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1. WO2010097697 - A METHOD FOR POSITIONING AN INSTRUMENT

Publication Number WO/2010/097697
Publication Date 02.09.2010
International Application No. PCT/IB2010/000410
International Filing Date 01.03.2010
IPC
A61B 6/04 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
04Positioning of patients; Tiltable beds or the like
A61B 8/00 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
8Diagnosis using ultrasonic, sonic or infrasonic waves
CPC
A61B 2017/00725
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
17Surgical instruments, devices or methods, e.g. tourniquets
00681Aspects not otherwise provided for
00725Calibration or performance testing
A61B 2090/364
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
90Instruments, 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
36Image-producing devices or illumination devices not otherwise provided for
364Correlation of different images or relation of image positions in respect to the body
A61B 2090/376
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
90Instruments, 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
36Image-producing devices or illumination devices not otherwise provided for
37Surgical systems with images on a monitor during operation
376using X-rays, e.g. fluoroscopy
A61B 6/04
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
04Positioning of patients; Tiltable beds or the like
A61B 6/12
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
12Devices for detecting or locating foreign bodies
A61B 6/4441
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
44Constructional features of apparatus for radiation diagnosis
4429related to the mounting of source units and detector units
4435the source unit and the detector unit being coupled by a rigid structure
4441the rigid structure being a C-arm or U-arm
Applicants
  • STELLENBOSCH UNIVERSITY [ZA]/[ZA] (AllExceptUS)
  • SCHEFFER, Cornelius [ZA]/[ZA] (UsOnly)
  • CONRADIE, Jean-Pierre [ZA]/[ZA] (UsOnly)
  • ZARRABI, Amir, David [ZA]/[ZA] (UsOnly)
  • SCHREVE, Kristiaan [ZA]/[ZA] (UsOnly)
Inventors
  • SCHEFFER, Cornelius
  • CONRADIE, Jean-Pierre
  • ZARRABI, Amir, David
  • SCHREVE, Kristiaan
Agents
  • VON SEIDELS
Priority Data
2008/0751328.02.2009ZA
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) A METHOD FOR POSITIONING AN INSTRUMENT
(FR) PROCÉDÉ DE POSITIONNEMENT D'UN INSTRUMENT
Abstract
(EN) A method of positioning a surgical instrument is provided which includes mapping a volume adjacent an operating table by taking mapping images from two orientations of a calibration object which includes a 3- dimensional array of radio opaque markers in a known configuration. A patient is positioned on the operating table with a patient target area within a mapped volume, and an instrument holder carrying a known configuration of radio opaque markers positioned adjacent the target area. Further fluoroscopic target images of the target area and instrument holder are obtained from the two orientations and the target area then reconstructed in 3-dimensions by comparing the target images to the mapping images. An instrument holder orientation is then calculated from the reconstruction.
(FR) L'invention porte sur un procédé de positionnement d'un instrument chirurgical qui comprend le mappage d'un volume adjacent à une table d'opération par prise d'images de mappage à partir de deux orientations d'un objet d'étalonnage comportant un réseau tridimensionnel de marqueurs radio-opaques dans une configuration connue. Un patient est positionné sur la table d'opération avec une zone cible de patient dans un volume mappé, et un porte-instrument portant une configuration connue de marqueurs radio-opaques est positionné adjacent à la zone cible. D'autres images cibles fluoroscopiques de la zone cible et du porte-instrument sont obtenues à partir des deux orientations et la zone cible est ensuite reconstruite en trois dimensions par comparaison des images cibles aux images de mappage. Une orientation du porte-instrument est ensuite calculée à partir de la reconstruction.
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