Breathing pipeline adapter capable of adjusting air displacement and breathing nasal mask

Abstract

The invention relates to a breathing pipeline adapter capable of adjusting the air displacement and a breathing nasal mask.The breathing pipeline adapter comprises a tubular body, a through airflow channel is formed in the tubular body, the tubular body is provided with a first end and a second end, the first end is used for being connected with nasal masks of different models, and the second end is used for being connected with an external breathing pipeline; the exhalation hole group comprises a plurality of exhalation holes, and the multiple exhalation holes are uniformly formed in the circumferential outer wall of the tubular body in an annular array mode and directly communicate with the airflow channel; the adjusting knob is coaxially arranged on the outer side of the tubular body in a sleeving mode, and a through hole is formed in the adjusting knob; the through holes can be aligned with or staggered with different numbers of exhalation holes, and the air displacement of the airflow channel is adjusted. According to the breathing nasal mask, the exhaust area can be adjusted, exhaled air can be exhausted out of the nasal mask more effectively, for a patient with a large amount of exhaled air, the effective exhaust area can be increased, the exhaled air can be exhausted in time, accumulation of the exhaled air in the nasal mask is avoided, and therefore the relapse phenomenon is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and more specifically, to a breathing tube adapter and a breathing nasal mask with adjustable exhaust volume. Background Art

[0002] Breathing nasal masks are widely used in the medical field for assisting patients in breathing or providing oxygen therapy. Traditional breathing nasal masks usually adopt a fixed exhaust hole design, and their exhaust efficiency is difficult to adapt to the differences in the exhaled gas volumes of different patients. For patients with a large exhaled gas volume, such as snoring patients, children, or patients with respiratory diseases, the exhaled carbon dioxide is likely to stay in the nasal mask, resulting in the phenomenon of re-inhalation.

[0003] The number of exhaust holes of traditional nasal masks is fixed and the distribution is single, and the exhaust area cannot be dynamically adjusted according to the patient's exhaled gas volume. When the patient exhales more gas, some carbon dioxide will stay in the nasal mask and be re-inhaled during inhalation, resulting in an increase in the carbon dioxide concentration in the blood, a decrease in blood oxygen saturation, and interference with the normal breathing rhythm.

[0004] In addition, as disclosed in the Chinese patent with the publication number CN105498057A, a ventilator is disclosed, which sets five exhaust gas volume gears (100%, 75%, 50%, 25%, 0) through an adjustment knob. However, the gears are fixed and the number is limited, and the exhaust area cannot be adjusted in real time and dynamically according to the patient's exhaled gas volume. Actually, on the basis of the original exhaust holes, the exhaust holes are blocked with different areas to reduce the exhaust area. For patients with a large exhaled gas volume, the exhaust demand cannot be fully met, and the phenomenon of re-inhalation is likely to occur. At the same time, its exhalation discharge port is located at the end of the ventilation main pipe, and the exhaled gas needs to pass through a long path to be discharged, which is also likely to form a gas reflux during inhalation, resulting in re-inhalation.

[0005] In view of this, it is necessary to provide a technical solution to solve the above problems. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a breathing tube adapter with adjustable exhaust volume in view of the above-mentioned defects of the prior art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows:

[0008] Construct a breathing tube adapter with adjustable exhaust volume, including:

[0009] A tubular body with a through air flow channel formed inside. The tubular body has a first end and a second end. The first end is used to connect nasal masks of different models, and the second end is used to connect an external breathing tube;

[0010] The exhalation hole group includes a plurality of exhalation holes. A plurality of the exhalation holes are evenly arranged on the circumferential outer wall of the tubular body in an annular array and are directly communicated with the air flow channel. The axis of the air flow channel coincides with the central axis of the tubular body, and the center line of the exhalation hole is perpendicular to the axis of the air flow channel, so that the exhaled gas is discharged evenly in the radial direction.

[0011] The adjustment knob is coaxially sleeved on the outside of the tubular body. At least one through hole is provided on the adjustment knob. By operating the adjustment knob, the through hole can be aligned or misaligned with different numbers of exhalation holes to adjust the effective exhaust volume of the air flow channel.

[0012] As an improvement of the respiratory pipeline adapter, at least two groups of the exhalation hole groups are provided, and the two groups of the exhalation hole groups are respectively located on the two sides of the radial direction of the air flow channel.

[0013] As an improvement of the respiratory pipeline adapter, the coverage range of the through hole extends along the rotation direction of the adjustment knob, and the through hole in the maximum opening state is completely aligned with the exhalation holes of one of the exhalation hole groups.

