CN109939320B - Nasopharynx ventilation pipeline - Google Patents
Nasopharynx ventilation pipeline Download PDFInfo
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- CN109939320B CN109939320B CN201910335345.5A CN201910335345A CN109939320B CN 109939320 B CN109939320 B CN 109939320B CN 201910335345 A CN201910335345 A CN 201910335345A CN 109939320 B CN109939320 B CN 109939320B
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- 238000009423 ventilation Methods 0.000 title claims abstract description 79
- 210000001989 nasopharynx Anatomy 0.000 title abstract description 32
- 210000003300 oropharynx Anatomy 0.000 claims abstract description 6
- 210000001015 abdomen Anatomy 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 12
- 230000006378 damage Effects 0.000 claims description 10
- 238000012377 drug delivery Methods 0.000 claims description 9
- 239000013013 elastic material Substances 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 2
- 230000000241 respiratory effect Effects 0.000 claims description 2
- 230000035515 penetration Effects 0.000 claims 1
- 238000001647 drug administration Methods 0.000 abstract description 11
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 239000003814 drug Substances 0.000 description 26
- 210000003800 pharynx Anatomy 0.000 description 12
- 210000003026 hypopharynx Anatomy 0.000 description 6
- 238000002627 tracheal intubation Methods 0.000 description 6
- 206010002091 Anaesthesia Diseases 0.000 description 5
- 230000037005 anaesthesia Effects 0.000 description 5
- 238000007726 management method Methods 0.000 description 5
- 210000004400 mucous membrane Anatomy 0.000 description 5
- 210000003928 nasal cavity Anatomy 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 230000029058 respiratory gaseous exchange Effects 0.000 description 4
- 210000002345 respiratory system Anatomy 0.000 description 4
- 230000007794 irritation Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000006213 oxygenation reaction Methods 0.000 description 3
- 230000000638 stimulation Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000002695 general anesthesia Methods 0.000 description 2
- 210000004704 glottis Anatomy 0.000 description 2
- 210000004072 lung Anatomy 0.000 description 2
- 210000000214 mouth Anatomy 0.000 description 2
- 210000004877 mucosa Anatomy 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 208000005392 Spasm Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 210000003484 anatomy Anatomy 0.000 description 1
- 230000003110 anti-inflammatory effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000002409 epiglottis Anatomy 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 210000000867 larynx Anatomy 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005399 mechanical ventilation Methods 0.000 description 1
- 230000009854 mucosal lesion Effects 0.000 description 1
- 210000002850 nasal mucosa Anatomy 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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- Medicinal Preparation (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The embodiment of the invention discloses a nasopharynx ventilation pipeline which comprises an inflatable bag, a drug administration bag and a main body pipe, wherein the main body pipe is shaped according to the natural radian of a nasopharynx air channel and is arc-shaped, and is provided with a proximal end for penetrating into an oropharynx part and a distal end positioned outside a nasal vestibule; the main body tube is internally provided with a ventilation cavity extending from a distal end to a proximal end so as to respectively form a distal ventilation opening and a distal ventilation opening, the inflatable bag is arranged at the proximal end and is provided with a cylindrical space, the inner cavity of the inflatable bag is communicated with a distal inflation valve of the inflatable tube cavity, and the proximal ventilation opening is tilted towards the abdomen side of the tube body back to the axis at the proximal end of the ventilation cavity so as to form a tilting part of the guiding end of the proximal ventilation opening. The nasopharynx ventilation pipeline has the characteristics of simple structure, convenience in operation and low cost, and is easy to popularize and use.
Description
Technical Field
The embodiment of the invention relates to the technical field of medical instruments, in particular to a nasopharynx ventilation pipeline.
Background
In clinical medicine, the nasopharyngeal airway is an important tool widely used for assisting ventilation of patients when general anesthesia and critical case emergency treatment are performed on the patients, and whether success of establishing an artificial airway is rapid and effective directly affects the success rate of general anesthesia and rescue. The traditional operation method is that the nasopharynx airway is placed along the inherent oral cavity of the patient at the junction of the inlet pharynx and the laryngopharynx, and the patient end of the airway directly reaches the entrance of the sound. However, due to the complexity of human anatomy and the difference in personal tolerance, there are still causes of nasal mucosal lesions, or ventilation failure. And the traditional nasopharynx airway can not carry out surface anesthesia on the nasal cavity and the larynx of a patient, and is usually carried out by adopting another set of special anesthesia tool in clinic, so that the operation is complex, the time is wasted, and the rescuing time of the patient is delayed. The main reasons are as follows:
Firstly, in the traditional nasal ventilation device, the structural design is unreasonable, no independent dosing anesthesia and lubrication channel exists, and the stress of a patient is large when the nasal ventilation device is used for placing a tube. Secondly, capillary blood vessels of nasal mucosa are abundant and fragile, and bleeding is easy to occur, so that the patient can inhale by mistake and ventilation fails. At the same time, the nervous sensitivity of the mucous membrane of the nasal cavity and the laryngeal inlet of the upper respiratory tract also causes the tension respiratory tract contraction, the agitation of the patient, the difficult intubation, or the stimulation to cause the respiratory tract spasm and the ventilation failure.
In addition, in the traditional nasal ventilation device, a ventilation joint is not arranged, a breathing machine cannot be effectively connected, mechanical ventilation cannot be carried out on a patient, and discomfort of the patient is easily caused by long-time retention of a traditional nasopharyngeal airway. When the traditional nasal ventilation device is used for inserting into the nasal cavity and the throat, the doctor cannot administer anti-inflammatory and lubricating treatment in real time, so that the damage to the patient in the pressing and tube drawing processes is easily caused.
Disclosure of Invention
Therefore, the embodiment of the invention provides a nasopharyngeal airway tube, which can avoid the defect of damage to mucous membranes of nasal cavities and throat cavities in the intubation process and can also overcome the problem of high resistance in intubation.
In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:
The nasopharynx ventilation pipeline provided by the embodiment of the invention comprises an inflatable bag, an administration bag and a main body pipe, wherein the main body pipe is formed according to the natural radian of the nasopharynx gas pipeline and is arc-shaped, and is provided with a proximal end for penetrating into the oropharynx part and a distal end positioned outside the nasal vestibule; the main body tube is internally provided with a ventilation cavity extending from a distal end to a proximal end so as to respectively form a distal ventilation opening and a distal ventilation opening, the inflatable bag is arranged at the proximal end and is provided with a cylindrical space, the inner cavity of the inflatable bag is communicated with a distal inflation valve of the inflatable tube cavity, and the proximal ventilation opening is tilted towards the abdomen side of the tube body back to the axis at the proximal end of the ventilation cavity so as to form a tilting part of the guiding end of the proximal ventilation opening.
Further, the included angle of the axis of the tilting part at the proximal end of the main body tube relative to the axis of the distal end of the main body tube is 120-150 degrees.
Further, the distal end of the proximal vent opening is spherically shaped to form a semi-blind end guide head.
Further, an auxiliary vent is provided on the opposite side of the proximal vent opening of the main body tube, and the intermediate portion between the proximal vent opening and the auxiliary vent is spherical.
Further, the inflatable bag is arranged on the outer side of the proximal end of the main body pipe, a proximal inflation port is formed in the proximal end of the main body pipe and the inner side of the inflatable bag, the distal end of the main body pipe extends to the inflation valve, and therefore an inflation cavity is formed, and the shape of the proximal inflatable bag is cylindrical.
Further, still include the medicine feeding bag, the medicine feeding bag is made by high elastic material, the medicine feeding bag with the medicine feeding pipe intercommunication, and independent of ventilation chamber and inflation chamber, its distal end extends for medicine feeding pipe and medicine feeding valve, including extending the free section medicine feeding pipe outside the main part, just the medicine feeding bag wall is provided with the medicine feeding hole, the medicine feeding bag all sets up the medicine feeding opening in controlling, fore-and-aft and upper and lower direction, just the shape of medicine feeding bag is the fusiform.
Further, the administration balloon is fastened to the surface of the balloon in the collapsed state of the balloon.
Further, the device also comprises a ventilation joint, wherein the ventilation joint is arranged at the distal end of the main body tube, so that a ventilation opening is formed at the distal end, the distal ventilation joint is a joint of a standard 15mm outer cone, and the ventilation joint is made of a hard material and can be connected with a standard breathing pipeline.
Further, the inflatable bag is an inflatable bag, and the material of the inflatable bag is a flexible material, and the Shore hardness of the inflatable bag is less than or equal to 35.
Further, the main body pipe is manufactured by a multi-cavity extrusion or stretching process, and the main body pipe is made of an elastic material, and the Shore hardness of the main body pipe is less than or equal to 75.
