Portable monitoring and ventilation supporting breathing machine special for cardiology catheter room and CCU

Abstract

The invention relates to the technical field of portable breathing machines, and discloses a portable monitoring and ventilation supporting breathing machine special for a cardiology department catheter room and a CCU, the portable monitoring and ventilation supporting breathing machine comprises a monitoring base, a breathing mask and a main machine which are arranged outside the monitoring base, and a heating humidifier installed on the outer wall of the main machine, and a four-way pipeline is installed in the monitoring base; four ports of the four-way pipeline are respectively communicated with a breathing connecting pipe, an air supply pipeline, an expiration pipeline and a leeward pipeline; a pure mechanical pressure relief valve composed of a gravity ball, an inclined sliding groove and a wind resisting film is arranged in a bypass pipeline, when the main exhalation valve is blocked and the loop pressure abnormally rises to a preset threshold value, the mechanical mechanism is automatically triggered immediately, the wind resisting film is separated, and a bypass pressure relief opening is opened. Response does not depend on electric and electronic sensors, rapid and automatic pressure release at the moment of a fault is achieved, the risk that a patient suffers from barotrauma due to alarm delay is fundamentally avoided, and time is bought for main valve fault processing.

Description

Technical Field

[0001] This invention relates to the field of portable ventilator technology, and more particularly to portable monitoring and ventilation support ventilators specifically designed for cardiology catheterization labs and CCUs. Background Technology

[0002] In the clinical environment of cardiology catheterization labs and CCUs, traditional large fixed ventilators face biomedical engineering challenges such as delayed response, spatial conflicts, and electromagnetic interference between devices when dealing with cardiac emergencies like acute heart failure and respiratory depression after sedation. Crucially, from a biomedical perspective, insufficient airway humidification or increased secretions can easily lead to bio-adhesion of the expiratory valve membrane, causing mechanical obstruction. Existing systems rely excessively on electronic sensor alarms and lack a purely mechanical pressure relief design that can be triggered immediately in the event of power failure or sensor malfunction, exposing patients to biomedical risks such as alveolar damage and pneumothorax caused by a sudden increase in circuit pressure. Furthermore, the inability to quickly replace faulty valves interrupts ventilation support, directly impacting oxygenation and organ perfusion at the biomedical level. Therefore, there is an urgent need to develop integrated portable ventilators with real-time monitoring, biomedical safety redundancy, and rapid emergency response capabilities to improve the timeliness and safety of cardiac emergency resuscitation.

[0003] Patent CN121130238A discloses a spiral portable ventilator, including a body with a hollow internal structure. The body also includes a supply mechanism for forming a turbine-driven air supply structure, a ventilation mechanism for forming a spiral airway structure, and a mask mechanism for forming a buffered mask structure. The supply mechanism is located inside the body, the ventilation mechanism is positioned to one side of the supply mechanism, and the mask mechanism is mounted on the upper part of the body corresponding to the ventilation mechanism. The advantages of this patent are its compact structure, the supply mechanism (which rapidly generates the required pressure and flow rate for the ventilator through a turbine-driven structure), the ventilation mechanism (which uses a spiral airway structure and utilizes the Venturi principle to accelerate the gas, improving gas filtration efficiency and the ventilator's air supply effect), and the mask mechanism (which has a buffer component to cushion the high-speed gas discharged from the ventilation mechanism, achieving a gentler air supply effect and improving the user's breathing comfort).

[0004] The existing technology has the following drawbacks:

[0005] Unable to passively release pressure in case of expiratory valve failure: The expiratory valve diaphragm of existing expiratory machines often fails to open properly due to condensation, respiratory secretions sticking together, or mechanical blockage. Traditional electronic pressure sensor alarms have a delay, causing a sharp rise in the patient's airway pressure and difficulty in exhalation, triggering a high-pressure alarm and possibly accompanied by a drop in blood oxygen. This not only directly causes the risk of barotrauma and interrupts effective ventilation, but also forces medical staff to manually disconnect the breathing circuit in an emergency, thereby increasing the operational risks and the possibility of infection.

[0006] The inability to promptly replace malfunctioning expiratory valves: Existing expiratory valves on expiratory machines often employ an integrated or threaded fastening design, requiring specialized tools for disassembly. They lack quick-release, redundant backup interfaces, and the replacement process for faulty valves is complex and cannot be performed at the bedside. This forces patients to interrupt respiratory support, causing secondary hypoxia and delaying crucial rescue time. Furthermore, it increases the operational burden and error risk for medical staff in emergency situations. Summary of the Invention

[0007] Given the limitations of existing technologies, such as the inability to passively depressurize when the expiratory valve malfunctions and the inability to replace malfunctioning expiratory valves in a timely manner, a portable monitoring and ventilation support ventilator specifically designed for cardiology catheterization labs and CCUs is proposed.

