Nasal tampon catheter assembly with sealing structure

By designing a multi-seal structure and a stable fixation method for the nasal and oral masks in the nasal cannula assembly, the problems of poor sealing and unstable fixation of traditional nasal cannulas are solved, achieving effective sealing and stable gas delivery, reducing the risk of cross-infection, and improving the safety and stability of treatment.

CN224441854UActive Publication Date: 2026-07-03GENERAL HOSPITAL OF THE NORTHERN WAR ZONE OF THE CHINESE PEOPLES LIBERATION ARMY

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GENERAL HOSPITAL OF THE NORTHERN WAR ZONE OF THE CHINESE PEOPLES LIBERATION ARMY
Filing Date
2025-01-24
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Traditional nasal cannulas lack an effective sealing structure, which makes it easy for patients' exhaled air to leak, increasing the risk of cross-infection. They are also not stable and affect the treatment effect.

Method used

A nasal cannula assembly with a sealing structure was designed, including a nasal mask and an oral mask. The nasal mask contains a nasal cannula and is fitted with a gasket. Sealing pads are installed on the inner walls of the sides and top. It is fixed by a head strap and buckles. The nasal mask has a three-layer structure to enhance sealing and stability.

Benefits of technology

It effectively prevents gas leakage, reduces the risk of cross-infection, ensures the nasal catheter is firmly fixed in the patient's head, and improves the safety and stability of treatment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a nasal tube tool technical field, concretely is a kind of nasal tube assembly with sealing structure, including air inlet pipe, the front of air inlet pipe is equipped with nose cover, the bottom of air inlet pipe is equipped with mouth cover, the back of air inlet pipe is equipped with air inlet connector, air inlet connector is connected with gas delivery pipe away from the one end of air inlet pipe, the inside of nose cover is provided with two nose cannula, one end of two nose cannula is connected with air inlet pipe inside, and the outer wall of nose cannula is equipped with gasket.The nasal tube assembly with sealing structure in it, by setting up nose cannula in nose cover inside, and gasket is equipped on the outer wall of nose cannula, and side sealing gasket and top sealing gasket are respectively installed in the inner wall of both sides and top of nose cover, multiple sealing structure is formed.This design effectively prevents the gas exhaled by patient from leaking to surrounding environment, greatly reduces the risk of cross infection, and is especially suitable for the treatment of infectious disease patient.
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Description

Technical Field

[0001] This utility model relates to the field of nasal plug tool technology, and more specifically, to a nasal plug catheter assembly with a sealing structure. Background Technology

[0002] In the medical field, nasal cannulas are a common medical device widely used to provide patients with oxygen or other therapeutic gases. However, traditional nasal cannulas designs have some significant shortcomings in specific applications, especially in the treatment of patients with infectious diseases.

[0003] Traditional nasal cannulas often lack an effective sealing structure, which makes it easy for the patient's exhaled air (which may contain pathogens such as viruses and bacteria) to leak into the surrounding environment during use, increasing the risk of cross-infection. Especially during infectious disease outbreaks such as influenza and COVID-19, this leakage may become an important route of disease transmission.

[0004] Furthermore, traditional nasal cannulas are often not securely fixed and are prone to falling off during use due to patient movement or activity, affecting treatment effectiveness. Additionally, if the material of the part of the nasal cannulas that contacts the patient's nose is poor or poorly designed, it may cause discomfort, or even skin irritation or injury. Utility Model Content

[0005] The purpose of this invention is to provide a nasal cannula assembly with a sealing structure to solve the problem mentioned in the background art that traditional nasal cannulas usually lack an effective sealing structure, which leads to the easy leakage of the patient's exhaled air (which may contain pathogens such as viruses and bacteria) into the surrounding environment during use, increasing the risk of cross-infection.

[0006] To achieve the above objectives, this utility model provides a nasal cannula assembly with a sealing structure, including an air inlet tube, a nasal mask mounted on the front of the air inlet tube, a mouth mask mounted on the bottom of the air inlet tube, an air inlet connector mounted on the back of the air inlet tube, an air supply tube connected to the end of the air inlet connector away from the air inlet tube, two nasal cannulas disposed inside the nasal mask, one end of each of the two nasal cannulas communicating with the inside of the air inlet tube, and gaskets fitted on the outer wall of the nasal cannulas.

