CN219810505U - Oxygen flowmeter - Google Patents
Oxygen flowmeter Download PDFInfo
- Publication number
- CN219810505U CN219810505U CN202321281428.9U CN202321281428U CN219810505U CN 219810505 U CN219810505 U CN 219810505U CN 202321281428 U CN202321281428 U CN 202321281428U CN 219810505 U CN219810505 U CN 219810505U
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- Prior art keywords
- oxygen
- branch pipe
- gas
- connector
- way valve
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- 239000001301 oxygen Substances 0.000 title claims abstract description 89
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 89
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 88
- 239000007789 gas Substances 0.000 claims description 79
- 238000002640 oxygen therapy Methods 0.000 claims description 17
- 238000009434 installation Methods 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 12
- 238000005273 aeration Methods 0.000 claims 1
- 230000036284 oxygen consumption Effects 0.000 abstract description 4
- 238000013016 damping Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000012153 distilled water Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 150000002926 oxygen Chemical class 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
Landscapes
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The utility model provides an oxygen flowmeter, which relates to the technical field of medical equipment and comprises a mounting shell, an inflation metering system, a deflation metering system and a humidification assembly, wherein the inflation metering system, the deflation metering system and the humidification assembly are all arranged on the mounting shell; the inflation metering system is used for counting the oxygen amount of the inflated oxygen bottle or the oxygen bag, the deflation metering system is used for counting the oxygen output amount of the inflated oxygen bottle and the oxygen bag, and then the residual amount and the usable time of the residual amount are counted according to the difference value of the inflated and discharged amount and the deflation rate, so that a user can know the oxygen use condition in time. The oxygen supplying device solves the problems that the oxygen consumption of the oxygen transferring bag/the oxygen transferring bottle is difficult to control and the like when the outdoor oxygen is supplied.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to an oxygen flowmeter.
Background
When the transported patient needs oxygen to support breathing, the transported oxygen bag/transported oxygen bottle has no residual oxygen amount and residual time functions, so that the oxygen is consumed during transportation, and the life safety of the patient is threatened; when the national emergency medical field emergency operation needs oxygen supply, the oxygen tank has no residual oxygen amount and residual time function, and if the oxygen is about to be used up or has been consumed, no early warning or prompting exists, the device has great potential safety hazard to operation patients, and further the device capable of displaying the condition of transferring the oxygen bag/the oxygen consumption of the oxygen tank is needed, so that the requirement of outdoor oxygen supply use is met.
Disclosure of Invention
The utility model aims to provide an oxygen flowmeter, which solves the problems that the oxygen consumption of a transported oxygen bag/transported oxygen bottle is difficult to control and the like when outdoor oxygen is supplied.
The embodiment of the utility model is realized by the following technical scheme: an oxygen flow meter comprises a mounting shell, an inflation metering system, a deflation metering system and a humidification assembly, wherein the inflation metering system, the deflation metering system and the humidification assembly are all arranged on the mounting shell;
the gas filling metering system comprises a gas filling joint, a first one-way valve, a first electromagnetic valve, a second one-way valve, a gas mass flowmeter, a third one-way valve and a gas cylinder connector which are sequentially communicated through a gas pipe, wherein gas in the gas filling metering system can only flow from the gas filling joint to the gas cylinder connector;
the deflation metering system comprises a fourth one-way valve, a second electromagnetic valve, a fifth one-way valve, a third electromagnetic valve, an oxygen therapy connector and the gas mass flowmeter and the gas cylinder connector, wherein the gas cylinder connector, the fourth one-way valve, the gas mass flowmeter, the second electromagnetic valve, the fifth one-way valve, the third electromagnetic valve and the oxygen therapy connector are in one-way communication through a gas pipe;
the humidifying component is communicated and arranged between the third electromagnetic valve and the oxygen therapy connector.
