Ventilator respiratory variable-sized gas accumulator
This disclosure describes systems and methods for ventilating a patient with a system that includes an accumulator for storing a gas mixture. The disclosure further describes a novel approach for a fast delivery of a change in gas mixture to a patient by utilizing a variable-sized accumulator.
1. A medical ventilator system, comprising:
a processor;
a plurality of sources of different gases controlled by the processor;
a gas manifold connected to an outlet to a patient circuit via a flow path, the gas manifold receiving gas from the plurality of gas sources forming a gas mixture;
an accumulator with a plurality of chambers, the accumulator is adapted to receive the gas mixture from the gas manifold;
at least one purge valve in at least one chamber of the accumulator other than a first chamber controlled by the processor, the at least one purge valve is adapted to control a release of the gas mixture from the at least one chamber other than the first chamber of the accumulator to an environment external to the patient circuit; and
at least one valve controlled by the processor, the at least one valve is adapted to change a volume of the accumulator by controlling at least one chamber flow path between the plurality of chambers of the accumulator.
2. The medical ventilator system of claim 1 , wherein the accumulator is positioned away from the flow path.
3. The medical ventilator system of claim 2 , wherein the accumulator is positioned within the ventilator system adjacent to the flow path and the manifold.
4. The medical ventilator system of claim 1 , wherein a pressure of the gas mixture in the accumulator is maintained from about 14 PSIG to 9 PSIG during a change in volume of the accumulator.
5. The medical ventilator system of claim 1 , wherein a pressure of the gas mixture in the accumulator is controlled by controlling a flow rate of the gas mixture.
6. The medical ventilator system of claim 1 , wherein the processor controls the volume of the accumulator based on at least one of a sensor reading, a change in gas mixture, a ventilator parameter, a breath type, and a command.
7. The medical ventilator system of claim 1 , wherein the volume of the accumulator ranges from about 100 ml to about 500 ml.
8. The medical ventilator system of claim 1 , further comprising a display controlled by the processor, the display is adapted to illustrate at least one of a pressure of the gas mixture in the accumulator and the volume of the accumulator.
9. The medical ventilator system of claim 1 , further comprising an accumulator pressure sensor in communication with the processor, the accumulator pressure sensor is adapted to determine a pressure of the gas mixture inside of the accumulator.
10. The medical ventilator system of claim 1 , wherein the at least one purge valve is a check valve.
11. The medical ventilator system of claim 1 , further comprising a safety pressure release in the first chamber of the accumulator.
12. The medical ventilator system of claim 1 , wherein the at least one valve is a solenoid valve.
13. A pressure support system comprising:
a processor;
a pressure generating system adapted to generate a flow of breathing gas controlled by the processor;
a ventilation system including a patient circuit controlled by the processor;
a plurality of sources of different gases controlled by the processor;
a gas manifold connected to an outlet to a patient circuit via a flow path, the gas manifold receiving gas from the plurality of gas sources forming a gas mixture;
an accumulator with a plurality of chambers, the accumulator is adapted to receive the gas mixture from the gas manifold;
at least one purge valve in at least one chamber of the accumulator other than a first chamber controlled by the processor, the at least one purge valve is adapted to control a release of the gas mixture from the at least one chamber other than the first chamber of the accumulator to an environment external to the patient circuit; and
at least one valve controlled by the processor, the at least one valve is adapted to change a volume of the accumulator by controlling at least one chamber flow path between the plurality of chambers of the accumulator.
14. The pressure support system of claim 13 , wherein the accumulator is positioned away from the flow path.
15. The pressure support system of claim 14 , wherein the accumulator is positioned within the ventilator system adjacent to the flow path and the manifold.
16. The pressure support system of claim 13 , wherein a pressure of the gas mixture in the accumulator is maintained from about 14 PSIG to 9 PSIG during a change in volume of the accumulator.
17. The pressure support system of claim 13 , wherein a pressure of the gas mixture in the accumulator is controlled by controlling a flow rate of the gas mixture.
18. The pressure support system of claim 13 , wherein the processor controls the volume of the accumulator based on at least one of a sensor reading, a change in gas mixture, a ventilator parameter, a breath type, and a command.
19. The pressure support system of claim 13 , further comprising a display controlled by the processor, the display is adapted to illustrate at least one of a pressure of the gas mixture in the accumulator and the volume of the accumulator.
20. The pressure support system of claim 13 , further comprising an accumulator pressure sensor in communication with the processor, the accumulator pressure sensor is adapted to determine a pressure of the gas mixture inside of the accumulator.