+

WO1996008999A1 - Utilisation d'un implant a proprietes magnetiques pour determiner la position d'un patient - Google Patents

Utilisation d'un implant a proprietes magnetiques pour determiner la position d'un patient Download PDF

Info

Publication number
WO1996008999A1
WO1996008999A1 PCT/SE1995/001082 SE9501082W WO9608999A1 WO 1996008999 A1 WO1996008999 A1 WO 1996008999A1 SE 9501082 W SE9501082 W SE 9501082W WO 9608999 A1 WO9608999 A1 WO 9608999A1
Authority
WO
WIPO (PCT)
Prior art keywords
patient
implant
relation
magnetic
magnetic field
Prior art date
Application number
PCT/SE1995/001082
Other languages
English (en)
Inventor
Bo Lennernäs
Original Assignee
Lennernaes Bo
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 Lennernaes Bo filed Critical Lennernaes Bo
Priority to EP95933014A priority Critical patent/EP0955879A1/fr
Priority to JP8510822A priority patent/JPH10505776A/ja
Publication of WO1996008999A1 publication Critical patent/WO1996008999A1/fr

Links

Classifications

    • 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 diagnostic devices within or on the body of the patient
    • 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 diagnostic devices within or on the body of the patient
    • A61B5/061—Determining position of a probe within the body employing means separate from the probe, e.g. sensing internal probe position employing impedance electrodes on the surface of the body
    • A61B5/062—Determining position of a probe within the body employing means separate from the probe, e.g. sensing internal probe position employing impedance electrodes on the surface of the body using magnetic field
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • A61N5/1048—Monitoring, verifying, controlling systems and methods
    • A61N5/1049—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam
    • 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
    • A61B2090/3954—Markers, e.g. radio-opaque or breast lesions markers magnetic, e.g. NMR or MRI
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/45—For evaluating or diagnosing the musculoskeletal system or teeth
    • A61B5/4504—Bones
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • A61N5/1048—Monitoring, verifying, controlling systems and methods
    • A61N5/1049—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam
    • A61N2005/1051—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam using an active marker

