초록 ▼

A ventilator, or a breathing assistance apparatus, is disclosed to ventilate patients who may have breathing difficulties, said device comprising a inspiratory pressure control duct configured to be immersed in a first body of fluid; a positive end-expiratory pressure control duct configured to be i

A ventilator, or a breathing assistance apparatus, is disclosed to ventilate patients who may have breathing difficulties, said device comprising a inspiratory pressure control duct configured to be immersed in a first body of fluid; a positive end-expiratory pressure control duct configured to be immersed in a second body of fluid; at least one valve connected to the peak inspiratory pressure control duct and to the positive end-expiratory pressure control duct, and at least one controller communicably connected to the valve to control rate of cycling of the valve, thereby controlling number of breaths per minute, and to control the duration of peak inspiratory pressure also known as inspiratory time.

대표청구항 ▼

1. A ventilator system comprising: a pressurized gas supply;at least one container filled to a level with a body of fluid;a primary duct including proximal and distal ends, the proximal end adapted for connection to the pressurized gas supply, the primary duct also adapted for connection to a patien

1. A ventilator system comprising: a pressurized gas supply;at least one container filled to a level with a body of fluid;a primary duct including proximal and distal ends, the proximal end adapted for connection to the pressurized gas supply, the primary duct also adapted for connection to a patient interface between the proximal and distal ends;a valve comprising at least an inlet port, a first outlet port and a second outlet port, the inlet port connected to the distal end of the primary duct;wherein the ventilator system further comprises: (i) at least one peak inspiratory pressure (PIP) control duct connected to the first outlet port of the valve and having a length immersed in the body of fluid;(ii) at least one positive end-expiratory pressure (PEEP) control duct connected to the second outlet port of the valve and having a length immersed in the body of fluid;(iii) wherein the immersed length of the PIP control duct is greater than the immersed length of the PEEP control duct; and(iv) wherein the valve is configured to cycle between the first outlet port and the second outlet port thereby switching a flow of a gas from the inlet port to only the first outlet port and from the inlet port to only the second outlet port. 2. The ventilator system of claim 1 wherein at least one angled section is connected to a tip of at least one of the PIP control duct and the PEEP control duct. 3. The ventilator system of claim 1 further comprising at least one safety duct having a length connected to the primary duct and immersed in the body of fluid, wherein the immersed length of the safety duct is greater than the immersed length of the PIP control duct. 4. The ventilator system of claim 1 wherein a controller is communicably connected to the valve to control rate of cycling of the valve, thereby controlling number of breaths per minute of a patient, and to control at least one of (a) inspiratory time in seconds, (b) ratio of inspiratory time to expiratory time, and (c) inspiratory time as percent of cycle time, thereby maintaining a ratio of inspiratory time to expiratory time of the patient. 5. The ventilator system of claim 1 wherein the valve has a coefficient of flow Cv greater than about 1.5. 6. The ventilator system of claim 1 wherein the valve is not closed when providing a peak inspiratory pressure to a patient. 7. The ventilator system of claim 1 wherein the valve is a solenoid valve. 8. The ventilator system of claim 1 wherein the fluid comprises water. 9. The ventilator system of claim 1 further comprising a chart providing a correction to account for a back-pressure of the valve, said correction made to the immersed length of at least one of the control ducts selected from the PIP and the PEEP control ducts. 10. The ventilator system of claim 1 wherein when a patient receives a peak inspiratory pressure, the system is configured to direct a flow of the gas in a first sequence from the pressurized gas supply to the patient interface, to the valve, through the valve, to the PIP control duct, and when the patient receives a positive end-expiratory pressure, the system is configured to direct the flow of the gas in a second sequence from the pressurized gas supply to the patient interface, to the valve, through the valve, to the PEEP control duct. 11. A ventilator system comprising: a pressurized gas supply;at least one container filled to a level with a body of fluid;a primary duct including proximal and distal ends, the proximal end adapted for connection to the pressurized gas supply, the primary duct also adapted for connection to a patient interface between the proximal and distal ends;a valve comprising at least an inlet port, a first outlet port and a second outlet port, the inlet port connected to the distal end of the primary duct;wherein the ventilator system further comprises: (i) at least one peak inspiratory pressure (PIP) control duct connected to the first outlet port of the valve and having a length immersed in the body of fluid;(ii) at least one positive end-expiratory pressure (PEEP) control duct connected to the second outlet port of the valve and having a length immersed in the body of fluid;(iii) wherein the immersed length of the PIP control duct is greater than the immersed length of the PEEP control duct; and(iv) wherein when a patient receives a peak inspiratory pressure, the system is configured to direct a flow of a gas in a first sequence from the pressurized gas supply to the patient interface, to the valve, through the valve, to the PIP control duct, and when the patient receives a positive end-expiratory pressure, the system is configured to direct the flow of the gas in a second sequence from the pressurized gas supply to the patient interface, to the valve, through the valve, to the PEEP control duct. 12. The ventilator system of claim 11 wherein at least one angled section is connected to a tip of at least one of the PIP control duct and the PEEP control duct. 13. The ventilator system of claim 11 further comprising at least one safety duct adapted for connection to the primary duct, and configured to be immersed in the body of fluid, wherein an immersed length of the safety duct is greater than the immersed length of the PIP control duct. 14. The ventilator system of claim 11 wherein a controller is communicably connected to the valve to control rate of cycling of the valve, thereby controlling number of breaths per minute of a patient, and to control at least one of (a) inspiratory time in seconds, (b) ratio of inspiratory time to expiratory time, and (c) inspiratory time as percent of cycle time, thereby maintaining a ratio of inspiratory time to expiratory time of the patient. 15. The ventilator system of claim 11 wherein the valve has a coefficient of flow Cv greater than about 1.5. 16. The ventilator system of claim 11 wherein the valve is not closed when providing a peak inspiratory pressure to a patient. 17. The ventilator system of claim 11 wherein the valve is a solenoid valve. 18. The ventilator system of claim 11 wherein the fluid comprises water. 19. The ventilator system of claim 11 further comprising a chart providing a correction to account for a back-pressure of the valve, said correction made to the immersed length of at least one of the control ducts selected from the PIP and the PEEP control ducts. 20. The ventilator system of claim 11 wherein the valve is configured to cycle between the first outlet port and the second outlet port thereby switching a flow of the gas from the inlet port to only the first outlet port and from the inlet port to only the second outlet port. 21. A method of assisting breathing of a subject selected from a group consisting of an adult, a child, an infant human being and a mammal, comprising: (i) connecting the subject to a ventilator system of claim 4;(ii) initiating a flow of a gas in the system; and(iii) monitoring number of breaths per minute delivered to the subject. 22. The method of claim 21 further comprising connecting the subject to the ventilator system using nasal prongs, a face mask or a nasal mask. 23. The method of claim 21 further comprising setting the flow of the gas at about 1 to 10 L/min for the infant human being. 24. The method of claim 21 further comprising setting the flow of the gas at about 1 to 30 L/min for the adult human being. 25. The method of claim 21 further comprising selecting the immersed lengths of the PIP and PEEP control ducts for the subject's breathing needs.