Adaptor for measuring length optically for endoscope
US4660982A · kind A · utility
66Cited by
4References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 7, 1985 |
| Grant date | Apr 28, 1987 |
| Priority date | — |
| Expiry date | May 7, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/1076
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An optical adaptor incorporating a projecting optical system, view field-changing optical system and at least one index attached to said projecting optical system is provided to be attached detachably to the tip portion of insert member of an endoscope equipped with an illuminating optical system for illuminating an object and an objective optical system for focusing the object into the elongated tip of the insert member, thereby enabling measuring the length of the object by projecting the index to the plane including the object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.