CN2319062Y

CN2319062Y - Circulating helium-oxygen mixing auxiliary breathing appts.

Info

Publication number: CN2319062Y
Application number: CN 97227817
Authority: CN
Inventors: 刘又宁; 解立新; 马迎民
Original assignee: Chinese PLA General Hospital
Current assignee: Chinese PLA General Hospital
Priority date: 1997-09-26
Filing date: 1997-09-26
Publication date: 1999-05-19
Anticipated expiration: 2007-09-26

Abstract

The utility model relates to an assisted ventilation unit which is used for treating grave asthma and respiratory failure. The unit adopts a closed breathing loop for the recirculation and the utilization of helium; after patients inhales the helium mixed gases, exhalant carbon dioxide is filtered and removed through a sodium hydroxide tank and enters an inhaling loop. The change of oxygen concentration is monitored the concentration of inhaled oxygen on the position of a 'Y'-shaped tube closing patients. Small amount of the oxygen and the helium is flow valve added as required through a flow valve. The utility model can save the consumption of the helium, can reduce the consumption of breath, can enhance lung compliance, can promote oxygenation, can enhance the partial pressure of the blood oxygen of arteries and can promote the elimination of carbon dioxide in bodies.

Description

Circulating helium-oxygen gas mixture assisted respirator

This utility model relates to a kind of assisted ventilation unit for the treatment of severe asthma and respiratory failure, particularly a kind of circulating helium-oxygen gas mixture assisted respirator.

Conventional MV via intubation is as the last effective means of treatment serious symptom bronchial asthma and respiratory failure, but because of the positive airway pressure modes that adopt more, disagree for the physiological characteristics of negative pressure ventilation with human initiatively breathing own, the respiratory failure patient exists dynamic lung excessively to inflate (DH) more in addition, so in the conventional mechanical ventilation therapeutic process, the volume that is difficult to avoid causing because of positive airway pressure is hindered, air pressure injures cardiovascular system, liver, though the infringement people of renal function have developed such as PRVCV, MMV, novel ventilating mode such as VSV, but still be difficult to avoid the complication of mechanical ventilation.Though the wide clinical application respirator carries out the early stage respiratory failure of nose (face) cover therapeutic compression at present in addition, but because factors such as inspiration trigger difficulty, carbon dioxide delay, man-machine antagonism, clinical therapeutic efficacy is also unsatisfactory, especially the patient who merges the high carbon dioxide mass formed by blood stasis often may increase the weight of patient's the state of an illness on the contrary.Helium is a kind of micromolecule noble gas, have characteristics such as obviously to reduce airway pressure, promotion oxygenate and carbon dioxide are got rid of, reduction inspiratory driving pressure power, reduction breathing power consumption, helium and oxygen mix form helium-oxygen gas mixture, having in application has remarkable advantages aspect wound and no-wound mechanical ventilation treatment serious symptom bronchial asthma and the respiratory failure illness, can reduce MV via intubation patient's complication, promote patient's off line as early as possible; Promote early stage respiratory failure row no-wound mechanical ventilation treatment patient gas exchange, promote oxygenate and carbon dioxide to get rid of, thereby avoided the wound mechanical ventilation treatment.But, limited it in Clinical Application because helium costs an arm and a leg.

The purpose of this utility model is a kind of assisted respirator that reuses helium of development, it is circulating helium-oxygen gas mixture assisted respirator, this device both can connect the treatment that is applied to the MV via intubation patient with respirator, also can use (or the connection respirator provides special assisted ventilation mode) separately by patient's inspiration trigger, carry out the no-wound mechanical ventilation treatment.

Feature of the present utility model is: a patient respiratory interface (19) connects with a flow transducer (21), expiratory valve (18), sodium hydroxide filter tank (18) successively through the air tube pipeline, and the other end of sodium hydroxide filter tank connects with a folding capsule (12) through a pipeline; An oxygen interface and the helium interface is received " Y " type pipeline respectively through a flow valve two ends, the other end of " Y " type pipe and the pipeline between sodium hydroxide filter tank and the folding capsule join; The outlet of folding capsule connects with an inspiratory valve (17) through a pipeline, through the another port of flap valve, again through an oxygen probe (7), an artificial nose (22), a respiration parameter with suck air carbon dioxide dividing potential drop monitoring device (28) and connect with patient respiratory interface (19).

The utility model has the advantages that:

1. this device reuses helium by closed loop, uses through clinical principium, and the consumption that can save helium greatly has a good application prospect.

2. by sucking helium-oxygen gas mixture, can reduce airway pressure, air flue choke rapidly, reduce and breathe power consumption, improve lung compliance.

3. can promote oxygenate, improve arterial partial pressure of oxygen, promote that carbon dioxide is got rid of in the body.

By circulating helium-oxygen gas mixture assisted respirator treatment serious symptom bronchial asthma and respiratory failure patient, make the MV via intubation patient reduce the mechanical ventilation complication, and impel patient's rehabilitation off line early as early as possible.Can think that this method can become one of effective treatment means without any side effects for the treatment of from now on such illness.

Below in conjunction with accompanying drawing this utility model is further specified:

Fig. 1 is this utility model principle schematic;

Fig. 2 is this utility model structural representation.

Wherein:

1. check valve 2. air relief valve

3. helium block valve 4. oxygen gauges

5. helium pressure table 6. effusion meter

7. oxygen probe 8. manual leather bags

9. valve 10. permutatoies are closed in hemicompact

11. overflow valve 12. bellows are integrated

13. sodium hydroxide filter tank 14. quick oxygen supplys

15. airway pressure gauge 16. force samples mouths

17. inspiratory valve 18. expiratory valves

19. patient end 20. water collectors

21. flow transducer 22. artificial noses

23. respiration parameter and suction air carbon dioxide dividing potential drop monitoring device

This device adopts airtight breathing circuit to make oxygen be able to the repetitive cycling utilization.After the patient sucks helium-oxygen gas mixture, carbon dioxide by sodium hydroxide jar filtering exhalation, and enter once more in the air-breathing loop, according to the oxygen concentration variation of the fraction of inspired oxygen monitoring device monitoring that is connected nearly patient's Y-piece place, connecing needs mend into minor amounts of oxygen and helium by flow valve.After gas enters folding capsule, can be by the patient by nose (face) cover inspiration trigger, make gas enter air-breathing loop, also can link to each other with multi-function ventilator by assisted respirator respirator interface, utilize the various ventilating mode of respirator, respiration parameter (the respiratory frequency that connects the detection of respiration parameter monitoring device by nearly patient's Y-piece place, tidal volume, minute ventilation volume) regulates respirator, carry out unit's wound or wound mechanical ventilation is arranged, in respiratory, adopt artificial nose that the patient is carried out self heating and moistening, and can regularly in the MV via intubation patient airway, splash into the normal saline of heating on a small quantity, to reach the purpose of humidifying air flue.

This device can be used separately, carry out no-wound mechanical ventilation by patient's per nasal (face) cover inspiration trigger, also can be connected with multi-function ventilator by the respirator interface, control by respirator, circulation of qi promoting cannula mechanical ventilation or noinvasive pressurization assisted respiartion, respiration parameter is regulated by the respiration parameter monitoring device that is connected nearly patient's Y-piece place.

Claims

1. circulating helium-oxygen gas mixture assisted respirator, it is characterized in that: a patient respiratory interface (19) connects with a flow transducer (21), expiratory valve (18), sodium hydroxide filter tank (13) successively through corrugated hose, and the other end of sodium hydroxide filter tank connects with a folding capsule (12) through a pipeline; An oxygen interface and the helium interface is received " Y " type pipeline respectively through a flow valve two ends, the other end of " Y " type pipe and the pipeline between sodium hydroxide filter tank and the folding capsule join; The outlet of folding capsule connects with an inspiratory valve (17) through a pipeline, through the another port of flap valve, again through an oxygen probe (7), an artificial nose (22), a respiration parameter with suck air carbon dioxide dividing potential drop monitoring device (23) and connect with patient respiratory interface (19).