Nasal oxygen cannula

Abstract

This utility model discloses a nasal oxygen inhalation tube, including an oxygen supply hose with an inlet end connected to an external oxygen supply device and a nasal prong for insertion into the patient's nasal cavity. The rear end of the nasal prong is connected to the oxygen supply hose, and the front end has an outlet. An annular air bag is located inside the nasal prong. A regulating trachea is located near the nasal prong inside the oxygen supply hose. The outer diameter of the regulating trachea is smaller than the inner diameter of the oxygen supply hose. The proximal end of the regulating trachea is connected to the air bag, and the distal end extends outside the oxygen supply hose and is connected to a pressure bulb. This utility model provides a nasal oxygen inhalation tube that can reduce nasal bleeding during nasal oxygen inhalation, and is therefore particularly suitable for patients with heart failure or respiratory failure requiring prolonged nasal oxygen inhalation.

Description

Technical Field

[0001] This utility model relates to the technical field of oxygen inhalation equipment, specifically a nasal oxygen inhalation tube. Background Technology

[0002] The use of disposable oxygen tubing is very common in medical procedures. Inhaling oxygen increases the partial pressure of oxygen in the blood arteries, correcting hypoxia and maintaining normal physiological functions. Traditionally, oxygen tubing is inserted into the nostrils of the patient. However, in practice, especially for patients with heart failure or respiratory failure, the repeated irritation of the nasal cavity by the plastic tip of the tubing during hours or even longer oxygen inhalation, coupled with the dryness of the external environment, can easily cause nosebleeds in these patients.

[0003] Therefore, given the problem that existing disposable oxygen tubes can easily cause nasal bleeding in a small number of patients, there is an urgent clinical need for a nasal oxygen tube that can reduce nasal bleeding. Utility Model Content

[0004] The present invention aims to at least partially solve one of the technical problems in the related art: to provide a nasal oxygen tube that can reduce nasal bleeding during the process of nasal oxygen inhalation, and is therefore particularly suitable for patients with heart failure or respiratory failure who need to undergo nasal oxygen inhalation for a long time.

[0005] Therefore, one objective of this utility model is to provide a nasal oxygen inhalation tube, comprising an oxygen supply hose, an air inlet connected to an external oxygen supply device, and a nasal prong for insertion into the patient's nasal cavity. The rear end of the nasal prong is connected to the oxygen supply hose, and the front end has an air outlet. An annular air bladder is located inside the nasal prong. An adjustment tube is located near the nasal prong inside the oxygen supply hose, with an outer diameter smaller than the inner diameter of the oxygen supply hose. The proximal end of the adjustment tube is connected to the air bladder, and the distal end extends outside the oxygen supply hose and is connected to a pressure bulb. On one hand, the size of the nasal prong is adjusted by the air bladder, allowing it to fit snugly against the nasal cavity wall, preventing repeated movement of the tube during breathing that could irritate the nasal cavity and cause bleeding. On the other hand, the size of the nasal prong is adjusted by inflating or deflating the air bladder, thus making it suitable for different patients' nostril sizes and offering good versatility.

[0006] According to one example of this invention, the front end of the nasal tube has a hollow spherical structure, and the airbag is located within the front end of the spherical structure of the nasal tube and is arranged around the air outlet. The spherical structure of the front end of the nasal tube allows the airbag to be well contained within the front end of the nasal tube.

[0007] According to one example of this invention, the outer wall of the nasal oxygen cannula is covered with a sponge layer, a portion of which extends to the location of the air outlet. The sponge layer allows for gentler contact between the nasal cannula and the patient's nasal cavity wall, reducing irritation and thus minimizing the occurrence of nosebleeds.

[0008] According to one example of this invention, the oxygen supply hose is equipped with a humidification bottle at its inlet end for humidifying the oxygen inside the hose. The humidification bottle ensures that the oxygen delivered to the patient is more humid, keeping the nasal cavity moist during nasal inhalation and preventing nosebleeds caused by dryness. Furthermore, when the humidified oxygen comes into contact with the sponge layer at the outlet, the sponge layer absorbs the moisture from the oxygen, keeping the sponge layer moist as well.

