CN219963694U - Sampling flow guiding structure of expiratory valve - Google Patents
Sampling flow guiding structure of expiratory valve Download PDFInfo
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- CN219963694U CN219963694U CN202321161153.5U CN202321161153U CN219963694U CN 219963694 U CN219963694 U CN 219963694U CN 202321161153 U CN202321161153 U CN 202321161153U CN 219963694 U CN219963694 U CN 219963694U
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- sampling
- pressure
- exhalant
- flow guiding
- rear end
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- 238000005070 sampling Methods 0.000 title claims abstract description 139
- 238000009423 ventilation Methods 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000012528 membrane Substances 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 7
- 230000029058 respiratory gaseous exchange Effects 0.000 description 8
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 208000000059 Dyspnea Diseases 0.000 description 1
- 206010013975 Dyspnoeas Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005399 mechanical ventilation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002685 pulmonary effect Effects 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 230000004202 respiratory function Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Investigating Or Analysing Biological Materials (AREA)
Abstract
The utility model discloses a sampling flow guiding structure of an exhalation valve, which comprises a sampling pipe front end and a sampling pipe rear end, wherein a front end ventilation cavity channel is arranged in the front end of the sampling pipe, and a rear end ventilation cavity channel is arranged in the rear end of the sampling pipe; one end of the front end of the sampling tube is provided with a front end buffer cavity communicated with the front end ventilation cavity channel, and one end of the rear end of the sampling tube is provided with a rear end buffer cavity communicated with the rear end ventilation cavity channel; an exhalant high-pressure sampling flow guiding component is arranged in the front end buffer cavity, and an exhalant low-pressure sampling flow guiding component is arranged in the rear end buffer cavity; the exhalant high-pressure sampling flow guiding component is communicated with the exhalant high-pressure air inlet of the sampling seat, and the exhalant low-pressure sampling flow guiding component is communicated with the exhalant low-pressure air inlet of the sampling seat. The utility model is provided with the sampling flow guiding component for guiding the sampling gas, so that the flow speed of the sampling gas is more balanced, and meanwhile, the pressure fluctuation of the sampling port is reduced, so that the measurement result is more accurate and the precision is higher, thereby realizing the accurate control of parameters.
Description
Technical Field
The utility model relates to a sampling flow guiding structure of an exhalation valve.
Background
The ventilator is a medical device capable of assisting dyspnea or supporting mechanical ventilation of a patient incapable of spontaneous breathing, and is commonly used for increasing the pulmonary ventilation of the patient, improving the respiratory function of the patient, reducing the respiratory power consumption and the like. In a breathing machine, an exhalation valve is an important component of the breathing machine, and mainly achieves the functions of flow detection, pressure monitoring, pressure control and the like of a patient in an exhalation stage.
The control mode of the breathing machine mainly comprises a pressure control mode and a flow control mode, pressure or flow data acquisition and detection are needed when the pressure control and the flow control are adopted, the airway pressure or flow data acquisition of the traditional breathing machine is achieved by directly arranging a sampling port in a ventilation cavity and then obtaining the airway pressure or flow data through a differential pressure flowmeter, however, the gas flow rate of gas in the ventilation cavity at the cavity wall and the gas flow rate in the middle of the cavity are inconsistent, meanwhile, the pressure fluctuation of the sampling port is larger, the measurement result is inaccurate, the precision is low, accurate control of parameters cannot be achieved, and the ventilation quality of the breathing machine and the experience of a patient are poor.
Disclosure of Invention
The utility model aims to provide a sampling flow guiding structure of an exhalation valve, which aims to solve the problems that the traditional sampling port sampling provided in the background art causes inaccurate measurement results and lower measurement precision, accurate control of ventilation parameters cannot be realized, ventilation quality is low and use experience of users is poor.
In order to achieve the above purpose, the present utility model provides the following technical solutions: including sampling tube and sampling seat, its characterized in that: the sampling tube comprises a front end and a rear end of the sampling tube, and the front end and the rear end of the sampling tube are communicated through a sampling diaphragm;
an exhalant high-pressure sampling flow guiding component is arranged in the front end of the sampling tube, and an exhalant low-pressure sampling flow guiding component is arranged in the rear end of the sampling tube;
the sampling seat is provided with an exhalation high-pressure air inlet and an exhalation low-pressure air inlet, the exhalation high-pressure air inlet is communicated with the exhalation high-pressure sampling flow guiding component, and the exhalation low-pressure air inlet is communicated with the exhalation low-pressure sampling flow guiding component.
Further, a front end buffer cavity is arranged in the front end of the sampling tube, and the exhalant high-pressure sampling flow guide assembly is arranged in the front end buffer cavity;
the inside rear end buffer chamber that is provided with of sampling tube rear end, exhale the low pressure sampling water conservancy diversion subassembly and set up in the rear end buffer intracavity.
Further, the front end buffer cavity is in butt joint with the rear end buffer cavity through a sampling diaphragm.
Further, the front end buffer cavity is communicated with the air inlet of the exhalation valve through a front end ventilation cavity channel arranged in the front end of the sampling tube, and the rear end buffer cavity is communicated with the air outlet through a rear end ventilation cavity channel arranged in the rear end of the sampling tube.
Further, the exhale high pressure sampling water conservancy diversion subassembly includes two mirror symmetry setting's water conservancy diversion folded plate, and two the water conservancy diversion folded plate passes through the connecting plate and connects, be located on the connecting plate, two be provided with the shutoff board between the water conservancy diversion folded plate, be provided with the passageway on the shutoff board.
Further, the front end buffer cavity is communicated with the exhale high-pressure air inlet through a channel.
Further, the flow guiding folded plate comprises a horizontal plate which is horizontally arranged, an inclined plate is obliquely arranged at the inner end of the horizontal plate, and the connecting plate is arranged at one end close to the front end of the sampling tube.
Further, the structure of the exhalant low-pressure sampling flow guiding component is the same as that of the exhalant high-pressure sampling flow guiding component, and the exhalant low-pressure sampling flow guiding component and the exhalant high-pressure sampling flow guiding component are arranged in a mirror symmetry mode.
Compared with the prior art, the utility model has the advantages that:
the utility model is provided with the sampling flow guiding component, so that the sampling port is separated from the cavity wall, and simultaneously, the sampling gas is guided, the flow velocity of the sampling gas is more balanced, meanwhile, the pressure fluctuation of the sampling port is reduced, the measurement result is more accurate, the precision is higher, thereby realizing the accurate control of parameters, the ventilation quality of the breathing machine is high, and the experience effect of a patient is better
The utility model is provided with the gas buffer cavity, so that the flow speed/pressure stability of the sampled gas can be further improved, and the measurement accuracy is improved.
Drawings
FIG. 1 is a schematic view of the overall cut-away structure of the present utility model;
FIG. 2 is a schematic view of the overall three-dimensional structure of the present utility model;
FIG. 3 is a schematic diagram of the left-view structure of the front buffer chamber of the present utility model;
FIG. 4 is an enlarged schematic view of the internal structure of the front buffer chamber according to the present utility model;
FIG. 5 is a schematic view of the left-hand structure of the rear buffer chamber of the present utility model;
FIG. 6 is a schematic diagram of the gas flow direction according to the present utility model.
In the figure: 1. the front end of the sampling tube; 11. a front end buffer chamber; 12. an exhalation valve air inlet; 15. an exhale high pressure sampling flow-guiding component; 151. a flow guiding folded plate; 152. a connecting plate; 153. a shutoff plate; 154. a channel; 16. a front ventilation channel; 2. the rear end of the sampling tube; 21. a rear end buffer chamber; 22. an air outlet; 28. an exhale low pressure sampling flow-guiding component; 29. a rear ventilation channel; 3. a sampling seat; 31. a high pressure exhalation port; 32. a low pressure exhalation port; 4. sampling a membrane; 51. a horizontal plate; 52. and a sloping plate.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-6, the present utility model provides a technical solution: the utility model provides a sampling water conservancy diversion structure of exhalation valve, includes sampling pipe and sampling seat 3, its characterized in that: the sampling tube comprises a sampling tube front end 1 and a sampling tube rear end 2, and the sampling tube front end 1 and the sampling tube rear end 2 are communicated through a sampling membrane 4.
