Variable positioning gaseous conduit orifice and method of use

摘要

A selectively positionable fluid conduit for gas removal from or gas introduction to a specific environment is disclosed. The fluid conduit includes a tubular wand having an orifice at the distal end thereof. Unwanted gases are removed by suction force through the orifice. Desirable or therapeutic gases are introduced to a specific location through the orifice. The tubular wand is coupled to a malleable positioning tube. The malleable positioning tube can be manipulated into various configurations such that the positioning tube maintains the last chosen configuration. In one disclosed embodiment, the malleable positioning tube includes tubular bellows formed from a plurality of alternating large and small diameter rings joined by frusto-conical walls. In another embodiment, the malleable positioning tube includes a malleable wire associated with a semi-rigid tube. Interaction between the rings and the frusto-conical walls imparts malleable properties to the positioning tube. A flexible liner located within the malleable positioning tube can provide a smooth surface which eliminates whistling caused by gas flow through the tube. The malleable positioning tube is in gaseous communication with either a gas evacuator or to a pressurized gas source. In one disclosed embodiment, a flexible tube is used to connect the malleable positioning tube to a gas evacuator or gas source.