Video display system for locating a projected image adjacent a surgical field
US6020917A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 1996 |
| Grant date | Feb 1, 2000 |
| Priority date | — |
| Expiry date | Jun 25, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/373
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus for projecting an image of a surgical field along an optical path to intersect a display screen which is nonperpendicular to the optical path and adjacent the surgical field. A video projector system and accompanying optics impart at least one of a tilted focal plane or depth of focus to the projected image. The optical path of the projected image is located adjacent the surgical field. A sterilizable display screen is located in the optical path adjacent the surgical field so that a normal to the screen is noncoincident with the optical path and the projected image on the screen is of constant focus across the screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.