A breathing machine pipeline device

Abstract

The utility model discloses a ventilator pipeline device, which is installed on the exhaled gas pipeline of the ventilator, and includes an exhaled filter device, wherein the exhaled filter device includes an air inlet, an exhaust port, a filter box, and a filter assembly placed in the filter box, wherein the air inlet and the exhaust port are arranged on the filter box, and the filter assembly is placed between the air inlet and the exhaust port; an air guide is connected to the inner end of the air inlet, and the air guide is connected and conducted with the filter assembly, and the filter area of ​​the filter assembly is larger than the cross-sectional area of ​​the air inlet. The ventilator pipeline device of the utility model is installed on the exhaled gas pipeline of the ventilator, and the filter assembly is used inside the ventilator pipeline device to intercept water vapor in the exhaled high-temperature and high-humidity gas, and by appropriately cooling the exhaled gas, the problem that the detection sensor directly detects the high-temperature and high-humidity gas, which affects the detection capability, detection performance and service life of the detection sensor is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilator medical equipment, in particular to a ventilator pipeline device. Background Art

[0002] A ventilator, also known as an artificial respirator or respiratory assistance device, is a medical device used to assist or replace the patient's natural breathing, mostly used to assist patients who cannot breathe spontaneously. The function of a ventilator is to maintain the patient's respiratory function by providing gas flow to ensure the patient's oxygen supply and carbon dioxide discharge.

[0003] The working principle of the ventilator is based on controlling the patient's airway pressure and providing gas mechanically to simulate the natural breathing process. It mainly includes the following steps:

[0004] Ventilation phase (inspiration phase): The ventilator provides gas (usually a mixture of gases containing oxygen) to the patient's lungs through a device such as an endotracheal tube, mask or nasal cannula. During this process, the patient's lungs expand and inhale oxygen.

[0005] Exhaust phase (expiratory phase): The ventilator depressurizes or stops providing gas to the patient, allowing the patient's lungs to expel carbon dioxide. At this point, gas flows from the patient's lungs back into the ventilator and out.

[0006] In the process of using a ventilator to assist the patient's breathing, it is necessary to adjust and monitor the gas delivered by the ventilator (the gas inhaled by the patient) and the gas exhaled by the patient to obtain the patient's breathing pattern and physiological parameters, such as oxygen saturation, airway pressure, respiratory rate, etc., to ensure the safety and effectiveness of the patient's treatment, improve the level of patient care, provide personalized treatment for different patients, reduce the patient's complications, etc. During the monitoring process, both the gas inhaled by the patient and the gas exhaled by the patient need to be tested, and the gas exhaled by the patient is a high-temperature and high-humidity gas. Long-term contact with the detection sensor will affect the detection sensor, or even damage the detection sensor, affecting the normal operation of the ventilator, and even causing a medical accident.

[0007] Therefore, in summary, there is an urgent need to obtain a device or method to solve the problem that when the sensor in the ventilator detects the high-temperature and high-humidity gas exhaled by the patient, it will not be damaged or affect the normal detection work and service life of the sensor, and at the same time, it is also necessary to ensure the stability and accuracy of the detection results. Utility Model Content

[0008] In order to overcome at least one of the defects described in the above-mentioned prior art, the utility model provides a ventilator pipeline device, which is installed on the exhaled gas pipeline of the ventilator. The water vapor in the exhaled high-temperature and high-humidity gas is intercepted by a filter component inside the ventilator pipeline device, and the exhaled gas is appropriately cooled to solve the problem that the detection sensor directly detects the high-temperature and high-humidity gas, affecting the detection capability, detection performance and service life of the detection sensor.

[0009] The technical solution adopted by the utility model to solve the problem is:

[0010] A ventilator pipeline device is installed on the exhaled gas pipeline of the ventilator, comprising an exhaled air filter device, the exhaled air filter device comprising an air inlet, an exhaust port, a filter box and a filter component placed in the filter box, the air inlet and the exhaust port are arranged on the filter box, and the filter component is placed between the air inlet and the exhaust port;

[0011] An air guide is connected to the inner end of the air inlet, and the air guide is connected and communicated with the filter assembly. The filter area of ​​the filter assembly is larger than the cross-sectional area of ​​the air inlet.

