Apparatus for irradiating the bronchi of a patient for the purpose of photodynamic therapy
US5054867A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 4, 1991 |
| Grant date | Oct 8, 1991 |
| Priority date | — |
| Expiry date | Jan 4, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/0604
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for irradiating the bronchi of a patient for the purpose of photodynamic therapy has an optical fibre (11) that feeds the light of a laser into a bronchoscope and is surrounded by a light-guide tube (8) and an outer tube (2). The distal end (13) of the optical fibre (11) is embedded in a silicone composition (17) containing 7 parts per thousand of TiO.sub.2 particles having a particle size of 0.2 .mu.m. The silicone composition (17) fills the front end of the light-guide tube (8) as far as the end face (6) of an aluminium cylinder (5) which acts as a mirror. The light dispersed by the TiO.sub.2 particles is emitted radially through the light-guide tube (8) and the front portion of the outer tube (2) and acts on the patient's bronchi.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.