[0007] Preferably, a head strap is connected to each of the two outer sides of the mouth mask, and the other ends of the two head straps are locked together by a buckle.

[0008] Preferably, the buckle has a strap passage inside, one end of the buckle is connected to the end of a head strap, the other end of the head strap passes through the strap passage, and the other head strap is locked and fixed by a locking pin. The rod of the locking pin is threaded, and the threaded end of the locking pin extends through the side wall of the buckle into the strap passage and can abut against the other head strap.

[0009] Preferably, ear straps are installed on both sides of the mouth mask.

[0010] Preferably, the outer wall of the washer has an outwardly convex arc surface structure.

[0011] Preferably, the inner walls on both sides of the nose mask are fitted with side sealing gaskets, and the inner wall at the top of the nose mask is fitted with a top sealing gasket.

[0012] Preferably, both the side sealing gasket and the top sealing gasket are made of silicone material.

[0013] Preferably, the nose mask is adapted to the shape of the user's nose. Both the nose mask and the mouth mask are divided into three layers: the inner layer is a skin-friendly material layer, which is made of ordinary sanitary gauze or non-woven fabric; the middle layer is an isolation and filtration layer, which is made of ultra-fine polypropylene fiber meltblown material; and the outer layer is an antibacterial layer, which is made of non-woven fabric or polypropylene meltblown material.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This nasal cannula assembly with a sealed structure features two nasal cannulas inside the nasal mask. These cannulas are inserted into the nasal cavity, and gaskets are fitted onto the outer walls of the cannulas. Side sealing gaskets and a top sealing gasket are installed on the inner walls of the sides and top of the nasal mask, respectively, creating a multi-layered sealing structure. This design effectively prevents the patient's exhaled air from leaking into the surrounding environment, significantly reducing the risk of cross-infection, and is particularly suitable for the treatment of patients with infectious diseases.

[0016] The head straps connecting the two sides of the mouth mask, and the locking design between the ends of the two head straps, ensure a secure fixation of the nasal cannula assembly on the patient's head. Even when the patient moves or is active, the nasal cannula assembly remains stable and does not affect the treatment effect. In addition, the ear loops on both sides of the mouth mask provide extra support, further enhancing the stability of the assembly. Attached Figure Description

[0017] Figure 1 This is one of the overall structural schematic diagrams of this utility model;

[0018] Figure 2 This is the second schematic diagram of the overall structure of this utility model;

[0019] Figure 3 This is one of the schematic diagrams of the internal structure of the nose cover in this utility model;

[0020] Figure 4 This is the second schematic diagram of the internal structure of the nose cover in this utility model;

[0021] Figure 5 This is a schematic diagram of the buckle structure in this utility model;

[0022] The meanings of the labels in the diagram are as follows:

[0023] 1. Head strap; 11. Buckle; 12. Strap passage; 13. Locking pin; 2. Air inlet tube; 3. Nose mask; 31. Nose cannula; 32. Side sealing gasket; 33. Top sealing gasket; 34. Washer; 4. Mouth mask; 41. Ear loops; 5. Air inlet connector; 6. Air delivery tube. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This utility model provides a nasal cannula assembly with a sealing structure, such as Figures 1-5 As shown, it includes an air intake pipe 2, a nose mask 3 installed on the front of the air intake pipe 2, a mouth mask 4 installed at the bottom of the air intake pipe 2, an air intake connector 5 installed on the back of the air intake pipe 2, and an air supply pipe 6 connected to the end of the air intake connector 5 away from the air intake pipe 2. Two nasal cannulas 31 are provided inside the nose mask 3, and one end of each of the two nasal cannulas 31 is connected to the inside of the air intake pipe 2. A gasket 34 is fitted on the outer wall of the nasal cannulas 31.

[0026] In use, the carefully designed structural layout achieves efficient and safe gas delivery. Specifically, the air inlet pipe 2 serves as the main channel for gas flow, with a nasal mask 3 mounted on the front and a mouth mask 4 mounted on the bottom, covering the patient's nose and mouth respectively to ensure accurate gas delivery. The connection between the air inlet connector 5 and the gas delivery pipe 6 allows for convenient docking with an external gas source, enabling gas to smoothly enter the air inlet pipe 2.

