Importance

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Abstract

A seed for implanting radioactive material within the living body of a recipient which contains radioactive material which emits therapeutic radiation to treat a specific localized area of the recipient's body. A capsule, which sealingly encloses the radioactive material, preventing contact with the recipient's body fluid and tissue, includes a generally cylindrical body portion having a pair of open ends. End members of a wall thickness substantially that of the cylindrical body close the open ends, and include an end wall and a generally tubular skirt portion extending therefrom. The skirt portion and the ends of the cylindrical body are deformably joined together by welding, crimping, peening or other cold flow metal treatment, to form a hermetic seal between the end cap and cylindrical body. Also disclosed is a cylindrical plug-like coupling member which joins the pair of seeds in end-to-end coaxial relationship. Each end of the coupling member is received in a socket-like cavity formed in the hollow interior of one end member.

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First Claim