[0014] As an improvement of the respiratory pipeline adapter, a plurality of limit grooves are provided on the adjustment knob, and elastic protrusions are correspondingly provided on the outer wall of the tubular body. The elastic protrusions are used to cooperate with the limit grooves to form a stepped positioning, and each gear corresponds to covering a fixed number of exhalation holes.

[0015] As an improvement of the respiratory pipeline adapter, a plurality of first exhaust holes are further provided on the circumferential outer wall of the tubular body. The first exhaust holes are all communicated with the air flow channel and are located above the exhalation hole group.

[0016] As an improvement of the respiratory pipeline adapter, an inclined part gradually expanding towards the first end is provided on the inner wall of the tubular body. The first exhaust hole is provided on the inclined part, and a diversion opening facing the first end is provided at its inner end.

[0017] As an improvement of the respiratory pipeline adapter, the tubular body has a bent part, the bent part is located above the exhalation hole group, and a plurality of second exhaust holes are further provided on the bent part. The center lines of the second exhaust holes are all perpendicular to the center line of the exhalation hole.

[0018] As an improvement of the respiratory pipeline adapter, both the first end and the second end are made of soft plastic material.

[0019] As an improvement of the respiratory pipeline adapter, annular corrugated structures are provided on the inner walls of the interfaces of the first end and the second end.

[0020] A breathing nose mask with an anti-relapse function, comprising a nose mask main body and the above-mentioned breathing pipeline adapter with adjustable exhaust volume. The nose mask main body is used to fit the patient's nose and form a sealed space, and the air flow channel is communicated with the sealed space.

[0021] The beneficial effects of the present invention are as follows: This breathing pipeline adapter can adjust the exhaust area, enabling the exhaled gas to be more effectively discharged from the nose mask. For patients with a larger amount of exhaled gas, the effective exhaust area can be increased. At the same time, the exhalation holes are close to the nose mask, allowing the exhaled gas to be discharged in a timely and rapid manner, avoiding accumulation in the nose mask, thereby reducing the occurrence of relapse. Reducing relapse avoids the accumulation of carbon dioxide in the nose mask. When the patient inhales, the content of carbon dioxide inhaled decreases, and the amount of fresh oxygen increases, thereby increasing the blood oxygen concentration and maintaining it at a normal level of 95%-99%, ensuring the normal physiological functions of the human body. The structural design of the first end enables it to adapt to different models of nose masks, solving the problem of insufficient standardization of the interfaces between different models of nose masks and pipelines.

[0022] The exhaled gas volumes of different patients are different. By operating the adjustment knob to adjust the effective exhaust area of the air flow channel, the needs of different patients can be met. For example, patients with more exhaled gas can increase the number of exhalation holes, and patients with less exhaled gas can reduce the number of exhalation holes, achieving personalized adjustment and improving the treatment effect and patient comfort. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will further explain the present invention in conjunction with the drawings and embodiments. The drawings in the following description are only partial embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings:

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the breathing pipeline adapter provided by the present invention;

[0025] Figure 2 It is a cross-sectional view of the breathing pipeline adapter provided by the present invention;

[0026] Figure 3 It is a three-dimensional structural schematic diagram of the tubular body of the breathing pipeline adapter provided by the present invention;

[0027] Figure 4 It is an exploded view of the breathing pipeline adapter provided by the present invention;

[0028] Figure 5 It is a three-dimensional structural schematic diagram of the adjustment knob of the breathing pipeline adapter provided by the present invention;

[0029] Figure 6It is a partial three-dimensional structural schematic diagram of the tubular body of the breathing tube adapter provided by the present invention;

[0030] Figure 7 It is a three-dimensional structural schematic diagram of the breathing nasal mask provided by the present invention;

[0031] Figure 8 It is a cross-sectional view of the breathing nasal mask provided by the present invention;

[0032] In the figure: 1, tubular body; 11, exhalation holes; 12, air flow channel; 13, first exhaust hole; 14, inclined part; 15, diversion opening; 16, bending part; 17, second exhaust hole; 18, first end; 19, second end; 2, adjustment knob; 21, through hole; 22, limit groove; 3, elastic protrusion; 5, nasal mask body; 51, sealing space. Detailed implementation manners

