Endoscope for nasal surgery
US5020514A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 22, 1990 |
| Grant date | Jun 4, 1991 |
| Priority date | — |
| Expiry date | May 22, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2217/007
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An endoscope for nasal surgery comprises an outer shaft having a handle incorporating a switching valve for connecting a suction and flushing channel of the outer shaft to, and disconnecting it from, a source of negative pressure and a source of flushing fluid. A working insert for insertion into the outer shaft, comprises a shaft for receiving an optical system proximally connected to the working insert, a shaft having a proximally positioned connector for insertion therethrough of an auxiliary instrument, for example a pair of forceps, and two guides for wires or rods which are movable by means of handles pivoted to the proximal end part of the working insert to displace a lever on the distal end of the working insert angularly to adjust the distal end of the auxiliary instrument.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.