CN219783456U - Air-oxygen mixing device of medical breathing machine - Google Patents
Air-oxygen mixing device of medical breathing machine Download PDFInfo
- Publication number
- CN219783456U CN219783456U CN202320937170.7U CN202320937170U CN219783456U CN 219783456 U CN219783456 U CN 219783456U CN 202320937170 U CN202320937170 U CN 202320937170U CN 219783456 U CN219783456 U CN 219783456U
- Authority
- CN
- China
- Prior art keywords
- air
- cavity
- fan
- shell
- oxygen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000001301 oxygen Substances 0.000 title claims abstract description 105
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 105
- 230000029058 respiratory gaseous exchange Effects 0.000 title claims abstract description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 60
- 238000001514 detection method Methods 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 238000004891 communication Methods 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000005452 bending Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 18
- 239000000203 mixture Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000000241 respiratory effect Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 1
- 208000004756 Respiratory Insufficiency Diseases 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 201000004193 respiratory failure Diseases 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
Landscapes
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The utility model relates to an air-oxygen mixing device of a medical breathing machine, wherein an upper diversion channel and an upper cavity are arranged in a first shell, a lower diversion channel and a lower cavity are arranged in a second shell, the first shell is in sealing connection with the second shell, the upper diversion channel and the lower diversion channel are correspondingly connected to form a bent air-oxygen mixing air inlet channel, the upper cavity and the lower cavity are correspondingly connected to form a containing cavity, a fan assembly is arranged in the containing cavity, the containing cavity is provided with a cavity air inlet which is communicated with the air-oxygen mixing air inlet channel, the output end of the air-oxygen mixing air inlet channel is provided with a flow detection element, the cavity air inlet is provided with an oxygen concentration sensor, the containing cavity is provided with a cavity air outlet, the second shell is provided with a shell air outlet, and the cavity air outlet is communicated with the shell air outlet. According to the utility model, the travel of the air-oxygen mixing air passage can be increased under the condition of not increasing the volume of the respirator, the air-oxygen mixing uniformity is improved, and the accurate regulation and control of the oxygen concentration is realized.
Description
Technical Field
The utility model relates to the field of respirators, in particular to an air-oxygen mixing device of a medical respirator.
Background
In modern clinical medicine, a ventilator is commonly used as an effective means capable of replacing the autonomous ventilation function of a patient in the processes of respiratory failure caused by various reasons, anesthesia respiratory management during major operations, respiratory support treatment, emergency resuscitation and the like, and has a very important role in the field of modern medicine, and currently, the ventilator has become a vital medical device capable of saving and prolonging the life of the patient. The air and oxygen are required to be mixed in a certain proportion in the operation principle of the breathing machine and then output to a patient, so that an air-oxygen mixing device is arranged in the breathing machine for mixing the air and the oxygen, the oxygen concentration after the oxygen and the air are mixed is detected and regulated, the air channel of the conventional breathing machine for mixing the air and the oxygen is too short due to the volume limitation of the breathing machine, the condition that the air which is not fully mixed is output to the patient after the oxygen concentration sensor detects the oxygen concentration easily occurs, and the problems of relatively poor mixing uniformity, inaccurate oxygen concentration regulation and the like exist.
Disclosure of Invention
The utility model aims to provide an air-oxygen mixing device of a medical breathing machine, which can increase the travel of an air-oxygen mixing airway without increasing the volume of the breathing machine, improve the uniformity of air-oxygen mixing and realize accurate regulation and control of oxygen concentration.