[0009] According to one example of this utility model, the oxygen supply hose has a ring structure. The ring structure allows oxygen delivered from the inlet to the nasal cannula via two paths, ensuring a continuous supply even if one side of the hose is compressed or bent, preventing oxygen supply interruption. Furthermore, the ring structure facilitates easy attachment of the oxygen supply hose to the patient's face.

[0010] According to one example of this utility model, the portion of the regulating trachea exposed outside the oxygen supply hose is equipped with a venting valve for reducing the pressure inside the regulating trachea. The venting valve reduces the air pressure inside the regulating trachea, and in conjunction with the pressurizing action of the pressurizing bulb, it completes the control of the air pressure rise and fall within the regulating trachea.

[0011] According to one example of the present invention, the nasal plug tubes are arranged in pairs, and a pair of nasal plug tubes includes two nasal plug tubes arranged at intervals between each other.

[0012] According to one example of this invention, the oxygen supply hose is provided with multiple pairs of nasal cannulas, each pair including two nasal cannulas spaced apart. Multiple pairs of nasal cannulas of different sizes allow different patients to choose the appropriate nasal cannulas based on their own nasal structure.

[0013] The above-mentioned technical solution has the following advantages or beneficial effects: First, the size of the nasal cannula tip can be changed by the cuff, allowing the tip to fit well against the nasal cavity wall, preventing the tip from repeatedly shaking with the patient's breathing and thus irritating the nasal cavity and causing bleeding; second, the size of the nasal cannula tip can be changed by inflating or deflating the cuff, thus making it suitable for different patients' nostril sizes and having good versatility; third, the outer wall of the nasal oxygen cannula is covered with a sponge layer, and the oxygen at the inlet end is humidified by a humidification bottle, thereby keeping the patient's nasal cavity moist and reducing nosebleeds. At the same time, the moisture in the oxygen can be absorbed by the sponge layer, keeping the sponge layer moist overall; finally, the oxygen supply hose is designed as a ring structure, so that even if one side of the hose is compressed or bent, causing oxygen supply blockage, the other side of the hose can still continuously supply oxygen.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the nasal oxygen inhalation tube of this utility model.

[0016] Figure 2 for Figure 1 A magnified view of a portion of region "A".

[0017] The components include: 1. Oxygen supply hose; 2. Air inlet; 3. Nasal cannula; 4. Air outlet; 5. Air bag; 6. Regulating air tube; 7. Pressure bulb; 8. Sponge layer; 9. Humidification bottle; 9.1. Air outlet connector; 9.2. Air inlet connector; 10. Air release valve; 11. First connecting hose; 12. Second connecting hose. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0019] A nasal oxygen inhalation tube according to an embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

[0020] This utility model provides a nasal oxygen inhalation tube, such as Figure 1 and Figure 2As shown, it includes an oxygen supply hose 1, an air inlet 2 for connecting to an external oxygen supply device and a nasal tube 3 for insertion into the patient's nasal cavity. The rear end of the nasal tube 3 is connected to the oxygen supply hose, and the front end of the nasal tube 3 has an air outlet 4. An annular air bag 5 is provided inside the nasal tube 3. A regulating trachea 6 is provided inside the oxygen supply hose 1 near the nasal tube 3. The outer diameter of the regulating trachea 6 is smaller than the inner diameter of the oxygen supply hose 1. The proximal end of the regulating trachea 6 is connected to the air bag 5, and the distal end of the regulating trachea 6 extends out of the oxygen supply hose 1 and is connected to a pressure bulb 7. In this embodiment, the air inlet 2 is connected to the oxygen supply pipeline arranged on the wall in the ward or to the output end of a portable oxygen cylinder or oxygen pump. Oxygen is continuously delivered to the oxygen supply hose 1 through the air inlet 2. The rear end of the nasal tube 3 is integrated with the oxygen supply hose 1. The front end of the nasal tube 3 extends into the patient's nostril. By pressing the pressure bulb 7, air can be continuously delivered into the regulating trachea 6, thereby causing the air bag 5 to inflate. Since the air bag 5 is annular, the front end of the nasal tube 3 bulges outward radially and finally fits against the inner wall of the patient's nasal cavity, thus fixing the nasal tube 3. At this time, the oxygen in the oxygen supply hose 1 can be delivered into the patient's nasal cavity through the channel in the middle of the air bag 5 and the air outlet 4 at the front end of the nasal tube 3. At the same time, the outer wall of the front end of the nasal tube 3 is inflated by the air bag 5 and fits against the patient's nasal cavity, reducing the stimulation of the patient's nasal cavity caused by the shaking of the front end of the nasal tube 3 and reducing the problem of nasal bleeding. It should be understood that the length of the nasal tube 3 is adapted to the depth of the patient's nasal cavity, so that the front end of the nasal tube 3 can be inserted into the patient's nostril. The specific length of the nasal tube 3 can be obtained through a limited number of trials, which will not be elaborated here.

