Subglottic airway secretion collector and auxiliary device

Abstract

The invention relates to the field of medical instruments, in particular to a subglottic airway secretion collector and an auxiliary device.The subglottic airway secretion collector comprises a collecting tank and the auxiliary device used for assisting in using the collecting tank, the top of the collecting tank is detachably connected with a cover body, and the cover body is provided with a connecting pipe used for being connected with a negative pressure generator and a connecting pipe used for being connected with a suction pipe; the connecting pipes are communicated with the interior of the collecting tank, and a blocking assembly used for preventing secretions from flowing backwards is installed on the inner top wall of the cover body; the blocking assembly comprises a vertical plate which is fixedly connected with the inner top wall of the cover body and installed between the connecting pipes, the side, close to the connecting pipes used for being connected with the negative pressure generator, of the vertical plate is fixedly connected with an installation frame, a plurality of baffles are installed in the installation frame, and the two ends of each baffle are rotationally matched with the inner side wall of the installation frame. According to the subglottic airway secretion collecting device, continuous and effective collection of subglottic airway secretions is achieved, meanwhile, the problem of backflow of the secretions is solved, the workload of medical staff is relieved, and the safety and comfort of patient nursing are improved.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a subglottic airway secretion collector and an auxiliary device. Background Art

[0002] The occurrence of ventilator-associated pneumonia (VAP), especially VAP that occurs in the first week after the start of mechanical ventilation, is mainly caused by aspiration (oral secretions, gastric contents). Therefore, how to prevent aspiration is one of the most important means of preventing VAP. Relevant measures include semi-recumbent position, post-pyloric feeding, and the most important application of subglottic drainage technology. Also known as subglottic drainage (SSD) and supraglottic drainage, it refers to an operation technique that uses a drainage tube attached to the wall of the tracheal tube to perform continuous or intermittent negative pressure drainage of the retained material on the balloon.

[0003] Conventional pharyngeal and endotracheal suction cannot clear the subglottic space secretions. The capacity of the subglottic space in patients with tracheotomy is 5-10 ml, and that in patients with endotracheal intubation is 3-5 ml. Upper airway secretions can accumulate above the endotracheal tube cuff, causing local bacterial growth. The cuff and airway wall are squeezed to form wrinkles, which makes it impossible to completely seal between the cuff and the airway wall. Even if the cuff pressure is increased to 100 cmH2O, the cuff pressure will decrease transiently with the patient's breathing and body position changes, and the retained substances can also move down into the lungs, leading to lung infection. Therefore, drainage of subglottic secretions can effectively prevent lung infection and reduce the incidence of VAP.

[0004] During the use of current collectors, they are often installed and monitored only when needed, and lack continuous and uninterrupted monitoring capabilities. This intermittent monitoring method may cause excessive accumulation of secretions in the subglottic space during certain time periods and cannot be discovered in time, thereby increasing the risk of lung infection in patients, especially the incidence of ventilator-associated pneumonia (VAP). Continuous monitoring is crucial for timely detection and treatment of secretions, but existing collectors have obvious shortcomings in this regard. At the same time, the installation, monitoring, replacement and maintenance of the collector mainly rely on manual operation of medical staff. This not only increases the workload of medical staff, but is also prone to operational errors or delays due to human factors (such as busy work, fatigue, etc.).

[0005] In summary, the existing technical problems of the subglottic airway secretion collector during use mainly include insufficient continuous monitoring capability and reliance on manual operation and prone to errors. In view of these problems, the present invention provides a subglottic airway secretion collector and an auxiliary device, which solves the problems of insufficient continuous monitoring capability and reliance on manual operation through the auxiliary device, thereby improving the efficiency of secretion collection, reducing the risk of infection for patients, and alleviating the workload of medical staff. Summary of the invention

[0006] To solve the above problems, the present invention provides a subglottic airway secretion collector and an auxiliary device, which realizes the continuous and effective collection of subglottic airway secretions, while preventing the problem of secretion backflow, reducing the workload of medical staff, and improving the safety and comfort of patient care.

[0007] In order to achieve the above-mentioned object, the technical scheme of the present invention is as follows: a subglottic airway secretion collector, comprising a suction tube for sucking secretions and a negative pressure generator for generating negative pressure, comprising a collection tank, the top of the collection tank is detachably connected to a cover body, the cover body is respectively equipped with connecting tubes for connecting the negative pressure generator and for connecting the suction tube, the connecting tubes are both connected to the collection tank, and a blocking component for preventing secretions from flowing back is installed on the top wall of the cover body;

[0008] The blocking assembly includes a vertical plate, which is fixedly connected to the top wall of the cover body and installed between the connecting pipes. The vertical plate is fixedly connected to a mounting frame on one side of the vertical plate close to the connecting pipe for connecting the negative pressure generator. A plurality of baffles are installed in the mounting frame, and both ends of the baffles are rotatably matched with the inner side wall of the mounting frame.

[0009] The technical principle of the above scheme is as follows: The subglottic airway secretion collector of the present invention is mainly composed of a suction tube, a negative pressure generator, a collection tank and a specially designed blocking component on the cover. The collection tank is used as a storage container for secretions, and its top is detachably connected to the cover, which is convenient for replacement and cleaning. The cover is not only used to close the collection tank, but also integrates a connecting pipe and a blocking component. The connecting pipe is used to connect the negative pressure generator and the suction tube respectively to ensure the connectivity of the entire system.

[0010] The main function of the blocking assembly is to prevent the negative pressure from disappearing or weakening. The internally installed baffle can automatically adjust its position when the negative pressure changes through the rotation cooperation with the inner wall of the installation frame at both ends to form an effective blocking barrier, thereby preventing the secretions in the collection tank from flowing back into the suction tube or negative pressure generator due to the pressure difference, thereby maintaining the cleanliness and safety of the system.

[0011] The above scheme has the following beneficial effects:

[0012] 1. This solution, through the designed blocking component, especially the rotating cooperation of the baffle, can quickly form a barrier when the negative pressure weakens or disappears. This design effectively solves the problem that secretions in traditional devices may flow back into the suction tube or negative pressure generator due to pressure difference, ensures the cleanliness and sterility of the system, and reduces the risk of cross infection.

[0013] 2. Traditional secretion collection methods often require medical staff to frequently replace collection containers or clean blocked pipes, which greatly increases their workload. The collector design in the present invention has efficient collection capabilities and the function of preventing backflow, which greatly reduces the number of times medical staff replace collection containers and clean pipes, thereby reducing their workload.

[0014] 3. In this solution, the stable negative pressure provided by the negative pressure generator, combined with the design of the suction tube, can efficiently collect the secretions of the subglottic airway into the collection tank, thereby improving the efficiency and effectiveness of medical care.

[0015] 4. In this solution, the detachable design of the collection tank and the cover makes it simple and quick to replace and clean the collection tank. At the same time, the ingenious design of the blocking component also facilitates inspection and cleaning, reducing maintenance costs and time.

[0016] Furthermore, the collecting tank is made of a transparent material, and scale lines are provided on the side wall of the collecting tank.

[0017] Beneficial effects: Since the collection tank is made of transparent material, medical staff can directly observe the secretions inside the collection tank and obtain real-time information without opening or disassembling the collection tank. This intuitive visual monitoring method enables medical staff to quickly determine the capacity usage of the collection tank, improving work efficiency. The scale lines on the side wall of the collection tank provide medical staff with an accurate capacity reference. By reading the scale lines, medical staff can accurately know the volume of secretions collected in the collection tank, so as to make a timely decision on whether to replace the collection tank. This precise capacity management helps to avoid the risk of overflow caused by overfilling the collection tank and ensure the stability and safety of the system.

[0018] An auxiliary device for a subglottic airway secretion collector, applicable to the above-mentioned subglottic airway secretion collector, comprising a controller module, a fixing module for keeping a collecting tank in a vertical state, a feedback module for real-time monitoring of the state of a connecting tube, and a flushing module for flushing, wherein the fixing module comprises a fixing plate, a locking assembly for fixing the auxiliary device on a bed guardrail is installed on one side of the fixing plate, and a limiting assembly for limiting the collecting tank is installed on the side of the fixing plate away from the locking assembly;

[0019] The flushing module includes a liquid storage tank, the liquid storage tank is filled with a flushing agent, a side wall of the liquid storage tank is connected to a pipeline for conveying the flushing agent, a driving component for driving the flushing agent in the pipeline is installed on the side wall of the liquid storage tank, a conversion module is installed at one end of the pipeline away from the liquid storage cavity, and the conversion module is connected to a connecting pipe in the collection tank for connecting a suction tube;

[0020] The control module is used to control the conversion module and the flushing module according to the real-time data of the feedback module. The control module connects the suction tube and the connecting tube by controlling the conversion module. When the feedback module detects blockage in the connecting tube, the control module controls the conversion module to disconnect the connection between the connecting tube and the suction tube, and connects the suction tube with the pipeline of the liquid storage chamber. The control module starts the driving component to flow the flushing agent in the liquid storage chamber into the suction tube through the pipeline for flushing. The control module controls the conversion module again to disconnect the pipeline from the suction tube, and connects the suction tube with the connecting tube.