The aim of the utility model is realized by the following technical scheme:
the utility model provides a medical ventilator air-oxygen mixing device, includes first casing, second casing and fan subassembly, wherein is equipped with water conservancy diversion passageway and last cavity in the first casing, is equipped with water conservancy diversion passageway and cavity down in the second casing, first casing and second casing sealing connection, and go up water conservancy diversion passageway and correspond the air-oxygen mixture admission passage that links up formation bending down, be equipped with the oxygen air inlet on the first casing with go up water conservancy diversion passageway intercommunication, be equipped with the air inlet on the second casing with water conservancy diversion passageway intercommunication down, go up the cavity and link up the formation holding chamber with the fan subassembly is located in the holding chamber, the holding chamber be equipped with the cavity air inlet with air-oxygen mixture admission passage intercommunication, and the output of air-oxygen mixture admission passage is equipped with flow detection element, the cavity air inlet is equipped with oxygen concentration sensor, the holding chamber is equipped with the cavity gas outlet, the second casing is equipped with the casing gas outlet, just the cavity gas outlet and casing gas outlet intercommunication.
The fan assembly comprises a fan, a third shell and a fourth shell, wherein the third shell and the fourth shell are in sealing connection to form a fan bin, the fan bin is arranged in the accommodating cavity, the fan is arranged in the fan bin, a fan bin air inlet is formed in the third shell and communicated with the inside of the accommodating cavity, a fan air inlet and a fan air outlet are formed in the fan, and the fan air outlet extends out of the fan bin and then is connected with the cavity air outlet.
The fan is arranged on a fan support, a fan support supporting leg is arranged on the lower side of the fan support, and a fan support fixing column matched with the fan support supporting leg is arranged in the fourth shell.
The flow detection element comprises an air resistance assembly and a pressure difference sensor, wherein the air resistance assembly comprises an air resistance grid, a first communication port and a second communication port which are arranged on the air resistance grid, an air resistance clamping groove is arranged at the output end of the air-oxygen mixed air inlet channel, the air resistance grid is arranged on the air resistance clamping groove, the first communication port and the second communication port are respectively arranged on two sides of the air resistance clamping groove, the pressure difference sensor is arranged on the first shell, and a pressure first detection port and a pressure second detection port are arranged on the pressure difference sensor, wherein the pressure first detection port is connected with the first communication port, and the pressure second detection port is connected with the second communication port.
And an oxygen concentration sensor clamping groove for installing the oxygen concentration sensor is formed in the cavity air inlet of the accommodating cavity.
The second shell is provided with an air outlet cavity, and the cavity air outlet of the accommodating cavity and the shell air outlet are communicated with the air outlet cavity.
The first shell is provided with a first oxygen inlet and a second oxygen inlet.
A housing seal is disposed between the first housing and the second housing.
The cavity air outlet and the shell air outlet are integrally arranged with the shell sealing piece.
The utility model has the advantages and positive effects that:
1. according to the utility model, the upper diversion channel in the first shell and the lower diversion channel in the second shell are correspondingly connected to form the bent air-oxygen mixing air inlet channel, so that the air-oxygen mixing stroke can be greatly prolonged, the air and oxygen are ensured to be fully mixed, and the mixing uniformity of the air and the oxygen is improved.
2. According to the utility model, when the mixed gas is output from the air-oxygen mixing air inlet channel, the gas flow is detected and calculated through the flow detection element, and when the mixed gas enters the accommodating cavity provided with the fan assembly, the oxygen concentration condition is detected through the oxygen concentration sensor, so that the accurate regulation and control of the oxygen concentration are realized.
3. The utility model adopts the split structure design of the first shell and the second shell, wherein the upper diversion channel in the first shell is correspondingly connected with the lower diversion channel in the second shell to form a bent air-oxygen mixing air inlet channel, and the upper cavity in the first shell is correspondingly connected with the lower cavity in the second shell to form a containing cavity for containing the fan assembly, so that the structure is compact, the volume of the respirator is not increased, and the processing and the installation are convenient.
Drawings
Figure 1 is a schematic diagram of the overall structure of the present utility model,
figure 2 is an exploded view of the structure of the present utility model,
figure 3 is a cross-sectional view of the present utility model,
figure 4 is a schematic view of the first housing structure of figure 2,
figure 5 is a schematic view of the second housing structure of figure 2,
figure 6 is a schematic diagram of the differential pressure sensor of figure 2,
figure 7 is a schematic view of the air lock assembly of figure 2,
figure 8 is a schematic view of the housing seal member of figure 2,
figure 9 is a schematic view of the blower and blower bracket of figure 2,
fig. 10 is a schematic view of the fourth housing structure in fig. 2.