[0012] Preferably, the air guide member includes an air guide pipe and a diffuser, the air guide pipe is connected to the air inlet, the diffuser is fixed to the end of the air guide pipe away from the air inlet, and the diffuser is connected and communicated with the filter assembly away from the end of the air guide pipe.

[0013] Preferably, the cross-sectional area of ​​the air duct is not less than the cross-sectional area of ​​the air inlet, the diffuser is trumpet-shaped, and is a trumpet tube. The large-diameter end of the trumpet tube is sealed and connected to the filter assembly, and an air distribution plate is provided in the trumpet tube.

[0014] Preferably, the filter assembly comprises a filter core and a support frame for mounting the filter core, and the support frame is detachably connected to the air guide;

[0015] The support frame comprises a first mesh plate and a second mesh plate which are arranged opposite to each other, the first mesh plate and the second mesh plate are arranged towards the air inlet and the air outlet respectively, the filter core is placed between the first mesh plate and the second mesh plate, a connecting tube is arranged between the first mesh plate and the second mesh plate, and the connecting tube is detachably connected to the air guide;

[0016] The first grid plate and the second grid plate are made of glass fiber material.

[0017] Preferably, the filter core is made of hollow fiber, and along the axial direction of the hollow fiber, the air inlet and the air outlet are respectively located at two ends of the hollow fiber; the effective filtration area on the hollow fiber is larger than the cross-sectional area of ​​the air inlet.

[0018] Preferably, the filter core comprises a filter screen, the filter screen is made of metal material, and the filter screen is wavy; and the filter screen is stacked in several layers from the air inlet to the exhaust port.

[0019] Preferably, the filter box includes a shell, a water collecting tank is provided on the shell, and the inner wall of the water collecting tank is recessed toward the outside of the shell; along the radial and axial directions of the shell, the inner wall of the water collecting tank exceeds the position of the outer wall of the shell, and the water vapor intercepted by the filter component enters the water collecting tank; a plurality of drain outlets are provided on the water collecting tank, and a removable sealing valve is provided on the drain outlet.

[0020] Preferably, two water collecting tanks are provided and are respectively located at two ends of the filter assembly. At least two drainage outlets are provided on one of the water collecting tanks, and the drainage outlets are evenly distributed in the length direction of the water collecting tank.

[0021] Preferably, the shell is cylindrical, the air inlet and the exhaust port are respectively arranged at both ends of the cylindrical shell, the water collecting groove is an annular groove, the annular groove is arranged at both ends of the shell, and along the radial and axial directions of the cylindrical shell, the inner diameter of the annular groove is larger than the outer diameter of the cylindrical shell.

[0022] Preferably, the shell includes a first shell and a second shell that are sealed and detachably connected, the air inlet and the air outlet are respectively arranged on the first shell and the second shell; the two water collecting tanks are respectively arranged on the first shell and the second shell.

[0023] In summary, the ventilator pipeline device provided by the utility model has the following technical effects:

[0024] 1. An exhalation filter device is provided on the ventilator pipeline device, and a filter component is provided inside the exhalation filter device. The filter component intercepts water vapor in the exhaled high-temperature and high-humidity gas, separates or basically separates the water vapor and the gas, and also appropriately cools the exhaled gas, so that the detection sensor is no longer in direct contact with the high-temperature and high-humidity gas during detection, thereby ensuring the detection capability and detection performance of the detection sensor and extending its service life.

[0025] 2. Inside the exhaled air filter device, the filtration area of ​​the filter component is larger than the cross-sectional area of ​​the air inlet, thereby ensuring an effective filtration area, avoiding air blockage caused by the filter component, ensuring that the gas parameters detected by the detection sensor are the true parameters of the exhaled gas, and ensuring the accuracy of the detection.

