CN114522306B - Pneumatic atomization drug delivery device - Google Patents
Pneumatic atomization drug delivery device Download PDFInfo
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- CN114522306B CN114522306B CN202210189613.9A CN202210189613A CN114522306B CN 114522306 B CN114522306 B CN 114522306B CN 202210189613 A CN202210189613 A CN 202210189613A CN 114522306 B CN114522306 B CN 114522306B
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- air inlet
- pipe
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- bottle
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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
- A61M11/00—Sprayers or atomisers specially adapted for therapeutic purposes
- A61M11/02—Sprayers or atomisers specially adapted for therapeutic purposes operated by air or other gas pressure applied to the liquid or other product to be sprayed or atomised
-
- 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
- A61M16/06—Respiratory or anaesthetic masks
-
- 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
- A61M31/00—Devices for introducing or retaining media, e.g. remedies, in cavities of the body
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/42—Reducing noise
-
- 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
- A61M2210/00—Anatomical parts of the body
- A61M2210/10—Trunk
- A61M2210/1025—Respiratory system
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
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- Health & Medical Sciences (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)
- Emergency Medicine (AREA)
- Pulmonology (AREA)
- Nozzles (AREA)
Abstract
The invention relates to a pneumatic atomization drug delivery device, which comprises an atomization end and a drug delivery end, wherein the atomization end is provided with an atomization tank, the bottom of the atomization tank is provided with a primary nozzle, the lower end of the primary nozzle is provided with a primary air inlet, and the outlet of the primary nozzle is provided with a liquid spraying port; the top of the tank body is provided with a fog outlet; the administration end is provided with an atomization bottle and a liquid medicine bottle, and the liquid medicine bottle is connected with a liquid spraying port of the tank body through a liquid medicine pipe; the bottom of the atomizing bottle is provided with a secondary nozzle, the lower end of the secondary nozzle is provided with a secondary air inlet, the outlet of the secondary nozzle is provided with a spray opening, the spray opening is connected with the spray outlet of the tank body through an aerosol pipe, the top of the atomizing bottle is provided with a breathing opening, and the breathing opening is connected with an oxygen mask; the first-stage air inlet is connected with a first-stage air inlet pipe, and the second-stage air inlet is connected with a second-stage air inlet pipe. The pneumatic atomization drug delivery device can reduce noise influence and is suitable for atomization treatment of children. In addition, the loss of the medicine can be reduced, and the medicine can be saved.
Description
Technical Field
The invention relates to a pneumatic atomization drug delivery device, and belongs to the technical field of atomization treatment equipment.
Background
The aerosol inhalation therapy is to disperse the medicine into tiny fog drops or particles by an aerosol device, so that the medicine is suspended in the air and enters into the respiratory tract and the lung, thereby achieving the purpose of treating the respiratory tract inflammation. Nebulization therapy is widely used for the treatment of respiratory diseases in children. In order to achieve the treatment effect, the atomization treatment requires that fog drops or particles are thinned to be below 10 microns, and medicines with poor atomization effect are difficult to enter the lung along with gas. However, when the device is used for children treatment, the atomization device is loud in noise, so that the children are easy to feel frightened, and normal treatment cannot be maintained. The noise of the atomization device is generated by high-pressure air flow, and the larger the air flow speed is, the larger the noise is, but the atomization effect is poor when the air flow speed is reduced. In addition, another problem of the nebulization treatment is that the loss of the medicine is large, the medicine which can be effectively deposited in the lungs is only about 10%, most of the medicine is discharged to the outside at the time of exhalation or deposited in the face, and the skin of the face is easily stimulated.
Disclosure of Invention
Aiming at the problems, the invention provides a pneumatic atomization drug delivery device, which comprises the following specific scheme:
the pneumatic atomization drug delivery device comprises an atomization end and a drug delivery end, wherein the atomization end is provided with an atomization tank, the bottom of the atomization tank is provided with a primary nozzle, the lower end of the primary nozzle is provided with a primary air inlet, and the outlet of the primary nozzle is provided with a liquid spraying port; the top of the tank body is provided with a fog outlet; the administration end is provided with an atomization bottle and a liquid medicine bottle, and the liquid medicine bottle is connected with a liquid spraying port of the tank body through a liquid medicine pipe; the bottom of the atomizing bottle is provided with a secondary nozzle, the lower end of the secondary nozzle is provided with a secondary air inlet, the outlet of the secondary nozzle is provided with a spray opening, the spray opening is connected with the spray outlet of the tank body through an aerosol pipe, the top of the atomizing bottle is provided with a breathing opening, and the breathing opening is connected with an oxygen mask; the first-stage air inlet is connected with a first-stage air inlet pipe, and the second-stage air inlet is connected with a second-stage air inlet pipe.