Optionally, the deflation metering system further comprises a first branch pipe, one end of the first branch pipe is communicated with an air pipe between the air bottle connector and the third one-way valve, and the other end of the first branch pipe is communicated with an air pipe between the second one-way valve and the air mass flowmeter;
the fourth one-way valve is arranged on the first branch pipe.
Optionally, the deflation metering system further comprises a second branch pipe, one end of the second branch pipe is communicated with the air pipe between the gas mass flowmeter and the third one-way valve, and the other end of the second branch pipe is communicated with the air pipe between the first electromagnetic valve and the first one-way valve;
the second electromagnetic valve and the fifth one-way valve are arranged on the second branch pipe;
the device also comprises a third branch pipe, wherein one end of the third branch pipe is communicated with an air pipe between the second branch pipe and the first one-way valve, and the other end of the third branch pipe is communicated with the oxygen therapy connector through the humidifying component;
the third electromagnetic valve is arranged on the third branch pipe.
Optionally, the device further comprises a first pressure sensor and a second pressure sensor, wherein the first pressure sensor is arranged on the air pipe between the third branch pipe and the second branch pipe;
the second pressure sensor is arranged on an air pipe between the first branch pipe and the air bottle connector.
Optionally, the inflation connector is disposed on top of the mounting housing;
the gas cylinder connector and the oxygen therapy connector are respectively arranged at the left side and the right side of the installation shell.
Optionally, the humidifying assembly comprises a humidifying bottle, a fourth branch pipe, a fifth branch pipe and an oxygen filtering head, and the humidifying bottle is in threaded connection with the mounting shell;
one end of the fourth branch pipe is communicated with the conveying of the third branch pipe, the other end of the fourth branch pipe is provided with the oxygen filter head, and one end of the fourth branch pipe connected with the oxygen filter head extends into the humidifying bottle;
one end of the fifth branch pipe is communicated with the humidifying bottle, and the other end of the fifth branch pipe is communicated with the oxygen therapy connector.
Optionally, the valve further comprises a sixth one-way valve, wherein the sixth one-way valve is arranged on the third branch pipe, and the sixth one-way valve is positioned between the third electromagnetic valve and the fourth branch pipe.
Optionally, the valve further comprises a seventh one-way valve, and the seventh one-way valve is arranged on the fifth branch pipe.
Optionally, the installation casing is L-shaped, the humidifying bottle cooperation is arranged in the right angle of installation casing.
Optionally, the device further comprises a sealing ring, wherein the sealing ring is arranged in a threaded hole formed in the connection of the dampening bottle and the installation shell, and the sealing ring is used for sealing a gap between the dampening bottle and the installation shell.
The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects:
when the air is inflated, the first electromagnetic valve is opened, the second electromagnetic valve and the third electromagnetic valve are closed, the inflation source is communicated with the inflation connector, the oxygen bottle or the oxygen bag is communicated with the gas bottle connector, the gas mass flowmeter counts the total amount of inflation, when the air is deflated, the first electromagnetic valve is closed, the second electromagnetic valve and the third electromagnetic valve are opened, the gas mass flowmeter counts the amount of output oxygen at the moment, and the residual gas allowance is controlled to alarm through the control chip MCU: and setting a lowest threshold value of the gas allowance, sounding an alarm when the gas allowance is lower than the threshold value, and displaying alarm content on a screen. Alarming the gas residual time: and setting the lowest threshold value of the gas residual time, sounding an alarm when the gas residual time is lower than the threshold value, and displaying alarm content on a screen. And (3) alarming under low gas pressure: and measuring the real-time pressure through the first pressure sensor and the second pressure sensor, setting a lowest threshold value of the gas pressure, sounding an alarm when the gas pressure is lower than the threshold value, and displaying alarm content on a screen.