[0033] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are partial embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] A breathing tube adapter with adjustable exhaust volume in a preferred embodiment of the present invention, as Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, includes a tubular body 1. A through air flow channel 12 is formed inside the tubular body 1. The tubular body 1 has a first end 18 and a second end 19. The first end 18 is used to connect nasal masks of different models, and the second end 19 is used to connect an external breathing tube; The exhalation hole group includes a plurality of exhalation holes 11. The plurality of exhalation holes 11 are uniformly arranged on the circumferential outer wall of the tubular body 1 in an annular array and are directly communicated with the air flow channel 12; The axis of the air flow channel 12 coincides with the central axis of the tubular body 1, and the center line of the exhalation hole 11 is perpendicular to the axis of the air flow channel 12, so that exhaled gas is discharged uniformly in the radial direction; The adjustment knob 2 is coaxially sleeved outside the tubular body 1, and at least one through hole 21 is opened on the adjustment knob 2; By operating the adjustment knob 2, the through hole 21 can be aligned or misaligned with different numbers of exhalation holes 11 to adjust the effective exhaust volume of the air flow channel 12.

[0035] Specifically, when the patient uses the nasal mask, the nasal mask and the external breathing tube can be connected through this breathing tube adapter. The exhaled gas enters the air flow channel 12 of the tubular body 1 from the nasal mask. Since the exhalation hole group is evenly arranged on the circumferential outer wall of the tubular body 1 in an annular array and is directly communicated with the air flow channel 12, the gas can be discharged through the exhalation holes 11. The adjustment knob 2 is coaxially sleeved on the outside of the tubular body 1 and is provided with a through hole 21. When the user operates the adjustment knob 2, the knob rotates, so that the through hole 21 is aligned or misaligned with different numbers of exhalation holes 11. When the through hole 21 is aligned with more exhalation holes 11, the effective exhaust area of the air flow channel 12 increases, and the exhaled gas is discharged more smoothly. On the contrary, when the through hole 21 is aligned with fewer exhalation holes 11 or completely misaligned, the effective exhaust area decreases. The exhaled gas of the traditional nasal mask is not discharged smoothly, resulting in re-inhalation. The setting of this breathing tube adapter can adjust the exhaust area, enabling the exhaled gas to be discharged from the nasal mask more effectively. For patients with a large amount of exhaled gas, the effective exhaust area can be increased to allow the exhaled gas to be discharged in time, avoiding accumulation in the nasal mask, thereby reducing the occurrence of re-inhalation. Reducing re-inhalation avoids the accumulation of carbon dioxide in the nasal mask. When the patient inhales, the content of carbon dioxide inhaled decreases, and the amount of fresh oxygen increases. As a result, the blood oxygen concentration in the blood is increased and maintained at the normal level of 95%-99%, ensuring the normal physiological functions of the human body. Different patients have different amounts of exhaled gas. By operating the adjustment knob 2 to adjust the effective exhaust area of the air flow channel 12, the needs of different patients can be met. For example, patients with more exhaled gas can increase the number of exhalation holes 11, and patients with less exhaled gas can reduce the number of exhalation holes 11, achieving personalized adjustment and improving the treatment effect and the comfort of the patients. It overcomes the defect that the fixed exhaust holes cannot adapt to the change of the patient's exhalation volume, and is especially suitable for patients with large respiratory fluctuations, such as snoring and asthma.

[0036] During operation of the nasal mask, the patient's exhaled gas enters the airflow channel 12 of the tubular body 1 through the nasal mask. Because the axis of the airflow channel 12 coincides with the central axis of the tubular body 1, the symmetry of the airflow within the tubular body 1 is ensured. The centerline of the exhalation hole 11 is perpendicular to the axis of the airflow channel 12. This vertical structural design allows the gas, under pressure, to be uniformly discharged from the exhalation hole 11 in a direction perpendicular to the axis of the airflow channel 12, i.e., radially. This uniform radial discharge of exhaled gas avoids concentrated or poor discharge in a single area. Compared to designs with uneven exhaust, this design makes better use of the area of the exhalation hole 11, increasing the amount of gas discharged per unit time and improving exhaust efficiency. This helps to promptly discharge the patient's exhaled gas from the nasal mask, reducing the possibility of rebreathing. This uniform exhaust method ensures relatively uniform pressure distribution within the nasal mask, preventing patient discomfort caused by excessive or insufficient local pressure. When wearing a nasal mask, patients will not feel the concentrated impact of airflow on a certain part of the body, which improves wearing comfort. For patients who need to wear a nasal mask for a long time, such as snoring patients and children, a good wearing experience helps improve their compliance with treatment. At the same time, the even discharge of exhaled gas can better prevent the local accumulation of exhaled carbon dioxide in the nasal mask. During the inhalation process, the fresh air inhaled by the patient will not be diluted by excessive residual carbon dioxide, ensuring a high oxygen content in the inhaled gas, optimizing the gas exchange process, and maintaining normal blood oxygen concentration.