Further, a liquid suction pipe is arranged in the atomizing tank, one end of the liquid suction pipe is connected to the bottom of the atomizing tank, and the other end of the liquid suction pipe is connected to the outlet of the primary nozzle through a venturi tube.
Further, a gas phase balance pipe is connected between the liquid medicine bottle and the atomizing bottle.
Further, the oxygen mask is equipped with the breather valve, and the breather valve is equipped with circular shape through-hole, and the front end and the rear end of through-hole all are equipped with spacingly, are equipped with foam ball in the through-hole, and the front end and the oxygen mask intercommunication of through-hole, the lateral wall are equipped with front opening and back opening, and front opening is equipped with the expiration pipe with outside intercommunication, and expiration pipe is equipped with the check valve, and back opening and atomizing bottle's breathing mouth intercommunication, the rear end and the expiration pipe intercommunication of through-hole.
Further, the primary air inlet pipe is provided with an air inlet valve, and the liquid medicine pipe is provided with a liquid inlet valve; and an impeller driven by air flow is arranged in the secondary air inlet pipe, and a rotating shaft of the impeller is in transmission connection with a valve rod of the air inlet valve and a valve rod of the liquid inlet valve.
Further, the first-stage nozzle is arranged at a position close to the side wall of the tank body, the axes of valve cores of the air inlet valve and the liquid inlet valve are parallel to the axis of the impeller, a gear box is arranged on the outer wall of the atomization tank, the air inlet valve rod, the liquid inlet valve rod and the impeller rotating shaft are all extended into the gear box, the impeller rotating shaft is positioned between the air inlet valve rod and the liquid inlet valve rod, and the impeller rotating shaft is in gear transmission with the air inlet valve rod and the liquid inlet valve rod.
Further, the aerosol pipe, the liquid medicine pipe and the secondary air inlet pipe are arranged in a flexible pipeline assembly, and the pipeline assembly is detachably connected with the atomizing bottle and the liquid medicine bottle through corresponding interfaces.
Further, the atomizing tank is arranged in the sound insulation box.
The pneumatic atomization drug delivery device can reduce noise influence and is suitable for atomization treatment of children. In addition, the loss of the medicine can be reduced, the medicine is saved, and the problem of facial skin irritation caused by the deposition of the medicine on the face is avoided.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the structure of the atomizing tank according to the present invention;
FIG. 3 is a schematic view of the structure of an atomizing bottle according to the present invention;
FIG. 4 is a schematic view of the structure of the gear box of the present invention;
fig. 5 is a schematic structural view of a breather valve according to the present invention.
Detailed Description
The following describes the aspects of the present invention in detail with reference to specific examples.
Example 1
The pneumatic atomization drug delivery device of the embodiment comprises an atomization end and a drug delivery end, wherein the atomization end is provided with an atomization tank 1, the bottom of the atomization tank 1 is provided with a primary nozzle 2, the lower end of the primary nozzle 2 is provided with a primary air inlet 3, and the outlet of the primary nozzle is provided with a liquid spraying port 4; the top of the tank body is provided with a fog outlet 5; the administration end is provided with an atomization bottle 6 and a liquid medicine bottle 7, and the liquid medicine bottle is connected with a liquid spraying port 4 of the tank body through a liquid medicine pipe 8; the bottom of the atomizing bottle is provided with a secondary nozzle 9, the lower end of the secondary nozzle is provided with a secondary air inlet 10, the outlet of the secondary nozzle is provided with a spray opening 11, the spray opening is connected with the mist outlet of the tank body through an aerosol pipe 12, the top of the atomizing bottle is provided with a breathing opening 13, and the breathing opening is connected with an oxygen mask 14; the primary air inlet 3 is connected with a primary air inlet pipe 15, and the secondary air inlet 10 is connected with a secondary air inlet pipe 16. Wherein the first-stage air inlet pipe is connected with a high-pressure air source, and the second-stage air inlet pipe is connected with a low-pressure air source. The primary air inlet pipe and the secondary air inlet pipe are connected with the same air source, and the air pressure distribution of the primary air inlet pipe and the secondary air inlet pipe is regulated through a valve 17. The air source can be oxygen or compressed air.
