Valve for use in a gas delivery system
AssigneeResMed Limited
InventorsKenneth Frederick Hely, Perry David Lithgow
Life of this patent
Estimating the term…
Abstract
A safety valve for use in closed systems wherein there is a flow generator delivering oxygen or some other type of breathing gas to a patient. The safety valve of the present invention vents to the open atmosphere in the event that the breathing gas generated by the flow generator diminishes or terminates.
Claims10
A breathing safety valve secured between a patient and means to deliver a breathing gas in a substantially closed system, said safety valve comprising:
- (a) an outer housing, said outer housing having a port for the purpose of venting the breathing gas to the atmosphere making the system an open system, and defining a housing shoulder;
- (b) a slider element, said slider element defining a slider shoulder and being configured to fit within said outer housing, said slider element having at least two positions engageable within said housing, a first position wherein said slider shoulder engages said housing shoulder to substantially block said port such that said system is closed, and a second position wherein said slider element does not substantially block said port such that said system is open to said atmosphere;
- and
- (c) a force mechanism applying a returning force to said slider element, said force biasing said slider element from said first position to said second position.
A breathing safety valve secured between a patient and means to deliver a breathing gas in a substantially closed system wherein said valve is integral with said means to deliver a breathing gas, said safety valve comprising:
- (a) an outer housing said outer housing having a port for the purpose of venting the breathing gas to the atmosphere;
- (b) a slider element, configured to fit within said outer housing, said slider element having at least two positions engageable within said housing, a first position wherein said slider element substantially blocks said port such that said system is closed, and a second position wherein said slider element does not substantially block said port such that said system is open to said atmosphere;
- and
- (c) a first magnet on said slider element and a second magnet on said housing to apply a returning force to said slider element, said force biasing said slider element from said first position to said second position.
Dependencies are inferred from the claim text.