1, a differential pressure sensor; 2. a first housing; 3. an oxygen concentration sensor; 4. a housing seal; 5. an air inlet of the fan bin; 6. a third housing; 7. a blower; 8. a fan bracket; 9. a fourth housing; 10. a second housing; 11. sealing cover; 12. an air inlet; 13. a lower diversion channel; 14. a gas barrier assembly; 15. a second oxygen inlet; 16. an upper flow guide channel; 17. a first oxygen inlet; 18. a housing air outlet; 19. an air resistance clamping groove; 20. an oxygen concentration sensor clamping groove; 21. fixing the column; 22. a pressure first detection port; 23. a pressure second detection port; 24. an air resistance grid; 25. a first communication port; 26. a second communication port; 27. a cavity air outlet; 28. an air inlet of the air outlet cavity; 29. an air outlet cavity; 30. supporting legs of the fan support; 31. an air inlet of the fan; 32. a fan air outlet; 33. a fan support fixing column; 34. an upper cavity; 35. a lower cavity.
Detailed Description
The utility model is described in further detail below with reference to the accompanying drawings.
As shown in fig. 1 to 10, the utility model comprises a first shell 2, a second shell 10 and a fan assembly, wherein an upper diversion channel 16 and an upper cavity 34 are arranged in the first shell 2, a lower diversion channel 13 and a lower cavity 35 are arranged in the second shell 10, the first shell 2 is in sealing connection with the second shell 10, the upper diversion channel 16 and the lower diversion channel 13 are correspondingly connected to form a bent air-oxygen mixed air inlet channel, an oxygen inlet is arranged on the first shell 2 and communicated with the upper diversion channel 16, an air inlet 12 is arranged on the second shell 10 and communicated with the lower diversion channel 13, the upper cavity 34 and the lower cavity 35 are correspondingly connected to form a containing cavity, the fan assembly is arranged in the containing cavity, as shown in fig. 4, a cavity air inlet is arranged and communicated with the air-oxygen mixed air inlet channel, an output end of the air-oxygen mixed air inlet channel is provided with a flow detection element, the cavity air inlet is provided with an oxygen concentration sensor 3, as shown in fig. 8, the air outlet is arranged with a cavity 27, the second shell 10 is provided with an air outlet and the air outlet is communicated with the air outlet 18. When the air-oxygen mixing device works, oxygen enters the upper diversion channel 16 through the oxygen air inlet, air enters the lower diversion channel 13 through the air inlet 12, oxygen and air are mixed in the air-oxygen mixing air inlet channel formed by combining the upper diversion channel 16 and the lower diversion channel 13, the air-oxygen mixing air inlet channel is bent, so that the air-oxygen mixing travel can be greatly prolonged, the air and the oxygen are ensured to be fully mixed, the mixing uniformity of the air and the oxygen is improved, in addition, when the mixed gas is output by the air-oxygen mixing air inlet channel, the flow rate of the gas is detected and calculated through the flow rate detecting element, when the mixed gas enters the accommodating cavity, the oxygen concentration condition is detected through the oxygen concentration sensor 3, so that the accurate regulation of the oxygen concentration is realized, then the mixed gas enters the fan assembly, is discharged through the cavity air outlet 27 of the accommodating cavity through the action of the fan assembly, and finally, the mixed gas is output through the shell air outlet 18 on the second shell 10.
