Patent ID: 6347443
Filing Date: 2002-02-19
Classification: A61K,A61N,A61P,G21G,Y10T

Abstract:
A method of making a sealed double-walled tubular precursor device adapted to be transmuted into a brachytherapy device and having a lumen therethrough for interstitial implantation of radiation-emitting material within a living body, said method comprising:depositing a layer of isotope on an external surface of an inner tubular element, said inner tubular element having a first open end, a second open end, and a lumen continuous with said first open end and said second open end; positioning said inner tubular element within an outer tubular element, said outer tubular element having a first open end, a second open end, and a lumen continuous with said first open end of the outer tubular element and said second open end of the outer tubular element, said inner tubular element being of substantially equal length to said outer tubular element, wherein said inner tubular element is disposed substantially centrally within said outer tubular element and spaced apart therefrom; and sealingly joining said first open end of said inner tubular element and said first open end of said outer tubular element, and sealingly joining said second open end of said inner tubular element and said second open end of said outer tubular element so at to form said sealed double-walled tubular precursor device.