X-ray or gamma ray systems or devices – Specific application – Dental panoramic
Patent
1985-12-23
1987-09-15
Fields, Carolyn E.
X-ray or gamma ray systems or devices
Specific application
Dental panoramic
378 38, 378180, 378196, 378170, H05G 160, G03B 2304, A61B 604
Patent
active
046944788
ABSTRACT:
An apparatus for orthoradial panoramic tomography comprises a radiation source for motion relative to a point of reference; a cassette means also for motion relative to said point of reference; a support for holding said radiation source and said cassette relative to said point of reference; a head positioning means including a first or intraoral device and a second or extraoral device for positioning the patient's head relative to said point of reference; a carriage connected with said support 11 and including a grip; a substantially vertical column for slidingly holding said carriage in a vertically defined position and having a vertical axis distanced from said point of reference; the apparatus further comprises a foot positioning means having a substantially horizontal reference face for defining a vertical distance from said horizontal reference face to said point of reference and a substantially vertical reference face for maintaining toe and/or heel portions of the patient's feet in a predetermined position; a distancing means is provided for maintaining said at least one vertical reference face at a reproducible horizontal distance from said vertical axis of said column; and means is arranged for determining and reproducibly setting a vertical distance between said horizontal reference face and said point of reference; said foot positioning means is arranged relative to said point of reference and to said vertical column axis for maintaining said patient, when standing on said foot positioning means and engaging said gip, in a reproducible and inclined position in which his longitudinal body axis relative to said vertical column axis is at an angle (.alpha.) sufficient to cause an isotonic strain of brachial and dorsal muscles.
REFERENCES:
patent: 2353969 (1944-07-01), Powers
patent: 3514606 (1967-05-01), Rabey
patent: 4599739 (1986-07-01), Nishikawa et al.
Fields Carolyn E.
Hynds Joseph A.
Kleeman Werner W.
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