Drawings
FIG. 1 is a schematic illustration of an oxygen flow meter according to the present utility model;
FIG. 2 is a schematic view of the internal structure of an oxygen flow meter according to the present utility model;
icon: 1. the device comprises a mounting shell, 2, an inflation connector, 3, a first one-way valve, 4, a first electromagnetic valve, 5, a second one-way valve, 6, a gas mass flowmeter, 7, a third one-way valve, 8, a gas cylinder connector, 9, a fourth one-way valve, 10, a second electromagnetic valve, 11, a fifth one-way valve, 12, a third electromagnetic valve, 13, an oxygen delivery connector, 14, a first branch pipe, 15, a second branch pipe, 16, a third branch pipe, 17, a first pressure sensor, 18, a second pressure sensor, 19, a humidifying bottle, 20, a fourth branch pipe, 21, a fifth branch pipe, 22, an oxygen filter head, 23, a sixth one-way valve, 24, a seventh one-way valve, 25 and a sealing ring.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Referring to fig. 1 to 2, the present utility model provides one of the embodiments: an oxygen flow meter comprises a mounting shell 1, an inflation metering system, a deflation metering system and a humidification assembly, wherein the inflation metering system, the deflation metering system and the humidification assembly are all arranged on the mounting shell 1; the inflation metering system is used for counting the oxygen amount of the inflated oxygen bottle or the oxygen bag, the deflation metering system is used for counting the oxygen output amount of the inflated oxygen bottle and the oxygen bag, and then the residual amount and the usable time of the residual amount are counted according to the difference value of the inflated and discharged amount and the deflation rate, so that a user can know the oxygen use condition in time.
As shown in fig. 2, the inflation metering system comprises an inflation connector 2, a first one-way valve 3, a first electromagnetic valve 4, a second one-way valve 5, a gas mass flowmeter 6, a third one-way valve 7 and a gas bottle connector 8 which are sequentially communicated through a gas pipe, wherein gas in the inflation metering system can only flow from the inflation connector 2 to the gas bottle connector 8; the gas mass flow meter 6 is used to count the amount of charge when charging.
The deflation metering system comprises a fourth one-way valve 9, a second electromagnetic valve 10, a fifth one-way valve 11, a third electromagnetic valve 12, an oxygen therapy connector 13, a gas mass flowmeter 6 and a gas bottle connector 8, wherein the gas bottle connector 8, the fourth one-way valve 9, the gas mass flowmeter 6, the second electromagnetic valve 10, the fifth one-way valve 11, the third electromagnetic valve 12 and the oxygen therapy connector 13 are in one-way communication through a gas pipe; during the gas release, the gas mass flowmeter 6 counts the total amount of gas released.
The humidifying component is communicated and arranged between the third electromagnetic valve 12 and the oxygen therapy connector 13. The main function of the humidifying component is to humidify dry oxygen and moisten the oxygen.
As shown in fig. 2, the deflation metering system further comprises a first branch pipe 14, one end of the first branch pipe 14 is communicated with the air pipe between the air bottle connector 8 and the third one-way valve 7, and the other end of the first branch pipe 14 is communicated with the air pipe between the second one-way valve 5 and the air mass flowmeter 6;
the fourth non-return valve 9 is arranged on the first branch pipe 14.
More specifically, the deflation metering system further comprises a second branch pipe 15, one end of the second branch pipe 15 is communicated with the air pipe between the gas mass flowmeter 6 and the third one-way valve 7, and the other end of the second branch pipe 15 is communicated with the air pipe between the first electromagnetic valve 4 and the first one-way valve 3;
the second electromagnetic valve 10 and the fifth one-way valve 11 are arranged on the second branch pipe 15;
the device also comprises a third branch pipe 16, one end of the third branch pipe 16 is communicated with an air pipe between the second branch pipe 15 and the first one-way valve 3, and the other end of the third branch pipe 16 is communicated with the oxygen therapy connector 13 through a humidifying component;
the third solenoid valve 12 is provided on the third branch pipe 16.
