US3803418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
X-ray device for investigation of skulls
Assignee: Siemens AG
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Filing: 1972-07-06
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Granted: 1974-04-09
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Expires: 1992-07-06
Abstract
Abstract An X-ray device for investigation of skulls has a support for the patient and an X-ray tube - image layer unit which is movable relatively thereto in such manner that the object being examined, namely a skull, can be introduced into the ray flow and fixed. The unit consists, on the one hand, of a U-shaped swingable arm having one arm portion carrying an X-ray tube with a light sight provided with indicating markings extending in the longitudinal direction of the support and transversely thereto, which pass through the central ray and can be projected upon the object being examined. The other arm portion has an image layer carrier. The units carried by the two arm portions are so directed toward each other that the central ray of the X-ray tube lies in the middle perpendiculars of the image layer. The unit includes, on the other hand, a U-shaped stand having one leg carrying the swingable arm which is mounted substantially in its center of gravity for rotation about a horizontal axis. The horizontal leg is swingably connected with a pivot bearing for rotation about a vertical bearing axis. These connections are such that the focus of the X-ray tube and the center of the image layer move upon outer surfaces of imaginary concentrical spheres. The present invention is particularly characterized by the provision of a light sight mounted in the rotary axis of the swingable arm and directed toward the object being examined for fixing permanent initial positions of the object being examined to the device (zero position) and for the linear projection of vertical and horizontal sections extending through the center of imaginary spheres upon the outer surface of the object being examined. The present invention also includes the provision of an X-ray tube image layer unit and indicating means combined with the patient support for setting quantitatively fixable changes of setting positions relatively to the zero position.
Inventors
- 👤 L Holstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:03
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/08; A61B6/04; A61B6/0487; A61B6/44; A61B6/4429; A61B6/4464; A61B6/50; A61B6/501
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
208 words
An X-ray device for investigation of skulls, comprising in combination with a patient support adapted to carry the object to be examined, a swingable U-shaped arm, an X-ray tube carried by a portion of said arm, a diaphragm adjustably connected with said X-ray tube, a film cassette adjustably mounted upon another portion of said arm, a bearing supporting said arm for movement about a horizontal axis between said X-ray tube and said cassette, a light sight connected with said bearing and directed toward said patient support, said diaphragm and said casseTte being directed toward each other, the central ray of said X-ray tube passing through the center of said cassette, means supporting said arm for movement about a vertical axis, the focus of said X-ray tube and the center of said cassette being movable upon surfaces of imaginary concentrical spheres, said light sight having vertical and horizontal slits, whereby ray projections extending through said slits may form imaginary vertical and horizontal sectional surfaces extending through the center of said imaginary spheres and upon the surface of the object to be examined, and indicating means connected with said X-ray tube, said cassette and said patient support for setting quantitatively fixable changes of setting positions relatively to a zero position.
Claim 2
Dependent Claim
208 words
An X-ray device for investigation of skulls, comprising in combination with a patient support adapted to carry the object to be examined, a swingable U-shaped arm, an X-ray tube carried by a portion of said arm, a diaphragm adjustably connected with said X-ray tube, a film cassette adjustably mounted upon another portion of said arm, a bearing supporting said arm for movement about a horizontal axis between said X-ray tube and said cassette, a light sight connected with said bearing and directed toward said patient support, said diaphragm and said casseTte being directed toward each other, the central ray of said X-ray tube passing through the center of said cassette, means supporting said arm for movement about a vertical axis, the focus of said X-ray tube and the center of said cassette being movable upon surfaces of imaginary concentrical spheres, said light sight having vertical and horizontal slits, whereby ray projections extending through said slits may form imaginary vertical and horizontal sectional surfaces extending through the center of said imaginary spheres and upon the surface of the object to be examined, and indicating means connected with said X-ray tube, said cassette and said patient support for setting quantitatively fixable changes of setting positions relatively to a zero position.
Claim 3
Dependent Claim
34 words
A device in accordance with claim 1, wherein said light sight is a double line projecting light sight for linear projection of a vertical and horizontal projection plane upon the object to be examined.
Claim 4
Dependent Claim
30 words
A device in accordance with claim 1, wherein said patient support comprises a carrying table, means shifting said table longitudinally and transversely, and indicating means connected with the last-mentioned means.