Definitions

  • the present invention relates to the determination of the position of special points or areas on or in live creatures.
  • live creatures relates to both humans and animals and they will in the following specification and claims, for simplicity reasons, jointly be called "patients”.
  • treatment In medicine it is common to make diagnoses, perform other investigations and treat patients by means of external equipments such as x-ray apparatuses, radiation treatment apparatuses and other types of apparatuses. For simplicity reasons such external diagnosis, other investigation or treatment will in the following jointly be referred to as "treatment". In many cases it is necessary to be able to reproduce the position of the patient in relation to the external equipment as accurately as possible in all space dimensions from one treatment to another. This is in particular true when the treatment might cause damages on surrounding organs, tissue etc., like in, for example, the case with radiation treatment.
  • the presently most common method for determining the position of a patient in relation to the external treatment-equipment from one treatment to another is to make markings on the skin of the patient, for example in the form of "crosses" or the like.
  • This procedure is not very reliable since the skin moves in relation to the internal organs, tissues, etc. which are to be treated. There is, therefore, a great chance that the treatment, in particular if it is radiation treatment, damages healthy internal organs, tissues, etc. in the patient. There is therefore a great need of being able to accurately and in a reproducable manner be able to align a patient in relation to the external equipment from one treat ⁇ ment to another.
  • US-A-5, 125,888 discloses a method for transporting, by means of an electromagnetic field, a drug with attached magnetic object to a desired location in the body, especially the brain, for administration of the drug to that spot, and retraction of the magnetic object.
  • SU-A-1,338,154 discloses a method of matching the radiation parameters in proton therapy, wherin detectors interrupt the treatment if permitted radiation parameters are exceeded.
  • FI,B, 79458 discloses a method and a device for eliminating errors which are caused by the patient's movements in a treatment situation, wherein a mark is made on the skin in the very treatment area. The momentaneous position of this mark is followed by continuously determining the position coordinates of the mark, and treatment is started when the position coordinates of the mark correspond to pre-determined comparison coordinates.
  • WO, Al, 93/00039 discloses a device for detecting and localizing, by means of an electomagnetic field, a metallic object which has been penetrated or implanted into a human or animal body.
  • the reference numeral 1 shows a magnetic implant which e.g. may be an implanted permanent magnet. It is, however, within the scope of the invention possible to choose an arbitrary implant having the ability to produce, as such or in combination with any other material, produce detectable magnetic fields (including electromagnetic fields) and/or changes of magnetic fields, etc.
  • the implant 1 is attached to a suitable body part 2 which, in contrast to the skin, has a comparatively constant position in the body.
  • the body part is a bone in the body.
  • Reference numeral 3 represents the skin of the patient. It is preferred to position the implant as close as possible to the respective area of treatment, but outside the same.
  • the implant can also often be suitable to encapsulate the implant in a more tissue-friendly material.
  • the implant is also preferably provided with devices and/or materials which are known per se and makes an accurate securing of the implant in bones possible, for example screws, plates, orthopedical supports and the like.
  • the implant can be an "explant", i.e. be located in a corresponding position outside the body, preferably in the vicinity of, and positionally connected to, underneath parts, e.g. a bone.
  • the schematically shown device 4 which is located outside the patient, represents one or more sensors detecting magnetic fields and/or changes of magnetic fields, e.g. from the implant 1 and/or another device cooperating therewith.
  • the implant does not have to be magnetic as such, but is capable of acting by induction, it will be possible to use e.g. magnetically insensitive spools of copper which do not interfere with investigations using magnetic resonanse tomography. Since the position of the sensor 4 is known, the position of the im- plant/explant 1 can be calculated in a simple manner. Since the position of the implant in the patient is known, as is also its relation to the target of the treatment such as a radiation target, it is also possible to determine the positions for the patient and the target of the treatment. The design of the sensors 4 can be varied as needed in the individual case, from a simple spool to more advanced elements which are sensitive to magnetic fields, e.g.
  • FIG. 1 shows a sensor 4 built-up from 25 analogous Hall sensors which are arranged in 5 rows of 5 sensors each. By reading the signals from the sensors into a computer 6, using an analogue-to-digital converter 5, each sensor can be read rapidly.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Surgery (AREA)
  • Molecular Biology (AREA)
  • Medical Informatics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biophysics (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Magnetic Treatment Devices (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

Utilisation d'un implant doté de propriétés magnétiques pour déterminer de manière reproductible la position d'un patient dans le temps en relation avec un équipement de traitement externe, et appareil permettant de déterminer de manière reproductible la position d'un patient en relation avec un équipement de traitement externe. Ledit appareil comprend au moins un dispositif magnétique (1) conçu de manière à pouvoir être attaché à une partie du corps, dont la position par rapport à la cible de traitement prévue est pratiquement constante, et au moins un dispositif de détection (4) capable de détecter des champs magnétiques et/ou modifications de champs magnétiques afin de déterminer, sur la base de ladite détection, la position du patient dans l'espace.
PCT/SE1995/001082 1994-09-22 1995-09-22 Utilisation d'un implant a proprietes magnetiques pour determiner la position d'un patient WO1996008999A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP95933014A EP0955879A1 (fr) 1994-09-22 1995-09-22 Utilisation d'un implant a proprietes magnetiques pour determiner la position d'un patient
JP8510822A JPH10505776A (ja) 1994-09-22 1995-09-22 患者の位置を特定する為の磁性を備えたインプラントの使用

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9403193A SE9403193L (sv) 1994-09-22 1994-09-22 Förfarande och anordning för lägesbestämning
SE9403193-7 1994-09-22

Publications (1)

Publication Number Publication Date
WO1996008999A1 true WO1996008999A1 (fr) 1996-03-28

Family

ID=20395339

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1995/001082 WO1996008999A1 (fr) 1994-09-22 1995-09-22 Utilisation d'un implant a proprietes magnetiques pour determiner la position d'un patient

Country Status (4)

