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Radioactive therapeutic seeds

  • US 6,471,632 B1
  • Filed: 05/18/2001
  • Issued: 10/29/2002
  • Est. Priority Date: 05/18/2001
  • Status: Expired due to Term
First Claim
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1. A radioactive therapeutic seed, comprising:

  • a) a carrier structure carrying a radioactive isotope;

    b) a ceramic collar member provided about said carrier structure;

    c) a metal ring provided about said collar member; and

    d) a capsule having two parts, each part including a closed end and an open end, said carrier structure with said collar member being disposed in said capsule with said open ends of said two parts of said capsule abutting said metal ring and said open ends of said two parts of said capsule and said metal ring being sealed over said ceramic collar member.

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