摘要:
In a first aspect, the invention relates to an apparatus for inducing or maintaining a target end tidal concentration of a gas in a subject comprising a breathing circuit, a source of gas flow into the circuit, means for controlling the rate of the source of gas flow into the circuit and means for controlling the concentration of gases in the source gas flow independently from each other. In another aspect, the invention relates to a method of preparing an apparatus for inducing or maintaining a target end tidal concentration of a gas X in a subject comprising selecting a rate of a source gas flow into a breathing circuit, selecting the concentration of at least one constituent gas of a component gas making up the source gas to a level corresponding to the end tidal concentration of the gas X, whereby the apparatus is adapted to administer a source gas having a first gas composition
摘要:
In a first aspect, the invention relates to an apparatus for inducing or maintaining a target end tidal concentration of a gas in a subject comprising a breathing circuit, a source of gas flow into the circuit, means for controlling the rate of the source of gas flow into the circuit and means for controlling the concentration of gases in the source gas flow independently from each other. In another aspect, the invention relates to a method of preparing an apparatus for inducing or maintaining a target end tidal concentration of a gas X in a subject comprising selecting a rate of a source gas flow into a breathing circuit, selecting the concentration of at least one constituent gas of a component gas making up the source gas to a level corresponding to the end tidal concentration of the gas X, whereby the apparatus is adapted to administer a source gas having a first gas composition.
摘要:
A brush assembly using a spacer and the spacer permit multiple brushes to be combined on a driveshaft that is driven in rotation. The use of multiple brushes allows one to vary the characteristics of the brush assembly along the assembly's length. This also permits one to change fewer than all brushes when needed, thereby saving the cost of replacing an entire brush assembly's brushes when worn. The spacer is a body with a central opening that is preferably polygonal in section, opposing ends that form shoulders and a radially extending gasket located intermediate the opposing ends.
摘要:
A brush assembly using a spacer and the spacer permit multiple brushes to be combined on a driveshaft that is driven in rotation. The use of multiple brushes allows one to vary the characteristics of the brush assembly along the assembly's length. This also permits one to change fewer than all brushes when needed, thereby saving the cost of replacing an entire brush assembly's brushes when worn. The spacer is a body with a central opening that is preferably polygonal in section, opposing ends that form shoulders and a radially extending gasket located intermediate the opposing ends.