[0008] This application provides a portable monitoring and ventilation support ventilator specifically for the cardiology catheterization lab and CCU. Its purpose is to: achieve immediate and automatic pressure release in the event of expiratory valve blockage by setting up a modular expiratory assembly that can be quickly disassembled and assembled, combined with a purely mechanical bypass pressure relief valve independent of the main circuit, thus ensuring patient safety; at the same time, the snap-on design enables tool-less replacement of the faulty valve within seconds, avoiding ventilation interruption and greatly improving rescue efficiency and operational safety.

[0009] The technical solution of the present invention is: a portable monitoring and ventilation support ventilator for cardiology catheterization lab and CCU, including a monitoring base, a breathing mask and a main unit set outside the monitoring base, and a heated humidifier installed on the outer wall of the main unit. The monitoring base is equipped with a four-way pipe, and the four ports of the four-way pipe are respectively connected to a breathing connection pipe, a supply pipe, an exhalation pipe and a leeward pipe. The end of the leeward pipe away from the four-way pipe is connected to a bypass pipe.

[0010] The inner wall of the bypass pipe is fixedly connected with a semi-enclosed slide frame and a fully enclosed slide frame. The semi-enclosed slide frame is located above the fully enclosed slide frame. A wind-blocking membrane is slidably connected between the semi-enclosed slide frame and the fully enclosed slide frame. When the wind-blocking membrane slides to the end of the semi-enclosed slide frame, it detaches from the semi-enclosed slide frame.

[0011] By adopting the above solution, a bypass pipeline is set up to achieve rapid response to faults without relying on any power, electronic sensors, or control programs. This fundamentally avoids the risk of excessive pressure on the patient's lungs (barotrauma) due to delayed or malfunctioning electronic alarms. Furthermore, while the pressure relief valve automatically releases pressure, the main air supply connection between the patient and the ventilator is not cut off. This provides medical staff with buffer time to diagnose and handle main expiratory valve malfunctions, maintains the continuity of basic ventilation, and prevents the patient from suffering secondary hypoxia due to complete lack of ventilation support.

[0012] Furthermore, the inner wall of the bypass pipe is provided with two symmetrically arranged inclined sliding grooves, and the ends of the two inclined sliding grooves away from the leeward pipe are provided with release slots. The outer wall of the wind-blocking membrane is connected with two symmetrically arranged elastic connecting strips. The ends of the two elastic connecting strips away from the wind-blocking membrane are respectively slidably connected to the inner wall of the corresponding inclined sliding groove. The inner wall of the inclined sliding groove is rolledly connected with a gravity ball, which is located at the end of the inclined sliding groove away from the release slot.

[0013] By adopting the above scheme, the design of the gravity ball mass, the angle of the inclined slide, and the elastic connecting strip can accurately set and calibrate the pressure relief trigger pressure, ensuring the accuracy of the safety response. The use of rolling friction drive effectively overcomes the jamming problem that may occur in a pure sliding structure, ensuring that the pressure relief action will be executed when the threshold is reached. The non-self-resetting design forms a mechanical fuse indicator, which clearly indicates that the safety protection function has been used, forcing manual intervention and system checks, thereby improving the overall safety management level.

[0014] Furthermore, the exhalation conduit is internally provided with a membrane assembly and a valve assembly, the valve assembly being used to control the closure of the membrane assembly.

[0015] Furthermore, the membrane assembly includes a membrane frame and multiple peach-shaped membranes. The outer wall of the membrane frame is fixedly connected to the inner wall of the exhalation conduit, and a free-rotating shaft is installed between the inner wall of the membrane frame and the multiple peach-shaped membranes.

[0016] Furthermore, the valve assembly includes a miniature solenoid valve fixedly connected to the inner wall of the exhalation tubing, with a telescopic rod sleeved at the output end of the miniature solenoid valve, and a frustum-shaped block fixedly connected to the end of the telescopic rod away from the miniature solenoid valve.

[0017] Furthermore, the inner wall of the exhalation conduit is provided with a cross groove, and the outer wall of the truncated block is fixedly connected with a cross slide rod. The end of the cross slide rod slides on the inner wall of the cross groove, and the cross slide rod abuts against the peach-shaped film.