[0021] Beneficial effects: Through the design of the fixing module, especially the combination of the fixing plate and the locking assembly, the collection tank can be kept in a vertical state during use, avoiding discomfort or safety hazards caused by shaking or tilting of the collection tank. This is especially important for patients who need to stay in bed for a long time, and helps to improve the overall treatment experience of patients.

[0022] The introduction of the feedback module enables the status of the connecting tube to be monitored in real time. Once a blockage is detected in the connecting tube, the control module can respond immediately by adjusting the connection status of the conversion module and quickly introducing the flushing module into the system to flush the blocked area. This rapid response mechanism effectively reduces the risk of complications caused by blockage and ensures the continuity and effectiveness of treatment.

[0023] The design of the flushing module realizes the automatic delivery of the flushing agent and the automatic control of the flushing process. When flushing is required, the control module starts the drive assembly to push the flushing agent in the reservoir through the pipeline into the suction tube for flushing without manual intervention. This not only simplifies the operation process and reduces the workload of medical staff, but also improves the accuracy and efficiency of flushing.

[0024] The design of the conversion module enables the system to flexibly adjust the connection status according to different needs. Under normal circumstances, the conversion module connects the suction tube with the connecting tube to ensure that the secretions can be collected smoothly. When blockage is detected, it quickly switches to flushing mode to clean the blocked area. This design improves the adaptability and flexibility of the system and can better meet the diverse needs of clinical use.

[0025] Furthermore, the limiting assembly includes several guard plates, and several slide grooves are opened on the top of the bottom wall of the fixed plate. The slide grooves are cross-distributed and fixedly connected with protrusions at the intersections. The protrusions are fixedly connected with several springs, and the ends of the springs away from the slide grooves are fixedly connected to the guard plates.

[0026] Beneficial effects: Through the ingenious combination of the guard plate, the bump and the spring, the limit assembly can ensure that the collection tank is firmly fixed in the specified position. The restoring force of the spring and the tensile force of the guard plate counteract each other, forming a dynamic balance, which effectively prevents accidents caused by the movement or tilting of the collection tank during use. This design not only improves the stability of the collection process, but also reduces the patient's discomfort caused by the shaking of the collection tank. The stable fixing method avoids the backflow of secretions caused by accidental movement or tilting of the collection tank. The design of the limit assembly effectively eliminates this hidden danger and ensures the safety of the patient. Although it is necessary to stretch the guard plate slightly to make it close to the collection tank during installation, this process is not complicated, and the design of the guard plate and the slide makes the adjustment flexible and convenient. Medical staff can make fine adjustments according to the actual size and shape of the collection tank to ensure that the collection tank is firmly and comfortably fixed.

[0027] Furthermore, a monitoring module for monitoring secretions in the collection tank is installed on the protrusion, and the monitoring module includes a pressure sensor and a timer, and the pressure sensor and the timer are both connected to the control module signal;

[0028] When the collecting tank is placed on the bump, the pressure sensor detects the placement of the collecting tank and transmits real-time monitoring data to the control module. When the control module receives the data, the timer is started, so that the timer starts to count the usage time of the collecting tank and transmits the data to the controller. At the same time, the pressure sensor monitors the pressure generated by the collecting tank on the bump in real time.

[0029] Beneficial effects: The monitoring module monitors the state of secretions in the collection canister in real time through a pressure sensor. When the secretions in the collection canister accumulate to a certain level, causing the pressure of the collection canister on the bump to change, the pressure sensor can immediately sense it and transmit the data to the control module. This real-time monitoring function helps medical staff to understand the full load of the collection canister in a timely manner, thereby avoiding the risk of overflow and leakage. The timer automatically starts when the collection canister is placed and begins to be used, accurately times the use time of the collection canister, and transmits the data to the controller. This function provides medical staff with accurate data on the use cycle of the collection canister, helps to reasonably arrange the time to replace the collection canister, and ensures the continuity and effectiveness of the secretion collection process. The presence of the monitoring module enables medical staff to manage the use of the collection canister more conveniently, without having to frequently check the full load status of the collection canister. This helps to optimize the workflow, reduce the workload of medical staff, and improve work efficiency.

