Protective device for preventing high flow nasal oxygen cannula from wearing out the nasal cavity

Abstract

The utility model discloses a protection device that prevents high flow nasal oxygen tube from wearing out nasal cavity, including connecting portion, sleeve and wing, connecting portion includes the upper arc shape edge and the lower arc shape edge who set up oppositely and left side and right side, and sleeve includes left leather cover and right leather cover of C shape structure, and the opening direction of C shape structure is perpendicular to the plane of connecting portion, and the outer wall of left leather cover is sleeved with left infiltration cloth, and the outer wall of right leather cover is sleeved with right infiltration cloth, and left leather cover and right leather cover are in the inside of two ends of its length direction respectively, and are glued left card strip group and right card strip group, and left card strip group and right card strip group all include the card of strip shape, and wing includes left wing and right wing, and the lower bottom edge of left wing is located close to left leather cover one side, and the lower bottom edge of right wing is located close to right leather cover one side, and the second bevel of left wing is integrative connection with left side, and the second bevel of right wing is integrative connection with right side, the utility model discloses to solve the problem of nasal dryness and cracking or damage caused by long time use high flow nasal oxygen tube.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and more specifically, to a protective device for preventing high-flow nasal oxygen tubes from abrading the nasal cavity. Background Technology

[0002] High-flow nasal cannulas are key devices used for high-flow nasal oxygen therapy. They deliver a mixture of air and oxygen at a specific concentration, along with a high-flow rate of warm, humidified gas, to the patient through a non-sealed tube. The gas flow rate of high-flow nasal cannulas is typically 8-80 L / min. The materials used in these cannulas generally need to be strong enough to withstand the high flow rate. Since high-flow nasal cannulas are for single-use use, the recommended usage period is generally 7 days. Therefore, they also possess a certain degree of durability to withstand wear and tear from long-term use. However, this durability also means that high-flow nasal cannulas can cause skin abrasion. During use, high-flow nasal cannulas can dry out the nasal mucosa, making it more susceptible to rupture. Long-term high-concentration oxygen inhalation can also lead to vasodilation and increased permeability, further increasing the risk of bleeding.

[0003] Chinese Patent Application Document 1 (Application No.: 2022223403878, Application Date: 2022.09.02) discloses a nasal plug fixing device for a high-flow oxygen therapy device, including a nasal plug cylinder 1', a plurality of arc-shaped spring plates 2' are arranged at equal angles at the lower end of the nasal plug cylinder 1', a movable cylinder 3' is arranged inside the nasal plug cylinder 1', a threaded part 4' is arranged in the middle of the movable cylinder 3', and the movable cylinder 3' is threadedly connected to the inner wall of the nasal plug cylinder 1' through the threaded part 4'. An inclined plate 5' with a smaller upper end and a larger lower end is arranged on the inner wall of the arc-shaped spring plates 2', and the lower outer wall of the movable cylinder 3' abuts against the upper outer wall of the inclined plate 5'. The above solution uses compression to slowly expand the arc-shaped spring plate 2' outwards to support the nasal cavity wall, but this provides limited comfort to the patient's nasal cavity and is very likely to cause skin abrasion to the patient's nasal cavity, nostrils and the skin around the nostrils; in addition, the above-mentioned nasal plug 1' is not additionally fixed to the patient's nose and is easy to fall off during the patient's movement; at the same time, the above-mentioned moving tube 3' is cumbersome to adjust, does not have a wetting function, and is prone to bleeding inside the patient's nasal cavity.

[0004] Chinese Patent Application Document 2 (Application No.: 2021225814288, Application Date: 2021.10.25) discloses a nasal oxygen tube fixator, including a nasal oxygen tube and a fixator for fixing the nasal oxygen tube. The fixator includes an adhesive part and a fixing part disposed on the adhesive part. The side of the adhesive part that is in contact with the face is adhesive. The fixing part is provided with at least one set of engaging parts integrally formed therewith on the side away from the adhesive part. Each set of engaging parts includes two oppositely arranged arc-shaped connecting parts, and the arc-shaped connecting parts are elastically deformable. The above solution only considers the fixation of the nasal oxygen tube in the lateral direction and cannot fix the longitudinal expansion and contraction of the nasal oxygen tube. Furthermore, considering only the fixation of the nasal oxygen tube, it is still impossible to avoid the nasal oxygen tube causing skin abrasion to the patient's nasal cavity, nostrils and the outside of the nostrils during actual use.

[0005] Chinese Patent Application Document 3 (Application No.: 202022461587X, Application Date: 2020.10.29) discloses a novel ophthalmic nasal oxygen tube, including a nasal plug tube, which is fixedly connected to an oxygen inlet tube and an oxygen inhalation branch tube. The oxygen inhalation branch tube is provided with an adjustment ring, a nasal fixation patch, and a flexible tube. The nasal fixation patch has a branch tube fixing area. There are two nasal plug tubes, which are fixedly installed on both sides of the middle of the oxygen inlet tube. The top ends of the two oxygen inhalation branch tubes are fixedly connected to both ends of the oxygen inlet tube, respectively. The branch tube fixing areas on both sides of the nasal fixation patch are respectively fitted onto the oxygen inhalation branch tubes fixedly connected to both ends of the oxygen inlet tube. In the above-mentioned solution, the nasal plug tube is inserted into the patient's nose, which can easily cause wear and discomfort to the patient's nose. Furthermore, in the existing implementation, the fixation patch also causes wear and tear on the patient's upper lip and the area between the upper lip and the nose (such as the philtrum area), especially when the high-flow nasal oxygen tube needs to be worn for 7 days.

[0006] Chinese Patent Document 1, Chinese Patent Document 2, and Chinese Patent Document 3 have not solved the problem that high-flow nasal oxygen tubes easily abrade the inside of the patient's nose. Therefore, providing a protective device made of soft, wettable material that can prevent high-flow nasal oxygen tubes from abrading the patient's nose is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0007] In view of this, the present invention provides a protective device to prevent high-flow nasal oxygen tubes from rubbing against the nasal cavity, thereby solving the problem of nasal dryness or damage caused by prolonged use of high-flow nasal oxygen tubes.

