Mask ventilation system with connector convenient to replace

Abstract

The invention relates to the technical field of respiratory support equipment, in particular to a mask ventilation system with a connector convenient to replace, the mask ventilation system comprises a respiratory mask, a connecting ring and an elbow, the elbow is connected with the respiratory support equipment, a connecting hole clamped with the connecting ring is formed in the respiratory mask, a clamping hook clamped with the connecting ring is movably arranged on the elbow, and the connector is connected with the connecting ring through the clamping hook. A clamping ring is arranged on the side face of one end of the connecting ring, a buckling ring is arranged on the side face of the other end of the connecting ring, a limiting ring is arranged on the outer side face of the connecting ring and located between the buckling ring and the clamping ring, a buckling groove is formed between the limiting ring and the buckling ring, the clamping ring is clamped with the connecting hole, and the clamping hook is clamped with the buckling groove. A U-shaped groove penetrating through the clamping ring is formed in the side face of the end, close to the clamping ring, of the connecting ring. The bent pipe is communicated with the breathing mask through the connecting ring, a user can use the breathing mask conveniently, meanwhile, disassembly and assembly are convenient, and working efficiency can be improved easily.

Description

Technical Field

[0001] The invention relates to the technical field of respiratory support equipment, and in particular to a mask ventilation system with convenient connector replacement. Background Art

[0002] Currently, most of the respiratory masks on the market are masks with exhaust holes. Masks with exhaust holes are equipped with special exhaust holes at the end of the mask to facilitate the discharge of respiratory waste gas. They are mostly used in home environments. This type of mask has the widest coverage and is the most common type of mask in the market. The other type is masks without exhaust holes, that is, the mask has no special exhaust holes. They are mostly used in medical environments, and the air is usually exhausted from the breathing circuit, exhaust accessories or ventilator end. It is worth noting that the application methods and scenarios of masks without exhaust holes are more complicated than those of masks with exhaust holes, and require professional medical staff to operate and use.

[0003] However, it is difficult to replace the bent tubes of existing non-row masks. When using non-row masks, patients usually need to replace different bent tubes to suit different scenarios. The bent tubes of non-row masks on the market are currently non-detachable. Even if the mask is designed with a detachable bent tube, it is difficult to disassemble and assemble, and the mask must be removed before it can be disassembled.

[0004] The elbow plug-in and pull-out mechanism, respiratory mask and ventilation therapy equipment with application number CN202211718649.8 discloses a structure including a connector having at least one first limiter disposed on the inner side wall, and at least one second limiter disposed on one end of the elbow connector for plugging into the main body of the respiratory mask; along the plug-in and pull-out direction of the elbow connector, the switching from the first relative position to the second relative position is achieved by pressing. When in the first relative position, the first limiter is engaged with the second limiter to limit the freedom of relative rotation of the connector and the elbow connector; when in the second relative position, the first limiter is at least partially separated from the second limiter, and the connector and the elbow connector are allowed to rotate relative to each other to the pluggable position of the elbow connector; it discloses a structure that uses a connector to connect an elbow and a respiratory mask, but it is still inconvenient to replace different elbows during use, and the structure is relatively complicated. Summary of the invention

[0005] The technical problem to be solved by the present invention is that it is inconvenient to replace different elbows on a breathing mask.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] Firstly, a mask ventilation system with convenient joint replacement is provided, comprising a breathing mask, a connecting ring and a bent pipe, wherein the bent pipe is connected to a breathing support device, a connecting hole engaged with the connecting ring is provided on the breathing mask, a hook engaged with the connecting ring is movably provided on the bent pipe, a clamping ring is provided on the side surface of one end of the connecting ring, a buckle ring is provided on the side surface of the other end, a limiting ring is provided on the outer side surface of the connecting ring between the buckle ring and the clamping ring, a buckle groove is formed between the limiting ring and the buckle ring, the clamping ring is engaged with the connecting hole, the hook is engaged with the buckle groove, and a U-shaped groove penetrating the clamping ring is provided on the side surface of one end of the connecting ring close to the clamping ring.

[0008] Furthermore, a plurality of evenly distributed quick-release handles are provided on the curved tube, a hook is formed at one end of the quick-release handle, and the end face of the curved tube contacts the end face of the buckle ring; the quick-release handle can be used to conveniently remove the hook from the buckle slot, making operation convenient for users.

[0009] Furthermore, the quick-release handle is connected to the curved pipe via a deformation portion; the deformation portion serves as a fulcrum, which facilitates the user to push the quick-release handle to rotate.

[0010] Furthermore, the end surface of the connecting ring is provided with an extension portion which is plugged into the bent pipe; the extension portion makes the connection between the connecting ring and the bent pipe more stable and reliable.

[0011] Furthermore, the breathing mask comprises a frame, a forehead pad and a sealing pad are arranged on the frame, and a connecting hole is opened on the frame.

[0012] Furthermore, a cannula sticker is provided on the sealing pad, a protrusion is provided in the middle of the cannula sticker, and a cannula is inserted into the protrusion; the cannula sticker can be used to smoothly introduce the cannula into the breathing mask, so as to facilitate treatment of the user.

[0013] Furthermore, an inner ring is provided in the bent pipe, and an anti-suffocation valve sheet and an anti-suffocation valve hole are provided in the bent pipe between the inner ring and the connecting ring, and the anti-suffocation valve sheet covers the end face of the inner ring; the inner ring and the anti-suffocation valve sheet play a certain one-way valve effect, preventing exhaust gas from entering the breathing duct, thereby improving the stability of the device.

[0014] Furthermore, a limiting beam is provided at the end of the inner ring corresponding to the anti-suffocation valve plate; the limiting beam prevents the anti-suffocation valve plate from getting stuck in the inner ring due to deformation, gravity, excessive pressure and other factors.

[0015] Furthermore, the anti-suffocation valve sheet is coupled to the bent pipe through the mounting portion, and an adaptive groove position is provided at the position of the inner ring corresponding to the mounting portion; the groove position and the mounting portion form a limit and clamping match, which can fix the circumferential freedom of the inner ring, thereby achieving a fixing effect.

[0016] Furthermore, an exhaust hole is provided on the bent pipe.

[0017] The present invention has the following beneficial effects:

[0018] 1. The present invention can smoothly dock with the part to be connected by arranging a clamping ring and a buckle ring on the connecting ring, thereby ensuring the smooth use of the device. At the same time, the setting of the limit ring also limits the position during the docking process to ensure the accuracy of the installation position. At the same time, the setting of the U-shaped groove also enables the clamping ring to be inserted into the connecting hole with a diameter slightly smaller than the diameter of the connecting ring, thereby facilitating the installation of the device.

[0019] Second, the quick-release handle on the elbow also makes it easier and quicker to connect it to the connecting ring. It is also easier and quicker to disassemble and assemble, which is beneficial to improving work efficiency. Different elbows can be selected according to different situations, which greatly improves work efficiency.

[0020] Third, the arrangement of the inner ring and the anti-suffocation valve sheet of the present invention also plays an anti-suffocation effect when the respiratory support device fails, and also reduces the possibility of repeated inhalation of waste gas, thereby improving the safety of the device.

[0021] 4. At the same time, the anti-suffocation valve also reduces the exhaled waste gas from entering the breathing circuit, reducing the possibility of circuit infection, making the device more secure and safe to use, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 Schematic diagram of the connecting ring structure of this embodiment;

[0024] Figure 2 This is a schematic diagram of the installation structure of the connecting ring and the elbow of this embodiment;

[0025] Figure 3 It is a side view of the connection ring and elbow installation structure of this embodiment;

[0026] Figure 4 It is a schematic diagram of the elbow structure of the first embodiment;

[0027] Figure 5 It is a schematic diagram of the elbow structure of the second embodiment;

[0028] Figure 6 It is a side view of the bent pipe structure of the second embodiment;

[0029] Figure 7 It is a schematic diagram of the elbow structure of the third embodiment;

[0030] Figure 8 Three views of the inner trap of this embodiment;

[0031] Fig. 9 This is a schematic diagram of the gas flow during the anti-suffocation principle of this embodiment;

[0032] Fig.10 This is a schematic diagram of the structure of the cannula patch of this embodiment;

[0033] Fig.11 This is a schematic diagram of the connection between the intubation tube and the breathing mask in this embodiment;

[0034] Fig.12 is an exploded view of the breathing mask of this embodiment;

[0035] Fig.13 Schematic diagram of the three-dimensional structure of the breathing mask of this embodiment;

[0036] Fig.14 This is a schematic diagram of the installation of a double-branch breathing circuit in this embodiment. DETAILED DESCRIPTION

[0037] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0038] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0039] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] The present invention provides a mask ventilation system with convenient replacement of connectors, such as Figure 1 As shown, it includes a connecting ring 4, wherein a clamping ring 41 is provided on the side of one end of the connecting ring 4, and a buckle ring 43 is provided on the side of the other end, wherein the clamping ring 41 is inclined away from the side of the buckle ring 43 to facilitate insertion into the parts to be connected, and a limiting ring 42 is provided on the side of the connecting ring 4 between the clamping ring 41 and the buckle ring 43, in order to enable the connecting ring 4 to be smoothly connected to other parts, wherein the connecting ring 4 is made of polypropylene material (PP material for short).

[0042] Specifically, a buckle groove 45 is formed between the buckle ring 43 and the limiting ring 42 , and the buckle groove 45 is snap-connected with other components that need to be connected.

[0043] In the present embodiment, in order to enable the connecting ring 4 to be smoothly engaged with other components, a U-shaped groove 44 penetrating the snap ring 41 is provided on the side of one end of the connecting ring 4 close to the snap ring 41. In the process of connecting one end of the snap ring 41 with other components, the snap ring 41 is squeezed and the U-shaped groove 44 shrinks. At this time, the diameter of one end of the connecting ring 4 located at the snap ring 41 becomes smaller, and it can be conveniently inserted into the hole reserved for other components. Thereafter, the snap ring 41 is loosened, and the snap ring 41 is restored to its original state, so that the snap ring 41 is engaged with the hole reserved for other components to achieve docking.

[0044] like Figure 2 , Figure 3 and Figure 4 As shown, it comprises a curved pipe 5, wherein a connecting piece is provided at one end of the curved pipe 5, and the connecting piece is clamped with the above-mentioned connecting ring.

[0045] In this embodiment, the connecting piece includes a hook 511, and the hook 511 is provided on the curved tube 5, wherein the hook 511 is inserted into the buckle groove 45 to connect the curved tube 5 with the connecting ring 4. Specifically, a quick-release handle 51 is provided on the curved tube 5, and a hook 511 is formed at one end of the quick-release handle 51. The quick-release handle 51 is connected to the curved tube 51 through a deformation portion 512. In order to ensure a stable connection, a plurality of quick-release handles 51 are provided on the curved tube 5.

[0046] Specifically, during use of this embodiment, the quick-release handle 51 is first rotated around the deformation portion 512 to open the hook 511, and then the buckle groove 45 on the connecting ring 4 is placed between the hooks 511. At this time, the end of the bent pipe 5 is against the buckle 43, and then the quick-release handle 51 is released. At this time, the deformation portion 512 returns to its original state, allowing the hook 511 to enter the buckle groove 45, completing the connection between the bent pipe and the connecting ring 4. In order to make the connection between the bent pipe and the connecting ring 4 more stable, the connecting ring 4 is provided with an extension portion 46 at the end of the buckle 43, and the extension portion 46 is inserted into the bent pipe 5 to achieve a certain positioning effect, so that the connection between the connecting ring 4 and the bent pipe is more stable.

[0047] When the bent pipe 5 needs to be disassembled, it is only necessary to press the quick-release handle 51 to move the hook 511 out of the buckle groove 45, so that the connecting ring 4 can be pulled out to complete the disassembly. At the same time, in order to facilitate the installation, the side of the buckle 43 corresponding to the bent pipe 5 is an inclined surface; when installing the connecting ring 4 on the bent pipe 5, it is only necessary to push the connecting ring 4. At this time, under the action of the inclined surface, the hook 511 will be automatically stretched open until the hook 511 enters the buckle groove 45, and the connection between the connecting ring 4 and the bent pipe is completed. The disassembly and assembly are convenient, which is conducive to improving work efficiency. At the same time, the bent pipe 5 is made of polycarbonate (PC material for short).

[0048] In order to facilitate manufacturing, improve production efficiency and reduce costs, the quick-release handle 51, the deformation portion 521 and the curved tube 5 are integrally formed.

[0049] like Fig.12 and Fig.13 As shown, it includes a breathing mask 1, which includes a frame, on which a forehead pad 2 and a sealing pad 3 are arranged, and a connecting hole 12 is opened on the frame, wherein the connecting hole 12 is installed with a bend pipe 5 through a connecting ring 4, and the bend pipe 5 is connected to the respiratory support device.

[0050] Specifically, the clamping ring 41 is engaged with the connecting hole 12. During the installation process, the clamping ring 41 is squeezed and the U-shaped groove 44 shrinks, so that the clamping ring 41 can be inserted into the connecting hole 12 until it stops with the limiting ring 42. Then, the clamping ring 41 is released and restored to its original state, so that the clamping ring 41 is engaged with the connecting hole 12, and the bent pipe 5 is connected to the frame 1, thereby connecting the respiratory support device to the breathing mask.

[0051] According to actual usage, in order to facilitate the measurement of the pressure in the breathing mask or connect other equipment, several multi-functional interfaces 11 are arranged on the frame 1, and a matching soft rubber plug 111 is installed on the multi-functional interface 11. The user can remove the soft rubber plug 111 according to different needs, connect the multi-functional interface 11 to oxygen and a pressure measuring instrument, or fully open it to increase the exhaust flow and reduce the residual CO2 in the mask. Generally, the closer the multi-functional interface 11 is to the patient's mouth and nose, the more accurate the test data. When not in use, the multi-functional interface 11 can be sealed with the soft rubber plug 111.

[0052] Since different types of elbows 5 need to be connected according to different situations of users during use, the structures of the elbows 5 are different in different situations.

[0053] First embodiment

[0054] like Figure 4 As shown, a joint 52 is provided on the bent pipe 5, and a sealing plug 521 is provided on the joint 52, wherein the joint 52 can be used for pressure measurement, external oxygen, increased CO2 emission, increased exhaust, etc., and can be used according to actual conditions. When not in use, the joint 52 can be blocked with the sealing plug 521.

[0055] like Fig.14 As shown, this embodiment is generally used in conjunction with a double-branch breathing circuit, and requires professional medical personnel to determine its use based on the actual situation of the patient. The double-branch breathing circuit can discharge the CO2 emitted by the user and transport the therapeutic gas into the breathing mask to treat the user.

[0056] Second embodiment

[0057] like Figure 5 and Figure 6 As shown, an inner ring 54 is provided in the bent pipe 5 , and an anti-suffocation valve plate 531 and an anti-suffocation valve hole 53 are provided inside the bent pipe 5 between the inner ring 54 and the connecting ring 4 , and the anti-suffocation valve plate 531 covers the end surface of the inner ring 54 .

[0058] like Fig. 9 As shown in Figure b, when the breathing support device is working, a therapeutic airflow flows into the bent pipe 5. At this time, the airflow first passes through the inner ring 54, then breaks open the anti-suffocation valve sheet 531, then enters the connecting ring 4, and finally enters the breathing mask to complete the treatment. At this time, the opened anti-suffocation valve sheet 531 covers the inner end of the anti-suffocation valve hole 53, blocking the anti-suffocation valve hole 53, thereby ensuring that the treatment gas will not leak and reducing waste.

[0059] Since the respiratory support device will always provide treatment gas during the use of this embodiment, the anti-suffocation valve sheet 531 will always block the anti-suffocation valve hole 53 to ensure the smooth progress of treatment.

[0060] Since the waste gas discharged by the user cannot be discharged, this embodiment is generally used with a double-branch breathing circuit, and professional medical staff are required to determine its use based on the actual situation of the patient. The double-branch breathing circuit can discharge the CO2 discharged by the user and transport therapeutic gas into the breathing mask to treat the user.

[0061] When the respiratory support device fails and cannot provide therapeutic gas, no air flow enters the elbow 5. Fig. 9 As shown in Figure c, the anti-suffocation valve sheet 531 is restored to its original state and covers the end of the inner ring 54. At this time, the anti-suffocation valve hole 53 is not blocked and is connected to the atmosphere. At this time, when the user inhales, the residual gas in the pipeline will slightly prop up the anti-suffocation valve sheet 531, and the outside air will enter the curved tube limb 5 through the anti-suffocation valve hole 53, ensuring that the user can inhale normally. When exhaling, Fig. 9 As shown in Figure d, the exhaled gas enters the curved tube 5 through the connecting ring 4 and is discharged through the anti-suffocation valve hole 53.

[0062] like Figure 8 As shown, in order to ensure the stable operation of the device, a limiting beam 542 is provided at one end of the inner ring 54 close to the anti-suffocation valve plate 531, and the limiting beam 542 divides the inner ring 54 into two inner channels 544. In a static environment after the inner ring 54 and the elbow 5 are installed, the anti-suffocation valve plate 531 just covers the two inner channels 544 at the top of the inner ring 54. The function of the limiting beam 542 is to prevent the anti-suffocation valve plate 531 from being stuck in the inner ring 54 due to deformation, gravity, excessive pressure and other factors.

[0063] Several convex ribs 541 are designed at the bottom of the outer side of the inner ring sleeve 54. The inner ring sleeve 54 is installed in the curved pipe 5. The four convex ribs 541 and the inner wall of the curved pipe 5 are fixed by friction to ensure the freedom of the curved pipe 5 in the axial direction.

[0064] like Figure 6 As shown, the anti-suffocation valve plate 531 is provided with a mounting portion 532 coupled with the bent pipe 5, wherein the inner ring 54 is provided with a groove position 543 at the position corresponding to the mounting portion 532, wherein after the inner ring 54 is installed in the bent pipe 5, the inner groove position 543 cooperates with the mounting portion 532 to limit the inner ring 54 in the circumferential direction, and the inner groove position 543 also has a certain anti-misalignment effect to prevent the installation orientation of the inner ring 54 from being misplaced.

[0065] The working principle of the anti-suffocation valve is as follows: Fig. 9 shown.

[0066] The air supply of the respiratory support equipment is called "positive pressure ventilation". The gas is output from the respiratory support equipment, passed through the breathing tube, and delivered to the breathing mask to provide therapeutic gas for the patient. If the respiratory support equipment cannot deliver gas due to a malfunction and stops working, the user can still inhale and exhale.

[0067] In a static environment, the breathing valve sheet 531 fits with the inner ring 54 and is substantially flush with the horizontal plane;

[0068] Under positive pressure ventilation: the gas flows through the inner ring 54 and blows open the anti-suffocation valve sheet 531, which adheres to and seals the anti-suffocation valve hole 53, so that the gas can smoothly enter the breathing mask to provide therapeutic gas for the user. To ensure smooth ventilation, the opening angle of the anti-suffocation valve sheet should be designed between 30°C and 80°C, preferably in the range of 45°C to 70°C.

[0069] In case of single fault;

[0070] During inhalation: When the patient inhales, the breathing mask is in an inhalation negative pressure state (in the case of a single fault, the respiratory support equipment does not generate positive pressure ventilation). At this time, the anti-suffocation valve plate 531 is slightly opened upwards, and air mainly enters the breathing mask through the anti-suffocation valve hole 53, and a small amount of gas enters from the connecting pipeline through the anti-suffocation valve plate 531 in the slightly opened state.

[0071] During exhalation: When the patient exhales, the mask is in a state of positive exhalation pressure (in the case of a single fault, the respiratory support device does not generate positive pressure ventilation). At this time, affected by the positive exhalation pressure, the anti-suffocation valve sheet 531 fits with the inner ring 54, closing the inner channel 544 and the connection with the breathing circuit. The purpose of closing the connection with the breathing circuit is to prevent the exhaled CO2 from entering the breathing circuit and forming CO2 accumulation, thereby effectively avoiding repeated inhalation of CO2 during inhalation. CO2 can only be discharged through the anti-suffocation valve hole 53, and the CO2 in the breathing mask is exhausted as much as possible.

[0072] At the same time, the inner ring 54 is also a one-way valve, which can prevent the exhaled waste gas from flowing back into the breathing tube and causing pollution of the waste gas tube.

[0073] Single fault condition without inner ring 54;

[0074] If the breathing mask involved in the present technical solution does not have an inner ring 54, in the event of a single failure of the respiratory support device, when the user exhales, the exhaled gas will open the anti-suffocation valve downward, and the waste gas will enter the breathing circuit along the curved pipe 5 and accumulate and be retained. When inhaling, the carbon dioxide in the tube will be re-inhaled by the patient, increasing the risk of repeated breathing of the waste gas, which may cause suffocation in severe cases.

[0075] Third embodiment

[0076] like Figure 7As shown, it includes a bent pipe 5 of the second embodiment, wherein an exhaust hole 56 is opened on the bent pipe 5 between the anti-suffocation valve hole 53 and the connecting ring 4.

[0077] The use process of this embodiment is as follows Fig. 9 As shown in Figures b, c and d, during the inhalation process, when the respiratory support device fails, different from the second embodiment, the outside air can also enter the bent tube 5 through the exhaust hole 56 when the user inhales, and can also be discharged through the exhaust hole 56 when exhaling.

[0078] In this embodiment, the combination of the bent pipe 5 and the breathing mask forms a mask with exhaust, which can be used for both medical and home ventilators for mild illnesses. Because home ventilators use one-way positive pressure ventilation, and medical ventilators use double-branch breathing circuits or have special leakage valve designs, the exhaust holes of the mask with exhaust help increase exhaust and reduce carbon dioxide when used in home ventilators.

[0079] like Fig.10 and Fig.11 As shown,

[0080] In certain circumstances of clinical use of respiratory masks, patients need to undergo intubation treatment, that is, inserting a medical tube (such as a nasogastric feeding tube, etc.) through the mouth or nostrils. This situation requires professional medical staff to operate according to the patient's actual situation.

[0081] In order to facilitate intubation, a cannula patch 6 is provided on the sealing pad 3. The cannula patch 6 is a rectangular sheet structure with three layers of material. The three layers of material are respectively a base material 61, which is used to connect the outer patch layer 62 and the inner patch layer 63. The three-layer structure is made of a non-woven fabric material with both softness and cost. The outer patch layer 62 is made of a sticky material, preferably a hydrogel, which fits the sealing pad 3 of the breathing mask. The inner patch layer 63 is consistent with the outer patch layer 62, which is used to wrap the medical cannula 31 and fit it to the human skin. There is a protrusion 64 in the middle of the cannula patch 6 that imitates the cannula 31 to facilitate the placement of the cannula and has better sealing.

[0082] Specifically, in this embodiment, the thickness of the outer layer 62 is 1-2 mm, and the thickness of the inner layer 63 is 4-6 mm.

[0083] Hydrogel is a soft, skin-friendly material commonly used in medical products, and has a certain degree of stickiness. The outer layer 62 is thin because it fits the mask, and can only stick to the sealing pad to ensure the sealing between the mask and the cannula sticker 6. The inner layer 63 needs to wrap the cannula and contact the patient's skin, so it is thicker and has better wrapping to fill the gap between the cannula and the cannula sticker 6. Because hydrogel has good softness, it is easy to be squeezed and deformed by force. When the patient uses the respiratory mask, the mask is squeezed by tension, so the gaps at both ends of the cannula sticker 6 are filled.

[0084] It should be understood that the above description of the specific embodiments of the present invention is only for illustrating the technical route and features of the present invention, and its purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, but the present invention is not limited to the above specific implementation methods. Any changes or modifications made within the scope of the claims of the present invention should be included in the protection scope of the present invention.

Claims

1. A mask ventilation system with convenient connector replacement, characterized in that: The invention comprises a breathing mask (1), a connecting ring (4) and a curved pipe (5), wherein the curved pipe (5) is connected to a breathing support device, the breathing mask (1) is provided with a connecting hole (12) for clamping with the connecting ring (4), the curved pipe (5) is movably provided with a clamping hook (511) for clamping with the connecting ring (4), a clamping ring (41) is provided on one end side surface of the connecting ring (4), and a buckle ring (43) is provided on the other end side surface, a limiting ring (42) is provided on the outer side surface of the connecting ring (4) between the buckle ring (43) and the clamping ring (41), a buckle groove (45) is formed between the limiting ring (42) and the buckle ring (43), the clamping ring (41) is clamped with the connecting hole (12), the clamping hook (511) is clamped with the buckle groove (45), and a U-shaped groove (44) penetrating the clamping ring (41) is provided on the side surface of one end of the connecting ring (4) close to the clamping ring (41).

2. A mask ventilation system with convenient connector replacement according to claim 1, characterized in that: The curved tube (5) is provided with a plurality of evenly distributed quick-release handles (51), one end of each quick-release handle (51) is formed with a hook (511), and the end surface of the curved tube (5) is in contact with the end surface of the buckle (43).

3. A mask ventilation system with convenient connector replacement according to claim 2, characterized in that: The quick-release handle (51) is connected to the curved pipe (5) via a deformation portion (512).

4. A mask ventilation system with convenient connector replacement according to claim 1, characterized in that: The end surface of the connecting ring (4) is provided with an extension portion (46) which is plugged into the bent pipe (5).

5. A mask ventilation system with convenient connector replacement according to claim 1, characterized in that: The breathing mask (1) comprises a frame, on which a forehead pad (2) and a sealing pad (3) are arranged, and a connecting hole (12) is opened on the frame (1).

6. A mask ventilation system with convenient connector replacement according to claim 5, characterized in that: The sealing pad (3) is provided with a tube insertion sticker (6), a protrusion (64) is provided in the middle of the tube insertion sticker (6), and a tube insertion sticker (31) is inserted into the protrusion (64).

7. A mask ventilation system with convenient connector replacement according to claim 1, characterized in that: An inner ring (54) is arranged in the curved pipe (5), and an anti-suffocation valve sheet (531) and an anti-suffocation valve hole (53) are arranged in the curved pipe (5) between the inner ring (54) and the connecting ring (4), and the anti-suffocation valve sheet (531) covers the end surface of the inner ring (54).

8. A mask ventilation system with convenient connector replacement according to claim 7, characterized in that: A limiting beam (542) is provided at the end of the inner ring (54) corresponding to the anti-suffocation valve plate (531).

9. A mask ventilation system with convenient connector replacement according to claim 7, characterized in that: The anti-suffocation valve plate (531) is coupled to the bent pipe (5) via a mounting portion (532), and an adaptable groove position (543) is provided on the inner ring sleeve (54) at a position corresponding to the mounting portion (532).

10. A mask ventilation system with convenient connector replacement according to claim 7, characterized in that: The bent pipe (5) is provided with an exhaust hole (56).

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