Tracheal cannula pressure visual sustained negative pressure drainage detachable device

Abstract

This invention discloses a detachable device for continuous negative pressure drainage with visible pressure in a tracheostomy cannula, belonging to the field of aspiration pump technology. The device includes an endotracheal cannula with an air bladder. The air bladder of the endotracheal cannula is connected to a first tube body for inflating or deflating it. A second tube body is provided on the endotracheal cannula. One end of the second tube body is located on the side of the air bladder opposite to the insertion end. The other end of the second tube body is connected to a aspiration pump via a multi-port pipe. A control valve is provided on the passage connecting the multi-port pipe and the second tube body. The device of this invention enables air bladder pressure monitoring and solves the problems of drainage interruption and pressure instability caused by using general-purpose negative pressure devices for multiple purposes, while ensuring the operational stability and hygiene of the aspiration equipment.

Description

Technical Field

[0001] This invention relates to the field of suction pump technology, specifically to a detachable device for continuous negative pressure drainage with visible pressure in a gas cutting sleeve. Background Technology

[0002] Tracheostomy is an important life support procedure performed in clinical practice for critically ill patients with respiratory distress, airway obstruction, etc. The stability of the tracheostomy cannula is directly related to the patient's life safety. Currently, commonly used tracheostomy cannulas mainly consist of endotracheal tubes with cuffs and matching inflation tubing. Existing tracheostomy cannulas typically lack inflation saturation indicators for the cuff, making it impossible for healthcare professionals to directly and accurately monitor the cuff pressure. However, clinical practice requires cuff pressure monitoring devices that allow for real-time observation and adjustment of cuff pressure, as it is crucial for airway care. Abnormal cuff pressure can lead to serious complications. For example, low pressure prevents the cuff from effectively sealing the airway, allowing oral secretions and sputum to leak into the lower respiratory tract, increasing the risk of ventilator-associated pneumonia (VAP). Conversely, high pressure causes continuous compression of the airway mucosa, leading to impaired local blood circulation. Prolonged compression can cause mucosal ischemia, necrosis, and ulceration, and in severe cases, even airway perforation. Furthermore, tracheostomy patients continuously produce airway and oral secretions; if not drained promptly, these secretions accumulate above the cuff, further increasing the risk of infection. The current clinical solution uses a universal negative pressure suction device, but each bed is usually equipped with one device, which needs to be used for multiple purposes such as suctioning and drainage. This cannot meet the continuous drainage needs of secretions from the tracheostomy tube. This multi-purpose mode may pose a risk of pressure instability. The wall-mounted suction devices commonly used in hospitals often have unstable suction pressure, especially in sensitive airways. Coughing can easily generate high pressure, which affects the wall-mounted pressure value. Unstable pressure will stimulate the patient to cough continuously, thus interrupting treatment. In addition, the universal device tubing is thick and rigid, with poor compatibility with the tracheostomy tube, and frequent switching of uses will increase the risk of cross-infection.

[0003] Currently, there are some improved technologies to address the problems of endotracheal intubation. For example, the existing patent technology US20240165354A1 uses a switching valve to switch between suctioning and aspiration functions. Another example is the existing patent technology US20210393907A1, which optimizes the suction range by setting multiple suction holes. However, the above devices are relatively large and not ideal for hospital use. Furthermore, there is still room for improvement in adapting to the continuous drainage requirements of tracheostomy tubes. Summary of the Invention

[0004] The purpose of this invention is to provide a detachable device for continuous negative pressure drainage with visible pressure of the tracheostomy cannula, which can realize airbag pressure monitoring and solve the problems of drainage interruption and pressure instability caused by the use of general negative pressure devices for multiple purposes, as well as ensure the operational stability and cleanliness of the aspiration equipment.