In this scheme, the atomizing jar is as main atomizing container, and the one-level air inlet provides high-pressure large-traffic air supply, and liquid medicine is through liquid medicine pipe along hydrojet mouth blowout, and high-speed air current carries out high-efficient atomizing to the liquid medicine. Meanwhile, the atomizing tank is also used as a mist storage container. And enabling the aerosol after primary atomization to enter a secondary nozzle along an aerosol pipe, and performing secondary atomization by air flow sprayed by a secondary air inlet. The air source of the secondary atomization adopts small-flow air flow, reduces noise, and further atomizes and dilutes the aerosol guided out of the atomization tank. The atomizing tank and the atomizing bottle are connected through a hose, and when in treatment, the patient wears the oxygen mask to carry out atomization inhalation treatment, and the atomizing tank serving as a main noise source is far away from the head of the patient, so that obvious noise influence can not be generated, and the atomizing tank is suitable for children atomization treatment.
In this scheme, as shown in fig. 2, a liquid suction pipe 18 is arranged in the atomizing tank, one end of the liquid suction pipe is connected to the bottom of the atomizing tank, and the other end of the liquid suction pipe is connected to the outlet of the primary nozzle through a venturi tube. The accumulated liquid generated by condensation in the atomization tank can be circulated to the first-stage nozzle through the liquid suction pipe for circular atomization, so that the liquid medicine is prevented from depositing in the atomization tank.
Further, as shown in fig. 3, a gas phase balance tube 19 is connected between the liquid medicine bottle and the atomizing bottle. The arrangement of the gas phase balance pipe can ensure that the liquid medicine can smoothly flow from the liquid medicine bottle to the liquid spraying port.
Most of the drug loss in the nebulization treatment is caused by periodic breathing action, when the conventional oxygen mask is used for the nebulization treatment, the mask is always filled with the aerosol, and the aerosol only enters the respiratory tract when a patient inhales, and when the patient exhales, the aerosol in the mask can be discharged to the outside along a respiratory valve or gaps between the mask and the face, so that a large amount of drug loss is caused.
To above-mentioned problem, this scheme is improved as follows, like fig. 5, and the oxygen face guard is equipped with the breather valve, and the breather valve is equipped with circular shape through-hole 20, and the front end and the rear end of through-hole all are equipped with spacingly, are equipped with foam ball 21 in the through-hole, and foam ball can follow the through-hole round trip movement. The front end of the through hole is communicated with the oxygen mask, the side wall is provided with a front opening 22 and a rear opening 23, and the front opening and the rear opening are separated from the limiting position by a certain distance. The front opening is provided with an expiration tube communicated with the outside, the expiration tube is provided with a one-way valve 24, the rear opening is communicated with the breathing opening of the atomization bottle, and the rear end of the through hole is communicated with the expiration tube.
In the expiration process, the foam ball moves to the through-hole rear end, and when the foam ball moved to the rear of front opening, exhale inside pipe and the oxygen mask intercommunication, the gas of exhaling is discharged along exhaling the pipe. When the foam ball moves to the rear of the rear opening, the breathing port is communicated with the oxygen mask, and the aerosol in the atomizing bottle is filled into the oxygen mask until the expiration process is finished. In the air suction process, the foam ball moves to the front end of the through hole, and when the foam ball moves to the front of the rear opening, the air suction port is separated from the front end of the through hole, and the aerosol does not directly enter the oxygen mask through the front opening. Most of the aerosol filled into the oxygen mask during the exhalation process is inhaled, the residual quantity of the aerosol of the oxygen mask is small, and the quantity of the medicament discharged along with the exhalation in the next exhalation process is greatly reduced, so that the medicament loss can be reduced.
On the other hand, as shown in fig. 4, the first-stage air inlet pipe is provided with an air inlet valve, and the liquid medicine pipe is provided with a liquid inlet valve; an impeller 25 driven by air flow is arranged in the secondary air inlet pipe, and the impeller rotating shaft is in transmission connection with an air inlet valve rod 27 and an air inlet valve rod 28. The air flow of the secondary air inlet pipe drives the impeller to rotate, and the air inlet valve rod and the liquid inlet valve rod are synchronously controlled by the impeller to rotate so as to control the air inlet valve and the liquid inlet valve to be periodically opened and closed, so that periodic pneumatic atomization in the atomization tank is realized. The improvement can control the total amount of air flow into the atomizing tank without reducing the air flow pressure and flow rate during atomization of the atomizing tank.
