Interstitial x-ray needle

Details Interstitial x-ray needle Interstitial x-ray needle

A - Human Necessities

61

N

A61N 5/10 (2006.01) H01J 35/14 (2006.01) H01J 35/32 (2006.01)

Patent

CA 2090210

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 dis- posed at a tip of the other end of the tube for converting emitted electrons into X- rays; 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.

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