초록 ▼

An anesthetic system has an external gas reservoir and three gas bellows arranged in the external gas reservoir to alternatingly collect or deliver breathing gas from and to a ventilator unit. In this manner a completely closed system is achieved with minimal consumption of, primarily, anesthetic. T

An anesthetic system has an external gas reservoir and three gas bellows arranged in the external gas reservoir to alternatingly collect or deliver breathing gas from and to a ventilator unit. In this manner a completely closed system is achieved with minimal consumption of, primarily, anesthetic. The bellows are regulated by a regulatory unit which, via a valve system, can selectively connect a source of drive gas to one or more of the containers in order to compress the gas bellows respectively contained therein. When no drive gas is supplied, each bellows passively expands.

대표청구항 ▼

[ We claim as our invention:] [1.] An anesthetic system comprising:an inspiratory line adapted for carrying breathing gas containing an anesthetic to a lung system, an expiratory line adapted for carrying expired breathing gas from a lung system;a ventilator unit having an inlet for receiving at lea

[ We claim as our invention:] [1.] An anesthetic system comprising:an inspiratory line adapted for carrying breathing gas containing an anesthetic to a lung system, an expiratory line adapted for carrying expired breathing gas from a lung system;a ventilator unit having an inlet for receiving at least a portion of said breathing gas and for delivering said at least a portion of said breathing gas to said inspiratory line, and an outlet for removing expired breathing gas carried in said expiratory line;a gas reservoir comprising at least two volume variable gas receptacles connected to said outlet via a first valve system and connected to said inlet via a second valve system for controlling a direction of flow of said breathing gas;regulatory means acting on said volume variable gas receptacles for alternatingly emptying one of said volume-variable gas receptacles at a time for supplying expired breathing gas to said inlet and for simultaneously collecting expired breathing gas from said outlet in another of said volume variable gas receptacles; andfilter means for removing at least one gaseous pollutant from said expired breathing gas before said expired breathing gas is returned to said inlet.