Irradiating filament and method of making same
First Claim
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1. A filament for irradiating a living body, comprising a core of radiation emitting material, the core being clad in a casing of protective material, wherein the materials forming the core and casing differ from one another and the materials forming the core and protective casing have a grain size equal to or less than 30 μ
- m.
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Abstract
A filament for irradiating a living body has a core material capable of irradiating radioactive radiation clad in a tubular casing of protective material different from the material forming the core. The materials forming the core and casing have a purity not less than 99.5 atomic percent and a grain size not exceeding 30 μm and the outer diameter of the filament is not less than 80 μm.
115 Citations
30 Claims
- 1. A filament for irradiating a living body, comprising a core of radiation emitting material, the core being clad in a casing of protective material, wherein the materials forming the core and casing differ from one another and the materials forming the core and protective casing have a grain size equal to or less than 30 μ
-
16. An irradiating filament comprising:
a first material adapted to emit radiation and a second material covering the first material wherein the first and second material each have a grain size equal to or less than about 30 μ
m.
- 17. A clad composite filament comprising a core and a case, the core comprising a radiation emitting material and the case comprising a biocompatible material which is different than the radiation emitting material, wherein both of the radiation emitting material and the biocompatible material have a grain size which is less than or equal to 30 μ
Specification