The embodiment of the invention has the following advantages: according to the nasopharynx ventilation pipeline provided by the embodiment of the invention, the medicine liquid can be uniformly coated through the medicine adding bag structure, so that the irritation of the laryngopharynx intubation is reduced, and the damage of the airway management process is reduced; the nasopharynx ventilation pipeline is provided with the inflatable air bag, so that the tongue body can be effectively supported, the air passage can be opened, the air passage blocking and ventilation level can be improved, the oxygen cloud positive pressure at the entrance of the voice can be promoted, and the oxygenation effect of the lung can be improved; the nose-throat ventilation pipeline is provided with the end connector, so that the nose-throat ventilation pipeline can be effectively connected with a breathing machine, and the safety level of airway management is improved; the drug administration bag adopts an independent cavity design, so that the inflation of the air bag is not interfered; the drug administration bag is of a fusiform structure design, and can be tightly fastened with the inflatable bag in the tube placing process, so that the damage of the airway in the tube placing process is reduced, and the airway mucosa is better.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be obtained from the extensions of the drawings provided without inventive effort.
The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the invention, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present invention, should fall within the ambit of the technical disclosure.
Fig. 1 is a schematic perspective view of a nasopharynx ventilation tube according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a semi-sectional perspective structure of a nasopharynx ventilation tube according to an embodiment of the present invention.
Fig. 3 is an enlarged sectional schematic view of an inflatable bag in a nasopharynx ventilation tube according to an embodiment of the present invention.
Fig. 4 is an enlarged schematic view of the structure of an administration valve in a nasopharyngeal airway according to an embodiment of the present invention.
In the figure: 1. a main body tube; 2. punching an air bag; 3. a drug administration capsule; 4. a vent fitting; 5. an inflation tube; 6. an inflation valve; 7. a drug administration tube; 8. a dosing valve; 9. a ventilation chamber; 10. an air-filling cavity; 11. a dosing chamber; 12. a proximal vent opening; 13. a drug administration hole; 14. a distal vent opening; 15. an inflation inlet; 16. a drug administration port; 17. a knob; 18. the drug delivery port of the drug delivery valve.
Detailed Description
Other advantages and advantages of the present invention will become apparent to those skilled in the art from the following detailed description, which, by way of illustration, is to be read in connection with certain specific embodiments, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 4, the main structure of the nasopharynx ventilation tube provided by the embodiment of the invention is in bilateral symmetry and is provided with a central symmetry plane, and the main structure comprises a main tube 1, an inflatable bag 2, an administration bag 3, a ventilation joint 4, an inflatable tube 5, an inflatable valve 6, an administration tube 7 and an administration valve 8. The main body tube 1 is of a three-cavity structure design and comprises a ventilation cavity 9, an inflation cavity 10 and a dosing cavity 11. The proximal end of the main body tube 1 is sequentially connected with an inflatable bag 2 and a drug administration bag 3; the patient end of the air inflation cavity 10 is provided with an air inflation port 15 in the air inflation bag 2, the distal end of the air inflation cavity extends to form a free air inflation tube 5, and the distal end of the air inflation tube 5 is provided with an air inflation valve 6; the medicine feeding bag 3 is wrapped on the periphery of the air bag 2, the medicine feeding bag 3 and the air bag 2 are provided with a medicine feeding opening 16 at the joint gap of the main body pipe and communicated with the medicine feeding cavity 11, the far end of the medicine feeding cavity 11 extends to be a freeness medicine feeding pipe 7, and the far end of the medicine feeding pipe is provided with a medicine feeding valve 8. The body tube 1 has a vent lumen 9 extending from a distal end to a proximal end therein, thereby forming a distal vent opening 14 and a proximal vent opening 12, respectively. An inflatable balloon 2 is provided at the proximal end of the main body tube 1 so as to conform to the throat of a patient and to open the airway in use. The inflatable bag 2 is of a cylindrical structure, an inflation port 15 in the bag is communicated with the distal end of the inflation cavity 10, and the distal end is provided with a free inflation tube 5 and an inflation valve 6, so that an independent inflatable bag closed channel is formed. The administration bag 3 is designed in a fusiform structure in appearance, and an administration opening 16 in the bag is communicated with the distal end of the administration cavity 11, wherein the distal end is provided with a free administration tube 7 and an administration valve 8, so that an independent administration closed channel is formed.
The nasopharyngeal airway tube provided by the embodiment of the invention can be directly used for providing respiratory ventilation for patients with anesthesia in operation. At this time, the nasopharynx ventilation pipe is put into the oral cavity and the pharyngeal throat of the patient, the inflatable bag 2 is fixed at the epiglottis fold of the tongue root after being inflated, the tongue body can be supported, the oropharynx air passage is fully opened, the laryngopharynx and the upper respiratory tract are isolated for ventilation, and the ventilation cavity 9 of the main body pipe 1 can be directly used for ventilating the patient with anesthesia in operation, so that the oxygenation effect of the patient is improved.