[0008] This application provides a protective device to prevent high-flow nasal oxygen cannula from rubbing against the nasal cavity, including a connector, a sleeve, and a protective wing;

[0009] The connecting part includes an upper arc-shaped edge, a lower arc-shaped edge, a left side, and a right side. The upper arc-shaped edge and the lower arc-shaped edge are arranged opposite each other, and the left side and the right side are arranged parallel to each other. The upper arc-shaped edge, the lower arc-shaped edge, the left side, and the right side form a quadrilateral. The length of the upper arc-shaped edge is greater than the length of the lower arc-shaped edge. The middle part of the upper arc-shaped edge is recessed downwards to form an arc-shaped notch, and the lower arc-shaped edge is recessed upwards as a whole.

[0010] The sleeve includes a left sheath and a right sheath, both of which are C-shaped structures. The opening of the C-shaped structure is perpendicular to the plane of the connecting part, pointing from the left side to the right side. The left and right sheaths are fixedly connected to the beginning and end of the upper arc-shaped edge, pointing from the upper arc-shaped edge to the lower arc-shaped edge. The top view projections of the left and right sheaths are tangent to the top view projection of the arc-shaped notch. The outer wall of the left sheath is fitted with a left impregnated cloth, and the outer wall of the right sheath is fitted with a right impregnated cloth. Inside the left sheath at both ends along its length, a left retaining strip assembly extending along its length is glued. Inside the right sheath at both ends along its length, a right retaining strip assembly extending along its length is glued. Both the left and right retaining strip assemblies include strip-shaped cards.

[0011] The protective wings include a mirror-symmetrical left protective wing and a right protective wing. Both the left and right protective wings include a bottom edge, a first oblique edge, an upper bottom edge, and a second oblique edge. The bottom edge and the upper bottom edge are arranged parallel to each other, and the first oblique edge and the second oblique edge are arranged opposite each other. The bottom edge, the first oblique edge, the upper bottom edge, and the second oblique edge form a trapezoid. The bottom edge of the left protective wing is located near the left leather cover, and the bottom edge of the right protective wing is located near the right leather cover. The second oblique edge of the left protective wing is integrated with the left side edge, and the second oblique edge of the right protective wing is integrated with the right side edge.

[0012] Compared with the prior art, the protective device for preventing high-flow nasal oxygen cannulas from chafing the nasal cavity provided by this utility model achieves at least the following beneficial effects:

[0013] First, the protective device provided by this invention to prevent high-flow nasal oxygen tubes from abrading the nasal cavity can avoid contact between the nasal oxygen tube and the patient's skin, thereby preventing friction and wear on the patient's nose. Secondly, this invention provides an arc-shaped connecting part to prevent friction between the connecting part and the outer periphery of the patient's nose. Thirdly, this invention provides a left and right protective wing to prevent direct contact and friction between the nasal oxygen tube and the outer periphery of the patient's nose. Finally, this invention provides a left and right leather sleeve to prevent direct contact and friction between the nasal oxygen tube and the inner periphery of the patient's nose.

[0014] Secondly, the protective device provided by this invention to prevent high-flow nasal oxygen tubes from chafing the nasal cavity can moisten the patient's nose, thereby preventing the patient's nose from drying and cracking due to the use of high-flow nasal oxygen tubes. Firstly, this invention provides left and right moistening cloths to give the patient's nasal cavity more elastic movement. Secondly, the left and right moistening cloths can moisten the nasal cavity, thereby preventing the high-flow nasal oxygen tube from moistening the dry nasal cavity during continuous blowing, preventing cracking, and effectively preventing damage caused by dryness inside.

[0015] Third, the protective device provided by this utility model to prevent high-flow nasal oxygen tubes from puncturing the nasal cavity can fix the high-flow nasal oxygen tube, thereby preventing the use of high-flow nasal oxygen tubes from causing puncture injuries to the patient's nasal cavity; firstly, the left sheath and left locking strip assembly, as well as the right sheath and right locking strip assembly provided by this utility model can elastically fix the high-flow nasal oxygen tube, providing stable protection for the inside of the patient's nose, preventing the high-flow nasal oxygen tube from slipping off, and avoiding puncture injuries to the patient's nasal cavity due to unstable fixation.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all the technical effects described above at the same time.

[0017] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0019] Figure 1 This is a schematic diagram of a nasal plug fixation device for a high-flow oxygen therapy device provided in Chinese patent application document 1;

[0020] Figure 2 This is a schematic diagram of the structure of a protective device provided by this utility model to prevent high-flow nasal oxygen tubes from rubbing against the nasal cavity;

[0021] Figure 3 This is an assembly structure diagram of the connecting part and the anti-detachment block provided by this utility model;

[0022] Figure 4 yes Figure 2 Sectional view A-A' in the middle;

[0023] Figure 5 This is an assembly structure diagram of the left wing and left guide block provided by this utility model;

[0024] Figure 6 This is an assembly structure diagram of the right wing and right guide block provided by this utility model;

[0025] Figure 7 This is a schematic diagram of the protective device provided by this utility model to prevent high-flow nasal oxygen cannula from rubbing against the nasal cavity;

[0026] Figure 8 This is a cross-sectional view of the left protective wing, left guide block, and lip protector provided by this utility model;

[0027] Figure 9 This is a schematic diagram of the structure of another protective device provided by this utility model to prevent high-flow nasal oxygen tubes from rubbing against the nasal cavity;

[0028] Figure 10 This is an assembly structure diagram of the left leather case, right leather case, left protective wing, right protective wing, left patch and right patch provided by this utility model. Detailed Implementation

[0029] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0030] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0031] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0032] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0034] Example 1

[0035] Reference Figures 2-7 As shown, Figure 2 This is a schematic diagram of the structure of a protective device provided by this utility model to prevent high-flow nasal oxygen tubes from rubbing against the nasal cavity; Figure 3 This is an assembly structure diagram of the connecting part and the anti-detachment block provided by this utility model; Figure 4 yes Figure 2 Sectional view A-A' in the middle; Figure 5 This is an assembly structure diagram of the left wing and left guide block provided by this utility model; Figure 6 This is an assembly structure diagram of the right wing and right guide block provided by this utility model; Figure 7 This is a schematic diagram illustrating the use of the protective device provided by this utility model to prevent high-flow nasal oxygen tubes from rubbing against the nasal cavity. The protective device for preventing high-flow nasal oxygen tubes from rubbing against the nasal cavity provided in this embodiment includes a connecting part 3, a sleeve 1, and a protective wing 2;

[0036] The connecting part 3 includes an upper arc-shaped edge 301, a lower arc-shaped edge 302, a left side 303, and a right side 304. The upper arc-shaped edge 301 and the lower arc-shaped edge 302 are arranged opposite each other, and the left side 303 and the right side 304 are arranged parallel to each other. The upper arc-shaped edge 301, the lower arc-shaped edge 302, the left side 303, and the right side 304 form a quadrilateral. The length of the upper arc-shaped edge 301 is greater than the length of the lower arc-shaped edge 302. The middle part of the upper arc-shaped edge 301 is recessed into the lower arc-shaped edge 302 to form an arc-shaped notch 305. The lower arc-shaped edge 302 is recessed into the upper arc-shaped edge 301 as a whole.

