A combined tube system for integrating a ventilator with a nebulizer

Abstract

The application discloses a combined pipeline system integrated with a respirator and an atomizer, and relates to the technical field of medical equipment.The combined pipeline system comprises a flow-converging connector, wherein the flow-converging connector comprises a horizontal main channel, an inclined branch pipe, a sunken liquid collecting bevel and a sunken liquid collecting and storing bin; the inclined branch pipe is arranged at the top middle part of the horizontal main channel; and the sunken liquid collecting bevel is arranged at the bottom of the horizontal main channel and close to the side of the air outlet end.The application guides and converges the condensate on the wall of the horizontal main channel to the sunken liquid collecting and storing bin through the sunken liquid collecting bevel in the flow-converging connector, and then discharges the condensate through a liquid discharging mechanism, thereby solving the problem of liquid accumulation in the internal corner of the existing connector, collecting the condensate on the wall to the sunken liquid collecting and storing bin directly below, discharging the accumulated liquid through the liquid discharging mechanism, preventing the accumulated liquid from flowing back into the pipeline of the respirator host, and eliminating the backflow hidden danger caused by the positive pressure impact from the structure, and ensuring the safe operation of the equipment.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically to a combined tubing system integrating a ventilator and a nebulizer. Background Technology

[0002] A ventilator is a life support medical device that assists or even replaces a patient's spontaneous breathing, continuously delivering oxygen and expelling carbon dioxide to maintain normal ventilation. A nebulizer, on the other hand, can agitate liquid medications into fine aerosol particles, making it easier for patients to inhale directly through the respiratory tract for targeted airway drug delivery. For critically ill patients with respiratory failure, severe lung infections, or other conditions characterized by weak spontaneous breathing and difficulty breathing, self-administered nebulizer inhalation often results in insufficient inhalation strength, limited drug intake, and poor treatment efficacy. By integrating a nebulizer into the ventilator's breathing circuit, nebulized medication can be delivered simultaneously with uninterrupted ventilation and oxygen supply from the ventilator. The entire treatment process does not require interruption of ventilation support, ensuring stable breathing for the patient and improving the deposition and absorption rate of drugs in the bronchi and lungs, making it more suitable for the clinical treatment of critically ill patients.

[0003] The existing nebulizer inlet connector of the combined tubing is an integrated fixed axial opening structure. After the drug is nebulized, the tiny droplets generated are very easy to accumulate at the inner corner of the connector, forming a dead zone of liquid accumulation. This accumulated liquid cannot be smoothly discharged with the airflow, which will not only continuously reduce the efficiency of nebulization drug delivery, but also poses a risk that the accumulated liquid will backflow into the ventilator main unit tubing due to the impact of positive ventilation pressure. Simply adjusting the ventilation parameters or replacing the ordinary hose connector cannot completely eliminate this structural problem. Summary of the Invention

[0004] The purpose of this invention is to provide a combined tubing system integrating a ventilator and a nebulizer to solve the structural defects of existing nebulizer connectors, such as easy accumulation of medication inside, poor efficacy, and backflow of medication.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a combined tubing system integrating a ventilator and a nebulizer, including a manifold connector;

[0006] The manifold includes a horizontal main channel, an inclined branch pipe, a sinking liquid collection bevel, and a sinking liquid collection and storage tank. The inclined branch pipe is located at the top center of the horizontal main channel. The sinking liquid collection bevel is located at the bottom of the horizontal main channel and near the gas outlet. The sinking liquid collection and storage tank is located at the bottom of the horizontal main channel and is directly below the sinking liquid collection bevel.

[0007] An airflow distributor is located at the position where the oblique branch pipe merges into the horizontal main channel, and the airflow distributor is located on the downstream side of the airflow direction after merging.

[0008] The draining mechanism is fixedly installed at the bottom of the submersible liquid collection and storage tank in the manifold, and the inner cavity of the draining mechanism is connected to the internal space of the submersible liquid collection and storage tank.

[0009] Two ventilator tubing interfaces are respectively fitted to both ends of the manifold connector;

[0010] The atomizer tubing interface is installed at the end of the oblique branch pipe away from the manifold connector.

