Device for therapeutical irradiation of organic tissue by laser radiation
US4836203A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1987 |
| Grant date | Jun 6, 1989 |
| Priority date | — |
| Expiry date | Oct 1, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/073
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The device comprises an HeNe laser (1), which emits on a wavelength of 633 nm and a second laser (5) emitting in the near-infrared range. This second laser (5) has a continuous-wave operation and emits radiation in the 800-870 mn wavelength range, preferably on an 840 nm wavelength. An optical system (14, 15) serves to widen the beams of the two lasers (1, 5) which follow the same beam path. This system (14, 15) allows continuous adjustment of the size of the field irradiated up to a maximum diameter of the order of 30 mm. For beam switching between the lasers (1, 5) and the beam outlet opening of the device, a mirror system (11, 18) is provided which comprises an outer mirror rotatable around two axes for positioning the irradiation field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.