Country Link
EP (1) EP0955879A1 (fr)
JP (1) JPH10505776A (fr)
SE (1) SE9403193L (fr)
WO (1) WO1996008999A1 (fr)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998049938A1 (fr) * 1997-05-08 1998-11-12 Lucent Medical Systems, Inc. Systeme et procede permettant de determiner la position et l'orientation d'un dispositif medical a demeure
WO1998052466A1 (fr) * 1997-05-21 1998-11-26 Lucent Medical Systems, Inc. Detection non invasive d'un parametre physique
WO2000051514A1 (fr) * 1999-03-01 2000-09-08 Lucent Medical Systems, Inc. Marqueur magnetique anatomique et procede de mise en oeuvre
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
US6263230B1 (en) 1997-05-08 2001-07-17 Lucent Medical Systems, Inc. System and method to determine the location and orientation of an indwelling medical device
WO2002100485A1 (fr) * 2001-06-08 2002-12-19 Calypso Medical Technologies, Inc. Systeme de radiotherapie guide
WO2003011394A1 (fr) * 2001-07-27 2003-02-13 Bhc Engineering, Lp Procede et dispositif permettant de controler la position en temps reel d'une zone ciblee par un systeme de radiochirurgie
US6675810B2 (en) 1998-05-14 2004-01-13 Calypso Medical Technologies, Inc. System and method for bracketing and removing tissue
WO2004030536A1 (fr) * 2002-10-01 2004-04-15 Potencia Medical Ag Detection d'un orifice d'injection implante
US6812842B2 (en) 2001-12-20 2004-11-02 Calypso Medical Technologies, Inc. System for excitation of a leadless miniature marker
US6822570B2 (en) 2001-12-20 2004-11-23 Calypso Medical Technologies, Inc. System for spatially adjustable excitation of leadless miniature marker
US6838990B2 (en) 2001-12-20 2005-01-04 Calypso Medical Technologies, Inc. System for excitation leadless miniature marker
US6889833B2 (en) 2002-12-30 2005-05-10 Calypso Medical Technologies, Inc. Packaged systems for implanting markers in a patient and methods for manufacturing and using such systems
WO2006077200A1 (fr) * 2005-01-18 2006-07-27 Charité - Universitätsmedizin Berlin Element de marquage endoscopique et instruments d'application et de detection de l'element de marquage et de fixation de la zone tissulaire marquee
US7135978B2 (en) 2001-09-14 2006-11-14 Calypso Medical Technologies, Inc. Miniature resonating marker assembly
US7289839B2 (en) 2002-12-30 2007-10-30 Calypso Medical Technologies, Inc. Implantable marker with a leadless signal transmitter compatible for use in magnetic resonance devices
EP1803413A3 (fr) * 2005-12-30 2008-08-13 DePuy Products, Inc. Ensemble de capteurs magnétiques pour l'acquisition de la géométrie des os en chirurgie orthopédique assistée par ordinateur
AU2006252293B2 (en) * 2005-12-30 2011-10-13 Depuy Products, Inc. System and method for registering a bone of a patient with a computer assisted orthopaedic surgery system
US8068648B2 (en) 2006-12-21 2011-11-29 Depuy Products, Inc. Method and system for registering a bone of a patient with a computer assisted orthopaedic surgery system
US8862200B2 (en) 2005-12-30 2014-10-14 DePuy Synthes Products, LLC Method for determining a position of a magnetic source
US9237860B2 (en) 2008-06-05 2016-01-19 Varian Medical Systems, Inc. Motion compensation for medical imaging and associated systems and methods
US9616248B2 (en) 2002-06-05 2017-04-11 Varian Medical Systems, Inc. Integrated radiation therapy systems and methods for treating a target in a patient
US9764160B2 (en) 2011-12-27 2017-09-19 HJ Laboratories, LLC Reducing absorption of radiation by healthy cells from an external radiation source
WO2023020241A1 (fr) * 2021-08-16 2023-02-23 The University Of Hong Kong Dispositif sans rayonnement et sans contact qui localise avec précision plusieurs implants dans le corps d'un patient
US11986358B2 (en) 2019-03-27 2024-05-21 Gyrus Acmi, Inc. Surgical protection system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4445501A (en) * 1981-05-07 1984-05-01 Mccormick Laboratories, Inc. Circuits for determining very accurately the position of a device inside biological tissue
FI79458B (fi) * 1986-04-16 1989-09-29 Seppo Peltola Foerfarande och anordning foer styrning av en behandlingsanordning.
US4943770A (en) * 1987-04-21 1990-07-24 Mccormick Laboratories, Inc. Device for accurately detecting the position of a ferromagnetic material inside biological tissue
WO1993000039A1 (fr) * 1991-06-25 1993-01-07 Ulrich Steinbeck Detecteur de corps etrangers metalliques dans un corps vivant
WO1994024933A1 (fr) * 1993-04-26 1994-11-10 St. Louis University Indication de la position d'une sonde chirurgicale

