X-Ray drive apparatus
US4363128A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1980 |
| Grant date | Dec 7, 1982 |
| Priority date | — |
| Expiry date | Sep 29, 2000 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/447
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An X-ray apparatus has a moveable support on which are slidingly mounted an X-ray tube, an image intensifier and a film holder, these radiation components defining a common radiation axis. By including a reversible motor connected to a system of clutch operated drive linkages the X-ray tube and receptors can be selectively and reciprocally moved along the radiation axis in either an independent or interdependent manner so as to preserve a radiologically desirable Source to Image Distance (SID) while simultaneously accommodating other X-ray examination requirements such as patient comfort, safety, and desired examining position. The X-ray tube is attached to a lever arm and the image intensifier and film holder are each moved by respective cables travelling around respective drive pulleys and idler pulleys. Both the X-ray tube and receptors are closely counterbalanced by counterweights respectively moved by the cables. When the drive motor is appropriately engaged, a connecting shaft, belt or sprocket chain transmits the motor's force selectively through intermediate, force limited, slip clutches to the appropriate X-ray components. PAC BACKGROUND OF THE INVENTION
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.