[0021] In the above embodiment, since the front end of the nasal tube 3 can be supported by the air bag 5, the air outlet 4 can always remain open. Therefore, the material of the nasal tube 3 can be a relatively soft medical plastic, which further avoids irritation of the nasal cavity by the front end of the nasal tube 3 and reduces nasal bleeding. The choice of medical plastic can be existing conventional medical engineering plastics, which are conventional materials. Therefore, the materials of medical plastics will not be described in detail in this embodiment.

[0022] The pressure balloon 7 in the above embodiments, also known as a pressure balloon, is a commercially available product that is routinely used in clinical practice.

[0023] In a preferred embodiment of the above, the front end of the nasal tube 3 has a hollow spherical structure, and the airbag 5 is located inside the front end of the spherical structure of the nasal tube 3 and is arranged around the air outlet 4.

[0024] In a preferred embodiment of the above, the outer wall of the nasal oxygen cannula is covered with a sponge layer 8, and a portion of the sponge layer 8 extends to the location of the air outlet 4.

[0025] Furthermore, the oxygen supply hose 1 has an air inlet 2 equipped with a humidification bottle 9 for humidifying the oxygen inside the hose. Specifically, the air inlet 2 is connected to a first connecting hose 11, which is connected to an air outlet connector 9.1 on the humidification bottle 9. The humidification bottle 9 is equipped with an air inlet connector 9.2. An external oxygen supply device is connected to the air inlet connector 9.2 through a second connecting hose 12. The humidification bottle 9 contains physiological saline. The air inlet connector 9.2 is located at the interface of the humidification bottle 9, which is submerged below the surface of the physiological saline solution, and above the surface of the physiological saline solution. Thus, the oxygen supplied from the air inlet connector 9.2 is humidified by the physiological saline solution and then sent into the oxygen supply hose 1 through the air outlet connector 9.1.

[0026] In a preferred embodiment as described above, the oxygen supply hose 1 has a ring-shaped structure. For example... Figure 1 As shown, the nasal cannula 3 and the air inlet 2 are positioned far apart on the oxygen supply hose 1. The oxygen supply hose 1 employs a ring-shaped structure, creating two airflow channels between the air inlet 2 and the nasal cannula 3. When one airflow channel is blocked or compressed, reducing the inner diameter of the tube, oxygen from the outlet 2 can be delivered to the nasal cannula 3 from the other side, ensuring smooth oxygen supply. Furthermore, this ring-shaped oxygen supply hose 1 can be placed around the patient's mouth, with both sides secured to the patient's cheeks with medical tape, thus providing excellent fixation and preventing the nasal cannula 3 from detaching from the patient's nasal cavity due to pulling forces at the air inlet 2. This is especially beneficial for weakened patients with heart failure or respiratory failure, preventing oxygen deprivation caused by accidental detachment of the nasal cannula 3.