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4445501A (en) * 1981-05-07 1984-05-01 Mccormick Laboratories, Inc. Circuits for determining very accurately the position of a device inside biological tissue
FI79458B (fi) * 1986-04-16 1989-09-29 Seppo Peltola Foerfarande och anordning foer styrning av en behandlingsanordning.
US4943770A (en) * 1987-04-21 1990-07-24 Mccormick Laboratories, Inc. Device for accurately detecting the position of a ferromagnetic material inside biological tissue
WO1993000039A1 (fr) * 1991-06-25 1993-01-07 Ulrich Steinbeck Detecteur de corps etrangers metalliques dans un corps vivant
WO1994024933A1 (fr) * 1993-04-26 1994-11-10 St. Louis University Indication de la position d'une sonde chirurgicale

Cited By (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1181891A3 (fr) * 1997-05-08 2002-03-06 Lucent Medical Systems, Inc. Système de détection de la position d'un aimant associé avec un dispositif médical à demeure
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
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
US6216028B1 (en) 1997-05-08 2001-04-10 Lucent Medical Systems, Inc. Method to determine the location and orientation of an indwelling medical device
US6263230B1 (en) 1997-05-08 2001-07-17 Lucent Medical Systems, Inc. System and method to determine the location and orientation of an indwelling medical device
EP1181891A2 (fr) * 1997-05-08 2002-02-27 Lucent Medical Systems, Inc. Système de détection de la position d'un aimant associé avec un dispositif médical à demeure
WO1998049938A1 (fr) * 1997-05-08 1998-11-12 Lucent Medical Systems, Inc. Systeme et procede permettant de determiner la position et l'orientation d'un dispositif medical a demeure
WO1998052466A1 (fr) * 1997-05-21 1998-11-26 Lucent Medical Systems, Inc. Detection non invasive d'un parametre physique
US6698433B2 (en) 1998-05-14 2004-03-02 Calypso Medical Technologies, Inc. System and method for bracketing and removing tissue
US6918919B2 (en) 1998-05-14 2005-07-19 Calypso Medical Technologies, Inc. System and method for bracketing and removing tissue
US6675810B2 (en) 1998-05-14 2004-01-13 Calypso Medical Technologies, Inc. System and method for bracketing and removing tissue
WO2000051514A1 (fr) * 1999-03-01 2000-09-08 Lucent Medical Systems, Inc. Marqueur magnetique anatomique et procede de mise en oeuvre
US6173715B1 (en) 1999-03-01 2001-01-16 Lucent Medical Systems, Inc. Magnetic anatomical marker and method of use
EP2314348A3 (fr) * 2001-06-08 2011-08-03 Calypso Medical Technologies, INC. Système de radiothérapie guidé
US9072895B2 (en) 2001-06-08 2015-07-07 Varian Medical Systems, Inc. Guided radiation therapy system
US7657303B2 (en) 2001-06-08 2010-02-02 Calypso Medical Technologies, Inc. Guided radiation therapy system
US7657302B2 (en) 2001-06-08 2010-02-02 Calypso Medical Technologies, Inc. Guided radiation therapy system
US7657301B2 (en) 2001-06-08 2010-02-02 Calypso Medical Technologies, Inc. Guided radiation therapy system
EP2289597A1 (fr) * 2001-06-08 2011-03-02 Calypso Medical Technologies, INC. Système de radiothérapie guidé
WO2002100485A1 (fr) * 2001-06-08 2002-12-19 Calypso Medical Technologies, Inc. Systeme de radiotherapie guide
WO2003011394A1 (fr) * 2001-07-27 2003-02-13 Bhc Engineering, Lp Procede et dispositif permettant de controler la position en temps reel d'une zone ciblee par un systeme de radiochirurgie
US7535363B2 (en) 2001-09-14 2009-05-19 Calypso Medical Technologies, Inc. Miniature resonating marker assembly
US7135978B2 (en) 2001-09-14 2006-11-14 Calypso Medical Technologies, Inc. Miniature resonating marker assembly
US7696876B2 (en) 2001-12-20 2010-04-13 Calypso Medical Technologies, Inc. System for spatially adjustable excitation of leadless miniature marker