In this embodiment, as shown in fig. 2 and fig. 9 to 10, the fan assembly includes a fan 7, a third casing 6 and a fourth casing 9, where the third casing 6 and the fourth casing 9 are connected in a sealing manner to form a fan cabin, the fan cabin is disposed in the accommodating cavity, the fan 7 is disposed in the fan cabin, as shown in fig. 2, a fan cabin air inlet 5 is disposed on the third casing 6 and is in communication with the accommodating cavity, as shown in fig. 9, the fan 7 is provided with a fan air inlet 31 and a fan air outlet 32, and as shown in fig. 3, the fan air outlet 32 extends out of the fan cabin and is connected with the cavity air outlet 27, and mixed gas enters the fan cabin through the fan cabin air inlet 5 after entering the cavity air inlet of the accommodating cavity, enters the fan 7 through the fan air inlet 31, and is finally output by the fan air outlet 32.
As shown in fig. 9, the fan 7 is disposed on a fan support 8, a fan support leg 30 is disposed on the lower side of the fan support 8, as shown in fig. 10, and a fan support fixing column 33 matched with the fan support leg 30 is disposed in the fourth housing 9. In this embodiment, the fan support 8 is made of elastic silica gel, and can play a role in damping the fan 7. As shown in fig. 4, fixing posts 21 are disposed in the first casing 2 and the second casing 10 to assist in fixing the fan chamber.
In this embodiment, as shown in fig. 2 and fig. 6 to 7, the flow detection element includes an air-blocking component 14 and a differential pressure sensor 1, as shown in fig. 7, where the air-blocking component 14 includes an air-blocking grid 24, and a first communication port 25 and a second communication port 26 disposed on the air-blocking grid 24, as shown in fig. 4, an air-blocking clamping groove 19 is disposed at an output end of the air-oxygen mixing intake channel, the air-blocking grid 24 is clamped on the air-blocking clamping groove 19 to achieve fixation, and the first communication port 25 and the second communication port 26 are disposed at two sides of the air-blocking clamping groove 19, as shown in fig. 1, the differential pressure sensor 1 is disposed on the first housing 2, and as shown in fig. 6, a pressure first detection port 22 and a pressure second detection port 23 are disposed on the differential pressure sensor 1, where the pressure first detection port 22 is connected with the first grid 25, the pressure second detection port 23 is connected with the second communication port 26, when the mixed gas passes through the air-blocking component 14, a pressure difference is formed at two sides of the air-blocking component 24, the differential pressure sensor 1 is detected, and the differential pressure is controlled according to the pressure difference between the first detection port and the pressure sensor 1, and the differential pressure is calculated, and the flow of the air is detected by the pressure difference between the first detection port and the air-blocking component and the air flow is adjusted according to the pressure difference. The air-lock grid 24 and the differential pressure sensor 1 are both known in the art, and in this embodiment, the minimum grid area of the cross section of the air-lock grid 24 is greater than or equal to 5mm 2 The number of the grids is greater than or equal to 18, and the ventilation area is greater than or equal to 150mm 2 It is also known in the art to calculate the gas flow from the pressure differenceTechniques are known.
As shown in fig. 4, the air inlet of the cavity of the accommodating cavity is provided with an oxygen concentration sensor clamping groove 20 for installing the oxygen concentration sensor 3, and the oxygen concentration sensor 3 is a well-known technology in the art and is a commercially available product.
In this embodiment, as shown in fig. 5, the second housing 10 is provided with an air outlet cavity 29 with an air outlet cavity air inlet 28, and the cavity air outlet 27 of the accommodating cavity is communicated with the air outlet cavity air inlet 28, and the air outlet cavity 29 is communicated with the housing air outlet 18. As shown in fig. 2 to 3, a sealing cover 11 is provided on the lower side of the second housing 10 to seal the air outlet chamber 29.
In this embodiment, as shown in fig. 2, a first oxygen inlet 17 and a second oxygen inlet 15 are provided on the first housing 2, and the first oxygen inlet 17 and the second oxygen inlet 15 are both communicated with the upper diversion channel 16, and the second oxygen inlet 15 is an oxygen standby inlet.
