Apparatus and method to provide breathing support
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61M-016/20
A61M-016/00
A61M-016/10
출원번호
US-0468320
(2014-08-25)
등록번호
US-9345850
(2016-05-24)
발명자
/ 주소
Sardesai, Rajendra Gurudas
Ramanathan, Rangasamy
출원인 / 주소
EUPNEA TECHNOLOGIES, INC.
대리인 / 주소
Sardesai, Rajendra
인용정보
피인용 횟수 :
0인용 특허 :
22
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 two containers comprising a first container comprising a body of fluid and a second 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
1. A ventilator system comprising: a pressurized gas supply;at least two containers comprising a first container comprising a body of fluid and a second 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 three-port valve comprising one 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 in the first container;(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 in the second container;(iii) wherein the immersed length of the PIP control duct in the first container is greater than the immersed length of the PEEP control duct in the second container; and(iv) wherein the three-port valve is configured to cycle between the first outlet port and the second outlet port thereby switching 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 the level of fluid in the first container is different from the level of fluid in the second container. 3. The ventilator system of claim 2 wherein a size and shape of the first container is similar to a size and shape of the second container and a location of a tip of the PIP control duct in the first container is similar to a location of a tip of the PEEP control duct in the second container. 4. 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. 5. 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 in the first container, wherein the immersed length of the safety duct is greater than the immersed length of the PIP control duct. 6. The ventilator system of claim 5 wherein a size and shape of the first container is similar to a size and shape of the second container and a location of a tip of the PIP control duct in the first container is similar to a location of a tip of the PEEP control duct in the second container. 7. The ventilator system of claim 5 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. 8. 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 inspiration time to expiration time of the patient. 9. The ventilator system of claim 1 wherein the valve has a coefficient of flow Cv greater than about 1.5. 10. The ventilator system of claim 1 wherein the three-port valve is not closed when providing peak inspiratory pressure to a patient. 11. The ventilator system of claim 1 wherein the valve is a solenoid valve. 12. The ventilator system of claim 1 wherein the fluid comprises water. 13. The ventilator system of claim 1 further comprising a chart providing a correction to account for back pressure of the valve, said correction made to the immersed length of PIP and/or PEEP control ducts. 14. The ventilator system of claim 1 wherein when a patient receives a peak inspiratory pressure, the system is configured to direct flow of the gas in a first sequence from the pressurized gas supply to the patient interface, to the three-port valve, through the three-port valve, to the PIP control duct, and when the patient receives a positive end-expiratory pressure, the system is configured to direct flow of the gas in a second sequence from the pressurized gas supply to the patient interface, to the three-port valve, through the three-port valve, to the PEEP control duct. 15. The ventilator system of claims 1 wherein a cycle corresponds to one breath consisting of switching flow of the gas from the inlet port to only the PIP control duct connected to the first outlet port and from the inlet port to only the PEEP control duct connected to the second outlet port. 16. A ventilator system comprising: a pressurized gas supply;at least two containers comprising a first container comprising a body of fluid and a second container comprising 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 three-port valve comprising one 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 having a length immersed in the body of fluid in the first container;(ii) at least one positive end-expiratory pressure (PEEP) control duct connected to the second outlet port of the valve having a length immersed in the body of fluid in the second container;(iii) wherein the immersed length of the PIP control duct in the first container is greater than the immersed length of the PEEP control duct in the second container;(iv) wherein the valve is configured to cycle between the first outlet port and the second outlet port thereby switching 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;(v) wherein the valve is not closed when providing peak inspiratory pressure to a patient; and(vi) wherein when the patient receives a peak inspiratory pressure, the system is configured to direct flow of the gas in a first sequence from the pressurized gas supply to the patient interface, to the three-port valve, through the three-port valve, to the PIP control duct, and when the patient receives a positive end-expiratory pressure, the system is configured to direct flow of the gas in a second sequence from the pressurized gas supply to the patient interface, to the three-port valve, through the three-port valve, to the PEEP control duct. 17. The ventilator system of claim 16 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 inspiration time to expiration time of the patient. 18. The ventilator system of claim 16 wherein the valve is a solenoid valve. 19. The ventilator system of claim 16 wherein the fluid comprises water.
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