Interstitial X-ray needle
US5165093A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1992 |
| Grant date | Nov 17, 1992 |
| Priority date | — |
| Expiry date | Mar 23, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2235/1262
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An interstitial X-ray needle includes an elongated X-ray tube coupled to an electron emitter at one end of the tube, with a converter element being disposed at a tip of the other end of the tube for converting emitted electrons into X-ray; a solenoid coil wound around the tube for providing a magnetic field that confines the emitted electrons within a narrow beam; an elongated outer casing enclosing the tube and coil; and a pipe coaxially disposed between the casing and the tube for defining an inner annular flow chamber between the tip of the tube and a coolant inlet in the casing and an outer annular flow chamber between the tip of the tube and a coolant outlet in the casing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.