Fibre-optic apparatus for the photodynamic treatment of tumors
US5146917A · kind A · utility
44Cited by
7References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 4, 1991 |
| Grant date | Sep 15, 1992 |
| Priority date | — |
| Expiry date | Jan 4, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N5/0601
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A bronchoscope has a fibre-optic apparatus for the photodynamic treatment of tumors in the region of the furcate branches of the bronchi, the divergent pencil of rays (13), which emerges from the end face (9) of an optical fibre, striking a lens arrangement consisting of two microlenses (14,15) which, owing to the spherical aberration, deflect edge rays (23) in the divergent pencil of rays (13) of the optical fibre (8) in such a manner that a homogeneous sharp-edged emerging pencil of rays is formed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.