Back to results
US 5,311,862 AGranted
Inhalation apparatus
OwnerRichard J. Blasdell, Raymond L. Blasdellinventors
Life of this patent
Estimating the term…
Abstract
A face mask includes a cup-shaped body for enclosing an external respiratory organ, such as the nose, of a patient. Flow of a respirable gas into the body and exhaust of expired gas from the body are unidirectional controlled by respiration check valves. A plurality of detachably securable and interchangeable accessory devices adapt the mask for use with selected prior art scavenging devices.
Claims6
An inhalation mask for administering a selected respirable gas to an individual, which individual includes a facial area containing a respiratory organ, said mask comprising:
- a) a generally cup-shaped body for enclosing said respiratory organ and receivable against the facial area of said individual;
- b) inlet means formed integrally with said cup-shaped body, for allowing entrance of said respirable gas into said cup-shaped body;
- c) an exhalation valve assembly extending from said cup-shaped mask;
- d) a vacuum scavenger removably coupled to said exhalation valve assembly including;
- i) an adaptor removably attachable to said exhalation valve,
- ii) a vacuum conduit coupling a vacuum source to said adapter, and
- iii) a relief valve formed in said adapter selectively coupling said vacuum source to an outside atmosphere for relieving excess negative pressure generated by said vacuum source.
4 more elements
Dependencies are inferred from the claim text.