[0037] The structural design of the first end portion 18 enables it to adapt to different types of nasal masks, thereby solving the problem of insufficient standardization of interfaces between different types of nasal masks and pipelines.

[0038] Furthermore, the number of the exhalation holes 11 can be set to 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 or 20 according to needs.

[0039] In some embodiments of the present application, there are at least two sets of exhalation hole groups, and the two sets of exhalation hole groups are respectively located on the radial two sides of the air flow channel 12. Specifically, after the gas exhaled by the patient enters the air flow channel 12 of the tubular body 1 from the nasal mask, due to the characteristic that the air flow diffuses around, under the action of pressure, the air flow will flow towards the radial two sides of the air flow channel 12. At this time, the two sets of exhalation hole groups located on the radial two sides of the air flow channel 12 provide channels for the gas to discharge in two directions; the gas can be discharged from the exhalation hole groups on both sides at the same time, realizing a more dispersed and more efficient exhaust process. For example, when the patient exhales, the air flow spreads out like water waves, and the exhalation hole groups on both sides guide the air flow to discharge at the same time, accelerating the exhaust speed. From the perspective of exhaust efficiency, the two sets of exhalation hole groups increase the exhaust path. Compared with only one set of exhalation holes 11, the gas is discharged faster and more smoothly. This greatly reduces the residual amount of exhaled gas in the nasal mask, effectively reduces the possibility of re-inhalation, and ensures the quality of the gas inhaled by the patient. In terms of exhaust uniformity, the exhalation hole groups located on both sides make the air flow more evenly distributed around the nasal mask when discharging, avoiding the phenomena of local pressure unevenness and gas accumulation caused by unilateral exhaust, and improving the comfort of the patient wearing.

[0040] In some embodiments of the present application, as Figure 5 and Figure 6 shown, the coverage range of the through hole 21 extends along the rotation direction of the adjustment knob 2, and a single through hole 21 is completely aligned with the exhalation holes 11 of an exhalation hole group in the maximum opening state. Specifically, the adjustment knob 2 is coaxially sleeved outside the tubular body 1 and is provided with through holes 21. When the adjustment knob 2 is rotated, since the coverage range of the through hole 21 extends along the rotation direction, during the rotation process, the relative position between the through hole 21 and the exhalation hole group will continuously change. Different starting positions of the rotation of the adjustment knob 2 result in different numbers of alignments between the through hole 21 and the exhalation hole group. When the adjustment knob 2 is rotated to a specific angle, a single through hole 21 reaches the maximum opening state, and at this time, the boundary of the through hole 21 completely coincides with the boundaries of all the exhalation holes 11 of a set of exhalation holes 11, realizing the maximum degree of connection, thereby changing the effective exhaust area of the air flow channel 12.

[0041] It can be flexibly and precisely adjusted according to the actual exhaled gas volume of the patient. For patients with a large exhaled gas volume, the adjustment knob 2 is rotated to align the through hole 21 with more exhalation holes 11, expanding the effective exhaust area to ensure that the exhaled gas can be discharged smoothly. For patients with a small exhaled gas volume, the number of aligned exhalation holes 11 is reduced by rotating the adjustment knob 2 to prevent excessive exhaust and avoid a large influx of external cold air, ensuring the patient's breathing comfort. When a single through hole 21 is fully aligned with an exhalation hole group in the maximum open state, the effective exhaust area of the air flow channel 12 reaches the maximum, and the exhaled gas can be discharged from the nasal mask at the fastest speed, greatly reducing the residue of the exhaled gas in the nasal mask, effectively reducing the risk of re-inhalation, ensuring a high oxygen content in the gas inhaled by the patient, and improving the use effect of the nasal mask.

