Dual catheter radiation delivery system
US6149574A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1998 |
| Grant date | Nov 21, 2000 |
| Priority date | — |
| Expiry date | Mar 17, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/1004
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Disclosed is a dual catheter radiation delivery system, for delivering a dose of radiation to a treatment site, typically in a body lumen. The system comprises an outer sheath catheter, having an inflatable balloon thereon. The system further comprises an inner radiation delivery catheter, having a radially expandable structure such as a balloon with a radiation source thereon. The sheath catheter is positioned such that the sheath balloon is at the treatment site, and the radiation delivery catheter is transluminally advanced through the sheath catheter such that the radiation source is positioned within the sheath balloon. The radiation delivery balloon is inflated within the sheath balloon, to position the radioactive source near the vessel wall. The source may comprise a thin film carried by the radiation delivery balloon, having a radioactive isotope implanted therein or chemically bonded thereto. Alternatively, the radioactive isotope may be implanted within or adhered to the radiation delivery balloon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.