AU2019100778A4 - Medical oxygen cannula - Google Patents
Medical oxygen cannula Download PDFInfo
- Publication number
- AU2019100778A4 AU2019100778A4 AU2019100778A AU2019100778A AU2019100778A4 AU 2019100778 A4 AU2019100778 A4 AU 2019100778A4 AU 2019100778 A AU2019100778 A AU 2019100778A AU 2019100778 A AU2019100778 A AU 2019100778A AU 2019100778 A4 AU2019100778 A4 AU 2019100778A4
- Authority
- AU
- Australia
- Prior art keywords
- transition tube
- nasal prongs
- oxygen
- transition
- temperature
- 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.)
- Ceased
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 53
- 239000001301 oxygen Substances 0.000 title claims abstract description 53
- 230000007704 transition Effects 0.000 claims abstract description 60
- 239000000945 filler Substances 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 abstract description 5
- 241001631457 Cannula Species 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 4
- 230000036760 body temperature Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002906 medical waste Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Pulmonology (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)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
Abstract The invention discloses a medical oxygen cannula, comprising a body, a transition tube and two nasal prongs, wherein the body is connected with the transition tube, the transition tube is connected with the two nasal prongs in the 5 radial direction, and the inner walls at the joints where the nasal prongs meet the transition tube have a smooth transition arc structure. The invention improves the structure of the inner walls at the joints where the transition tube meets the nasal prongs to prevent turbulence of airflow and reduce noise; in addition, the invention enlarges the interior diameter of the transition tube and 0 that of the nasal prongs to reduce the flow rate of pressurized gas, which further prevents the noise caused by the flow of pressurized gas. Moreover, the transition tube is provided with breathable filler inside, which also helps to reduce airflow velocity. Figure 1
Description
Medical Oxygen Cannula
Field of the Invention
The invention relates to the field of medical equipment, and more particularly to a medical oxygen cannula.
Background the Art
Medical oxygen refers to oxygen separated from the atmosphere using the 0 cryogenic separation method for use in medical treatment of patients. It is generally stored in a gas cylinder and sent to medical facilities. The national purity standard for cylinder-stored medical oxygen is >99.5%, and there are strict limits on CO2 content, COi content, pH value and gaseous oxides. Cylinder-stored medical oxygen is mostly pressurized and directly delivered to the nostrils of 5 patients by tubing.
Existing oxygen cannulas are made of transparent plastic materials and provided with two nasal prongs to facilitate breathing; however, because the interior diameter is usually small, the cannulas would make a noise when delivering pressurized oxygen, influencing patients in the same ward. Although a 20 smaller oxygen flow rate can reduce the noise, it cannot meet the oxygen demand of patients.
Furthermore, once the oxygen supply valve is open, oxygen will be continuously delivered to the patient until the doctor confirms more oxygen would be unnecessary. In fact, the patient needn't wear the oxygen supply 25 equipment all the time during oxygen supply. More specifically, when the patient exhales, the oxygen supplied is wasted, because it cannot be taken in by the patient, which is a waste of resource.
2019100778 18 Jul 2019
A valve can be used to close the oxygen supply tube during oxygen supply. For example, when the patient doesn't need oxygen supply for the time being, he/she can turn it off. However, the oxygen wasted when the patient exhales cannot be saved. The amount of oxygen wasted is not much for individuals, but 5 taking all patients into consideration, the waste is huge. Therefore, to save resources, it is essential to develop a medical oxygen equipment that prevents waste.
Summary of the Invention
To address the defects of the prior art, the invention provides a medical oxygen cannula, which delivers oxygen to patients without producing noise, thereby reducing influence.
To achieve the said purpose, the invention provides a medical oxygen cannula, comprising a body, a transition tube and two nasal prongs, wherein the 5 body is connected with the transition tube, the transition tube is connected with the two nasal prongs in the radial direction, and the inner walls at the joints where the nasal prongs meet the transition tube have a smooth transition arc structure.
Furthermore, the interior diameter of the transition tube and that of the 20 nasal prongs are larger than the interior diameter of the body.
Furthermore, the transition tube is provided with breathable filler inside.
Furthermore, the breathable filler has a porosity of 63% ~ 83%.
Furthermore, the nasal prongs are respectively provided with a temperature inductor on the front end.
Furthermore, the body is provided with a temperature sensing valve, which is connected with the temperature inductors through a controller.
2019100778 18 Jul 2019
Furthermore, the nasal prongs and the transition tube are integrally injection molded.
Furthermore, the body and the transition tube are flexibly and hermetically plugged together.
Furthermore, the transition tube has an interior diameter of 10 ~ 12mm.
Compared with the prior art, the invention has the advantages that the invention improves the structure of the inner walls at the joints where the transition tube meets the nasal prongs to prevent turbulence of airflow and reduce noise; in addition, the invention enlarges the interior diameter of the 0 transition tube and that of the nasal prongs to reduce the flow rate of pressurized gas, which further prevents the noise caused by the flow of pressurized gas. Moreover, the transition tube is provided with breathable filler inside, which also helps to reduce the airflow velocity.
