Air delivery and circulation means for a surgical drape

Details Air delivery and circulation means for a surgical drape Air delivery and circulation means for a surgical drape

1991-11-12

1993-06-22

Burr, Edgar S.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820024, 12820418, 12820526, A61M 1600

Patent

active

052209156

ABSTRACT:
An air delivery and ventilation system for head surgery which is used under a drape including a flexible air supply conduit with discharge at inlet ends, the discharge end being elevated over the chest of the patient by a positioning bracket formed of bendable thin-gauge metal shaped with a pair of legs joined by a circular saddle which engages the discharge end, the pair of legs each being bendable around the opposite shoulder of the patient and inserted thereunder, a plug positioned in the remotely-located inlet end of the supply conduit having a small diameter oxygen passage with a nozzle on the end thereof positioned in the center of the plug along the axis of the conduit with the passage connected to a source of pressurized oxygen to produce a high velocity jet in the supply conduit, the plug further including air passage means surrounding the oxygen passage so as to provide substantial volumes of atmospheric air drawn into the conduit by the venturi action of the high velocity jet to provide low velocity oxygen-enhanced air from the discharge end of the supply conduit.

REFERENCES:
patent: 1257332 (1918-02-01), Erlandson
patent: 1553098 (1925-09-01), Napier
patent: 2290437 (1942-07-01), Kilgore
patent: 2628803 (1953-02-01), Krewson
patent: 3403677 (1968-10-01), Struve
patent: 3482571 (1969-12-01), Behrendt
patent: 3859993 (1975-01-01), Bitner
patent: 4223669 (1980-09-01), Morledge
patent: 4321917 (1982-03-01), Campbell
patent: 4377161 (1983-03-01), Whitt
patent: 4508117 (1985-04-01), Rodari

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