[0042] In some embodiments of the present application, the adjustment knob 2 is provided with a plurality of limit grooves 22, and the outer wall of the tubular body 1 is correspondingly provided with elastic protrusions 3. The elastic protrusions 3 are used to cooperate with the limit grooves 22 to form a stepped positioning, and each step corresponds to covering a fixed number of exhalation holes 11. Specifically, the number of limit grooves 22 is the same as the number of exhalation holes 11, and each limit groove 22 corresponds to a step with a different number of exhalation holes 11. When the user rotates the adjustment knob 2, the elastic protrusions 3 on the outer wall of the tubular body 1 will slide on the surface of the adjustment knob 2. When the adjustment knob 2 is rotated to a specific position, the elastic protrusions 3 will snap into the corresponding limit grooves 22 to achieve positioning. Since each limit groove 22 corresponds to a specific rotation angle of the adjustment knob 2, and each step corresponds to covering a fixed number of exhalation holes 11, the user can determine the position of the adjustment knob 2 by feeling the jerks when the elastic protrusions 3 snap into the limit grooves 22, and then accurately control the number of exhalation holes 11 aligned with the through hole 21 to achieve a stepped adjustment of the effective exhaust area of the air flow channel 12. The stepped positioning design makes the adjustment process more accurate and stable. It avoids the situation where the exhaust area is unstable due to the random rotation of the adjustment knob 2, provides a stable exhaust effect for the patient, and enhances the reliability and safety of the use of the nasal mask. On the other hand, each step corresponds to a fixed number of exhalation holes 11, which is convenient for medical staff or patients to quickly select a suitable exhaust step according to experience and actual needs, improving the adjustment efficiency. For patients with different exhaled gas volumes, the exhaust area can be quickly adjusted to an appropriate value.

[0043] In some embodiments of the present application, it further includes a first exhaust hole 13 and / or a second exhaust hole 17 opened on the tubular body 1. The first exhaust hole 13 can be opened on the tubular body 1 alone according to requirements, or the second exhaust hole 17 can be opened alone, or both the first exhaust hole 13 and the second exhaust hole 17 can be opened simultaneously.

[0044] In some other embodiments, the tubular body 1 has an exhalation hole 11 and a first exhaust hole 13. A plurality of first exhaust holes 13 are formed in the circumferential outer wall of the tubular body 1. The first exhaust holes 13 are all communicated with the air flow channel 12 and are located above the exhalation hole group. Specifically, the gas exhaled by the patient enters the air flow channel 12 of the tubular body 1 from the nasal mask. When the air flow flows in the channel, since the first exhaust holes 13 are communicated with the air flow channel 12 and are located above the exhalation hole group, according to the characteristics of gas flow, under the action of the pressure difference, a part of the gas will naturally flow upward and be discharged through the first exhaust holes 13. Even when the adjustment knob 2 is in a state of restricting the exhaust of the exhalation hole group, the first exhaust holes 13 always remain open and continuously undertake the task of discharging part of the exhaled gas, serving as a basic exhaust path. From the perspective of exhaust stability, the first exhaust holes 13, as the basic exhaust holes, can ensure that the nasal mask always has a certain exhaust capacity. No matter how the adjustment knob 2 adjusts the exhaust area of the exhalation hole group, it can ensure that gas is continuously discharged, avoiding a large accumulation of gas in the nasal mask due to the complete closure of the exhalation hole group or poor exhaust, providing a reliable backup mechanism for the exhaust process. In terms of improving adaptability, for patients with different breathing habits and fluctuations in the amount of exhaled gas, the first exhaust holes 13 can maintain the basic exhaust function in various situations. For example, when the patient just starts using the nasal mask and has not adjusted the adjustment knob 2 well, or when there is a sudden increase in the amount of exhaled gas during use, the first exhaust holes 13 can discharge the gas in time, enhancing the adaptability of the nasal mask to different usage scenarios and improving the safety and comfort of the patient's use.

[0045] Further, the number of the first exhaust holes 13 can be set to 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 or 20 according to requirements.

[0046] In some other embodiments, the distribution positions of the first exhaust holes 13 correspond to the setting directions of the exhalation holes 11 and the second exhaust holes 17 respectively. Specifically, the first exhaust holes 13 are all arranged to avoid the side close to the patient's face, so as to prevent the exhaled gas from blowing towards the patient's face when discharged through the first exhaust holes 13.

[0047] Designed in combination with the inclined portion 14 and the diversion opening 15 on the inner wall of the tubular body 1, after the exhaled gas enters the air flow channel 12, it is guided by the inclined portion 14 to flow upward to near the first exhaust hole 13, and the diversion opening 15 and the first exhaust hole 13 further guide the gas to be discharged in a specific direction and away from the face. At the same time, the second exhaust hole 17 is opened in the bent portion 16, and its center line is perpendicular to the center line of the exhalation hole 11, ensuring that both exhaust gas flows point to the non-face area and avoiding directly impacting the patient's skin. Although the exhaust direction is adjusted, the first exhaust hole 13 still maintains a direct connection with the air flow channel 12 to ensure that the basic exhaust function is not affected. Through the synergistic effect with the exhalation hole group and the second exhaust hole 17, a multi-directional and hierarchical exhaust path is formed, accelerating the discharge speed of the exhaled gas, reducing the retention of carbon dioxide in the nasal mask, further reducing the risk of re-inhalation, and ensuring the oxygen concentration of the inhaled gas.