By providing a temperature inductor on the front end of each nasal prong, 5 the invention can detect the temperature of exhaled air, so as to monitor the patient's body temperature and control the temperature sensing valve according to the temperature inductors, thus preventing waste in continuous air supply; because the temperature of exhaled air is relatively high, the temperature sensing valve will close oxygen supply in time according to information from the 20 temperature inductors, thus preventing waste of oxygen when the patient exhales.
Description of the Drawings
To illustrate technical solutions in the embodiments of the invention or in the prior art more clearly, the accompanying drawings used in description of the embodiments or prior art are briefly introduced hereinafter. Apparently, the
2019100778 18 Jul 2019 accompanying drawings described hereinafter merely show some embodiments of the invention. Those skilled in the art may, without creative efforts, derive other drawings based on the structures shown in the accompanying drawings.
Figure 1 provides a structural representation of the invention;
Figure 2 provides a partially enlarged view of the transition tube and the nasal prongs;
Reference signs:
1-body, 2-transition tube, 21-breatheable filler, 3-nasal prong, 31-temperature inductor, 4-temperature sensing valve.
Detailed Description of the Invention
The technical solutions in the preferred embodiments of the invention will be clearly and completely described hereinafter with reference to the accompanying drawings. Apparently, the preferred embodiments are only part of 5 the embodiments of the invention, not all of the embodiments. Other embodiments obtained by those skilled in the art based on the preferred embodiments of the invention without creative work all fall in the scope of protection of the invention.
Orientational terms herein (such as up, down, left, right, front and back) are 20 only used to explain relative positions and movements of the components in a particular posture (as shown in the accompanying drawings). When the particular posture is changed, the orientational terms change accordingly.
In addition, the technical solutions in the embodiments can be combined but only on the premise that the combination can be achieved by those skilled in 25 the art. When combinations of the technical solutions are contradictory or cannot be achieved, it should be regarded that the combination neither exist nor fall into the scope of protection of the invention.
2019100778 18 Jul 2019
As shown in Figure 1, a medical oxygen cannula, comprising a body 1, a transition tube 2 and two nasal prongs 3, wherein the body 1 and the transition tube 2 are connected, the transition tube 2 is connected with the two nasal prongs 3 in the radial direction, and the inner walls at the joints where the nasal 5 prongs 3 meet the transition tube 2 have a smooth transition arc structure.
In traditional medical oxygen cannulas, the inner walls at the joints of the transition tube 2 and the nasal prongs 3 are rectangular, and when pressurized oxygen passes, turbulence is likely to occur, causing noise with locally excessive airflow velocity. The invention improves the inner wall structure to a smooth 0 transition arc structure, which prevents laminar airflow from becoming turbulent and reduces noise.
Furthermore, the interior diameter of the transition tube 2 and that of the nasal prongs 3 are larger than the interior diameter of the body 1. By enlarging the interior diameters of the transition tube 2 and the nasal prongs 3, particularly 5 above the interior diameter of the body 1, when air flows from the body 1 to the transition tube 2 and then to the nasal prongs 3, the flow rate drops as the cross section increases, which combined with the smooth transition arc structure at the joints of the transition tube 2 and the nasal prongs 3, greatly reduces the chances of noise.
Same as traditional oxygen cannulas, the body 1 also has an interior diameter of 6 ~ 10mm, but the interior diameters of the transition tube 2 and the nasal prongs 3 are enlarged to 10 ~ 12mm. This way, the cross sectional area of the transition tube 2 is up to 4 times larger than that of the body 1, so airflow slows down instantly when it enters the transition tube 2 and then goes quite 25 slowly into the nasal prongs 3, without making a noise.
Because the interior diameter of the transition tube 2 is larger than that of
2019100778 18 Jul 2019 the body 1, the moment air flows into the transition tube 2, it is apt to become turbulent due to abrupt increase of cross section, so breathable filler 21 is added inside the transition tube 2 to buffer airflow turbulence caused by sudden change of cross section and ensure smooth diffusion of the airflow that passes 5 through the breathable filler 21.
Preferably, the breathable filler 21 has a porosity of 63% ~ 83%, such as large-aperture activated carbon. The breathable filler can fill the transition tube 2 partially as shown in Figure 2, or completely.
By filling breathable substance in the transition tube 2, the substance with a 0 large porosity can stabilize the airflow and filter out some impurities or hazards from the airflow.
Traditionally, oxygen supply is continuous. That is, once the valve opens, oxygen will be continuously delivered to the outlets of the nasal prongs 3, whatever state the patient is in. If the patient exhales or temporarily pulls out the 5 nasal prongs 3, the oxygen supplied will be wasted.
The nasal prongs 31 are respectively provided with a temperature inductor
31. Since there is a temperature difference between exhaled air and delivered oxygen and the exhaled air temperature is usually body temperature, once the temperature inductor 31 senses exhaled air temperature, or a temperature 20 higher than the delivered oxygen temperature, the oxygen supply equipment will be controlled to suspend oxygen supply. People who temporarily pull out the nasal prongs 3 certainly know better when to suspend oxygen supply.