[0005] To address the aforementioned technical problems, this invention provides the following technical solution: a detachable device for visual, continuous negative pressure drainage of a tracheostomy cannula, comprising an endotracheal cannula with an air cuff, a first tube connected to the air cuff for inflation or deflation, a second tube on the endotracheal cannula, one end of the second tube located on the side of the air cuff away from the insertion end, and the other end of the second tube connected to a suction pump via a multi-port tube, with a control valve on the passage connecting the multi-port tube and the second tube. This invention, by connecting the first tube to the air cuff of the endotracheal cannula and cooperating with the pressure detection valve, achieves real-time monitoring of the air cuff pressure, avoiding the risk of mucosal necrosis or pneumonia caused by abnormal pressure. Furthermore, the second tube, connected to the multi-port tube and equipped with a control valve and a suction pump, allows for the aspiration of saliva and other fluids for drainage, solving the problem of drainage interruption caused by using general-purpose negative pressure devices for multiple purposes, and ensuring timely drainage of secretions.

[0006] According to one embodiment of the present invention, one end of the first tube is connected to the cuff of the endotracheal tube, and the other end has a connector with a pressure detection valve connected to the connector. By directly connecting the first tube to the cuff of the endotracheal tube and cooperating with the pressure detection valve on the connector, medical staff can quickly read the cuff pressure data and promptly detect abnormalities such as low or high pressure, thus preventing ventilator-associated pneumonia caused by secretion leakage from the source.

[0007] According to one embodiment of the present invention, the first tube of an adjacent connector is covered by a first plate, and a channel is provided through the side of the first plate to allow the first tube to pass through. By covering the first tube of an adjacent connector with a first plate, the first tube is protected, preventing the end of the first tube from bending or being compressed during clinical operation, ensuring the smooth inflation and deflation of the airbag, and reducing the entanglement of the tube with other components. In actual operation, medical staff can directly lift the connector and pressure detection valve by picking up the first plate to check the pressure, avoiding the possibility that the medical staff's hands directly grasp the first tube when checking the pressure, which would affect the accuracy of the pressure value display.

[0008] According to one embodiment of the present invention, the second tube body and the multi-port pipe are connected by a transition tube assembly. The transition tube assembly includes a main tube body made of a light-transmitting material, which is hollow inside and extends through both ends. One end of the main tube body has a first connector communicating with that end, which is connected to the second tube body. The other end of the main tube body is detachably connected to a second connector that is connected to the multi-port pipe. The first connector and the second tube body are connected by an insertion method, with the inner wall of the second tube body inserted into the outer wall portion of the first connector. The outer wall where the first connector and the second tube body are inserted has multiple annular protrusions for forming a multi-stage seal. Firstly, the main tube is made of translucent material and has a hollow, through-hole design, allowing medical staff to observe the characteristics, flow rate, and patency of the drainage fluid in real time, and promptly detect problems such as secretion blockage and abnormal drainage. Secondly, the connection between the first connector and the second tube, along with the matching connection between the second connector and the multi-port tube, forms a stable drainage path. It can also be adjusted according to different tube diameters; for example, smaller diameter tubes are connected to the first connector, and larger diameter tubes are connected to the main tube, resulting in better compatibility. Finally, when the suction pump is not in operation, the main tube can be manually squeezed for manual aspiration, and disassembly and replacement are also convenient, improving the ease of use of the equipment and providing emergency handling capabilities.

[0009] According to one embodiment of the present invention, the second connector is connected to one end of the main body, and a secondary pipe is detachably connected between the second connector and the main body. One end of the secondary pipe is inserted into the inner wall of the second connector, and the other end has an inner ring with an annular groove for insertion into the main body. The second connector is connected to the multi-port pipe by insertion, specifically, the outer wall of the second connector is inserted into the multi-port pipe. Optionally, the outer wall of the second connector has a sealing ring, or is wrapped with sealing tape or waterproof sealing tape, etc. The secondary pipe, which is detachably connected between the second connector and the main body, is used to extend the overall length of the transition pipe assembly and to allow for selection of more suitable pipe diameters. In addition, when the transition pipe assembly is contaminated, blocked, or damaged, it is not necessary to replace the entire assembly; only the secondary pipe, the second connector, or the main body needs to be disassembled for cleaning or replacement. Furthermore, the annular groove structure of the inner ring, in conjunction with the insertion of the main body, can prevent the pipe from falling off due to slight pulling.