[0018] Using the above scheme, a dual-control expiratory valve combining active and passive control is formed through the membrane assembly and valve assembly. During inhalation, the ventilator's main control unit sends an inhalation signal, and the miniature solenoid valve drives the telescopic rod to extend, causing the cross slide bar to move forward along the groove. This forcefully presses and flattens all the peach-shaped membranes from the back, ensuring they are tightly attached to the membrane frame. This mechanical force achieves an absolute seal at the expiratory end, ensuring that all the inhalation pressure generated by the ventilator is used to expand the patient's lungs, delivering tidal volume accurately and without any waste of gas at the expiratory end. At the end of inhalation, the main control unit switches to the expiratory signal, the miniature solenoid valve is de-energized and reset, driving the telescopic rod to retract, causing the cross slide bar to move backward, completely releasing the mechanical compression of the peach-shaped membranes. The unconstrained peach-shaped membranes, propelled by the patient's exhaled airflow, immediately and gently open around their free-rotating axis, providing a wide, low-resistance outflow channel for exhaled gas.

[0019] Furthermore, a sealing assembly is provided between the four-way pipe and the exhalation pipe. The sealing assembly includes a first guide groove formed on the outer wall of the four-way pipe and a second guide groove formed on the outer wall of the exhalation pipe. An arc-shaped sealing strip is slidably connected between the first guide groove and the second guide groove.

[0020] Furthermore, the inner wall of the four-way pipe is provided with a through groove, the through groove is located at the bottom of the exhalation pipe, the bottom of the four-way pipe is provided with a placement groove, and the inner wall of the placement groove is fitted with an isolation plate.

[0021] Using the above solution, the interface is exposed by sliding the sealing strip. The isolation plate is then removed from the placement slot and inserted into the through slot, serving as an ejector tool to push the faulty pipe upwards for removal. During the interval between disassembly and installation of the new pipe, the inserted isolation plate instantly and physically seals the bottom opening of the four-way pipe, effectively preventing foreign objects from entering the core gas path or gas leakage, ensuring the cleanliness and airtightness of the rest of the patient's gas path during maintenance. After installing the new pipe, the isolation plate can be easily snapped back into the storage slot, and the sealing strip slides back to restore the seal. This design significantly shortens equipment maintenance time and improves clinical operation efficiency and safety.

[0022] Furthermore, two semi-conical baffles are symmetrically arranged on the inner wall of the gas supply pipe, and a torsion spring shaft is installed between the gas supply pipe and the two semi-conical baffles. The two semi-conical baffles are normally closed under the torsion of the corresponding torsion spring shaft.

[0023] Furthermore, a monitoring device is installed on the top of the monitoring base, a flow guide block is connected to the inner wall of the four-way pipe, the four-way pipe is connected to the breathing mask through a breathing connection pipe, and the air supply pipe is connected to the heating humidifier through an air supply connection pipe.

[0024] The above-mentioned design utilizes a semi-conical baffle and a torsion spring shaft to form a one-way valve. This valve opens during gas supply and closes automatically during exhalation due to the torsion spring. This strictly ensures unidirectional gas flow from the main unit to the patient, effectively preventing backflow of exhaled air or ambient air into the gas supply system, protecting the cleanliness of the gas source and maintaining the accuracy of the preset ventilation volume. The guide block within the four-way conduit precisely guides the airflow from the gas supply pipe towards the breathing connection tube leading to the patient, reducing turbulence and energy loss within the tubing and improving ventilation efficiency. Simultaneously, the monitoring device located at the airflow intersection can capture and analyze key physiological and mechanical parameters such as gas velocity, pressure, and carbon dioxide concentration in real time and non-invasively, providing an immediate and reliable data basis for precise adjustment of respiratory support modes and clinical assessment of the patient's condition.

[0025] The beneficial effects of this invention are:

[0026] 1. By installing a purely mechanical pressure relief valve within the bypass pipeline, consisting of a gravity ball, a slanted slide, and a diaphragm, this mechanical mechanism automatically triggers immediately when the main exhalation valve becomes blocked, causing the circuit pressure to abnormally rise to a preset threshold. This causes the diaphragm to detach, opening the bypass pressure relief port. Its response is independent of electrical and electronic sensors, achieving rapid and automatic pressure release in the event of a fault. This fundamentally avoids the risk of barotrauma to patients due to alarm delays and buys valuable time for handling main valve malfunctions.

[0027] 2. A quick-release sealing assembly consisting of an arc-shaped sealing strip, a through groove, and a pluggable isolation plate is used between the expiratory tubing and the four-way tubing. During maintenance, simply slide the sealing strip and insert the isolation plate to push out the faulty tubing; the isolation plate simultaneously and instantly seals the interface to prevent leakage. This design allows the entire replacement process to be completed within tens of seconds without tools, ensuring extremely short ventilation interruption time and greatly improving bedside maintenance efficiency and operational safety.

[0028] 3. By highly integrating a one-way valve for precise air supply, a flow guide block for efficient airflow, real-time monitoring, dual active and passive expiratory control, instantaneous mechanical depressurization, and rapid maintenance functions into a compact base, the various modules work together to enable the device to not only possess advanced monitoring and precise ventilation capabilities but also completely solve the shortcomings of traditional equipment in emergency fault response and ease of maintenance. It is especially suitable for rescue environments with limited space and changing conditions, achieving highly reliable integrated portable respiratory support. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the structure of the monitoring device of the present invention;

[0031] Figure 3This is a schematic diagram of the four-way pipe structure of the present invention;

[0032] Figure 4 This is a schematic diagram of the opening and closing state of the semi-conical baffle of the present invention;

[0033] Figure 5 This is a schematic diagram of the structure of the thin-film assembly of the present invention;

[0034] Figure 6 This is a schematic diagram of the valve assembly structure of the present invention;

[0035] Figure 7 This is a schematic diagram of the peach-shaped film structure of the present invention;

[0036] Figure 8 This is a schematic diagram of the structure of the arc-shaped sealing strip of the present invention;

[0037] Figure 9 This is a schematic diagram of the bypass pipe structure of the present invention;

[0038] Figure 10 This is a schematic diagram of the structure of the wind-blocking membrane of the present invention;

[0039] Figure 11 This is a schematic diagram of the structure at the isolation plate of the present invention;

[0040] Figure 12 This is a schematic diagram of the structure of the mounting groove of the present invention.

[0041] In the picture:

[0042] 1. Monitoring base; 11. Monitoring device; 12. Sealing assembly; 121. Arc-shaped sealing strip; 122. First guide groove; 123. Second guide groove; 13. Four-way pipe; 131. Flow guide block; 132. Backdraft pipe; 14. Through groove; 15. Isolation plate; 16. Placement slot; 2. Breathing mask; 21. Breathing connection tube; 3. Main unit; 31. Heating humidifier; 32. Air supply connection tube; 4. Air supply pipe; 41. Torsion spring shaft; 42. Semi-conical baffle. 5. Exhalation tubing; 51. Membrane assembly; 511. Membrane frame; 512. Peach-shaped membrane; 513. Free-spinning shaft; 52. Valve assembly; 521. Miniature solenoid valve; 522. Telescopic rod; 523. Frustum block; 524. Cross slide bar; 53. Cross slide groove; 6. Bypass tubing; 61. Semi-enclosed slide frame; 62. Fully enclosed slide frame; 63. Inclined slide groove; 64. Exit slot; 65. Wind-resistant membrane; 651. Elastic connecting strip; 652. Gravity ball. Detailed Implementation

[0043] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0044] Reference Figure 1 - Figure 12 It provides a portable monitoring and ventilation support ventilator for the cardiology catheterization lab and CCU, including a monitoring base 1, a breathing mask 2 and a main unit 3 set outside the monitoring base 1, and a heated humidifier 31 installed on the outer wall of the main unit 3. The monitoring base 1 has a four-way pipe 13 installed inside. The four ports of the four-way pipe 13 are respectively connected to the breathing connection tube 21, the air supply pipe 4, the exhalation pipe 5 and the leeward pipe 132. The end of the leeward pipe 132 away from the four-way pipe 13 is connected to a bypass pipe 6.

[0045] Reference Figure 8 - Figure 10 The inner wall of the bypass pipe 6 is fixedly connected with a semi-enclosed slide frame 61 and a fully enclosed slide frame 62. The semi-enclosed slide frame 61 is located above the fully enclosed slide frame 62. A wind-blocking membrane 65 is slidably connected between the semi-enclosed slide frame 61 and the fully enclosed slide frame 62. When the wind-blocking membrane 65 slides to the end of the semi-enclosed slide frame 61, it disengages from the semi-enclosed slide frame 61.

[0046] Specifically, the bypass line 6 constitutes a purely mechanical passive safety relief valve independent of the main ventilation circuit. When the ventilator is working normally, the expiratory airflow is smoothly discharged through the main expiratory line 5, and the pressure within the system is within a safe range. At this time, the choke membrane 65 completely seals the bypass line 6, ensuring that all exhaled air is discharged through the designed positive pressure pathway, without affecting the respiratory mechanics performance under normal operating conditions. When the expiratory valve of the main expiratory line 5 cannot open normally due to condensation, secretion blockage, or mechanical jamming, the pressure within the patient's expiratory circuit will rise sharply. This abnormally high-pressure airflow will be conducted to the inlet of the bypass line 6 through the leeward duct 132. The thrust generated by the high-pressure airflow overcomes the frictional resistance of the choke membrane 65. When the choke membrane 65 is pushed to the end of the semi-enclosed slide frame 61, its edge will disengage from the slide's constraint. Since the semi-enclosed slide frame 61 is designed with an open top outlet, the choke membrane 65 loses its sealing function at this position, and the high-pressure gas can be instantly and rapidly released into the atmosphere through this opening, thereby forcibly reducing the circuit pressure to a safe level.