[0026] 3. Inside the exhaled air filter device, the filter core is made of hollow fiber or metal filter mesh, which can separate the water vapor in the exhaled air and properly cool the gas without reducing the gas flow and flow rate, thus ensuring the accuracy of the detection.

[0027] 4. The water collection tank is set up to collect the water vapor intercepted by the filter component, and then it can be discharged and treated centrally. On the one hand, it is convenient for water vapor collection, and on the other hand, it avoids secondary pollution of medical waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The utility model is a schematic diagram of an embodiment of a ventilator pipeline device.

[0029] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0030] Figure 3 for Figure 1 Enlarged view of point B in the middle.

[0031] Figure 4 This is a schematic diagram of another embodiment of a ventilator pipeline device of the utility model.

[0032] Figure 5 The present invention is a usage status diagram of a ventilator circuit device.

[0033] The meanings of the reference numerals are as follows:

[0034] 1. Filter box; 11. First shell; 12. Second shell; 13. Limiting ring; 14. Sealing ring; 2. Air inlet; 21. Air guide; 211. Air guide pipe; 212. Diffuser; 213. Connecting part; 214. Air distribution plate; 3. Exhaust port; 4. Filter assembly; 41. Filter core; 411. Hollow fiber; 412. Filter screen; 42. Support frame; 421. First mesh plate; 422. Connecting tube; 423. Second mesh plate; 5. Water collecting tank; 50. Water vapor; 51. Drain; 10. Exhaled gas pipeline. DETAILED DESCRIPTION

[0035] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0038] See also Figure 1 and Figure 2 The utility model discloses a ventilator pipeline device, which is installed on the exhaled gas pipeline 10 of the ventilator, and includes an exhaled gas filtering device to filter the gas exhaled by the patient. The filtering here refers to intercepting the water vapor in the gas exhaled by the patient, and synchronously cooling the exhaled gas appropriately to avoid the exhaled high-temperature and high-humidity gas being directly used for detection, and to avoid the high-temperature and high-humidity gas from damaging the detection sensor.

[0039] A ventilator pipeline device includes an exhalation filter device, which includes an air inlet 2, an exhaust port 3, a filter box 1, and a filter assembly 4 placed in the filter box 1. The air inlet 2 and the exhaust port 3 are arranged on the filter box 1, and the filter assembly 4 is placed between the air inlet 2 and the exhaust port 3. The exhaled high-temperature and high-humidity gas enters the filter box from the air inlet, and then is filtered to reduce the water vapor in the gas, the gas temperature is appropriately reduced, and then the gas is discharged from the exhaust port, and finally detected at the detection position.

[0040] An air guide 21 is connected to the inner end of the air inlet 2, and the air guide 21 is connected and communicated with the filter assembly 4. The arrangement of the air guide allows the high-temperature and high-humidity gas entering the air inlet to directly enter or most of it to directly enter the filter assembly 4, thereby achieving filtration, increasing the gas filtration amount, ensuring the removal of water vapor in the gas, ensuring the reduction of the gas temperature, and preventing the high-temperature and high-humidity gas from directly contacting the sensor for detection.

[0041] The filtering area of ​​the filter component 4 is larger than the cross-sectional area of ​​the air inlet 2, which ensures an effective filtering area, increases the filtering area on the filter component, ensures that the gas entering through the air inlet can quickly pass through the filter component, avoids air blockage problems caused by the filter component, ensures that the gas parameters detected by the detection sensor are the true parameters of the exhaled gas, and ensures the accuracy of the detection.

[0042] In this solution, a filter component is arranged inside the ventilator pipeline device, which intercepts water vapor in the exhaled high-temperature and high-humidity gas, separates or basically separates the water vapor and the gas, and also appropriately cools the exhaled gas, so that the detection sensor is no longer in direct contact with the high-temperature and high-humidity gas during detection, thereby ensuring the detection capability and performance of the detection sensor and extending its service life.