The humidifying assembly comprises a humidifying bottle 19, a fourth branch pipe 20, a fifth branch pipe 21 and an oxygen filter head 22, and the humidifying bottle 19 is in threaded connection with the installation shell 1;
one end of the fourth branch pipe 20 is communicated with the transmission of the third branch pipe 16, the other end of the fourth branch pipe 20 is provided with an oxygen filter head 22, and one end of the fourth branch pipe 20 connected with the oxygen filter head 22 extends into the humidifying bottle 19; as shown in fig. 2, the humidifying bottle 19 is filled with distilled water, and the oxygen filter head 22 is immersed in the distilled water.
Meanwhile, one end of the fifth branch pipe 21 is communicated with the humidifying bottle 19, the other end of the fifth branch pipe 21 is communicated with the oxygen delivery connector 13, and oxygen rises to the upper end of the humidifying bottle 19 after being humidified by the humidifying bottle 19 and is then discharged from the fifth branch pipe.
And a sixth one-way valve 23, wherein the sixth one-way valve 23 is arranged on the third branch pipe 16, and the sixth one-way valve 23 is arranged between the third electromagnetic valve 12 and the fourth branch pipe 20 to prevent the liquid in the humidifying bottle 19 from flowing backwards.
Also included is a seventh one-way valve 24, the seventh one-way valve 24 being provided on the fifth branch pipe 21 to prevent outside air from entering into the humidifying bottle 19.
In summary, as shown in fig. 2, in the embodiment, when in inflation, an inflation source is communicated with the inflation connector 2, an oxygen bottle or an oxygen bag is communicated with the gas bottle connector 8, an inflation mode is entered, the first electromagnetic valve 4 is controlled to be opened, the second electromagnetic valve 10 and the third electromagnetic valve 12 are controlled to be closed, and the gas is fed into the oxygen bottle or the oxygen bag from the inflation connector 2, the first one-way valve 3, the first pressure sensor 17, the first electromagnetic valve 4, the second one-way valve 5, the gas mass flowmeter 6, the third one-way valve 7, the second pressure sensor 18 and the gas bottle connector 8 in one direction, and the gas mass flowmeter 6 counts the total amount of inflation.
When the air is discharged, the first electromagnetic valve 4 is closed, the second electromagnetic valve 10 and the third electromagnetic valve 12 are opened, and the oxygen bottle or the oxygen bag sequentially passes through: the air bottle connector 8, the second pressure sensor 18, the fourth one-way joint valve 9, the air mass flowmeter 6, the second electromagnetic valve 10, the fifth one-way joint 11, the first pressure sensor 17, the third electromagnetic valve 12, the sixth one-way valve 23, the oxygen filter head 22, the humidifying bottle 19, the seventh one-way valve 24 and the oxygen delivery connector 13 are connected, so that oxygen is delivered to the outside, and the air mass flowmeter 6 counts the output oxygen at the moment.
The control chip MCU controls the closing of the first electromagnetic valve 4, the opening and closing of the second electromagnetic valve 10 and the third electromagnetic valve 12, and meanwhile, the difference value between the input oxygen amount and the output oxygen amount can be calculated, and the difference value is displayed on a display for workers to read.
More specifically, the residual gas residual quantity alarm is controlled by the control chip MCU: and setting a lowest threshold value of the gas allowance, sounding an alarm when the gas allowance is lower than the threshold value, and displaying alarm content on a screen. Alarming the gas residual time: and setting the lowest threshold value of the gas residual time, sounding an alarm when the gas residual time is lower than the threshold value, and displaying alarm content on a screen. And (3) alarming under low gas pressure: the real-time pressure is measured by the first pressure sensor 17 and the second pressure sensor 18, the lowest threshold value of the gas pressure is set, and when the gas pressure is lower than the threshold value, an alarm sound is sent out, and the alarm content is displayed on a screen.
