Observation window washing device of endoscope
US6638214B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 2, 2002 |
| Grant date | Oct 28, 2003 |
| Priority date | — |
| Expiry date | Apr 2, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B1/126
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A notched void portion 29 is provided in a rigid casing block 20 of a rigid tip end section 2c of an endoscopic insertion instrument 2. For spurting a cleaning fluid toward an observation window 11, a cleaning supply passage is constituted by a cleaner nozzle 13, a connector pipe 27 and a flexible tube 26. A cleaner nozzle 13 is partly fitted in the notched void portion 29 which is formed in the rigid casing block 20. The connector pipe 27 is formed in a staggered shape having an angularly bent intermediate pipe section 27c between straight and parallel front and rear pipe sections 27a and 27b. The straight front pipe section 27a is at least partly fitted in the rigid casing block 20 and its fore distal end portion is fitted in the cleaner nozzle 13 over a predetermined length. On the other hand, the flexible tube is fitted on a rear end portion of the straight rear pipe section 27b the position of which is offset radially inward relative to the straight front pipe section 27a by the angularly bent intermediate pipe section 27c to avoid interference with biopsy channel 24, light guides 24 and wiring cable 17 which are threaded through a foremost angle ring 40 of an angle section 2b…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.