[0037] The sleeve 1 includes a left sleeve 11 and a right sleeve 12. The left sleeve 11 and the right sleeve 12 are both C-shaped structures 01. The opening direction of the C-shaped structure 01 is perpendicular to the plane of the connecting part 3, pointing from the left side 303 to the right side 304. The left sleeve 11 and the right sleeve 12 are respectively fixedly connected to the head and tail ends of the upper arc-shaped side 301, pointing from the upper arc-shaped side 301 to the lower arc-shaped side 302. The top view projections of the left sleeve 11 and the right sleeve 12 are tangent to the top view projection of the arc-shaped notch. The outer wall of the left sleeve 11 is fitted with a left impregnated cloth 111, and the outer wall of the right sleeve 12 is fitted with a right impregnated cloth. The left sleeve 11 has a left card strip group 112 extending along its length direction glued inside its two ends in the length direction. The right sleeve 12 has a right card strip group extending along its length direction glued inside its two ends in the length direction. Both the left card strip group 112 and the right card strip group include strip-shaped cards.

[0038] The protective wing 2 includes a mirror-symmetrical left protective wing 21 and a right protective wing 22. Both the left protective wing 21 and the right protective wing 22 include an upper bottom edge 203, a first inclined edge 202, a lower bottom edge 201, and a second inclined edge 204. The upper bottom edge 203 and the lower bottom edge 201 are arranged parallel to each other, and the first inclined edge 202 and the second inclined edge 204 are arranged opposite each other. The upper bottom edge 203, the first inclined edge 202, the lower bottom edge 201, and the second inclined edge 204 form a trapezoid. The upper bottom edge 203 of the left protective wing 21 is located on the side closer to the left leather sleeve 11, and the upper bottom edge 203 of the right protective wing 22 is located on the side closer to the right leather sleeve 12. The second inclined edge 204 of the left protective wing 21 is integrally connected to the left side edge 303, and the second inclined edge 204 of the right protective wing 22 is integrally connected to the right side edge 304.

[0039] Specifically, continue to refer to Figure 2 and Figure 3As shown, the connecting part 3 is a quadrilateral, including an upper arc-shaped side 301 and a lower arc-shaped side 302 arranged opposite each other, and a left side 303 and a right side 304 arranged opposite each other; the upper arc-shaped side 301, the lower arc-shaped side 302, the left side 303, and the right side 304 form a closed quadrilateral. The length of the upper arc-shaped side 301 is greater than the length of the lower arc-shaped side 302, the lengths of the left side 303 and the right side 304 are both less than the length of the upper arc-shaped side 301, and the lengths of the left side 303 and the right side 304 are both greater than the length of the lower arc-shaped side 302. The length settings of the upper arc-shaped side 301, the lower arc-shaped side 302, the left side 303, and the right side 304 are more conducive to adapting the overall shape of the connecting part 3 to the proportions of the patient's philtrum structure; the left side 303 and the right side 304 form an inverted V-shape; the left wing 2... The second oblique side 204 of 1 is provided on the left side 303 of the connecting part. The left side 303 is integrally connected with the second oblique side 204 of the left guard 21 along its length extension direction. The length of the left side 303 is equal to the length of the second oblique side 204 of the left guard 21. The right side 304 of the right guard 22 is provided on the right side 304 of the connecting part. The right side 304 is integrally connected with the second oblique side 204 of the right guard 22 along its length extension direction. The length of the right side 304 is equal to the length of the second oblique side 204 of the right guard 22.

[0040] The middle part of the upper arc-shaped edge 301 is recessed downwards to the lower arc-shaped edge 302 to form an arc-shaped notch 305, while the lower arc-shaped edge 302 is recessed upwards to the upper arc-shaped edge 301. Along the length extension direction of the connecting part 3, the upper arc-shaped edge 301 includes an upper left horizontal edge, an upper middle arc-shaped edge, and an upper right horizontal edge; wherein, the upper left horizontal edge and the upper right horizontal edge are both straight edges, the upper left horizontal edge and the upper right horizontal edge have the same length, the length of the upper left horizontal edge along the length extension direction of the connecting part 3 is not greater than half the length of the left leather sleeve 11 perpendicular to the length extension direction of the connecting part 3, and the upper left horizontal edge is connected to one end of the left leather sleeve 11 along its length extension direction; the length of the upper right horizontal edge along the length extension direction of the connecting part 3 is not greater than half the length of the right leather sleeve 12 perpendicular to the length extension direction of the connecting part 3, and the upper right horizontal edge is connected to one end of the right leather sleeve 12 along its length extension direction; the upper middle arc-shaped edge is an arc-shaped edge with its concave direction facing the lower arc-shaped edge 302, forming an arc-shaped notch 305, the upper middle arc-shaped edge is used to stay away from the intersection of the patient's nose and philtrum to prevent friction.

[0041] Along the length of the connecting part 3, the lower arc-shaped edge 302 is an arc-shaped edge with a concave direction facing the upper middle arc-shaped edge. One end of the lower arc-shaped edge 302 is connected to a corner of the left protective wing 21 away from the upper left horizontal edge, and the other end of the lower arc-shaped edge 302 is connected to a corner of the right protective wing 22 away from the upper right horizontal edge. The lower arc-shaped edge 302 is used to keep away from the patient's upper lip to prevent friction.