[0011] Furthermore, the drainage mechanism includes a drainage pipe, a valve seat groove, a spring check valve, an operating rod, an external connector, and a venting component. The drainage pipe is fixedly installed at the bottom end of the submerged liquid collection and storage tank. The valve seat groove is opened on the upper side of the inner wall of the drainage pipe. The spring check valve is fixedly installed inside the valve seat groove. The operating rod is located inside the spring check valve. The external connector is located on the lower side of the outer wall of the drainage pipe. The venting component is detachably connected to the drainage pipe through the external connector.

[0012] Furthermore, the draining component includes a drain sleeve, an inner connecting groove, an annular sealing valve seat, a connecting frame, and a silicone one-way valve plate. The inner connecting groove is formed on the upper side of the inner wall of the drain sleeve. The annular sealing valve seat is fixedly installed on the lower side of the inner wall of the drain sleeve. The connecting frame is fixedly installed on the lower side of the inner wall of the drain sleeve. The silicone one-way valve plate is fixedly installed on the top of the connecting frame, and the upper surface of the silicone one-way valve plate is in contact with the lower surface of the annular sealing valve seat.

[0013] Furthermore, the airflow distribution component includes a distribution plate, an acceleration center hole, multiple diversion holes, and three support blocks. The acceleration center hole is located in the center of the distribution plate, the multiple diversion holes are located on the outer periphery of the distribution plate, and the three support blocks are fixedly installed on the outer periphery of the distribution plate, with the outer wall of the support blocks fixedly connected to the inner wall of the horizontal main channel.

[0014] Furthermore, the oblique branch is configured as a Venturi tube structure, including an inlet section, a constriction section, a throat, and an expansion section connected in sequence. The inner diameter of the throat is smaller than the inner diameters of the inlet section and the expansion section. The outlet end of the expansion section is connected to the inner cavity of the horizontal main channel, and the inner diameter of the outlet end of the expansion section is smaller than the inner diameter of the horizontal main channel.

[0015] Furthermore, the oblique branch pipe is connected to the inner cavity of the horizontal main channel at a 45° angle with its central axis, and the inner wall where the oblique branch pipe and the horizontal main channel meet is rounded.

[0016] Furthermore, the upstream side of the sinking liquid collection slope is a sloping surface, and the downstream side is a vertical surface. The inner wall where the sinking liquid collection slope intersects with the horizontal main channel is rounded. The sinking liquid collection and storage tank and the inclined branch pipe are both integrally formed with the horizontal main channel.

[0017] Furthermore, both the inner connecting groove and the outer connecting part are configured with threaded structures, the cross-section of the annular sealing valve seat is configured as a trapezoidal structure with left and right symmetry, the silicone one-way valve plate is configured as an umbrella-shaped plate structure, the drain pipe is integrally formed with the sinking liquid collection and storage tank, and the end of the operating lever is fixedly connected to the valve core of the spring one-way valve.

[0018] Furthermore, the acceleration center hole is configured as a tapered conical hole, the diversion hole is configured as a radial micro-hole, and the support block and the distribution plate are integrally formed.

[0019] Furthermore, the ventilator tubing interface and the nebulizer tubing interface respectively adopt a locking Luer connector or a quick-connect sealing connector. Both the locking Luer connector and the quick-connect sealing connector are composed of a female connector and a male connector that cooperate with each other. The female connector is fixed at the end of the manifold connector, and the male connector is fixed at the end of the corresponding ventilator tubing or nebulizer tubing.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] (1) The present invention guides the condensate on the horizontal main channel wall to the sinking liquid collection tank through the sinking liquid collection bevel in the manifold guide connector, and then discharges it through the drainage mechanism. This solves the problem of dead corner liquid accumulation in the corner of the existing connector. The sinking liquid collection bevel collects the condensate on the pipe wall to the sinking liquid collection tank directly below, and the drainage mechanism discharges the accumulated liquid, so that the accumulated liquid cannot flow back into the ventilator main unit pipeline. The structure eliminates the backflow hazard caused by the positive pressure impact of ventilation and ensures the safe operation of the equipment.