[0048] In some other embodiments, an opening and closing rubber ring is sleeved outside the tubular body 1. When the adapter is provided with an exhalation hole group and the first exhaust hole 13 at the same time, and the adapter is connected to a nasal mask with a self-provided exhalation hole and / or an external breathing pipeline with a self-provided exhalation hole; when all the exhalation holes in the exhalation hole group are closed and the exhaust volume is still large, the opening and closing rubber ring can be sleeved at the position corresponding to the first exhaust hole 13 on the tubular body 1, so as to completely close the first exhaust hole 13, and only use the self-provided exhalation hole of the nasal mask and / or the external breathing pipeline as the basic exhaust hole; at the same time, the exhaust volume can be adjusted in real time by adjusting the exhalation hole 11.

[0049] In some embodiments of the present application, the tubular body 1 has an exhalation hole 11, a first exhaust hole 13 and a second exhaust hole 17. The tubular body 1 has a bent portion 16, and the bent portion 16 is located above the exhalation hole group. A plurality of second exhaust holes 17 are opened in the bent portion 16, and the center lines of the second exhaust holes 17 are all perpendicular to the center line of the exhalation hole 11. Specifically, after the gas exhaled by the patient enters the air flow channel 12 of the tubular body 1, first, part of the gas is discharged through the exhalation hole group and the first exhaust hole 13. If there is remaining gas, the remaining gas continues to flow upward in the air flow channel 12. When it reaches the bent portion 16, due to the blockage of the structure of the bent portion 16, it cannot directly flow to the external breathing pipeline. At this time, the second exhaust hole 17 is opened in the bent portion 16, and its center line is perpendicular to the center line of the exhalation hole 11 (parallel to the axis of the tubular body 1 facing the nasal mask). Under the action of pressure, the upward flowing gas will directly be discharged through the second exhaust hole 17, and will not change its flow direction through the bent portion 16 and enter the external breathing pipeline, thus preventing this part of the gas from being inhaled by the patient again along with the oxygen.

[0050] Meanwhile, the second exhaust hole 17 is vertically downwardly formed in the bent portion 16 and is perpendicular to the partial axis of the tubular body 1 facing the external breathing tube. During the normal flow of the oxygen transmitted from the external breathing tube into the tubular body 1, due to the direction of the second exhaust hole 17 being perpendicular to the oxygen flow direction and the structural limitation of the bent portion 16, it is difficult for the oxygen to flow out through the second exhaust hole 17, ensuring that the oxygen can smoothly flow to the nasal mask for the patient to inhale.

[0051] Through the special design of the bent portion 16 and the second exhaust hole 17, a dedicated exhaust channel for the exhaled gas is provided, and the exhaled gas will not mix into the external breathing tube, greatly reducing the possibility of the patient re-inhaling the exhaled gas, reducing the re-breathing phenomenon, and maintaining a high oxygen content in the inhaled gas of the patient. The second exhaust hole 17 cooperates with the exhalation hole group and the first exhaust hole 13 to form a more perfect exhaust system. The exhaust holes at different positions and directions work together to make the exhaust process more efficient and orderly, further improving the overall performance of this adapter. Through the combined setting of the exhalation hole 11, the first exhaust hole 13 and the second exhaust hole 17, the exhaust volume of the nasal mask during the patient's breathing is further increased. It can connect the nasal mask without an exhalation hole and the external breathing tube without an exhalation hole. Even if both of them do not have an exhalation hole, they can still be connected through this adapter, ensuring a fast and stable exhaust speed, and then realizing normal breathing operation, providing more combination methods between the nasal mask and the external breathing tube.

[0052] Furthermore, the number of the second exhaust holes 17 can be set to 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 or 20 according to requirements.

[0053] With the setting of the opening and closing rubber ring, when this adapter is provided with an exhalation hole group, a first exhaust hole 13 and a second exhaust hole 17 at the same time, and is connected to a nasal mask without an exhalation hole and an external breathing tube without an exhalation hole; when the exhalation hole group is all closed and the exhaust volume is still large, the opening and closing rubber ring can be sleeved on the position corresponding to the first exhaust hole 13 of the tubular body 1, and then the first exhaust hole 13 is completely closed, and only the second exhaust hole 17 is used as the basic exhaust hole; at the same time, the exhaust volume can be further adjusted by adjusting the exhalation hole 11.

