초록 ▼

Contaminated air in general anaesthesia is extracted via a hemispherical hood 1 located closely over the patient. The hood 1, which is of a thin-wall transparent-shell form, is mounted for hand-touch variation of its orientation on an arm 2 which is carried by a telescopic column 3 that allows for h

Contaminated air in general anaesthesia is extracted via a hemispherical hood 1 located closely over the patient. The hood 1, which is of a thin-wall transparent-shell form, is mounted for hand-touch variation of its orientation on an arm 2 which is carried by a telescopic column 3 that allows for height adjustment. The arm 2 extends from a unit 18 that allows the hood 1 to be swung horizontally about the column 3, and gas is drawn from the hood 1 near its open mouth 6 via a low-down port 7 (FIGS. 3 to 5) that is coupled through the arm 2 and column 3 to a fan unit 4. Relief 23 of the bottom margin of the hood 1 may be used to enhance access to the patient, and for maneuverability the column 3 is trolley-mounted or adjustable laterally on a fixed track 35 (FIGS. 9 and 10).

대표청구항 ▼

Gas-extraction equipment for extracting gas from a region of air-contamination, said equipment comprising: (a) a hood for collecting the gas for extraction from said region, said hood including a transparent shell that has an open mouth for location over said region to admit the gas into the hood fr

Gas-extraction equipment for extracting gas from a region of air-contamination, said equipment comprising: (a) a hood for collecting the gas for extraction from said region, said hood including a transparent shell that has an open mouth for location over said region to admit the gas into the hood from said region, said shell comprising a domed wall that is of substantially hemispherical configuration and has a port therethrough, said port being located closely adjacent the mouth to facilitate maximum visibility through the hood during use of said equipment; (b) an arm for supporting the hood; (c) means mounting the shell on the arm with the shell projecting from the arm, the mounting means including a selectively-adjustable coupling to interconnect the arm with the domed wall at said port, said coupling being selectively adjustable for varying the orientation of the shell with respect to the arm in locating the open mouth of the domed shell over said region; and (d) means coupled to the hood at the port for withdrawing gas collected within the shell, through said port.