[0042] Continue to refer to Figures 2-4As shown, the sleeve 1 includes a left sleeve 11 and a right sleeve 12. Both the left sleeve 11 and the right sleeve 12 are made of addition-cured silicone. Both the left sleeve 11 and the right sleeve 12 are rectangular pieces with rounded corners. The length of both the left sleeve 11 and the right sleeve 12 is not greater than the length of the connecting part 3. The width of both the left sleeve 11 and the right sleeve 12 is not greater than 15mm. The length extension direction of both the left sleeve 11 and the right sleeve 12 is along the length extension direction of the connecting part 3. The left sleeve 11 and the right sleeve 12 are parallel to each other. Along the length extension direction of the connecting part 3, the side view projection of the left sleeve 11 and the side view projection of the right sleeve 12 coincide. Along the direction from the upper arc edge 301 to the lower arc edge 302, the top view projection of the left sleeve 11 and the right sleeve 12 are tangent to the top view projection of the arc notch 305.

[0043] Both the left sleeve 11 and the right sleeve 12 are bent C-shaped structures 01, meaning that the cross-sectional shape of the left sleeve 11 and the right sleeve 12 along the length extension direction of the connecting part 3 is C-shaped. The opening direction of the left sleeve 11 and the right sleeve 12 is perpendicular to the quadrilateral formed by the upper arc-shaped edge 301, the lower arc-shaped edge 302, the left side edge 303, and the right side edge 304; the opening direction of the left sleeve 11 is the same as the opening direction of the right sleeve 12. One end of the left sleeve 11 perpendicular to the length extension direction of the connecting part 3 is fixedly connected to the upper arc-shaped edge 301 of the connecting part 3, specifically at the end of the upper left horizontal edge near the left side edge 303; along the circumferential direction of the C-shaped structure 01, at least 1 / 4 of the length of the left sleeve 11 is integrally connected to the upper left horizontal edge.

[0044] The opening of the C-shaped structure 01 is perpendicular to the plane of the connecting part 3; the opening of the C-shaped structure 01 of the right sleeve 12 is perpendicular to the opening of the C-shaped structure 01 of the left sleeve 11. One end of the right sleeve 12 perpendicular to the length extension direction of the connecting part 3 is fixedly connected to the upper arc-shaped edge 301 of the connecting part 3, specifically at the end of the upper right horizontal edge near the right side edge 304; along the circumferential direction of the C-shaped structure 01, at least 1 / 4 of the length of the right sleeve 12 is connected to the upper right horizontal edge.

[0045] Continue to refer to Figures 2-4 As shown, the shape of the left impregnating cloth 111 is the same as that of the left leather sleeve 11, both being rectangular pieces with rounded corners. The left impregnating cloth 111 completely wraps around the outer wall of the left leather sleeve 11 away from the central axis of its C-shaped structure 01 opening. The shape of the right impregnating cloth is the same as that of the right leather sleeve 12, both being rectangular pieces with rounded corners. The right impregnating cloth completely wraps around the outer wall of the right leather sleeve 12 away from the central axis of its C-shaped structure 01 opening.

[0046] Optionally, the materials of the left impregnated fabric 111 and the right impregnated fabric can be non-woven fabric (such as medical non-woven fabric) or spunlace non-woven fabric; spunlace non-woven fabric can specifically be polypropylene fiber, which has the advantages of being non-irritating, non-allergenic, and fluffy to human skin; medical non-woven fabric has the advantages of being porous, breathable, easy to keep the fabric surface dry, easy to wash, and has good water absorption to impregnate and prevent dry cracking near the right and left nostrils.

[0047] Along the length of the C-shaped structure 01, the left sleeve 11 has left retaining strips 112 arranged on both sides of the groove wall. Specifically, these strips are located inside the left sleeve 11 along its thickness extension direction, meaning the left retaining strips 112 are held by the elastic force of the silicone material within the left sleeve 11 itself. The length extension direction of the left retaining strips 112 is the same as the length extension direction of the opening of the C-shaped structure 01 of the left sleeve 11. Along the length of the C-shaped structure 01, the right sleeve 12 has right retaining strips 112 arranged on both sides of the groove wall. Specifically, these strips are located inside the right sleeve 12 along its thickness extension direction, meaning the right retaining strips are held by the elastic force of the silicone material within the right sleeve 12 itself. The length extension direction of the right retaining strips is the same as the length extension direction of the opening of the C-shaped structure 01 of the right sleeve 12. Both the right card strip group and the left card strip group 112 include cards. The cards are rectangular pieces with an arc-shaped bend, and the arc-shaped bend direction is towards the central axis of the C-shaped structure 01 of the left leather sleeve 11 or the right leather sleeve 12. Furthermore, the cards are made of metal and their thickness is no more than 1 mm.

[0048] Continue to refer to Figures 2-5As shown, the protective wing 2 includes a left protective wing 21 and a right protective wing 22. The left protective wing 21 and the right protective wing 22 have the same shape, structure and size, and are both trapezoidal planes. The trapezoidal planes of the left protective wing 21 and the right protective wing 22 are parallel to each other and parallel to the plane of the connecting part 3. The material of the left protective wing 21 and the right protective wing 22 is addition-cured silicone. Both the left wing 21 and the right wing 22 include a lower bottom edge 201, a first oblique edge 202, an upper bottom edge 203, and a second oblique edge 204. The second oblique edge 204 of the left wing 21 is closer to the left side edge 303 and further away from the left side edge 303. The second oblique edge 204 of the left wing 21 is integrally connected to the left side edge 303 of the connecting part 3 along its length extension direction. The length of the second oblique edge 204 of the left wing 21 is less than the length of the lower bottom edge 201 or the upper bottom edge 203 of the left wing 21. The upper bottom edge 203 of the left wing 21 is located closer to the left leather sleeve 11 and the upper left horizontal edge. The upper bottom edge 203 of the left wing 21 forms an angle greater than 90° with the upper left horizontal edge. The lower edge 201 of the left wing 21 is longer than its upper edge 203, and the width of the left wing 21 is the same as the width of the left side edge 303 of the connecting part 3. The extension direction of the lower edge 201 of the left wing 21 is the same as the extension direction of the lower arc edge 302 away from the right side edge 304, and the length of the lower edge 201 of the left wing 21 is greater than the length of the lower arc edge 302. The left wing 21 is located on the right side of the philtrum of the patient's upper lip, and is used to prevent the nasal oxygen tube 6 from rubbing against the right side of the philtrum of the patient's upper lip. Furthermore, the connection between the upper edge 203 of the left wing 21 and the connecting part 3, the connection between the upper edge 203 of the left wing 21 and its second inclined edge 204, and the connection between the second inclined edge 204 of the left wing 21 and its lower edge 201 are all rounded to create a smooth transition surface and prevent abrasion to the patient's skin.

[0049] The right wing 22 also includes an upper bottom edge 203, a lower bottom edge 201, a second oblique edge 204, and a first oblique edge 202. The second oblique edge 204 of the right wing 22 is close to the right side edge 304 of the connecting part 3, and the first oblique edge 202 of the right wing 22 is away from the right side edge 304 of the connecting part 3. The second oblique edge 204 of the right wing 22 is integrally connected to the right side edge 304 of the connecting part 3 along its length extension direction. The length of the second oblique edge 204 of the right wing 22 is less than the length of the upper bottom edge 203 or the lower bottom edge 201 of the right wing 22. The upper bottom edge 203 of the right wing 22 is close to the right leather sleeve 12 and The right wing 22 is positioned on the upper right horizontal side. The upper bottom edge 203 of the right wing 22 forms an angle greater than 90° with the upper right horizontal side. Due to the shape constraints of the left side 303 and right side 304 of the connecting part 3, the length of the lower bottom edge 201 of the right wing 22 is greater than the length of its upper bottom edge 203. The width of the right wing 22 is the same as or equal to the width of the right side 304 of the connecting part 3. The length of the lower bottom edge 201 of the right wing 22 extends in the same direction as the length of the lower arc-shaped edge 302 away from the left wing 21. The length of the lower bottom edge 201 of the right wing 22 is greater than the length of the lower arc-shaped edge 302. The right wing 22 is positioned on the left side of the philtrum area of ​​the patient's upper lip to prevent the nasal cannula 6 from rubbing against the left side of the philtrum area of ​​the patient's upper lip. Furthermore, the connection between the upper bottom edge 203 of the right wing 22 and the connecting part 3, the connection between the upper bottom edge 203 of the right wing 22 and its second oblique edge 204, and the connection between the second oblique edge 204 of the right wing 22 and its lower bottom edge 201 are all rounded to create a smooth transition surface and prevent abrasion to the patient's skin.

[0050] Continue to refer to Figures 2-5 As shown, the left leather sleeve 11, right leather sleeve 12, left protective wing 21, right protective wing 22 and connecting part 3 are made of addition-cure silicone with a Shore hardness of less than 25.

[0051] Addition-cure silicone does not produce byproducts during the curing process, and the product is non-toxic and odorless. It can be made from vinyl silicone resin, hydrogen-containing crosslinking agents, platinum catalysts, etc. Addition-cure silicone with a Shore hardness of less than 25 is very soft, close to the feel of a patient's skin, and has good tear strength. It can maintain good performance, is not easily damaged, and has a long service life.

[0052] In a specific application process, continue to refer to Figures 2-7 As shown, the protective device provided in this embodiment to prevent high-flow nasal oxygen cannulas from rupturing the nasal cavity can be used for various respiratory diseases and related conditions, such as acute hypoxic respiratory failure and postoperative oxygen therapy; its specific operating steps are as follows:

[0053] First, the nasal plug portion of the nasal oxygen cannula 6 is made parallel to the connecting portion 3. The two oxygen outlet ends of the nasal plug portion are respectively engaged in the C-shaped structure 01 of the left leather sleeve 11 and the C-shaped structure 01 of the right leather sleeve 12. The length extension direction of the two oxygen outlet ends of the nasal plug portion is the same as the length extension direction of the C-shaped structure 01.

[0054] Next, insert the left skin cover 11 and its oxygen outlet end into the patient's right nostril, and insert the right skin cover 12 and its oxygen outlet end into the patient's left nostril, so that the connecting part 3 fits against both ends of the patient, so that the left wing 21 and the right wing 22 extend along the patient's upper lip like a mustache, from the philtrum of the patient to both ends.

[0055] Then, fix the oxygen tubing of the nasal oxygen tube 6 as usual; this embodiment will not go into too much detail about this step.

[0056] Finally, a cotton swab can be used to wet the left soaking cloth 111 outside the left leather case 11 and the right soaking cloth outside the right leather case 12.

[0057] Compared with the prior art, the protective device for preventing high-flow nasal oxygen cannulas from rubbing against the nasal cavity provided in this embodiment achieves at least the following beneficial effects:

[0058] First, the protective device provided in this embodiment to prevent high-flow nasal oxygen tubes from abrading the nasal cavity can avoid contact between the nasal oxygen tube 6 and the patient's skin, thereby preventing the nasal oxygen tube 6 from rubbing and abrading the patient's nose. First, this embodiment provides an arc-shaped connecting part 3 to prevent the connecting part 3 from rubbing against the outer periphery of the patient's nose. Second, this embodiment provides a left protective wing 21 and a right protective wing 22 to prevent the nasal oxygen tube 6 from directly contacting and rubbing against the outer periphery of the patient's nose. Finally, this embodiment provides a left leather sleeve 11 and a right leather sleeve 12 to prevent the nasal oxygen tube 6 from directly contacting and rubbing against the inner periphery of the patient's nose.

[0059] Secondly, the protective device provided in this embodiment to prevent high-flow nasal oxygen tubes from chafing the nasal cavity can moisten the patient's nose, thereby preventing the patient's nose from drying and cracking due to the use of high-flow nasal oxygen tubes. Firstly, this embodiment provides left and right moistening cloths 111 to give the patient's nasal cavity more elastic movement. Secondly, the left and right moistening cloths 111 and 111 can moisten the nasal cavity, thereby preventing the high-flow nasal oxygen tube from moistening the dry nasal cavity during continuous blowing, preventing cracking, and effectively preventing damage caused by dryness inside.

[0060] Third, the protective device provided in this embodiment to prevent high-flow nasal oxygen tube from puncturing the nasal cavity can fix the high-flow nasal oxygen tube, thereby preventing the use of the high-flow nasal oxygen tube from causing puncture injury to the patient's nasal cavity; firstly, the left sheath 11 and left locking strip group 112, as well as the right sheath 12 and right locking strip group provided in this embodiment can elastically fix the high-flow nasal oxygen tube, providing stable protection for the inside of the patient's nose, preventing the high-flow nasal oxygen tube from slipping off, and avoiding puncture injury to the patient's nasal cavity due to unstable fixation.

[0061] In an alternative embodiment, continue to refer to Figures 2-5 As shown, an L-shaped left guide block 41 is glued to the side of the lower bottom edge 201 of the left wing 21 near the opening of the C-shaped structure 01. The length extension direction of the left guide block 41 is the same as the length extension direction of the lower bottom edge 201 of the left wing 21. An L-shaped right guide block 42 is glued to the side of the lower bottom edge 201 of the right wing 22 near the opening of the C-shaped structure 01. The length extension direction of the right guide block 42 is the same as the length extension direction of the lower bottom edge 201 of the right wing 22.

[0062] Specifically, the left guide block 41 is an L-shaped elongated groove; the material of the left guide block 41 can be addition-cure silicone with a Shore hardness of not less than 20; the left guide block 41 is fixedly glued to the lower bottom edge 201 of the left guard 21, specifically glued to the side of the left guard 21 near the opening of the C-shaped structure 01; the length extension direction of the left guide block 41 is the same as the length extension direction of the lower bottom edge 201 of the left guard 21; the cross-section of the left guide block 41 perpendicular to its length extension direction is L-shaped, and the inner angle of the L-shaped bend of the left guide block 41 faces the upper bottom edge 203 of the left guard 211. Optionally, the cross-section of the left guide block 41 perpendicular to its length extension direction can also be a U-shape or a V-shape.

[0063] The right guide block 42 and the left guide block 41 have the same structure and are symmetrically arranged along the perpendicular bisector of the plane of the connecting part 3. The material of the right guide block 42 can be the same as that of the left guide block 41, which can be addition-cured silicone with a Shore hardness of not less than 20. The projections of the right guide block 42 and the left guide block 41 coincide along the length extension direction of the connecting part 3. The right guide block 42 is fixedly glued to the lower bottom edge 201 of the right wing 22, and the right guide block 42 is specifically glued to the side of the right wing 22 near the opening of the C-shaped structure 01. The length extension direction of the right guide block 42 is the same as the length extension direction of the lower bottom edge 201 of the right wing 22. The cross-section of the right guide block 42 perpendicular to its length extension direction is L-shaped, and the inner angle of the L-shaped bend of the right guide block 42 faces the upper bottom edge 203 of the right wing 22. Optionally, the cross-section of the right guide block 42 perpendicular to its length extension direction can also be U-shaped or V-shaped.

[0064] Using the above method, the left guide block 41 can be used to hook and hold the nasal oxygen tube 6 extending towards the patient's right cheek, allowing the nasal oxygen tube 6 to remain on the left protective wing 211 and preventing the nasal oxygen tube 6 from rubbing against the right side of the patient's upper lip (philtrum). Similarly, the right guide block 42 can be used to hook and hold the nasal oxygen tube 6 extending towards the patient's left cheek, allowing the nasal oxygen tube 6 to remain on the right protective wing 22 and preventing the nasal oxygen tube 6 from rubbing against the left side of the patient's upper lip (philtrum).

[0065] In an alternative embodiment, continue to refer to Figures 2-8 As shown, Figure 8 This is a cross-sectional view of the left protective wing, left guide block, and lip protector provided by this utility model; both the left guide block 41 and the right guide block 42 include a horizontal block 4H and a vertical block 4S connected to the horizontal block 4H. The horizontal block 4H and the vertical block 4S form an L-shaped structure, with the right angle of the L-shaped structure facing the upper bottom edge 203 and the upper arc edge 301.

[0066] Specifically, both the horizontal block 4H and the vertical block 4S are rectangular. One side of the horizontal block 4H along its length extension direction is perpendicularly connected to one side of the vertical block 4S along its length extension direction. The horizontal block 4H and the vertical block 4S are integrally set to form an L-shaped structure. Perpendicular to the length extension direction of the horizontal block 4H and the vertical block 4S, their cross-section is L-shaped. The side of the horizontal block 4H of the left guide block 41 away from its vertical block 4S is glued along the bottom edge 201 of the left guard wing 21 and close to the opening of the C-shaped structure 01. The side of the horizontal block 4H of the right guide block 42 away from its vertical block 4S is glued along the bottom edge 201 of the right guard wing 22 and close to the opening of the C-shaped structure 01.

[0067] With the above scheme, perpendicular to the plane of the left wing 21, the horizontal block 4H and vertical block 4S of the left guide block 41 can form a U-shaped groove with the plane of the left wing 21, which facilitates more stable fixation of the nasal oxygen tube 6 extending to the right side of the patient's face; the horizontal block 4H and vertical block 4S of the right guide block 42 can form a U-shaped groove with the plane of the right wing 22, which facilitates more stable fixation of the nasal oxygen tube 6 extending to the left side of the patient's face.

[0068] In an alternative embodiment, continue to refer to Figure 2 and Figure 3 As shown, an anti-detachment block 43 is provided in the middle of the lower arc-shaped edge 302. The cross-section of the anti-detachment block 43 perpendicular to its length extension direction is a U-shaped structure, and the opening of the U-shaped structure faces the upper arc-shaped edge 301. Along the thickness extension direction of the connecting part 3, the orthographic projection of the anti-detachment block 43 completely overlaps with the orthographic projection of the connecting part. The orthographic projection of the side of the anti-detachment block 43 away from the upper arc-shaped edge 301 is located within the orthographic projection of the lower arc-shaped edge 302.

[0069] Specifically, the anti-detachment block 43 is a U-shaped block, which is fixedly connected to the middle of the lower arc-shaped edge 302; the material of the anti-detachment block 43 can be addition-cured silicone with a Shore hardness of not less than 20; the length extension direction of the anti-detachment block 43 is the same as the length extension direction of the lower arc-shaped edge 302, the cross-section of the anti-detachment block 43 perpendicular to its length extension direction is U-shaped, and the opening of the U-shaped structure of the anti-detachment block 43 faces the upper arc-shaped edge 301. The U-shaped opening of the anti-detachment block 43 faces the same direction as the width extension of the connecting part 3. The outer side of the anti-detachment block 43 near the connecting part 3 is fixedly glued to the connecting part 3. The central axis of the glued side of the anti-detachment block 43 coincides with the vertical line of the lower arc-shaped edge 302. Along the thickness extension direction of the connecting part 3, the orthographic projection of the anti-detachment block 43 completely overlaps with the orthographic projection of the connecting part 3. The orthographic projection of the anti-detachment block 43 coincides within the orthographic projection of the connecting part 3. The orthographic projection of the side of the anti-detachment block 43 away from the upper arc-shaped edge 301 coincides within the orthographic projection of the lower arc-shaped edge 302.

[0070] Optionally, the cross-section of the anti-detachment block 43 perpendicular to its length extension direction can also be a C-shape or a V-shape.

[0071] Through the above solution, the anti-detachment block 43 can accurately fix the nasal oxygen tube 6 in the philtrum of the patient. Furthermore, the side of the anti-detachment block 43 near the connecting part 3 can raise the side of the connecting part 3 near the lower arc edge 302, further reducing the possibility of contact between the nasal oxygen tube 6 and the protruding part of the patient's philtrum, thereby preventing abrasion of the patient's skin.

[0072] In an alternative embodiment, continue to refer to Figure 2 , Figure 8 and Figure 9 As shown, Figure 9 This is a schematic diagram of the structure of another protective device provided by this utility model to prevent high-flow nasal oxygen tube from rubbing against the nasal cavity; a lip protector 44 is provided on the side of the vertical block 4S away from the horizontal block 4H, and the lip protector 44 is a rectangular piece.

[0073] Specifically, the lip balm 44 is a rectangular sheet, with the same length and width as the vertical block 4S. Along the thickness extension direction of the connecting part 3, the orthographic projection of the lip balm 44 coincides with the orthographic projection of the vertical block 4S. The lip balm 44 can be made of non-woven fabric. The lip balm 44 can be wetted and absorb moisture.

[0074] Through the above solution, during the use of this embodiment, the lip cloth 44 can be moistened. When the lip cloth 44 comes into contact with the patient's lips, it can moisten the surface of the patient's lips, thereby effectively preventing lip chapping caused by prolonged oxygen inhalation. The non-woven lip cloth 44 can effectively keep the lips moist for a long time. Even if the lip cloth 44 dries out during oxygen inhalation, it can be dripped with water again, thereby achieving long-term continuous use.

[0075] In an alternative embodiment, continue to refer to Figures 2-4 As shown, the card includes a first card 1121 and a second card 1122. There is a gap between the first card 1121 and the second card 1122 along the circumferential direction of the C-shaped structure 01. Both the first card 1121 and the second card 1122 are curved toward the central axis of the C-shaped structure 01.

[0076] Specifically, the card includes a first card 1121 and a second card 1122. The first card 1121 and the second card 1122 are glued to the interior of both ends of the left and right leather sleeves 11 and 12 along their length extension direction. The length extension direction of the first card 1121 and the second card 1122 is the same as the length extension direction of the C-shaped structure 01 of the left and right leather sleeves 11 and 122. The first card 1121 and the second card 1122 are symmetrical about the central axis of the C-shaped structure 01. There is a gap between the first card 1121 and the second card 1122 along the circumference of the C-shaped structure 01. Both the first card 1121 and the second card 1122 are rectangular pieces with an arc-shaped bend, and the arc-shaped bend direction of both the first card 1121 and the second card 1122 is towards the central axis of the C-shaped structure 01. Furthermore, both the first card 1121 and the second card 1122 are made of metal, and their thickness is no more than 1 mm.

[0077] Through the above scheme, the first card 1121 and the second card 1122 can enhance the elasticity of the opening of the C-shaped structure 01, thereby enabling the C-shaped structure 01 to more elastically engage the nasal oxygen tube 6, enhancing the fixation stability of the nasal oxygen tube 6, and preventing the nasal oxygen tube 6 from falling off or loosening and causing puncture injury to the patient's nasal cavity.

[0078] In an alternative embodiment, continue to refer to Figure 2 and Figure 4 As shown, the left impregnated cloth 111 is bonded to the outer wall of the left leather sleeve 11, and the right impregnated cloth is bonded to the outer wall of the right leather sleeve 12.

[0079] Specifically, the left leather sleeve 11 and the left impregnated cloth 111 are bonded and fixed together, and the right leather sleeve 12 and the right impregnated cloth are bonded and fixed together. The adhesive can be a medical adhesive, specifically a light-cured acrylic adhesive.

[0080] Medical adhesives are adhesives that have bonding functions, are non-toxic, harmless, and have good biochemical adaptability. Light-cured acrylic adhesives range from rigid to semi-rigid to flexible, and their cured material properties cover a wide range, with excellent biocompatibility and sterilization resistance.

[0081] The above method can effectively reduce the maximum diameter between the left skin sleeve 11 and the left soaking cloth 111, and between the right skin sleeve 12 and the right soaking cloth, making it easier to insert the left skin sleeve 11 and the left soaking cloth 111 into the patient's right nostril, and to insert the right skin sleeve 12 and the right soaking cloth into the patient's left nostril.

[0082] Example 2

[0083] This embodiment is an extension of embodiment 1, and will continue to be referred to... Figures 2-10 As shown, Figure 10 This is an assembly structure diagram of the left and right patches and the protective device for preventing high-flow nasal oxygen tubes from rubbing against the nasal cavity provided by this utility model; the first inclined side 202 of the left wing 21 is connected to the left patch 51, and the first inclined side 202 of the right wing 22 is connected to the right patch 52. Both the left patch 51 and the right patch 52 are T-shaped structures. The side of the left patch 51 away from the left wing 21 and the side of the right patch 52 away from the right wing 22 are respectively provided with non-adhesive.

[0084] Specifically, the left patch 51 and the right patch 52 are the same size, and both the left patch 51 and the right patch 52 are T-shaped.

[0085] One end of the left patch 51 is integrally connected to the first inclined edge 202 of the left wing 21 away from the connecting part 3. A non-adhesive layer is provided on the side of the left patch 51 away from the first inclined edge 202 of the left wing 21 and closer to the patient's face. The area of ​​the non-adhesive layer is no larger than half the area of ​​the left patch 51. One end of the right patch 52 is integrally connected to the first inclined edge 202 of the right wing 22 away from the connecting part 3. A non-adhesive layer is provided on the side of the right patch 52 away from the first inclined edge 202 of the right wing 22 and closer to the patient's face. The area of ​​the non-adhesive layer is no larger than half the area of ​​the right patch 52.

[0086] Through the above-described scheme, the left patch 51 allows the left side of the left protective wing 21 and the connecting part 3 to be more securely fixed to the patient's face, providing additional fixing force on the right side of the patient's face in addition to the pressure force of the nasal tube 6 to prevent the high-flow nasal oxygen tube from rubbing against the nasal cavity, as provided in this embodiment; the right patch 52 allows the right side of the right protective wing 22 and the connecting part 3 to be more securely fixed to the patient's face, providing additional fixing force on the left side of the patient's face in addition to the pressure force of the nasal tube 6 to prevent the high-flow nasal oxygen tube from rubbing against the nasal cavity, as provided in this embodiment; thereby, the protective device for preventing the high-flow nasal oxygen tube from rubbing against the nasal cavity provided in this embodiment can be further secured, preventing punctures caused by displacement of the nasal oxygen tube 6, etc.

[0087] The various technical features of this utility model are mutually complementary and functionally supportive of each other. In other words, the technical solution is not a "simple superposition" of technical features among multiple prior art documents. Therefore, this utility model does not fall under the category of "simple superposition" in Chapter 4 of Part II of the Patent Examination Guidelines.

[0088] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A protective device for preventing high-flow nasal oxygen cannulas from chafing the nasal cavity, characterized in that, Includes connectors, sleeves, and protective wings; The connecting part includes an upper arc-shaped side, a lower arc-shaped side, a left side, and a right side. The upper arc-shaped side and the lower arc-shaped side are arranged opposite each other, and the left side and the right side are arranged parallel to each other. The upper arc-shaped side, the lower arc-shaped side, the left side, and the right side form a quadrilateral. The length of the upper arc-shaped side is greater than the length of the lower arc-shaped side. The middle part of the upper arc-shaped side is recessed towards the lower arc-shaped side to form an arc-shaped notch, and the lower arc-shaped side is recessed towards the upper arc-shaped side as a whole. The sleeve includes a left sheath and a right sheath, both of which are C-shaped structures. The opening direction of the C-shaped structure is perpendicular to the plane of the connecting part, pointing from the left side to the right side. The left and right sheaths are fixedly connected to the beginning and end of the upper arc-shaped side, pointing from the upper arc-shaped side to the lower arc-shaped side. The top view projections of the left and right sheaths are tangent to the top view projection of the arc-shaped notch. A left impregnated cloth is fitted onto the outer wall of the left sheath, and a right impregnated cloth is fitted onto the outer wall of the right sheath. A left card strip assembly extending along the length direction is glued to the inside of both ends of the left sheath. A right card strip assembly extending along the length direction is glued to the inside of both ends of the right sheath. Both the left and right card strip assemblies include strip-shaped cards. The protective wing includes a mirror-symmetrical left protective wing and a right protective wing. Each of the left and right protective wing includes a bottom edge, a first oblique edge, an upper bottom edge, and a second oblique edge. The bottom edge and the upper bottom edge are arranged parallel to each other, and the first oblique edge and the second oblique edge are arranged opposite each other. The bottom edge, the first oblique edge, the upper bottom edge, and the second oblique edge together form a trapezoid. The bottom edge of the left protective wing is located closer to the left leather sleeve, and the bottom edge of the right protective wing is located closer to the right leather sleeve. The second oblique edge of the left protective wing is integrally connected to the left side, and the second oblique edge of the right protective wing is integrally connected to the right side.

2. The protective device for preventing the high flow nasal oxygen tube from rubbing the nasal cavity according to claim 1, wherein An L-shaped left guide block is glued to the upper bottom edge of the left wing near the opening of the C-shaped structure, and the length extension direction of the left guide block is the same as the length extension direction of the upper bottom edge of the left wing; an L-shaped right guide block is glued to the upper bottom edge of the right wing near the opening of the C-shaped structure, and the length extension direction of the right guide block is the same as the length extension direction of the upper bottom edge of the right wing.

3. The protective device for preventing the high flow nasal oxygen tube from rubbing the nasal cavity according to claim 2, wherein, Both the left guide block and the right guide block include a horizontal block and a vertical block connected to the horizontal block. The horizontal block and the vertical block form an L-shaped structure, with the right angle of the L-shaped structure facing the bottom edge and the upper arc edge.

4. The protective device for preventing the high flow nasal oxygen tube from rubbing the nasal cavity according to claim 3, characterized in that, An anti-detachment block is provided in the middle of the lower arc-shaped edge. The cross-section of the anti-detachment block perpendicular to its length extension direction is a U-shaped structure, and the opening of the U-shaped structure faces the upper arc-shaped edge. Along the thickness extension direction of the connecting part, the orthographic projection of the anti-detachment block completely overlaps with the connecting part, and the orthographic projection of the side of the anti-detachment block away from the upper arc-shaped edge is located within the orthographic projection of the lower arc-shaped edge.

5. The protective device for preventing the high flow nasal oxygen tube from rubbing the nasal cavity according to claim 3, wherein, A lip protector is provided on the side of the vertical block away from the horizontal block, and the lip protector is a rectangular piece.

6. The protective device to prevent the high flow nasal oxygen tube from rubbing the nasal cavity according to claim 1, wherein, The card includes a first card and a second card, with a gap between the first card and the second card along the circumferential direction of the C-shaped structure, and both the first card and the second card are curved toward the central axis of the C-shaped structure.

7. The protective device to prevent the high flow nasal oxygen tube from rubbing the nasal cavity according to claim 1, wherein, The first oblique edge of the left wing is connected to a left patch, and the first oblique edge of the right wing is connected to a right patch. Both the left and right patches are T-shaped structures. The left patch away from the left wing and the right patch away from the right wing are respectively provided with non-adhesive.

8. The protective device to prevent the high flow nasal oxygen tube from rubbing the nasal cavity according to claim 1, wherein, The left impregnated cloth is adhered to the outer wall of the left leather sleeve, and the right impregnated cloth is adhered to the outer wall of the right leather sleeve.

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