Claim 5
Dependent Claim
15 words
A device in accordance with claim 3, comprising means adjusting the height of said table.
Claim 6
Dependent Claim
19 words
A device in accordance with claim 3, comprising a rail and means guiding said patient support upon said rail.
Claim 7
Dependent Claim
43 words
A device in accordance with claim 3, comprising a transparent head support extending beyond one end of said table and means connecting said head support with said end of the table and adjusting the height of said head support relatively to said table.
Claim 8
Dependent Claim
25 words
A device in accordance with claim 3, comprising a central column supporting said table, said table being swingable about the central axis of said column.
Claim 9
Dependent Claim
25 words
A device in accordance with claim 1, comprising means connected with said U-shaped arm for telescopic height adjustment of said portions of the U-shaped arm.
Claim 10
Dependent Claim
27 words
A device in accordance with claim 8, comprising means connected with said other portion of the arm for shifting it in the direction of the central ray.
Claim 11
Dependent Claim
32 words
A device in accordance with claim 1, comprising motors connected with said indicating means for carrying out said changes of setting positions and a programmed actuating device operatively connected with said motors.
Claim 12
Dependent Claim
32 words
A device in accordance with claim 10, wherein said programmed actuating device has means setting the X-ray tube voltage, X-ray tube current and exposure time on the basis of the programmed data.
Claim 13
Dependent Claim
281 words
An X-ray device for investigation of skulls, comprising in combination with a patient support adapted to carry the object to be examined, a swingable U-shaped arm, an X-ray tube carried by a portion of said arm, a diaphragm adjustably connected with said X-ray tube, a film cassette adjustably mounted upon another portion of said arm, a bearing supporting said arm for movement about a horizontal axis between said X-ray tube and said cassette, a light sight connected with said bearing and directed toward said patient support, said light sight being a double line projecting light sight for linear projection of a vertical and horizontal projection plane upon the object to be examined, said diaphragm and said cassette being directed toward each other, the central ray of said X-ray tube passing through the center of said cassette, means supporting said arm for movement about a vertical axis, the focus of said X-ray tube and the center of said cassette being movable upon surfaces of imaginary concentrical spheres, said light sight having vertical and horizontal slits, whereby ray projections extending through said slits may form imaginary vertical and horizontal sectional surfaces extending through the center of said imaginary spheres and upon the surface of the object to be examined, indicating means connected with said X-ray tube, said cassette and said patient support for setting quantitatively fixable changes of settiNg positions relatively to a zero position, motors connected with said indicating means for carrying out said changes of setting positions and a programmed actuating device operatively connected with said motors, said programmed actuating device having means setting the X-ray tube voltage, X-ray tube current and exposure time on the basis of the programmed data.
Claim 14
Dependent Claim
281 words
An X-ray device for investigation of skulls, comprising in combination with a patient support adapted to carry the object to be examined, a swingable U-shaped arm, an X-ray tube carried by a portion of said arm, a diaphragm adjustably connected with said X-ray tube, a film cassette adjustably mounted upon another portion of said arm, a bearing supporting said arm for movement about a horizontal axis between said X-ray tube and said cassette, a light sight connected with said bearing and directed toward said patient support, said light sight being a double line projecting light sight for linear projection of a vertical and horizontal projection plane upon the object to be examined, said diaphragm and said cassette being directed toward each other, the central ray of said X-ray tube passing through the center of said cassette, means supporting said arm for movement about a vertical axis, the focus of said X-ray tube and the center of said cassette being movable upon surfaces of imaginary concentrical spheres, said light sight having vertical and horizontal slits, whereby ray projections extending through said slits may form imaginary vertical and horizontal sectional surfaces extending through the center of said imaginary spheres and upon the surface of the object to be examined, indicating means connected with said X-ray tube, said cassette and said patient support for setting quantitatively fixable changes of settiNg positions relatively to a zero position, motors connected with said indicating means for carrying out said changes of setting positions and a programmed actuating device operatively connected with said motors, said programmed actuating device having means setting the X-ray tube voltage, X-ray tube current and exposure time on the basis of the programmed data.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-08 | 1977-10-08 | 1978-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-08 | 1981-10-08 | 1982-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-08 | 1985-10-08 | 1986-04-09 | $7700.00 | Window Closed / Lapsed |