WO2024002362A1 - Headworn tube, mask system, breathing mask, and ventilation treatment equipment - Google Patents

Abstract

A breathing mask and ventilation equipment, which relate to the technical field of ventilation equipment. The breathing mask comprises an interface assembly (20), a headworn tube (200), and a strap; the interface assembly (20) is used for being worn on the face of a user so as to be in communication with the respiratory tract of the user; the headworn tube (200) comprises a headworn portion (11) and a connecting portion, the headband portion (11) being at least partially worn on the top of the head of the user, the connecting portion being in communication with the interface assembly (20), the headworn portion (11) being in communication with the connecting portion by means of a first bending portion at the left side of the head of the user and a second bending portion at the right side of the head of the user, and the bending angle of the first bending portion and the second bending portion facing behind the head of the user; the strap is worn behind the head of the user, a first end of the strap is connected to the first bending portion, and a second end of the strap is connected to the second bending portion; the length of the strap is adjusted to adjust the bending angle of the first bending portion and the second bending portion as well as the front-back positions of the first bending portion and the second bending portion on the head of the user.

Description

Headgear tubes, mask systems, respiratory masks and ventilatory therapy equipment

This application is required to be submitted to the China Patent Office on June 30, 2022, with the application number 202221696133.3, and the application name is "Respiratory Mask and Ventilation Treatment Equipment", and to the China Patent Office on June 30, 2022, with the application number 202221674113.6. The priority of the Chinese patent application titled "Respiratory Mask and Ventilation Equipment", submitted to the China Patent Office on June 30, 2022, with the application number 202210765290.3 and the application name "Headgear Tube, Mask System and Ventilation Equipment" and its entire content incorporated herein by reference.

Technical field

Embodiments of the present application relate to the technical field of ventilation equipment, and in particular, to a headgear tube, a mask system, a respiratory mask and a ventilation treatment device.

Background technique

Ventilation equipment usually includes a respirator and a respirator. The respirator is worn on the user's face. The respirator is connected to the respirator through a pipeline so that the gas generated by the respirator is provided to the user through the respirator.

Some respirators include a headgear tube that partially surrounds the user's head when worn. However, different users have different head sizes. When the size of the user's head is larger, the headband tube will be tighter after being worn. When the size of the user's head is smaller, the headband tube will be looser after being worn. That is, when the size of the user's head does not match the size of the headgear tube, the wearing experience of the respirator will be poor.

Application content

Embodiments of the present application provide a respirator mask and ventilation equipment to solve the problem of poor wearing experience of the respirator mask caused when the size of the user's head does not match the size of the headgear tube.

In a first aspect, the present application provides a respiratory mask, including an interface component, a headgear tube and a strap; the interface component is used to be worn on the user's face to communicate with the user's respiratory airway; the headgear tube includes a headband The headband part and the connecting part are at least partially worn on the top of the user's head. The connecting part is connected to the interface component, and the headband part and the connecting part are connected by a hole located on the left side of the user's head. The first bending part is connected with the second bending part located on the right side of the user's head, and the bending angles of the first bending part and the second bending part are toward the back of the user's head; the strap is used for wearing Behind the user's head, the first end of the strap is connected to the first bending part, and the second end of the strap is connected to the second bending part; adjust the length of the strap to The bending angle of the first bending part and the second bending part is adjusted and the first bending part and the second bending part are located at the front and rear positions of the user's head.

Optionally, the first bending part and/or the second bending part includes a bending tube, and a depression is provided on a side of the bending tube toward the front of the user's head that is recessed into the bending tube. structure, and the side of the bending tube facing behind the user's head is not provided with the recessed structure.

Optionally, a plurality of the recessed structures is provided on the side of the bent tube facing the front of the user, and each of the recessed structures is spaced apart along the length direction of the bent tube.

Optionally, the bending modulus of the side of the bending tube facing the front of the user is smaller than the bending modulus of the side of the bending tube facing behind the user's head.

Optionally, the first bending portion and/or the second bending portion include a hinge joint.

Optionally, the hinged joint includes a first pipe and a second pipe, the first pipe is rotatably sleeved on the outer wall of the second pipe; the first pipe is connected to the headband part, so The second pipe is connected to the connecting part; or the first pipe is connected to the connecting part, and the second pipe is connected to the headband part.

Optionally, the strap is an elastic strap.

Optionally, a protrusion is provided on a side of the first bending portion and/or the second bending portion toward the rear of the user, and the strap is connected to the protrusion.

Optionally, the headgear tube has an elliptical, racetrack-shaped or D-shaped cross-section.

In a second aspect, this application provides a ventilation device, including the respiratory mask.

In a third aspect, embodiments of the present application provide a respiratory mask, including: a liner, a headband tube and a back headband;

The cushion includes opposing first and second sides, the first side having a ventilation cavity for receiving the patient's mouth and/or nose, the cushion being provided with at least one opening, the opening being in contact with the patient's mouth and/or nose. The ventilation cavities are connected;

The headgear tube is connected to the opening, and is used to fix the pad at an effective treatment position on the patient's face and transmit airflow to the ventilation cavity through the opening;

The headgear tube surrounds both sides of the patient's face and at least part of the top of the head during use. The headgear tube is provided with at least two connecting portions close to the left and right ears of the patient. The connecting parts are arranged along the length direction of the headgear tube;

The back headband surrounds at least part of the patient's back head, and two ends of the back headband are respectively connected to the connecting portion.

Optionally, both ends of the back headband are respectively provided with snap-in parts or hinge parts, and the snap-in parts are snap-in-lock with the connection part, or the hinge parts are hinge-connected with the connection part.

Optionally, the connecting part is a hole-shaped structure, the clamping part is a buckle, and the buckle is connected to the Hole structure snap-fit.

Optionally, the connecting part is a raised structure, the clamping part is a sleeve, and the sleeve is sleeved on the raised structure.

Optionally, the raised structure extends toward the patient's nose.

Optionally, there is a gap between adjacent protruding structures.

Optionally, the second side of the pad is provided with at least one valve seat, the valve seat is disposed opposite the opening, and the headgear tube is detachably connected to the valve seat;

The valve seat is provided with a valve hole and a valve plate, and the valve hole is connected to the outside world;

The valve plate is arranged opposite to the valve hole and connected to the valve seat;

The valve plate has a first position and a second position relative to the valve seat;

When the valve plate is in the first position, the valve plate is engaged with the valve hole, and the ventilation cavity is in a relatively sealed state;

When the valve plate is in the second position, the valve plate is separated from the valve hole, and the ventilation cavity communicates with the outside world through the valve hole.

Optionally, an exhaust structure is provided on the gasket and/or the valve seat, and the ventilation cavity is connected to the outside through the exhaust structure.

Optionally, the headgear tube is provided with a pipeline joint near the top of the patient's head, and the pipeline joint is used to connect the air supply pipeline;

An exhaust structure is provided on the pipe joint, and the ventilation cavity is connected to the outside through the exhaust structure.

In a fourth aspect, embodiments of the present application provide a ventilation treatment device, including: the above-mentioned respiratory mask.

In a fifth aspect, the present application provides a headband tube, the inner wall of the headband tube is provided with a plurality of first protrusions arranged in an array, and a third protrusion is provided between two adjacent first protrusions. A gap, a plurality of the first gaps are connected to form a first airflow channel extending longitudinally along the headgear tube.

Optionally, the inner wall of the headband tube includes an opposite first inner wall and a second inner wall, the first protrusion is provided on the first inner wall, and the second inner wall is provided with an array arranged in an array. A plurality of second protrusions, the height of the second protrusions being smaller than the height of the first protrusions.

Optionally, a second gap is provided between two adjacent second protrusions; the projection of the second protrusion on the first inner wall is less than or equal to the projection of the first gap on the first inner wall. The projection of the first protrusion on the second inner wall is less than or equal to the projection of the second gap on the second inner wall.

Optionally, the inner wall of the headband tube includes an opposite first inner wall and a second inner wall, the first protrusion is provided on the first inner wall, and the second inner wall is provided with an array arranged in an array. A plurality of third protrusions, a third gap is provided between two adjacent third protrusions; the projection of the third protrusion on the first inner wall is smaller than the projection of the first gap on the first inner wall. The projection of the inner wall; the projection of the first protrusion on the second inner wall is smaller than the projection of the third gap on the second inner wall.

Optionally, the height of the third protrusion is equal to the height of the first protrusion.

Optionally, the inner wall of the headband tube includes an opposite first inner wall and a second inner wall, the first protrusion is provided on the first inner wall, and the second inner wall is provided with an array arranged in an array. A plurality of fourth protrusions, a fourth gap is provided between two adjacent fourth protrusions; the projection of the fourth protrusions on the first inner wall is larger than the projection of the first gap on the first inner wall. The projection of the inner wall and/or the projection of the first protrusion on the second inner wall is greater than the projection of the fourth gap on the second inner wall.

Optionally, a plurality of the fourth gaps are connected to form a second airflow channel extending longitudinally along the headgear tube.

Optionally, the projection of the first protrusion and the fourth protrusion on the inner wall of the headgear tube is a rhombus, and the projection of the fourth protrusion on the first inner wall is consistent with at least three of the The first protrusion overlaps the projected portion of the first inner wall.

Optionally, the first protrusion is provided on the first inner wall, and the projection of the first protrusion on the first inner wall is a polygon, a circle or an ellipse.

Optionally, when projected into a polygon, the first side of the polygon is parallel to the axis of the headgear tube, and the first sides of two polygons adjacent along the longitudinal direction of the headgear tube are collinear.

Optionally, the polygon includes rhombus, rectangle and triangle.

In a sixth aspect, the present application provides a mask system, including the headgear tube.

In a seventh aspect, the present application provides a ventilation device, including the mask system.

In the respiratory mask and ventilation equipment provided by this application, by adjusting the length of the strap, the headband part and the connecting part can be relatively bent through the first bending part and the second bending part, thereby adjusting the headband tube on the user's head. The fixed position and the angle between the headband part and the connecting part meet the wearing comfort and experience of users with different head sizes, while ensuring the sealing of the interface component in contact with the user's face, ensuring the effectiveness of the respiratory mask. . When the size of the user's head is large, the strap can be relatively elongated, so that the first bending part and the second bending part are relatively forward on the side of the user's head, and the bending angle is large, so that the interface assembly And the headband tube can be tightly connected to the user's head. When the size of the user's head is small, the strap can be relatively contracted, so that the first bending part and the second bending part are positioned relatively rearward on the side of the user's head, and the bending angle is small, thereby keeping the interface assembly and the head Belt tubes can be tightly connected in User head.

