Liquid and gas supply apparatus and portable endoscope with the same
US6764442B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2002 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Nov 22, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B1/12
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A portable endoscope has a pump, a tank that stores liquid, a first coupling tube that spatially connects the pump with a gas supplying tube, a divergent tube that diverges from the first coupling tube and extends toward an inside of the tank, a balloon that is spatially connected to the divergent tube and is expandable and shrinkable in the tank, a second coupling tube that spatially connects the inside of the tank with a liquid supplying tube, and a gas direction controller that selectively directs the gas discharged from the pump to one of the gas supplying tube and the divergent tube. The liquid is stored outside of the balloon. The tank includes a sealing member that hermetically seals the tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.