The nasopharyngeal airway tube provided by the embodiment of the invention can be used for assisting administration. In many cases, the catheter is left in the throat for a long time to stimulate the throat greatly, and at this time, the evenly distributed administration holes 13 on the administration bag 3 can be used for carrying out jet administration on surrounding tissues, so that the stimulation of throat ventilation to the throat and the glottis is reduced, the damage of the glottis and the throat of a patient is improved, the airway management level is improved, and the patient is better protected.
According to the nasopharynx ventilation pipeline provided by the embodiment of the invention, the distal end of the administration tube 7 is connected with the administration valve 8, and the distal end of the administration valve is provided with an administration valve administration port 18 which can be connected with an administration pump or a syringe.
According to the nasopharynx ventilation pipeline provided by the embodiment of the invention, the main body pipe 1 is made of a flexible material, the ventilation cavity 9, the inflation cavity 10 and the administration cavity 11 are not communicated with each other, the proximal end of the ventilation cavity 9 is a proximal ventilation opening 12, and the proximal ends of the inflation cavity 10 and the administration cavity 11 are blind ends.
In the nasopharynx ventilation pipe provided by the embodiment of the invention, the inflatable bag 2 is an inflatable air bag, and the nasopharynx ventilation pipe further comprises an inflatable tube 5 and an inflatable valve 6 connected to the inflatable air bag. The inflation tube may be connected to an inflation device, such as an air pump, or an inflator, or the like (not shown).
In the nasopharyngeal airway tube according to the embodiment of the present invention, the balloon 2 is made of a flexible material, and may be made of a material having a shore a hardness of less than 35, preferably less than 30, and particularly preferably less than 20. The inflatable air bag 2 can be better attached to the throat of a patient by adopting the inflatable air bag made of flexible materials.
In the nasopharyngeal airway tube provided by the embodiment of the present invention, the administration bag 3 is an administration inflatable bag, and the nasopharyngeal airway tube further includes an administration tube 7 and an administration valve 8 connected to the administration bag 3. The administration valve 5 may be connected to an administration pump, or an administration cartridge, etc. (not shown).
According to the nasopharynx ventilation pipeline provided by the embodiment of the invention, the drug administration bag 3 is made of a high-elasticity material, the elastic material can be better tightly fastened with the bag body before the inflatable bag 2 is inflated, the fixed bag body part can be better attached to the main body pipe 1, and mucous membrane stimulation in the pipe placing process is reduced.
The nasopharynx ventilation pipeline provided by the embodiment of the invention is provided with the medicine adding bag structure, so that the medicine liquid can be uniformly coated, the irritation of the cannula at the laryngopharynx part is reduced, and the damage of the airway management process is reduced.
The nasopharynx ventilation pipeline provided by the embodiment of the invention is provided with the inflatable air bag, so that the tongue body can be effectively supported, the air passage can be opened, the air passage blocking ventilation level can be improved, the oxygen cloud positive pressure at the entrance of the voice can be promoted, and the lung oxygenation effect can be improved.
The nasopharynx ventilation pipeline provided by the embodiment of the invention can be effectively connected with a breathing machine due to the arrangement of the machine end connector, so that the safety level of airway management is improved.
The nasopharynx ventilation pipeline provided by the embodiment of the invention does not interfere with the inflation of the air bag due to the independent cavity design adopted by the drug administration bag.
According to the nasopharynx ventilation pipeline provided by the embodiment of the invention, the drug administration bag is of a fusiform structure design, and the inflatable air bag can be tightly fastened in the tube placing process, so that the damage of the airway in the tube placing process is reduced, and the airway mucosa is better.
The nasopharynx ventilation pipeline provided by the embodiment of the invention has the advantages of simple structure, convenience in operation, low cost and easiness in popularization and use.
The nasopharyngeal airway tube provided by the embodiment of the invention can avoid the defect of damage to mucous membranes of nasal cavities and pharyngeal cavities in the intubation process. The invention also aims to provide a nasopharyngeal airway tube which can overcome the problem of high resistance during intubation.
The nasopharynx ventilation pipeline provided by the embodiment of the invention can avoid the problem that a proximal ventilation opening of a ventilation cavity is accidentally blocked by a tissue structure of a throat part.
The nasopharynx ventilation pipeline provided by the embodiment of the invention can be used for conveniently and real-time administration treatment, and can be used for uniformly coating the liquid medicine on the surfaces of the mucous membranes of the oropharynx and the laryngopharynx, so that the irritation injury of the oropharynx and the laryngopharynx is reduced.