[0030] Furthermore, an early warning module is installed on the fixed plate, and the early warning module is used to make abnormal reminders to medical staff according to the real-time data of the monitoring module;

[0031] When the real-time monitoring data of the pressure sensor exceeds the preset pressure data in the control module, the early warning module reminds the medical staff to replace the collection canister; when the real-time monitoring data of the timer matches the preset time data in the control module, the early warning module reminds the medical staff to replace the collection canister.

[0032] Beneficial effects: The early warning module can issue abnormal reminders to medical staff in real time based on the real-time data of the monitoring module. This immediacy ensures that medical staff can quickly respond to and deal with possible abnormal situations, such as the collection tank is about to overflow and the collection time is exceeded, thereby effectively avoiding complications or adverse events that may be caused by untimely treatment. Through the real-time monitoring and reminder of the status of the collection tank by the early warning module, medical staff can ensure that the collection tank is always in a safe and effective state of use. This helps to reduce the risk of secretion backflow caused by reasons such as overfilling the collection tank or insufficient negative pressure, thereby improving the safety and comfort of patients. The reminder function of the early warning module enables medical staff to arrange their working hours and tasks more reasonably, avoiding the time and energy wasted by frequently checking the status of the collection tank. At the same time, it also helps medical staff to better understand the changes in the patient's condition, so as to formulate more accurate treatment and care plans.

[0033] Furthermore, the conversion module includes a shell, and the side wall of the shell is provided with a flushing port for connecting to the pipe in the flushing module, a suction port for connecting to the connecting pipe in the collection tank, and a connecting port for connecting the suction pipe. A three-way solenoid valve is provided inside the shell, and the three-way solenoid valve is connected to the control module signal. The control module controls the opening and closing state of the three-way solenoid valve according to the real-time monitoring data of the feedback module.

[0034] Beneficial effects: The conversion module realizes flexible switching between the flushing port, suction port and connection port through the built-in three-way solenoid valve. This design enables the system to quickly switch between different working modes, such as switching from the normal secretion collection mode to the flushing mode and then switching back to the collection mode, without manual intervention, greatly improving the convenience and efficiency of operation. The three-way solenoid valve is connected to the control module signal, and the control module can automatically determine the current working state according to the real-time monitoring data of the feedback module and control the opening and closing state of the three-way solenoid valve. This automated control mechanism ensures that the system can respond quickly to various situations, such as starting the flushing mode in time to clear the blockage, thereby ensuring the continuity and effectiveness of the secretion collection process. Since the conversion process is completely completed automatically by the system, the possibility of human operation is reduced, thereby reducing problems caused by human errors. For example, the risk of incorrect injection of flushing agent into the collection tank or secretion leakage due to forgetting to switch modes is avoided.

[0035] Furthermore, the feedback module includes a shell, which is sleeved on the connecting pipe and connected to the suction port. The shell is a hollow structure, and a strain sensor is embedded inside the shell. The strain sensor monitors the deformation of the connecting pipe in real time and transmits the data to the control module. The control module controls the opening and closing state of the three-way solenoid valve according to the real-time monitoring data of the strain sensor.

[0036] Beneficial effects: The strain sensor can accurately sense the tiny deformation of the connecting tube during use. When the connecting tube is subjected to abnormal pressure due to blockage by secretions, its deformation will increase accordingly. This change is monitored in real time by the strain sensor and transmitted to the control module. Based on the received data, the control module can quickly determine whether the connecting tube is blocked. Once the control module confirms that there is a risk of blockage in the connecting tube, it will immediately start the corresponding processing mechanism. By controlling the opening and closing state of the three-way solenoid valve, the system can quickly switch to the flushing mode and use the flushing agent in the flushing module to clean the blocked connecting tube, thereby restoring its patency. This timely response and processing mechanism effectively avoids problems such as secretion overflow or decreased collection efficiency due to blockage.