[0027] In particular, the two nasal cannulas 31 inside the nasal mask 3 are not only connected to the air inlet tube 2 to ensure smooth airflow, but the gaskets 34 on their outer walls also effectively enhance the seal between the nasal mask 3 and the patient's nose, preventing gas leakage and improving the safety and effectiveness of the treatment.

[0028] In this embodiment, a head strap 1 is connected to each of the two outer sides of the mouth mask 4, and the other ends of the two head straps 1 are locked together by a buckle 11. The design of the head straps 1 and the buckle 11 ensures a stable fixation of the mouth mask 4 to the patient's head. The locking method of the buckle 11 is simple and easy to implement, ensuring that the mouth mask 4 is not easily dislodged during use, thus improving the stability and reliability of the treatment.

[0029] Specifically, the buckle 11 has a strap-through channel 12 inside, with both ends of the channel connected to the outer sides of the buckle 11. One end of the buckle 11 is connected to the end of a head strap 1, and another head strap 1 passes through the strap-through channel 12 and is locked in place by a locking pin 13. The locking pin 13 has threads on its shaft, and its threaded end extends through the side wall of the buckle 11 into the strap-through channel 12 and abuts against the other head strap 1. The other head strap 1 is inserted through the top hole of the strap-through channel 12 and then out through the side hole. Tightening the locking pin 13 then presses the locking pin against the outer wall of the strap-through channel 12. The design of the strap-through channel 12 and the locking pin 13 inside the buckle 11 makes the head strap 1 more securely and reliably fixed. The threaded connection enhances the connection strength between the locking pin 13 and the buckle 11, ensuring a tight fit of the mouth mask 4 on the patient's head and further improving the stability of the treatment.

[0030] Furthermore, ear loops 41 are installed on both sides of the mouth mask 4. The ear loops 41 are designed to provide additional fixation support for the mouth mask 4. By hanging the ear loops 41 on the patient's ears, the stability of the mouth mask 4 can be further ensured, preventing it from falling off when the patient moves or moves.

[0031] Furthermore, the outer wall of the gasket 34 has an outwardly convex arcuate structure. This outwardly convex arcuate design enhances the contact area and seal between the gasket 34 and the patient's nose. This design effectively prevents gas leakage, improving the safety and effectiveness of the treatment.

[0032] Furthermore, side sealing gaskets 32 are installed on both inner walls of the nasal mask 3, and a top sealing gasket 33 is installed on the top inner wall of the nasal mask 3. The design of the side sealing gaskets 32 and the top sealing gasket 33 further enhances the seal between the nasal mask 3 and the patient's nose. This multi-seal structure can effectively prevent gas leakage and ensure the accuracy and safety of the treatment.

[0033] Furthermore, both the side sealing gasket 32 ​​and the top sealing gasket 33 are made of silicone. The top sealing gasket 33, made of silicone, is soft and elastic. This material choice improves patient comfort and reduces the pressure of the nasal mask 3 on the patient's nose.

[0034] Furthermore, the nasal mask 3 is designed to fit the shape of the user's nose. Both the nasal mask 3 and the oral mask 4 consist of three layers: an inner skin-friendly material layer made of ordinary sanitary gauze or non-woven fabric; a middle isolation and filtration layer made of ultra-fine polypropylene fiber meltblown material; and an outer antibacterial layer made of non-woven fabric or polypropylene meltblown material. This three-layer design of the nasal mask 3 and oral mask 4 ensures good contact and comfort with the patient's nose and mouth while also providing isolation, filtration, and antibacterial functions. This design effectively prevents the spread of pathogens through the nasal cannula assembly, improving the safety and hygiene of the treatment.

[0035] In use, the nasal cannula assembly with a sealed structure of this invention first connects an external gas source to the inlet connector 5 via the gas delivery pipe 6. Gas flows into the inlet connector 5 through the gas delivery pipe 6 and then into the inlet pipe 2. The inlet pipe 2 serves as the main channel for gas flow, delivering gas to the nasal mask 3 and the oral mask 4. The nasal cannula 31 inside the nasal mask 3 is connected to the inlet pipe 2 and is inserted into the nasal cavity to ensure smooth gas flow into the patient's nasal cavity. The oral mask 4 covers the patient's mouth, allowing gas to be delivered to the patient's oral cavity as needed.

[0036] The nasal cannula 31 inside the nasal mask 3 is fitted with a gasket 34 on its outer wall. The outer wall of the gasket 34 has an outwardly convex arc-shaped structure, which enhances the contact area and sealing between the nasal mask 3 and the patient's nasal cavity, preventing gas leakage. Side sealing gaskets 32 are installed on the inner walls of both sides of the nasal mask 3, and a top sealing gasket 33 is installed on the inner wall of the top, further enhancing the sealing between the nasal mask 3 and the patient's nose. The side sealing gaskets 32 and the top sealing gasket 33 are made of silicone material, which is soft and elastic, improving patient comfort and reducing the pressure of the nasal mask 3 on the patient's nose.

[0037] A head strap 1 is attached to each of the two outer sides of the mouth mask 4. The ends of the head straps 1 are locked together by buckles 11, ensuring a secure fit of the mouth mask 4 to the patient's head. By passing the end of another head strap 1 through the strap channel 12 and then tightening the locking pin 13 against the other head strap 1, the binding length of the other head strap 1 is fixed, ensuring a tight fit of the mouth mask 4 to the patient's head. Ear loops 41 are also installed on both sides of the mouth mask 4, providing additional support and preventing it from falling off when the patient moves or is active.

[0038] Both the nasal mask 3 and the oral mask 4 feature a three-layer structure: the inner layer is a skin-friendly material made of ordinary sanitary gauze or non-woven fabric, ensuring good contact with the patient's nose and mouth for enhanced comfort; the middle layer is an isolation and filtration layer made of ultra-fine polypropylene fiber meltblown material, providing isolation and filtration; and the outer layer is an antibacterial layer made of non-woven fabric or polypropylene meltblown material, offering antibacterial properties. This three-layer design ensures good contact and comfort with the patient's nose and mouth while also providing isolation, filtration, and antibacterial functions, effectively preventing the spread of pathogens through the nasal cannula assembly.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A nasal tampon catheter assembly with a sealing structure, comprising an air inlet tube (2), characterized in that: A nose mask (3) is installed on the front of the air intake pipe (2), a mouth mask (4) is installed at the bottom of the air intake pipe (2), an air intake connector (5) is installed on the back of the air intake pipe (2), and an air supply pipe (6) is connected to the end of the air intake connector (5) away from the air intake pipe (2). Two nasal cannulas (31) are provided inside the nose mask (3), and one end of each of the two nasal cannulas (31) is connected to the inside of the air intake pipe (2). A gasket (34) is fitted on the outer wall of the nasal cannulas (31).

2. The nasal cannula assembly with a seal structure of claim 1, wherein: The mouth mask (4) has a head strap (1) connected to the outside of each of its two sides, and the other ends of the two head straps (1) are locked together by buckles (11).

3. The nasal cannula assembly with a seal structure of claim 2, wherein: The buckle (11) has a strap passage (12) inside. One end of the buckle (11) is connected to the end of a head strap (1). Another head strap (1) passes through the strap passage (12) and is locked and fixed by a locking pin (13). The rod of the locking pin (13) is threaded. The threaded end of the locking pin (13) extends through the side wall of the buckle (11) into the strap passage (12) and can abut against the other head strap (1).

4. The nasal cannula assembly with a seal structure of claim 1, wherein: The mouth mask (4) is equipped with ear straps (41) on both sides.

5. The nasal cannula assembly with a seal structure of claim 1, wherein: The outer wall of the washer (34) is an outwardly convex arc surface structure.

6. The nasal cannula assembly with a seal structure of claim 1, wherein: The nose mask (3) has side sealing gaskets (32) installed on both inner walls and top sealing gaskets (33) installed on the top inner wall.

7. The nasal cannula assembly with a seal structure of claim 6, wherein: Both the side sealing gasket (32) and the top sealing gasket (33) are made of silicone material.

8. The nasal cannula assembly with a seal structure of claim 1, wherein: The nose mask (3) is adapted to the shape of the user's nose. Both the nose mask (3) and the mouth mask (4) are divided into three layers: the inner layer is a skin-friendly material layer, which is made of ordinary sanitary gauze or non-woven fabric; the middle layer is an isolation and filtration layer, which is made of ultra-fine polypropylene fiber meltblown material layer; and the outer layer is an antibacterial layer, which is made of non-woven fabric or polypropylene meltblown material layer.