US7176798B2 (en) 2001-12-20 2007-02-13 Calypso Medical Technologies, Inc. System for spatially adjustable excitation of leadless miniature marker
US6838990B2 (en) 2001-12-20 2005-01-04 Calypso Medical Technologies, Inc. System for excitation leadless miniature marker
US6822570B2 (en) 2001-12-20 2004-11-23 Calypso Medical Technologies, Inc. System for spatially adjustable excitation of leadless miniature marker
US6812842B2 (en) 2001-12-20 2004-11-02 Calypso Medical Technologies, Inc. System for excitation of a leadless miniature marker
US9616248B2 (en) 2002-06-05 2017-04-11 Varian Medical Systems, Inc. Integrated radiation therapy systems and methods for treating a target in a patient
US9682253B2 (en) 2002-06-05 2017-06-20 Varian Medical Systems, Inc. Integrated radiation therapy systems and methods for treating a target in a patient
CN100342824C (zh) * 2002-10-01 2007-10-17 波滕西亚医疗公司 植入的注射端口的检测
AU2003265186B2 (en) * 2002-10-01 2008-06-26 Implantica Patent Ltd. Detection of implanted injection port
WO2004030536A1 (fr) * 2002-10-01 2004-04-15 Potencia Medical Ag Detection d'un orifice d'injection implante
US8297030B2 (en) 2002-12-30 2012-10-30 Varian Medical Systems, Inc. Methods for manufacturing packaged systems for implanting markers in a patient
US8857043B2 (en) 2002-12-30 2014-10-14 Varian Medical Systems, Inc. Method of manufacturing an implantable marker with a leadless signal transmitter
US7407054B2 (en) 2002-12-30 2008-08-05 Calypso Medical Technologies, Inc. Packaged systems for implanting markers in a patient and methods for manufacturing and using such systems
US7289839B2 (en) 2002-12-30 2007-10-30 Calypso Medical Technologies, Inc. Implantable marker with a leadless signal transmitter compatible for use in magnetic resonance devices
US8011508B2 (en) 2002-12-30 2011-09-06 Calypso Medical Technologies, Inc. Packaged systems for implanting markers in a patient and methods for manufacturing and using such systems
US6889833B2 (en) 2002-12-30 2005-05-10 Calypso Medical Technologies, Inc. Packaged systems for implanting markers in a patient and methods for manufacturing and using such systems
WO2006077200A1 (fr) * 2005-01-18 2006-07-27 Charité - Universitätsmedizin Berlin Element de marquage endoscopique et instruments d'application et de detection de l'element de marquage et de fixation de la zone tissulaire marquee
US8148978B2 (en) 2005-12-30 2012-04-03 Depuy Products, Inc. Magnetic sensor array
US7525309B2 (en) 2005-12-30 2009-04-28 Depuy Products, Inc. Magnetic sensor array
US8862200B2 (en) 2005-12-30 2014-10-14 DePuy Synthes Products, LLC Method for determining a position of a magnetic source
EP1803413A3 (fr) * 2005-12-30 2008-08-13 DePuy Products, Inc. Ensemble de capteurs magnétiques pour l'acquisition de la géométrie des os en chirurgie orthopédique assistée par ordinateur
AU2006252294B2 (en) * 2005-12-30 2010-08-12 Depuy Products, Inc. Magnetic sensor array
AU2006252293B2 (en) * 2005-12-30 2011-10-13 Depuy Products, Inc. System and method for registering a bone of a patient with a computer assisted orthopaedic surgery system
US8068648B2 (en) 2006-12-21 2011-11-29 Depuy Products, Inc. Method and system for registering a bone of a patient with a computer assisted orthopaedic surgery system
US9237860B2 (en) 2008-06-05 2016-01-19 Varian Medical Systems, Inc. Motion compensation for medical imaging and associated systems and methods
US9764160B2 (en) 2011-12-27 2017-09-19 HJ Laboratories, LLC Reducing absorption of radiation by healthy cells from an external radiation source
US11986358B2 (en) 2019-03-27 2024-05-21 Gyrus Acmi, Inc. Surgical protection system
WO2023020241A1 (fr) * 2021-08-16 2023-02-23 The University Of Hong Kong Dispositif sans rayonnement et sans contact qui localise avec précision plusieurs implants dans le corps d'un patient