In this scheme, one-level nozzle locates and is close to jar body lateral wall department, and the case axis and the impeller axis of admission valve and feed liquor valve are parallel, and the outer wall of atomizing jar is equipped with gear box 29, and admission valve rod 27, feed liquor valve rod 28 and impeller 25 pivot all extend to in the gear box, and the impeller pivot is located between admission valve rod and the feed liquor valve rod, through gear drive between impeller pivot and admission valve rod, the feed liquor valve rod.
In this scheme, aerial fog pipe, liquid medicine pipe, second grade intake pipe all set up in flexible pipeline assembly 30, and pipeline assembly is through the interface detachable connection that corresponds with atomizing bottle and liquid medicine bottle. The structure can facilitate the disassembly, the assembly, the movement and the cleaning of the atomizing bottle and the liquid medicine bottle. Under the premise of the scheme, the atomization tank can be arranged in the sound insulation box 31, so that the sound insulation effect is enhanced.
Claims (6)
1. A pneumatic atomizing drug delivery device, characterized in that: the device comprises an atomization end and a drug administration end, wherein the atomization end is provided with an atomization tank, the bottom of the atomization tank is provided with a primary nozzle, the lower end of the primary nozzle is provided with a primary air inlet, and the outlet of the primary nozzle is provided with a liquid spraying port; the top of the tank body is provided with a fog outlet; the administration end is provided with an atomization bottle and a liquid medicine bottle, and the liquid medicine bottle is connected with a liquid spraying port of the tank body through a liquid medicine pipe; the bottom of the atomizing bottle is provided with a secondary nozzle, the lower end of the secondary nozzle is provided with a secondary air inlet, the outlet of the secondary nozzle is provided with a spray opening, the spray opening is connected with the spray outlet of the tank body through an aerosol pipe, the top of the atomizing bottle is provided with a breathing opening, and the breathing opening is connected with an oxygen mask; the first-stage air inlet is connected with a first-stage air inlet pipe, and the second-stage air inlet is connected with a second-stage air inlet pipe;
the primary air inlet pipe is provided with an air inlet valve, and the liquid medicine pipe is provided with a liquid inlet valve; an impeller driven by air flow is arranged in the secondary air inlet pipe, and a rotating shaft of the impeller is in transmission connection with a valve rod of the air inlet valve and a valve rod of the liquid inlet valve;
the primary nozzle is arranged at a position close to the side wall of the tank body, the axes of valve cores of the air inlet valve and the liquid inlet valve are parallel to the axis of the impeller, a gear box is arranged on the outer wall of the atomization tank, the air inlet valve rod, the liquid inlet valve rod and the impeller rotating shaft are all extended into the gear box, the impeller rotating shaft is positioned between the air inlet valve rod and the liquid inlet valve rod, and the impeller rotating shaft is in gear transmission with the air inlet valve rod and the liquid inlet valve rod.
2. A pneumatic nebulized drug delivery device according to claim 1, wherein: a liquid suction pipe is arranged in the atomization tank, one end of the liquid suction pipe is connected to the bottom of the atomization tank, and the other end of the liquid suction pipe is connected to the outlet of the primary nozzle through a venturi tube.
3. A pneumatic nebulized drug delivery device according to claim 1, wherein: a gas phase balance pipe is connected between the liquid medicine bottle and the atomizing bottle.
4. A pneumatic nebulized drug delivery device according to claim 1, wherein: the oxygen mask is equipped with the breather valve, and the breather valve is equipped with circular shape through-hole, and the front end and the rear end of through-hole all are equipped with spacingly, are equipped with the foam ball in the through-hole, and the front end and the oxygen mask intercommunication of through-hole, the lateral wall are equipped with front opening and back opening, and the front opening is equipped with the expiration pipe with outside intercommunication, and expiration pipe is equipped with the check valve, and back opening and atomizing bottle's breathing mouth intercommunication, the rear end and the expiration pipe intercommunication of through-hole.