As shown in fig. 2, the device further comprises a first pressure sensor 17 and a second pressure sensor 18, wherein the first pressure sensor 17 is arranged on the air pipe between the third branch pipe 16 and the second branch pipe 15;
the second pressure sensor 18 is arranged on the gas line between the first branch pipe 14 and the gas cylinder connection head 8. In the implementation, the first pressure sensor 17 and the second pressure sensor 18 work simultaneously, so that the oxygen pressure of the pipeline can be displayed, and the oxygen use and the air tightness of the whole pipeline can be judged in an auxiliary mode.
The inflatable joint 2 is arranged at the top of the installation shell 1; the gas cylinder connector 8 and the oxygen therapy connector 13 are respectively arranged at the left side and the right side of the installation shell 1. More specifically, the installation casing 1 is L shape, and the cooperation of damping bottle 19 is arranged in the right angle of installation casing 1, and damping bottle 19 is independent of the fuselage outside, conveniently observes the water level. The externally hung humidifying bottle 19 is simple to operate, easy to detach and clean, convenient to inject water, and capable of being cleaned once for 1-2 weeks to reject bacteria, so that various problems of the embedded humidifying bottle are solved. Simultaneously, the condition of oxygen humidification during outdoor use is also satisfied.
More specifically, as shown in fig. 2, the damping device further comprises a sealing ring 25, wherein the sealing ring 25 is arranged in a threaded hole for connecting the damping bottle 19 with the installation shell 1, and the sealing ring 25 is used for sealing a gap between the damping bottle 19 and the installation shell 1.
The oxygen flowmeter is provided with a high-definition liquid crystal display screen, has luminous display, is provided with two types of instantaneous flow 0000 and 000m/h and accumulated flow 000000 and 000m total number, and displays month, date and Beijing time, and is arranged outside a pipeline well to a branch pipeline of a department or a nurse station to monitor the oxygen consumption condition in real time. The flow calculator is also provided with a tunable button for tuning time, date, removing accumulated flow, adjusting contrast, and storing daily oxygen flow in one month, which is convenient for checking. The instantaneous flow is 4-7 digits and displayed 9999 and 999m/h, the accumulated flow is 7-10 digits and displayed 9999 and 999m, and the number is automatically cleared and counted after full. The oxygen flowmeter is designed with a real-time data storage function, and can prevent sudden power failure data loss. In the power failure or lithium battery no-power state, the internal data is still permanently stored.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The oxygen flowmeter is characterized by comprising a mounting shell (1), an inflation metering system, a deflation metering system and a humidification assembly, wherein the inflation metering system, the deflation metering system and the humidification assembly are all arranged on the mounting shell (1);
the gas charging metering system comprises a gas charging connector (2), a first one-way valve (3), a first electromagnetic valve (4), a second one-way valve (5), a gas mass flowmeter (6), a third one-way valve (7) and a gas bottle connector (8) which are sequentially communicated through a gas pipe, wherein gas in the gas charging metering system can only flow from the gas charging connector (2) to the gas bottle connector (8);
the deflation metering system comprises a fourth one-way valve (9), a second electromagnetic valve (10), a fifth one-way valve (11), a third electromagnetic valve (12), an oxygen therapy connector (13) and the gas mass flowmeter (6) and a gas cylinder connector (8), wherein the gas cylinder connector (8), the fourth one-way valve (9), the gas mass flowmeter (6), the second electromagnetic valve (10), the fifth one-way valve (11), the third electromagnetic valve (12) and the oxygen therapy connector (13) are communicated in one direction through a gas pipe;
the humidifying component is communicated and arranged between the third electromagnetic valve (12) and the oxygen therapy connector (13).
2. An oxygen flow meter according to claim 1, wherein the bleed air metering system further comprises a first branch pipe (14), one end of the first branch pipe (14) being in air pipe communication with the air pipe between the air cylinder connector (8) and the third one-way valve (7), the other end of the first branch pipe (14) being in air pipe communication with the air pipe between the second one-way valve (5) and the air mass flow meter (6);
the fourth one-way valve (9) is arranged on the first branch pipe (14).
