Bent pipe of breathing mask

Abstract

The embodiment of the invention discloses a bent pipe of a breathing mask, and relates to the technical field of medical instruments, the bent pipe comprises an air inlet end, an airway mixing end and an exhaust end, the airway mixing end is used for connecting a pipeline interface of the breathing mask, the exhaust end is arranged between the airway mixing end and the air inlet end, and the exhaust end is provided with an exhaust hole. A safety valve hole (12) and a safety valve plate (13) are arranged between the exhaust end and the air channel mixing end; the breathing machine has the advantages that carbon dioxide exhausted from the exhaust hole is blown towards the approximate direction of an air inlet pipe of the breathing machine, so that the carbon dioxide is prevented from being blown to sleep companies, the air outlet noise is low, sleep is facilitated, when the breathing machine breaks down, the safety valve hole is opened, and the breathing machine is prevented from falling off. And a large amount of carbon dioxide exhaled by the patient is quickly discharged from the safety valve hole.

Description

Technical Field

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

[0002] At present, sleep apnea machines have been widely used in clinical treatment. It is not necessary to insert a tube into the patient's airway through surgery. Instead, 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. For example, in the prior art of patents CN201810310617.1, CN201822275723.9, and CN201922172032.0, the safety valve hole is set between the exhaust end and the intake end; when the ventilator fails, since the safety valve hole is not aligned with the patient's mouth / nose, the exhaled carbon dioxide will be partially turned and discharged, and some of the turns will be reversed or the turns will be compressed and remain in the cavity of the breathing mask; the intake channel is partially used with the exhaust system, and the starting position of the exhaust system is far away from the patient's mouth and nose, so it is difficult for the patient to exhale carbon dioxide; there are exhaust holes on the curved pipe, and the carbon dioxide discharged from the exhaust hole is annoying to the sleeping partner, and the exhaust gas noise is loud and not conducive to sleep. Summary of the invention

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

[0004] The present invention adopts the following technical solution: The present invention provides a curved pipe for a breathing mask, the curved pipe comprising an air inlet end, an airway mixing end and an exhaust end, the airway mixing end being used to connect to a pipeline interface of the breathing mask, the exhaust end being arranged between the airway mixing end and the air inlet end, the exhaust end being provided with an exhaust hole, and a safety valve hole (12) and a safety valve sheet (13) being arranged between the exhaust end and the airway mixing end.

[0005] Furthermore, the exhaust axis of the exhaust hole (15) is parallel to the axis of the air inlet end or / and forms an acute angle with the air inlet end and forms an angle greater than 20 degrees with the axis of the airway mixing end.

[0006] Furthermore, the exhaust end also includes an exhaust cavity, and the exhaust cavity is connected to the exhaust hole.

[0007] Furthermore, the exhaust cavity and the main body of the bent pipe are provided with folding and interlocking positions.

[0008] Furthermore, the bent pipe is provided with a first exhaust passage passing close to the side of the safety valve hole, one end of the first exhaust passage is connected to the exhaust cavity, and the other end is connected to the mask body through the airway mixing end.

[0009] Furthermore, the bent pipe is provided with a second exhaust passage passing near the other side of the safety valve hole, one end of the second exhaust passage is connected to the exhaust cavity, and the other end is connected to the mask body through the airway mixing end.

[0010] Furthermore, the exhaust cavity is provided with noise reduction ribs.

[0011] Furthermore, an airway through hole is provided between the first exhaust duct and the air inlet duct.

[0012] Furthermore, the safety valve plate (13) is located between the safety valve hole (12) and the exhaust hole (15).

[0013] Furthermore, two of the safety valve plates (13) and two of the safety valve holes (12) are provided and are located on both sides close to the bend of the elbow.

[0014] The invention provides a bent pipe of a breathing mask, which has the beneficial effect that when a ventilator fails, carbon dioxide exhaled by a patient is discharged quickly / in large quantities / directly, and the carbon dioxide discharged from the exhaust hole is blown toward the approximate direction of the air inlet pipe of the ventilator, with low gas noise, which is conducive to sleep. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic cross-sectional view of the location of a safety valve hole of a breathing mask; Figure 2 It is a cross-sectional schematic diagram of a curved pipe with an exhaust cavity of a breathing mask; Figure 3 A cross-sectional schematic diagram of a breathing mask with a safety valve hole closed when air is inletted through a curved pipe; Figure 4 A schematic diagram of another safety valve hole position of a breathing mask elbow; Figure 5 A schematic cross-sectional view of another safety valve hole of a breathing mask elbow is shown as open; Figure 6 A schematic cross-sectional view of another type of safety valve hole of a breathing mask elbow is shown as closed; Figure 7 A schematic diagram of the arrangement of a curved pipe safety valve hole and an exhaust duct of a breathing mask; Figure 8 A three-dimensional exploded schematic diagram of the interior of an exhaust cavity of a curved pipe of a breathing mask; Fig. 9The present invention is a three-dimensional exploded schematic diagram of a curved pipe safety valve hole and an exhaust system of a breathing mask.