The above description is only an overview of the technical solutions of the present application. In order to have a clearer understanding of the technical means of the present application, they can be implemented according to the content of the description, and in order to make the above and other purposes, features and advantages of the present application more obvious and understandable. , the specific implementation methods of the present application are specifically listed below.

Description of drawings

In order to more clearly explain the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a simplified diagram after wearing the respiratory mask embodiment provided by the present application;

Figure 2 is a simplified second view of the respiratory mask embodiment provided by this application after wearing it;

Figure 3 is an isometric view of the respiratory mask in Embodiment 1;

Figure 4 is a front view of the respiratory mask in Embodiment 1;

Figure 5 is a left side view of a respiratory mask according to the embodiment;

Figure 6 is a schematic diagram of a safety valve seat in an embodiment of a respiratory mask provided by this application;

Figure 7 is a schematic diagram 2 of a safety valve seat in an embodiment of a respiratory mask provided by this application;

Figure 8 is a schematic diagram of a hinged joint of the respiratory mask in Embodiment 2;

Figure 9 is a schematic diagram 2 of a hinged joint of the respiratory mask in Embodiment 2;

Figure 10 is a cross-sectional view of a hinged joint of the respiratory mask in Embodiment 2;

Figure 11 is one of the schematic diagrams of wearing the respiratory mask described in the embodiment of the present application;

Figure 12 is the second schematic diagram of wearing the respiratory mask described in the embodiment of the present application;

Figure 13 is one of the structural schematic diagrams of the respiratory mask described in the embodiment of the present application;

Figure 14 is the second structural schematic diagram of the respiratory mask described in the embodiment of the present application;

Figure 15 is the third structural schematic diagram of the respiratory mask described in the embodiment of the present application;

Figure 16 is the fourth structural schematic diagram of the respiratory mask described in the embodiment of the present application;

Figure 17 is the fifth structural schematic diagram of the respiratory mask described in the embodiment of the present application;

Figure 18 is the sixth structural schematic diagram of the respiratory mask described in the embodiment of the present application;

Figure 19 is a schematic diagram of an embodiment of a headband tube provided by the present application before deformation;

Figure 20 is a schematic diagram of the headgear tube shown in Figure 19 after deformation;

Figure 21 is a schematic diagram of an embodiment of a headband tube provided by the present application after extrusion deformation;

Figure 22 is a schematic diagram of the headgear tube shown in Figure 21 after torsion and deformation;

Figure 23 is a schematic diagram of an embodiment of a headband tube provided by the present application after torsion deformation;

Figure 24 is a partial structural schematic diagram of an embodiment with a tube provided by the present application;

Figure 25 is an expanded view of the headgear tube shown in Figure 24;

Figure 26 is a schematic diagram of one of the arrangements of the first protrusion and the third protrusion after the headgear tube is torsionally deformed;

Figure 27 is a schematic structural diagram of a headband tube provided by the present application;

Figure 28 is a partial structural diagram of the headband tube shown in Figure 27;

Figure 29 is a partial structural diagram of the headband tube shown in Figure 27;

Figure 30 is an expanded view of the headgear tube shown in Figure 27;

Figure 31 is a partial enlarged view of Figure 30;

FIG. 32 is a schematic diagram of one of the arrangements of the first protrusion and the fourth protrusion after the headband tube shown in FIG. 27 is torsionally deformed.

Reference signs:
11-Headband part; 12-First connecting part; 13-Recessed structure; 14-Tab; 15-Through hole; 16-Hinged joint; 16a-First takeover; 16b-Second takeover; 20-Interface component; 30-safety valve seat; 31-buckle connection; 32-mounting hole; 33-valve cavity; 34-connection port; 35-ventilation hole; 40-bend; 41-middle piece;
100-gasket; 200-headband tube; 300-second connection part; 400-valve seat; 50-pipe joint;
101-the first inner wall; 201-the second inner wall;
11-the first protrusion; 11a-the first gap;
21-Second protrusion; 22-Third protrusion; 23-Fourth protrusion.

Specific embodiments

In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments These are part of the embodiments of this application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clear, this application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application and are not used to limit the present application.

The terms "first", "second", "third", "fourth", etc. (if present) in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used for Describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the application described herein can, for example, be practiced in sequences other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, e.g., a process, method, system, product, or apparatus that encompasses a series of steps or units and need not be limited to those explicitly listed. Those steps or elements may instead include other steps or elements not expressly listed or inherent to the process, method, product or apparatus.

The technical solution of the present application will be described in detail below with reference to specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

Non-invasive positive pressure ventilation therapy is widely used as an auxiliary treatment for obstructive sleep apnea, chronic obstructive emphysema and other conditions. It does not require surgical insertion of a tube into the patient's airway, but is worn on the patient's face. The respiratory mask connects the ventilator to the patient's respiratory airway, thereby using the ventilator to deliver a continuous pressure ventilation or changing pressure ventilation (for example, bilevel pressure that changes with the patient's breathing cycle, or changes with the patient's respiratory cycle). automatic pressure-regulated ventilation that changes based on patient monitoring). This non-invasive positive pressure ventilation therapy is also commonly used for obstructive sleep hypopnea, upper airway resistance syndrome, or congestive heart failure.

The ventilation equipment provided by this application may include a respiratory mask and a ventilator, and may perform ventilation treatment on the user, such as the above-mentioned non-invasive positive pressure ventilation treatment. During use, the respirator is worn on the user's face, and the ventilator is connected to the respirator through the connecting pipe, so that the gas generated by the ventilator is delivered to the user through the connecting pipe and the respirator.

Among them, the ventilator and the connecting pipeline connecting the ventilator and the respiratory mask can refer to the content in the prior art. This application is not limited to this, as long as the gas with preset pressure and flow rate can be generated according to the actual use requirements, and the gas can be The gas is delivered to the breathing mask through the connecting tube.

The respirator may include a headgear tube that partially surrounds the user's head when the respirator is worn by the user. For example, the headband tube is bent into a U shape, the curved part of the U shape is placed on the top of the user's head, one leg of the U shape is located on the left side of the user's face, and the other leg is located on the right side of the user's face.

During the application process, it was found that the length of the headband tube in the prior art is fixed, but different users have different head sizes. This results in that when the size of the user's head is larger, the headband tube becomes tighter after being worn. When the size of the user's head is smaller, the headband tube becomes looser after being worn. That is, when the size of the user's head does not match the size of the headgear tube, it will lead to a poor wearing experience of the respirator, and especially when the headgear tube is worn loosely, it will affect the sealing between the interface component and the user's face, thus affecting the use of the respirator. performance.

In view of this, the headband tube in the embodiment of the present application includes a headband part and a connecting part. The headband part is at least partially worn on the top of the user's head. The connecting part is connected with the interface component, and the headband part and the connecting part are connected by a passage located on the user's head. The first bending part on the left side is connected with the second bending part located on the right side of the user's head, and the bending angles of the first bending part and the second bending part are toward the back of the user's head.

The respiratory mask also includes a strap, which is used to be worn behind the user's head. The first end of the strap is connected to the first bending part, and the second end of the strap is connected to the second bending part. The length of the strap can be adjusted to adjust the bending angle of the first bending part and the second bending part and the front and back positions of the first bending part and the second bending part on the user's head.

Figure 1 is a simplified diagram 1 of the respiratory mask embodiment provided by the present application after being worn, and Figure 2 is a simplified diagram 2 of the respiratory mask embodiment provided by the application after being worn. Among them, the size of the user head in Figure 1 is larger, and the size of the user head in Figure 2 is smaller. As shown in Figures 1 and 2, the position on the user's face for wearing the interface component is simplified as point A, the position on the top of the user's head for wearing the headband part 11 in the headband tube is simplified as point B, and the position on the back of the user's head for wearing is simplified as point B. The position of the strap is simplified to point C. The interface component at point A, the headband portion at point B and the strap at point C are connected through a first bending portion located on the left side of the user's head, where the first bend The part is simplified to point O in Figure 1 and point O' in Figure 2. The part where the connection part is located on the left side of the user's head is simplified into a line segment AO (AO'), and the part where the headband part is located on the left side of the user's head Simplified to the line segment BO (BO'), in addition, the interface component at point A, the headband portion at point B and the strap at point C are also connected through the second bending portion located on the right side of the user's head. For simplicity Views, not shown in Figures 1 and 2.

As shown in Figure 1, when the size of the user's head is larger, the straight-line distance between point A and point B is larger, and the position of point O is adjusted by the expansion and contraction of the strap to be at the position shown in Figure 1, that is, line segment AO When there is a certain angle with the line segment BO, the interface component 20 can be tightly connected to point A and the headband portion can be tightly connected to point B. As shown in Figure 2, when the size of the user's head is small, the straight-line distance between point A and point B is small. Since the sizes of line segment AO and line segment BO are certain, in order to make the interface components tightly connected at point A and the head The strap is tightly connected to point B. It is necessary to tighten the strap so that the first bending part moves from point O in Figure 1 toward the back of the user's head to point O' in Figure 2. At this time, select the segment AO and line The angle between segments BO is reduced.

For example, the first bending portion and the second bending portion may be located between the top of the head and the ears. For example, the connecting portion extends from the lower end of the nose through the face to between the ears and the top of the head, and the headband portion extends from the top of the head in a generally downward direction to between the ears and the top of the head, and is then connected through the first bending portion and the second bending portion. . The position between the top of the head and the ears has a large space for movement in the front and rear direction. After the first bending part and the second bending part are arranged between the top of the head and the ears, the first bending part and the second bending part can be moved along the The large movement in the front and rear direction increases the bending angle range between the headband part and the connecting part, so that the respirator mask can adapt to a wider range of user head sizes.

In the respiratory mask provided by this application, by adjusting the strap length, the headband part and the connecting part can be relatively bent through the first bending part and the second bending part, thereby adjusting the fixed position of the headband tube on the user's head. And the angle between the headband part and the connecting part can meet the wearing comfort and experience of users with different head sizes, while ensuring the sealing of the interface component in contact with the user's face, ensuring the effectiveness of the respiratory mask. When the size of the user's head is larger, the strap can be relatively elongated, so that the first bending portion and the second bending portion are relatively forward on the side of the user's head, and the bending angle is larger, thereby maintaining the interface assembly. And the headband tube can be tightly connected to the user's head. When the size of the user's head is small, the strap can be relatively contracted, so that the first bending part and the second bending part are positioned relatively behind the side of the user's head, and the bending angle is small, so that the interface component and the head The strap tube can be tightly connected to the user's head.

