Patent · US Expired

Capsule seed

US6716156B2 · kind B2 · utility

39Cited by

5References

21Claims

0Family size

Assignee

AEA Technology OSA GmbH · DE

Inventors

Helmut Menuhr · Braunschweig, DE
Eberhard Fritz · Schwielowsee, DE
Mark G. Shilton · Chelmsford, US

Key dates

Filing date	Feb 4, 2002
Grant date	Apr 6, 2004
Priority date	—
Expiry date	Feb 4, 2022

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61N2005/1024
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A radioactive or activatable seed for use in brachytherapy, and a method for producing the seed, the seed comprising a closed and self-supported casing consisting of (a) a radioactive or activatable metallic material selected from the group consisting of a metal, an alloy and a metal composite or mixtures thereof, optionally in combination with (b) a non-radioactive, non-activatable metallic material; wherein (a) comprises a radioactive nuclide selected from the group consisting of Pd-103, Tm-170, Sr-90, Y-90, Yb-169, P-32, Ge-71, Se-75, Cl-36, Ta-182, Tl-204, Re-188, W-188, Ce-144, Pr-144, Sn-123, Ru-106, Rh-106 and mixtures thereof, and/or an activatable precursor nuclide thereof selected from the group consisting of Pd-102, Rh-103, Tm-169, Y-89, Yb-168, P-31, Ge-70, Se-74, Cl-35, Ta-181, Tl-203, W-186, Sn-122 and mixtures thereof, excluding metallic Pd with natural abundance of Pd-102.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.