Set of x-ray film holders for taking X-ray exposures of an entir

Details Set of x-ray film holders for taking X-ray exposures of an entir Set of x-ray film holders for taking X-ray exposures of an entir

1990-05-08

1991-08-27

Westin, Edward P.

X-ray or gamma ray systems or devices

Photographic detector support

Dental

378168, 378174, 378181, 378187, 378205, A61B 614, G03B 4202

Patent

active

050440098

ABSTRACT:
The set of X-ray film holders for taking X-ray exposures of an entire tooth consists of a holder for the side teeth and a holder for the front teeth, each of the holders comprising a resilient clip for the X-ray film, a formed bite portion and a cranked indicator rod extending perpendicularly to the film plane for adjusting the central X-ray beam orthogonally to the film plane. The film clip is attached to the bite portion in such a manner that it is pivotable by 360.degree. and may be locked in the plane which is formed by the indicator rod with its cranked portion. Except for special X-ray tubes, it is useful to have a centering aid for the central X-ray beam. To this end, an index having pointer means is movably disposed on the indicator rod, guiding means being provided on the indicator rod and on the tube of the index in order to bring the pointer means into the correct position according to whether the X-ray film is in its upward or downward position. Such a set of X-ray film holders enables exact aligning of all X-ray tubes with the currently used X-ray films for exposures of all teeth.

REFERENCES:
patent: Re25773 (1985-05-01), Medwedeff et al.
patent: 3003062 (1961-10-01), Updegrave
patent: 3304422 (1967-02-01), Medwedeff et al.
patent: 4057732 (1977-11-01), Klauser
patent: 4251732 (1981-02-01), Fried
patent: 4295050 (1981-10-01), Linden
patent: 4507798 (1985-03-01), Welander

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