Coiled brachytherapy device
US6419621B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 1999 |
| Grant date | Jul 16, 2002 |
| Priority date | — |
| Expiry date | May 21, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/1025
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A brachytherapy device in the form of a radioactive coiled wire. The wire used to form the coil is typically between about 10 and 200 micrometers in diameter, and the coil formed from the wire has an outer diameter of between about 25 micrometers and about 1000 micrometers. The coil can be formed first from a wire and then made radioactive. Alternatively, the wire can be made radioactive first and then formed into a coil. Methods of incorporating a radioisotope into the wire or coil include, for example, nuclear transformation and ion implantation, which do not affect the flexibility and other mechanical properties of the coil. Thin radioisotope films can also be applied to the wire.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.