X-Ray tomography table having a virtual fulcrum arm pivot
US4450575A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 17, 1983 |
| Grant date | May 22, 1984 |
| Priority date | — |
| Expiry date | Jan 17, 2003 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/587
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
X-ray apparatus for tomography and other procedures. For tomography, a column is translated longitudinally parallel to the patient supporting table top. An x-ray tube is supported on the column above the table top for angulating about a laterally extending axis at a constant elevation on the column. A bucky carriage for containing a film is mounted under the top for moving longitudinally. A fulcrum arm is pivotally connected at one end directly to the bucky carriage for pivoting on a laterally extending axis lying on the film plane. The other or upper end of the arm is connected to the x-ray tube for angulating it so the central ray of the x-ray beam is always directed to the center of the film during column translation. The upper end of the fulcrum arm is slidable relative to the x-ray tube angulation axis. An extensible and contractible link means below the bucky carriage pivotally connects at its upper end to the carriage and at its lower end to the column for swinging about a lateral axis that is vertically aligned with the x-ray tube axis. The link means pivots about a lateral axis on a support member whose elevation is adjustable relative to the film plane. The elevation of t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.