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1. CA2218093 - SYSTEME DE POSITIONNEMENT EN PROFONDEUR ET D'ORIENTATION D'UN CATHETER

Office
Canada
Numéro de la demande 2218093
Date de la demande 11.04.1996
Numéro de publication 2218093
Date de publication 17.10.1996
Type de publication A1
CIB
A61B 5/06
ANÉCESSITÉS COURANTES DE LA VIE
61SCIENCES MÉDICALE OU VÉTÉRINAIRE; HYGIÈNE
BDIAGNOSTIC; CHIRURGIE; IDENTIFICATION
5Mesure servant à établir un diagnostic; Identification des individus
06Dispositifs autres que ceux à radiation, pour détecter ou localiser les corps étrangers
G01V 3/10
GPHYSIQUE
01MÉTROLOGIE; TESTS
VGÉOPHYSIQUE; MESURE DE LA GRAVITATION; DÉTECTION DES MASSES OU OBJETS; MARQUES D'IDENTIFICATION
3Prospection ou détection électrique ou magnétique; Mesure des caractéristiques du champ magnétique de la terre, p.ex. de la déclinaison ou de la déviation
08fonctionnant au moyen de champs magnétiques ou électriques produits ou modifiés par les objets ou les structures géologiques, ou par les dispositifs de détection
10en utilisant des cadres inducteurs
A61B 19/00
ANÉCESSITÉS COURANTES DE LA VIE
61SCIENCES MÉDICALE OU VÉTÉRINAIRE; HYGIÈNE
BDIAGNOSTIC; CHIRURGIE; IDENTIFICATION
19Instruments, outillage ou accessoires pour la chirurgie ou le diagnostic non couverts par l'un des groupes A61B1/-A61B18/159
CPC
A61B 5/06
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
06Devices, other than using radiation, for detecting or locating foreign bodies
A61B 5/062
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
06Devices, other than using radiation, for detecting or locating foreign bodies
061Determining 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
062using magnetic field
A61B 34/20
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
34Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
20Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
A61B 34/25
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
34Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
25User interfaces for surgical systems
A61B 2034/107
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
34Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
10Computer-aided planning, simulation or modelling of surgical operations
107Visualisation of planned trajectories or target regions
A61B 2034/2051
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
34Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
20Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
2046Tracking techniques
2051Electromagnetic tracking systems
Déposants NAVION BIOMEDICAL CORPORATION
Inventeurs SHAPIRO, ALAN R.
KAY, DONALD A.
Données relatives à la priorité 08420020 11.04.1995 US
Titre
(EN) CATHETER DEPTH, POSITION AND ORIENTATION LOCATION SYSTEM
(FR) SYSTEME DE POSITIONNEMENT EN PROFONDEUR ET D'ORIENTATION D'UN CATHETER
Abrégé
(EN) A system (10) for externally locating a sensor in tissue, comprising an external probe including at least first and second electromagnetic output coils (12) with non-parallel longitudinal axes; and output coil (2) driver for alternately energizing the first and second output coils, for generating a time-varying magnetic field which penetrates the patient's skin (7); a sensor coil (30), having a longitudinal axis, for developing an induced electrical voltage in response to the time-varying magnetic field; a distance determinator, responsive to the induced voltage from the sensor coil (30), for determining from the induced voltage, the distance between the output coils (12) and the sensor coil (30), independently of the relative angle, in a horizontal plane, between the sensor coil (30) longitudinal axis, and the longitudinal axes of the output coils (12); and a direction determinator for determining and displaying the direction, in the horizontal plane, in which the sensor coil (30) longitudinal axis is pointing.