Power failure management for respiratory system heater unit
First Claim
1. In a humidification system comprising a heater unit configured to heat liquid contained within a chamber supported by the heater unit, the chamber adapted to couple to a source of breathable gas via a gas conduit and to a patient via an inspiratory limb so as to impart heat to a portion of a respiratory system, the heater unit being independent of said source of breathable gas, the heater unit including an audible alarm and heater thermally couplable to said chamber and adapted to be selectively energized from a source of electrical supply, a method of power failure management for the heater unit comprising:
- monitoring the source of electrical supply at the heater until for a disruption;
in response to detection of the disruption of, sounding an audible alarm of the heater unit.
1 Assignment
0 Petitions
Accused Products
Abstract
A heater unit includes power failure management to detect disruptions in the electrical power supply, such as the AC supply, for the unit. The heater unit emits an audible alarm in response to detection of such a disruption, and may shut down the heater(s) and visuals display(s). The heater unit advantageously includes a power storage device, such as a super-capacitor, to temporarily power the electronic circuitry of the heater unit. Operating parameters, such as of a processor of the electronic circuitry, may be stored in a non-volatile memory response to the disruption, and recalled if the disruption terminates before the level of power has gotten too low to sustain reliable operation of the processor.
-
Citations
29 Claims
-
1. In a humidification system comprising a heater unit configured to heat liquid contained within a chamber supported by the heater unit, the chamber adapted to couple to a source of breathable gas via a gas conduit and to a patient via an inspiratory limb so as to impart heat to a portion of a respiratory system, the heater unit being independent of said source of breathable gas, the heater unit including an audible alarm and heater thermally couplable to said chamber and adapted to be selectively energized from a source of electrical supply, a method of power failure management for the heater unit comprising:
-
monitoring the source of electrical supply at the heater until for a disruption; in response to detection of the disruption of, sounding an audible alarm of the heater unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A humidification system comprising:
a heater unit configured to heat liquid contained within a chamber supported by the heater unit, said chamber adapted to couple to a source of breathable gas via a gas conduit and to a patient via an inspiratory limb so as to impart heat to a portion of a respiratory system, the heater unit being independent of said source of breathable gas, the heating unit including; a heater thermally couplable to said chamber; a power supply coupled to a source of electrical supply and adapted to output a regulated DC supply; electronic circuitry adapted to be energized from the regulated DC supply, the heater responsive to the electronic circuitry whereby to be selectively energized from the source of electrical supply, the electronic circuitry being responsive to disruption of the source of electrical supply to output a power disruption signal; and an alarm responsive to the power disruption signal to generate an audible alarm whereby to provide an alert indicative of the disruption. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
Specification