[0022] (2) In this invention, the oblique branch pipe is set as a Venturi tube structure. The atomized drug mist is accelerated through the inlet section and the contraction section and then passes through the throat at high speed. After being decelerated and pressurized through the expansion section, it smoothly merges into the horizontal main channel. There are no sharp corner impacts throughout the process, which greatly reduces the amount of condensate generated by the drug mist impacting the pipe wall. At the same time, the high-speed airflow at the throat of the Venturi tube forms a local negative pressure at the outlet of the expansion section, which has a suction effect on the small amount of accumulated liquid that merges into the sinking liquid collection bevel. The accumulated liquid is torn and broken into fine droplets, which are carried away by the main airflow in the form of aerosol, thus realizing the atomization and discharge of the accumulated liquid.

[0023] (3) In this invention, the spring one-way valve of the drainage mechanism and the silicone one-way valve of the ventilator form a two-stage series check structure. Under normal conditions, the double seal blocks the positive pressure inside the ventilator tubing, ensuring that the accumulated fluid cannot flow back. When drainage is required, unscrew the drainage sleeve and pull down the operating lever to actively open the spring one-way valve to open the flow channel. The accumulated fluid is discharged outward through the drainage pipe. After releasing the lever, the spring one-way valve automatically resets and seals. Screw the drainage sleeve back on to restore normal use. The entire drainage process does not require interruption of ventilator ventilation. The operation is simple and reliable, and it is suitable for the continuous treatment needs of critically ill patients. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0025] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0026] Figure 2 This is an overall structural cross-sectional view provided for an embodiment of the present invention;

[0027] Figure 3 A cross-sectional view of the manifold guide connector is provided for embodiments of the present invention;

[0028] Figure 4 A schematic diagram of the airflow distribution component is provided for an embodiment of the present invention;

[0029] Figure 5 A structural cross-sectional view of the drainage mechanism is provided for embodiments of the present invention;

[0030] Figure 6 A cross-sectional view of the drain pipe is provided for embodiments of the present invention;

[0031] Figure 7 A structural cross-sectional view of the venting component is provided for an embodiment of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Manifold connector; 2. Airflow distribution component; 3. Drainage mechanism; 4. Ventilator tubing interface; 5. Nebulizer tubing interface; 6. Horizontal main channel; 7. Angled branch pipe; 8. Sinking collection bevel; 9. Sinking collection reservoir; 21. Distribution plate; 22. Acceleration center hole; 23. Diversion hole; 24. Support block; 31. Drainage pipe; 32. Valve seat groove; 33. Spring check valve; 34. Operating lever; 35. External connector; 36. Drainage component; 361. Drainage sleeve; 362. Internal connecting groove; 363. Annular sealing valve seat; 364. Connecting frame; 365. Silicone check valve plate. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] As attached Figure 1 To be continued Figure 7 As shown:

[0036] Example 1:

[0037] The present invention provides a combined tubing system integrating a ventilator and a nebulizer, including a manifold connector 1;

[0038] The manifold guide joint 1 includes a horizontal main channel 6, an inclined branch pipe 7, a sinking liquid collection bevel 8, and a sinking liquid collection and storage tank 9. The inclined branch pipe 7 is located at the top middle of the horizontal main channel 6. The sinking liquid collection bevel 8 is located at the bottom of the horizontal main channel 6 and close to the gas outlet side. The sinking liquid collection and storage tank 9 is located at the bottom of the horizontal main channel 6 and is located directly below the sinking liquid collection bevel 8.

[0039] Airflow distributor 2 is located at the position where the inclined branch pipe 7 merges into the horizontal main channel 6, and the airflow distributor 2 is located on the downstream side of the airflow direction after merging;

[0040] The draining mechanism 3 is fixedly installed at the bottom of the submerged liquid collection and storage tank 9 in the manifold 1, and the inner cavity of the draining mechanism 3 is connected to the internal space of the submerged liquid collection and storage tank 9.

[0041] Two ventilator tubing interfaces 4 are respectively installed at both ends of the manifold connector 1;

[0042] The atomizer tubing interface 5 is assembled at the end of the inclined branch pipe 7 away from the manifold connector 1;

[0043] The drainage mechanism 3 includes a drainage pipe 31, a valve seat groove 32, a spring check valve 33, an operating rod 34, an external connector 35, and a draining component 36. The drainage pipe 31 is fixedly installed at the bottom of the submerged liquid collection and storage tank 9. The valve seat groove 32 is opened on the upper side of the inner wall of the drainage pipe 31. The spring check valve 33 is fixedly installed inside the valve seat groove 32. The operating rod 34 is located inside the spring check valve 33. The external connector 35 is located on the lower side of the outer wall of the drainage pipe 31. The draining component 36 is detachably connected to the drainage pipe 31 through the external connector 35.

[0044] The draining component 36 includes a drain sleeve 361, an inner connecting groove 362, an annular sealing valve seat 363, a connecting frame 364, and a silicone one-way valve plate 365. The inner connecting groove 362 is opened on the upper side of the inner wall of the drain sleeve 361. The annular sealing valve seat 363 is fixedly installed on the lower side of the inner wall of the drain sleeve 361. The connecting frame 364 is fixedly installed on the lower side of the inner wall of the drain sleeve 361. The silicone one-way valve plate 365 is fixedly installed on the top of the connecting frame 364, and the upper surface of the silicone one-way valve plate 365 is in contact with the lower surface of the annular sealing valve seat 363.

[0045] Both the inner connecting groove 362 and the outer connecting piece 35 are threaded structures. The two are connected by threads to achieve a quick and detachable connection between the drain piece 36 and the drain pipe 31. The threaded connection also has a self-locking sealing function to prevent high-pressure airflow from leaking through the connection gap. The cross-section of the annular sealing valve seat 363 is a symmetrical trapezoidal structure with both its top and bottom faces being bevels. The top bevel is used to guide the incoming liquid to the inner cavity of the drain sleeve 361, and the bottom bevel contacts and engages with the upper surface of the silicone one-way valve plate 365 to form a bevel seal. The silicone one-way valve plate 365 is an umbrella-shaped structure, and its outer annular edge elastically presses against the bottom bevel of the annular sealing valve seat 363 under normal conditions, forming a normally closed seal. This seal is further strengthened when subjected to liquid pressure. When the drain pipe 31 is deformed outward, it opens the drain channel. The drain pipe 31 and the sinking liquid collection and storage tank 9 are integrally formed. The integral forming eliminates the assembly gap between the drain pipe 31 and the sinking liquid collection and storage tank 9, avoiding leakage or accumulation of liquid at the connection interface. At the same time, it improves the overall structural strength and prevents the drain pipe 31 from loosening due to vibration or misoperation. The end of the operating rod 34 is fixedly connected to the valve core of the spring check valve 33. The operating rod 34 passes through the inside of the spring along the axial direction of the spring check valve 33 and extends to the lower part of the drain pipe 31. The end of the operating rod 34 is rigidly connected to the valve core by thread or snap-fit, so that the operator's pulling action is directly transmitted to the valve core, realizing the forced opening of the spring check valve 33.

[0046] The ventilator tubing interface 4 and the nebulizer tubing interface 5 respectively adopt a locking Luer connector or a quick-connect sealing connector. The locking Luer connector achieves axial compression sealing by rotating the locking nut, while the quick-connect sealing connector achieves instant self-sealing through a push-in insertion and an internal sealing ring. The two connector types can be flexibly selected according to clinical usage habits and application scenarios. Both the locking Luer connector and the quick-connect sealing connector consist of a mating female connector and a male connector. The female connector has a tapered receiving port or insertion hole at its end, and the male connector has a corresponding tapered plug or insertion post at its end. After insertion, axial locking is achieved through a threaded locking ring or elastic buckle, ensuring the connection is secure during breathing. The machine will not loosen or leak during the switching between positive and negative pressure ventilation. The female connector is fixed to the end of the manifold connector 1. The female connector and the manifold connector 1 are connected in a non-removable manner by secondary injection molding or ultrasonic welding, making the female connector a permanent component of one end of the manifold connector 1. It does not require on-site assembly and will not loosen due to repeated plugging and unplugging. The male connector is fixed to the end of the corresponding ventilator hose or nebulizer hose. The male connector is fixed to the end of the hose by compression sleeve or adhesive. The male connector has a flow channel inside that matches the inner diameter of the hose, ensuring a smooth transition of airflow or drug mist when it enters the male connector from the hose, without generating additional flow resistance or turbulence.

[0047] Working principle: Before use, the manifold connector 1 is connected in series to the ventilator tubing through two ventilator tubing interfaces 4, and the nebulizer is connected through the nebulizer tubing interface 5. After the ventilator is started, the continuous positive pressure airflow flows along the horizontal main channel 6. The drug mist generated by the nebulizer flows into the horizontal main channel 6 through the oblique branch 7, mixes with the ventilator airflow, and is delivered to the patient. During treatment, the drug mist condenses into tiny droplets on the wall of the horizontal main channel 6. Driven by the airflow, the droplets move downstream along the wall. When they reach the sinking collection slope 8, the slope near the upstream guides the condensate to slide down. The droplets fall naturally into the sinking collection reservoir 9 under the action of gravity. The vertical surface near the downstream prevents the accumulated liquid from flowing back up the downstream wall when the expiratory phase changes or the air pressure fluctuates. The accumulated liquid that falls into the sinking collection reservoir 9 enters the drainage pipe 31 through the inner cavity of the drainage mechanism 3. Under normal conditions, the spring one-way valve 33 is closed. The accumulated liquid is trapped in the submerged liquid collection and storage tank 9. When drainage is required, first unscrew the drainage sleeve 361 from the drainage pipe 31. The silicone one-way valve plate 365 inside the drainage sleeve 361 is removed along with the drainage sleeve 361. At this time, the spring one-way valve 33 automatically closes and isolates the pipeline under the pressure inside the pipeline. Then, pull down the operating rod 34. The end of the operating rod 34 drives the valve core of the spring one-way valve 33 to move downward. The spring one-way valve 33 opens, and the accumulated liquid in the submerged liquid collection and storage tank 9 is discharged outward through the drainage pipe 31 under the action of gravity. After releasing the operating rod 34, the valve core of the spring one-way valve 33 resets and closes under the action of spring force. Screw the drainage sleeve 361 back onto the drainage pipe 31. The silicone one-way valve plate 365 inside the drainage sleeve 361 is reinstalled along with the drainage sleeve 361. The umbrella edge re-fits the annular sealing valve seat 363 to achieve a circumferential seal and restore the two-stage series check protection.

[0048] Example 2:

[0049] This embodiment is basically the same as the previous embodiment, except that the oblique branch pipe 7 is set as a Venturi tube structure, including an inlet section, a contraction section, a throat, and an expansion section connected in sequence. The inner diameter of the inlet section is the same as the inner diameter of the atomizer pipe interface 5. The inner diameter of the contraction section smoothly and gradually decreases from the inner diameter of the inlet section to the inner diameter of the throat. The inner diameter of the expansion section smoothly and gradually increases from the inner diameter of the throat to the inner diameter of the outlet end of the expansion section. The four sections are connected end to end to form a complete variable cross-section flow channel. The inner diameter of the throat is smaller than the inner diameters of the inlet section and the expansion section. The throat is the part with the smallest inner diameter in the entire oblique branch pipe 7. When the drug mist flows through the throat, the flow velocity reaches the maximum value and the static pressure drops to the minimum value. A local negative pressure suction zone is formed at the inlet of the expansion section downstream of the throat. This negative pressure zone has a suction effect on the trace amount of accumulated liquid that flows into the sinking liquid collection bevel 8. The outlet end of the expansion section is connected to the inner cavity of the horizontal main channel 6. The outlet end of the expansion section extends into the inner cavity of the horizontal main channel 6, so that the outlet end of the Venturi tube structure is located in the central area of ​​the cross-section of the horizontal main channel 6. This facilitates the mixing of the drug mist with the mainstream airflow of the ventilator in the central area of ​​the horizontal main channel 6, preventing the drug mist from adhering too much to the tube wall. The inner diameter of the outlet end of the expansion section is smaller than the inner diameter of the horizontal main channel 6. An annular step surface is formed between the outlet end of the expansion section and the inner wall of the horizontal main channel 6. This annular step surface forms a radial expansion structure between the inner wall of the horizontal main channel 6 and the outlet of the Venturi tube. When the drug mist enters the horizontal main channel 6 from the outlet end of the expansion section, the flow cross section suddenly expands, the drug mist velocity further decreases, and the static pressure further increases, so that it enters the horizontal main channel 6 in a stable state. At the same time, the annular step surface acts as a physical barrier, which can prevent the condensate on the inner wall of the horizontal main channel 6 from flowing back into the Venturi tube along the tube wall.

[0050] The oblique branch 7 connects to the inner cavity of the horizontal main channel 6 at a 45° angle with its central axis. The 45° angle is an obtuse angle entry method. When the drug mist flows along the axial direction of the oblique branch 7 to the outlet end, the flow direction only needs to be deflected by 45° to be consistent with the airflow direction of the ventilator in the horizontal main channel 6. The deflection angle is small and the flow resistance is low, which avoids the large amount of wall condensation generated by the drug mist particles hitting the opposite tube wall due to inertia when entering at a 90° vertical angle. In addition, the inner wall of the intersection of the oblique branch 7 and the horizontal main channel 6 is treated with a rounded transition. This rounded surface replaces the sharp edges with a smooth arc-shaped guide surface at the intersection. The drug mist and airflow flow smoothly along the rounded surface when turning, without generating flow separation and backflow dead zone. Droplets cannot stay and accumulate at the intersection corner.

[0051] The upstream side of the sinking collection slope 8 is a sloping surface, and the downstream side is a vertical surface. The slope angle is 30° to 60°. Within this angle range, the slope surface can ensure that the condensate slides smoothly under the action of gravity, without occupying too much space in the inner cavity of the horizontal main channel 6 due to excessively steep slope. The vertical surface forms a vertical barrier to prevent the accumulated liquid from flowing back to the horizontal main channel 6 when the air pressure fluctuates. The inner wall of the junction between the sinking collection slope 8 and the horizontal main channel 6 is rounded to eliminate the edges and steps between the sloping surface and the inner wall of the horizontal main channel 6, so that the condensate at the bottom of the horizontal main channel 6 can slide smoothly into the sinking collection slope 8 without lingering or splashing at the junction. The sinking collection and storage tank 9 and the inclined branch pipe 7 are integrally formed with the horizontal main channel 6. The three are injection molded into an inseparable whole component through a single mold, eliminating assembly gaps and weak sealing links.

[0052] Working principle: The inclined branch pipe 7 has a Venturi tube structure. The drug mist generated by the atomizer enters the inlet section of the inclined branch pipe 7 through the atomizer pipe interface 5. After being accelerated by the contraction section, it passes through the throat at high speed, reaching the maximum flow velocity at the throat. After being decelerated and pressurized by the expansion section, it smoothly merges into the inner cavity of the horizontal main channel 6. Since the inner diameter of the outlet end of the expansion section is smaller than the inner diameter of the horizontal main channel 6, a local negative pressure suction zone is formed when the drug mist enters the horizontal main channel 6. The inclined branch pipe 7 forms a 45° angle with the horizontal main channel 6. The drug mist smoothly merges into the mainstream airflow along the inclined direction, avoiding the vertical impact on the pipe wall and generating a large amount of condensate. The rounded transition treatment of the inner wall of the intersection further eliminates the dead zone of airflow and the corner where droplets are stuck. The condensate generated by the pipe wall of the horizontal main channel 6 moves downstream along the pipe wall to the sinking collection slope 8. The slope near the upstream guides the condensate to slide down into the sinking collection and storage tank 9. The vertical surface near the downstream prevents the backflow of accumulated liquid.

[0053] Example 3:

[0054] This embodiment is basically the same as the previous embodiment, except that the airflow distribution component 2 includes a distribution plate 21, an acceleration center hole 22, multiple diversion holes 23 and three support blocks 24. The acceleration center hole 22 is opened in the center of the distribution plate 21, the multiple diversion holes 23 are all opened on the outer periphery of the distribution plate 21, and the three support blocks 24 are all fixedly installed on the outer periphery of the distribution plate 21, and the outer wall of the support block 24 is fixedly connected to the inner wall of the horizontal main channel 6.

[0055] The acceleration center orifice 22 is configured as a tapered conical orifice, with the taper direction aligned with the flow direction of the drug mist. This means the orifice diameter at the inlet is larger than the outlet diameter. As the drug mist flows through the tapered conical orifice, the flow cross-section gradually narrows and the flow velocity gradually increases, allowing the drug mist particles to gain higher axial kinetic energy and be injected into the horizontal main channel 6 at a higher speed. This reduces the diffusion angle of the drug mist at the outlet of the acceleration center orifice 22. The diversion orifice 23 is configured as a radial micro-orifice, with its extension direction perpendicular to the axis of the acceleration center orifice 22. Each radial micro-orifice surrounds the acceleration center orifice 22. The outlet end of the 2 is evenly distributed on the outer periphery. The ventilator airflow in the horizontal main channel 6 enters from the outer periphery of the distribution plate 21 towards the center through radial micro-holes, forming an annular air curtain on the outer periphery of the outlet end of the acceleration center hole 22. This annular air curtain wraps the accelerated drug mist in the axial region of the horizontal main channel 6. The support block 24 is integrally formed with the distribution plate 21. The three support blocks 24 are evenly distributed at 120° angles along the outer periphery of the distribution plate 21 to ensure that the axial position and circumferential angle of the airflow distribution component 2 in the horizontal main channel 6 are locked.

[0056] Working principle: When the drug mist generated by the nebulizer flows into the horizontal main channel 6 through the inclined branch pipe 7, it first passes through the airflow distribution component 2. The drug mist then enters the acceleration center hole 22 in the center of the distribution plate 21. The acceleration center hole 22 is a tapered cone hole, and the flow velocity of the drug mist gradually increases as it passes through, entering the horizontal main channel 6 at a higher speed. At the same time, multiple diversion holes 23 on the outer periphery of the distribution plate 21 are radial micropores. A portion of the ventilator airflow in the horizontal main channel 6 passes through the diversion holes 23 and through the distribution plate 21, forming an annular air curtain on the outer periphery of the outlet of the acceleration center hole 22. This annular air curtain wraps the accelerated drug mist in the central area of ​​the horizontal main channel 6, preventing drug mist particles from impacting the pipe wall of the horizontal main channel 6 and forming a wall liquid film. Through the synergistic effect of the above structures, the amount of condensate generated on the pipe wall is reduced from the source, and the amount of liquid entering the sinking liquid collection and storage tank 9 is reduced.

[0057] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A combined tubing system integrating a ventilator and a nebulizer, characterized in that, include: Combination connector (1); The flow guide joint (1) includes a horizontal main channel (6), an inclined branch pipe (7), a sinking liquid collection slope (8), and a sinking liquid collection storage tank (9). The inclined branch pipe (7) is located at the top middle of the horizontal main channel (6). The sinking liquid collection slope (8) is located at the bottom of the horizontal main channel (6) and close to the gas outlet side. The sinking liquid collection storage tank (9) is located at the bottom of the horizontal main channel (6) and is located directly below the sinking liquid collection slope (8). An airflow distribution component (2) is provided at the position where the inclined branch pipe (7) merges into the horizontal main channel (6), and the airflow distribution component (2) is located on the downstream side of the airflow direction after merging; The draining mechanism (3) is fixedly installed at the bottom end of the submerged liquid collection and storage tank (9) in the manifold guide connector (1), and the inner cavity of the draining mechanism (3) is connected to the internal space of the submerged liquid collection and storage tank (9). Two ventilator tubing interfaces (4) are respectively assembled at both ends of the manifold connector (1); The atomizer pipe interface (5) is installed at the end of the oblique branch pipe (7) away from the manifold connector (1).

2. The combined tubing system integrating a ventilator and a nebulizer according to claim 1, characterized in that, The drainage mechanism (3) includes a drainage pipe (31), a valve seat groove (32), a spring check valve (33), an operating rod (34), an external connector (35), and a draining component (36). The drainage pipe (31) is fixedly installed at the bottom of the submerged liquid collection and storage tank (9). The valve seat groove (32) is opened on the upper side of the inner wall of the drainage pipe (31). The spring check valve (33) is fixedly installed inside the valve seat groove (32). The operating rod (34) is located inside the spring check valve (33). The external connector (35) is located on the lower side of the outer wall of the drainage pipe (31). The draining component (36) is detachably connected to the drainage pipe (31) through the external connector (35).

3. The combined tubing system integrating a ventilator and a nebulizer according to claim 2, characterized in that, The draining component (36) includes a drain sleeve (361), an inner connecting groove (362), an annular sealing valve seat (363), a connecting frame (364), and a silicone one-way valve plate (365). The inner connecting groove (362) is opened on the upper side of the inner wall of the drain sleeve (361). The annular sealing valve seat (363) is fixedly installed on the lower side of the inner wall of the drain sleeve (361). The connecting frame (364) is fixedly installed on the lower side of the inner wall of the drain sleeve (361). The silicone one-way valve plate (365) is fixedly installed on the top of the connecting frame (364), and the upper surface of the silicone one-way valve plate (365) is in contact with the lower surface of the annular sealing valve seat (363).

4. The combined tubing system integrating a ventilator and a nebulizer according to claim 1, characterized in that, The airflow distribution component (2) includes a distribution plate (21), an acceleration center hole (22), multiple diversion holes (23) and three support blocks (24). The acceleration center hole (22) is located in the center of the distribution plate (21), and the multiple diversion holes (23) are located on the outer periphery of the distribution plate (21). The three support blocks (24) are fixedly installed on the outer periphery of the distribution plate (21), and the outer wall of the support block (24) is fixedly connected to the inner wall of the horizontal main channel (6).

5. The combined tubing system integrating a ventilator and a nebulizer according to claim 1, characterized in that, The oblique branch (7) is configured as a Venturi tube structure, including an inlet section, a constriction section, a throat and an expansion section connected in sequence. The inner diameter of the throat is smaller than the inner diameter of the inlet section and the expansion section. The outlet end of the expansion section is connected to the inner cavity of the horizontal main channel (6), and the inner diameter of the outlet end of the expansion section is smaller than the inner diameter of the horizontal main channel (6).

6. The combined tubing system integrating a ventilator and a nebulizer according to claim 1, characterized in that, The oblique branch pipe (7) is connected to the inner cavity of the horizontal main channel (6) at a 45° angle with the central axis of the horizontal main channel (6), and the inner wall where the oblique branch pipe (7) and the horizontal main channel (6) meet is treated with a rounded transition.

7. The combined tubing system integrating a ventilator and a nebulizer according to claim 1, characterized in that, The sinking liquid collection slope (8) has a sloping surface on the upstream side and a vertical surface on the downstream side. The inner wall of the intersection of the sinking liquid collection slope (8) and the horizontal main channel (6) is made with a rounded transition. The sinking liquid collection storage tank (9) and the inclined branch pipe (7) are both integrally formed with the horizontal main channel (6).

8. The combined tubing system integrating a ventilator and a nebulizer according to claim 3, characterized in that, The inner connecting groove (362) and the outer connecting piece (35) are both set as threaded structures. The cross section of the annular sealing valve seat (363) is set as a trapezoidal structure with left and right symmetry. The silicone one-way valve plate (365) is set as an umbrella-shaped plate structure. The drain pipe (31) is integrally formed with the sinking liquid collection and storage tank (9). The end of the operating lever (34) is fixedly connected to the valve core of the spring one-way valve (33).

9. A combined tubing system integrating a ventilator and a nebulizer according to claim 4, characterized in that, The acceleration center hole (22) is configured as a tapered conical hole, the diversion hole (23) is configured as a radial micro-hole, and the support block (24) and the distribution plate (21) are integrally formed.

10. The combined tubing system integrating a ventilator and a nebulizer according to claim 1, characterized in that, The ventilator tubing interface (4) and the nebulizer tubing interface (5) are respectively equipped with locking Luer connectors or quick-connect sealing connectors. Both locking Luer connectors and quick-connect sealing connectors are composed of mating female connectors and male connectors. The female connector is fixed at the end of the manifold connector (1), and the male connector is fixed at the end of the corresponding ventilator tubing or nebulizer tubing.

Images