[0047] By using the bypass conduit 6, a rapid response to malfunctions is achieved without relying on any electrical or electronic sensors or control programs. This fundamentally avoids the risk of barotrauma to the patient's lungs due to delayed or malfunctioning electronic alarms. Furthermore, while the pressure relief valve automatically releases pressure, the main air supply connection between the patient and the ventilator is not severed. This provides medical staff with buffer time to diagnose and address malfunctions of the main expiratory valve, maintaining the continuity of basic ventilation and preventing the patient from suffering secondary hypoxia due to complete lack of ventilation support.

[0048] Reference Figure 8 - Figure 10 The inner wall of the bypass pipe 6 is provided with two symmetrically arranged inclined sliding grooves 63. The ends of the two inclined sliding grooves 63 away from the leeward pipe 132 are provided with exit slots 64. The outer wall of the wind-blocking membrane 65 is connected with two symmetrically arranged elastic connecting strips 651. The ends of the two elastic connecting strips 651 away from the wind-blocking membrane 65 are respectively slidably connected to the inner wall of the corresponding inclined sliding groove 63. The inner wall of the inclined sliding groove 63 is rolledly connected with a gravity ball 652, which is located at the end of the inclined sliding groove 63 away from the exit slot 64.

[0049] Specifically, the wind-resistant membrane 65 is slidably connected to the inclined slide groove 63 through the ends of the elastic connecting strips 651 on both sides, achieving stable and centered sliding and preventing skew and jamming; the gravity ball 652 is located at the top of the high end of the inclined slide groove 63, close to the end of the elastic connecting strip 651, and is in a state of obstructed static equilibrium. Its own gravity gives it a natural tendency to roll down the inclined groove, but it is blocked by the end of the elastic connecting strip 651. The pressure corresponding to this equilibrium point is the preset safe pressure relief threshold.

[0050] The design of the gravity ball 652 mass, the inclined slide 63 angle, and the elastic connecting bar 651 allows for precise setting and calibration of the pressure relief trigger pressure, ensuring the accuracy of the safety response. Utilizing rolling friction drive, it effectively overcomes the jamming problem that may occur in a pure sliding structure, ensuring that the pressure relief action is inevitably executed when the threshold is reached. The non-self-resetting design forms a mechanical fuse indicator, clearly indicating that the safety protection function has been used, forcing manual intervention and system checks, and improving the overall safety management level.

[0051] Reference Figure 5 - Figure 7 The exhalation conduit 5 is internally equipped with a membrane assembly 51 and a valve assembly 52. ​​The valve assembly 52 is used to control the closure of the membrane assembly 51. The membrane assembly 51 includes a membrane frame 511 and multiple peach-shaped membranes 512. The outer wall of the membrane frame 511 is fixedly connected to the inner wall of the exhalation conduit 5. A free-rotating shaft 513 is installed between the inner wall of the membrane frame 511 and the multiple peach-shaped membranes 512. The valve assembly 52 includes a miniature solenoid valve 521 fixedly connected to the inner wall of the exhalation conduit 5. A telescopic rod 522 is sleeved on the output end of the miniature solenoid valve 521. A frustum block 523 is fixedly connected to the end of the telescopic rod 522 away from the miniature solenoid valve 521. A cross groove 53 is opened on the inner wall of the exhalation conduit 5. A cross slide rod 524 is fixedly connected to the outer wall of the frustum block 523. The end of the cross slide rod 524 slides on the inner wall of the cross groove 53 and abuts against the peach-shaped membranes 512.

[0052] Specifically, the shape design of the peach-shaped membrane 512 facilitates unidirectional opening. Each membrane is hinged to the membrane frame 511 via a free-rotating shaft 513, allowing it to open and close easily and with low resistance around the shaft. The miniature solenoid valve 521 is an actuator controlled by electrical signals from the ventilator's main control unit. During the inspiratory phase, it can be energized to drive its output end to move. The frustum block 523 is fixed to the end of the telescopic rod 522, serving as the base and force point of the cross slide bar 524. The cross slide bar 524 extends outward from the frustum block 523, and its end slides within the cross groove 53 to precisely align and press against specific positions of all the peach-shaped membranes 512.

[0053] The membrane assembly 51 and valve assembly 52 form a dual-control expiratory valve that combines active and passive control. During inhalation, the ventilator's main control unit sends an inhalation signal, and the micro-solenoid valve 521 drives the telescopic rod 522 to extend, causing the cross slide bar 524 to move forward along the slide groove. This forcefully presses and flattens all the peach-shaped membranes 512 from the back, making them tightly adhere to the membrane frame 511. This achieves an absolute seal at the expiratory end through mechanical force, ensuring that all the inhalation pressure generated by the ventilator is used to expand the patient's lungs, and that tidal volume delivery is accurate and error-free, with no gas wasted at the expiratory end. After inhalation, the main control unit switches to the expiratory signal, the micro-solenoid valve 521 is de-energized and reset, driving the telescopic rod 522 to retract, causing the cross slide bar 524 to move backward, completely releasing the mechanical compression of the peach-shaped membranes 512. The unconstrained peach-shaped membranes 512, propelled by the patient's exhaled airflow, immediately open lightly around the free-rotating axis 513, providing a wide, low-resistance outflow channel for exhaled gas.

