Rigid endoscope of oblique window type
US4615333A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 30, 1985 |
| Grant date | Oct 7, 1986 |
| Priority date | — |
| Expiry date | Jan 30, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B1/00195
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A lens tube capable to view obliquely forwards through an observation optical system having the oblique tip face inclined from a plane perpendicular to the longitudinal axis of tubular sheath tube comprising the outer periphery of probe of endoscope is arranged eccentrically from the central axis of the sheath tube and an illuminating optical system is arranged in the residual space between the lens tube and the sheath tube for transmitting the illuminating light and the outlet tip is formed into an oblique face inclined adversely to the inclination of oblique tip face of the lens tube, thereby issuing the illuminating light to the viewing direction of rigid endoscope of oblique window type.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.