CN113413527B - Breathing module oxygen mixing device for portable universal life support system - Google Patents
Breathing module oxygen mixing device for portable universal life support system Download PDFInfo
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- CN113413527B CN113413527B CN202110682160.9A CN202110682160A CN113413527B CN 113413527 B CN113413527 B CN 113413527B CN 202110682160 A CN202110682160 A CN 202110682160A CN 113413527 B CN113413527 B CN 113413527B
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- oxygen
- turbine
- flow rate
- mixed gas
- oxygen mixing
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 116
- 239000001301 oxygen Substances 0.000 title claims abstract description 116
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 116
- 230000029058 respiratory gaseous exchange Effects 0.000 title claims abstract description 24
- 239000007789 gas Substances 0.000 claims abstract description 73
- 238000009423 ventilation Methods 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims 2
- 238000012544 monitoring process Methods 0.000 claims 1
- 208000004756 Respiratory Insufficiency Diseases 0.000 description 2
- 201000004193 respiratory failure Diseases 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/1005—Preparation of respiratory gases or vapours with O2 features or with parameter measurement
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- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Sampling And Sample Adjustment (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The invention discloses a breathing module oxygen mixing device for a portable universal life support system, which comprises an oxygen mixing cavity and a main controller, wherein the oxygen mixing cavity is provided with an oxygen inlet, an air inlet and a mixed gas outlet; the oxygen inlet is close to the mixed gas outlet, and the air inlet is far away from the mixed gas outlet; and a labyrinth structure is arranged in the oxygen mixing cavity. The labyrinth structure arranged in the oxygen mixing cavity can temporarily store oxygen when the flow extracted by the turbine is adjusted, so that the gas extracted by the turbine can be all oxygen, and the breathing module outputs gas with 100% oxygen concentration.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a breathing module oxygen mixing device for a portable universal life support system.
Background
In modern clinical medicine, a ventilator has been widely used in respiratory failure due to various reasons, anesthesia and breathing management during major surgery, respiratory support therapy and emergency resuscitation as an effective means for manually replacing the function of spontaneous ventilation, and has a very important position in the modern medical field. The breathing machine is a vital medical device which can prevent and treat respiratory failure, reduce complications and save and prolong the life of a patient.
The portable universal life support system breathing module adapted to the field environment can provide gas with different oxygen concentrations for a patient, oxygen is sourced from an oxygen source, the flow of the oxygen is controlled by a proportional valve, and the oxygen accurately controlled by the proportional valve and the air in the environment are transmitted to a downstream part by a turbine to be used by the patient. Through the control of the proportional valve and the turbine, gases with different oxygen concentrations can be output. However, if it is necessary to provide a gas with an oxygen concentration of 100%, the gas extracted by the turbine must be entirely oxygen, and cannot be doped with air. However, due to the delay of the control and the error of the flow sensor, the flow rate of the gas extracted by the turbine cannot be guaranteed to be the same as the flow rate of the gas delivered by the proportional valve, and the output of the gas with the oxygen concentration of 100% cannot be guaranteed.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a breathing module oxygen mixing device for a portable universal life support system, so as to solve the problem that the breathing module of the portable universal life support system cannot ensure that the gas with 100% oxygen concentration is output, so that the gas extracted by a turbine can be all oxygen, and the breathing module outputs the gas with 100% oxygen concentration.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows.
The breathing module oxygen mixing device for the portable universal life support system comprises an oxygen mixing cavity and a main controller, wherein the oxygen mixing cavity is provided with an oxygen inlet, an air inlet and a mixed gas outlet, the oxygen inlet is provided with a proportional valve for controlling the oxygen flow, the mixed gas outlet is provided with a turbine, and the controlled ends of the turbine and the proportional valve are respectively connected with the output end of the main controller; the oxygen inlet is close to the mixed gas outlet, and the air inlet is far away from the mixed gas outlet; the inside of mixing oxygen cavity is provided with can keep in oxygen and make the breathing module export 100% oxygen concentration gaseous labyrinth structure.
According to the technical scheme, the labyrinth structure comprises a plurality of lower baffle plates which are arranged at the bottom end of the inner wall of the oxygen mixing cavity at intervals upwards and a plurality of upper baffle plates which are arranged at the top end of the inner wall of the oxygen mixing cavity at intervals downwards, and a gas flow channel is formed between the adjacent lower baffle plates and the upper baffle plates.
Further optimize technical scheme, the oxygen entry is provided with the oxygen flow sensor who is used for detecting oxygen flow, and the input in main control unit is connected to oxygen flow sensor's output.
According to the technical scheme, one side of the air inlet is communicated with an air ventilation cavity communicated with the outside atmosphere.
According to the technical scheme, a total flow sensor used for detecting the total flow of mixed gas at the mixed gas outlet is arranged at the mixed gas outlet positioned on the rear side of the turbine, and the output end of the total flow sensor is connected to the input end of the main controller.
Due to the adoption of the technical scheme, the technical progress of the invention is as follows.
The invention can ensure that all the gas extracted by the turbine can be oxygen, and the breathing module outputs gas with 100% oxygen concentration. The labyrinth structure arranged in the oxygen mixing cavity can temporarily store oxygen when the flow extracted by the turbine is adjusted, so that when the gas flow conveyed by the oxygen inlet is larger than the gas flow output by the mixed gas outlet, the oxygen can move to the air inlet along the labyrinth structure, and when the gas flow conveyed by the oxygen inlet is smaller than the gas flow output by the mixed gas outlet, the oxygen temporarily stored in the labyrinth structure can be output from the mixed gas outlet, thereby ensuring that the breathing module outputs 100% oxygen concentration gas.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram of the present invention.
Wherein: 1. oxygen inlet 2, air inlet 3, oxygen mixing cavity 4, mixed gas outlet 5, labyrinth structure 51, upper baffle plate 52, lower baffle plate 6, air ventilation cavity 7, oxygen source 8, proportional valve 9, oxygen flow sensor 10, turbine 11 and total flow sensor.
Detailed Description
The invention will be described in further detail below with reference to the figures and specific examples.
The portable breathing module oxygen mixing device for the general life support system is shown in fig. 1 to fig. 2, and comprises an oxygen mixing cavity 3, wherein an oxygen inlet 1, an air inlet 2 and a mixed gas outlet 4 are arranged on the oxygen mixing cavity 3.
The oxygen source 1 is communicated with the oxygen source 7, the oxygen inlet 1 is provided with a proportional valve 8 for controlling the oxygen flow, the mixed gas outlet 4 is provided with a turbine 10, and the controlled ends of the turbine and the proportional valve are respectively connected with the output end of the main controller.
The oxygen inlet 1 is close to the mixed gas outlet 4, and the air inlet 2 is far away from the mixed gas outlet 4, so that oxygen can be conveniently conveyed to the mixed gas outlet 4.
Mix the inside of oxygen cavity 3 and be provided with labyrinth structure 5, have one section appearance chamber of labyrinth structure stroke between oxygen entry and the air inlet, labyrinth structure 5 can keep in oxygen to make the breathing module output 100% oxygen concentration gas.
The labyrinth structure 5 comprises a plurality of lower baffle plates 52 and a plurality of upper baffle plates 51, wherein the lower baffle plates 52 are arranged at the bottom end of the inner wall of the oxygen mixing cavity 3 at intervals upwards, and the upper baffle plates 51 are arranged at the top end of the inner wall of the oxygen mixing cavity 3 at intervals downwards. A gas flow passage is formed between the adjacent lower baffle plate 52 and the upper baffle plate 51.
The oxygen inlet 1 is provided with an oxygen flow sensor 9 for detecting the oxygen flow, and the output end of the oxygen flow sensor is connected with the input end of the main controller.
A total flow sensor 11 for detecting the total flow of the mixed gas at the mixed gas outlet 4 is arranged at the mixed gas outlet 4 at the rear side of the turbine, and the output end of the total flow sensor is connected to the input end of the main controller.
The mixed gas outlet 4 is connected with a turbine air inlet, and a turbine air outlet is connected with a total flow sensor.
One side of the air inlet 2 is communicated with an air ventilation cavity 6 communicated with the outside atmosphere.
When the breathing module works, according to an oxygen concentration value set by the main controller, the proportional valve and the oxygen flow sensor output oxygen with a certain flow through feedback control, the oxygen enters the oxygen mixing cavity through the proportional valve, the turbine at the downstream of the mixed gas outlet can suck the oxygen in the oxygen mixing cavity and a part of air entering the oxygen mixing cavity from the air inlet into the mixed gas cavity to be uniformly mixed, and then the mixed gas is sent to the downstream, meanwhile, the total flow rate is monitored through the total flow sensor, the total flow sensor feeds detection information back to the main controller, and the main controller calculates the current oxygen concentration.
When the oxygen concentration of 100% needs to be controlled, the gas extracted by the turbine must be completely oxygen output by the proportional valve, but due to the delay of control and the error of the flow sensor, the gas flow rate a extracted by the turbine cannot be guaranteed to be the same as the gas flow rate b delivered by the proportional valve, and the gas flow rate a always floats up and down on the gas flow rate b with continuous feedback control.
When the gas b delivered by the proportional valve is larger than the flow rate a1 extracted by the turbine, the redundant gas flows towards the air inlet, and because the cavity formed by the labyrinth structure is arranged between the oxygen inlet and the air inlet, the oxygen cannot be immediately discharged from the air inlet, and the redundant air can be discharged from the air inlet. When the total flow sensor detects that the flow rate a1 extracted by the turbine is smaller than the flow rate b controlled by the proportional valve, the flow rate a1 extracted by the turbine is increased, the flow rate extracted by the turbine is increased from a1 to a2, the flow rate a2 extracted by the turbine is larger than the flow rate b provided by the proportional valve, the gas in the labyrinth structure in the oxygen mixing device is extracted into the turbine, and because the gas in the labyrinth structure is the oxygen which is discharged from the oxygen inlet more at the beginning, the gas in the oxygen mixing device can be ensured to be pure oxygen of 100 percent although the gas in the oxygen mixing device is extracted by the turbine.
Then, because the flow rate a2 extracted by the turbine is larger than the flow rate b provided by the proportional valve, the main controller reduces the flow rate extracted by the turbine from a2 to a1, and the redundant gas flows to the air inlet direction again, and increases the flow rate extracted by the turbine from a1 to a2, and the circulation is performed sequentially.
The flow rate a extracted by the turbine is repeatedly adjusted according to the steps, so that the accuracy of the control of the 100% oxygen concentration is ensured.
Claims (5)
1. Portable general life support system mixes oxygen device with breathing module, its characterized in that: the oxygen mixing device comprises an oxygen mixing cavity (3) and a main controller, wherein an oxygen inlet (1), an air inlet (2) and a mixed gas outlet (4) are formed in the oxygen mixing cavity (3), a proportional valve used for controlling oxygen flow is arranged on the oxygen inlet (1), a turbine is arranged at the mixed gas outlet (4), and controlled ends of the turbine and the proportional valve are respectively connected to the output end of the main controller; the oxygen inlet (1) is close to the mixed gas outlet (4), and the air inlet (2) is far away from the mixed gas outlet (4); a labyrinth structure (5) capable of temporarily storing oxygen and enabling the breathing module to output gas with 100% oxygen concentration is arranged in the oxygen mixing cavity (3);
when the gas b delivered by the proportional valve is larger than the flow rate a1 extracted by the turbine, the redundant gas flows to the direction of the air inlet, and the redundant air is discharged from the air inlet; monitoring that the flow rate a1 extracted by the turbine is smaller than the flow rate b controlled by the proportional valve, the flow rate a1 extracted by the turbine is increased, the flow rate extracted by the turbine is increased from a1 to a2, and the flow rate a2 extracted by the turbine is larger than the flow rate b provided by the proportional valve, so that the gas in the labyrinth structure in the oxygen mixing device is extracted into the turbine;
the main controller reduces the flow rate of the turbine extraction from a2 to a1, the redundant gas flows to the air inlet direction again, and the flow rate of the turbine extraction is increased from a1 to a2, and the circulation is performed sequentially.
2. The portable breathing module oxygen mixing device for a universal life support system according to claim 1, wherein: the labyrinth structure (5) comprises a plurality of lower baffle plates (52) which are arranged at the bottom end of the inner wall of the oxygen mixing cavity (3) at intervals upwards and a plurality of upper baffle plates (51) which are arranged at the top end of the inner wall of the oxygen mixing cavity (3) at intervals downwards, and a gas flow channel is formed between the adjacent lower baffle plates (52) and the upper baffle plates (51).
3. The portable breathing module oxygen mixing device for a universal life support system according to claim 1, wherein: the oxygen inlet (1) is provided with an oxygen flow sensor for detecting oxygen flow, and the output end of the oxygen flow sensor is connected with the input end of the main controller.
4. The portable breathing module oxygen mixing device for a universal life support system according to claim 1, wherein: and one side of the air inlet (2) is communicated with an air ventilation cavity (6) communicated with the outside atmosphere.
5. The portable breathing module oxygen mixing device for a universal life support system according to claim 1, wherein: and a total flow sensor for detecting the total flow of the mixed gas at the mixed gas outlet (4) is arranged at the mixed gas outlet (4) positioned at the rear side of the turbine, and the output end of the total flow sensor is connected to the input end of the main controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110682160.9A CN113413527B (en) | 2021-06-20 | 2021-06-20 | Breathing module oxygen mixing device for portable universal life support system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110682160.9A CN113413527B (en) | 2021-06-20 | 2021-06-20 | Breathing module oxygen mixing device for portable universal life support system |
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| CN113413527A CN113413527A (en) | 2021-09-21 |
| CN113413527B true CN113413527B (en) | 2022-04-12 |
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| CN202110682160.9A Active CN113413527B (en) | 2021-06-20 | 2021-06-20 | Breathing module oxygen mixing device for portable universal life support system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201668828U (en) * | 2010-05-28 | 2010-12-15 | 上海德尔格医疗器械有限公司 | Fluid-buffering unit for anaesthesia apparatuses |
| CN110464939A (en) * | 2019-08-13 | 2019-11-19 | 湖南明康中锦医疗科技发展有限公司 | Breathing Suppotion equipment oxygen concentration control device and method |
| CN213077099U (en) * | 2020-06-30 | 2021-04-30 | 南京舒普思达医疗设备有限公司 | Air-oxygen mixing module for breathing machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2830577B1 (en) * | 2001-10-10 | 2004-03-05 | Taema | TWO-STAGE COMPRESSOR IN PARTICULAR FOR A BREATHING APPARATUS |
| US20120060841A1 (en) * | 2010-09-15 | 2012-03-15 | Newport Medical Instruments, Inc. | Oxygen enrichment device for ventilator |
-
2021
- 2021-06-20 CN CN202110682160.9A patent/CN113413527B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201668828U (en) * | 2010-05-28 | 2010-12-15 | 上海德尔格医疗器械有限公司 | Fluid-buffering unit for anaesthesia apparatuses |
| CN110464939A (en) * | 2019-08-13 | 2019-11-19 | 湖南明康中锦医疗科技发展有限公司 | Breathing Suppotion equipment oxygen concentration control device and method |
| CN213077099U (en) * | 2020-06-30 | 2021-04-30 | 南京舒普思达医疗设备有限公司 | Air-oxygen mixing module for breathing machine |
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| CB03 | Change of inventor or designer information |
Inventor after: Li Huifeng Inventor after: Guo Jikai Inventor after: Wang Wanhui Inventor before: Li Huifeng Inventor before: Lin Shupi Inventor before: Guo Jikai Inventor before: Wang Wanhui |
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