The respiratory mask provided by the present application will be described in detail below with reference to specific embodiments.

Embodiment 1

Figure 3 is an isometric view of the respirator in Embodiment 1, Figure 4 is a front view of the respirator in Embodiment 1, and Figure 5 is a left view of a respirator in Embodiment 1. As shown in Figures 3 to 5, the respiratory mask includes an interface assembly 20, a headgear tube and a strap (not shown in the figures). The headband tube includes a headband part 11 and a first connecting part 12. The headband part 11 is at least partially worn on the top of the user's head. The first connecting part 12 is connected with the interface assembly 20, and the headband part 11 and the first connecting part 12 are located at The first bending part on the left side of the user's head is connected to the second bending part on the right side of the user's head, and the bending angles of the first bending part and the second bending part are toward the back of the user's head.

Wherein, the first bending part and the second bending part may include a bending tube, and a side of the bending tube facing in front of the user's head is provided with a recessed structure 13 that is recessed into the inside of the bending tube, and the bending tube faces behind the user's head. There is no recessed structure 13 on one side.

The bent tube is bent at the recessed structure 13 . For example, the recessed structure 13 may be V-shaped, and the two side walls of the V-shape are relatively close to each other when bent. Of course, the recessed structure 13 may also be arc-shaped, etc., and the shape of the recessed structure 13 is not limited in this application.

The side of the bending tube facing behind the user's head does not contact the recessed structure 13 during bending to prevent the ventilation area in the bending tube from being reduced or even blocked.

A plurality of recessed structures 13 may be provided on the side of the bending tube facing the front of the user, and the plurality of recessed structures 13 may be spaced apart along the length of the headband tube. The bent tube has different maximum bending angles according to the structure of the recessed structure 13. For example, when the recessed structure 13 is V-shaped, the maximum bending angle of the bent tube is the included angle of the V-shape. The bending tube cannot be bent further after the bending angle reaches the maximum bending angle. For example, after the two side walls of the V-shaped recessed structure 13 are in contact, the bending tube cannot be bent further. After multiple recessed structures 13 are provided, the bending angle of the bending tube can be the sum of the maximum bending angles of the multiple recessed structures 13, which increases the maximum bending angle of the bending tube and makes the adjustment of the headband tube more flexible. .

For example, a plurality of recessed structures 13 may be closely arranged and formed into a corrugated shape as a whole.

The bending modulus of the side of the bending tube facing the front of the user is smaller than the bending modulus of the side of the bending tube facing behind the user's head. The smaller the bending modulus, the easier it is to bend. Setting the bending modulus of the side of the bending tube facing the front of the user to be smaller can make the bending tube easier to bend. Setting the bending modulus of the side of the bending tube toward the rear of the user to be larger allows the bending tube to maintain its shape, thereby preventing the side of the bending tube from bending toward the rear of the user and causing the internal airflow channel to be blocked.

Of course, in order to facilitate processing, the bending modulus of the front and rear sides of the bent tube can also be the same.

The cross-section of the headband tube can be oval, track-shaped or D-shaped to increase the user's wearing comfort. The width of the part of the headband tube close to the interface component 20 can be set smaller so that the headband tube can be placed to block the user's line of sight and improve the user's wearing experience. The width of the portion of the headband tube close to the top of the head can be set larger to increase the contact area between the headband tube and the head, thereby improving wearing comfort.

The headgear tube can be made of flexible materials such as silicone, fabric, etc.

The headband tube communicates with the connecting pipeline. For example, the headband portion 11 in the headband tube communicates with the connecting pipeline. Wherein, the headband tube can be connected to the connecting pipe through the elbow 40 . The elbow tube 40 and the headband tube may be of an integrated structure or may be of a separate structure. When the elbow tube 40 and the headband tube have separate structures, the elbow tube 40 is connected to the headband tube through the intermediate piece 41 .

The material of the middleware 41 may be PP, PC, etc. The mating surface of the elbow 40 and the middle piece 41 can be a cylindrical surface (the cylinder can have a certain slope) or a spherical surface, so as to realize the connection between the elbow 40 and the middle piece. Relative rotation of the intermediate piece 41. When the mating surface is a spherical surface, the elbow 40 has a ball head. When the mating surface is a spherical surface, the elbow 40 has a greater degree of freedom. The middle piece 41 and the headband tube may be detachable or integrally formed. If the one-piece molding method is adopted, a hole can be provided in the middle piece 41, and the matching elbow 40 is also equipped with a hole or a groove. When extruding or twisting, the hole of the middle piece 41 is in contact with the hole or groove of the elbow 40. There is always an overlap, which ensures the passage of gas and thus the therapeutic effect.

The material of the elbow 40 can be, but is not limited to, PP, PC, etc. The elbow 40 is provided with a buckle for connecting a 22mm standard connector. Of course, the connector is not limited to 22mm connectors. It can be a conical connector with a smaller diameter. On the premise of ensuring that the air path is connected, it can also be other customized or irregular shapes. An exhaust hole may also be provided in the elbow 40.

The strap is used to be worn behind the user's head, and the first end of the strap is connected to the first bending part, and the second end of the strap is connected to the second bending part. Specifically, in this embodiment, the first end of the strap is connected to the bending tube located on the left side of the user's head, and the second end of the strap is connected to the bending tube located on the right side of the user's head, so that the strap can be The strap, the headgear portion 11 and the interface assembly 20 form three connection points that are connected to each other to fasten the respiratory mask on the user's head.

The length of the strap is adjusted to adjust the bending angle of the first bending part and the second bending part and the front and back positions of the first bending part and the second bending part on the user's head. Specifically, in this embodiment, the strap can expand and contract to adjust the bending angle of the bending tube and the position of the bending tube at the front and back of the user's head. For example, when the size of the user's head is larger, the straps are relatively elongated, bringing the bending tube closer to the front of the user and the bending angle increases; when the size of the user's head is smaller, the straps are relatively contracted, bringing the bending tube closer to the user. rear and the bending angle is reduced.

The strap may be an elastic strap. The elasticity of the strap allows the strap to automatically expand and contract according to the size of the user's head, thereby realizing automatic adjustment of the bending angle and position of the first bending part and the second bending part. For example, the strap may include a highly elastic rubber material or fabric material.

Of course, the straps can also be manually retracted through buckles or Velcro.

The first bending portion and the second bending portion are provided with a protruding piece 14 on the side facing the rear of the user, and the strap is connected to the protruding piece 14 . For example, a protruding piece 14 is provided on the side of the bending tube facing the rear of the user. The protruding piece 14 is in the form of a thin sheet with a through hole 15 opened thereon. The strap passes through the through hole 15 and is connected to the protruding piece 14 . The tab 14 facilitates the connection between the strap and the headgear tube.

Among them, the protruding piece 14 and the bent tube can be integrally formed to reduce the number of parts.

The interface component 20 is used to be worn on the user's face to communicate with the user's respiratory airway. respiratory airway Refers to the user's mouth or nose. According to the connection between the interface component 20 and the user's mouth and nose, the respiratory mask can be divided into a nasal mask, an oronasal mask, etc. The interface assembly 20 also communicates with the headgear tube.

Interface assembly 20 may include a frame and a pad. The frame may be a rigid shell, fixed on the user's face (for example, fixed on the user's face through a strap), and together with the user's face, form a cavity connected to the user's respiratory airway. The pad is positioned between the user's face and the frame to increase the seal between the frame and the user's face. A cavity can be provided inside the pad to increase the elastic deformation of the pad, thereby improving the sealing between the frame and the user's face while improving wearing comfort. The material of the gasket can be silicone, PP, PC, etc.

FIG. 6 is a schematic diagram 1 of the safety valve seat 30 in an embodiment of a respirator mask provided by this application. FIG. 7 is a schematic diagram 2 of the safety valve seat 30 in an embodiment of a respirator mask provided by this application. As shown in Figures 6 and 7, the interface assembly 20 may also include a safety valve seat 30 connected to the frame, and the number of the safety valve seats 30 may be 2, 3, 4, etc. The connection between the safety valve seat 30 and the frame may be a detachable connection (eg, buckle connection) or a non-detachable connection (eg, ultrasonic connection, bonding, etc.).

The safety valve seat 30 can be made of hard material, such as PP, PC, etc. A valve cavity 33 is formed in the safety valve seat 30, and the valve cavity 33 is connected with the cavity surrounded by the frame. The safety valve seat 30 may also be provided with a connection port 34 that communicates with the valve cavity 33. The connection port 34 is connected to the first connection part 12 of the headgear tube to realize communication between the headgear tube and the frame cavity. Wherein, the headgear tube and the safety valve may be detachably connected or non-detachably connected.

The safety valve seat 30 may be provided with a snap connection 31 . For example, two safety valve seats 30 are connected to the frame, and the strap also includes a third end and a fourth end connected to the buckle connection part 31 to make the interface assembly 20 more closely connected to the user's face. Among them, the strap and the buckle connection part 31 can be connected by a buckle to realize quick installation or release of the safety valve seat 30 and the strap.

The safety valve seat 30 may also be provided with a mounting hole 32 and a vent hole 35, and a valve plate is installed in the mounting hole 32. When the ventilator outputs gas, the valve plate covers the vent hole 35; when the ventilator is not working, the valve plate moves away from the vent hole 35, and the vent hole 35 opens, allowing the valve cavity 33 to communicate with the external space, thereby reducing the risk of carbon dioxide rebreathing. situation occurs. For example, the valve plate does not cover the ventilation hole 35 in its natural state, and the valve cavity 33 is connected to the external space. When the ventilator outputs gas, the valve plate is blown to the position of the vent hole 35 by the gas entering the safety valve seat 30, thereby covering the vent hole 35 to isolate the valve cavity 33 from the external space.

The valve plate can be made of flexible materials such as silicone or rigid materials such as plastic. The connection position between the valve plate and the safety valve seat 30 forms a rotating shaft, and the valve plate rotates around during operation to block and release the vent hole 35 .

