High-flow nasal oxygen cannula

Abstract

The utility model provides a high-flow nasal oxygen cannula which comprises a fixedly connected communicating pipeline and an outer connecting pipe head at the outer end of the communicating pipeline, the other end of the communicating pipeline is fixedly connected with a communicating pipe head, the outer end of the communicating pipe head is provided with a nasal pipe in a matched mode, and the front face of the nasal pipe is connected with an insertion pipe in an outward protruding mode. Limiting belt structures are fixedly connected to the bottoms of the communicating pipelines, a nasal mask structure is arranged on the front face of the nasal tube in a matched mode, the cannula is communicated and connected with the nasal mask structure at the same time, and every two communicating pipelines form a group and are arranged in a matched mode. The effect of hermetically connecting and communicating a pipeline and a nasal tube is achieved through the first communicating part and the second communicating part, the effect of facilitating the length and limiting of the whole limiting belt structure is achieved through the elastic belt, the effect of fixing the whole limiting belt structure is achieved through the adjusting belt, and meanwhile the elastic belt and the adjusting belt are movably connected; and during use, the wearing can be adjusted according to the wearing condition.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, and more specifically to a high-flow nasal oxygen tube. Background Art

[0002] Nasal high-flow therapy is an established form of non-invasive respiratory support that can produce a flow of 60 to 80 L / min. It has become the standard of care for patients with acute respiratory failure and has been widely used in COVID-19 patients. During NHF treatment, the airflow delivered through the nasal oxygen cannula dilutes and sweeps the exhaled gas in the upper airway, reduces the rebreathing of waste gas in the respiratory tract, and produces a certain positive airway pressure to improve gas exchange.

[0003] When using existing nasal oxygen cannulas, in order to ensure high oxygen flow, the smoothness of the inner wall of the oxygen cannulas is usually used to determine the dynamic change of the respiratory flow rate, to ensure the gas flow rate and reduce the flow resistance. At the same time, in order to ensure the stability of the nasal oxygen cannulas, it is necessary to ensure the wearing stability when the patients wear them. When the existing nasal oxygen cannulas are worn by patients, they are either fixed by sticking tape to the nose and the mandibular position of the face, or by wrapping the patient's head with a strap. These two fixing methods are not beautiful and it is easy to damage the skin when the tape is torn off. The operation is cumbersome and delays work time.

[0004] At the same time, the nose tip parts of existing nasal oxygen tubes are mostly straight-through pipes and two sets of protruding nasal tubes on the surface, which need to be inserted into the patient's nasal cavity when in use. The problems are that it is difficult to ensure the amount of oxygen absorption and there are safety hazards, and the comfort level is low, and it is difficult to ensure stability.

[0005] Therefore, the utility model proposes a high-flow nasal oxygen cannula. Utility Model Content

[0006] The utility model aims to solve the technical problems raised by the above-mentioned background technology and provides a high-flow nasal oxygen cannula, which can quickly complete the wearing operation of the entire device when in use, has a simple structure and is easy to operate; and can effectively ensure the oxygen flow and stability of use when in use.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-flow nasal oxygen cannula, comprising a fixedly connected connecting pipe and an externally connected pipe head at its outer end, the other end of the connecting pipe is also fixedly connected to the connecting pipe head, the outer end of the connecting pipe head is matched with a nasal tube, the front of the nasal tube is convexly connected with a cannula, the bottom of the connecting pipe is fixedly connected with a limiting band structure, the front of the nasal tube is matched with a nasal mask structure, the cannula is also connected to the nasal mask structure, and two connecting pipes are matched as a group.

[0008] A further preferred solution: a first connecting part is provided at the inner end of the connecting pipe, and a second connecting part is provided at the outer end of the nasal tube, the first connecting part and the second connecting part are plug-connected, and a plurality of groups of silicone sealing rings are protrudingly provided on the surface of the first connecting part, and a plurality of groups of annular limiting grooves are provided on the inner side of the second connecting part corresponding to the plurality of groups of silicone sealing rings on the surface of the first connecting part.

[0009] A further preferred solution is that a group of annular raised platforms are also provided at the outer end of the connecting pipe head, and the annular raised platforms are located at one side of the first connecting portion.

[0010] A further preferred solution: the limiting belt structure includes an elastic belt fixedly connected to the connecting pipe and an adjustment belt movably connected to the elastic belt. The outer end of the elastic belt is fixedly connected to a position below one end of the connecting pipe. The whole is inclined inward and is set as a silicone elastic belt.

[0011] A further preferred solution is that the outer end of the adjustment belt is movably connected to the bottom end of the elastic belt through a group of plastic cylinders, and the adjustment belt is configured as a flat rubber belt, two of which form a group and are connected to each other through a magnetic buckle.

[0012] A further preferred embodiment: the nasal mask structure includes a nasal mask body arranged in a triangular shape and a cushion layer arranged along the inner surface thereof, the cushion layer is arranged as a silicone cushion layer, and also includes a lower cushion layer located at the lower inner side of the nasal mask body, and an oxygen passage cavity is arranged inside the nasal mask body.

[0013] A further preferred solution is that the oxygen passage cavity is arranged in an arc-shaped triangle inside the nasal mask body, and the bottom of the oxygen passage cavity is arranged to expand outward in an arc shape, and the bottom of the oxygen passage cavity is plug-connected to the cannula.

[0014] A further preferred solution is that the lower cushion layer is horizontally extended outward along the bottom of the nose mask body and is configured as a sponge cushion layer.

[0015] Beneficial effects:

[0016] 1. The first connecting part and the second connecting part achieve the effect of sealingly connecting the connecting pipe and the nasal tube.

[0017] 2. The elastic band is used to facilitate the length and position of the entire limiting band structure, and the adjusting band is used to fix the overall structure of the limiting band. At the same time, the elastic band and the adjusting band are movably connected, so they can be adjusted according to the wearing situation during use.

[0018] 3. The nasal mask body can fit the patient's nose to ensure the oxygen flow. The oxygen cavity with an outward arc at the bottom can ensure the concentration of oxygen and avoid oxygen dispersion during the oxygen flow. The cushion layer and the lower cushion layer can ensure the sealing of oxygen. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is an exploded view of the nose mask structure connection of the utility model;

[0021] Figure 3 For the utility model Figure 2 A magnified view of the structure in the middle.

[0022] Figure 1-3 In: 1. connecting pipe; 2. connecting tube head; 3. nasal tube; 4. first connecting part; 5. second connecting part; 6. nasal mask structure; 7. external connecting tube head; 8. limiting belt structure; 9. elastic belt; 10. adjusting belt; 11. nasal mask body; 12. cushion layer; 13. oxygen passage cavity; 14. lower cushion layer; 15. intubation tube. DETAILED DESCRIPTION

[0023] The following will be combined with the attached embodiment of the utility model Figure 1-Figure 3 , clearly and completely describe the technical solutions in the embodiments of the utility model.

[0024] See also Figure 1-3 In the embodiment of the utility model, a high-flow nasal oxygen cannula includes a fixedly connected connecting pipe 1 and an external connecting pipe head 7 at the outer end position thereof, the other end of the connecting pipe 1 is fixedly connected to the connecting pipe head 2 at the same time, the outer end of the connecting pipe head 2 is matched with a nasal tube 3, the front convex outer side of the nasal tube 3 is connected with an insert pipe 15, the bottom of the connecting pipe 1 is fixedly connected with a limited band structure 8, the front side of the nasal tube 3 is matched with a nasal mask structure 6, the insert pipe 15 is connected to the nasal mask structure 6 at the same time, and the two connecting pipes 1 are matched as a group. When using the device, the external connecting pipe head 7 is connected to the external oxygen supply setting, and after the nasal tube 3 is oxygenated, the oxygen enters the nasal mask body 11 and is concentrated at the arc-shaped outward expansion position below the oxygen passage cavity 13, and the patient's nostril position is also located below the oxygen passage cavity 13, which can effectively ensure the patient's oxygen absorption. When the patient wears the nasal mask structure 6, the cushion layer 12 fits the outer surface of the nose to form a fit, and the lower cushion layer 14 is located below the patient's nose to support the nose, thereby ensuring the wearing stability of the nasal mask body 11.

[0025] In the embodiment of the utility model, a first connecting portion 4 is provided at the inner end of the connecting pipe 1, and a second connecting portion 5 is provided at the outer end of the nasal tube 3. The first connecting portion 4 and the second connecting portion 5 are plug-inly arranged, and a plurality of groups of silicone sealing rings are protrudingly provided on the surface of the first connecting portion 4, and a plurality of groups of annular limiting grooves are provided on the inner side of the second connecting portion 5 corresponding to the plurality of groups of silicone sealing rings on the surface of the first connecting portion 4. A group of ring-mounted protrusions are also provided at the outer end of the connecting pipe 2, and the ring-mounted protrusions are located on one side of the first connecting portion 4. The effect of sealingly connecting the connecting pipe 1 and the nasal tube 3 is achieved through the first connecting portion 4 and the second connecting portion 5.

[0026] When making the connection, the first connecting part 4 and the second connecting part 5 are sleeved together, and multiple groups of silicone sealing rings on the surface of the first connecting part 4 and multiple groups of annular limiting grooves on the inner side of the second connecting part 5 are engaged, so that a seal is formed between the connecting pipe 1 and the nasal tube 3, thereby ensuring the sealing effect of the connection between the connecting pipe 1 and the nasal tube 3. At the same time, the user can wrap tape around the connecting pipe 1 and the nasal tube 3 to fix them. When wrapping the tape, the tape can be wrapped along a group of ring-mounted protrusions provided at the outer end of the connecting pipe head 2 toward the position of the nasal tube 3.

[0027] The limiting belt structure 8 includes an elastic belt 9 fixedly connected to the connecting pipe 1 and an adjusting belt 10 movably connected to the elastic belt 9. The outer end of the elastic belt 9 is fixedly connected to the end of the connecting pipe 1 below the end of the connecting pipe 1 and close to the end of the nasal tube 3. The whole is tilted inward and is set as a silicone elastic belt. The outer end of the adjusting belt 10 is movably connected to the bottom end of the elastic belt 9 through a group of plastic cylinders. The adjusting belt 10 is set as a flat rubber belt, two of which are in a group and connected to each other by magnetic buckles. The elastic belt 9 is used to achieve the effect of facilitating the length and limiting of the entire limiting belt structure 8. The adjusting belt 10 is used to fix the overall effect of the limiting belt structure 8. At the same time, the elastic belt 9 and the adjusting belt 10 are movably connected, and the wearing can be adjusted according to the wearing situation when in use.

[0028] When wearing the device, after the nasal tube 3 is connected to the patient's nasal cavity for oxygen ventilation, the user pulls the tilted elastic band 9 to make the adjustment band 10 go around the position below the patient's cheekbone to the position behind the ear and be fixed at the back of the patient's neck. The connection and removal are completed through the magnetic buckles between the adjustment bands 10.

[0029] The nasal mask structure 6 includes a nasal mask body 11 arranged in a triangular shape and a cushion layer 12 arranged along the inner surface thereof, the cushion layer 12 is arranged as a silicone cushion layer, and also includes a lower cushion layer 14 located at the lower inner side of the nasal mask body 11. An oxygen passage chamber 13 is arranged inside the nasal mask body 11, and the oxygen passage chamber 13 is arranged in an arc-shaped triangular shape inside the nasal mask body 11, and the bottom of the oxygen passage chamber 13 is arranged to expand outward in an arc shape close to the lower cushion layer 14, and at the same time, the bottom of the oxygen passage chamber 13 is plugged and connected with the cannula 15, and the lower cushion layer 14 is arranged to extend outward horizontally along the bottom of the nasal mask body 11, and is arranged to be a sponge cushion layer. The nasal mask body 11 is used to fit the patient's nose to ensure the oxygen flow, and the oxygen passage chamber 13 with the bottom expanding outward in an arc shape is used to ensure the concentration of oxygen flow, so as to avoid oxygen dispersion during the oxygen flow process, and the cushion layer 12 and the lower cushion layer 14 are used to ensure the sealing of the oxygen flow.

Claims

1. A high flow nasal oxygen cannula, characterized in that: The invention comprises a fixedly connected communicating pipe (1) and an externally connected pipe head (7) at the outer end thereof; the other end of the communicating pipe (1) is fixedly connected to the communicating pipe head (2); the outer end of the communicating pipe head (2) is matched with a nasal tube (3); the front of the nasal tube (3) is convexly connected with an inserting tube (15); the bottom of the communicating pipe (1) is fixedly connected to a limiting belt structure (8); the front of the nasal tube (3) is matched with a nasal mask structure (6); the inserting tube (15) is connected to the nasal mask structure (6); and two communicating pipes (1) are matched as a group.

2. A high flow nasal oxygen cannula according to claim 1, characterized in that: The inner end of the communication pipe (1) is provided with a first communication portion (4), and the outer end of the nasal tube (3) is provided with a second communication portion (5), the first communication portion (4) and the second communication portion (5) are plug-connected, and a plurality of groups of silicone sealing rings are protrudingly provided on the surface of the first communication portion (4), and a plurality of groups of annular limiting grooves are provided on the inner side of the second communication portion (5) corresponding to the plurality of groups of silicone sealing rings on the surface of the first communication portion (4).

3. A high flow nasal oxygen cannula according to claim 1, characterized in that: The outer end of the connecting pipe head (2) is also provided with a group of annular raised platforms, and the annular raised platforms are located on one side of the first connecting portion (4).

4. A high flow nasal oxygen cannula according to claim 1, characterized in that: The limiting belt structure (8) comprises an elastic belt (9) fixedly connected to the connecting pipe (1) and an adjusting belt (10) movably connected to the elastic belt (9); the outer end of the elastic belt (9) is fixedly connected to a position below one end of the connecting pipe (1) (the end close to the nasal tube (3)); the elastic belt (9) is arranged to be inclined inward as a whole and is arranged to be a silicone elastic belt.

5. A high flow nasal oxygen cannula according to claim 4, characterized in that: The outer end of the adjustment belt (10) is movably connected to the bottom end of the elastic belt (9) through a group of plastic cylinders. The adjustment belt (10) is configured as a flat rubber belt, two of which form a group and are connected to each other through a magnetic buckle.

6. A high flow nasal oxygen cannula according to claim 1, characterized in that: The nasal mask structure (6) comprises a nasal mask body (11) arranged in a triangular shape and a cushion layer (12) arranged along the inner surface thereof, wherein the cushion layer (12) is arranged as a silicone cushion layer, and further comprises a lower cushion layer (14) located at a lower position inside the nasal mask body (11), and an oxygen passage cavity (13) is arranged inside the nasal mask body (11).

7. A high flow nasal oxygen cannula according to claim 6, characterized in that: The oxygen passage cavity (13) is arranged in an arc-shaped triangle inside the nasal mask body (11), and the bottom of the oxygen passage cavity (13) is arranged to expand outward in an arc shape (close to the lower cushion layer (14)), and the bottom of the oxygen passage cavity (13) is plug-connected with the cannula (15).

8. The high-flow nasal oxygen cannula according to claim 6, characterized in that: The lower cushion layer (14) is horizontally extended outward along the bottom of the nose mask body (11) and is configured as a sponge cushion layer.

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