Portable folding type breathing air bag device

Abstract

The invention relates to the technical field of medical instruments, and discloses a portable folding type breathing air bag device which comprises a breathing mask and connecting plates, a conveying pipe is arranged outside the breathing mask, a filter element is arranged in the conveying pipe, the other end of the conveying pipe is connected with a switching valve, and two contraction air bags are arranged between the two connecting plates. The tops of the two contraction air bags are connected with an air inlet pipe and an expiration pipe in a sealed mode respectively, the other end of the air inlet pipe and the other end of the expiration pipe are connected with a switching valve, the switching valve comprises a three-way spherical shell, a rotating ball valve, a rotating piece, a communicating pipe and a flow dividing pipe, the rotating ball valve comprises a valve body, and an air flow channel and an arc-shaped flow channel are formed in the valve body. A plurality of movable cavities are formed in the valve body, and one ends of the movable cavities communicate with the arc-shaped flow channel. According to the oxygen inhalation device, the oxygen conveying efficiency in the inhalation process is guaranteed, the cleanliness of conveyed oxygen is improved by means of the filtering characteristic of the filter element and the one-way conduction characteristic of the one-way valve, and sufficient and pure oxygen support is provided for a patient.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a portable foldable breathing bag device. Background Technology

[0002] Respiratory bag devices are widely used in medical emergency care and daily assisted breathing for patients with respiratory diseases to provide patients with oxygen or assist gas exchange. Especially in scenarios requiring portable equipment, such as field rescue and patient transport, there are high requirements for the portability, gas delivery efficiency and oxygen cleanliness of the device. The device needs to be able to quickly deliver sufficient and pure oxygen to patients, and be easy to carry and operate.

[0003] Existing breathing bag devices mostly employ a simple structure where the bag is directly connected to the breathing mask. Gas delivery is achieved by manually squeezing the bag repeatedly, utilizing its elastic return to allow for inhalation, and by squeezing the bag to expel gas. Their one-way valves are often single-spring valve core structures, which are prone to poor sealing and untimely valve core return during airflow switching. This not only leads to backflow during oxygen delivery, reducing oxygen delivery efficiency, but also makes it easy for the patient's exhaled waste gas to mix with the oxygen to be delivered, affecting the oxygen cleanliness.

[0004] Therefore, a portable foldable breathing bag device is proposed to address the above problems. Summary of the Invention

[0005] To overcome the above deficiencies, the present invention provides a portable foldable breathing bag device, which aims to improve the problems of poor sealing and untimely valve core reset in some existing breathing bag devices, resulting in low oxygen delivery efficiency and affected oxygen cleanliness.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A portable foldable breathing bag device includes a breathing mask and connecting plates. The breathing mask is provided with a delivery tube on the outside and a filter element is provided inside the delivery tube. The other end of the delivery tube is connected to a switching valve. Two contraction airbags are provided between the two connecting plates. The tops of the two contraction airbags are respectively sealed and connected to an inlet tube and an exhalation tube, and the other ends of the inlet tube and the exhalation tube are connected to the switching valve.

[0008] The switching valve includes a three-way ball shell, a rotary ball valve, a rotating component, a connecting pipe, and a diverting pipe. The rotary ball valve includes a valve body, which has an airflow channel and an arc-shaped flow channel inside. The valve body also has multiple movable cavities, one end of which is connected to the arc-shaped flow channel. A counterweight ball is installed inside the movable cavity, and an anti-detachment ring is installed at the end of the movable cavity. A connecting cavity is opened at the end of the arc-shaped channel, and a barrier valve is slidably connected inside the connecting cavity. A connecting groove is opened on the outside of the barrier valve.

[0009] As a further description of the above technical solution:

[0010] The rotating component includes a rotating shaft, one end of which is fixedly connected to the outside of the valve body, and the other end of which is rotatably connected to the inside of the three-way ball housing. A torsion spring is provided on the outside of the rotating shaft to limit the rotation angle of the valve body. A rotating wheel is fixedly connected to the outside of the rotating shaft, and multiple balls are provided between the outside of the rotating wheel and the inside of the three-way ball housing.

[0011] As a further description of the above technical solution:

[0012] The connecting pipe is located at the top of the three-way ball shell and the top of the connecting pipe is threaded to the bottom of the delivery pipe. The other ends of the exhalation pipe and the inhalation pipe are respectively connected to two branch pipes.

[0013] As a further description of the above technical solution:

[0014] Two diverter pipes are symmetrically distributed on both sides of the three-way spherical shell and the angle between them and the connecting pipe is 120 degrees. The angle between the central axes of the two ends of the airflow channel is set to 120 degrees.

[0015] As a further description of the above technical solution:

[0016] Both the inlet pipe and the exhalation pipe are equipped with a one-way valve assembly. The one-way valve assembly includes a valve seat fixedly connected inside the inlet pipe and the exhalation pipe. Multiple limit rods are fixedly connected to one side of the valve seat. A sliding ring is slidably connected to the outside of the limit rod. A conical valve core is provided on the outside of the sliding ring. A spring is provided between the sliding ring and the outer end of the limit rod.

[0017] As a further description of the above technical solution:

[0018] The one-way valve assembly also includes an external pipe that connects to an external oxygen cylinder, etc. One end of each of the two external pipes is fixedly connected to the outside of the inlet pipe and the exhalation pipe, respectively. A valve seat 2 is fixedly connected inside the external pipe. Multiple limit rods 2 are slidably connected inside the valve seat 2. A sliding ring 2 is fixedly connected to one end of each limit rod 2. A conical valve core 2 is provided on the outside of the sliding ring 2, and a spring 2 is provided on the outside of the limit rod 2.

[0019] As a further description of the above technical solution:

[0020] The one-way valve assembly inside the inlet pipe and the exhalation pipe are installed in opposite directions. The outer diameter of the sliding ring II inside the inlet pipe is the same as the inner diameter of the outer pipe, and the outer diameter of the sliding ring II inside the exhalation pipe is slightly smaller than the inner diameter of the outer pipe.

[0021] As a further description of the above technical solution:

[0022] The breathing mask, the constricting air bag, the inlet tube and the exhalation tube can all be retracted and folded, and the delivery tube, the switching valve, the inlet tube, the exhalation tube and the air bag are all equipped with sealing rings.

[0023] The present invention has the following beneficial effects:

[0024] 1. In this invention, the inflation action of the contraction cuff drives the counterweight ball inside the rotating ball valve to roll, and the rotating component links the valve body to rotate. At the same time, because the external passage pipe on the outside of the inlet pipe opens and the one-way valve inside the inlet pipe closes, oxygen from the oxygen cylinder is efficiently filled into the contraction cuff. When the cuff is pressed subsequently, the one-way valve inside the inlet pipe opens and the one-way valve on the external passage pipe closes. The high-pressure airflow drives the barrier valve to move inward, the counterweight ball to reset, and the torsion spring pulls the valve body back to its initial position, so that oxygen is delivered to the breathing mask through the airflow channel. This not only ensures the oxygen delivery efficiency during inhalation, but also improves the cleanliness of the delivered oxygen by using the filter element filtration and the one-way conduction characteristics of the one-way valve, providing patients with sufficient and pure oxygen support.

[0025] 2. In this invention, by rotating the ball valve back and forth and alternately inflating and compressing the air bladder, combined with the reverse opening and closing action of the one-way valve group to drive the counterweight ball to reset and the airflow channel to switch precisely, the device can continuously perform the cycle of inhalation and exhalation. At the same time, the retractable and foldable structural design of each component of the device makes it easy to carry and store, and can continuously provide stable respiratory support for patients in different scenarios, improving the convenience and endurance of use. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of the portable foldable breathing bag device proposed in this invention.

[0027] Figure 2 This is a schematic diagram of the connecting tube of the portable foldable breathing bag device proposed in this invention.

[0028] Figure 3 This is a schematic diagram of the three-way ball shell of the portable foldable breathing bag device proposed in this invention.

[0029] Figure 4 This is a schematic diagram of the rotating ball valve of the portable foldable breathing bag device proposed in this invention.

[0030] Figure 5 This is a schematic diagram of the one-way valve assembly of the portable foldable breathing bag device proposed in this invention.

[0031] Figure 6 for Figure 3 Enlarged view of point A in the middle;

[0032] Figure 7 for Figure 4Enlarged view of point B in the middle;

[0033] Figure 8 for Figure 5 A magnified view of point C in the middle.

[0034] Legend:

[0035] 1. Breathing mask; 2. Delivery tube; 3. Switching valve; 31. Three-way ball valve; 32. Rotary ball valve; 321. Valve body; 322. Airflow channel; 323. Arc-shaped flow channel; 324. Movable chamber; 325. Counterweight ball; 326. Anti-detachment ring; 327. Connecting chamber; 328. Barrier valve; 329. Connecting groove; 33. Rotating component; 331. Shaft; 332. Rotating wheel; 333. Ball bearing; 334. Torsion spring; 34. Connecting pipe; 35. Diverting pipe; 4. Connecting plate; 5. Contractile airbag; 6. Inlet pipe; 7. Exhalation pipe; 8. One-way valve assembly; 801. Valve seat one; 802. Limiting rod one; 803. Sliding ring one; 804. Conical valve core one; 805. Spring one; 806. External pipe; 807. Valve seat two; 808. Limiting rod two; 809. Sliding ring two; 810. Conical valve core two; 811. Spring two; 9. Filter element. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Reference Figures 1 to 8The present invention provides an embodiment of a portable foldable breathing bag device, comprising a breathing mask 1 and a connecting plate 4. The breathing mask 1 provides a gas access channel for the patient's airway, allowing processed oxygen to smoothly enter the patient's body to meet breathing needs, while also receiving the mixed gas exhaled by the patient to provide an initial channel for subsequent expulsion. The connecting plate 4 serves as a receiving structure for external forces, directly controlling the inflation and compression states of the two contractile air bags 5 by pulling or pressing external forces, providing a power basis for gas delivery and expulsion within the device. The external part of the breathing mask 1 is equipped with a delivery tube 2, which establishes a gas transmission path between the breathing mask 1 and the switching valve 3. This allows the oxygen delivered by the switching valve 3 to be directed to the breathing mask 1, and the mixed gas exhaled by the patient to be directed from the breathing mask 1 to the switching valve 3, achieving bidirectional gas transmission. The delivery tube 2 contains a filter element 9, which filters the oxygen entering the breathing mask 1, removing any impurities and particles to ensure the cleanliness of the oxygen delivered to the patient. The other end of the delivery tube 2 is connected to the switching valve 3, which acts as the core control point for gas flow within the device. Through internal structural action, it switches the airflow channels 322 between the inlet tube 6, the exhalation tube 7, and the delivery tube 2, ensuring that the oxygen delivery and mixed gas exhaust paths are not confused. Two contraction airbags 5 are located between the two connecting plates 4. The two air bladders 5 serve as oxygen storage and mixed gas storage devices, respectively. One bladder stores oxygen introduced from the oxygen cylinder, while the other stores the mixed gas exhaled by the patient. The cycle of oxygen delivery and mixed gas expulsion is completed through alternating inflation and compression. The tops of the two air bladders 5 are respectively sealed with an inlet pipe 6 and an exhalation pipe 7, and the other ends of the inlet pipe 6 and the exhalation pipe 7 are connected to the switching valve 3. The inlet pipe 6 forms an oxygen transmission channel between the oxygen cylinder and the air bladder 5, and between the air bladder 5 and the switching valve 3, allowing oxygen from the oxygen cylinder to enter the air bladder 5 and the switching valve 3 in sequence, providing a directional pathway for oxygen delivery. The exhalation pipe 7 forms a mixed gas transmission channel between the breathing mask 1 and the air bladder 5, and between the air bladder 5 and the external environment, allowing the mixed gas exhaled by the patient to enter the air bladder 5 in sequence and then be expelled to the outside of the device, achieving directional expulsion of the mixed gas. The breathing mask 1, the constricting air bag 5, the inlet tube 6 and the exhalation tube 7 can all be retracted and folded. The delivery tube 2, the switching valve 3, the inlet tube 6, the exhalation tube 7 and the air bag are all equipped with sealing rings. The sealing rings fill the gaps between the components, enhance the sealing of the connection, prevent gas leakage during transmission, and ensure stable air pressure inside the device.

[0038] The switching valve 3 includes a three-way ball housing 31, a rotary ball valve 32, a rotating component 33, a connecting pipe 34, and a diverter pipe 35. The three-way ball housing 31 serves as the external support structure for the switching valve 3, providing installation space for the rotary ball valve 32, the rotating component 33, the connecting pipe 34, and the diverter pipe 35, while also limiting the flow range of the internal gas to prevent gas from escaping from the switching valve 3. The rotary ball valve 32, as the core actuating component of the switching valve 3, changes the orientation of the internal airflow channel 322 through its own rotation, thereby switching the transmission path of oxygen and mixed gas and ensuring that different gases flow to the corresponding channels as needed. The rotating component 33 provides support and reset functions for the rotation of the rotary ball valve 32, ensuring stable rotation of the rotary ball valve 32 and resetting it to its initial position after rotation, thus realizing the cyclic operation of the rotary ball valve 32. The connecting pipe 34 connects... The three-way ball shell 31 and the delivery pipe 2 form a gas communication channel between the switching valve 3 and the delivery pipe 2, allowing oxygen in the switching valve 3 to enter the delivery pipe 2 or mixed gas in the delivery pipe 2 to enter the switching valve 3. The diverter pipe 35 connects the inlet pipe 6 to the three-way ball shell 31 and the exhalation pipe 7 to the three-way ball shell 31, forming a gas channel between the inlet pipe 6, the exhalation pipe 7 and the switching valve 3. Its design with a 120-degree angle to the connecting pipe 34 is adapted to the angle of the airflow channel 322, ensuring that the gas enters the switching valve 3 smoothly. The connecting pipe 34 is located at the top of the three-way ball shell 31 and the top of the connecting pipe 34 is threaded to the bottom of the delivery pipe 2. The other ends of the exhalation pipe 7 and the inlet pipe 6 are connected to the two diverter pipes 35 respectively. The two diverter pipes 35 are symmetrically distributed on both sides of the three-way ball shell 31 and have an angle of 120 degrees with the connecting pipe 34.

[0039] The rotary ball valve 32 includes a valve body 321. The valve body 321 serves as the main frame of the rotary ball valve 32, providing a mounting platform for internal structures such as the airflow channel 322, the arc-shaped flow channel 323, the movable chamber 324, and the connecting chamber 327. It supports the coordinated operation of these structures to achieve gas flow direction control. The valve body 321 has an airflow channel 322 and an arc-shaped flow channel 323 inside. The airflow channel 322 serves as the main gas transmission channel, and its 120-degree angle design at both ends allows for precise alignment with different branch pipes 35 and connecting pipes 34 when the valve body 321 rotates, achieving directional transmission of oxygen or mixed gases. The arc-shaped flow channel 324... 23 provides a path for the auxiliary flow of gas within the valve body 321, and works in conjunction with the sliding of the barrier valve 328 to open and close the channel, providing airflow conditions for the rolling of the counterweight ball 325. The included angle between the central axes of the two ends of the airflow channel 322 is set to 120 degrees, and the valve body 321 has multiple movable cavities 324 with one end connected to the arc-shaped flow channel 323. The movable cavities 324 provide space for the placement and rolling of the counterweight ball 325, limit the range of motion of the counterweight ball 325, and ensure that the counterweight ball 325 can stably achieve the rolling action. The counterweight ball 325 is set inside the movable cavity 324, and the counterweight ball 325 moves through its own... The rolling mechanism changes the position of the ball within the movable chamber 324, disrupting or restoring the balance of the valve body 321, providing a trigger condition for the rotation of the valve body 321, and assisting in the switching of the airflow channel 322. An anti-detachment ring 326 is provided at the end of the movable chamber 324 to prevent the counterweight ball 325 from detaching from the movable chamber 324 during rolling, limiting the maximum rolling displacement of the counterweight ball 325 and ensuring that the counterweight ball 325 always functions within the movable chamber 324. A connecting chamber 327 is provided at the end of the arc-shaped channel, providing sliding space for the isolation valve 328, ensuring that the isolation valve 328 can... The valve body 321 is equipped with a barrier valve 328 that slides smoothly along the connecting cavity 327, providing a structural basis for the opening and closing of the arc-shaped flow channel 323. The barrier valve 328 is slidably connected inside the connecting cavity 327. The barrier valve 328 changes its position by sliding along the connecting cavity 327, and works with the outer connecting groove 329 to open and close the arc-shaped flow channel 323, controlling the flow state of the gas in the arc-shaped flow channel 323. The outer side of the barrier valve 328 is provided with a connecting groove 329. The connecting groove 329 changes its relative position with the arc-shaped flow channel 323 to connect or block the gas between the arc-shaped flow channel 323 and the outside, and assists in regulating the airflow path in the valve body 321.

[0040] The rotating component 33 includes a rotating shaft 331, which provides a rotation axis 331 for the valve body 321, ensuring that the valve body 321 can rotate stably around the rotating shaft 331 and guaranteeing the accuracy of the rotation action. One end of the rotating shaft 331 is fixedly connected to the outside of the valve body 321, and the other end of the rotating shaft 331 is rotatably connected to the inside of the three-way ball housing 31. A torsion spring 334 is provided on the outside of the rotating shaft 331 to limit the rotation angle of the valve body 321. The torsion spring 334 has an elastic reset function, which not only limits the maximum rotation angle of the valve body 321, but also generates a reverse torsion band after the valve body 321 rotates. The valve body 321 rotates back to its initial position, achieving automatic reset. A rotating wheel 332 is fixedly connected to the outer side of the rotating shaft 331. The rotating wheel 332 reduces the frictional resistance between the rotating shaft 331 and the three-way ball housing 31, making the rotation of the valve body 321 smoother and reducing mechanical losses during rotation. In addition, multiple balls 333 are arranged between the outer side of the rotating wheel 332 and the inside of the three-way ball housing 31. The balls 333 further reduce the contact friction between the rotating wheel 332 and the three-way ball housing 31, improving the smoothness of the rotation of the rotating wheel 332 and ensuring the stable and reliable rotation of the valve body 321.

[0041] Both the intake pipe 6 and the exhalation pipe 7 are equipped with one-way valve assemblies 8. These one-way valve assemblies 8 control the unidirectional flow of gas within the intake pipe 6 and exhalation pipe 7, preventing backflow and ensuring that the oxygen and mixed gas transmission paths are not confused. The one-way valve assembly 8 includes a valve seat 801 fixedly connected inside the intake pipe 6 and exhalation pipe 7. The valve seat 801 provides an installation reference for the limiting rod 802, sliding ring 803, conical valve core 804, and spring 805, limiting the relative positions of each component and ensuring the structural stability of the one-way valve assembly 8. Multiple limiting rods 802 are fixedly connected to one side of the valve seat 801. The limiting rods 802 guide the sliding of the sliding ring 803, restricting the sliding direction of the sliding ring 803 and ensuring that the sliding ring 803 moves stably along a fixed trajectory. A sliding ring 803 is slidably connected to the outer side of the limiting rod 802. The sliding ring 803 drives the conical valve core 804 to move synchronously, realizing the contact or separation of the conical valve core 804 with the valve seat 801. The conical valve core 804 is provided on the outer side of the sliding ring 803. The conical valve core 804 controls the opening and closing of the internal passage of the air inlet pipe 6 and the exhalation pipe 7 by contacting or separating with the valve seat 801, ensuring that the gas can only flow in the set direction and preventing gas backflow. A spring 805 is provided between the sliding ring and the outer end of the limiting rod. The spring 805 provides elastic restoring force for the sliding ring 803. When there is no external force, it pushes the sliding ring 803 to drive the conical valve core 804 to contact the valve seat 801 to keep the passage closed. After the external force disappears, it helps the valve core to reset.

[0042] The one-way valve assembly 8 also includes an external pipe 806 connected to an external oxygen cylinder, etc. The external pipe 806 provides an external channel for the oxygen inlet device or mixed gas outlet device, enabling gas exchange between the device and the outside environment. One end of each of the two external pipes 806 is fixedly connected to the outside of the inlet pipe 6 and the exhalation pipe 7, respectively. A valve seat 807 is fixedly connected inside the external pipe 806. The valve seat 807 provides a mounting base for the limit rod 808, the sliding ring 809, the conical valve core 810, and the spring 811, limiting the installation position of each component and ensuring the structural stability of the one-way valve inside the external pipe 806. Multiple limit rods 808 are slidably connected inside the valve seat 807. The limit rods 808 guide the sliding of the sliding ring 809, restricting the sliding direction of the sliding ring 809 and ensuring the stability of the sliding ring 809. 809 moves along a fixed path. One end of the limiting rod 808 is fixedly connected to a sliding ring 809. The sliding ring 809 drives the conical valve core 810 to move synchronously, realizing the contact or separation of the conical valve core 810 and the valve seat 807. The conical valve core 810 is provided on the outside of the sliding ring 809. The conical valve core 810 controls the opening and closing of the internal passage of the external pipe 806 by contacting or separating from the valve seat 807, ensuring that the gas can only flow in the set direction and preventing gas leakage in reverse. The limiting rod 808 is provided with a spring 811 on the outside. The spring 811 provides elastic restoring force for the sliding ring 809. When there is no external force, it pushes the sliding ring 809 to drive the conical valve core 810 to contact the valve seat 807 to keep the passage closed. After the external force disappears, it helps the valve core to reset.

[0043] The one-way valve assembly 8 inside the intake pipe 6 and the exhalation pipe 7 are installed in opposite directions. This opposite installation direction ensures that the one-way valve assembly 8 in the intake pipe 6 only allows oxygen to flow from the external tube 806 to the constriction bladder 5 and then to the switching valve 3, while the one-way valve assembly 8 in the exhalation pipe 7 only allows the mixed gas to flow from the switching valve 3 to the constriction bladder 5 and then to the outside, achieving unidirectional gas flow and avoiding airflow chaos. The outer diameter of the sliding ring 809 inside the intake pipe 6 is the same as the inner diameter of the external tube 806. This dimensional design ensures that the conical... The conical valve core 810 can fit tightly against the inner wall of the external tube 806, enhancing the sealing performance of the external tube 806 when closed and preventing oxygen from leaking from the external tube 806 during transmission. In addition, the outer diameter of the sliding ring 809 inside the exhalation tube 7 is slightly smaller than the inner diameter of the external tube 806. This size design ensures the normal sealing and sliding of the conical valve core 810 inside the external tube 806 of the exhalation tube 7, while reserving an appropriate gap for the discharge of the mixed gas, avoiding resistance caused by the narrow channel when the mixed gas is discharged, and ensuring the smooth discharge of the mixed gas. Working principle: When the patient needs to inhale, first pull the connecting plate 4 to cause the two contraction cuffs 5 to start inflating. At this time, the cuff corresponding to the expiratory tube 7 draws out the mixed gas inside the original expiratory cuff device, creating negative pressure inside the expiratory tube 7. The negative pressure inside the expiratory tube 7 pulls the internal barrier valve 328 to slide outward. The connecting groove 329 on the outside of the barrier valve 328 then opens the arc-shaped flow channel 323 inside the rotating ball valve 32. Thus, under the suction of negative pressure, the counterweight ball 325 in the movable cavity 324 inside the valve body 321 of the rotating ball valve 32 rolls outward, breaking the original balance state of the valve body 321. Under the action of the rotating component 33 (the torsion spring 334 on the outside of the rotating shaft 331 cooperates with the rotating wheel 332 and the ball 333), the valve body 321 rotates 240 degrees. At this time, the two ends of the airflow channel 322 inside the valve body 321 are aligned with the diverter pipe 35 and the connecting pipe 34 corresponding to the exhalation pipe 7. At this time, due to the negative pressure, the valve seat 801 inside the exhalation pipe 7 separates from the conical valve core, thereby opening the passage so that the mixed gas in the breathing mask 1 can be drawn out.

[0044] Simultaneously, the constriction air bladder 5 corresponding to the intake pipe 6 is inflated with oxygen. Inside the external pipe 806 outside the intake pipe 6, the valve seat 807 restricts the sliding of the limit rod 808. The conical valve core 810 outside the sliding ring 809 opens under the force of the spring 811 and the airflow. At the same time, the one-way valve inside the intake pipe 6 is closed. The conical valve core 804 is tightly attached to the valve seat 801 under the force of the spring 805, so that oxygen in the oxygen cylinder outside the intake pipe 6 can enter the intake pipe 6 through the external pipe 806 and inflate the constriction air bladder 5.

[0045] Press the connecting plate 4 again to compress the two contraction airbags 5. The air pressure inside the contraction airbag 5 corresponding to the air intake pipe 6 increases, pushing the one-way valve inside the air intake pipe 6 to open (the conical valve core 804 overcomes the elastic force of the spring 805, causing the sliding ring 803 to slide along the limit rod 802), thus forming a passage inside the air intake pipe 6; while the one-way valve inside the external pipe 806 closes (the conical valve core 810 resets under the elastic force of the spring 811, blocking the passage of the external pipe 806). At this time, the high pressure generated inside the air intake pipe 6 due to the compression of the airbags pushes the internal blocking valve 328 to move inward, and the high-pressure airflow pushes the counterweight ball 325 in the movable chamber 324 to reset; and the torsion spring 334 in the rotating part 33 generates a reset torque, causing the valve body 321 to rotate and reset, so that the airflow channel 322 is aligned with the diverter pipe 35 corresponding to the air intake pipe 6 and the connecting pipe 34 corresponding to the delivery pipe 2. Oxygen enters the three-way ball housing 31 of the switching valve 3 through the inlet pipe 6. Since the two ends of the airflow channel 322 inside the valve body 321 of the rotating ball valve 32 in the switching valve 3 are aligned with the corresponding diverter pipe 35 of the inlet pipe 6 and the connecting pipe 34 connected to the delivery pipe 2, the oxygen enters the connecting pipe 34 through the airflow channel 322, and then enters the breathing mask 1 through the delivery pipe 2 with the filter element 9 inside, thus meeting the patient's breathing needs.

[0046] Simultaneously, the one-way valve inside the expiratory tube 7 closes, while the one-way valve on its outer external tube 806 opens. Thus, the mixed gas stored in the contractile airbag 5 is delivered out through the external tube 806 outside the expiratory tube 7.

[0047] When the patient needs to exhale, the constricting cuff 5 inside the expiratory tube 7 re-inflates, creating negative pressure in the expiratory tube 7 again. The counterweight ball 325 then causes the valve 321 to rotate again, connecting the airflow channel 322 to the expiratory tube 7 to extract the exhaled carbon dioxide. Simultaneously, the constricting cuff 5 in the inlet tube 6 replenishes oxygen in preparation for the next oxygen inhalation. This completes one cycle of inhalation and exhalation, and respiratory support can be continuously provided to the patient following this procedure.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A portable foldable breathing bag device, comprising a breathing mask (1) and a connecting plate (4), characterized in that: The breathing mask (1) is provided with a delivery tube (2) on the outside and a filter element (9) inside the delivery tube (2). The other end of the delivery tube (2) is connected to a switching valve (3). Two constriction airbags (5) are provided between the two connecting plates (4). The top of the two constriction airbags (5) are respectively sealed and connected to an inlet pipe (6) and an exhalation pipe (7), and the other end of the inlet pipe (6) and the exhalation pipe (7) are connected to the switching valve (3). The switching valve (3) includes a three-way ball shell (31), a rotary ball valve (32), a rotating component (33), a connecting pipe (34), and a diverter pipe (35). The rotary ball valve (32) includes a valve body (321). An airflow channel (322) and an arc-shaped flow channel (323) are provided inside the valve body (321). Multiple movable cavities (324) are provided inside the valve body (321), with one end connected to the arc-shaped flow channel (323). A counterweight ball (325) is provided inside the movable cavity (324). An anti-detachment ring (326) is provided at the end of the movable cavity (324). A connecting cavity (327) is provided at the end of the arc-shaped channel. A barrier valve (328) is slidably connected inside the connecting cavity (327). A connecting groove (329) is provided on the outside of the barrier valve (328).

2. The portable foldable breathing bag device according to claim 1, characterized in that: The rotating component (33) includes a rotating shaft (331), one end of which is fixedly connected to the outside of the valve body (321), and the other end of which is rotatably connected to the inside of the three-way ball shell (31). A torsion spring (334) for limiting the rotation angle of the valve body (321) is provided on the outside of the rotating shaft (331). A rotating wheel (332) is fixedly connected to the outside of the rotating shaft (331), and multiple balls (333) are provided between the outside of the rotating wheel (332) and the inside of the three-way ball shell (31).

3. The portable foldable breathing bag device according to claim 1, characterized in that: The connecting pipe (34) is located at the top of the three-way ball shell (31) and the top of the connecting pipe (34) is threaded to the bottom of the delivery pipe (2). The other ends of the exhalation pipe (7) and the inhalation pipe (6) are respectively connected to the two branch pipes (35).

4. The portable foldable breathing bag device according to claim 1, characterized in that: Two diverter pipes (35) are symmetrically distributed on both sides of the three-way ball shell (31) and the angle between them and the connecting pipe (34) is 120 degrees. The angle between the central axes of the two ends of the airflow channel (322) is set to 120 degrees.

5. The portable foldable breathing bag device according to claim 1, characterized in that: Both the inlet pipe (6) and the exhalation pipe (7) are equipped with a one-way valve assembly (8). The one-way valve assembly (8) includes a valve seat (801) fixedly connected inside the inlet pipe (6) and the exhalation pipe (7). A plurality of limit rods (802) are fixedly connected to one side of the valve seat (801). A sliding ring (803) is slidably connected to the outside of the limit rod (802). A conical valve core (804) is provided on the outside of the sliding ring (803). A spring (805) is provided between the sliding ring and the outer end of the limit rod.

6. The portable foldable breathing bag device according to claim 5, characterized in that: The one-way valve assembly (8) also includes an external pipe (806) connected to an external oxygen cylinder, etc. One end of the two external pipes (806) is fixedly connected to the outside of the inlet pipe (6) and the exhalation pipe (7), respectively. A valve seat (807) is fixedly connected inside the external pipe (806). Multiple limit rods (808) are slidably connected inside the valve seat (807). A sliding ring (809) is fixedly connected to one end of the limit rod (808). A conical valve core (810) is provided on the outside of the sliding ring (809), and a spring (811) is provided on the outside of the limit rod (808).

7. The portable foldable breathing bag device according to claim 6, characterized in that: The one-way valve group (8) inside the air inlet pipe (6) and the air outlet pipe (7) are installed in opposite directions. The outer diameter of the sliding ring 2 (809) inside the air inlet pipe (6) is the same as the inner diameter of the external pipe (806), and the outer diameter of the sliding ring 2 (809) inside the air outlet pipe (7) is slightly smaller than the inner diameter of the external pipe (806).

8. The portable foldable breathing bag device according to claim 1, characterized in that: The breathing mask (1), the constricting airbag (5), the inlet tube (6) and the exhalation tube (7) can all be retracted and folded, and sealing rings are provided at the connection points between the delivery tube (2), the switching valve (3), the inlet tube (6), the exhalation tube (7) and the airbag.

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