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1. (WO1979000065) APPARATUS FOR PANORAMIC RADIOGRAPHY
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1979/000065 International Application No.: PCT/FR1978/000011
Publication Date: 22.02.1979 International Filing Date: 18.07.1978
IPC:
A61B 6/14 (2006.01)
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
6
Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
14
Applications or adaptations for dentistry
Applicants:
Inventors:
Priority Data:
772288526.07.1977FR
Title (EN) APPARATUS FOR PANORAMIC RADIOGRAPHY
(FR) APPAREIL POUR RADIOGRAPHIE PANORAMIQUE
Abstract:
(EN) Apparatus for panoramic radiography of a curved surface such as the dental arch, comprising an oscillating arm (17) that sustains an X-ray source (18) at one end and a film-holder at the other end. In the apparatus of the invention the arm (17) is mounted idle on a shaft (16), called tertiary shaft, that a mechanism forces to move according to an elliptic trajectory adapted to the jaw of the patient. The arm is further driven rotatingly around the tertiary shaft by a mechanism (pin 11, groove 24) connected to the primary shaft (4) of the mechanism generating the ellipse so as to be always orthogonal to the ellipse. The film (19) is driven in such a manner that it avoids the deformations of the panoramic projection; the ellipse is described at variable speed to compensate for the absorption due to the cervical column.
(FR) Appareil pour radiographie panoramique d"une surface courbe telle que l"arcade dentaire, comportant un bras oscillant (17) supportant une source (18) de rayons X a une extremite et un porte film (20) a l"autre. Dans l"appareil de l"invention le bras (17) est monte fou sur un arbre (16), dit arbre tertiaire, qu"un mecanisme oblige a se deplacer le long d"une trajectoire elliptique adaptee a la machoire du patient. Le bras est de plus entraine en rotation autour de l"arbre tertiaire par un mecanisme (ergot 11, rainure 24) lie a l"arbre primaire (4) du mecanisme engendrant l"ellipse de facon a etre toujours orthogonal a l"ellipse. Le film (19) est entraine de facon a eviter des deformations de la projection panoramique; l"ellipse est decrite a vitesse variable pour compenser l"absorption due a la colonne cervicale.
Designated States:
Publication Language: French (FR)
Filing Language: French (FR)