Patent · US Expired

Endoscopic instrument

US5554099A · kind A · utility

7Cited by

3References

5Claims

0Family size

Assignee

RICHARD WOLF GMBH · DE

Inventors

Rudolf Heimberger · Oberderdingen, DE
Uwe Schaumann · Oberderdingen, DE

Key dates

Filing date	Nov 29, 1994
Grant date	Sep 10, 1996
Priority date	—
Expiry date	Nov 29, 2014

Classification

Technology area (CPC G)Physics
CPC primaryG02B23/2446
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

The endoscopic instrument has a long, stretched out shaft (5) and at least one rod-shaped lens (6) arranged therein. The rod lens (6) is provided on its peripheral surfaces (10) with a coating that increases the breaking strength. The coating may be, for example, polyimide, amorphous carbon, or silicon-oxide carbide. To increase adhesion of the coating the rod lens may be pretreated with caustic on its peripheral surfaces.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.