[0010] According to one embodiment of the present invention, the suction pump includes a housing, and a rotatable impeller is built into the housing. The impeller includes a first impeller plate and a second impeller plate that are spaced apart and arranged in parallel. An arc-shaped guide vane is arranged between the first impeller plate and the second impeller plate. The guide vane is arranged in a circumferential manner and at least one side of the guide vane has a plate-like reinforcing blade. By employing a structure in which the first and second impeller plates are arranged parallel to each other at intervals, and arc-shaped guide vanes are arranged around them, secretions are guided and fluid channels are formed. At the same time, during high-speed rotation and drainage, the guide vanes are prone to fatigue damage due to fluid impact, resistance of viscous secretions, or uneven stress on the root and edge of the guide vanes. The reinforcing vanes are attached to at least one side of the guide vanes with a sheet-like structure to improve the overall rigidity of the guide vanes to resist fluid pressure and mechanical stress, and to prevent the vanes from bending, twisting or breaking. Specifically, the reinforcing vanes can evenly distribute stress to the entire surface of the guide vanes, reducing local stress load. More importantly, the sheet-like structure of the reinforcing vanes is adapted to the arc-shaped contour of the guide vanes, which can rectify the fluid flowing between the vanes, reduce flow resistance, and thus improve the drainage efficiency of the suction pump, ensuring effective suction of viscous secretions.

[0011] According to one embodiment of the present invention, the first impeller plate has a connecting base in the middle for connection thereto. The connecting base has a through hole and a keyway for insertion. The connecting base is connected to the drive component of the housing. The through hole in the connecting base is used for mounting the drive component, and the keyway for insertion is for circumferential limiting.

[0012] According to one embodiment of the present invention, a through hole is provided in the middle of the second impeller plate and a liquid outlet pipe body communicating with the through hole is provided. When the impeller of the suction pump rotates at high speed, the negative pressure generated by the guide vanes draws the secretions from the second pipe body into the pump body. Under the combined action of centrifugal force and fluid pressure, the secretions enter the liquid outlet pipe body through the through hole in the middle of the second impeller plate, thereby preventing the secretions from being retained or adhered in the cavity between the first impeller plate and the second impeller plate, and enabling the secretions to enter the collection container.

[0013] According to one embodiment of the present invention, the casing on one side of the impeller has a flushing pipe assembly communicating with its interior. The flushing pipe assembly is used to deliver high-temperature steam or disinfectant into the suction pump casing to flush the impeller's guide vanes, reinforcing vanes, and all corners inside the casing, achieving all-round flushing without dead angles, removing residual secretions, bacteria, and biofilm, and avoiding a decrease in drainage efficiency or cross-infection caused by residual pollutants.

[0014] According to one embodiment of the present invention, the outlet end of the suction pump is connected to a collection container via an outlet pipe. Airway secretions are transported through the outlet pipe to the collection container for centralized storage, avoiding environmental contamination caused by leakage or splashing of secretions during drainage. Simultaneously, the collection container allows for quantitative collection of secretions, facilitating medical personnel's observation of the total amount, characteristics, and other indicators of the secretions.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention enables medical staff to monitor the pressure status of the endotracheal intubation cuff in real time through the first tube and pressure detection valve, avoiding pneumonia caused by secretion leakage due to low pressure. Through the light-transmitting design, detachable structure and multi-stage sealing of the transition tube group, the drainage status can be directly observed, reducing the overall replacement cost caused by tube blockage and contamination. Furthermore, the impeller improves the stability of negative pressure output and drainage efficiency, extending the service life of the equipment. Attached Figure Description

[0016] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the detachable device for visible continuous negative pressure drainage of the air-cutting sleeve according to the present invention; Figure 2 This is a schematic diagram showing the connection between the first pipe body, the connector, and the pressure detection valve of the present invention; Figure 3 This is a schematic diagram showing the connection between the suction pump and the collection container of the present invention; Figure 4 This is a schematic diagram of the internal structure of the transition tube assembly of the present invention; Figure 5 This is a schematic diagram of the impeller structure of the present invention; Figure 6 This is a side view of the impeller of the present invention; Figure 7 for Figure 6 AA section view; Figure 8 This is a schematic diagram of the flushing pipe assembly scheme of the present invention; Figure 9 This is a schematic diagram of the internal structure of the flushing pipe assembly of the present invention; Figure 10 This is a schematic diagram of the connection structure between the first guide column and the second guide column of the present invention; Figure 11 This is a side view of the connection scheme between the first guide column and the second guide column of the present invention.

[0018] Explanation of reference numerals in the attached drawings: 10. Endotracheal tube; 20. First tube body; 21. First plate; 22. Connector; 23. Pressure detection valve; 30. Second tube body; 40. Transition tube assembly; 41. Main tube body; 42. First connector; 43. Inner ring; 44. Secondary tube body; 45. Second connector; 50. Multi-port tube; 51. Control valve; 60. Suction pump; 61. Discharge line; 62. First impeller plate; 63. Second... 64. Impeller plate; 65. Guide vane; 66. Liquid outlet pipe body; 67. Connecting base; 68. Reinforcing blade; 79. Flushing pipe assembly; 70. Flushing pipe body; 71. Connecting sleeve; 72. First feed pipe; 73. First guide column; 74. Bend; 74. Guide vane; 75. Vent hole; 76. Second diverter plate; 77. Second guide column; 78. Convex ring; 79. First diverter plate; 80. Liquid collection container. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] The concepts involved in this application will first be described with reference to the accompanying drawings. It should be noted that the following descriptions of various concepts are only for the purpose of making the content of this application easier to understand and do not constitute a limitation on the scope of protection of this application; furthermore, the embodiments and features in the embodiments of this application can be combined with each other unless otherwise specified. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] Example 1: As shown in the attached figure Figures 1-7As shown, the tracheostomy cannula pressure-visible continuous negative pressure drainage detachable device includes an endotracheal cannula 10 with an air bladder. The air bladder of the endotracheal cannula 10 is connected to a first tube 20 for inflation or deflation. A second tube 30 is provided on the endotracheal cannula 10. One end of the second tube 30 is located on the side of the air bladder opposite to the insertion end, and the other end of the second tube 30 is connected to a suction pump 60 via a multi-port tube 50. A control valve 51 is provided on the passage connecting the multi-port tube 50 and the second tube 30. This invention achieves real-time monitoring of the air bladder pressure by connecting the first tube 20 to the air bladder of the endotracheal cannula 10 and cooperating with the pressure detection valve 23, avoiding the risk of mucosal necrosis or pneumonia caused by abnormal pressure. Furthermore, the second tube 30 is connected to the multi-port tube 50 and is equipped with a control valve 51 and a suction pump 60, which can aspirate saliva and other fluids for drainage, solving the problem of drainage interruption caused by the multi-purpose use of general negative pressure devices, and ensuring timely drainage of secretions.

[0022] One end of the first tube 20 is connected to the cuff of the endotracheal tube 10, and the other end has a connector 22. A pressure detection valve 23 is connected to the connector 22. The first tube 20 is directly connected to the cuff of the endotracheal tube 10. With the pressure detection valve 23 on the connector 22, medical staff can quickly read the cuff pressure data and promptly detect abnormalities such as low or high pressure, thus preventing ventilator-associated pneumonia caused by secretion leakage from the source.

[0023] The first tube 20 of the adjacent connector 22 is covered by a first plate 21, and the side of the first plate 21 has a through-hole that allows the first tube 20 to pass through. By covering the first tube 20 of the adjacent connector 22 with the first plate 21, the first tube 20 is protected, preventing the end of the tube 20 from bending or being compressed during clinical operation, ensuring the smooth inflation and deflation of the cuff, and reducing the entanglement of the tube with other components. In actual operation, medical staff can directly lift the connector 22 and the pressure detection valve 23 by picking up the first plate 21 to check the pressure, avoiding the fact that medical staff directly hold the first tube 20 when checking the pressure, which would affect the accuracy of the pressure value display.

