SYSTEMS AND METHODS FOR EXTENDED VOLUME RANGE VENTILATION
First Claim
1. A gas delivery system, the gas delivery system comprising:
- a differential flow transfer element, wherein the differential flow transfer element is coupled to a first component gas via a first flow valve and to a second component gas via a second flow valve, and wherein the differential flow transfer element is coupled to an outlet via a third flow valve;
a processor; and
a computer readable medium, wherein the computer readable medium includes instructions executable by the processor to;
operate the first flow valve intermittently at a first flow rate and the second flow valve intermittently at a second flow rate to yield a defined mixture including the first component gas and the second component gas in the differential flow transfer element; and
operate the third flow valve intermittently at a third flow rate to deliver the defined mixture including the first component gas and the second component gas from the differential flow transfer element to the outlet, wherein the third flow rate is less than the sum of the first flow rate and the second flow rate.
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Accused Products
Abstract
Various embodiments of the present invention provide systems, methods and devices for delivering a defined gas mixture to a recipient. For example, various embodiments of the present invention provide ventilators that include at least two gas sources, a gas outlet and a differential flow transfer element. The differential flow transfer element receives one component gas from one of the gas sources at a first flow rate, and another component gas from the other gas source at a second flow rate. The differential flow transfer element distributes a mixture that includes at least the aforementioned component gases at a third flow rate via the gas outlet. The third flow rate is less than the sum of the first flow rate and the second flow rate.
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Citations
22 Claims
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1. A gas delivery system, the gas delivery system comprising:
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a differential flow transfer element, wherein the differential flow transfer element is coupled to a first component gas via a first flow valve and to a second component gas via a second flow valve, and wherein the differential flow transfer element is coupled to an outlet via a third flow valve; a processor; and a computer readable medium, wherein the computer readable medium includes instructions executable by the processor to; operate the first flow valve intermittently at a first flow rate and the second flow valve intermittently at a second flow rate to yield a defined mixture including the first component gas and the second component gas in the differential flow transfer element; and operate the third flow valve intermittently at a third flow rate to deliver the defined mixture including the first component gas and the second component gas from the differential flow transfer element to the outlet, wherein the third flow rate is less than the sum of the first flow rate and the second flow rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A ventilator, the ventilator comprising:
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a first gas source; a second gas source; a gas outlet; and a differential flow transfer element that receives a first component gas from the first gas source at a first flow rate, receives a second component gas from the second gas source at a second flow rate, and provides a mixture including the first component gas and the second component gas at a third flow rate via the gas outlet;
wherein the third flow rate is less than the sum of the first flow rate and the second flow rate. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for providing breathable gas to a recipient, the method comprising:
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providing a ventilator with an accumulator, wherein the accumulator is coupled to a first component gas via a first flow valve and to a second component gas via a second flow valve, and wherein the accumulator is coupled to an outlet via a third flow valve; receiving a request for a defined mixture including the first component gas and the second component gas; operating the first flow valve intermittently at a first flow rate and the second flow valve intermittently at a second flow rate to yield the defined mixture in the accumulator; and operating the third flow valve intermittently at a third flow rate to deliver the defined mixture from the accumulator to the outlet, wherein the third flow rate is less than the sum of the first flow rate and the second flow rate, and wherein over a period extending two or more inlet periods, the sum of the volume of the first component gas received via the first flow valve the volume of the second component gas received via the second flow valve approximately equals the volume of the defined mixture provided via the third flow valve. - View Dependent Claims (20, 21, 22)
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Specification