Also Published As

Publication number Publication date
SE9403193D0 (sv) 1994-09-22
EP0955879A1 (fr) 1999-11-17
SE9403193L (sv) 1996-03-23
JPH10505776A (ja) 1998-06-09

Similar Documents

Publication Publication Date Title
WO1996008999A1 (fr) Utilisation d'un implant a proprietes magnetiques pour determiner la position d'un patient
EP2264475B1 (fr) Determination magnetique de position et d'orientation
Seiler et al. A novel tracking technique for the continuous precise measurement oftumour positions in conformal radiotherapy
US6230038B1 (en) Imaging of internal structures of living bodies by sensing implanted magnetic devices
US5944023A (en) Systems and methods for determining the location of an implanted device including a magnet
US5622187A (en) Method and apparatus for patient positioning for radiation therapy
US20190192044A1 (en) System and method for magnetic occult lesion localization and imaging
US6611700B1 (en) Method and apparatus for positioning a body for radiation using a position sensor
US6359959B1 (en) System for determining target positions in the body observed in CT image data
EP0809465B1 (fr) Fixation repetee destinee a une procedure stereotaxique sans cadre
US4134395A (en) Method of using magnetic fields to conduct a screening diagnostic examination
US20020091314A1 (en) Method for breath compensation in radiation therapy
AU6031296A (en) Magnetic location system with adaptive feedback control
WO2005041835A3 (fr) Systeme et procede pour l'etalonnage et le positionnement de table de traitement de radiotherapie
US20030216632A1 (en) Ferromagnetic sensing method and apparatus
EP3509485A1 (fr) Système et procédé de localisation et d'imagerie de lésion occulte magnétique
EP1830704A2 (fr) Marqueur pour la determination de position avec un procede magnetique
EP1372479A1 (fr) Determination de la position d'une sonde chirurgicale
RU2130759C1 (ru) Способ наведения стереотаксического инструмента на целевую точку
Lennernäs Patient positioning using magnetic implants and magnetic field sensors
US20200015913A1 (en) Flexible circuit bearing a coil having a non-ferrous core
AU746410B2 (en) Magnetic determination of position and orientation
CA2427503A1 (fr) Appareil et methode de detection ferromagnetique

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 1995933014

Country of ref document: EP

ENP Entry into the national phase

Ref country code: US

Ref document number: 1997 793926

Date of ref document: 19970321

Kind code of ref document: A

Format of ref document f/p: F

WWP Wipo information: published in national office

Ref document number: 1995933014

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1995933014

Country of ref document: EP

点击 这是indexloc提供的php浏览器服务，不要输入任何密码和下载