In this embodiment, as shown in fig. 2, a housing seal 4 is disposed between the first housing 2 and the second housing 10 to achieve sealing, as shown in fig. 8, the shape of the housing seal 4 is matched with the shape of the first housing 2 and the second housing 10, and the internal air-oxygen mixing intake channel, the accommodating cavity, and other structures, in this embodiment, an H-shaped sealing ring is adopted for the housing seal 4, and the cavity air outlet 27 and the housing air outlet 18 are integrally disposed with the housing seal 4 to ensure sealing effect.
The working principle of the utility model is as follows:
when the utility model works, oxygen enters the upper diversion channel 16 through the oxygen inlet on the first shell 2, air enters the lower diversion channel 13 through the air inlet 12 on the second shell 10, and oxygen and air are mixed in the air-oxygen mixing air inlet channel formed by combining the upper diversion channel 16 and the lower diversion channel 13, as the air-oxygen mixing air inlet channel is bent, the air-oxygen mixing stroke can be greatly prolonged, the air and oxygen are fully mixed, the mixing uniformity of the air and the oxygen is improved, in addition, the mixed gas is detected and calculated through the flow detection element when being output by the air-oxygen mixing air inlet channel, the oxygen concentration condition is detected through the oxygen concentration sensor 3 when entering the accommodating cavity, so that the accurate regulation of the oxygen concentration is realized, then the mixed gas enters the fan assembly, is discharged through the cavity air outlet 27 of the accommodating cavity under the action of the fan assembly, and finally is output through the shell air outlet 18 on the second shell 10.
Claims (9)
1. An empty oxygen mixing arrangement of medical breathing machine, its characterized in that: including first casing (2), second casing (10) and fan subassembly, be equipped with in first casing (2) water conservancy diversion passageway (16) and last cavity (34), be equipped with in second casing (10) down water conservancy diversion passageway (13) and cavity (35) down, first casing (2) and second casing (10) sealing connection, and go up water conservancy diversion passageway (16) and air intake channel (13) down and correspond the linking and form the air mixing air inlet channel of bending, be equipped with oxygen air inlet on first casing (2) with go up water conservancy diversion passageway (16) intercommunication, be equipped with air inlet (12) on second casing (10) with lower water conservancy diversion passageway (13) intercommunication, go up cavity (34) and cavity (35) down and correspond the linking and form the holding chamber, and the fan subassembly is located in the holding chamber, the holding chamber be equipped with the cavity air inlet with air mixing air inlet channel intercommunication, and the output of air mixing air inlet channel is equipped with flow detection element, the cavity air inlet is equipped with oxygen concentration sensor (3), the air outlet (27) are equipped with air outlet (27) and air outlet (18).
2. The medical ventilator air-oxygen mixing device of claim 1, wherein: the fan assembly comprises a fan (7), a third shell (6) and a fourth shell (9), wherein the third shell (6) and the fourth shell (9) are in sealing connection to form a fan bin, the fan bin is arranged in the accommodating cavity, the fan (7) is arranged in the fan bin, a fan bin air inlet (5) is formed in the third shell (6) and communicated with the inside of the accommodating cavity, a fan air inlet (31) and a fan air outlet (32) are formed in the fan (7), and the fan air outlet (32) extends out of the fan bin and then is connected with the cavity air outlet (27).
3. The medical ventilator air-oxygen mixing device of claim 2, wherein: the fan (7) is arranged on a fan support (8), fan support supporting legs (30) are arranged on the lower side of the fan support (8), and fan support fixing columns (33) matched with the fan support supporting legs (30) are arranged in the fourth shell (9).
4. The medical ventilator air-oxygen mixing device of claim 1, wherein: the flow detection element comprises an air resistance assembly (14) and a pressure difference sensor (1), wherein the air resistance assembly (14) comprises an air resistance grid (24) and a first communication port (25) and a second communication port (26) which are arranged on the air resistance grid (24), an air resistance clamping groove (19) is arranged at the output end of the air-oxygen mixed air inlet channel, the air resistance grid (24) is arranged on the air resistance clamping groove (19), the first communication port (25) and the second communication port (26) are respectively arranged on two sides of the air resistance clamping groove (19), the pressure difference sensor (1) is arranged on the first shell (2), and a pressure first detection port (22) and a pressure second detection port (23) are arranged on the pressure difference sensor (1), wherein the pressure first detection port (22) is connected with the first communication port (25), and the pressure second detection port (23) is connected with the second communication port (26).