The exhaust hole can be set on the valve plate, interface component or elbow. By adjusting the position of the exhaust hole, the noise can be reduced and the airflow can be avoided.

Embodiment 2

The main difference between this embodiment and Embodiment 1 is that the first bending part and the second bending part may include hinge joints 16 , and the relative bending of the headband part 11 and the first connecting part 12 is achieved through the hinge joints 16 . An air flow channel is provided inside the hinge joint 16 , and the air flow channel is connected to both the headband part 11 and the first connecting part 12 .

Figure 8 is a schematic diagram 1 of a hinged joint 16 of the respirator in Embodiment 2. Figure 9 is a schematic diagram 2 of a hinged joint 16 of the respirator in Embodiment 2. Figure 10 is a schematic diagram of a hinged joint 16 of the respirator in Embodiment 2. Sectional view of 16.

As shown in FIGS. 8 to 10 , the hinged joint 16 may include a first pipe 16a and a second pipe 16b. The first pipe 16a is rotatably sleeved on the outer wall of the second pipe 16b; the first pipe 16a and the headgear 11 The second pipe 16b communicates with the first connecting part 12; or the first pipe 16a communicates with the first connecting part 12, and the second pipe 16b communicates with the headband part 11. The first joint 16a and the second joint 16b are rotatably sleeved, so that the rotatable angle of the first joint 16a and the second joint 16b is larger, thereby making the adjustment of the respiratory mask more flexible.

Exemplarily, the first take-over 16a and the headband part 11 have an integral structure, and the second take-over 16b and the first connecting part 12 have an integral structure; or the second take-over 16b and the headband part 11 have an integral structure, and the first take-over 16a It is an integral structure with the first connecting part 12 . This reduces the number of parts.

Of course, the first pipe 16a, the second pipe 16b and the headgear tube can also be of separate structure.

The hinge joint 16 can also be a ball joint, which can also realize the bendable connection between the headband portion 11 and the first connecting portion 12 . Correspondingly, an airflow channel is also provided in the ball joint, and the airflow channel is connected to both the headband part 11 and the first connecting part 12 .

It should be noted that Embodiment 1 and Embodiment 2 can be combined. For example, the first bending part includes a bending tube, and the second bending part includes a hinge joint 16; or, the first bending part includes a hinge joint 16, and the second bending part includes a bending tube.

In addition, in order to make the respirator adapt to different head sizes of users, the relevant technology center The split respirator has a headgear tube configured as a retractable structure. For example, corresponding to the headband part in the present application, the headband tube in the related art is configured as a bellows structure. When the respirator is worn on a user with a larger head size, the bellows extends, and when the respirator is worn on a user with a smaller head, the bellows shortens, thereby adapting to the heads of different users through the expansion and contraction of the bellows. part size.

During the expansion and contraction process of the bellows, the headband tube may bend in a small range due to the softness of the material of the headband tube itself and the structure of the bellows tube. It should be noted that this small range of bending is only to adapt to the shape of the user's head during the expansion and contraction of the headband tube. In other words, the small-scale bending that occurs in the bellows is passive bending during the expansion and contraction process. The principle behind its ability to adapt to different head sizes is that the headband tube is retractable.

Different from the related art, in this application, the relative bending between the headband part and the connecting part is realized through the first bending part and the second bending part, so that the points on the headband part that are in contact with the user and the interface component are The distance between the points of contact with the user changes, and the bending between the headband part and the connecting part is active bending, which is an active adjustment to adapt to different user head sizes.

In this application, by arranging bending tubes, hinged joints, etc., large-angle bending can be achieved, thereby meeting the actual wearing comfort requirements of users with different head sizes and the sealing requirements of the respiratory mask.

The respiratory mask and ventilation treatment equipment provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios.

Referring to Figures 11 to 15, an embodiment of the present application provides a respiratory mask, including: a liner 10, a headgear tube 20 and a rear headband; the liner 10 includes opposite first and second sides. , the first side has a ventilation cavity for accommodating the patient's mouth and/or nose, the pad 10 is provided with at least one opening, the opening is in communication with the ventilation cavity; the headgear tube 20 Communicated with the opening, the headband tube 20 is used to fix the pad 10 at an effective treatment position on the patient's face and transmit airflow to the ventilation cavity through the opening; the headband The tube 20 surrounds both sides of the patient's face and at least part of the top of the head during use. The headgear tube 20 is provided with at least two second connecting portions 300 near the patient's left and right ears. The second connecting portion 300 is arranged along the length direction of the headgear tube 20; the back headband surrounds at least part of the patient's back of the head, and both ends of the back headband are respectively connected to the second connecting portion. 300.

Specifically, as shown in Figures 11 to 15, the respiratory mask includes a pad 10, a headgear tube 20 and a back headgear. The pad 10 usually contains a flexible material, such as silicone material, and is used to fit in with the patient's face. Provides better fit. The pad 10 includes opposite first and second sides. When the patient wears the respiratory mask, the first side of the pad 10 is the side close to the patient's face, and the second side of the pad 10 is away from the patient's face. one side. The first side of the pad 10 has a ventilation cavity that accommodates the patient's mouth and/or nose. The liner 10 is provided with at least one opening, which is connected to the ventilation cavity. Air flow can be introduced into the ventilation cavity through the opening to maintain the positive pressure inside the ventilation cavity to achieve treatment of the patient. A material with greater strength can be provided on the second side of the liner 10 to support the liner 10 and avoid significant deformation of the liner 10 .

The headgear tube 20 may be made of flexible material, which may be but not limited to silicone, fabric, etc. The headband tube 20 has a hollow tubular structure and is connected with the opening of the pad 10 . The headgear tube 20 mainly has the following two functions: first, the headgear tube 20 surrounds both sides of the patient's face and at least part of the top of the head during use, and can fix the pad 10 at an effective treatment position on the patient's face; second, The headgear tube 20 is connected to the pipeline at the ventilator end and transmits the airflow into the ventilation cavity through the opening.

The headgear tube 20 surrounds both sides of the patient's face, and is provided with at least two second connection parts 300 near the patient's left and right ears. The second connection part 300 is near the patient's left ear and the second connection part 300 is near the patient's right ear. The second connection part 300 may be arranged symmetrically. At least two second connecting portions 300 are arranged along the length direction of the headband tube 20 , which is the gas flow direction. The back headband surrounds at least part of the patient's back head, and two ends of the back headband are connected to the second connecting portion 300 respectively. By providing at least two second connecting portions 300 on the headgear tube 20 close to the left and right ears of the patient, the connection position of the rear headgear on the headgear tube 20 can be changed, so that the two can cooperate to achieve the desired effect according to the patient's head size. adaptive adjustment. The back headband can be made of fabric, foam and other materials. By adjusting the tightness of the back headband and the connection position on the headband tube 20, the position of the respiratory mask on the patient's face and the fit of the pad 10 to the patient's face can be adjusted. the degree of closeness.

Figures 11 and 12 are left views of the patient's cheek. The breathing mask is worn as follows: extending from the lower end of the patient's nose through the face to the top of the head. That is, when the patient wears the mask, it is composed of the cushion 10 and the headgear tube 20 The circumference is used for matching and fixing. The lower end of the nose can be defined as point A, the position of the top of the head as point B, and the position of the back of the head with the occipital bone as point C. Three points A, B, and C form a triangular positioning shape to fix the mask on the patient's head. At the same time, the headband tube 20AB is simplified as AO and BO. Point O is the position of the second connecting part 300, that is, the position where the rear headband and the headband tube 20 are combined. Therefore, AO is corresponding to the headband tube 20 below the second connecting part 300. Part, BO corresponds to the part of the headband tube 20 above the second connection part 300, and the rear headband is simplified as a line segment CO. For example, if a patient with a relatively small head circumference wears a suitable mask, the matching positions are the top of the patient's head (point B) and the lower edge of the nose (point A). Point A is the most important to ensure sealing. Shape ruler inch, connect the back headband to the second connecting part 300 in the middle position among the three second connecting parts 300 as shown in Figure 15. This is the most suitable position for wearing. In addition, for example, the most comfortable position for wearing can be Measured by the angle between the rear headband and the horizontal (i.e., the angle between the CO extension line and the horizontal line), the angle between the optimal position at this time is α, and the headband tube 20 extends generally along the lower edge of the nose to the top of the head (point B) and the lowest point of the back headband (point C). As shown in Figure 12, when a patient with a larger head circumference wears a mask of the same specifications, the back headband should be relaxed while maintaining the same fitting position (point A seals the mouth and nose). The original second connecting part 300 will move upward relative to the position of the original headband tube 20. If you want to maintain the original rear headband angle α, (if the position of the second connecting part 300 is not adjusted, the rear headband angle at this time is β, β > α, it is necessary to adjust the position of the second connection part 300 to adjust the angle of the back headband back to the optimal position. The second connecting part 300 in the middle position is adjusted to be connected to the second connecting part 300 at the bottom. By tightening the rear headband and adjusting the position of the second connecting portion 300, the mask can be worn and fixed as a whole, so that the wearing position of the headband can be adjusted simply and conveniently to suit the heads of different patients.

In the embodiment of the present application, the respiratory mask includes: a liner 10, a headgear tube 20 and a rear headgear; the liner 10 includes opposite first and second sides, the first side having a mouth for accommodating a patient and/or In the ventilation cavity of the nose, the pad 10 is provided with at least one opening, and the opening is connected to the ventilation cavity; the headgear tube 20 is connected to the opening, and the headgear tube 20 is used to fix the pad 10 to an effective treatment position on the patient's face, and The airflow is transmitted to the ventilation cavity through the opening; the headgear tube 20 surrounds both sides of the patient's face and at least part of the top of the head during use, and the headgear tube 20 is provided with at least two second connections near the left and right ears of the patient. 300, at least two second connecting parts 300 are arranged along the length direction of the headband tube 20; the back headband surrounds at least part of the patient's back of the head, and both ends of the back headband are respectively connected to the second connecting parts 300. By adjusting the connection position of the rear headband and the headband tube 20 and the tightness of the rear headband, the respiratory mask can be worn and fixed, thereby simply and conveniently adjusting the wearing position of the headband to suit patients with different head circumferences, which greatly improves Respiratory mask versatility and comfort.

Optionally, both ends of the back headband are respectively provided with snap-in portions or hinge portions, and the snap-in portions are snap-connected with the second connection portion 300, or the hinge portions are connected with the second connection portion 300. 300 degrees of articulation.