According to the nasopharynx ventilation pipeline provided by the embodiment of the invention, the oropharyngeal cavity and the nasopharynx cavity of a patient can be opened, high-pressure oxygen cloud is formed at the proximal end of the ventilation pipeline, and the oxygen supply ventilation effect is improved.
While the invention has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (5)
1. A nasopharyngeal airway tube comprising an inflatable bladder, an administration bladder, and a main body tube shaped according to the natural arc of the nasopharyngeal airway and having a proximal end for penetration into the oropharynx and a distal end outside the nasal vestibule; the main body tube is internally provided with a ventilation cavity extending from a distal end to a proximal end so as to respectively form a distal ventilation opening and a proximal ventilation opening, the inflatable bag is arranged at the proximal end and is provided with a cylindrical space, the inner cavity of the inflatable bag is communicated with a distal inflation valve of the inflatable tube cavity, and the proximal ventilation opening is tilted towards the abdomen side of the tube body back to the axis at the proximal end of the ventilation cavity so as to form a proximal ventilation opening guide end tilting part;
The inflatable bag is arranged outside the proximal end of the main body pipe, proximal inflation openings are formed in the proximal end of the main body pipe and the inner side of the inflatable bag, and the distal end of the main body pipe extends to the inflation valve so as to form an inflation cavity;
The drug delivery bag is made of high-elasticity materials, is communicated with the drug delivery pipe, is independent of the ventilation cavity and the inflation cavity, extends to form the drug delivery pipe and the drug delivery valve at the far end, comprises a free section drug delivery pipe outside the extension main body, is provided with drug delivery holes on the wall surface, is provided with drug delivery openings in the left-right direction, the front-back direction and the up-down direction, is in a shuttle shape, and can be tightly fastened with the inflation air bag in the pipe placement process, so that the damage to the airway in the pipe placement process is reduced; when the inflatable bag is in a collapsed state, the administration bag is tightly attached to the surface of the inflatable bag;
the included angle of the axis of the tilting part at the proximal end of the main body tube relative to the axis at the distal end of the main body tube is 120-150 degrees; an auxiliary vent is arranged on the opposite side of the proximal vent opening of the main body tube, and the middle part between the proximal vent opening and the auxiliary vent is in a spherical surface.
2. The nasopharyngeal airway tube of claim 1, wherein a distal end of the proximal airway opening is spherically shaped to form a semi-blind end guide.
3. The nasopharyngeal airway tube of claim 1, further comprising a vent fitting at a distal end of said main body tube, thereby forming a vent opening at the distal end of the main body tube, and wherein said vent fitting is a fitting of a standard 15mm external cone and wherein said vent fitting is of a rigid material adapted to engage a standard respiratory line.
4. The nasopharyngeal airway of claim 1, wherein the balloon is an inflatable balloon and the balloon material is a flexible material having a shore hardness of no greater than 35.
5. The nasopharyngeal airway tube of claim 1, wherein said main tube is made by a multi-lumen extrusion or stretching process, and said main tube is made of an elastic material having a shore hardness of less than or equal to 75.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910335345.5A CN109939320B (en) | 2019-04-24 | 2019-04-24 | Nasopharynx ventilation pipeline |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910335345.5A CN109939320B (en) | 2019-04-24 | 2019-04-24 | Nasopharynx ventilation pipeline |
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| CN109939320A CN109939320A (en) | 2019-06-28 |
| CN109939320B true CN109939320B (en) | 2024-08-16 |
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| CN201910335345.5A Active CN109939320B (en) | 2019-04-24 | 2019-04-24 | Nasopharynx ventilation pipeline |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110368562B (en) * | 2019-07-31 | 2022-01-18 | 河北医科大学第二医院 | Oxygen inhalation tube for posterior naris |
| CN110812641A (en) * | 2019-12-11 | 2020-02-21 | 姜虹 | Multi-source last-exhaling CO2Visual laryngeal mask is assisted in monitoring |
| CN111632247A (en) * | 2020-06-10 | 2020-09-08 | 东营市人民医院 | Gastrointestinal surgery honeycomb duct |
| CN112618336B (en) * | 2020-12-18 | 2023-04-07 | 河南科技大学第一附属医院 | Device for cleaning nasal cavity |
| CN115671513B (en) * | 2022-09-16 | 2023-07-18 | 中国人民解放军总医院第六医学中心 | Nasopharynx supporting device |
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