5. The medical ventilator air-oxygen mixing device of claim 1, wherein: an oxygen concentration sensor clamping groove (20) for installing the oxygen concentration sensor (3) is formed in the cavity air inlet of the accommodating cavity.
6. The medical ventilator air-oxygen mixing device of claim 1, wherein: an air outlet cavity (29) is formed in the second shell (10), and a cavity air outlet (27) of the accommodating cavity and the shell air outlet (18) are communicated with the air outlet cavity (29).
7. The medical ventilator air-oxygen mixing device of claim 1, wherein: the first shell (2) is provided with a first oxygen inlet (17) and a second oxygen inlet (15).
8. The medical ventilator air-oxygen mixing device of claim 1, wherein: a housing seal (4) is arranged between the first housing (2) and the second housing (10).
9. The medical ventilator air-oxygen mixing device of claim 8, wherein: the cavity air outlet (27) and the shell air outlet (18) are integrally arranged with the shell sealing piece (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320937170.7U CN219783456U (en) | 2023-04-24 | 2023-04-24 | Air-oxygen mixing device of medical breathing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320937170.7U CN219783456U (en) | 2023-04-24 | 2023-04-24 | Air-oxygen mixing device of medical breathing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219783456U true CN219783456U (en) | 2023-10-03 |
Family
ID=88183291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320937170.7U Active CN219783456U (en) | 2023-04-24 | 2023-04-24 | Air-oxygen mixing device of medical breathing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219783456U (en) |
-
2023
- 2023-04-24 CN CN202320937170.7U patent/CN219783456U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2981319B1 (en) | Resuscitator arrangements and flow monitoring | |
| CN219783456U (en) | Air-oxygen mixing device of medical breathing machine | |
| WO2023005207A1 (en) | Air path system and ventilator | |
| CN211434630U (en) | Face guard of PEEP governing valve with binary channels are adjustable | |
| CN114534056A (en) | Hydrogen-oxygen gas decompression mixing suction device | |
| CN204699187U (en) | Digitized composite-crossing anesthesia in operating room toxic emission monitoring system | |
| CN214633290U (en) | Respirator for respiratory medicine | |
| CN209154099U (en) | A kind of Animal Anesthesia device | |
| CN208785503U (en) | A kind of breathing equipment of emergency department | |
| CN214970795U (en) | Simple expiratory valve with function of synchronously adjusting positive end expiratory pressure | |
| EP0245468A4 (en) | Positive-flow, demand responsive, respiratory regulator. | |
| CN216061585U (en) | Oxygen uptake and end-tidal carbon dioxide detection catheter for anesthesia outside operating room | |
| CN217745272U (en) | Oxygen inhalation mask's oxygen inhalation mask is used in internal medicine nursing of removable oxygen mask | |
| CN117899315A (en) | Flow sensor assembly | |
| CN219332863U (en) | Novel high-flow respiration humidification therapeutic apparatus | |
| CN202859843U (en) | Anesthetic gas output concentration control device of anesthesia machine | |
| CN214550595U (en) | Respirator hybrid chamber front end current stabilizer | |
| CN219700723U (en) | Gas mixing structure and breathing machine | |
| CN211301644U (en) | Binary channels breathing machine extension pipe | |
| CN220979961U (en) | Turbine fan noise reduction structure and breathing machine | |
| CN219614631U (en) | Gas circuit entry mechanism and breathing equipment | |
| CN113413527B (en) | Breathing module oxygen mixing device for portable universal life support system | |
| CN219462216U (en) | Emergency air suction structure for breathing machine and breathing machine | |
| CN219354952U (en) | Ventilation system and breathing machine | |
| CN218685635U (en) | High and low pressure alarm device for air-oxygen mixer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |