Bent pipe exhaust structure and breathing mask

Abstract

The embodiment of the invention discloses a bent pipe exhaust structure and a breathing mask, and relates to the technical field of medical instruments, the bent pipe exhaust structure comprises a breathing mask main body, the breathing mask main body is provided with a pipeline interface, a bent pipe comprises an air inlet end, an airway mixing end and an exhaust end, the airway mixing end is communicated with the pipeline interface, and the exhaust end is communicated with the pipeline interface. The exhaust end is arranged between the air passage mixing end and the air inlet end, the exhaust end comprises an exhaust hole, the exhaust axial direction of the exhaust hole is parallel to the axial direction of the air inlet end or / and forms a first acute angle with the axial direction of the air inlet end, and the air passage mixing end comprises an air inlet passage and an exhaust passage. The breathing mask comprising the bent pipe exhaust structure is provided with a safety valve hole and a safety valve plate, when a breathing machine breaks down, the safety valve hole is opened, and a large amount of carbon dioxide exhaled by a patient is rapidly exhausted from the safety valve hole.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a bent pipe exhaust structure and a breathing mask. Background Art

[0002] At present, sleep apnea machines have been widely used in clinical treatment. Instead of inserting a tube into the patient's airway through surgery, a pressure ventilation device and a breathing mask worn on the patient's face are used to deliver a continuous pressure ventilation to the patient's airway to treat the patient. In the prior art, a curved pipe is usually set on the front of the breathing mask, and an exhaust hole is set on the curved pipe. The carbon dioxide discharged from the exhaust hole is annoying to the sleeping partner, and the exhaust gas is noisy and not conducive to sleep. When the ventilator fails, the carbon dioxide exhaled by the patient cannot be discharged quickly. Summary of the invention

[0003] The purpose of the present invention is to provide a bent pipe exhaust structure and a breathing mask, aiming to solve the existing technology. The beneficial effect is that the carbon dioxide discharged from the exhaust hole is blown toward the general direction of the intake pipe of the ventilator, the gas noise is small, it is conducive to sleep, and the carbon dioxide exhaled by the patient is quickly and directly discharged in large quantities.

[0004] The present invention adopts the following technical solution: The present invention provides a bent pipe exhaust structure, comprising a breathing mask body, wherein the breathing mask body is provided with a pipeline interface, and is characterized in that the bent pipe comprises an air inlet end, an airway mixing end, and an exhaust end, wherein the airway mixing end is connected to the pipeline interface, and the exhaust end is arranged between the airway mixing end and the air inlet end, and the exhaust end comprises an exhaust hole, and the exhaust axis of the exhaust hole is parallel to the axis of the air inlet end or / and forms a first acute angle.

[0005] Furthermore, the first acute angle is less than 70 degrees.

[0006] Furthermore, the exhaust axis of the exhaust hole is parallel to the axis of the intake end or / and forms a first acute angle while forming a second acute angle with the axis of the airway mixing end, and the second acute angle is greater than 20 degrees.

[0007] Furthermore, the exhaust holes are provided with at least 6 holes, which are trumpet-shaped, with the outer side being smaller than the inner side.

[0008] Furthermore, the exhaust end also includes an exhaust cavity, and the exhaust cavity is connected to the exhaust hole.

[0009] Furthermore, the exhaust cavity and the main body of the bent pipe are provided with folding and interlocking positions.

[0010] Furthermore, the exhaust cavity is provided with a first end and a second end, the space at the first end is larger than the space at the second end, the bent pipe is provided with a first exhaust duct, one end of the first exhaust duct is connected to the exhaust cavity, and the other end is connected to the mask body through the airway mixing end.

[0011] Furthermore, a noise reduction rib is provided between the first end and the second end.

[0012] Furthermore, an airflow steering device is provided at one end of the first exhaust duct connected to the mask body.

[0013] A breathing mask is also provided, comprising the bent pipe exhaust structure described in any one of the above items, wherein the outer wall of the breathing mask body is provided with a nose pressure connection position and a face pressure connection position, and a safety valve hole (12) and a safety valve plate (13) are provided between the nose pressure connection position, the face pressure connection position and the pipeline interface, and the safety valve plate (13) is located between the safety valve hole (12) and the pipeline interface, and the safety valve plate (13) is used to cover the safety valve hole (12) and open the safety valve hole (12).

[0014] The present invention provides a bent pipe exhaust structure. The greatest beneficial effect is that the carbon dioxide discharged from the exhaust hole is blown toward the general direction of the air inlet pipe of the ventilator to avoid blowing to the sleeping partner, the exhaust noise is small, and it is conducive to sleep.

[0015] A further beneficial effect is that the exhaust noise is smaller, which is more conducive to sleep.

[0016] A breathing mask has the beneficial effect that when a breathing machine fails, a safety valve hole opens, and a large amount of carbon dioxide exhaled by a patient is quickly discharged from the safety valve hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic cross-sectional view of a bent pipe exhaust structure; Figure 2 is a further cross-sectional schematic diagram of a bent pipe exhaust structure; Figure 3 A front cross-sectional schematic diagram of a mask body connected to a curved pipe exhaust structure; Figure 4 A schematic diagram of the position of a safety valve hole of a breathing mask; Figure 5 A cross-sectional schematic diagram of a breathing mask with a safety valve hole closed; Figure 6 A cross-sectional schematic diagram of a breathing mask with a safety valve hole opened; Figure 7 A schematic diagram of a bent pipe exhaust structure further including an exhaust cavity; Figure 8Another schematic diagram of a bent pipe exhaust structure further including an exhaust cavity.

[0018] Markings in the figure: 15-exhaust hole, 12-safety valve hole, 13-safety valve plate, A1-first exhaust channel, A2-second exhaust channel, 10-diverter, B1-mask body, 1-elbow, 11-exhaust cavity, 9-intake channel, 5-noise reduction rib, 6-intake end, 7-airway mixing end, 8-exhaust end, B2-pipeline interface, 16-first acute angle, 17-second acute angle, 18-first end, 19-second end, 20-air flow steering device, 21-nose pressure connection position, 22-face pressure connection position. (11) Intake channel (9) Deformation hand press position (3) Folding buckle (4) Noise reduction rib (5) Inlet end (6) Airway mixing end (7) Exhaust end (8) Pipeline interface (B2) First acute angle (16) Second acute angle (17) First end (18) Second end (19) Airflow redirecting device (20) Nose pressing connection position (21) Face pressing connection position (22) DETAILED DESCRIPTION

[0019] The preferred implementation scheme of claim 1: The pipeline of the ventilator is connected to the air inlet end (6) of the curved pipe (1), and the airway mixing end (7) of the curved pipe (1) is connected to the pipeline interface (B2) of the mask. Since the pipeline of the ventilator is connected from one side of the patient, and there may be a sleeping partner on the other side, the present invention is that an exhaust end (8) is provided on the curved pipe (1), the exhaust end (8) is higher than the outer wall of the air inlet end (6), and the exhaust direction of the exhaust hole (15) on the exhaust end (8) is close to the air inlet end (6). The explanation of the airway mixing end (7) is that when the patient exhales, this end will become the carbon dioxide discharge and natural air intake collection end, that is, this end includes air intake and exhaust functions; therefore, the carbon dioxide exhaled by the patient passes through the airway mixing end (7) and blows out from the exhaust hole (15) along the approximate direction of the pipeline of the ventilator. Because the axial direction of the exhaust hole (15) forms an acute angle or is parallel to the axial direction of the air inlet end (6), the blown gas will not directly collide with the outer side of the air inlet end (6). After side testing, it was found that when the gas collides with the pipe of the ventilator outside the air inlet end (6), a lot of noise will be generated. The greatest benefit of this implementation scheme is that the carbon dioxide discharged from the exhaust hole is blown toward the general direction of the air inlet pipe of the ventilator, avoiding blowing to the sleeping partner or avoiding blowing to the quilt, and the exhaust noise is small, which is conducive to sleep.

[0020] After multiple tests, it was found that when the gas collides with the pipe of the ventilator outside the air inlet end (6), a loud noise will be generated. Therefore, rights 2 and 3. The optimal angle of the first acute angle (16) is less than 70 degrees. The exhaust axis of the exhaust hole is parallel to the axis of the air inlet end (6) or / and forms a second acute angle (17) with the axis of the airway mixing end (7) while forming the first acute angle. The optimal angle of the second acute angle (17) is greater than 20 degrees. The above are all after multiple tests.

[0021] The exhaust holes (15) are provided with at least 6 and are trumpet-shaped, with the outer side smaller than the inner side. The purpose is to design more than 6 exhaust holes (15) to discharge carbon dioxide based on the carbon dioxide capacity of current respirators and masks after multiple and various tests. The trumpet-shaped exhaust holes can speed up the discharge of carbon dioxide, reduce noise, and meet the medical safety standards of the People's Republic of China.

[0022] An exhaust cavity (11) is provided, and the exhaust cavity (11) and the main body of the curved pipe (1) are provided with a folding interlocking position (4). The exhaust cavity is provided with a first end (18) and a second end (19), and the space of the first end (18) is larger than the space of the second end (19). The curved pipe (1) is provided with a first exhaust channel (A1), and one end of the first exhaust channel (A1) is connected to the exhaust cavity (11), and the other end is connected to the mask body through the airway mixing end (7). The purpose is to separate the air intake channel (9) from the exhaust system, shorten the distance between the starting position of the exhaust system and the patient's mouth and nose, so that the carbon dioxide exhaled by the patient can be discharged near the mouth and nose.

[0023] The exhaust cavity and the main body of the elbow are provided with folding and interlocking positions, which is beneficial for the folding and sanitary cleaning of the exhaust cavity. A noise reduction rib (5) is provided between the first end (18) and the second end (19) to change the direction of gas flow, so that the gas flows collide with each other in a limited space and consume energy, disperse and balance the gas, and make the exhaust flow of each exhaust hole (15) close to each other, thereby reducing noise.

[0024] An airflow redirecting device (20) is provided at one end of the first exhaust passage (1) connected to the mask body (B2). The purpose is to quickly disperse the gas entering the mask, leaving multiple spaces for the carbon dioxide exhaled by the patient to form convection with the air intake and exhaust systems near the mouth and nose, so that the carbon dioxide can be discharged in large quantities and quickly. It is further conducive to closing the safety valve hole (12) and the safety valve plate (13) of the breathing mask.

[0025] like Figure 3 / 4 / 5 / 6 A preferred implementation scheme of a breathing mask, in conjunction with the above-mentioned bent pipe exhaust structure, the outer wall of the breathing mask body (B2) is provided with a nose pressure connection position (21) and a face pressure connection position (22), and a safety valve hole (12) and a safety valve plate (13) are provided between the nose pressure connection position (21), the face pressure connection position (22) and the pipeline interface (B2), the safety valve plate (13) is located between the safety valve hole (12) and the pipeline interface, and the safety valve plate (13) is used to cover the safety valve hole (12) and open the safety valve hole (12). When the ventilator fails, the safety valve plate (13) automatically resets and leaves the safety valve hole (12) when there is no air pressure. Since the safety valve plate (13) is installed between the safety valve hole (12) and the pipeline interface, the opening of the safety valve hole (12) faces the patient's mouth and nose after opening, that is, the safety valve holes (12) are arranged on two opposite sides between the mouth and nose, and the carbon dioxide in the patient's exhalation direction is discharged in large quantities and quickly near the mouth and nose.

[0026] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The above-mentioned specific implementations are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can make many forms without departing from the scope of protection of the present invention and the claims, all of which are protected by the present invention.

Claims

1. A curved pipe exhaust structure, comprising a breathing mask body, wherein the breathing mask body is provided with a pipeline interface, characterized in that: The bent pipe includes an air inlet end, an airway mixing end, and an exhaust end. The airway mixing end is connected to the pipeline interface. The exhaust end is arranged between the airway mixing end and the air inlet end. The exhaust end includes an exhaust hole. The exhaust axis of the exhaust hole is parallel to the axis of the air inlet end or / and forms a first acute angle.

2. The elbow exhaust structure according to claim 1, characterized in that: The first acute angle is less than 70 degrees.

3. The elbow exhaust structure according to claim 1, characterized in that: The exhaust axis of the exhaust hole is parallel to the axis of the intake end or / and forms a first acute angle while forming a second acute angle with the axis of the airway mixing end, and the second acute angle is greater than 20 degrees.

4. The elbow exhaust structure according to claim 1, characterized in that: The exhaust holes are at least 6 in number and are trumpet-shaped, with the outer side being smaller than the inner side.

5. The elbow exhaust structure according to claim 1, characterized in that: The exhaust end further includes an exhaust cavity, and the exhaust cavity is connected to the exhaust hole.

6. The elbow exhaust structure according to claim 5, characterized in that: The exhaust cavity and the main body of the bent pipe are provided with folding and interlocking positions.

7. The elbow exhaust structure according to claim 5, characterized in that: The exhaust cavity is provided with a first end and a second end, the space at the first end is larger than the space at the second end, the bent pipe is provided with a first exhaust duct, one end of the first exhaust duct is connected to the exhaust cavity, and the other end is connected to the mask body through the air duct mixing end.

8. The elbow exhaust structure according to claim 7, characterized in that: A noise reduction rib is provided between the first end and the second end.

9. The elbow exhaust structure according to claim 7, characterized in that: An airflow steering device is provided at one end of the first exhaust passage connected to the mask body.

10. A breathing mask, characterized in that , comprising the bent pipe exhaust structure according to any one of claims 1 to 9, wherein the outer wall of the respiratory mask body is provided with a nose pressure connection position and a face pressure connection position, and a safety valve hole (12) and a safety valve plate (13) are provided between the nose pressure connection position, the face pressure connection position and the pipeline interface, and the safety valve plate (13) is located between the safety valve hole (12) and the pipeline interface, and the safety valve plate (13) is used to cover the safety valve hole (12) and open the safety valve hole (12).

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