Photodynamic therapy system and method
US6132423A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1997 |
| Grant date | Oct 17, 2000 |
| Priority date | — |
| Expiry date | Jul 21, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/22087
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and catheter system for irradiating a body lumen wall which comprises providing an elongated, flexible radiation transmission member having an emitting portion at its distal end, advancing the emitting portion to an area adjacent the wall defining the patient's body lumen to be treated by irradiation, and directing radiation through the transmission member while moving the transmission member to cause the emitting portion to irradiate a length of the wall of the body lumen. The transmission member may be rotated independently or in conjunction with longitudinal movement to achieve either selective or uniform irradiation of the wall defining the body lumen. In one embodiment, this invention comprises an elongated flexible shaft, having an inflatable member disposed at the distal end. A radiation transmission member having an emitting portion on its distal end is slidably disposed within the elongated shaft so that the emitting portion resides within the inflatable member. The system is configured so that the emitting portion may travel at least along the length of the inflatable member by longitudinally moving the transmission member. Optionally, the emitting portion may be…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.