[0054] In some other embodiments, the tubular body 1 has an exhalation hole group and a second exhaust hole 17. After the gas exhaled by the patient enters the air flow channel 12 of the tubular body 1 through the nasal mask, it directly flows towards the annular array of exhalation hole groups. By rotating the adjustment knob 2, the number of through holes aligned with the exhalation holes 11 can be dynamically adjusted, thereby controlling the exhaust volume. When the remaining exhaled gas continues to flow in the air flow channel 12 to the bent portion 16, it is blocked by the structure of the bent portion 16 and cannot directly enter the external breathing pipeline. The gas is discharged vertically through the second exhaust hole 17 of the bent portion 16, avoiding backflow into the external breathing pipeline and preventing the patient from re-inhaling. After removing the first exhaust hole 13, only the exhalation hole group and the second exhaust hole 17 work together, reducing the number of parts, lowering the manufacturing cost, and at the same time maintaining the core adjustment function. The design that only retains the exhalation hole group and the second exhaust hole 17 is applicable to scenarios that are sensitive to cost and where the patient's exhalation volume fluctuates less, and can achieve the basic anti-re-inhalation function and dynamic adjustment requirements.

[0055] In some embodiments of the present application, a chamfer is provided on the inner wall of the tubular body 1 to form an inclined portion 14 that faces the first end portion 18 and gradually expands, and all the first exhaust holes 13 are located on the inclined portion 14; a diversion opening 15 facing the first end portion 18 is opened at the inner end of each first exhaust hole 13. Specifically, when the gas exhaled by the patient enters the air flow channel 12 of the tubular body 1, the inclined portion 14 formed by the chamfer on the inner wall of the tubular body 1 guides the gas flow. Since the inclined portion 14 faces the first end portion 18 and gradually expands, when the gas flows in the channel, due to the action of the inclined surface, a part of the gas will flow upward and approach the position where the first exhaust hole 13 is located. The diversion opening 15 at the inner end of the first exhaust hole 13 faces the sealing space 51, making it easier for the gas entering the air flow channel 12 from the sealing space 51 to flow into the first exhaust hole 13. The gas is guided at the diversion opening 15 and enters the first exhaust hole 13 more directly, and then is discharged from the first exhaust hole 13. At the same time, since the inclined portion 14 faces the first end portion 18 and gradually expands, oxygen can be prevented from flowing out of the first exhaust hole 13 during the process of passing through the external breathing pipeline through the adapter and entering the nasal mask.

[0056] The inclined portion 14 guides the gas flow towards the first exhaust hole 13, and the diversion opening 15 facilitates the entry of the gas. The two work together to increase the amount of gas discharged through the first exhaust hole 13, accelerate the overall exhaust speed, enable the exhaled gas to be discharged from the nasal mask more quickly, reduce the residue in the nasal mask, and lower the risk of re-inhaling.

[0057] In some embodiments of the present application, the first end portion 18 is made of soft plastic material. Specifically, the soft plastic material has good flexibility and elasticity. When the first end portion 18 of the tubular body 1 is connected to nasal masks of different models, the soft plastic can adaptively deform according to the shape and size of the nasal mask interface. Its molecular structure allows stretching, bending, and deformation within a certain range, so as to closely fit the nasal mask interface and achieve stable connection. It can be adapted to nasal masks and external breathing tubes of different models, eliminating the need to specially customize breathing tubes for different specifications of nasal masks and breathing tubes, reducing the procurement and management costs of medical equipment, and improving the resource utilization efficiency.

[0058] In some embodiments of the present application, annular corrugated structures are provided on the inner walls of the interfaces of the first end portion 18 and the second end portion 19. Specifically, when the first end portion 18 is connected to the nasal mask and the second end portion 19 is connected to the external breathing tube, the annular corrugated structure increases the friction at the interface. The annular corrugations are in close contact with the outer wall of the connected component. Due to the concave-convex structure of the corrugations, the contact area increases, and certain extrusion deformation can occur during connection to fill the tiny gaps that may exist at the connection site. Under the action of gas pressure, the annular corrugated structure can also play a certain elastic sealing role. When there is a tendency for internal gas to leak out, the corrugations will further fit the connected component due to the pressure to prevent gas leakage.

[0059] A breathing nasal mask with an anti-rebreathing function, as Figure 7 and Figure 8 shown, includes a nasal mask body 5 and the above-mentioned adjustable air volume breathing tube adapter. The nasal mask body 5 is used to fit the patient's nose and form a sealed space 51, and the air flow channel 12 communicates with the sealed space 51.

[0060] The present invention provides a breathing tube adapter with adjustable exhaust volume. When the patient exhales, the gas enters the air flow channel 12 of the tubular body 1 from the sealed space 51 of the nasal mask body 5. The exhalation hole group serves as the main exhaust part, and its exhaust volume is controlled by the adjustment knob 2, which can initially adjust the exhaust according to the amount of exhaled gas of the patient. The first exhaust hole 13 serves as a basic exhaust hole and is located above the exhalation hole group and communicates with the air flow channel 12. Regardless of the exhaust state of the exhalation hole group, it can continuously discharge part of the gas, assist the exhalation hole group in exhausting, improve the overall exhaust efficiency, and reduce the accumulation of gas in the nasal mask. After the gas is discharged through the exhalation hole group and the first exhaust hole 13, if there is still remaining gas, it will continue to flow upward to the bending part 16. The second exhaust hole 17 also serves as a basic exhaust hole and is opened at the bending part 16, and its center line is perpendicular to the center line of the exhalation hole 11. The final remaining gas is discharged through the second exhaust hole 17, further ensuring smooth exhaust and at the same time preventing the gas from flowing to the external breathing tube and being re-inhaled by the patient. The three cooperate with each other. The exhalation hole group dominates the initial exhaust adjustment, and the first exhaust hole 13 and the second exhaust hole 17 serve as basic exhaust holes to assist in exhausting, discharging gas from different positions and directions, jointly ensuring the efficient discharge of gas in the breathing nasal mask, reducing the risk of re-inhalation, and improving the patient's use experience.

[0061] It should be understood that those of ordinary skill in the art can make improvements or transformations according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present invention.

Claims

1. An adjustable exhaust volume breathing tube adapter, characterized in that, Comprising: A tubular body with a through airflow channel formed inside. The tubular body has a first end and a second end. The first end is used to connect nasal masks of different models, and the second end is used to connect an external breathing tube. An exhalation hole group including a plurality of exhalation holes. The plurality of exhalation holes are evenly arranged on the circumferential outer wall of the tubular body in an annular array and are directly communicated with the airflow channel. The axis of the airflow channel coincides with the central axis of the tubular body, and the center line of the exhalation hole is perpendicular to the axis of the airflow channel, so that the exhaled gas is discharged evenly in the radial direction. An adjustment knob coaxially sleeved outside the tubular body, and at least one through hole is provided on the adjustment knob. By operating the adjustment knob, the through hole can be aligned or misaligned with different numbers of exhalation holes to adjust the effective exhaust volume of the airflow channel.

2. The adjustable air volume breathing tube adapter according to claim 1, characterized in that, At least two groups of the exhalation hole groups are provided, and the two groups of exhalation hole groups are respectively located on both radial sides of the airflow channel.

3. The adjustable exhaust volume breathing tube adapter according to claim 2, wherein The coverage range of the through hole extends along the rotation direction of the adjustment knob, and in the maximum opening state, a single through hole is completely aligned with the exhalation holes of one of the exhalation hole groups.

4. The adjustable air volume breathing pipeline adapter according to claim 1, wherein, A plurality of limiting grooves are provided on the adjustment knob, and elastic protrusions are correspondingly provided on the outer wall of the tubular body. The elastic protrusions are used to cooperate with the limiting grooves to form stepped positioning, and each step corresponds to covering a fixed number of exhalation holes.

5. The adjustable air volume breathing tube adapter according to claim 1, characterized in that A plurality of first exhaust holes are also provided on the circumferential outer wall of the tubular body. The first exhaust holes are all communicated with the airflow channel and are located above the exhalation hole group.

6. The adjustable exhaust volume breathing tube adapter according to claim 5, wherein An inclined portion gradually expanding towards the first end is provided on the inner wall of the tubular body. The first exhaust hole is provided on the inclined portion, and a diversion opening towards the first end is provided at its inner end.

7. The adjustable air volume breathing tube adapter according to claim 1, characterized in that, The tubular body has a bent portion located above the exhalation hole group, and a plurality of second exhaust holes are also provided in the bent portion. The center lines of the second exhaust holes are all perpendicular to the center line of the exhalation hole.

8. The adjustable exhaust volume breathing tube adapter according to any one of claims 1-8, characterized in that The first end is made of soft plastic material.

9. The adjustable exhaust volume breathing tube adapter according to claim 8, characterized in that, Annular corrugated structures are provided on the inner walls of the interfaces of the first end and the second end.

10. A breathing nasal mask with an anti-relapse function, characterized in that, Comprising a nasal mask body and the adjustable exhaust volume breathing tube adapter according to any one of claims 1-9 above. The nasal mask body is used to fit the patient's nose and form a sealed space, and the airflow channel is communicated with the sealed space.

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