Endoscope capable of manipulation soon after autoclaving
US5871441A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1995 |
| Grant date | Feb 16, 1999 |
| Priority date | — |
| Expiry date | Dec 22, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B1/00068
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An endoscope has a channel switching device for use in switching over a suction channel. The channel switching device consists broadly of a cylinder unit and valve unit. The valve unit can be disassembled into three component parts; a button assembly, piston assembly, and mount assembly. The button assembly has a cap, which is made of a rigid resin such as polyether ketone (PEEK) or polysulfone (PSU), as the uppermost part thereof. Since the cap is made of a rigid resin durable to autoclaving; such as, PSU or PEEK, the valve unit will not be damaged due to autoclaving. Even when the autoclaved valve unit is put to use though it is not yet cooled down, an operator will not perceive heat very much but can manipulate the endoscope as he/she intends.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.