Patent ID: 6163947
Filing Date: 2000-12-26
Classification: A61K,A61N,A61P,G21G,Y10T

Abstract:
A method of making a sealed double-walled tubular brachytherapy device having a lumen therethrough for interstitial implantation of radiation-emitting material within a living body, said method comprising:fabricating an inner tubular element, said inner tubular element being fabricated to have an external surface, a lumenal surface, a first open end, a second open end, and a lumen continuous with said first open end and said second open end;fabricating an outer tubular element, said outer tubular element being fabricated to have a first open end, a second open end, and a lumen continuous with said first open end and said second open end, said tubular element also being fabricated to be of substantially equal length to said tubular support and of a diameter sufficient to permit said tubular support to be positioned within said lumen of said tubular element;depositing a layer of radiation-emitting material on said external surface of said inner tubular element;positioning said inner tubular element within said outer tubular element so that said inner tubular element is disposed coaxially and substantially centrally within said outer tubular element and spaced apart therefrom;sealingly joining said first open end of said inner tubular element and said first open end of said outer tubular element; andsealingly joining said second open end of said inner tubular element and said second open end of said outer tubular element, so as to form said sealed double-walled tubular brachytherapy device.