The temperature inductors 3 are provided not only to facilitate suspension of oxygen supply but also to monitor the patient's body temperature.
The temperature inductors 31 can be connected in a wired way with the oxygen supply control valve through a controller, which sets a temperature range
2019100778 18 Jul 2019 and a correspondence with the control valve. Since this is common in electric control equipment, no detailed description will be given herein.
Preferably, a temperature sensing valve 4 is provided on the body 1 and connected with the temperature inductors through a controller. The temperature sensing valve 4 is electric and opens or closes automatically with temperature changes based on the set temperature range.
The body 1 is usually connected with both ends of the transition tube 2, so the temperature sensing valve 4 is positioned close to the body 1 to facilitate use by the patient and the functionality as a switch.
Through combination of the temperature inductors 31 and the temperature sensing valve 4, oxygen supply can be optionally opened, for example when the patient inhales, or closed, for example when the patient exhales, to save oxygen.
To ensure oxygen supply steadiness, smooth connection between the transition tube 2 and the nasal prongs 3 is particularly important, so the transition tube 2 and the nasal prongs 3 are integrally injection molded, which achieves high smoothness of the inner walls at the joints, airflow steadiness, and noise prevention.
The body 1 and the transition tube 2 are plugged together, in particular flexibly and hermetically, the transition tube 2 and the nasal prongs 3 are in an 20 integrated structure, and the nasal prongs 3 are in direct contact with the patient.
After oxygen delivery with traditional oxygen cannulas, the body 1 is disposed of together with the transition tube 2 and the nasal prongs as medical waste. In this invention, the body 1 and the transition tube 2 are plugged together, and the transition tube 2 is made longer than the traditional structure to avoid contact of 25 the body 1 with the patient. This way, only the transition tube 2 and the nasal prongs 3 in an integrated structure are consumables, while the body 1 is reusable as a general-purpose material, thus preventing abandonment after single use,
2019100778 18 Jul 2019 reducing medical waste and saving resources.
In addition, the transition tube 2 can be added with breathable filler when necessary. Because the body 1 and the transition tube 2 are plugged together, the addition of breathable filler will not be affected by the body 1, making the 5 production easier.
While only preferred embodiments of the invention are given hereinabove, it will be appreciated by those skilled in the art that many improvements and modifications may be made without departing from the scope of the invention. It should be regarded that the improvements and modifications are within the 0 scope of protection of the invention.
Claims (5)
- Claims2019100778 18 Jul 20191. A medical oxygen cannula, comprising a body, a transition tube and two nasal prongs, wherein the body and the transition tube are connected and the transition tube is connected with the two nasal prongs in the radial direction,5 characterized in that the inner walls at the joints where the nasal prongs meet the transition tube have a smooth transition arc structure.
- 2. The medical oxygen cannula according to Claim 1, characterized in that the interior diameter of the transition tube and that of the nasal prongs are larger than the interior diameter of the body.0
- 3. The medical oxygen cannula according to Claim 2, characterized in that the transition tube is provided with breathable filler inside.
- 4. The medical oxygen cannula according to Claim 1, characterized in that the nasal prongs are respectively provided with a temperature inductor on the front end.
- 5 5. The medical oxygen cannula according to Claim 4, characterized in that the body is provided with a temperature sensing valve, which is connected with the temperature inductors through a controller.2019100778 18 Jul 2019
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2019/073800 WO2020154933A1 (en) | 2019-01-30 | 2019-01-30 | Medicinal oxygen cannula |
| AUPCT/CN2019/073800 | 2019-01-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2019100778A4 true AU2019100778A4 (en) | 2019-08-15 |
Family
ID=67547739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2019100778A Ceased AU2019100778A4 (en) | 2019-01-30 | 2019-07-18 | Medical oxygen cannula |
Country Status (2)
| Country | Link |
|---|---|
| AU (1) | AU2019100778A4 (en) |
| WO (1) | WO2020154933A1 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10300236B2 (en) * | 2012-10-31 | 2019-05-28 | Vapotherm, Inc. | Quiet nasal cannula |
| CN103706009B (en) * | 2013-12-11 | 2016-06-08 | 中国人民解放军第四军医大学 | The oxygen output control system of a kind of synchronized with breath and control method |
| JP6317647B2 (en) * | 2014-08-19 | 2018-04-25 | アトムメディカル株式会社 | Nostril cannula |
| CN206660251U (en) * | 2016-11-27 | 2017-11-24 | 中国人民解放军第四军医大学 | A kind of disposable nose cup Oxygen tube |
| CN206642192U (en) * | 2017-01-03 | 2017-11-17 | 中国人民解放军总医院 | A kind of novel oxygen inhaling device |
| CN107596524A (en) * | 2017-10-29 | 2018-01-19 | 吴彬彬 | It is a kind of can automatic-sealed closure movable plug-in Medical oxygen-absorption pipe device |
-
2019
- 2019-01-30 WO PCT/CN2019/073800 patent/WO2020154933A1/en active Application Filing
- 2019-07-18 AU AU2019100778A patent/AU2019100778A4/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020154933A1 (en) | 2020-08-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |