Patient interface and breathing apparatus

Abstract

The utility model relates to the field of medical equipment, and discloses a patient interface and a breathing device. The patient interface comprises a main body and a connecting pipe connected with the main body, the main body is provided with an inflation chamber communicated with the connecting pipe, the inflation chamber is provided with an air supply port used for being communicated with the mouth and / or the nose of a patient, the connecting pipe can rotate in any direction relative to the main body, and in the rotating process of the connecting pipe, the air supply port is communicated with the mouth and / or the nose of the patient. And the connecting pipe can be always communicated with the inflation chamber. The breathing device comprises the patient interface, a breathing pipeline and an air supply assembly. According to the patient interface provided by the utility model, the connecting pipe can rotate along any direction relative to the main body, so that the air inlet direction of the breathing pipeline can be quickly changed, and the influence of the head movement of a patient on the stability of the patient interface is reduced, so that the movement flexibility is improved on the basis of ensuring the wearing stability; the use experience of a patient is improved, and the treatment compliance is improved.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a patient interface and a breathing device. Background Art

[0002] Non-invasive positive pressure ventilation is a common treatment for obstructive sleep apnea (OSA) and chronic obstructive pulmonary emphysema (COPD). It delivers pressure ventilation provided by the respiratory support device into the patient's airway through the patient interface to assist breathing. The patient interface contacts the patient's face to form a seal. Depending on the area covered, it can be divided into nasal masks, oronasal masks, nasal pillow masks, nasal oxygen cannulas and full-face masks. Compared with other types of masks, nasal oxygen cannulas are smaller in size, easier to move, and have a smaller contact area with the patient, making them more comfortable to wear and easier for patients to accept.

[0003] Patients usually need to wear nasal oxygen cannula for a long time for treatment, so the patient interface is required to be as comfortable, small and flexible as possible to reduce the discomfort caused to patients during treatment. Existing nasal oxygen cannula basically ventilates from one side of the patient, and it is impossible or difficult to change the ventilation direction. When the patient changes direction by lying on his side, the air intake direction of the pipeline cannot be adjusted quickly and conveniently, which reduces the patient's comfort and compliance. Utility Model Content

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the utility model provides a patient interface and a breathing device.

[0005] The utility model provides a patient interface, comprising a main body and a connecting tube connected to the main body, the main body having an air-filled chamber connected to the connecting tube, the air-filled chamber being provided with an air supply port for connecting to the patient's mouth and / or nose, wherein the connecting tube is configured to be rotatable in any direction relative to the main body, and during the rotation of the connecting tube, the connecting tube can always be connected to the air-filled chamber.

[0006] Optionally, the main body further has a central portion, the connecting pipe is connected to the central portion, and the inflation chamber is detachably arranged on the central portion.

[0007] Optionally, the inflatable chamber comprises a plurality of chambers of the same or different specifications, and the plurality of inflatable chambers can be selectively installed in the central portion.

[0008] Optionally, the inflation chamber is provided with a nose fork connected to the air supply port, and the specifications of the nose forks on the multiple inflation chambers are different.

[0009] Optionally, the central portion is provided with a flange, and the inner wall of the inflation chamber is provided with a groove matching the flange.

[0010] Optionally, a ball hole is provided on the central portion, and a ball head matching the ball hole is provided on the end of the connecting tube.

[0011] Optionally, the inflatable chamber has an inner recess located at a central axis of the inflatable chamber for contacting a nasal septum of a patient.

[0012] Optionally, at least a portion of the plenum comprises one or more flexible materials.

[0013] Optionally, the patient interface further comprises two side arms arranged opposite to each other on both sides of the main body, and one end of the side arm is connected to the headband.

[0014] Optionally, the side arms extend along the contours of the patient's face and enable the side arms to fit near the patient's cheekbones.

[0015] Optionally, at least the portion of the side arm that fits the patient's face is made of flexible material.

[0016] Optionally, a strip opening is provided in the middle of the headband to separate the headband into two parts.

[0017] Optionally, the connection length between the headband and the side arms is adjustable.

[0018] Optionally, a first fixing hole and a fixing buckle are provided at one end of the side arm, a gap is formed between the end of the fixing buckle and the first fixing hole for the headband to pass through, and the fixing buckle is rotatably arranged on the side arm to be able to change the size of the gap.

[0019] Optionally, a first fixing hole and a fixing buckle are provided at one end of the side arm, and a gap is formed between the end of the fixing buckle and the first fixing hole for the headband to pass through. A limit pin is also provided at the end of the side arm, and the fixing buckle is slidably set on the limit pin so that the size of the gap can be changed by moving the fixing buckle.

[0020] Optionally, a clamping tooth is provided at the end of the fixing buckle, and the end of the clamping tooth faces the direction of the first fixing hole.

[0021] Optionally, a second fixing hole for the headband to pass through is provided at one end of the side arm, and an adhesive layer is provided at the end of the headband.

[0022] Optionally, one end of the connecting tube is used to be connected to a breathing circuit, and a first circuit support is movably connected to the side arm and / or the headband, and the first circuit support is used to support the breathing circuit.

[0023] The utility model also provides a breathing device, comprising any one of the above-mentioned patient interfaces, a breathing circuit connected to a connecting tube of the patient interface, and an air supply component connected to the breathing circuit.

[0024] Optionally, a second tube support is provided at one end of the breathing tube away from the patient interface.

[0025] Compared with the prior art, the technical solution provided by the utility model has the following advantages:

[0026] The connecting tube in the patient interface provided by the utility model can be rotated in any direction relative to the main body, so that the ventilation direction of the breathing circuit can be quickly changed and the influence of the patient's head movement on the stability of the patient interface is reduced. Therefore, on the basis of ensuring the wearing stability, the flexibility of movement is improved, the patient's usage experience is improved, and the treatment comfort and compliance are increased.

[0027] The patient interface inflation chamber provided by the utility model uses a flexible material, and when filled with gas, it can act as an air bag to play a buffering role; the inflation chamber is provided with an inner recess corresponding to the patient's nasal septum, which reduces the pressure on the nasal septum and improves the wearing comfort; the inflation chamber includes a variety of sizes and specifications, and inflation chambers of different specifications can be replaced to achieve multi-size changes, thereby reducing costs.

[0028] The side arms of the patient interface provided by the utility model have an arc extending to both sides along the facial contour, the side arms are connected to the headband through a headband fixing structure, and the headband length can be adjusted through the headband fixing structure to adapt to the patient's head, thereby improving the wearing comfort and stability; the headband can have a strip opening to provide patients with more comfortable and stable support. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0030] In order to more clearly illustrate the implementation mode of the utility model or the technical solution in the prior art, the drawings required for use in the implementation mode or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 This is a schematic diagram of the structure of the patient interface described in the embodiment of the utility model;

[0032] Figure 2 This is a schematic structural diagram of the patient interface when the headband is not provided in the embodiment of the utility model;

[0033] Figure 3 This is a schematic diagram of the rotation of the connecting tube of the patient interface according to the embodiment of the utility model;

[0034] Figure 4 This is a schematic structural diagram of the central portion of the embodiment of the utility model;

[0035] Figure 5 It is a front view of the central part of the embodiment of the utility model;

[0036] Figure 6 It is a side view of the central part of the embodiment of the utility model;

[0037] Figure 7 This is a schematic diagram of the structure of the inflatable chamber described in the embodiment of the utility model;

[0038] Figure 8 This is a schematic structural diagram of one side of the inflatable chamber provided with a groove according to an embodiment of the utility model;

[0039] Fig. 9 This is a schematic diagram of the structure of the connecting pipe according to the embodiment of the utility model;

[0040] Fig.10 This is a structural schematic diagram of the design of the first fixing hole and the fixing buckle in an embodiment of the utility model;

[0041] Fig.11 This is a structural schematic diagram of the design of the second fixing hole and the second fixing buckle in an embodiment of the utility model;

[0042] Fig.12 This is a structural schematic diagram of the design method of the second fixing hole in an embodiment of the utility model;

[0043] Fig.13 This is a schematic diagram of the structure when a strip-shaped opening is provided on the headband according to an embodiment of the utility model;

[0044] Fig.14 This is a schematic structural diagram of an embodiment of the utility model in which a first pipeline support is provided on the side arm;

[0045] Fig.15 This is a structural schematic diagram of an embodiment of the utility model when the first pipeline support member is sleeved on the breathing pipeline;

[0046] Fig.16 This is a structural schematic diagram of the embodiment of the utility model when the second pipeline support is sleeved on the breathing pipeline;

[0047] Fig.17 This is a schematic structural diagram of the first pipeline support member in an embodiment of the utility model;

[0048] Fig.18 It is a schematic structural diagram of the second pipeline support member in an embodiment of the utility model.

[0049] Description of Reference Numerals

[0050] 1. Main body; 11. Inflatable chamber; 111. Groove; 112. Nose fork; 113. Inner recess; 12. Central part; 121. Flange; 122. Ball hole; 2. Connecting tube; 21. Ball head; 3. Side arm; 31. First fixing hole; 32. Fixing buckle; 321. Clamping teeth; 35. Limit pin; 36. Second fixing hole; 4. Headband; 41. Strip opening; 5. Breathing circuit; 6. First circuit support; 61. Slider; 62. Block; 7. Second circuit support. DETAILED DESCRIPTION

[0051] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the scheme of the utility model will be further described below. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0052] The following description sets forth many specific details to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the implementation methods in the specification are only part of the implementation methods of the present invention, rather than all of the implementation methods.

[0053] Combination Figures 1 to 3 As shown, the patient interface provided by the embodiment of the utility model includes a main body 1 and a connecting tube 2 connected to the main body 1, the main body 1 has an air-filled chamber 11 connected to the connecting tube 2, and the air-filled chamber 11 is provided with an air supply port for connecting to the patient's mouth and / or nose. Respiratory gas with a certain pressure enters the air-filled chamber 11 through the connecting tube 2, and the respiratory gas in the air-filled chamber 11 flows to the patient's mouth and / or nose through the air supply port. The connecting tube 2 is configured to be able to rotate in any direction relative to the main body 1, that is, the connection between the connecting tube 2 and the main body 1 can achieve 360° free rotation relative to the main body 1, so that the air intake direction of the respiratory gas can be quickly changed, and the influence of the patient's head movement on the stability of the patient interface can be reduced. During the rotation of the connecting tube 2, the connecting tube 2 can always be connected to the air-filled chamber 11 to ensure the gas delivery effect.

[0054] The connecting tube 2 in the patient interface provided by the utility model can be rotated in any direction relative to the main body 1, so that the air intake direction of the breathing circuit can be quickly changed and the influence of the patient's head movement on the stability of the patient interface is reduced. Therefore, on the basis of ensuring the wearing stability, the flexibility of movement is improved, the patient's usage experience is improved, and the treatment compliance is increased.

[0055] In some embodiments, the connecting tube 2 is a curved tube, and the curved tube is designed so that the extending direction of the breathing tube 5 forms a certain angle with the patient, thereby increasing the convenience of use.

[0056] In some embodiments, in combination Figures 4 to 6 As shown, the main body 1 also has a central portion 12, the connecting pipe 2 is connected to the central portion 12, and the inflatable chamber 11 is detachably arranged on the central portion 12. In this design, the inflatable chamber 11 and the central portion 12 adopt a split structure, which is convenient for replacing the inflatable chamber 11. In some embodiments, the connection between the inflatable chamber 11 and the central portion 12 is not limited, and can also be a non-detachable connection or an integrated structure, which can be designed according to actual needs.

[0057] In some embodiments, the inflatable chamber 11 includes a plurality of the same or different specifications, and the plurality of inflatable chambers 11 can be selectively installed in the central portion 12. In this design, the patient can replace the inflatable chamber 11 in time according to actual use or can select different inflatable chambers 11 to be installed in the central portion 12 according to actual needs, so as to facilitate the use of the patient or be suitable for different patients, thereby reducing costs.

[0058] As a feasible implementation method, combined with Figures 7 and 8 As shown, the nasal prongs 112 connected to the air supply port are provided on the air chamber 11, and the specifications of the nasal prongs 112 on the multiple air chambers 11 are different. That is, the specifications of the nasal prongs 112 on different air chambers 11 are different. On the basis of ensuring that the central part 12 remains unchanged, the air chambers 11 with nasal prongs 112 of different specifications can be replaced to be suitable for different patients, thereby reducing costs.

[0059] In this design, the gas can be delivered from the gas chamber 11 to the patient's nasal cavity through the nasal prong 112. At this time, the patient interface is a nasal oxygen cannula. It is understandable that the nasal prong 112 can also be replaced with other components that provide oxygen to the patient's mouth and / or nose. Accordingly, the patient interface can be a nasal mask, an oronasal mask, a nasal pillow mask or a full face mask, etc., which can be selected according to actual needs.

[0060] The detachable connection between the inflatable chamber 11 and the central portion 12 of the present application includes but is not limited to the following embodiments:

[0061] In some embodiments, in combination Figure 6 and Figure 8As shown, the central portion 12 is provided with a flange 121, and the inner wall of the air-filled chamber 11 is provided with a groove 111 that is snap-fitted with the flange 121. Specifically, the outer periphery of the central portion 12 facing the air-filled chamber 11 is provided with a flange 121, the interior of the air-filled chamber 11 is hollow, and the inner wall of the air-filled chamber 11 facing the central portion 12 is provided with a groove 111. During installation, the air-filled chamber 11 can be pressed toward the central portion 12 so that the flange 121 is snapped into the groove 111 to achieve an interference fit, thereby achieving a detachable connection between the central portion 12 and the air-filled chamber 11.

[0062] In other embodiments, an annular protrusion is provided on the periphery of the air chamber 11, and an annular groove matching the annular protrusion is provided inside the central portion 12. In this design, the connection method between the central portion 12 and the air chamber 11 is the same as above, and no further description is given here.

[0063] In other embodiments, the outer periphery of the central portion 12 is provided with an external thread, and the inner wall of the inflation chamber 11 is provided with an internal thread, and the external thread matches the internal thread, thereby achieving a threaded connection between the central portion 12 and the inflation chamber 11.

[0064] In other embodiments, the inner wall of the central portion 12 is provided with an internal thread, and the outer wall of the inflation chamber 11 is provided with an external thread, and the external thread matches the internal thread, thereby achieving a threaded connection between the central portion 12 and the inflation chamber 11.

[0065] It can be seen that the detachable connection method between the inflation chamber 11 and the central portion 12 of the present application is not limited and can be selected according to actual needs.

[0066] In some embodiments, Figure 7 As shown, the inflatable chamber 11 has an inner concave portion 113, and the inner concave portion 113 is located at the central axis of the inflatable chamber 11 for contacting the nasal septum of the patient. The shape of the inner concave portion 113 can be a shape that matches the nasal septum of the patient. After the nasal prong 112 is inserted into the nasal cavity of the patient, the nasal septum of the patient is located in the inner concave portion 113, so as to reduce the pressure of the inflatable chamber 11 on the nasal septum and improve the wearing comfort of the patient.

[0067] In some embodiments, in combination Figure 4 and Fig. 9 As shown, a ball hole 122 is provided on the central portion 12 , and a ball head 21 matching the ball hole 122 is provided at the end of the connecting pipe 2 .

[0068] Specifically, the ball hole 122 is a non-complete spherical structure, and its profile is that at least one side of the sphere is cut flat, so that the end surface of the ball hole 122 is a plane, and the end surface diameter of the ball hole 122 is smaller than the maximum diameter of the ball hole 122. Fig. 9As shown, the ball head 21 is also an incomplete spherical structure, and its contour is that the corresponding two sides of the sphere are cut flat, and the end face diameter of the ball head 21 is smaller than the maximum diameter of the ball head 21. One side of the ball head 21 is connected to the connecting tube 2, and the other side of the ball head 21 can be pressed into the ball hole 122 to increase the convenience of assembling the connecting tube 2 and the central part 12. The design of the ball head 21 and the ball hole 122 allows the ball head 21 to be inserted into the ball hole 122, preventing the connecting tube 2 from being separated from the central part 12 during use, and realizing 360° free rotation of the connecting tube 2, so that the air intake direction of the breathing tube 5 can be quickly changed, and the influence of the patient's head movement on the stability of the patient interface is reduced.

[0069] In some embodiments, in combination Figures 4 to 6 As shown, the ball hole 122 and the flange 121 are relatively arranged on both sides of the central portion 12. This design makes the structure of the central portion 12 more compact, thereby making the structure of the patient interface more compact.

[0070] At least a portion of the inflatable chamber 11 of the present application includes one or more flexible materials. In the inflatable chamber 11 of this design, when the inflatable chamber 11 is filled with gas, the inflatable chamber 11 can act as an airbag, which plays a buffering role when worn by the patient and improves wearing comfort. Among them, in order to increase the convenience of production, in a preferred manner, the entire inflatable chamber 11 is made of a flexible material. In a preferred manner, the inflatable chamber 11 can be made of silicone, thermoplastic elastomer (TPE or TPU), or flexible materials such as gel and foam, which are not restrictive.

[0071] In some embodiments, in combination Figures 1 to 6 As shown, the patient interface further includes two side arms 3 arranged on both sides of the main body 1, and one end of the side arm 3 is connected to the headband 4. The side arm 3 is connected to the central portion 12 of the main body 1. In a preferred embodiment, the side arm 3 and the central portion 12 of the main body 1 are integrally formed to increase the convenience of manufacturing and the firmness of the patient interface. Of course, a split structure can also be used, and this solution does not limit this.

[0072] In this design, the main body 1, the two side arms 3 and the headband 4 form a ring structure, so that the patient interface can be put on the patient's head to fix the patient interface and increase the convenience of use.

[0073] In some embodiments, continue to refer to Figures 1 to 6, the side arm 3 extends along the facial contour of the patient, and enables the side arm 3 to fit near the patient's cheekbone. This design method allows the side arm 3 to have a certain curvature to meet the ergonomic design, and its curvature allows the side arm 3 to remain in close contact with the cheekbone, thereby improving the wearing stability. For example, the side arm 3 can be located slightly below the patient's cheekbone, thereby preventing the side arm from moving upward.

[0074] At least the part of the side arm 3 that fits the patient's face is made of a flexible material. The flexible material part should have a certain degree of softness, and at the same time ensure its stability to prevent the patient's facial shape from changing or moving and affecting the position of the nasal prong 112 in the patient's nasal cavity, ensuring the patient's wearing comfort. Among them, the material of the flexible material is preferably polypropylene (PP), and polyethylene (PE), silicone, thermoplastic elastomer (TPE or TPU) and other materials can also be used, which are not restrictive.

[0075] For further optimization, the entire structure of the side arm 3 of the present application is made of flexible material to increase the convenience of manufacturing.

[0076] like Fig.13 As shown, in some embodiments, a strip opening 41 is provided in the middle of the headband 4 to separate the headband 4 into two parts. This design can tighten the headband 4 from two angles, providing a more comfortable and stable support for the patient.

[0077] The connection length between the headband 4 and the side arm 3 of the present application can be adjusted. Specifically, when the connection length between the headband 4 and the side arm 3 increases, the length enclosed by the headband 4 and the side arm 3 decreases, and when the connection length between the headband 4 and the side arm 3 decreases, the length enclosed by the headband 4 and the side arm 3 increases, thereby meeting the use needs of different patients and increasing the adaptability range.

[0078] The following is a description of the adjustment method of the connection length between the headband 4 and the side arm 3 using a specific embodiment:

[0079] Example 1

[0080] like Fig.10 As shown, one end of the side arm 3 is provided with a first fixing hole 31 and a fixing buckle 32, a gap through which the headband 4 can pass is formed between the end of the fixing buckle 32 and the first fixing hole 31, and the fixing buckle 32 is rotatably arranged on the side arm 3 to change the size of the gap. The manner in which the fixing buckle 32 is rotatably arranged on the side arm 3 is not limited, for example, a support may be arranged on the side arm 3, and the fixing buckle 32 and the support are connected via a rotating shaft, so that the two ends of the fixing buckle 32 can rotate around the rotating shaft, thereby realizing the lifting or pressing down of the end of the fixing buckle 32.

[0081] Specifically, the shape of the first fixing hole 31 is not limited, and it only needs to allow the end of the headband 4 to pass through. After the end of the headband 4 passes through the first fixing hole 31, it passes through the slit. When the length of the end of the headband 4 passing through the slit reaches a preset length, the fixing buckle 32 can be rotated to reduce the size of the slit, and then the headband 4 is clamped by the end of the fixing buckle 32 to achieve the fixation of the position of the headband 4 and the fixing buckle 32. When adjusting the length of the headband 4 passing through the slit, the fixing buckle 32 is rotated to increase the size of the slit. At this time, the headband 4 can move to adjust the length of the headband 4 passing through the slit.

[0082] Further optimized, the end of the fixing buckle 32 is provided with a clamping tooth 321, and the end of the clamping tooth 321 faces the direction of the first fixing hole 31. Specifically, the clamping tooth 321 includes a plurality of sharp teeth, and the plurality of sharp teeth are arranged in sequence along the width direction of the fixing buckle 32, and the sharp teeth have an inner buckle at a certain angle, so that a gap is formed between the sharp teeth and the first fixing hole 31, and the headband 4 is fixed in the gap by the plurality of sharp teeth, thereby increasing the fixing effect of the headband 4 and keeping the patient interface fixed to the patient's face. The patient can tighten the headband 4 by pulling the end of the headband 4 or press the fixing buckle 32 to loosen the sharp teeth so that the headband 4 can freely pass through the gap to adjust its length to adapt to the patient's head, thereby increasing the convenience of operation.

[0083] Example 2

[0084] like Fig.11 As shown, one end of the side arm 3 is provided with a first fixing hole 31 and a fixing buckle 32, and a gap is formed between the end of the fixing buckle 32 and the first fixing hole 31 for the headband 4 to pass through. A limiting pin 35 is also provided at the end of the side arm 3, and the fixing buckle 32 is slidably set on the limiting pin 35 so that the size of the gap can be changed by moving the fixing buckle 32.

[0085] Specifically, the limiting pin 35 extends in a direction perpendicular to the side arm 3 or the end of the limiting pin 35 is inclined toward one side of the headband 4, and the fixing buckle 32 is provided with a through hole for the limiting pin 35 to pass through, and the fixing buckle 32 is slidably matched with the limiting pin 35 through the through hole, and a limiting cap is provided at the end of the limiting pin 35, so that the fixing buckle 32 is limited on the limiting pin 35 through the limiting cap to prevent the fixing buckle 32 from being separated from the limiting pin 35. Among them, the shape of the limiting pin 35 is not limited, for example, the cross section of the limiting pin 35 can be rectangular, triangular, trapezoidal or other irregular shapes, etc., and can be designed according to actual needs, but it should be ensured that the limiting pin 35 and the fixing buckle 32 cannot rotate relative to each other.

[0086] When in use, the end of the headband 4 passes through the first fixing hole 31 and then through the slit. When the length of the end of the headband 4 passing through the slit reaches a preset length, the fixing buckle 32 can be moved to reduce the size of the slit, and then the headband 4 is clamped by the end of the fixing buckle 32 to fix the position of the headband 4 and the fixing buckle 32. When adjusting the length of the headband 4 passing through the slit, the fixing buckle 32 is moved upward to increase the size of the slit. At this time, the headband 4 can move to adjust the length of the headband 4 passing through the slit.

[0087] Further optimized, the end of the fixing buckle 32 is provided with a clamping tooth 321, and the end of the clamping tooth 321 faces the direction of the first fixing hole 31. Specifically, the clamping tooth 321 includes a plurality of sharp teeth, and the plurality of sharp teeth are arranged in sequence along the width direction of the fixing buckle 32, so that a gap is formed between the sharp teeth and the first fixing hole 31, and the headband 4 is fixed in the gap by the plurality of sharp teeth, thereby increasing the fixing effect of the headband 4 and keeping the patient interface fixed to the patient's face. The patient can tighten the headband 4 by pulling the end of the headband 4 or lift the fixing buckle 32 to loosen the sharp teeth so that the headband 4 can freely pass through the gap to adjust its length to fit the patient's head, thereby increasing the convenience of operation.

[0088] Example 3

[0089] like Fig.12 As shown, one end of the side arm 3 is provided with a second fixing hole 36 for the headband 4 to pass through, and an adhesive layer is provided at the end of the headband 4. The adhesive layer can be formed of non-disposable self-adhesive materials such as Velcro or glue.

[0090] When in use, the end of the headband 4 passes through the second fixing hole 36, and the part of the headband 4 that passes through the second fixing hole 36 is folded back so as to be bonded to the corresponding part of the headband 4 that does not pass through the second fixing hole 36 through the adhesive layer at the end of the headband 4, so as to realize the connection between the headband 4 and the side arm 3, which is convenient to operate.

[0091] It can be seen that the connection method between the headband 4 and the side arm 3 of the present application is not restricted and can be selected according to actual needs.

[0092] Combination Figures 14 to 16 As shown, one end of the connecting tube 2 is used to connect with the breathing tube 5, and the side arm 3 and / or the headband 4 are movably connected with a first tube support 6, which is used to support the breathing tube 5. In this design, when the connecting tube 2 is rotated to a suitable angle, the breathing tube 5 can be suspended on the side arm 3 or the headband 4 through the first tube support 6 to keep the breathing tube 5 in a certain direction, reduce the involvement of the movement of the breathing tube 5, and increase the stability of the patient interface.

[0093] In some embodiments, the first pipeline support 6 can be a buckle, which is detachably connected to the side arm 3 and / or the headband 4, and the buckle can be passed through the breathing pipeline 5. In this design, the breathing pipeline 5 can be hung on the side arm 3 or the headband 4 through the buckle.

[0094] As a feasible implementation method, Fig.14 As shown, the side arm 3 is movably connected with a buckle, and the buckle can be passed through by the breathing tube 5. Specifically, a slider 61 is provided on the side arm 3, a clamping block 62 is provided on the buckle, and a sliding groove matching the slider 61 is provided on the clamping block 62, so that the clamping block 62 can be detachably connected with the slider 61.

[0095] When in use, the buckle can be put on the breathing tube 5. When the buckle needs to be connected, the block 62 on the buckle is connected to the slider 61 on the side arm 3, thereby limiting the position and direction of the breathing tube 5. The structure is simple and the operation is convenient.

[0096] As another feasible implementation, combining Figures 15 to 17 As shown, the headband 4 is movably connected with a buckle, and the buckle can be passed through the breathing tube 5. Specifically, as Fig.17 As shown, a strap clip is provided on the buckle, and an opening is provided on the strap clip for the headband 4 to pass through, and the strap clip adopts an elastic structure to increase the firmness of the connection between the strap clip and the headband 4 and the convenience of disassembly and assembly.

[0097] It can be seen that the present application provides a buckle, which can be connected to the side arm 3 or the headband 4 according to different needs, so as to reduce the entanglement of the movement of the breathing tube 5 and increase the stability of the patient interface.

[0098] The utility model also provides a breathing device, comprising any one of the above patient interfaces, a breathing circuit 5 connected to the connecting tube 2 of the patient interface, and an air supply assembly connected to the breathing circuit 5. The patient interface here includes all the technical features of the above patient interfaces.

[0099] In some embodiments, a second tube support 7 is provided at one end of the breathing tube 5 away from the patient interface. The second tube support 7 is used to connect with the patient's clothing, bear part of the weight of the breathing tube 5, avoid dragging and moving the breathing tube 5 on the patient interface, and ensure the use effect of the patient interface.

[0100] As a feasible implementation method, Fig.18 As shown, the second pipeline support 7 can be a clip. The design of the clip is not limited and can be selected according to actual needs. The clip is used to connect with the patient's clothing and bear part of the weight of the breathing tube 5.

[0101] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0102] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments described herein, but should conform to the widest scope consistent with the principles and novel features of the present invention.

Claims

1. A patient interface, characterized in that The invention comprises a main body (1) and a connecting tube (2) connected to the main body (1), wherein the main body (1) has an air-filled chamber (11) connected to the connecting tube (2), and the air-filled chamber (11) is provided with an air supply port for connecting to the mouth and / or nose of a patient, wherein the connecting tube (2) is arranged to be rotatable in any direction relative to the main body (1), and during the rotation of the connecting tube (2), the connecting tube (2) can always be connected to the air-filled chamber (11).

2. The patient interface according to claim 1, characterized in that The main body (1) also has a central portion (12), the connecting pipe (2) is connected to the central portion (12), and the inflation chamber (11) is detachably arranged on the central portion (12).

3. The patient interface according to claim 2, characterized in that The inflatable chamber (11) includes multiple inflatable chambers of the same or different specifications, and the multiple inflatable chambers (11) can be selectively installed on the central part (12), and / or the inflatable chamber (11) is provided with a nose fork (112) connected to the air supply port, and the specifications of the nose forks (112) on the multiple inflatable chambers (11) are different.

4. The patient interface according to claim 2, characterized in that The central portion (12) is provided with a flange (121), the inner wall of the inflation chamber (11) is provided with a groove (111) matching the flange (121), and / or the central portion (12) is provided with a ball hole (122), and the end of the connecting pipe (2) is provided with a ball head (21) matching the ball hole (122).

5. The patient interface according to claim 1, characterized in that The inflatable chamber (11) has an inner recess (113) located at the central axis of the inflatable chamber (11) for contacting the patient's nasal septum, and / or at least a portion of the inflatable chamber (11) includes one or more flexible materials.

6. The patient interface of claim 1, wherein: The patient interface further comprises side arms (3) arranged on both sides of the main body (1), and one end of the side arm (3) is connected to a headband (4).

7. The patient interface according to claim 6, characterized in that The side arm (3) extends along the facial contour of the patient, and enables the side arm (3) to fit near the patient's cheekbone; and / or at least the portion of the side arm (3) that fits the patient's face is made of a flexible material.

8. The patient interface according to claim 6, characterized in that A strip opening (41) is provided in the middle of the headband (4) to separate the headband (4) into two parts, and / or the connection length between the headband (4) and the side arm (3) can be adjusted.

9. The patient interface according to claim 6, characterized in that One end of the side arm (3) is provided with a first fixing hole (31) and a fixing buckle (32); a gap through which the headband (4) can pass is formed between the end of the fixing buckle (32) and the first fixing hole (31); the fixing buckle (32) is rotatably arranged on the side arm (3) so as to be able to change the size of the gap; or a limit pin (35) is further arranged at the end of the side arm (3); the fixing buckle is slidably arranged on the limit pin (35) so as to be able to change the size of the gap by moving the fixing buckle.

10. The patient interface of claim 9, wherein: A clamping tooth (321) is provided at the end of the fixing buckle (32), and the end of the clamping tooth (321) faces the direction of the first fixing hole (31).

11. The patient interface of claim 6, wherein: One end of the side arm (3) is provided with a second fixing hole (36) through which the headband (4) can pass, and an adhesive layer is provided at the end of the headband (4).

12. The patient interface of claim 6, wherein: One end of the connecting tube (2) is connected to the breathing tube (5), and a first tube support (6) is movably connected to the side arm (3) and / or the headband (4), and the first tube support (6) is used to support the breathing tube (5).

13. A breathing device, characterized in that: It comprises a patient interface as claimed in any one of claims 1 to 12, a breathing circuit (5) connected to a connecting tube (2) of the patient interface, and an air supply assembly connected to the breathing circuit (5).

14. The breathing apparatus according to claim 13, characterized in that A second tube support (7) is provided at one end of the breathing tube (5) away from the patient interface.

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