[0024] The second tube 30 and the multi-port tube 50 are connected by a transition tube assembly 40. The transition tube assembly 40 includes a main tube 41 made of a light-transmitting material. The main tube 41 is hollow inside and extends through both ends. One end of the main tube 41 has a first connector 42 communicating with it. The first connector 42 is connected to the second tube 30. The other end of the main tube 41 is detachably connected to a second connector 45 connected to the multi-port tube 50. The first connector 42 and the second tube 30 are inserted into each other. The inner wall of the second tube 30 is inserted into the outer wall of the first connector 42. The outer wall where the first connector 42 and the second tube 30 are inserted has multiple annular protrusions to form a multi-stage seal. Firstly, the main tube 41 is made of a translucent material and has a hollow, through-hole design, allowing medical staff to observe the characteristics, flow rate, and patency of the drainage fluid in real time, and promptly detect problems such as secretion blockage and abnormal drainage. Secondly, the connection between the first connector 42 and the second tube 30, along with the matching connection between the second connector 45 and the multi-port tube 50, forms a stable drainage path. It can also be adjusted according to different tube diameters; for example, small-diameter tubes are connected to the first connector 42, and large-diameter tubes are connected to the main tube 41, resulting in better adaptability. Finally, when the suction pump 60 is not in operation, the main tube 41 can be manually squeezed for manual aspiration, and disassembly and replacement are also convenient, improving the ease of use of the equipment and providing emergency handling capabilities.

[0025] The second connector 45 is connected to one end of the main body 41. A secondary tube 44 is detachably connected between the second connector 45 and the main body 41. One end of the secondary tube 44 is inserted into the inner wall of the second connector 45, and the other end has an inner ring 43 with an annular groove for insertion into the main body 41. The second connector 45 is connected to the multi-port pipe 50 by insertion, specifically, the outer wall of the second connector 45 is inserted into the multi-port pipe 50. Optionally, the outer wall of the second connector 45 has a sealing ring, or is wrapped with sealing tape or waterproof sealing tape, etc., for sealing. The secondary pipe body 44, which is detachably connected to the main pipe body 41 via the second connector 45, is used to extend the overall length of the transition pipe assembly 40 and to allow for more compatible pipe diameters. In addition, when the transition pipe assembly 40 becomes contaminated, blocked, or damaged, it does not need to be replaced as a whole. Only the secondary pipe body 44, the second connector 45, or the main pipe body 41 need to be disassembled for cleaning or replacement. Furthermore, the annular groove structure of the inner ring 43 and the insertion fit with the main pipe body 41 can prevent the pipe from falling off due to slight pulling.

[0026] The suction pump 60 includes a housing, and a rotatable impeller is built into the housing. The impeller includes a first impeller plate 62 and a second impeller plate 63 that are spaced apart and arranged in parallel. An arc-shaped guide vane 64 is arranged between the first impeller plate 62 and the second impeller plate 63. The guide vane 64 is arranged in a ring and at least one side of the guide vane 64 has a reinforcing vane 67 with a sheet-like structure. By employing a structure in which the first impeller plate 62 and the second impeller plate 63 are arranged parallel to each other at intervals, and arc-shaped guide vanes 64 are arranged around them, the secretions are guided and a fluid channel is formed. At the same time, during high-speed rotation and drainage, the guide vanes 64 are prone to fatigue damage due to fluid impact, resistance of viscous secretions, or uneven stress on the root and edge of the guide vanes 64. The reinforcing vanes 67 are attached to at least one side of the guide vanes 64 in a sheet-like structure to improve the overall rigidity of the guide vanes 64 to resist fluid pressure and mechanical stress, and to prevent the vanes from bending, twisting or breaking. Specifically, the reinforcing vanes 67 can evenly distribute stress to the entire surface of the guide vanes 64, reducing local stress load. More importantly, the sheet-like structure of the reinforcing vanes 67 is adapted to the arc-shaped contour of the guide vanes 64, which can rectify the fluid flowing between the vanes, reduce flow resistance, and thus improve the drainage efficiency of the suction pump 60, ensuring effective suction of viscous secretions.

[0027] The first impeller plate 62 has a connecting base 66 in the middle for connection. The connecting base 66 has a through hole and a keyway for insertion. The connecting base 66 is connected to the drive component of the housing. The through hole on the connecting base 66 is used for mounting the drive component, and the keyway for insertion is for circumferential limiting.

[0028] The second impeller plate 63 has a through hole in the middle and a liquid outlet pipe 65 communicating with the through hole. When the impeller of the suction pump 60 rotates at high speed, the negative pressure generated by the guide vane 64 draws the secretions from the second pipe 30 into the pump body. Under the combined action of centrifugal force and fluid pressure, the secretions enter the liquid outlet pipe 65 through the through hole in the middle of the second impeller plate 63, preventing the secretions from being retained or adhered in the cavity between the first impeller plate 62 and the second impeller plate 63, and enabling the secretions to enter the collection container 80.

[0029] The impeller has a flushing pipe assembly 70 on one side of the casing, which is connected to the interior of the impeller. The flushing pipe assembly 70 is used to deliver high-temperature steam or disinfectant to the impeller guide vanes 64, reinforcing vanes 67 and all corners inside the casing of the suction pump 60, so as to achieve all-round flushing without dead angles, remove residual secretions, bacteria and biofilm, and avoid the decrease in drainage efficiency or cross-infection caused by residual pollutants.

[0030] The outlet of the suction pump 60 is connected to a collection container 80 via an outlet pipe 61. Airway secretions are transported through the outlet pipe 61 to the collection container 80 for centralized storage, avoiding environmental contamination caused by leakage or splashing of secretions during drainage. At the same time, the collection container 80 can achieve quantitative collection of secretions, making it convenient for medical staff to observe the total amount, characteristics and other indicators of secretions.

[0031] Example 2: In this embodiment, a further solution based on the scheme of Embodiment 1 is provided, see appendix. Figure 1 Appendix Figure 8 -Appendix Figure 11 As shown, the casing on one side of the impeller has a flushing pipe assembly 70 that communicates with its interior.

[0032] The flushing pipe assembly 70 includes a flushing pipe body 71 with a rotating structure. The flushing pipe body 71 has through holes extending to both ends. One end of the flushing pipe body 71 has a connecting sleeve 72 that is adapted to connect with an external pipe body. If necessary, a sealing ring or other sealing means is provided inside the connecting sleeve 72 to prevent leakage during media transmission. The connecting sleeve 72 connects to an external gas conveying device to introduce high-temperature steam into the housing for high-temperature flushing of the impeller and for virus disinfection.

[0033] This invention utilizes a flushing pipe assembly 70 connected to one side of the impeller housing. When cleaning and disinfection are required, high-temperature steam from the outside enters the through hole of the flushing pipe body 71 through the connecting sleeve 72 and is directionally delivered to the inside of the suction pump 60 housing. The high-temperature steam can quickly coat the impeller components such as the guide vanes 64, reinforcing vanes 67, first impeller plate 62, and second impeller plate 63, as well as the inner wall of the housing. On the one hand, the high temperature kills residual bacteria and viruses, and on the other hand, the wettability and impact force of the steam soften and wash away the attached viscous secretions, biofilms, and other pollutants, thereby achieving cleaning of the impeller and the inside of the pump body.

[0034] The flushing pipe 71 is internally equipped with a first guide column 74 and a second guide column 75 coaxial with it. The coaxiality ensures that the disinfection medium is directionally transported along the axis of the flushing pipe 71. There is a gap between the first guide column 74 and the second guide column 75 and the inner wall of the flushing pipe 71. Utilizing the double-layer guide structure formed by the first guide column 74 and the second guide column 75, combined with the gap between the two and the pipe wall, the high-temperature steam or disinfectant is divided into multiple layers of airflow / liquid flow. This allows the medium to evenly cover the surfaces of the impeller components such as the guide blades 64, reinforcing blades 67, first impeller plate 62, and second impeller plate 63. Furthermore, the gap helps to ensure smooth medium flow and ensures that the disinfection medium has sufficient impact force to act on the contaminants.