[0037] Furthermore, the driving assembly includes a limit plate, which is fixedly connected to the outer wall of the medicine storage box, a driving member is fixedly connected to the limit plate, the driving member is fixedly connected to the liquid storage tank, the output shaft of the driving member is coaxially fixedly connected to a turntable, the turntable is symmetrically provided with extrusion blocks along the circumference, the driving member is connected to the control module signal, and the control module controls the opening and closing of the driving member according to the real-time monitoring data of the feedback module and the conversion module.

[0038] Beneficial effects: The drive component can automatically determine whether the pipeline is blocked and start the corresponding flushing procedure based on the real-time monitoring data of the feedback module and the conversion module. This automated processing method greatly reduces the need for manual intervention and improves processing efficiency, while also reducing the risk of untimely or improper processing due to human negligence. Through the cooperation of the turntable and the extrusion block, the drive component can accurately squeeze the pipeline, thereby generating a local vacuum in the pipeline and attracting the flushing agent in the liquid storage tank to enter. This precise flushing method can not only effectively remove blockages in the pipeline, but also avoid the waste of flushing agents and improve resource utilization. As the turntable continues to rotate, multiple extrusion blocks squeeze the pipeline in turn, forming a continuous flushing mechanism. This mechanism can ensure that the flushing agent is evenly distributed in the pipeline and fully acts on the blocked area, thereby improving the flushing effect.

[0039] Furthermore, the locking assembly includes a plurality of arc plates, a portion of which is fixedly connected to one side of the fixed plate, both ends of all the arc plates are fixedly connected to connecting plates, threaded holes are provided on the connecting plates, and locking screws are threadedly matched with the threaded holes.

[0040] Beneficial effects: Through the combined use of multiple curved plates, the locking assembly can fit tightly against the guardrail on the side of the bed to form a stable support structure. This design not only increases the contact area between the auxiliary device and the guardrail, but also further enhances the stability of the fixation through the tightening effect of the locking screw, preventing loosening or falling off due to patient activity or the weight of the device itself during use. The design of the locking assembly makes the installation process of the auxiliary device simple and quick. Medical staff only need to put the curved plate connected to the fixing plate on the side guardrail of the bed, and then match the remaining curved plates one by one and tighten the locking screws to complete the installation. This installation method, which does not require complex tools or professional skills, greatly improves installation efficiency and reduces installation time. Because the design of the curved plate has a certain degree of elasticity and adjustability, the locking assembly can be applied to bed guardrails of different sizes and shapes. This highly adaptable feature enables the auxiliary device to be widely used in various medical environments to meet the needs of different patients.

[0041] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is an isometric view of a collecting can in an embodiment of a subglottic airway secretion collector and an auxiliary device of the present invention;

[0043] Figure 2 It is a cross-sectional view of a collecting tank in an embodiment of a subglottic airway secretion collector and an auxiliary device of the present invention;

[0044] Figure 3 It is a schematic diagram of the installation of a subglottic airway secretion collector and an auxiliary device embodiment of the present invention;

[0045] Figure 4 It is an isometric view of an auxiliary device in an embodiment of a subglottic airway secretion collector and an auxiliary device of the present invention;

[0046] Figure 5 It is an isometric view of a conversion module in an embodiment of the subglottic airway secretion collector and auxiliary device of the present invention;

[0047] Figure 6 A rear view of an embodiment of the subglottic airway secretion collector and auxiliary device of the present invention;

[0048] Figure 7 The figure is a flow chart of an embodiment of the subglottic airway secretion collector and auxiliary device of the present invention.

[0049] The figure marks in the drawings of the specification include: 1. collecting tank; 2. cover body; 3. connecting pipe; 4. fixing plate; 5. liquid storage tank; 6. guard plate; 7. slide groove; 8. bump; 9. spring; 10. outer shell; 11. flushing port; 12. suction port; 13. connecting port; 14. shell; 15. limit plate; 16. turntable; 17. extrusion block; 18. arc plate; 19. threaded hole; 201. vertical plate; 202. mounting frame; 203. baffle; 501. pipeline. DETAILED DESCRIPTION

[0050] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0052] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] The following is further described in detail through specific implementation methods:

[0054] Embodiment 1:

[0055] As attached Figure 1 and Figure 2As shown: A subglottic airway secretion collector includes a suction tube for suctioning secretions and a negative pressure generator for generating negative pressure, including a collection tank 1, the collection tank 1 is made of a transparent material (such as polyvinyl chloride (PVC), polypropylene (PP) or polycarbonate (PC) and other medical transparent plastic materials), and the side wall of the collection tank 1 is provided with scale lines. The top of the collection tank 1 is connected to a cover body 2 by a thread, and the cover body 2 is respectively installed with connecting tubes 3 for connecting the negative pressure generator and the suction tube, and the connecting tubes 3 are both connected to the inside of the collection tank 1, and the inner top wall of the cover body 2 is installed with a blocking component for preventing secretions from flowing back.