5. A pneumatic nebulized drug delivery device according to claim 1, wherein: the aerosol pipe, the liquid medicine pipe and the secondary air inlet pipe are arranged in a flexible pipeline assembly, and the pipeline assembly is detachably connected with the atomizing bottle and the liquid medicine bottle through corresponding interfaces.
6. A pneumatic nebulized drug delivery device according to claim 1, wherein: the atomizing tank is arranged in the sound insulation box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210189613.9A CN114522306B (en) | 2022-02-28 | 2022-02-28 | Pneumatic atomization drug delivery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210189613.9A CN114522306B (en) | 2022-02-28 | 2022-02-28 | Pneumatic atomization drug delivery device |
Publications (2)
| Publication Number | Publication Date |
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| CN114522306A CN114522306A (en) | 2022-05-24 |
| CN114522306B true CN114522306B (en) | 2023-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210189613.9A Active CN114522306B (en) | 2022-02-28 | 2022-02-28 | Pneumatic atomization drug delivery device |
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| Country | Link |
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| CN (1) | CN114522306B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6193649B1 (en) * | 1998-09-11 | 2001-02-27 | Asahi Kogaku Kogyo Kabushiki Kaisha | Endoscope air sending device |
| JP2005102899A (en) * | 2003-09-30 | 2005-04-21 | Alfresa Pharma Corp | Ultrasonic atomizing device |
| CN202988483U (en) * | 2012-11-14 | 2013-06-12 | 马琳 | Pulse type automatic regular oil filling device for rack |
| CN108295345A (en) * | 2018-03-22 | 2018-07-20 | 何德学 | A kind of medical treatment atomizer |
| CN108579387A (en) * | 2018-06-29 | 2018-09-28 | 苏州奥然日用品有限公司 | A kind of medicament atomising device for chemical emission processing |
| CN110681027A (en) * | 2019-11-06 | 2020-01-14 | 河南科技大学第一附属医院 | Closed anaesthetic mask capable of preventing anaesthetic gas from escaping |
| CN210785817U (en) * | 2019-08-20 | 2020-06-19 | 郭广冉 | Atomizing mask for pneumoconiosis treatment |
| CN211232975U (en) * | 2019-12-05 | 2020-08-11 | 成都国丰新能源科技有限公司 | High-cleanness fuel oil-gas linkage atomizing combustion stove |
| CN111529845A (en) * | 2020-05-21 | 2020-08-14 | 田春来 | Medical atomization treatment device |
| CN213074179U (en) * | 2020-08-05 | 2021-04-30 | 晋江市深沪镇朝宗农场 | Sprayer more comfortable to carry |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090325758A1 (en) * | 2008-06-09 | 2009-12-31 | Bruce Ferguson | Hydrau-Linear Automatic Bicycle Transmission |
-
2022
- 2022-02-28 CN CN202210189613.9A patent/CN114522306B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6193649B1 (en) * | 1998-09-11 | 2001-02-27 | Asahi Kogaku Kogyo Kabushiki Kaisha | Endoscope air sending device |
| JP2005102899A (en) * | 2003-09-30 | 2005-04-21 | Alfresa Pharma Corp | Ultrasonic atomizing device |
| CN202988483U (en) * | 2012-11-14 | 2013-06-12 | 马琳 | Pulse type automatic regular oil filling device for rack |
| CN108295345A (en) * | 2018-03-22 | 2018-07-20 | 何德学 | A kind of medical treatment atomizer |
| CN108579387A (en) * | 2018-06-29 | 2018-09-28 | 苏州奥然日用品有限公司 | A kind of medicament atomising device for chemical emission processing |
| CN210785817U (en) * | 2019-08-20 | 2020-06-19 | 郭广冉 | Atomizing mask for pneumoconiosis treatment |
| CN110681027A (en) * | 2019-11-06 | 2020-01-14 | 河南科技大学第一附属医院 | Closed anaesthetic mask capable of preventing anaesthetic gas from escaping |
| CN211232975U (en) * | 2019-12-05 | 2020-08-11 | 成都国丰新能源科技有限公司 | High-cleanness fuel oil-gas linkage atomizing combustion stove |
| CN111529845A (en) * | 2020-05-21 | 2020-08-14 | 田春来 | Medical atomization treatment device |
| CN213074179U (en) * | 2020-08-05 | 2021-04-30 | 晋江市深沪镇朝宗农场 | Sprayer more comfortable to carry |
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| Publication number | Publication date |
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| CN114522306A (en) | 2022-05-24 |
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