Implants for use in brachytherapy and other radiation therapy that resist migration and rotation
US7736293B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2005 |
| Grant date | Jun 15, 2010 |
| Priority date | — |
| Expiry date | Sep 27, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/1024
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In one embodiment a therapeutic member includes a radioactive source and a material (e.g., a bio-absorbable polymeric material) that encapsulates the radioactive source. An outer surface of the encapsulating material includes a plurality of protrusions to reduce a tendency of the member to migrate and rotate within a patient's body after implantation. In an embodiment, the encapsulating material includes an anchor mechanism that extends from at least one of the longitudinal ends of the radioactive source to reduce a tendency of the member to migrate and rotate within a patient's body after implantation. Embodiments of the present invention are also directed to strands that include similar protrusions and/or anchor mechanisms. Additionally, embodiments of the present invention are directed to spacers that resist migration and rotation. Embodiments are also directed to radiopaque markers that resist migration and rotation. This abstract is not intended to be a complete description of the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.