Light diffuser for the photodynamic therapy of tumors in the oesophagus of a patient
US5219346A · kind A · utility
60Cited by
14References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 4, 1991 |
| Grant date | Jun 15, 1993 |
| Priority date | — |
| Expiry date | Jan 4, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/0609
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A light diffuser for simultaneous photodynamic therapy and hyperthermic treatment in the oesophagus has an arrangement (14 to 18) which disperses radially the light (10) fed in by way of an optical fiber (6) and has a tube (12) filled with silicone to which are added concentrations, modulated in the axial direction, of quartz grains having a diameter of approximately 40 .mu.m which bring about a refraction having little dependence on the wavelength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.