[0043] In this solution, the air guide 21 includes an air guide tube 211 and a diffuser 212. The air guide tube 211 is connected to the air inlet 2, and the diffuser 212 is fixed to the end of the air guide tube 211 away from the air inlet 2. The diffuser 212 is connected and communicated with the filter assembly 4 at the end away from the air guide tube 211. By providing the diffuser, the gas transported by the air guide tube is dispersed, so that it is quickly and as evenly as possible dispersed and enters the filter assembly 4, ensuring that the gas passes through the filter assembly quickly and reducing air resistance.

[0044] In this solution, the cross-sectional area of ​​the air guide tube is not less than the cross-sectional area of ​​the air inlet 2, and the diffuser 212 is in the shape of a trumpet, which is a trumpet tube. The large diameter end of the trumpet tube is sealed and connected to the filter assembly, and an air distribution plate 214 is arranged inside the trumpet tube. The air distribution plate 214 includes a plurality of conical tubes arranged in a sleeve, the large diameter end of the conical tube faces the filter assembly, and the small diameter end faces the air guide tube. The gas entering through the air inlet and transported through the air guide tube enters between each air distribution tube respectively, and is guided by the air distribution tube to guide the high-temperature and high-humidity gas to the entire filter surface of the filter assembly as much as possible, ensuring that the high-temperature and high-humidity gas passes through the filter assembly quickly, avoiding the filter assembly from causing air blockage to the gas, and ensuring that the data detected by the sensor on the gas passing through the filter assembly is the real data during the patient's breathing process.

[0045] Furthermore, the gas distribution pipe is made of metal materials, such as stainless steel, copper, etc., which can effectively cool the high-temperature and high-humidity gas passing through it. On the one hand, it can reduce the temperature of the high-temperature and high-humidity gas, and on the other hand, it can condense water vapor in the high-temperature and high-humidity gas and reduce the amount of water vapor in the high-temperature and high-humidity gas.

[0046] In this solution, the filter assembly 4 includes a filter core 41 and a support frame 42 for mounting the filter core 41 .

[0047] The support frame 42 is detachably connected to the air guide 21. The support frame 42 includes a first mesh plate 412 and a second mesh plate 423 that are arranged opposite to each other, and the first mesh plate 412 and the second mesh plate 423 are arranged toward the air inlet 2 and the exhaust port 3, respectively. The filter core 41 is placed between the first mesh plate 412 and the second mesh plate 423, and a connecting tube 422 is arranged between the first mesh plate 412 and the second mesh plate 423, and the connecting tube 422 is detachably connected to the air guide 21. The diffuser 212 on the air guide is provided with a connecting portion 213 toward the filter assembly end, and the connecting tube 422 is threadedly connected to the connecting portion 213.

[0048] The support frame 42 is used to install the filter core 41, so that the filter assembly is in an integral shape, and the filter core is fixedly installed, which reduces the use state requirements of the ventilator pipeline device and enables the ventilator pipeline device to be used in an upright, inverted or inclined state.

[0049] In this solution, the first mesh plate 412 and the second mesh plate 423 are made of glass fiber material, which is light in weight and has good strength, and reduces the resistance to gas passage.

[0050] In this solution, in one embodiment, Figure 1 As shown, the filter core 41 is made of hollow fibers 411. The hollow fibers intercept water vapor in the gas while ensuring the passage of gas.

[0051] Along the axial direction of the hollow fiber 411, the air inlet 2 and the air outlet 3 are respectively located at the two ends of the hollow fiber 411. When the gas passes through the hollow fiber 411, part of the gas passes through the hollow fiber 411, and part of the gas passes through the hollow part of the hollow fiber 411, which ensures the interception of water vapor in the high-temperature and high-humidity gas, and also ensures the passing speed of the gas and reduces the resistance of the gas passing. When the high-temperature and high-humidity gas is discharged from the patient's body, it is through the passive collapse of the chest and lungs or exhalation caused by negative pressure, so the high-temperature and high-humidity gas has a certain pressure when it is discharged, which can help the high-temperature and high-humidity gas pass through the filter core.