[0054] Reference Figure 3 - Figure 12 A sealing assembly 12 is provided between the four-way pipe 13 and the exhalation pipe 5. The sealing assembly 12 includes a first guide groove 122 opened on the outer wall of the four-way pipe 13 and a second guide groove 123 opened on the outer wall of the exhalation pipe 5. An arc-shaped sealing strip 121 is slidably connected between the first guide groove 122 and the second guide groove 123. A through groove 14 is opened on the inner wall of the four-way pipe 13. The through groove 14 is located at the bottom of the exhalation pipe 5. A placement groove 16 is opened at the bottom of the four-way pipe 13. An isolation plate 15 is snapped into the inner wall of the placement groove 16.

[0055] By exposing the interface through the sliding arc-shaped sealing strip 121, the isolation plate 15 can be removed from the placement slot 16 and inserted into the through slot 14, thus serving as an ejection tool to push the faulty pipeline upwards for removal. During the gap between disassembly and installation of the new pipeline, the inserted isolation plate 15 can instantly physically seal the bottom opening of the four-way pipeline 13, effectively preventing foreign objects from entering the core gas circuit or gas leakage, ensuring the cleanliness and airtightness of the rest of the patient's gas circuit during maintenance. After the new pipeline is installed, the isolation plate 15 can be easily snapped back into the placement slot 16, and the arc-shaped sealing strip 121 slides back to restore the seal. This design greatly shortens equipment maintenance time and improves clinical operation efficiency and safety.

[0056] Reference Figure 1 - Figure 4 The inner wall of the gas supply pipe 4 is symmetrically provided with two semi-conical baffles 42. A torsion spring shaft 41 is installed between the gas supply pipe 4 and the two semi-conical baffles 42. The two semi-conical baffles 42 are normally closed under the torsion of the corresponding torsion spring shaft 41. A monitoring device 11 is installed on the top of the monitoring base 1. A guide block 131 is connected to the inner wall of the four-way pipe 13. The four-way pipe 13 is connected to the breathing mask 2 through a breathing connection pipe 21. The gas supply pipe 4 is connected to the heating humidifier 31 through a gas supply connection pipe 32.

[0057] A one-way valve is formed by the semi-conical baffle 42 and the torsion spring shaft 41. It is opened by the airflow during gas supply and automatically closed by the torsion spring during exhalation. This strictly ensures unidirectional gas flow from the main unit 3 to the patient, effectively preventing backflow of exhaled air or ambient air into the gas supply system, protecting the cleanliness of the gas source and maintaining the accuracy of the preset ventilation volume. The guide block 131 in the four-way pipe 13 precisely guides the airflow from the gas supply pipe 4 to the breathing connection tube 21 leading to the patient, reducing turbulence and energy loss in the pipeline and improving ventilation efficiency. Simultaneously, the monitoring device 11 located at the airflow intersection can capture and analyze key physiological and mechanical parameters such as the flow rate, pressure, and carbon dioxide concentration of the flowing gas in real time and non-invasively, providing an immediate and reliable data basis for precise adjustment of the respiratory support mode and clinical assessment of the patient's condition.

[0058] Working principle of the invention:

[0059] During gas supply, the main unit 3 activates the gas delivery mode. The warm, humidified gas, processed by the heated humidifier 31, enters the gas supply pipeline 4 through the gas supply connection pipe 32. The airflow pressure pushes the two semi-conical baffles 42 connected by the torsion spring shaft 41 inside the gas supply pipeline 4 to overcome the torque and open, forming a one-way valve, allowing the gas to flow smoothly into the four-way pipeline 13. At this time, the cross slide bar 524 presses against the peach-shaped diaphragm 512, and the airflow is guided by the guide block 131 in the four-way pipeline 13, flowing towards the breathing connection pipe 21, and finally delivered to the breathing mask 2 worn by the patient, completing one assisted or controlled ventilation.

[0060] When the patient exhales, the exhaled air flows back from the breathing mask 2 through the breathing connection tube 21 to the four-way tube 13. The miniature solenoid valve 521 drives the telescopic rod 522 to retract, causing the frustum block 523 and the cross slide rod 524 fixed thereon to move along the cross slide groove 53, releasing the pressure on the peach-shaped membrane 512. Under the action of the exhaled airflow, the peach-shaped membrane 512 can easily open around its own free rotation axis 513, allowing the gas to pass smoothly through the exhalation tube 5 to the outside. During this process, the monitoring device 11 continuously analyzes the gas parameters flowing through the four-way tube 13, such as flow rate, pressure, and carbon dioxide concentration.