Specifically, the rear headband is assembled with the headband tube 20 through the second connecting part 300, thereby positioning and fixing the respiratory mask on the patient's face and head. The rear headband and the headband tube 20 can be assembled by hinged, pinned or clamped joints. In the embodiment of the present application, the two ends of the back headband can be respectively provided with snap-in parts, and the snap-in fit between the snap-in parts and the second connection part 300 can be used to realize the back headband. The quick disassembly and position adjustment of the headgear tube 20 greatly improves the adjustment efficiency of the respiratory mask.

Optionally, as shown in FIGS. 13 and 15 , the second connecting part 300 is a hole-shaped structure, the engaging part is a buckle, and the buckle is engaged with the hole-shaped structure.

Specifically, as shown in Figures 13 and 15, the rear headband and the headband tube 20 are assembled in a snap-fit manner. The second connecting portion 300 can be a hole-like structure, and the hole-like structure can be directly formed on the headband tube 20. On the side wall, an extension structure can also be provided on the headband tube 20, and a hole-like structure is formed on the extension structure to avoid affecting the strength and ventilation effect of the headband tube 20. The two ends of the back headband are provided with buckles, and the shape of the buckles matches the hole structure. By utilizing the plug-in connection between the buckle and the hole structure, the rear headband and the headband tube 20 can be quickly disassembled and assembled. In order to ensure the stability of the connection between the rear headband and the headband tube 20, there is a certain amount of interference between the buckle and the hole structure, and the shaft is inserted into the hole structure using an interference fit.

In addition, the two ends of the back headband can also be directly inserted into the hole structure to fix the back headband. The two ends of the rear headband can be provided with reusable adhesive structures, such as Velcro. After the two ends of the rear headband pass through the hole structure, they can be wrapped around the side wall of the headband tube 20 for at least one week, and then the Velcro can be used to achieve the purpose. Paste to fix.

Optionally, as shown in FIGS. 16 to 18 , the second connecting part 300 is a protruding structure, the clamping part is a sleeve, and the sleeve is sleeved on the protruding structure.

Specifically, as shown in FIGS. 16 to 18 , the second connecting part 300 can also be a convex structure. The convex structure can be directly formed on the side wall of the headband tube 20 , or an extension structure can be provided on the headband tube 20 , a protruding structure is provided on the extension structure to avoid affecting the strength and ventilation effect of the headband tube 20 . There are sleeves at both ends of the back headband. The sleeves can be made of flexible or rigid materials. For example, the sleeves can be made of rigid materials such as stainless steel or ceramics, or they can be made of the same flexible material as the back headband. The sleeve is placed on the protruding structure for assembly, and the cooperation between the sleeve and the protruding structure enables quick disassembly and assembly of the rear headband and the headband tube 20 .

In addition, the two ends of the back headband can also be directly wrapped around the protruding structure to fix the back headband. The two ends of the back headband can be provided with reusable adhesive structures, such as Velcro. The two ends of the back headband are wrapped around the convex structure for at least one week, and then the Velcro is used to achieve adhesive fixation.

Optionally, as shown in FIGS. 16 to 18 , the protruding structure extends toward the patient's nose.

Specifically, as shown in Figures 16 to 18, when the patient wears the respirator mask, the back headband is located on the back of the patient's head, the convex structures are located on both sides of the patient's face, and the two ends of the back headband are set on the convex structures. The raised structure extends toward the patient's nose, that is, the raised structure extends toward the side away from the rear headgear. stretch. When the sleeve of the rear headband is placed on the raised structure, a part of the rear headband is wound around the side wall of the headband tube 20, so that the sleeve is not easily detached from the raised structure, and the connection between the rear headband and the headband tube 20 is improved. stability.

Optionally, there is a gap between adjacent protruding structures.

Specifically, there is a gap between the protruding structures, so that the two ends of the back headband can be directly wrapped around the protruding structures to fix the back headband. The two ends of the back headband can be provided with reusable adhesive structures, such as Velcro. The two ends of the back headband are wrapped around the convex structure for at least one week, and then the Velcro is used to achieve adhesive fixation.

Optionally, as shown in FIGS. 13 to 18 , at least one valve seat 40 is provided on the second side of the pad 10 , the valve seat 40 is opposite to the opening, and the headgear tube 20 is connected to the opening. The valve seat 40 is detachably connected; the valve seat 40 is provided with a valve hole and a valve plate, and the valve hole is connected to the outside world; the valve plate is arranged opposite to the valve hole and is connected to the valve seat 40; The valve plate has a first position and a second position relative to the valve seat 40; when the valve plate is in the first position, the valve plate is engaged with the valve hole, and the ventilation cavity is in Relatively sealed state; when the valve plate is in the second position, the valve plate is separated from the valve hole, and the ventilation cavity communicates with the outside world through the valve hole.

Specifically, as shown in Figures 13 to 18, the gasket 10 can be configured with a matching position of the valve seat 40. The valve seat 40 and the gasket 10 can be but not limited to buckle connection (detachable structure), ultrasonic connection, bonding ( non-detachable structure), etc. The number of valve seats 40 may be, but is not limited to, 2, and may also be multiple, such as 3, 4, etc. The number shown in FIG. 13 is 2.

In the embodiment of the present application, the respiratory mask is an oronasal mask, which will cover the patient's mouth and nose during ventilation. In order to improve the safety factor of the respiratory mask, a valve seat 40 is provided on the second side of the liner 10, and the valve seat 40 is connected to the opening. Relative settings. The headgear tube 20 and the valve seat 40 are detachably connected, specifically through interference fit or clamping.

The valve seat 40 is provided with a valve hole and a valve plate, and the valve plate and the valve hole are arranged oppositely. The valve plate is connected to the valve seat 40 by hinged or sliding connection. The valve plate has a first position and a second position relative to the valve seat 40, and the valve plate can be switched between the first position and the second position by rotating or sliding. When the valve plate is in the first position, the valve plate is engaged with the valve hole to block the valve hole so that the valve hole is in a closed state to achieve the purpose of sealing the ventilation cavity. The ventilation device passes gas into the ventilation cavity through the openings on the headgear tube 20 and the pad 10, and generates positive pressure in the ventilation cavity to treat the patient. When the valve plate is in the second position, the valve plate is separated from the valve hole, the valve hole is in an open state, and the ventilation cavity is connected to the outside world through the valve hole to ensure the safety of the patient.

Optionally, the gasket 10 and/or the valve seat 40 are provided with an exhaust structure, and the ventilation cavity is connected to the outside through the exhaust structure.

Specifically, the respiratory mask is also provided with an exhaust structure, and the ventilation cavity is connected to the outside through the exhaust structure. The exhaust gas exhaled by the patient can be discharged to the outside through the exhaust structure to achieve gas circulation inside the ventilation cavity. Since the elbow interface on the front of the respirator is eliminated, the front space of the respirator is liberated, and the position of the exhaust structure is more diverse. The exhaust structure can be set on the gasket 10 or the valve seat 40 according to the needs, or both at the same time. Exhaust structures are provided on both the gasket 10 and the valve seat 40 .

Optionally, referring to Figures 13 to 18, the headgear tube 20 is provided with a pipeline joint 50 near the top of the patient's head, and the pipeline joint 50 is used to connect the air supply pipeline; the pipeline joint An exhaust structure is provided on 50, and the ventilation cavity is connected to the outside through the exhaust structure.

Specifically, as shown in FIGS. 13 to 18 , the upper part of the headgear tube 20 is in contact with at least part of the patient's head. A pipeline joint 50 is provided on the headgear tube 20 near the patient's head. The pipeline joint 50 is used to connect the water supply. Air line. One end of the gas supply pipeline is connected to the pipeline joint 50, and the other end is connected to positive pressure ventilation equipment such as a ventilator, oxygen cylinder, and oxygen generator.

By arranging the pipe joint 50 on the upper part of the headgear tube 20, the pipe joint 50 does not occupy the front space of the respiratory mask. The air supply pipeline transports oxygen into the ventilation cavity through the pipeline joint 50, which replaces the solution of setting an elbow interface on the front frame of the respiratory mask, frees up the front space of the respiratory mask, facilitates the installation of the exhaust structure, and reduces the manufacturing cost of the respiratory mask. difficulty and manufacturing costs. The exhaust structure can also be arranged on the pipeline joint 50 to avoid occupying the front space of the respiratory mask. Since the pipeline joint 50 is located on the patient's head, the exhaust structure is arranged on the pipeline joint 50, which can also reduce the problem of blowing the bed partner. .

An embodiment of the present application also provides a ventilation treatment device, including the above-mentioned respiratory mask.

Specifically, ventilation therapy equipment includes control devices, oxygen therapy devices, ventilators and other positive pressure ventilation equipment, and gas pipelines. The control device is used to control oxygen supply, working time, etc. The control device can be an electronic device or an electronic device. A component in a device, such as an integrated circuit or chip. The electronic device may be a terminal or other devices other than the terminal. For example, the electronic device may be a mobile phone, a tablet computer, a notebook computer, a handheld computer, a mobile Internet device, a robot, a wearable device, etc., which are not specifically limited in the embodiments of this application.

In the embodiment of the present application, the ventilation treatment device adopts the above-mentioned respiratory mask. The respiratory mask includes: a liner 10, a headgear tube 20 and a back headband; the liner 10 includes an opposite first side and a second side, The first side has a ventilation cavity for accommodating the patient's mouth and/or nose, the pad 10 is provided with at least one opening, and the opening is communicated with the ventilation cavity; the headgear tube 20 is connected with the opening, and the headgear tube 20 is used to connect the patient's mouth and/or nose. The pad 10 is fixed at an effective treatment position on the patient's face and transmits airflow to the ventilation cavity through the opening; the headgear tube 20 surrounds both sides of the patient's face and at least part of the top of the head during use, and the headgear tube 20 is close to the patient's left and right sides. At least two second connection parts 300 are provided at the right ear, and the at least two second connection parts 300 are arranged along the length direction of the headband tube 20; the back headband surrounds at least part of the patient's back of the head, and both ends of the back headband are respectively connected to the second connection part 300. By adjusting the connection position of the rear headband and the headband tube 20 and the tightness of the rear headband, the respiratory mask can be worn and fixed, thereby simply and conveniently adjusting the wearing position of the headband to suit patients with different head circumferences, which greatly improves Respiratory mask versatility and comfort.

