Photoemitting catheters and other structures suitable for use in photo-dynamic therapy and other applications
US6030411A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 8, 1998 |
| Grant date | Feb 29, 2000 |
| Priority date | — |
| Expiry date | Apr 8, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/95
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A structure generates electromagnetic radiation having at least one wavelength selected for activating a photosensitive substance that is applied to a tissue to be treated. The structure is particularly useful for photodynamic therapy (PDT) applications. The structure includes a body of material, such as a polymer filament, band, or substrate, that contains a gain medium. The gain medium in turn contains a substance (such as dye molecules) for generating a stimulated emission that includes the at least one wavelength when excited by a pump wavelength, and a plurality of scattering sites (such as scattering particles) for scattering the stimulated emission to provide a narrow band emission at the at least one selected wavelength. The narrow band emission in turn activates the photo-sensitive therapeutic substance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.