[0061] When the peach-shaped membrane 512 becomes stuck due to condensation or secretions and cannot be opened normally, or when the miniature solenoid valve 521 malfunctions due to moisture intrusion and the cross slide bar 524 continuously presses the peach-shaped membrane 512 closed, the patient's exhaled air cannot be discharged through the exhalation tube 5, causing the pressure in the four-way tube 13 and connected tubes to rise sharply. At this time, the bypass tube 6 is passively opened.

[0062] Abnormally high-pressure gas rushes into the leeward duct 132 and enters the bypass duct 6. The high-pressure airflow acts directly on the wind-blocking membrane 65, overcoming the static friction between it and the semi-enclosed slide frame 61 and the fully enclosed slide frame 62. The wind-blocking membrane 65 begins to slide backward along the semi-enclosed slide frame 61 and the fully enclosed slide frame 62. During the sliding, the two elastic connecting strips 651 fixed on the wind-blocking membrane 65 slide in the corresponding inclined slide grooves 63.

[0063] In the initial state, the gravity ball 652 located at the top of the inclined slide 63 is blocked by the elastic connecting strip 651 from its natural downward rolling tendency. The two are in a static balance of mutual resistance. This balancing force corresponds to the preset safe pressure relief threshold. When the pipeline pressure exceeds the threshold, the force driving the wind-blocking membrane 65 is sufficient to push the elastic connecting strip 651 to start sliding along the inclined slide. Once the elastic connecting strip 651 undergoes a slight displacement, its obstruction of the gravity ball 652 is immediately released. The released gravity ball 652 then accelerates downward along the inclined slide 63 under its own gravity.

[0064] The rolling gravity ball 652 pushes the elastic connecting strip 651 in front. Utilizing the principle that rolling friction is much less than sliding friction, the resistance to the forward movement of the elastic connecting strip 651 is reduced, thereby driving the entire air-blocking membrane 65 to complete its subsequent sliding stroke at a faster speed. Finally, it completely detaches from the end of the semi-enclosed slide frame 61, and the two elastic connecting strips 651 also disengage from the disengagement slot 64 at the end of the inclined slide 63. The detachment of the air-blocking membrane 65 instantly opens a large pressure relief port in the middle of the bypass pipe 6, allowing high-pressure gas to be rapidly discharged and the system pressure to drop quickly, thus protecting the patient's airway safety. After depressurization, the detached air-blocking membrane 65 cannot return to its original position, indicating that the safety device has been triggered.

[0065] During troubleshooting, first address the blocked exhalation tubing 5. The operator slides the arc-shaped sealing strip 121 along the second guide groove 123 into the first guide groove 122 on the side of the four-way pipe 13, exposing the detachable exhalation tubing 5. Next, remove the isolation plate 15, which is stuck in the placement groove 16, insert it into the through groove 14, and apply upward force. The plate of the isolation plate 15 presses against the bottom of the exhalation tubing 5, pushing the entire faulty exhalation tubing 5 out from above and detaching it from the monitoring base 1, completing the disassembly. At the same time, the isolation plate 15 seals the four-way pipe 13 to prevent foreign objects from entering or gas from leaking before installing a new tubing. Subsequently, the new, functional exhalation tubing 5 is installed back in place from above. Then, the isolation plate 15 is re-clamped back into the placement groove 16 for storage, ready for future use. Finally, the arc-shaped sealing strip 121 is slid back into its original position, sealing the annular gap between the top interface of the four-way pipe 13 and the exhalation tubing 5.

[0066] For the activated pressure relief device, bypass pipe 6 needs to be replaced. Since the leeward pipe 132 and bypass pipe 6 are connected by a snap-fit ​​mechanism, the old module can be directly removed. The new bypass pipe 6 module has a built-in wind-blocking membrane 65 in its initial position, and its elastic connecting strip 651 is correctly positioned at the starting end of the inclined slide 63. Snap the new module onto the leeward pipe 132 to complete the reset of the safety pressure relief device.

