Patent US3679901A successfully refreshed from Google Patents.
US3679901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for simultaneous radiographical and photographical examinations on the eye and the orbital region
Assignee: Incentive Research and Development AB
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Filing: 1970-10-05
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Granted: 1972-07-25
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Expires: 1990-10-05
Abstract
Abstract The invention concerns a device for the localization of intraocular foreign bodies and for exophthalmometry. The device can be mounted on any standard model of an X-ray stand usable for skull examination and makes it possible to take simultaneously a radiograph and a photograph of the orbital region of the patient. The photograph and the radiograph are obtained on transparent film material and with exactly the same magnification. The photograph and the radiograph are positioned upon each other in a correct relative position and viewed together in penetrating light. The combined radiograph and photograph reveales both the skeleton and the soft parts as well as any foreign radiopaque bodies in the orbital region and the anterior part of the skull, wherefore the position of any such foreign body can be easily determined or any exophthalmos can be easily detected and accurately measured respectively.
Inventors
- 👤 Hugo Bogren
- 👤 Gosta Elfstrom
- 👤 Bjorn Tengroth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:01
CPC Classifications
A; A61; A61B; A61B3/00; A61B3/10; A61B6/00; A61B6/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
255 words
A device for a simultaneous radiographical and photographical examination of the eye, the orbital region and adjacent parts of the skull of a patient, in particular for the purpose of localizing foreign bodies in the eye or the orbit or for exophthalmometry, comprising an apparatus casing adapted to be mounted on the X-ray film holder stage of a standard type X-ray stand adapted for skull examination, said apparatus casing being provided with oppositely positioned X-ray radiation windows in the wall of the casing facing said stage and in the opposite upper wall of the casing respectively, at least the X-ray radiation window in said upper wall of the casing being transparent also to optical radiation, an optical mirror mounted inside said apparatus casing between said opposite windows so as to be oblique relative to the direction of the X-ray radiation and to have its reflecting surface facing the X-ray radiation window in said upper wall of the casing, a photographical camera system including a camera optics with an associated shutter mechanism mounted in said apparatus casing and a holder for a photographical film, said camera system having its optical axis directed towards said optical mirror so as to be deflected thereby out through the window in said upper wall of said apparatus casing in a direction substantially parallel to the Xray radiation, and a cephalostat device supported by said apparatus casing for fixing the head of the patient in a desired position in front of the window in said upper wall of said apparatus casing.
Claim 2
Independent Claim
255 words
A device for a simultaneous radiographical and photographical examination of the eye, the orbital region and adjacent parts of the skull of a patient, in particular for the purpose of localizing foreign bodies in the eye or the orbit or for exophthalmometry, comprising an apparatus casing adapted to be mounted on the X-ray film holder stage of a standard type X-ray stand adapted for skull examination, said apparatus casing being provided with oppositely positioned X-ray radiation windows in the wall of the casing facing said stage and in the opposite upper wall of the casing respectively, at least the X-ray radiation window in said upper wall of the casing being transparent also to optical radiation, an optical mirror mounted inside said apparatus casing between said opposite windows so as to be oblique relative to the direction of the X-ray radiation and to have its reflecting surface facing the X-ray radiation window in said upper wall of the casing, a photographical camera system including a camera optics with an associated shutter mechanism mounted in said apparatus casing and a holder for a photographical film, said camera system having its optical axis directed towards said optical mirror so as to be deflected thereby out through the window in said upper wall of said apparatus casing in a direction substantially parallel to the Xray radiation, and a cephalostat device supported by said apparatus casing for fixing the head of the patient in a desired position in front of the window in said upper wall of said apparatus casing.
Claim 3
Dependent Claim
26 words
A device as claimed in claim 1, comprising an electronic photo-flash device mounted inside said apparatus casing so as to emit its light towards said mirror.
Claim 4
Dependent Claim
53 words
A device as claimed in claim 1, wherein said optical camera system is adapted to produce a photograph of an object positioned in front of the window in said upper wall of said apparatus casing with the same degree of magnification as the radiograph of the same object produced by said X-ray stand.
Claim 5
Dependent Claim
37 words
A device as claimed in claim 2, comprising means responsive to a control signal from a control unit of said X-ray stand for operating said photo-flash means and said shutter mechanism immediately after a completed X-ray exposure.
Claim 6
Dependent Claim
21 words
A device as claimed in claim 1, wherein said holder for the photographic film is removably attached to said apparatus casing.
Claim 7
Dependent Claim
21 words
A device as claimed in claim 1, wherein said holder for the photographic film is adapted for a direct-developing film material.
References Cited (Backward Citations)
US2474421A
Cited
US3514606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |