SYSTEM AND METHOD FOR CONSERVING OXYGEN DELIVERY WHILE MAINTAINING SATURATION
First Claim
1. A system for conserving supply of a treatment gas to a patient, the system comprising:
- a source of the treatment gas;
a sensing device for sensing a breathing cycle of a patient;
a conserver for controlling intermittent supply of the treatment gas to the patient in response to the sensed breathing cycle;
wherein the conserver operates in a first mode when the sensing device senses the breathing cycle to supply the treatment gas to the patient in a first intermittent cycle coordinated with the breathing cycle; and
the conservator operates in a second mode, when the sensing device is unable to sense the breathing cycle, in which the conserver supplies the treatment gas to the patient at a second intermittent cycle determined independently of the patient breathing cycle where the second intermittent cycle is selected to overlap an assumed patient breathing cycle such that at least a desired amount of the treatment gas is supplied to the patient.
2 Assignments
0 Petitions
Accused Products
Abstract
A system and method, for maintaining a predetermined level of a treatment gas in a patient while conserving use of the treatment gas, comprising a source of the treatment gas, a sensing device for sensing a breathing cycle of a patient, a conserver for controlling intermittent supply of the treatment gas to the patient in response to the sensed breathing cycle. In a first mode, when the sensing device senses breathing, the treatment gas is intermittently supplied to the patient at a supply rate coordinated with the breathing cycle. In a second mode, when the sensing device is unable to sense breathing, the treatment gas is supplied to the patient at a second intermittent cycle, determined independently of the patient breathing cycle, which is selected to overlap an assumed patient breathing cycle such that at least a desired level of the treatment gas is maintained in the patient.
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Citations
33 Claims
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1. A system for conserving supply of a treatment gas to a patient, the system comprising:
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a source of the treatment gas; a sensing device for sensing a breathing cycle of a patient; a conserver for controlling intermittent supply of the treatment gas to the patient in response to the sensed breathing cycle; wherein the conserver operates in a first mode when the sensing device senses the breathing cycle to supply the treatment gas to the patient in a first intermittent cycle coordinated with the breathing cycle; and the conservator operates in a second mode, when the sensing device is unable to sense the breathing cycle, in which the conserver supplies the treatment gas to the patient at a second intermittent cycle determined independently of the patient breathing cycle where the second intermittent cycle is selected to overlap an assumed patient breathing cycle such that at least a desired amount of the treatment gas is supplied to the patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A system for maintaining a predetermined level of a treatment gas in a patient while conserving use of the treatment gas, the system comprising:
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a source of oxygen; a sensing device for sensing a breathing cycle of a patient; a conserver for controlling intermittent supply of the oxygen to the patient in response to the sensed breathing cycle; wherein the conserver operates in a first mode when the sensing device senses the breathing cycle to supply the oxygen to the patient in a first intermittent cycle coordinated with the breathing cycle immediately prior to the patient commencing inhalation so that the supplied oxygen dilutes and diffuses any carbon dioxide contained in the exhaled breath of the patient while also enriching a concentration of oxygen available for inhalation by the patient during a next inhalation breath; the conservator operates in a second mode, when the sensing device is unable to sense the breathing cycle, in which the conserver supplies the oxygen to the patient at a second intermittent cycle determined independently of the patient breathing cycle; the second intermittent cycle is selected to overlap an assumed patient breathing cycle such that at least a desired amount of the treatment gas is supplied to the patient; and the conserver, in responsive to at least one of a power supply failure and a system component failure, is actuated to an open state to allow a continuous flow of the oxygen to the patient interface. - View Dependent Claims (18)
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19. A method for maintaining a predetermined level of a treatment gas in a patient while conserving use of the treatment gas by delivering the treatment gas from a treatment gas source and to a patient interface via a conserver connected between the treatment gas source and the patient interface, the method comprising the steps of:
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sensing parameters of a breathing cycle of the patient; controlling operation of the conserver according to the sensed parameters of the breathing cycle so that the conserver operates in one of a first mode and a second mode; during the first mode, when at least one parameter of the breathing cycle is sensed, the conserver supplying the treatment gas to the patient in a first intermittent cycle coordinated with the patient breathing cycle, and during the second mode, when the conserver is unable to sense at least one parameter of the breathing cycle, the conserver supplying the treatment gas to the patient in a second intermittent cycle determined independently of the patient breathing cycle, in which the second intermittent cycle is selected to overlap an assumed patient breathing cycle such that at least a desired level of the treatment gas is maintained in the patient. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A system for conserving supply of a treatment gas to a patient, the system comprising:
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a source of the treatment gas; a sensing device for sensing a breathing cycle of a patient; a conserver for controlling intermittent supply of the treatment gas to the patient in response to the sensed breathing cycle; wherein the conserver supplies the treatment gas to the patient at an intermittent cycle determined independently of the patient breathing cycle where the intermittent cycle is selected to overlap an assumed patient breathing cycle such that at least a desired amount of the treatment gas is supplied to the patient.
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Specification