[0067] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A portable monitoring and ventilation support ventilator for cardiology catheterization labs and CCUs, comprising a monitoring base (1), a breathing mask (2) disposed outside the monitoring base (1), and a main unit (3), and a heated humidifier (31) mounted on the outer wall of the main unit (3), characterized in that: The monitoring base (1) is equipped with a four-way pipe (13). The four ports of the four-way pipe (13) are respectively connected to a breathing connection pipe (21), an air supply pipe (4), an exhalation pipe (5), and a leeward pipe (132). The leeward pipe (132) is connected to a bypass pipe (6) at the end away from the four-way pipe (13). The inner wall of the bypass pipe (6) is fixedly connected with a semi-enclosed slide frame (61) and a fully enclosed slide frame (62). The semi-enclosed slide frame (61) is located above the fully enclosed slide frame (62). A wind-blocking membrane (65) is slidably connected between the semi-enclosed slide frame (61) and the fully enclosed slide frame (62). When the wind-blocking membrane (65) slides to the end of the semi-enclosed slide frame (61), it disengages from the semi-enclosed slide frame (61).

2. The portable monitoring and ventilation support ventilator for the cardiology catheterization lab and CCU as described in claim 1, characterized in that: The inner wall of the bypass pipe (6) is provided with two symmetrically arranged inclined sliding grooves (63). The ends of the two inclined sliding grooves (63) away from the leeward pipe (132) are provided with exit slots (64). The outer wall of the wind-blocking membrane (65) is connected with two symmetrically arranged elastic connecting strips (651). The ends of the two elastic connecting strips (651) away from the wind-blocking membrane (65) are respectively slidably connected to the inner wall of the corresponding inclined sliding groove (63). The inner wall of the inclined sliding groove (63) is rolledly connected with a gravity ball (652). The gravity ball (652) is located at the end of the inclined sliding groove (63) away from the exit slot (64).

3. The portable monitoring and ventilation support ventilator for cardiology catheterization labs and CCUs as described in claim 1, characterized in that: The exhalation conduit (5) is provided with a membrane assembly (51) and a valve assembly (52) inside, the valve assembly (52) being used to control the closure of the membrane assembly (51).

4. The portable monitoring and ventilation support ventilator for cardiology catheterization labs and CCUs as described in claim 3, characterized in that: The membrane assembly (51) includes a membrane frame (511) and a plurality of peach-shaped membranes (512). The outer wall of the membrane frame (511) is fixedly connected to the inner wall of the exhalation tube (5). A free-rotating shaft (513) is installed between the inner wall of the membrane frame (511) and the plurality of peach-shaped membranes (512).

5. The portable monitoring and ventilation support ventilator for cardiology catheterization labs and CCUs as described in claim 4, characterized in that: The valve assembly (52) includes a miniature solenoid valve (521) fixedly connected to the inner wall of the exhalation pipe (5). The output end of the miniature solenoid valve (521) is fitted with a telescopic rod (522), and a frustum block (523) is fixedly connected to the end of the telescopic rod (522) away from the miniature solenoid valve (521).

6. The portable monitoring and ventilation support ventilator for cardiology catheterization labs and CCUs as described in claim 5, characterized in that: The inner wall of the exhalation tube (5) is provided with a cross groove (53), and the outer wall of the truncated block (523) is fixedly connected with a cross slide rod (524). The end of the cross slide rod (524) slides on the inner wall of the cross groove (53), and the cross slide rod (524) abuts against the peach-shaped film (512).

7. The portable monitoring and ventilation support ventilator for cardiology catheterization labs and CCUs as described in claim 1, characterized in that: A sealing assembly (12) is provided between the four-way pipe (13) and the exhalation pipe (5). The sealing assembly (12) includes a first guide groove (122) opened on the outer wall of the four-way pipe (13) and a second guide groove (123) opened on the outer wall of the exhalation pipe (5). An arc-shaped sealing strip (121) is slidably connected between the first guide groove (122) and the second guide groove (123).

8. The portable monitoring and ventilation support ventilator for cardiology catheterization labs and CCUs as described in claim 1, characterized in that: The inner wall of the four-way pipe (13) is provided with a through groove (14), the through groove (14) is located at the bottom of the exhalation pipe (5), the bottom of the four-way pipe (13) is provided with a placement groove (16), and the inner wall of the placement groove (16) is fitted with an isolation plate (15).

9. The portable monitoring and ventilation support ventilator for cardiology catheterization labs and CCUs as described in claim 1, characterized in that: The inner wall of the gas supply pipe (4) is symmetrically provided with two semi-conical baffles (42). A torsion spring shaft (41) is installed between the gas supply pipe (4) and the two semi-conical baffles (42). The two semi-conical baffles (42) are normally closed under the torsion of the corresponding torsion spring shaft (41).

10. The portable monitoring and ventilation support ventilator for cardiology catheterization labs and CCUs according to claim 1, characterized in that: The monitoring base (1) is equipped with a monitoring device (11) on top. The inner wall of the four-way pipe (13) is connected with a flow guide block (131). The four-way pipe (13) is connected to the breathing mask (2) through a breathing connection pipe (21). The air supply pipe (4) is connected to the heating humidifier (31) through an air supply connection pipe (32).

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