[0027] Based on the preferred embodiment described above, the portion of the regulating air tube 6 exposed outside the oxygen supply hose 1 is provided with a venting valve 10 for reducing the pressure inside the regulating air tube 6. This venting valve 10 is a commercially available product, and its specific structure will not be described in detail.

[0028] Based on the preferred embodiment described above, the nasal cannulas 3 are arranged in pairs, with each pair comprising two nasal cannulas 3 spaced apart from each other. The spacing between the two nasal cannulas 3 in the same pair can be set according to the spacing between the two nostrils of an adult, and the specific data for this spacing follows the spacing value between the two nasal cannulas 3 on existing conventional disposable oxygen tubing.

[0029] Furthermore, the oxygen supply hose 1 is provided with multiple pairs of nasal cannulas 3, each pair of nasal cannulas 3 including two nasal cannulas 3 spaced apart. Different pairs of nasal cannulas 3 can be distinguished according to different people's nostrils. For example, two pairs of nasal cannulas 3 can be provided to distinguish between adults and children. The first pair of nasal cannulas 3 for children has two shorter nasal cannulas 3 with smaller diameters and smaller gaps between them, making it suitable for children. The second pair of nasal cannulas 3 has two longer nasal cannulas 3 with larger diameters and larger gaps between them, making it suitable for adults. The selection of the length, diameter, and gap size of the nasal cannulas 3 can be obtained through a limited number of experiments. Therefore, the specific values ​​of the above parameters will not be elaborated in this embodiment.

[0030] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0031] For those skilled in the art, various changes and modifications will undoubtedly be apparent after reading the above description. Therefore, the appended claims should be considered as covering all changes and modifications that encompass the true intent and scope of this utility model. Any and all equivalent scope and content within the scope of the claims should be considered as still falling within the intent and scope of this utility model.

Claims

1. A nasal oxygen inhalation tube, comprising an oxygen supply hose (1), an air inlet (2) connected to an external oxygen supply device and a nasal plug (3) for insertion into a patient's nasal cavity, wherein the rear end of the nasal plug (3) is connected to the oxygen supply hose and the front end of the nasal plug (3) has an air outlet (4), characterized in that: The nasal cannula (3) is provided with an annular airbag (5), and the oxygen supply hose (1) is provided with a regulating air tube (6) near the nasal cannula (3). The outer diameter of the regulating air tube (6) is smaller than the inner diameter of the oxygen supply hose (1). The proximal end of the regulating air tube (6) is connected to the airbag (5), and the distal end of the regulating air tube (6) extends out to the outside of the oxygen supply hose (1) and is connected to the pressurization bulb (7).

2. The nasal oxygen cannula of claim 1, wherein: The front end of the nasal plug tube (3) has a hollow spherical structure, and the airbag (5) is located inside the front end of the spherical structure of the nasal plug tube (3) and is arranged around the air outlet (4).

3. The nasal oxygen cannula of claim 2, wherein: The outer wall of the nasal plug tube (3) is covered with a sponge layer (8), and part of the sponge layer (8) extends to the location of the air outlet (4).

4. The nasal oxygen cannula of claim 3, wherein: The oxygen supply hose (1) is provided with a humidification bottle (9) for humidifying the oxygen in the hose at the air inlet end (2).

5. The nasal oxygen cannula of any of claims 1-4, wherein: The oxygen supply hose (1) has a ring structure.

6. The nasal oxygen cannula of claim 1, wherein: The portion of the regulating trachea (6) exposed outside the oxygen supply hose (1) is provided with a venting valve (10) for reducing the pressure inside the regulating trachea (6).

7. The nasal oxygen cannula of claim 1, wherein: The nasal tubes (3) are arranged in pairs, and a pair of nasal tubes (3) includes two nasal tubes (3) arranged at intervals between each other.

8. The nasal oxygen cannula of claim 7, wherein: The oxygen supply hose (1) is provided with multiple pairs of nasal plugs (3), and any pair of nasal plugs (3) includes two nasal plugs (3) with gaps between them.

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