vorrichtung und Verfahren zur Bestimmung der Lage eines medizinischen Instruments
CN103324307A (zh) * 2013-05-21 2013-09-25 东南大学 一种无线受电鼠标
EP2999972A4 (fr) * 2013-05-23 2017-03-01 Yeda Research and Development Co., Ltd. Dispositif capteur pour imagerie directe par champ magnétique
US10380919B2 (en) 2013-11-21 2019-08-13 SonoSim, Inc. System and method for extended spectrum ultrasound training using animate and inanimate training objects
CN103699123B (zh) * 2013-12-02 2016-05-25 北京工业大学 一种基于三个电磁传感器的机器人导航方法
US9853837B2 (en) 2014-04-07 2017-12-26 Lockheed Martin Corporation High bit-rate magnetic communication
US10520558B2 (en) 2016-01-21 2019-12-31 Lockheed Martin Corporation Diamond nitrogen vacancy sensor with nitrogen-vacancy center diamond located between dual RF sources
US9824597B2 (en) 2015-01-28 2017-11-21 Lockheed Martin Corporation Magnetic navigation methods and systems utilizing power grid and communication network
US10120039B2 (en) 2015-11-20 2018-11-06 Lockheed Martin Corporation Apparatus and method for closed loop processing for a magnetic detection system
US10088452B2 (en) 2016-01-12 2018-10-02 Lockheed Martin Corporation Method for detecting defects in conductive materials based on differences in magnetic field characteristics measured along the conductive materials
US10241158B2 (en) 2015-02-04 2019-03-26 Lockheed Martin Corporation Apparatus and method for estimating absolute axes' orientations for a magnetic detection system
US9614589B1 (en) * 2015-12-01 2017-04-04 Lockheed Martin Corporation Communication via a magnio
US9638821B2 (en) 2014-03-20 2017-05-02 Lockheed Martin Corporation Mapping and monitoring of hydraulic fractures using vector magnetometers
US10088336B2 (en) 2016-01-21 2018-10-02 Lockheed Martin Corporation Diamond nitrogen vacancy sensed ferro-fluid hydrophone
US10168393B2 (en) 2014-09-25 2019-01-01 Lockheed Martin Corporation Micro-vacancy center device
US9910104B2 (en) 2015-01-23 2018-03-06 Lockheed Martin Corporation DNV magnetic field detector
US10006973B2 (en) 2016-01-21 2018-06-26 Lockheed Martin Corporation Magnetometer with a light emitting diode
US9910105B2 (en) 2014-03-20 2018-03-06 Lockheed Martin Corporation DNV magnetic field detector
US10338162B2 (en) 2016-01-21 2019-07-02 Lockheed Martin Corporation AC vector magnetic anomaly detection with diamond nitrogen vacancies
CA2945016A1 (fr) 2014-04-07 2015-10-15 Lockheed Martin Corporation Circuit generateur de champ magnetique a commande orientee vers l'efficacite energetique
US10588541B2 (en) 2014-07-15 2020-03-17 General Electric Company Magnetic tracker system and method for use for surgical navigation
WO2016118756A1 (fr) 2015-01-23 2016-07-28 Lockheed Martin Corporation Appareil et procédé pour mesure de magnétométrie à haute sensibilité et traitement de signal dans un système de détection magnétique
EP3251193A4 (fr) 2015-01-28 2018-08-08 Lockheed Martin Corporation Charge d'alimentation in situ
WO2016126436A1 (fr) 2015-02-04 2016-08-11 Lockheed Martin Corporation Appareil et procédé pour la récupération de champ magnétique en trois dimensions à partir d'un système de détection magnétique
US10411524B2 (en) 2015-06-23 2019-09-10 Witricity Corporation Systems, methods and apparatuses for guidance and alignment in electric vehicles wireless inductive charging systems
US10340752B2 (en) * 2015-06-23 2019-07-02 Witricity Corporation Systems, methods and apparatuses for guidance and alignment in electric vehicles wireless inductive charging systems
US11600201B1 (en) 2015-06-30 2023-03-07 The Regents Of The University Of California System and method for converting handheld diagnostic ultrasound systems into ultrasound training systems
WO2017078766A1 (fr) 2015-11-04 2017-05-11 Lockheed Martin Corporation Filtre passe-bande magnétique
WO2017087014A1 (fr) 2015-11-20 2017-05-26 Lockheed Martin Corporation Appareil et procédé de détection de l'hypersensibilité d'un champ magnétique
CN105676172B (zh) * 2016-01-11 2019-02-22 无锡知谷网络科技有限公司 簇式磁场定位的方法、装置和系统
WO2017127081A1 (fr) 2016-01-21 2017-07-27 Lockheed Martin Corporation Capteur azote-lacune de diamant avec circuit sur le diamant
GB2562957A (en) 2016-01-21 2018-11-28 Lockheed Corp Magnetometer with light pipe
WO2017127090A1 (fr) 2016-01-21 2017-07-27 Lockheed Martin Corporation Sensibilité magnétique supérieure par manipulation de fluorescence par contrôle de spectre de phonons
WO2017127095A1 (fr) 2016-01-21 2017-07-27 Lockheed Martin Corporation Capteur de diamant à centre azote-lacune avec générateur de champs rf et magnétiques communs
US10327667B2 (en) 2016-05-13 2019-06-25 Becton, Dickinson And Company Electro-magnetic needle catheter insertion system
US10145910B2 (en) 2017-03-24 2018-12-04 Lockheed Martin Corporation Photodetector circuit saturation mitigation for magneto-optical high intensity pulses
US10677953B2 (en) 2016-05-31 2020-06-09 Lockheed Martin Corporation Magneto-optical detecting apparatus and methods
US10317279B2 (en) 2016-05-31 2019-06-11 Lockheed Martin Corporation Optical filtration system for diamond material with nitrogen vacancy centers
US10228429B2 (en) 2017-03-24 2019-03-12 Lockheed Martin Corporation Apparatus and method for resonance magneto-optical defect center material pulsed mode referencing
US10359479B2 (en) 2017-02-20 2019-07-23 Lockheed Martin Corporation Efficient thermal drift compensation in DNV vector magnetometry
US10330744B2 (en) 2017-03-24 2019-06-25 Lockheed Martin Corporation Magnetometer with a waveguide
US10571530B2 (en) 2016-05-31 2020-02-25 Lockheed Martin Corporation Buoy array of magnetometers
US10274550B2 (en) 2017-03-24 2019-04-30 Lockheed Martin Corporation High speed sequential cancellation for pulsed mode
US10281550B2 (en) 2016-11-14 2019-05-07 Lockheed Martin Corporation Spin relaxometry based molecular sequencing
US20170343621A1 (en) 2016-05-31 2017-11-30 Lockheed Martin Corporation Magneto-optical defect center magnetometer
US10408890B2 (en) 2017-03-24 2019-09-10 Lockheed Martin Corporation Pulsed RF methods for optimization of CW measurements
US10527746B2 (en) 2016-05-31 2020-01-07 Lockheed Martin Corporation Array of UAVS with magnetometers
US10345395B2 (en) 2016-12-12 2019-07-09 Lockheed Martin Corporation Vector magnetometry localization of subsurface liquids
US10345396B2 (en) 2016-05-31 2019-07-09 Lockheed Martin Corporation Selected volume continuous illumination magnetometer
US10338163B2 (en) 2016-07-11 2019-07-02 Lockheed Martin Corporation Multi-frequency excitation schemes for high sensitivity magnetometry measurement with drift error compensation
US10371765B2 (en) 2016-07-11 2019-08-06 Lockheed Martin Corporation Geolocation of magnetic sources using vector magnetometer sensors
US10583269B2 (en) 2016-06-01 2020-03-10 Becton, Dickinson And Company Magnetized catheters, devices, uses and methods of using magnetized catheters
US11826522B2 (en) 2016-06-01 2023-11-28 Becton, Dickinson And Company Medical devices, systems and methods utilizing permanent magnet and magnetizable feature
US20170347914A1 (en) 2016-06-01 2017-12-07 Becton, Dickinson And Company Invasive Medical Devices Including Magnetic Region And Systems And Methods
US11413429B2 (en) * 2016-06-01 2022-08-16 Becton, Dickinson And Company Medical devices, systems and methods utilizing permanent magnet and magnetizable feature
US10032552B2 (en) 2016-08-30 2018-07-24 Becton, Dickinson And Company Cover for tissue penetrating device with integrated magnets and magnetic shielding
US10896628B2 (en) 2017-01-26 2021-01-19 SonoSim, Inc. System and method for multisensory psychomotor skill training
US10459041B2 (en) 2017-03-24 2019-10-29 Lockheed Martin Corporation Magnetic detection system with highly integrated diamond nitrogen vacancy sensor
US10371760B2 (en) 2017-03-24 2019-08-06 Lockheed Martin Corporation Standing-wave radio frequency exciter
US10379174B2 (en) 2017-03-24 2019-08-13 Lockheed Martin Corporation Bias magnet array for magnetometer
US10338164B2 (en) 2017-03-24 2019-07-02 Lockheed Martin Corporation Vacancy center material with highly efficient RF excitation
CN106953426B (zh) * 2017-04-21 2020-09-11 天津工业大学 一种新型无线电能传输全向三维发射线圈装置
US20210321937A1 (en) * 2018-08-30 2021-10-21 Trig Medical Ltd. Birth delivery magnetic tracking system
US11810473B2 (en) 2019-01-29 2023-11-07 The Regents Of The University Of California Optical surface tracking for medical simulation
US11495142B2 (en) 2019-01-30 2022-11-08 The Regents Of The University Of California Ultrasound trainer with internal optical tracking
CN115279294A (zh) 2020-01-13 2022-11-01 史赛克公司 在导航辅助手术期间监控偏移的系统
US11730926B2 (en) 2020-08-31 2023-08-22 Avent, Inc. System and method for detecting medical device location and orientation in relation to patient anatomy
GB2612993A (en) * 2021-11-18 2023-05-24 Cmr Surgical Ltd Magnetic positioning system

Family Cites Families (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1450080A (en) * 1919-08-07 1923-03-27 Louis A Hazeltine Method and electric circuit arrangement for neutralizing capacity coupling
US4710708A (en) * 1981-04-27 1987-12-01 Develco Method and apparatus employing received independent magnetic field components of a transmitted alternating magnetic field for determining location
US4849692A (en) 1986-10-09 1989-07-18 Ascension Technology Corporation Device for quantitatively measuring the relative position and orientation of two bodies in the presence of metals utilizing direct current magnetic fields
US4945305A (en) * 1986-10-09 1990-07-31 Ascension Technology Corporation Device for quantitatively measuring the relative position and orientation of two bodies in the presence of metals utilizing direct current magnetic fields
JPS63302535A (ja) * 1987-06-03 1988-12-09 Mitsubishi Electric Corp ガリウム砒素集積回路
ES2115776T3 (es) * 1992-08-14 1998-07-01 British Telecomm Sistema de localizacion de posicion.