[0035] The first guide column 74 has a first through hole that penetrates one end of the first guide column 74 adjacent to the second guide column 75, and the inner wall of the first guide column 74 has an internal thread. The outer wall of the second guide column 75 has an external thread that matches the internal thread. The second guide column 75 has a second through hole that penetrates both ends of it, and the second through hole is connected to the first through hole. The flushing pipe body 71 is provided with a first feed pipe 73. One end of the first feed pipe 73 is connected to an external media input device, and the other end is connected to the inside of the first through hole. The discharge end of the second through hole has a first diverter plate 77 that is spaced apart from the bottom of the second guide column 75. The first diverter plate 77 has a raised portion at the center of its surface relative to the second through hole, and the raised portion has an arc-shaped transition surface. The media input device connected to the first feed pipe 73 is a disinfectant input device.

[0036] The first diversion plate 77 at the discharge end of the second through hole maintains a distance from the bottom of the second guide column 75. The arc-shaped transition protrusion structure at the center of its surface can evenly divert the disinfectant flowing through the second through hole to the surrounding area, breaking the disinfection disinfect angle caused by a single flow direction.

[0037] The second guide column 75 has a second diverter plate 744 connected to its bottom outer side. The first diverter plate 77 is connected to the second diverter plate 744 by threaded fasteners, and there is a gap between the second diverter plate 744 and the first diverter plate 77. The gap can be adjusted by the threaded fasteners to control the output path and diffusion range of the disinfectant. The connection part between the second diverter plate 744 and the second guide column 75 has an arc-shaped transition surface to guide the smooth flow of the disinfectant and avoid medium loss or uneven diffusion caused by turbulence due to structural corners, so as to ensure that the disinfectant is output in a stable flow state.

[0038] The first guide column 74 is surrounded by guide vanes 742 arranged at intervals. The end of the first guide column 74 has a bent pipe 741 that communicates with the first through hole inside it. The first feed pipe 73 communicates with the bent pipe 741 and then with the inside of the first through hole. There is a vent hole 743 at the upper end of the bent pipe. The axis of the vent hole 743 is coaxial with the axis of the flushing pipe body 71. Specifically, the axes of the vent hole 743, the flushing pipe body 71 and the first guide column 74 are coaxial.

[0039] The guide vanes 742, arranged at intervals around the outer side of the first guide column 74, guide the medium to flow smoothly along the gap between the inner wall of the flushing pipe 71 and the guide column, avoiding turbulence caused by medium disturbance. The vent 743 provided at the upper end of the bend is coaxial with the axis of the flushing pipe 71 and the first guide column 74, forming a through-ventilation channel. This allows airflow to enter the first and second through holes to form a gas-liquid mixed airflow, improving the subsequent cleaning and disinfection effect inside the shell. Furthermore, the removal efficiency of mucus and other substances adhering to the shell in the gas-liquid mixed state can be improved.

[0040] This design balances the internal and external air pressure of the pump body, preventing excessive internal pressure from affecting delivery efficiency due to the injection of disinfectant media. It also promotes media circulation, allowing residual secretions and bacteria to be fully discharged with the air and liquid flow, thus improving cleaning effectiveness. Through the synergistic effects of flow guidance, buffering, and ventilation, this design optimizes the flow performance of the disinfectant media while ensuring delivery stability and air pressure balance. This allows high-temperature steam or disinfectant to efficiently and evenly cover the impeller and pump body, thoroughly removing contaminants and further enhancing the hygiene, safety, and reliability of the device.

[0041] Example 3: In this embodiment, the solution is based on the solution of embodiment 1. The pressure detection valve 23 is externally connected to an audible and visual alarm or a display screen, which can more intuitively display the pressure or issue an alarm. For example, the display screen can be set to display the airbag pressure detection pressure range with color to warn and remind, such as red for less than 25, green for 25-30 cmH2O, yellow for >30, and black for >40.