3. An oxygen flow meter according to claim 2, characterized in that the bleed air metering system further comprises a second branch pipe (15), one end of the second branch pipe (15) being in communication with the air pipe between the gas mass flow meter (6) and the third one-way valve (7), the other end of the second branch pipe (15) being in communication with the air pipe between the first solenoid valve (4) and the first one-way valve (3);
the second electromagnetic valve (10) and the fifth one-way valve (11) are arranged on the second branch pipe (15);
the device further comprises a third branch pipe (16), one end of the third branch pipe (16) is communicated with an air pipe between the second branch pipe (15) and the first one-way valve (3), and the other end of the third branch pipe (16) is communicated with the oxygen therapy connector (13) through the humidifying component;
the third solenoid valve (12) is arranged on the third branch pipe (16).
4. An oxygen flow meter according to claim 3, further comprising a first pressure sensor (17) and a second pressure sensor (18), the first pressure sensor (17) being arranged on the gas pipe between the third branch pipe (16) and the second branch pipe (15);
the second pressure sensor (18) is arranged on the air pipe between the first branch pipe (14) and the air bottle connector (8).
5. An oxygen flow meter according to claim 4, characterised in that the aeration connector (2) is arranged on top of the mounting housing (1);
the gas cylinder connector (8) and the oxygen therapy connector (13) are respectively arranged at the left side and the right side of the installation shell (1).
6. An oxygen flow meter according to claim 4, characterised in that the humidification assembly comprises a humidification bottle (19), a fourth sub-tube (20), a fifth sub-tube (21) and an oxygen filter head (22), the humidification bottle (19) being screwed with the mounting housing (1);
one end of the fourth branch pipe (20) is communicated with the conveying of the third branch pipe (16), the other end of the fourth branch pipe (20) is provided with the oxygen filter head (22), and one end, connected with the oxygen filter head (22), of the fourth branch pipe (20) extends into the humidifying bottle (19);
one end of the fifth branch pipe (21) is communicated with the humidifying bottle (19), and the other end of the fifth branch pipe (21) is communicated with the oxygen therapy connector (13).
7. An oxygen flow meter according to claim 6, further comprising a sixth non-return valve (23), said sixth non-return valve (23) being arranged on said third branch pipe (16), said sixth non-return valve (23) being located between said third solenoid valve (12) and a fourth branch pipe (20).
8. An oxygen flow meter according to claim 7, characterised in that it further comprises a seventh non-return valve (24), said seventh non-return valve (24) being arranged on said fifth branch pipe (21).
9. An oxygen flow meter according to claim 6, characterised in that the mounting housing (1) is L-shaped, the dampening bottle (19) being fitted in a right angle of the mounting housing (1).
10. An oxygen flow meter according to claim 9, further comprising a sealing ring (25), said sealing ring (25) being arranged in a threaded hole connecting said dampening bottle (19) with said mounting housing (1), said sealing ring (25) being arranged to seal a gap between said dampening bottle (19) and said mounting housing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321281428.9U CN219810505U (en) | 2023-05-25 | 2023-05-25 | Oxygen flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321281428.9U CN219810505U (en) | 2023-05-25 | 2023-05-25 | Oxygen flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219810505U true CN219810505U (en) | 2023-10-10 |
Family
ID=88212024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321281428.9U Active CN219810505U (en) | 2023-05-25 | 2023-05-25 | Oxygen flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219810505U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117629330A (en) * | 2024-01-26 | 2024-03-01 | 云南都得利医疗器械有限公司 | Multifunctional oxygen flow metering device |
-
2023
- 2023-05-25 CN CN202321281428.9U patent/CN219810505U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117629330A (en) * | 2024-01-26 | 2024-03-01 | 云南都得利医疗器械有限公司 | Multifunctional oxygen flow metering device |
| CN117629330B (en) * | 2024-01-26 | 2024-04-05 | 云南都得利医疗器械有限公司 | Multifunctional oxygen flow metering device |
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