As a preferred embodiment, the inside of the front end 1 of the sampling tube is provided with an exhalant high-pressure sampling flow guiding component 15, and the inside of the rear end 2 of the sampling tube is provided with an exhalant low-pressure sampling flow guiding component 28;
the sampling seat 3 is provided with an exhalation high-pressure air inlet 31 and an exhalation low-pressure air inlet 32, the exhalation high-pressure air inlet 31 is communicated with the exhalation high-pressure sampling flow guide assembly 15, and the exhalation low-pressure air inlet 32 is communicated with the exhalation low-pressure sampling flow guide assembly 28.
Through setting up exhale high pressure sampling water conservancy diversion subassembly 15 and exhale low pressure sampling water conservancy diversion subassembly 28 to when making the sampling mouth break away from the chamber wall, carry out the water conservancy diversion to the sampling gas, make the sampling gas velocity of flow more balanced, reduce the pressure fluctuation of sampling mouth simultaneously, make measuring result more accurate, and the precision is higher, thereby can realize the accurate control to the parameter, the breathing machine ventilation quality is high and patient's experience effect is better.
As a preferred embodiment, a front end buffer cavity 11 is arranged in the front end 1 of the sampling tube, and an expired high-pressure sampling flow guiding component 15 is arranged in the front end buffer cavity 11;
the rear end 2 of the sampling tube is internally provided with a rear end buffer cavity 21, and an expired low-pressure sampling flow guiding component 28 is arranged in the rear end buffer cavity 21.
By arranging the front end buffer cavity 11 and the rear end buffer cavity 21, the function of stabilizing air flow can be achieved, the flow speed/pressure stability of sampling gas can be improved, and the measurement accuracy can be improved.
Based on the above structure, the front end buffer chamber 11 and the rear end buffer chamber 21 are butted by the sampling diaphragm 4.
Based on the above structure, the front buffer chamber 11 is communicated with the exhalation valve air inlet 12 through a front vent chamber channel 16 arranged inside the sampling tube front end 1, and the rear buffer chamber 21 is communicated with the air outlet 22 through a rear vent chamber channel 29 arranged inside the sampling tube rear end 2.
As a preferred embodiment, the exhale high pressure sampling baffle assembly 15 comprises two baffle plates 151 arranged in mirror symmetry, and the two baffle plates 151 are connected by a connecting plate 152, a baffle plate 153 is arranged on the connecting plate 152 between the two baffle plates 151, and a channel 154 is arranged on the baffle plate 153.
Based on the above structure, the front end buffer chamber 11 communicates with the exhalation high-pressure air inlet 31 through the passage 154.
As a preferred embodiment, the flow guiding flap 151 comprises a horizontal plate 51 arranged horizontally, and the inner end of the horizontal plate 51 is provided with an inclined plate 52 in an inclined manner, and the connecting plate 152 is arranged at the end near the front end 1 of the sampling tube.
As a preferred embodiment, the structure of the exhalant low-pressure sampling flow guiding component 28 is the same as that of the exhalant high-pressure sampling flow guiding component 15, and the exhalant low-pressure sampling flow guiding component 28 and the exhalant high-pressure sampling flow guiding component 15 are arranged in a mirror symmetry manner, so that the flow guiding airflow is stable and stable, and the possibility of abnormal sound caused by unstable airflow is reduced.
In the embodiment of the utility model, the exhaled gas enters the front end ventilation cavity 16 from the exhalation valve air inlet 12, then enters the front end buffer cavity 11 to obtain steady flow, a part of the high-pressure gas is guided by the exhaled high-pressure sampling guide component 15 arranged in the front end buffer cavity 11 to enter the differential pressure type flowmeter through the sampling seat 3, the other part of the gas is reduced in pressure through the sampling diaphragm 4 and then enters the rear end buffer cavity 21 to obtain steady flow, a part of the low-pressure gas is guided by the exhaled low-pressure sampling guide component 28 arranged in the rear end buffer cavity 21 to enter the differential pressure type flowmeter through the sampling seat 3, the rest of the gas is discharged through the air outlet 22, and the differential pressure type flowmeter monitors the flow/pressure of the exhaled gas according to the pressure difference between the collected high-pressure gas and the low-pressure gas.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a sampling water conservancy diversion structure of exhalation valve, includes sampling tube and sampling seat (3), its characterized in that: the sampling tube comprises a front sampling tube end (1) and a rear sampling tube end (2), and the front sampling tube end (1) and the rear sampling tube end (2) are communicated through a sampling membrane (4);
an expired high-pressure sampling flow guiding component (15) is arranged in the front end (1) of the sampling tube, and an expired low-pressure sampling flow guiding component (28) is arranged in the rear end (2) of the sampling tube;
the sampling seat (3) is provided with an exhalant high-pressure air inlet (31) and an exhalant low-pressure air inlet (32), the exhalant high-pressure air inlet (31) is communicated with the exhalant high-pressure sampling flow guiding component (15), and the exhalant low-pressure air inlet (32) is communicated with the exhalant low-pressure sampling flow guiding component (28).
2. The sampling baffle structure of an exhalation valve as recited in claim 1, wherein: a front end buffer cavity (11) is arranged in the front end (1) of the sampling tube, and the exhalant high-pressure sampling flow guide assembly (15) is arranged in the front end buffer cavity (11);
the inside rear end buffer chamber (21) that is provided with of sampling tube rear end (2), exhale low pressure sampling water conservancy diversion subassembly (28) and set up in rear end buffer chamber (21).
3. The sampling baffle structure of an exhalation valve as recited in claim 2, wherein: the front end buffer cavity (11) is in butt joint with the rear end buffer cavity (21) through the sampling diaphragm (4).
4. A sampling flow-guiding structure for an exhalation valve according to claim 3, characterized in that: the front end buffer cavity (11) is communicated with the air inlet (12) of the exhalation valve through a front end ventilation cavity channel (16) arranged in the front end (1) of the sampling tube, and the rear end buffer cavity (21) is communicated with the air outlet (22) through a rear end ventilation cavity channel (29) arranged in the rear end (2) of the sampling tube.
5. The sampling baffle structure of an exhalation valve as recited in claim 2, wherein: the exhale high pressure sampling water conservancy diversion subassembly (15) include two mirror symmetry guide flap (151) that set up, and two guide flap (151) are connected through connecting plate (152), on connecting plate (152), be located two be provided with shutoff board (153) between guide flap (151), be provided with passageway (154) on shutoff board (153).
6. The sampling baffle structure of an exhalation valve as recited in claim 4, wherein: the front end buffer cavity (11) is communicated with the exhale high-pressure air inlet (31) through a channel (154).
7. The sampling baffle structure of an exhalation valve of claim 5, wherein: the flow guiding folded plate (151) comprises a horizontal plate (51) which is horizontally arranged, an inclined plate (52) is obliquely arranged at the inner end of the horizontal plate (51), and the connecting plate (152) is arranged at one end close to the front end (1) of the sampling tube.
8. The sampling baffle structure of an exhalation valve as recited in claim 2, wherein: the structure of the exhalant low-pressure sampling flow guiding component (28) is the same as that of the exhalant high-pressure sampling flow guiding component (15), and the exhalant low-pressure sampling flow guiding component (28) and the exhalant high-pressure sampling flow guiding component (15) are arranged in a mirror symmetry mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321161153.5U CN219963694U (en) | 2023-05-15 | 2023-05-15 | Sampling flow guiding structure of expiratory valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321161153.5U CN219963694U (en) | 2023-05-15 | 2023-05-15 | Sampling flow guiding structure of expiratory valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219963694U true CN219963694U (en) | 2023-11-07 |
Family
ID=88579322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321161153.5U Active CN219963694U (en) | 2023-05-15 | 2023-05-15 | Sampling flow guiding structure of expiratory valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219963694U (en) |
-
2023
- 2023-05-15 CN CN202321161153.5U patent/CN219963694U/en active Active
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