[0052] The effective filtering area on the hollow fiber 411 is larger than the cross-sectional area of ​​the air inlet 2, ensuring the rapid passage of high-temperature and high-humidity gas.

[0053] In this solution, in another embodiment, Figure 4 As shown, the filter core 41 is composed of a filter mesh 412, which is made of metal material. The filter mesh is made of metal and used as a filter core, so that after the high-temperature and high-humidity gas passes through the metal filter mesh, it is reduced by the filter mesh, and the water vapor in the high-temperature and high-humidity gas is condensed, and the water vapor is blocked and retained on the filter mesh, thereby achieving the cooling and dehumidification effects on the high-temperature and high-humidity gas.

[0054] In this solution, the filter screen 412 is wavy, increasing the effective filtering area of ​​the filter screen, so that the effective filtering area of ​​the filter screen is larger than the cross-sectional area of ​​the filter box, which can reduce the volume of the filter box. While reducing the volume of the filter box, it ensures that the high-temperature and high-humidity gas quickly passes through the filter screen to reduce air resistance. From the air inlet to the exhaust port, the filter screen 412 is stacked in several layers to ensure that the filter screen has a cooling and dehumidifying effect on the high-temperature and high-humidity gas.

[0055] In this solution, the filter box 1 includes a shell, and a water collection tank 5 is provided on the shell, and the inner wall of the water collection tank 5 is recessed toward the outside of the shell. In the radial and axial directions of the shell, the inner wall of the water collection tank 5 exceeds the outer wall of the shell, and the water vapor intercepted by the filter component 4 enters the water collection tank 5. The inner wall of the water collection tank 5 exceeds the outer wall of the shell, so that the water vapor intercepted by the filter component can be collected, and then it can be discharged and processed in a centralized manner, which is convenient for water vapor collection on the one hand, and avoids secondary pollution of medical waste on the other hand.

[0056] The water collection tank 5 is provided with a plurality of drain outlets 51, and a plugging valve is detachably provided on the drain outlet 51. When the plugging valve is opened, the water vapor collected in the water collection tank can be quickly discharged. The operation is simple, and the water vapor in the water collection tank can be discharged when the filter box is in use.

[0057] In this solution, two water collecting tanks 5 are provided and are respectively located at both ends of the filter assembly 4, so that no matter what use state and direction the filter box 1 is in, water vapor can enter the water collecting tank, which is convenient for water vapor collection and reduces the use state requirements of the ventilator pipeline device, so that the ventilator pipeline device can be used in an upright, inverted or inclined state.

[0058] At least two drainage ports 51 are provided on a water collecting tank 5. The drainage ports 51 are evenly distributed in the length direction of the water collecting tank 5 to facilitate the water vapor discharge operation, so that the filter box can discharge water vapor in any state.

[0059] In this solution, in order to simplify the shell structure and the water collecting tank structure, the shell is cylindrical, the air inlet 2 and the exhaust port 3 are respectively arranged at both ends of the cylindrical shell, and the water collecting tank 5 is an annular groove, which is arranged at both ends of the shell, and the inner diameter of the annular groove is larger than the outer diameter of the cylindrical shell along the radial and axial directions of the cylindrical shell. Figure 5 As shown, in any use state or at any angle of the ventilator circuit device, the components intercepted by the filter component can enter the sump and be collected.

[0060] In this solution, the shell includes a first shell 11 and a second shell 12 that are sealed and detachably connected, and the air inlet 2 and the air outlet 3 are respectively arranged on the first shell 11 and the second shell 12. By opening the first shell and the second shell, the filter assembly in the shell can be replaced, and the operation is convenient and quick. The two water collection tanks 5 are respectively arranged on the first shell 11 and the second shell 12. The first shell and the second shell are connected by threads, and a limiting ring 13 is arranged in the first shell. The inner end of the second shell is fixed with a sealing ring 14. When the sealing ring is against the limiting ring, the first shell and the second shell are sealed. Connection, avoid overflow of the patient's exhaled gas, and achieve gas isolation, especially in the care of infectious patients, can maximize protection and isolation.

[0061] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A ventilator circuit device, characterized in that: Installed on the exhaled gas pipeline of the ventilator, comprising an exhaled filter device, the exhaled filter device comprising an air inlet, an exhaust port, a filter box and a filter component placed in the filter box, the air inlet and the exhaust port are arranged on the filter box, and the filter component is placed between the air inlet and the exhaust port; An air guide is connected to the inner end of the air inlet, and the air guide is connected and communicated with the filter assembly. The filter area of ​​the filter assembly is larger than the cross-sectional area of ​​the air inlet.

2. The ventilator circuit device according to claim 1, characterized in that: The air guide member includes an air guide pipe and a diffuser, the air guide pipe is connected to the air inlet, the diffuser is fixed to the end of the air guide pipe away from the air inlet, and the diffuser is connected to and communicated with the filter assembly away from the end of the air guide pipe.

3. The ventilator circuit device according to claim 2, characterized in that: The cross-sectional area of ​​the air duct is not less than the cross-sectional area of ​​the air inlet. The diffuser is trumpet-shaped, i.e., a trumpet tube. The large-diameter end of the trumpet tube is sealed and connected to the filter assembly. An air distribution plate is arranged inside the trumpet tube.

4. The ventilator circuit device according to claim 1, 2 or 3, characterized in that: The filter assembly comprises a filter core and a support frame for mounting the filter core, and the support frame is detachably connected to the air guide; The support frame comprises a first mesh plate and a second mesh plate which are arranged opposite to each other, the first mesh plate and the second mesh plate are arranged towards the air inlet and the air outlet respectively, the filter core is placed between the first mesh plate and the second mesh plate, a connecting tube is arranged between the first mesh plate and the second mesh plate, and the connecting tube is detachably connected to the air guide; The first grid plate and the second grid plate are made of glass fiber material.

5. The ventilator circuit device according to claim 4, characterized in that: The filter core is made of hollow fiber, and along the axial direction of the hollow fiber, the air inlet and the air outlet are respectively located at two ends of the hollow fiber; the effective filtering area on the hollow fiber is larger than the cross-sectional area of ​​the air inlet.

6. The ventilator circuit device according to claim 4, characterized in that: The filter core body comprises a filter screen, which is made of metal material and is wavy in shape; from the air inlet to the air outlet, the filter screen is stacked in several layers.

7. The ventilator circuit device according to claim 1, characterized in that: The filter box includes a shell, and a water collecting tank is arranged on the shell, and the inner wall of the water collecting tank is recessed toward the outside of the shell; along the radial and axial directions of the shell, the inner wall of the water collecting tank exceeds the position of the outer wall of the shell, and the water vapor intercepted by the filter component enters the water collecting tank; a plurality of drain outlets are arranged on the water collecting tank, and a removable sealing valve is arranged on the drain outlet.

8. The ventilator circuit device according to claim 7, characterized in that: There are two water collecting tanks, which are respectively located at two ends of the filter assembly. At least two drainage ports are arranged on one of the water collecting tanks, and the drainage ports are evenly distributed in the length direction of the water collecting tank.

9. The ventilator circuit device according to claim 8, characterized in that: The shell is cylindrical, the air inlet and the air outlet are respectively arranged at the two ends of the cylindrical shell, the water collecting groove is an annular groove, the annular groove is arranged at the two ends of the shell, and along the radial and axial directions of the cylindrical shell, the inner diameter of the annular groove is larger than the outer diameter of the cylindrical shell.

10. The ventilator circuit device according to claim 8, characterized in that: The shell comprises a first shell and a second shell that are sealed and detachably connected, the air inlet and the air outlet are respectively arranged on the first shell and the second shell; the two water collecting tanks are respectively arranged on the first shell and the second shell.

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