Unit for insufflating and cleaning gas

Details Unit for insufflating and cleaning gas Unit for insufflating and cleaning gas

1990-05-29

1992-03-24

Pellegrino, Stephen C.

Surgery

Means for introducing or removing material from body for...

Gas application

604 26, 128747, A61M 3700

Patent

active

050983750

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.

REFERENCES:
patent: 4538594 (1985-09-01), Boebel et al.
patent: 4735603 (1988-04-01), Goodson et al.
patent: 4895144 (1990-01-01), Cook et al.
patent: 4966578 (1990-10-01), Baier et al.
patent: 4971034 (1990-11-01), Doi et al.
patent: 5013294 (1991-05-01), Baier

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