[0042] It should also be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," "linked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0043] The embodiments and / or implementation methods described above are merely preferred embodiments and / or implementation methods for implementing the technology of the present invention, and are not intended to limit the implementation methods of the technology of the present invention in any way. Any person skilled in the art can make some modifications or alterations to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but they should still be regarded as the technology or embodiments that are substantially the same as the present invention.

[0044] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A detachable device for tracheal tube cuff pressure visual sustained negative pressure drainage, comprising a tracheal tube (10) with a cuff, the cuff of the tracheal tube (10) is connected with a first tube body (20) for inflating or deflating the cuff, characterized in that, The endotracheal cannula (10) is provided with a second tube body (30). One end of the second tube body (30) is located on the side of the airbag away from the insertion end. The other end of the second tube body (30) is connected to a suction pump (60) through a multi-port tube (50). A control valve (51) is provided on the passage connecting the multi-port tube (50) and the second tube body (30).

2. The detachable device for visible continuous negative pressure drainage of the gas cutting sleeve according to claim 1, characterized in that, One end of the first tube (20) is connected to the air bladder of the endotracheal tube (10), and the other end has a connector (22), on which a pressure detection valve (23) is connected.

3. The detachable device for visible continuous negative pressure drainage of the gas cutting sleeve according to claim 2, characterized in that, The first tube (20) of the adjacent joint (22) is covered by a first plate (21), and the side of the first plate (21) is provided with a channel that allows the first tube (20) to pass through.

4. The detachable device for visible continuous negative pressure drainage of the gas cutting sleeve according to claim 1, characterized in that, The second tube (30) is connected to the multi-port tube (50) by a transition tube assembly (40). The transition tube assembly (40) includes a main tube (41) made of light-transmitting material. The main tube (41) is hollow inside and extends through both ends. One end of the main tube (41) has a first connector (42) that communicates with the other end. The first connector (42) is connected to the second tube (30). The other end of the main tube (41) is detachably connected to a second connector (45) that is connected to the multi-port tube (50).

5. The detachable device for visible continuous negative pressure drainage of the gas cutting sleeve according to claim 4, characterized in that, The second connector (45) is connected to one end of the main body (41). A secondary tube (44) is detachably connected between the second connector (45) and the main body (41). One end of the secondary tube (44) is inserted into the inner wall of the second connector (45), and the other end has an inner ring (43). The inner ring (43) has an annular groove for insertion into the main body (41).

6. The detachable device for visible continuous negative pressure drainage of the pyrotomy sleeve according to claim 1, characterized in that, The suction pump (60) includes a housing, in which a rotatable impeller is built. The impeller includes a first impeller plate (62) and a second impeller plate (63) arranged in parallel with the first impeller plate (62) and the second impeller plate (63). An arc-shaped guide vane (64) is arranged between the first impeller plate (62) and the second impeller plate (63). The guide vane (64) is arranged in a ring and at least one side of the guide vane (64) has a reinforcing blade (67) with a sheet-like structure.

7. The detachable device for visible continuous negative pressure drainage of the pyrotomy sleeve according to claim 6, characterized in that, The first impeller plate (62) has a connecting base (66) connected to it in the middle. The connecting base (66) has a through hole and a keyway. The connecting base (66) is connected to the drive component of the housing.

8. The detachable device for visible continuous negative pressure drainage of the gas cutting sleeve according to claim 6, characterized in that, The second impeller plate (63) has a through hole in the middle and has a liquid outlet pipe (65) communicating with the through hole.

9. The detachable device for visible continuous negative pressure drainage of the blast shear cannula according to claim 6, characterized in that, The impeller has a flushing pipe assembly (70) on one side of the casing that communicates with its interior.

10. The detachable device for visible continuous negative pressure drainage of the pyrotomy sleeve according to claim 1, characterized in that, The liquid pump (60) has a liquid collection container (80) connected to its outlet end via an outlet pipe (61).

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