초록 ▼

An anesthesia mask for laboratory animals comprising a supply tube having a generally conical mask at one end into which the animal\s snout is inserted. Pressurized anesthesia gas is delivered through the tube and is prevented from leaking into the ambient environment by means of a second tube which

An anesthesia mask for laboratory animals comprising a supply tube having a generally conical mask at one end into which the animal\s snout is inserted. Pressurized anesthesia gas is delivered through the tube and is prevented from leaking into the ambient environment by means of a second tube which concentrically surrounds the supply tube and is annularly spaced therefrom so that the space can be evacuated by a vacuum source. A holding bar is slidable transversely into the mask to hook onto the animal\s incisors.

대표청구항 ▼

A mask for delivering anesthetic gas under pressure for inhalation by a laboratory animal, said mask comprising: first and second hollow tubes, each having first and second ends, wherein said first tube is secured within said second tube in spaced relation from said second tube to define an aspirati

A mask for delivering anesthetic gas under pressure for inhalation by a laboratory animal, said mask comprising: first and second hollow tubes, each having first and second ends, wherein said first tube is secured within said second tube in spaced relation from said second tube to define an aspiration chamber between the tubes, said first end of said first tube being longitudinally recessed from the first end of said second tube, said first tube having a snout-receiving means at its first end for receiving a snout of said laboratory animal in a loose fitting engagement, said snout-receiving means being surrounded by said aspiration chamber; means for supplying said anesthetic gas under pressure to said snout-receiving means of said first tube; and means for aspirating gas from said aspiration chamber to prevent anesthetic gas which is not inhaled by said laboratory animal from leaking into the ambient environment.