Unit for insufflating and cleaning gas
US5098375A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 29, 1990 |
| Grant date | Mar 24, 1992 |
| Priority date | — |
| Expiry date | May 29, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2218/006
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A insufflation unit for distending a body cavity such as a uterus which is to be examined or treated endoscopically has a gas control circuit which connects a gas supply unit to the endoscope via a flowmeter, a shut-off valve and a filter. Associated with this gas control circuit is an extractor circuit which comprises a pump whose suction end is coupled up to the output of the flowmeter. A pressure-measuring transducer logs the pressure at the suction end of the pump and its measurements, together with those from the flowmeter, are made use of in analyzer electronics by switching off the pump before a pressure likely to put the patient at risk occurs should there be a fault in the extractor circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.