Scanning laser handpiece with shaped output beam
US6951558B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2003 |
| Grant date | Oct 4, 2005 |
| Priority date | — |
| Expiry date | Sep 14, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/20359
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A scanning optical system for delivering electromagnetic radiation onto tissue to be treated is cooperative with a lightguide or optical fiber. Radiation to be delivered is provided by a source thereof via the optical fiber. The optical system includes an optical projection arrangement comprising a plurality of lenses cooperatively arranged with the lightguide. A first of the lenses is arranged to receive radiation emerging from the lightguide. The beam of radiation is passed through the projection arrangement to form a treatment spot the radiation on the tissue. Scanning is effected by causing relative motion between the exit-end of said lightguide and at least the first lens, transverse to the optical axis of the projection arrangement. The treatment spot undergoes a related transverse motion over the tissue. In one example scanning is effected by moving the first lens with the lightguide fixed. The first lens is moved using an arrangement of piezo-electric actuators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.