US5425382A (en) * 1993-09-14 1995-06-20 University Of Washington Apparatus and method for locating a medical tube in the body of a patient
US5558091A (en) * 1993-10-06 1996-09-24 Biosense, Inc. Magnetic determination of position and orientation
DE4407785A1 (de) * 1994-03-09 1995-09-14 Philips Patentverwaltung Anordnung zur Bestimmung der räumlichen Position eines gegenüber einem Bezugselement verschiebbaren Abtastelements
US5829444A (en) * 1994-09-15 1998-11-03 Visualization Technology, Inc. Position tracking and imaging system for use in medical applications
US5803089A (en) * 1994-09-15 1998-09-08 Visualization Technology, Inc. Position tracking and imaging system for use in medical applications
US5640170A (en) * 1995-06-05 1997-06-17 Polhemus Incorporated Position and orientation measuring system having anti-distortion source configuration
US5592939A (en) * 1995-06-14 1997-01-14 Martinelli; Michael A. Method and system for navigating a catheter probe
WO1997036192A1 (fr) 1996-03-27 1997-10-02 Paul Scherrer Institut Dispositif et procede de determinaton de position
US5782765A (en) * 1996-04-25 1998-07-21 Medtronic, Inc. Medical positioning system
US6129668A (en) * 1997-05-08 2000-10-10 Lucent Medical Systems, Inc. System and method to determine the location and orientation of an indwelling medical device
US5879297A (en) * 1997-05-08 1999-03-09 Lucent Medical Systems, Inc. System and method to determine the location and orientation of an indwelling medical device
FR2768230B1 (fr) * 1997-09-11 2000-05-05 Commissariat Energie Atomique Procede de localisation d'un objet en mouvement par mesures magnetiques gradientmetriques
US6201387B1 (en) * 1997-10-07 2001-03-13 Biosense, Inc. Miniaturized position sensor having photolithographic coils for tracking a medical probe
GB2331807B (en) * 1997-11-15 2002-05-29 Roke Manor Research Catheter tracking system
US6073043A (en) * 1997-12-22 2000-06-06 Cormedica Corporation Measuring position and orientation using magnetic fields
US6052610A (en) * 1998-01-09 2000-04-18 International Business Machines Corporation Magnetic catheter tracker and method therefor
CA2356322A1 (fr) * 1998-12-23 2000-06-29 Peter D. Jakab Scanner a resonance magnetique dote d'un dispositif electromagnetique de suivi de position et d'orientation
US6246231B1 (en) * 1999-07-29 2001-06-12 Ascension Technology Corporation Magnetic field permeable barrier for magnetic position measurement system
WO2001031466A1 (fr) * 1999-10-28 2001-05-03 Winchester Development Associates Structures de bobine et procedes servant a generer des champs magnetiques
US6172499B1 (en) * 1999-10-29 2001-01-09 Ascension Technology Corporation Eddy current error-reduced AC magnetic position measurement system
CA2404923A1 (fr) * 2000-03-31 2001-10-11 Rita Medical Systems, Inc. Appareil et procede de biopsie et traitement tissulaire
US6856827B2 (en) * 2000-04-28 2005-02-15 Ge Medical Systems Global Technology Company, Llc Fluoroscopic tracking and visualization system
JP3839678B2 (ja) * 2001-03-27 2006-11-01 三菱電機株式会社 車両位置認識装置
US6774624B2 (en) * 2002-03-27 2004-08-10 Ge Medical Systems Global Technology Company, Llc Magnetic tracking system
CN2575673Y (zh) * 2002-11-01 2003-09-24 鞍山美斯探伤设备有限公司 电磁跟踪控制装置
DE10307580B3 (de) * 2003-02-22 2004-06-03 Rheinmetall Defence Electronics Gmbh Verfahren zum Bestimmen und Verfolgen von Position und Orientierung eines Magnetfeldsensors
US7158754B2 (en) * 2003-07-01 2007-01-02 Ge Medical Systems Global Technology Company, Llc Electromagnetic tracking system and method using a single-coil transmitter
US8354837B2 (en) * 2003-09-24 2013-01-15 Ge Medical Systems Global Technology Company Llc System and method for electromagnetic tracking operable with multiple coil architectures
US7015859B2 (en) * 2003-11-14 2006-03-21 General Electric Company Electromagnetic tracking system and method using a three-coil wireless transmitter
US7751866B2 (en) * 2004-03-08 2010-07-06 Olympus Corporation Detecting system of position and posture of capsule medical device
US7702379B2 (en) * 2004-08-25 2010-04-20 General Electric Company System and method for hybrid tracking in surgical navigation
US20080154120A1 (en) * 2006-12-22 2008-06-26 General Electric Company Systems and methods for intraoperative measurements on navigated placements of implants

Also Published As

Publication number Publication date
US8249689B2 (en) 2012-08-21
US20080204004A1 (en) 2008-08-28
CN101248996A (zh) 2008-08-27
CN101248996B (zh) 2013-09-04
FR2915565A1 (fr) 2008-10-31

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