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1. WO2020109788 - APPARATUS FOR X-RAY CT SCANNING

Publication Number WO/2020/109788
Publication Date 04.06.2020
International Application No. PCT/GB2019/053350
International Filing Date 27.11.2019
IPC
A61B 6/04 2006.01
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 6/00 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
B25J 9/04 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; HANDLES FOR HAND IMPLEMENTS; WORKSHOP EQUIPMENT; MANIPULATORS
JMANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
9Programme-controlled manipulators
02characterised by movement of the arms, e.g. cartesian co-ordinate type
04by rotating at least one arm, excluding the head movement itself, e.g. cylindrical co-ordinate type or polar co-ordinate type
A61B 6/03 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
02Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
03Computerised tomographs
A61B 6/10 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
10Application or adaptation of safety means
CPC
A61B 6/032
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
02Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
03Computerised tomographs
032Transmission computed tomography [CT]
A61B 6/035
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
02Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
03Computerised tomographs
032Transmission computed tomography [CT]
035Mechanical aspects of CT
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 6/107
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
10Application or adaptation of safety means
107Protection against radiation, e.g. shielding
A61B 6/4429
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
44Constructional features of the device for radiation diagnosis
4429related to the mounting of source units and detector units
A61B 6/4452
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
44Constructional features of the device for radiation diagnosis
4429related to the mounting of source units and detector units
4452the source unit and the detector unit being able to move relative to each other
Applicants
  • HALLMARQ VETERINARY IMAGING LTD [GB]/[GB]
Inventors
  • BOLAS, Nicholas Martin
  • LODEIRO, Eduardo Pallas
  • MARTINEZ, Laura Moliner
  • PODOLYAK, Giedre
  • KURN, Paul Michael
  • BARNETT, James Richard
Agents
  • BARON WARREN REDFERN
Priority Data
1819349.028.11.2018GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) APPARATUS FOR X-RAY CT SCANNING
(FR) APPAREIL POUR TOMODENSITOMÉTRIE À RAYONS X
Abstract
(EN)
Apparatus for x-ray CT scanning of an object comprises an x-ray generator (1) mounted on a first support (3) on an outer ring (4) and an x-ray detector (2) mounted on a second support (10) on an inner ring (11), and a drive mechanism arranged to rotate the outer and inner rings (4, 11). The outer and inner rings have a first common axis of rotation and the diameter of the outer ring (4) is greater than the diameter of the inner ring (11). The first and second supports (3, 10) are positioned diametrically opposite each other with the second support (10) on the far side of the inner ring (11) with respect to the position of the outer ring (4). The inner surface of the outer ring (4) and the outer surface of the inner ring (11) are formed with teeth, and the drive mechanism includes a gearing arrangement connecting the outer and inner rings (4, 11). The gearing arrangement comprises first and second toothed rotary gears (14, 16) fixed so as to rotate together about a second common axis of rotation, the first rotary gear (14) having a greater diameter than the second rotary gear (16). The first rotary gear (14) interengages with the teeth of the outer ring (4) and the second rotary gear (16) interengages with the teeth of the inner ring (11) via a third toothed rotary gear or a toothed drive belt (18). The ratio of the number of teeth on the outer and inner rings (4, 11) are the same as the ratio of the number of teeth on the first and second rotary gears (14, 16) so that the outer and inner rings (4, 11) rotate at substantially the same angular speed in the same direction, whereby x-ray radiation emitted by the x-ray generator (1) is directed towards the x-ray detector (2) whilst the first and second supports (3, 10), on which the x-ray generator (1) and x-ray detector (2) are respectively mounted, are moving along respective first and second annular concentric paths defined by the outer and inner rings (4, 11).
(FR)
L'invention concerne un appareil de tomodensitométrie à rayons X d'un objet, comprenant un générateur de rayons X (1) monté sur un premier support (3) sur un anneau externe (4) et un détecteur de rayons X (2) monté sur un second support (10) sur un anneau interne (11), et un mécanisme d'entraînement agencé pour faire tourner les anneaux externe et interne (4, 11). Les anneaux externe et interne ont un premier axe de rotation commun et le diamètre de l'anneau externe (4) est supérieur au diamètre de l'anneau interne (11). Les premier et second supports (3, 10) sont positionnés diamétralement opposés l'un à l'autre avec le second support (10) sur le côté éloigné de l'anneau interne (11) par rapport à la position de l'anneau externe (4). La surface interne de l'anneau externe (4) et la surface externe de l'anneau interne (11) sont formées avec des dents, et le mécanisme d'entraînement comprend un agencement d'engrenage reliant les anneaux externe et interne (4, 11). L'agencement d'engrenage comprend des premier et deuxième engrenages rotatifs dentés (14, 16) fixés de manière à tourner ensemble autour d'un second axe de rotation commun, le premier engrenage rotatif (14) ayant un diamètre supérieur à celui du deuxième engrenage rotatif (16). Le premier engrenage rotatif (14) s'engrène avec les dents de l'anneau externe (4) et le deuxième engrenage rotatif (16) s'engrène avec les dents de l'anneau interne (11) par l'intermédiaire d'un troisième engrenage rotatif denté ou d'une courroie d'entraînement dentée (18). Le rapport du nombre de dents sur les anneaux externe et interne (4, 11) est le même que le rapport du nombre de dents sur les premier et deuxième engrenages rotatifs (14, 16) de sorte que les anneaux externe et interne tournent sensiblement à la même vitesse angulaire dans la même direction, ce par quoi un rayonnement de rayons X émis par le générateur de rayons X (1) est dirigé vers le détecteur de rayons X (2) tandis que les premier et second supports (3, 10), sur lesquels le générateur de rayons X (1) et un détecteur de rayons X (2) sont respectivement montés, se déplacent le long de premier et second trajets concentriques annulaires respectifs définis par les anneaux externe et interne (4, 11).
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