In addition, non-invasive positive pressure ventilation is widely used for the auxiliary treatment of obstructive sleep apnea, chronic obstructive emphysema and other conditions. It does not require surgical insertion of a tube into the patient's airway, but uses a blower to pass through the airway. Tubing and patient interface devices deliver a continuous pressure ventilation or a variable pressure ventilation to the patient's airway (e.g., bilevel pressure that changes with the patient's breathing cycle, or automatic pressure ventilation that changes with patient monitoring) . This type of pressure-supported therapy is also commonly used for obstructive sleep hypopnea, upper airway resistance syndrome, or congestive heart failure.

Ventilation equipment includes mask systems and blower equipment. The mask system may include a respiratory mask (eg, nasal mask, oronasal mask, nasal pillow mask, full face mask, etc.) worn on the patient's face and in communication with the patient's airway, and a headgear tube connecting the respiratory mask and the blower device. During the treatment process, the blowing equipment outputs a positive pressure airflow, which is delivered to the patient's airway through the headgear tube and breathing mask in turn.

Among them, a respirator usually includes a frame, a pad, and a bent tube. The frame can be a rigid shell that is secured to the patient's face via a headgear. The pad is positioned between the patient's face and the frame to increase the seal between the frame and the patient's face. A cavity can be provided inside the pad to increase the elastic deformation of the pad, thereby improving the sealing between the frame and the patient's face while improving wearing comfort. The elbow is connected to one end of the headgear tube so that the space surrounded by the frame and the patient's face is connected to the headgear tube. The other end of the headgear tube can be connected to the blower equipment via a center piece, elbow, or manifold.

During ventilation treatment, patients tend to squeeze or twist the headgear tube when moving, causing the inner walls of the headgear tube to stick together, thereby blocking the positive pressure airflow. Especially when the patient is undergoing ventilation treatment while sleeping, the patient's turning over or putting his arm on the headgear tube will cause the headgear tube to be squeezed or twisted.

In view of this, the present application provides a ventilation device. As shown in Figures 19 to 32, the inner wall of the headgear tube in the ventilation device is provided with a plurality of first protrusions 11 arranged in an array. Two adjacent first protrusions 11 are arranged in an array. First gaps 11a are provided between the protrusions 11, and a plurality of first gaps 11a are connected to form a first airflow channel extending longitudinally along the headband tube.

The headband tube can be made of flexible materials, such as silicone, foam, fabric and other materials, which will elastically deform when subjected to external force and can return to its original shape when the external force is removed. The headgear tube may also be made of a water vapor permeable and air-impermeable material to prevent large amounts of water droplets from condensing inside the headgear tube.

The first protrusion 11 is a protrusion facing the inside of the headband tube. The material of the first protrusion 11 can be the same as or different from the material of the inner wall. In actual applications, it can be flexibly selected according to the processing technology, use environment, etc. The first protrusion 11 can be made by die cutting, ultrasonic cutting or thermoforming.

When the headgear tube is squeezed, the headgear tube undergoes elastic deformation, causing the opposite sides of the inner wall of the headgear tube to gradually approach each other. Since there are a plurality of first protrusions 11 on the inner wall, when the inner wall contacts the top surface of the first protrusions 11, the first protrusions 11 support the inner wall, thereby preventing the opposite sides of the inner wall of the headband tube from continuing to approach and preventing the headband tube from approaching. Fit the inner wall of the tube. And a first airflow channel extending longitudinally along the headband tube is formed between the plurality of first protrusions 11, so that the positive pressure airflow can pass through the squeezed area of the headband tube along the first airflow channel, thus solving the problem of the headband tube being squeezed. Pressure and blocking the positive pressure airflow.

It should be noted that extending the first airflow channel longitudinally along the headband tube means that the general direction of the first airflow channel is along the longitudinal direction of the headband tube, and part or all of the first airflow channel can form a certain angle with the longitudinal direction of the headband tube. .

As shown in FIGS. 19 and 20 , the inner wall of the headgear tube may include an opposite first inner wall 10 and a second inner wall 20 , and a first protrusion 11 is provided on the first inner wall 10 . The first inner wall 10 and the second inner wall 20 may be an integral structure. For example, the headgear tube is an integrally formed circular tube. A virtual plane coplanar with the central axis of the headgear tube divides the circular tube into opposite first inner walls 10 and The second inner wall 20. The first inner wall 10 and the second inner wall 20 can also be separate structures before being made into the headband tube. For example, the first inner wall 10 and the second inner wall 20 are in the form of sheets, with one side of the first inner wall 10 and one side of the second inner wall 20 The other side of the first inner wall 10 is connected with the other side of the second inner wall 20 to form a headband tube. This application does not limit the structure and forming method of the first inner wall 10 and the second inner wall 20 .

In order to increase the ventilation area when the headband tube is squeezed and deformed, and reduce the flow resistance of the positive pressure airflow, protrusions can be provided on the second inner wall 20. When the headband tube is squeezed, the first protrusion 11 and the second inner wall The protrusions on 20 are in contact, so that the distance between the first inner wall 10 and the second inner wall 20 can be increased. However, during use, the headband tube will not only be squeezed and deformed by external forces, but also sometimes torsion and deformed by external forces. Figure 21 shows an embodiment of a headband tube provided by the present application after extrusion and deformation. Schematic diagram, the direction of the arrow in the figure is the movement direction of the protrusion on the second inner wall 20 . FIG. 22 is a schematic diagram of the headgear tube shown in FIG. 21 after torsional deformation. As shown in Figures 21 and 22, relative translation occurs between the first inner wall 10 and the second inner wall 20 during twisting, so that the protrusions on the second inner wall 20 are embedded in the first gap 11a, so that the first protrusions 11 and The protrusions on the second inner wall 20 are staggered with each other, that is, the protrusions on the second inner wall 20 are embedded in the first air flow channel, causing blockage of the first air flow channel.

In view of this, the array arrangement, structure, and size of the protrusions on the first protrusion 11 and the second inner wall 20 are set to solve the problem of clogging of the first airflow channel when the headband tube is torsionally deformed. The following different scenarios are taken as examples to describe the headband tube of this application in detail.

scene one

Figure 21 is a schematic diagram of an embodiment of the headband tube provided by the present application after extrusion deformation; Figure 22 is a schematic diagram of the headband tube shown in Figure 21 after torsional deformation; Figure 23 is a headband tube provided by the present application. Schematic diagram of the embodiment after torsional deformation. As shown in Figures 21 to 23, the headgear tube includes a first inner wall 10 and a second inner wall 20 that are opposite to each other. The first inner wall 10 is provided with a plurality of first protrusions 11 arranged in an array. Two adjacent first protrusions 11 are arranged in an array. First gaps 11a are provided between the protrusions 11, and a plurality of first gaps 11a are connected to form a first airflow channel extending longitudinally along the headband tube. The second inner wall 20 is provided with a plurality of second protrusions 21 arranged in an array, and a second gap is provided between two adjacent second protrusions 21 . The height of the second protrusion 21 is smaller than the height of the first protrusion 11 .

The second protrusion 21 is a protrusion facing the inside of the headband tube. The material of the second protrusion 21 can be the same as or different from the material of the second inner wall 20. In actual applications, it can be flexibly selected according to the processing technology, use environment, etc.

Since the height of the second protrusion 21 is smaller than the height of the first protrusion 11 , the second protrusion 21 cannot contact the first inner wall 10 , so there is a gap between the top surface of the second protrusion 21 and the first inner wall 10 , allowing positive pressure airflow to pass through.

The height difference between the first protrusion 11 and the second protrusion 21 can be flexibly set according to the size of the headgear tube and the actual ventilation volume. For example, when the diameter of the headgear tube is large, the height difference between the first protrusion 11 and the second protrusion 21 21 is larger, and when the diameter of the headband tube is smaller, the height difference between the first protrusion 11 and the second protrusion 21 is smaller.

Since the heights of the first protrusion 11 and the second protrusion 21 are different, the first protrusion 11 can be processed on the first inner wall 10 and the second protrusion 21 can be processed on the second inner wall 20, and then the first protrusion 11 can be processed on the second inner wall 20. An inner wall 10 and a second inner wall 20 are connected to form a headgear tube, for example by heat fusion or bonding. This reduces the difficulty of processing the headgear tube. The first protrusion 11 and the second protrusion 21 can be made by die cutting, ultrasonic cutting or thermoforming.

In some embodiments, the projection of the second protrusion 21 on the first inner wall 10 may be less than or equal to the projection of the first gap 11a on the first inner wall 10 , and the projection of the first protrusion 11 on the second inner wall 20 may be less than or equal to The projection of the second gap on the second inner wall 20 .

The projection of the second protrusion 21 on the first inner wall 10 refers to the projection of the second protrusion 21 on the first inner wall 10 after the headband tube is deformed. For example, after deformation, the first inner wall 10 and the second inner wall 20 are parallel, and the projection of the second protrusion 21 on the first inner wall 10 is equal to the cross section of the second protrusion 21 .

The projection of the second protrusion 21 on the first inner wall 10 is less than or equal to the projection of the first gap 11a on the first inner wall 10, which means that the projected outline of the second protrusion 21 is completely included in the projected outline of the first gap 11a, not Single refers to the size relationship of the projected area.

The projection of the second protrusion 21 is less than or equal to the projection of the first gap 11a, that is to say, the second protrusion 21 can be embedded in the first gap 11a. In the same way, the first protrusion 11 can be embedded in the second gap. In this way, the first protrusion 11 and the second protrusion 21 can be embedded in each other, which can prevent the first inner wall 10 and the second inner wall 20 from continuing to shift after the headgear tube is deformed.

It should be noted that the headgear tube may undergo extrusion deformation or torsion deformation when subjected to external force, so the headgear tube includes an extrusion deformation state and a torsion deformation state. The first inner wall 10 and the second inner wall 20 are close to each other in the extrusion deformation state, and the first inner wall 10 and the second inner wall 20 are close to each other in the torsional deformation state. The first protrusion 11 and the second protrusion 21 may be facing each other in the extrusion deformation state, and may be staggered in the torsion deformation state. Of course, the first protrusion 11 and the second protrusion 21 may be staggered in the extrusion deformation state and face each other in the torsion deformation state. For convenience of description, only the first protrusion 11 and the protrusions on the second inner wall 20 that are staggered in the torsional deformation state are taken as an example for description.

Figure 23 is a schematic diagram of an embodiment of a headband tube provided by the present application after torsion deformation. As shown in Figure 23, the projections of the first protrusion 11 and the second protrusion 21 are rectangles with the same size, and the first protrusion 11 and the second protrusion 21 are arranged in the same array. The protrusions 11 and the second protrusions 21 are staggered one by one.

Of course, the projections of the first protrusion 11 and the second protrusion 21 can also be rhombus, square, triangle or other polygons. When the projection of the first protrusion 11 and the second protrusion 21 is a polygon, the shape is more regular and the processing difficulty is reduced. The projections of the first protrusion 11 and the second protrusion 21 may also be circular, elliptical, etc. The shapes of the first protrusion 11 and the second protrusion 21 may be the same or different.

When the projection of the first protrusion 11 and/or the second protrusion 21 is a polygon, the first side of the polygon is parallel to the axis of the headgear tube, and the first sides of the two adjacent polygons along the longitudinal direction of the headgear tube are collinear. The first airflow channel is connected and formed by the first gaps 11a, so the extending direction of the first gap 11a determines the flow direction of the gas in the first airflow channel. When the first side of the polygon is aligned with the axis of the headband tube When the lines are parallel, the extension direction of the first gap 11a formed by two adjacent first protrusions 11 is also parallel to the axis of the headband tube, thereby reducing the resistance to air flow. Moreover, when the first sides of the two polygons adjacent in the longitudinal direction of the headband tube are collinear, the two first gaps 11a adjacent in the longitudinal direction of the headband tube are collinear, thereby reducing the air flow resistance.

Scene 2

Figure 24 is a partial structural schematic diagram of an embodiment of a headband tube provided by this application; Figure 25 is an expanded view of the headband tube shown in Figure 24; Figure 26 shows the first protrusion and the third protrusion after torsional deformation of the headband tube. Schematic diagram of one of the layout methods. As shown in Figures 24 to 26, the headgear tube includes a first inner wall 10 and a second inner wall 20 that are opposite to each other. The first inner wall 10 is provided with a plurality of first protrusions 11 arranged in an array. Two adjacent first protrusions 11 are arranged in an array. First gaps 11a are provided between the protrusions 11, and a plurality of first gaps 11a are connected to form a first airflow channel extending longitudinally along the headband tube. The second inner wall 20 is provided with a plurality of third protrusions 22 arranged in an array, and a third gap is provided between two adjacent third protrusions 22 . The projection of the third protrusion 22 on the first inner wall 10 is smaller than the projection of the first gap 11 a on the first inner wall 10 , and the projection of the first protrusion 11 on the second inner wall 20 is smaller than the projection of the third gap on the second inner wall 20 .

The third protrusion 22 is a protrusion facing the inside of the headband tube. The material of the third protrusion 22 can be the same as or different from the material of the second inner wall 20. In actual applications, it can be flexibly selected according to the processing technology, use environment, etc.

The projection of the third protrusion 22 on the first inner wall 10 refers to the projection of the third protrusion 22 on the first inner wall 10 after the headband tube is deformed. For example, after deformation, the first inner wall 10 and the second inner wall 20 are parallel, and the projection of the third protrusion 22 on the first inner wall 10 is equal to the cross section of the third protrusion 22 .

The projection of the third protrusion 22 on the first inner wall 10 is smaller than the projection of the first gap 11a on the first inner wall 10. This means that the projected outline of the third protrusion 22 is completely included in the projected outline of the first gap 11a. It does not mean that only The size relationship of the projected area.

The projection of the third protrusion 22 is smaller than the projection of the first gap 11a. That is to say, the third protrusion 22 can be embedded in the first gap 11a or the first airflow channel, and the first gap 11a or the first airflow channel is not blocked. Completely filled, leaving gaps so that positive pressure airflow can pass through the gaps.

Among them, the projection of the third protrusion 22 in this scene is smaller than the projection of the first gap 11a means that the projection of the third protrusion 22 is much smaller than the projection of the first gap 11a, so that the space of the first gap 11a is occupied by the third protrusion 22 After being occupied, the remaining space can still meet the ventilation requirements of the headgear tube, that is, the first gap 11a is set larger. In the same way, the third gap is also set larger.

In addition, since the first gap 11a and the third gap are set larger, the number of the first protrusions 11 and the third protrusions 22 is reduced, the processing difficulty is reduced, and the headband tube does not deform. gas flow resistance.

The height of the fourth protrusion 23 may be equal to the height of the first protrusion 11 . In this way, when the headband tube is in a torsionally deformed state, the top surface of the first protrusion 11 is supported on the second inner wall 20, and the top surface of the third protrusion 22 is supported on the first inner wall 10, so that the headband tube is in the torsionally deformed state. The structure is more stable, and the ability to resist external force deformation is increased, making it difficult for the first inner wall 10 and the second inner wall 20 to continue to approach each other.

As shown in Figure 24, the first protrusion 11 and the third protrusion 22 are elliptical in shape with the same size, and the first protrusion 11 and the third protrusion 22 are arranged in the same array. After the headband tube is deformed, The first protrusions 11 and the third protrusions 22 are arranged staggeredly, and there is a gap between the first protrusion 11 and the third protrusion 22, and the positive pressure airflow can flow in the gap.

Of course, the first protrusion 11 and the third protrusion 22 can also be circular, or polygonal such as triangle, rectangle, rhombus, etc. The shapes of the first protrusion 11 and the third protrusion 22 may be the same or different.

When the projection of the first protrusion 11 and/or the third protrusion 22 is a polygon, the first side of the polygon is parallel to the axis of the headgear tube, and the first sides of the two adjacent polygons along the longitudinal direction of the headgear tube are collinear. The first protrusion 11 and the third protrusion 22 together form a channel through which the gas flow passes. Therefore, the extending direction of the sides of the first protrusion 11 and the second protrusion 21 determines the flow direction of the gas. When the first side of the polygon is parallel to the axis of the headband tube, the extending direction of the airflow channel is also parallel to the axis of the headband tube, thereby reducing air flow resistance. Moreover, when the first sides of the two polygons adjacent in the longitudinal direction of the headband tube are collinear, the two first gaps 11a adjacent in the longitudinal direction of the headband tube are collinear, thereby reducing the air flow resistance.

Scene three

Figure 27 is a schematic structural diagram of a headband tube provided by the present application; Figure 190 is a partial structural schematic diagram of the headband tube shown in Figure 27; Figure 191 is a partial structural schematic diagram of the headband tube shown in Figure 27; Figure 191 is a partial structural schematic diagram of the headband tube shown in Figure 27; Figure 30 is an expanded view of the headgear tube shown in Figure 27; Figure 31 is a partial enlarged view of Figure 30; Figure 32 is a diagram of the first protrusion and the fourth protrusion after torsional deformation of the headgear tube shown in Figure 27 A schematic diagram of an arrangement. As shown in Figures 27 to 32, the headgear tube includes a first inner wall 10 and a second inner wall 20 that are opposite to each other. The first inner wall 10 is provided with a plurality of first protrusions 11 arranged in an array. Two adjacent first protrusions 11 are arranged in an array. First gaps 11a are provided between the protrusions 11, and a plurality of first gaps 11a are connected to form a first airflow channel extending longitudinally along the headband tube. The second inner wall 20 is provided with a plurality of fourth protrusions 23 arranged in an array, and a fourth gap is provided between two adjacent fourth protrusions 23 . The projection of the fourth protrusion 23 on the first inner wall 10 is larger than the projection of the first gap 11a on the first inner wall 10 , and/or the projection of the first protrusion 11 on the second inner wall 20 It is larger than the projection of the fourth gap on the second inner wall 20 .

The fourth protrusion 23 is a protrusion facing the inside of the headband tube. The material of the fourth protrusion 23 can be the same as or different from the material of the second inner wall 20. In actual applications, it can be flexibly selected according to the processing technology, use environment, etc.

The projection of the fourth protrusion 23 on the first inner wall 10 refers to the projection of the fourth protrusion 23 on the first inner wall 10 after the headband tube is deformed. For example, after deformation, the first inner wall 10 and the second inner wall 20 are parallel, and the projection of the fourth protrusion 23 on the first inner wall 10 is equal to the cross section of the fourth protrusion 23 .

The projection of the fourth protrusion 23 on the first inner wall 10 is larger than the projection of the first gap 11a on the first inner wall 10 , which means that the projected outline of the fourth protrusion 23 at least partially protrudes from the projected outline of the first gap 11 a , that is to say The fact that the fourth protrusion 23 cannot be embedded in the first gap 11a does not only refer to the size relationship of the projected area. The projection of the first protrusion 11 on the second inner wall 20 is greater than the projection of the fourth gap on the second inner wall 20 , which means that the projected outline of the first protrusion 11 at least partially protrudes from the projected outline of the fourth gap, that is to say, the first The protrusion 11 cannot be embedded in the fourth gap. In this way, after the headband tube is deformed, the top surface of the first protrusion 11 contacts the top surface of the fourth protrusion 23 .

Since the fourth protrusion 23 cannot be embedded in the first gap 11a, the ventilation area of the first airflow channel connected by the first gap 11a is not affected, and the positive pressure airflow can flow through the first airflow channel.

It should be noted that the first gap 11a cannot be set too small to prevent the ventilation needs from being unable to be met. In actual application, it can be flexibly set according to the ventilation volume and the size of the headband tube.

The plurality of fourth gaps may be connected to form a second airflow channel extending longitudinally along the headband tube. After the headband tube is deformed, the first airflow channel and the second airflow channel jointly play the role of ventilation, increasing the ventilation area and reducing airflow resistance.

The structure and array arrangement of the first protrusion 11 and the fourth protrusion 23 may be the same. This can reduce the complexity of the structure, thereby reducing the difficulty of processing.

27 to 32 show the case where the first protrusion 11 and the fourth protrusion 23 are rhombus-shaped. Of course, the first protrusion 11 and the fourth protrusion 23 can also be triangular, rectangular or other polygonal shapes.

When projected as a polygon, the first side of the polygon is parallel to the axis of the headgear tube, and the first sides of two adjacent polygons along the longitudinal direction of the headgear tube are collinear.

The first airflow channel is connected and formed by the first gaps 11a, so the extending direction of the first gap 11a determines the flow direction of the gas in the first airflow channel. When the first side of the polygon is parallel to the axis of the headband tube, the extending direction of the first gap 11a formed by two adjacent first protrusions 11 is also parallel to the axis of the headband tube, thereby reducing air flow resistance. Furthermore, adjacent ones along the longitudinal direction of the headgear tube When the first sides of the two polygons are collinear, the two adjacent first gaps 11a along the longitudinal direction of the headband tube are collinear, thereby reducing the air flow resistance.

Similarly, the second airflow channel is formed by the fourth gap connection. The first side of the projection of the fourth protrusion 23 is parallel to the axis of the headband tube, and the first sides of the two adjacent polygons along the longitudinal direction of the headband tube. When collinear, the air flow resistance can also be reduced.

Wherein, when the projection of the first protrusion 11 and the fourth protrusion 23 on the inner wall of the headgear tube is a rhombus, the projection of the fourth protrusion 23 on the first inner wall 10 can be the same as that of at least three first protrusions 11 on the first inner wall. The projections of 10 partially overlap. That is, the fourth protrusion 23 is supported by at least three first protrusions 11 . The three first protrusions 11 jointly support the fourth protrusion 23, making the fourth protrusion 23 more stable.

As shown in FIG. 32 , each fourth protrusion 23 is supported by four first protrusions 11 .

It can be understood that the first protrusion 11 and the fourth protrusion 23 can also be circular, elliptical, etc. The shapes of the first protrusion 11 and the fourth protrusion 23 may be the same or different.

It should be noted that for the sake of simple description, the method embodiments are expressed as a series of action combinations. However, those skilled in the art should know that the embodiments of the present application are not limited by the described action sequence, because According to the embodiments of the present application, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily necessary for the embodiments of the present application.

It should be noted that, in this document, the terms "comprising", "comprises" or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or device that includes a series of elements not only includes those elements, It also includes other elements not expressly listed or inherent in the process, method, article or apparatus. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method, article or apparatus that includes that element.

The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above-mentioned specific implementations. The above-mentioned specific implementations are only illustrative and not restrictive. Those of ordinary skill in the art will Inspired by this application, many forms can be made without departing from the purpose of this application and the scope protected by the claims, and these all fall within the protection of this application.

Claims (33)

1. A respiratory mask, including an interface component, a headgear tube and a strap;

   The interface component is used to be worn on the user's face to communicate with the user's respiratory airway;

   The headband tube includes a headband portion and a first connecting portion. The headband portion is worn at least partially on the top of the user's head. The first connecting portion is connected to the interface assembly. The headband portion and the first connecting portion are connected to the interface assembly. The connecting parts are connected through a first bending part located on the left side of the user's head and a second bending part located on the right side of the user's head. The bending angles of the first bending part and the second bending part are Towards the back of the user’s head;

   The strap is used to be worn behind the user's head, and the first end of the strap is connected to the first bending part, and the second end of the strap is connected to the second bending part;

   Adjust the length of the strap to adjust the bending angle of the first bending part and the second bending part and position the first bending part and the second bending part before and after the user's head Location.
2. The respiratory mask according to claim 1, wherein the first bending part and/or the second bending part includes a bending tube, and the bending tube is provided with a direction toward the side facing the user's head. The recessed structure is recessed inside the bent tube, and the recessed structure is not provided on the side of the bent tube facing behind the user's head.
3. The respiratory mask according to claim 2, wherein a plurality of the recessed structures are provided on the side of the bending tube facing the front of the user, and each of the recessed structures is spaced apart along the length direction of the bending tube.
4. The respiratory mask according to claim 3, wherein the bending modulus of the side of the bending tube facing the front of the user is smaller than the bending modulus of the side of the bending tube facing behind the user's head.
5. The respiratory mask of claim 1, wherein the first bend and/or the second bend comprise a hinge joint.
6. The respiratory mask according to claim 5, wherein the hinged joint includes a first take-over and a second take-over, and the first take-over is rotatably sleeved on the outer wall of the second take-over;

   The first pipe is connected to the headband part, and the second pipe is connected to the first connecting part; or, the first pipe is connected to the first connecting part, and the second pipe is connected to the first connecting part. The headband part is connected.
7. The respirator of claim 1, wherein the strap is an elastic strap.
8. The respiratory mask according to claim 1, wherein the first bending part and/or the second bending part is provided with a tab on a side facing the rear of the user, and the strap is connected to the tab. .
9. The respiratory mask according to claim 1, wherein the headgear tube has an elliptical, racetrack-shaped or D-shaped cross-section.
10. A ventilation device, including the respiratory mask according to any one of claims 1-9.
11. A respirator including: a pad, a headgear tube and a rear headgear;

    The cushion includes opposing first and second sides, the first side having a ventilation cavity for receiving the patient's mouth and/or nose, the cushion being provided with at least one opening, the opening being in contact with the patient's mouth and/or nose. The ventilation cavities are connected;

    The headgear tube is connected to the opening, and is used to fix the pad at an effective treatment position on the patient's face and transmit airflow to the ventilation cavity through the opening;

    The headgear tube surrounds both sides of the patient's face and at least part of the top of the head during use. The headgear tube is provided with at least two second connection portions close to the left and right ears of the patient. The second connecting parts are arranged along the length direction of the headgear tube;

    The back headband surrounds at least part of the patient's back head, and two ends of the back headband are respectively connected to the second connecting portion.
12. The respiratory mask according to claim 11, wherein the two ends of the back headband are respectively provided with snap-in parts or hinge parts, and the snap-in parts are snap-connected with the second connection part, or the hinge parts are snap-connected with the second connecting part. The second connection part is hinged.
13. The respiratory mask according to claim 12, wherein the second connecting part is a hole-shaped structure, the engaging part is a buckle, and the buckle is engaged with the hole-shaped structure.
14. The respiratory mask according to claim 12, wherein the second connecting part is a convex structure, the clamping part is a sleeve, and the sleeve is sleeved on the convex structure.
15. The respiratory mask of claim 14, wherein the raised structure extends toward the patient's nose.
16. The respiratory mask of claim 14, wherein there is a gap between adjacent protruding structures.
17. The respiratory mask of claim 11, wherein the second side of the pad is provided with at least one valve seat, the valve seat is disposed opposite the opening, and the headgear tube is detachably connected to the valve seat. ;

    The valve seat is provided with a valve hole and a valve plate, and the valve hole is connected to the outside world;

    The valve piece is arranged opposite to the valve hole and connected to the valve seat;

    The valve plate has a first position and a second position relative to the valve seat;

    When the valve plate is in the first position, the valve plate is engaged with the valve hole, and the ventilation cavity is in a relatively sealed state;

    When the valve plate is in the second position, the valve plate is separated from the valve hole, and the passage The air cavity communicates with the outside world through the valve hole.
18. The respiratory mask according to claim 17, wherein an exhaust structure is provided on the liner and/or the valve seat, and the ventilation cavity is connected to the outside through the exhaust structure.
19. The respiratory mask according to claim 11, wherein the headgear tube is provided with a pipeline joint near the top of the patient's head, and the pipeline joint is used to connect the air supply pipeline;

    An exhaust structure is provided on the pipe joint, and the ventilation cavity is connected to the outside through the exhaust structure.
20. A ventilation treatment device, including: the respiratory mask according to any one of claims 11-19.
21. A headband tube, the inner wall of the headband tube is provided with a plurality of first protrusions arranged in an array, a first gap is provided between two adjacent first protrusions, and a plurality of the first protrusions are arranged in an array. A gap is connected to form a first airflow channel extending longitudinally along the headband tube.
22. The headgear tube according to claim 21, wherein the inner wall of the headgear tube includes first and second opposite inner walls, the first protrusion is provided on the first inner wall, and the second inner wall The inner wall is provided with a plurality of second protrusions arranged in an array, and the height of the second protrusions is smaller than the height of the first protrusions.
23. The headgear tube according to claim 22, wherein a second gap is provided between two adjacent second protrusions;

    The projection of the second protrusion on the first inner wall is less than or equal to the projection of the first gap on the first inner wall; the projection of the first protrusion on the second inner wall is less than or equal to the The projection of the second gap on the second inner wall.
24. The headgear tube according to claim 21, wherein the inner wall of the headgear tube includes first and second opposite inner walls, the first protrusion is provided on the first inner wall, and the second inner wall The inner wall is provided with a plurality of third protrusions arranged in an array, and a third gap is provided between two adjacent third protrusions;

    The projection of the third protrusion on the first inner wall is smaller than the projection of the first gap on the first inner wall; the projection of the first protrusion on the second inner wall is smaller than the projection of the third gap on the first inner wall. The projection of the second inner wall.
25. The headgear tube of claim 24, wherein the height of the third protrusion is equal to the height of the first protrusion.
26. The headgear tube according to claim 21, wherein the inner wall of the headgear tube includes first and second opposite inner walls, the first protrusion is provided on the first inner wall, The second inner wall is provided with a plurality of fourth protrusions arranged in an array, and a fourth gap is provided between two adjacent fourth protrusions;

    The projection of the fourth protrusion on the first inner wall is greater than the projection of the first gap on the first inner wall, and/or the projection of the first protrusion on the second inner wall is greater than the projection of the first gap on the first inner wall. The projection of the fourth gap on the second inner wall.
27. The headgear tube according to claim 26, wherein a plurality of the fourth gaps are connected to form a second airflow channel extending longitudinally along the headgear tube.
28. The headgear tube according to claim 26, wherein the projection of the first protrusion and the fourth protrusion on the inner wall of the headgear tube is a rhombus, and the fourth protrusion is in the shape of a rhombus on the inner wall of the headgear tube. The projection of the inner wall overlaps with the projection of at least three first protrusions on the first inner wall.
29. The headgear tube according to claim 21, wherein the first protrusion is provided on the first inner wall, and the projection of the first protrusion on the first inner wall is a polygon, a circle or an ellipse. .
30. The headgear tube according to claim 29, wherein when projected into a polygon, the first side of the polygon is parallel to the axis of the headgear tube, and two polygons adjacent to each other along the longitudinal direction of the headgear tube The first sides of are collinear.
31. The headgear tube of claim 29, wherein the polygonal shape includes a rhombus, a rectangle, and a triangle.
32. A mask system comprising the headgear tube according to any one of claims 21-31.
33. A ventilation device including the mask system of claim 32.