Portable assembly for emergency ventilation

• US 20040200477A1
• Filed: 03/26/2004
• Published: 10/14/2004
• Est. Priority Date: 03/26/2003
• Status: Abandoned Application

• Current Assignee: Taema (Air Liquide SA)
• Original Assignee: Taema (Air Liquide SA)
• Inventors: Kissi, Noureddine, Bleys, Christian
• Application Number:
  US10/810,299
• Publication Number:
  US 20040200477A1
• Time in Patent Office: Days
• US Class Current: 128/204.18
• CPC Class Codes: A61M 16/0677 Gas-saving devices therefor
• CPC Class Codes: A61M 16/12 by mixing different gases
• CPC Class Codes: A61M 2016/0021 with a proportional output signal, e.g. from a thermistor
• CPC Class Codes: A61M 2016/0039 in the inspiratory circuit
• CPC Class Codes: A61M 2205/8225 using incorporated gas cartridges for the driving gas

Abstract

The invention relates to a portable assembly for emergency ventilation, comprising a source (1) of compressed gas equipped with a gas pressure-reducing valve device (2) with which it is possible to control the flowrate and/or the pressure of the gas issuing from the gas source (1), a respiratory assistance ventilator (3) fed with gas by said gas source (1), and a man/machine interface (4) cooperating with said ventilator (3) so as to permit regulation of at least one ventilation parameter and/or of at least one ventilation set-point. The portable assembly according to the invention constitutes an item of equipment for respiratory aid which can be used in emergency situations, is of small size and low weight, and can be easily carried by a doctor or similar, even in places where access is difficult.

Claims

1-10. -10 (cancelled).

11. A portable assembly apparatus for emergency ventilation, comprising:

a) a source of compressed gas, wherein said compressed gas course is equipped with a gas pressure-reducing valve device to control the flowrate and the pressure of the gas issuing from said compressed gas source;

by a respiratory assistance ventilator fed with gas by said compressed gas source; and

c) a man/machine interface cooperating with said ventilator so as to permit regulation of at least one ventilation parameter and at least one ventilation set-point.

12. The apparatus according to claim 11, wherein said gas pressure-reducing valve device comprises an outlet connector to which said respiratory assistance ventilator is fixed.

13. The apparatus according to claim 11, wherein said respiratory assistance ventilator comprises an internal gas circuit forming a fluidic connection from an inlet orifice to an outlet orifice, and a proportional valve being arranged on said internal circuit, said valve being controlled by control means cooperating with said man/machine interface.

14. The apparatus according to claim 13, wherein said respiratory assistance ventilator further comprises a venturi injector arranged on said internal circuit, downstream of said proportional valve.

15. The apparatus according to claim 13, wherein said respiratory assistance ventilator further comprises a flowrate sensor and a pressure sensor for measuring the flowrate and the pressure of the gas in the internal circuit, said sensors cooperating with said control means in such a way as to permit automatic control and regulation of said proportional valve in terms of flowrate or pressure.

16. The apparatus according to claim 11, wherein said man/machine interface comprises means for regulating a ventilation set-point or parameter in order to permit selection and regulation of at least one ventilation parameter or of at least one ventilation set-point.

17. The apparatus according to claim 16, further comprising display means cooperating with said regulating means in order to make it possible to visualize and display at least one value of at least one ventilation parameter or of at least one ventilation set-point that has been selected and regulated.

18. The apparatus according to claim 13, wherein further comprising a patient circuit with at least one gas conduit connected, via its upstream end, to said outlet orifice of said ventilator and, via its downstream end, to a respiration mask.

19. The apparatus according to claim 11, wherein said pressure-reducing valve and said ventilator are protected by a protective hood fixed on said compressed gas source.

20. The apparatus according to claim 16, wherein said means for regulating a ventilation set-point or parameter permit selection and regulation of at least one ventilation parameter or of at least one ventilation set-point are selected from the group consisting of:

a) ventilation frequency;

b) ventilation flowrate;

c) ventilation volume;

d) composition of the gas mixture;

e) inhalation trigger threshold;

f) inhalation time;

g) exhalation time

h) inhalation time and exhalation time;

i) ratio of inhalation time and exhalation time;

j) positive expiratory pressure (PEP);

k) ventilation mode; and

l) maximum safety pressure.

21. The apparatus according to claim 11, wherein said pressure-reducing valve device, said respiratory assistance ventilator, and said man/machine interface cooperating with said ventilator form a compact system supported by said compressed gas source.

22. The apparatus according to claim 11, wherein said compact system is supported by an oxygen cylinder.

23. The apparatus according to claim 11, wherein the total weight is less than 25 kg.

24. The apparatus according to claim 23, wherein the total weight is less than 15 kg.

25. The apparatus according to claim 11, further comprising a carrier arrangement.

26. The apparatus according to claim 25, wherein said carrier arrangement is selected from the group consisting of:

a) backpack;

b) harness; and

c) any similar carrying means.

27. A portable assembly apparatus for emergency ventilation, comprising:

a) a source of compressed gas, wherein said compressed gas course is equipped with a gas pressure-reducing valve device to control the flowrate and the pressure of the gas issuing from said compressed gas source;

b) a respiratory assistance ventilator fed with gas by said compressed gas source; and

c) a man/machine interface cooperating with said ventilator so as to permit regulation of at least one ventilation parameter and at least one ventilation set-point,

wherein said gas pressure-reducing valve device comprises an outlet connector to which said respiratory assistance ventilator is fixed;

wherein said respiratory assistance ventilator comprises an internal gas circuit forming a fluidic connection from an inlet orifice to an outlet orifice, and a proportional valve being arranged on said internal circuit, said valve being controlled by control means cooperating with said man/machine interface;

wherein said man/machine interface comprises means for regulating a ventilation set-point or parameter in order to permit selection and regulation of at least one ventilation parameter or of at least one ventilation set-point;

wherein said pressure-reducing valve and said ventilator are protected by a protective hood fixed on said compressed gas source;

wherein said pressure-reducing valve device, said respiratory assistance ventilator, and said man/machine interface cooperating with said ventilator form a compact system supported by said compressed gas source; and

wherein said compact system is supported by an oxygen cylinder.

28. The apparatus according to claim 27, wherein the total weight is less than 15 kg, and further comprises a carrier arrangement selected from the group consisting of:

a) backpack;

b) harness; and

c) any similar carrying means.

29. A method of providing emergency ventilation to a patient comprising treating said patient with oxygen, wherein said oxygen is provided using a portable assembly comprising:

a) a source of compressed gas, wherein said compressed gas course is equipped with a gas pressure-reducing valve device to control the flowrate and the pressure of the gas issuing from said compressed gas source;

b) a respiratory assistance ventilator fed with gas by said compressed gas source; and

c) a man/machine interface cooperating with said ventilator so as to permit regulation of at least one ventilation parameter and at least one ventilation set-point.