[0016] Fig.10 A cross-sectional schematic diagram of the connection between an elbow of a breathing mask and a pipe interface of the breathing mask; 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, 4-folding buckle, 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, K1-airway through hole; Intake channel (9) Deformation hand 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

[0017] like Figure 1The preferred implementation scheme of claim 1: the elbow comprises an air inlet end, an airway mixing end, and an exhaust end, the airway mixing end is used to connect the pipeline interface of the breathing mask, the exhaust end is arranged between the airway mixing end and the air inlet end, the exhaust end is provided with an exhaust hole, and a safety valve hole (12) and a safety valve plate (13) are arranged between the exhaust end and the airway mixing end. When the air inlet end takes in air, the air pressure blows the safety valve plate (13), and the safety valve plate (13) rotates to cover the safety valve hole (12), and at the same time, the exhaust hole will discharge a part of the gas, and when the patient exhales carbon dioxide, the carbon dioxide will be taken away in the part of the gas discharged from the exhaust hole. When the ventilator fails, the safety valve plate (13) automatically resets when there is no air pressure, that is, the safety valve hole (12) opens, and the patient enters the normal state of breathing. The carbon dioxide exhaled by the patient is discharged from the exhaust hole and the safety valve hole. Since the exhaust hole is too small, the safety valve hole is the most important exhaust and inhalation channel when the ventilator fails, referred to as the breathing channel; that is, after the ventilator fails, the safety valve hole restores the patient's respiratory system; the biggest feature of the present invention is that the safety valve hole is aligned with and closest to the patient's mouth and nose. The above background problems are perfectly solved: when the ventilator fails, since the safety valve hole is not aligned with the patient's mouth / nose, the exhaled carbon dioxide will be partially turned and discharged, and some will be turned back or the bend will be compressed and remain in the cavity of the breathing mask. The benefits of this invention are obvious: at least two obvious functions are provided at the same time. The exhaust hole (15) is designed in this breathing tube and a safety valve hole is provided. When the ventilator is used normally, the exhaust hole (15) can discharge carbon dioxide; when the ventilator fails, the carbon dioxide exhaled by the patient will be directly, quickly and in large quantities discharged to the outside world.

[0018] According to side tests, when the gas collides with the pipe of the ventilator outside the air inlet end (6), a loud noise will be generated. Therefore, according to claim 2, 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 axial direction of the air inlet end (6) or / and forms a first acute angle while forming a second acute angle (17) with the axial direction of the airway mixing end (7), and the optimal angle of the second acute angle (17) is greater than 20 degrees.

[0019] 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.

[0020] 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. The exhaust cavity is provided with noise reduction ribs (5) for the purpose of changing the direction of gas flow, so that the gas flows collide with each other in a limited space and consume energy, dispersing and balancing the gas, making the exhaust flow of each exhaust hole (15) close to each other, and reducing noise.

[0021] The airway through hole (K1) provided between the first exhaust duct and the airway inlet duct has a very significant effect. When the patient inhales, the airway inlet duct passes through the airway through hole (K1) and combines with the exhaust duct to become the intake air supplied to the patient for inhalation; when the patient exhales, a part of the airway inlet duct passes through the airway through hole (K1) and combines with the exhaust duct to become the inhalation duct.

[0022] The safety valve plate (13) and the safety valve hole (12) are respectively provided with two holes and are located on both sides close to the bend of the elbow. The purpose is to open holes on the left and right sides, which is conducive to reducing the number of exhaust ducts and better utilizing the Venturi principle. Due to the difference in external temperature and wind direction on both sides, the two holes may automatically become one for intake and one for exhaust.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] The above specific implementation is only illustrative and not restrictive. Under the enlightenment of the present invention, ordinary technicians in the field can make many forms without departing from the spirit of the present invention and the scope of protection of the claims, which are all within the protection of the present invention.

Claims

1. A breathing mask elbow, comprising a breathing mask pipe interface, characterized in that: The bent pipe comprises an air inlet end, an airway mixing end and an exhaust end; the airway mixing end is used to connect to a pipe interface of a breathing mask; the exhaust end is arranged between the airway mixing end and the air inlet end; the exhaust end is provided with an exhaust hole; and a safety valve hole (12) and a safety valve plate (13) are arranged between the exhaust end and the airway mixing end.

2. The elbow of the breathing mask according to claim 1, characterized in that: The exhaust axis of the exhaust hole (15) is parallel to the axis of the air inlet end or / and forms an acute angle with the air inlet end and forms an angle greater than 20 degrees with the axis of the airway mixing end.

3. The elbow of the breathing mask 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.

4. The elbow of the breathing mask according to claim 3, characterized in that: The exhaust cavity and the main body of the bent pipe are provided with folding and interlocking positions.

5. The elbow of the breathing mask according to claim 4, characterized in that: The bent pipe is provided with a first exhaust passage passing close to the side of the safety valve hole, one end of the first exhaust passage is connected to the exhaust cavity, and the other end is connected to the mask body through the airway mixing end.

6. The elbow of the breathing mask according to claim 5, characterized in that: The bent pipe is provided with a second exhaust passage passing close to the other side of the safety valve hole, one end of the second exhaust passage is connected to the exhaust cavity, and the other end is connected to the mask body through the airway mixing end.

7. The elbow of the breathing mask according to claim 6, characterized in that: The exhaust cavity is provided with noise reduction ribs.

8. The elbow of the breathing mask according to claim 5, characterized in that: An airway through hole is provided between the first exhaust passage and the air inlet passage.

9. The elbow of the breathing mask according to claim 1, characterized in that: The safety valve plate (13) is located between the safety valve hole (12) and the exhaust hole (15).

10. The elbow of the breathing mask according to claim 1, characterized in that: The safety valve plates (13) and the safety valve holes (12) are respectively provided in pairs and are located on both sides close to the bend of the elbow.

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