[0056] The blocking assembly includes a vertical plate 201, which is fixedly connected to the inner top wall of the cover body 2 and installed between the connecting pipes 3. The vertical plate 201 is fixedly connected to a mounting frame 202 on one side of the vertical plate 201 close to the connecting pipe 3 for connecting the negative pressure generator. A plurality of baffles 203 are installed in the mounting frame 202, and both ends of the baffles 203 are rotatably matched with the inner wall of the mounting frame 202.

[0057] The specific implementation process is as follows: First, ensure that all parts of the collector are intact and clean and sterile, especially the collection tank 1, cover 2, suction tube, connecting tube 3 and blocking assembly. Check whether the negative pressure generator is in normal working condition and ensure that there is sufficient power supply.

[0058] Place the collection tank 1 in a stable position to ensure its stability. Install the cover 2 on the top of the collection tank 1 by threaded connection to ensure good sealing to prevent air leakage. Use a dedicated pipeline to connect the negative pressure generator to the connecting tube 3 on the cover 2 for connecting the negative pressure generator, and ensure that the connection is tight and leak-free. Insert one end of the suction tube into the patient's subglottic airway, and connect the other end to the connecting tube 3 on the cover 2 for connecting the suction tube, and also ensure that the connection is tight and leak-free.

[0059] Turn on the switch of the negative pressure generator to start working and generate negative pressure. The negative pressure is transmitted to the suction tube through the connecting tube 3, and the secretions in the subglottic airway of the patient are sucked out and enter the collection tank 1 through the suction tube. The secretions are deposited in the collection tank 1 by the negative pressure and gravity, while the air is discharged out of the system through the negative pressure generator.

[0060] During the collection process, the baffle 203 will automatically rotate under the impact of the airflow, playing a certain blocking role, preventing the secretions from flowing back into the negative pressure generator due to excessive airflow.

[0061] The collected amount of secretions can be conveniently observed through the scale lines on the side wall of the collecting tank 1 and recorded as needed.

[0062] When a certain amount is collected, the negative pressure generator can be turned off, all connections can be disconnected, and the collection tank 1 can be removed for subsequent processing (such as dumping or analyzing the secretions, etc.).

[0063] Embodiment 2:

[0064] As attached Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, the difference from Example 1 is that an auxiliary device for a subglottic airway secretion collector is applicable to the subglottic airway secretion collector in the above-mentioned embodiment, and the auxiliary device of this embodiment assists the collector to collect secretions. It includes a controller module, a fixing module for keeping the collection tank 1 in a vertical state, a feedback module for real-time monitoring of the state of the connecting tube 3, and a flushing module for flushing. The fixing module includes a fixing plate 4. In this embodiment, the fixing plate 4 is an L-shaped fixing plate 4. A locking assembly for fixing the auxiliary device on the guardrail of the bed is installed on one side of the fixing plate 4. In this embodiment, the locking assembly is a plurality of straps. A limiting assembly for limiting the collection tank 1 is installed on the side of the fixing plate 4 away from the locking assembly; the limiting assembly includes a plurality of guard plates 6. A plurality of slide grooves 7 are provided on the top of the bottom wall of the fixing plate 4. The slide grooves 7 are cross-distributed and fixedly connected with a protrusion 8 at the intersection. The protrusion 8 is fixedly connected with a plurality of springs 9. The ends of the springs 9 away from the slide grooves 7 are all fixedly connected with the guard plates 6.

[0065] A monitoring module for monitoring secretions in the collecting tank 1 is installed on the protrusion 8, and the monitoring module includes a pressure sensor and a timer, and both the pressure sensor and the timer are connected to the control module signal; when the collecting tank 1 is placed on the protrusion 8, the pressure sensor detects that the collecting tank 1 is placed, and transmits real-time monitoring data to the control module. When the control module receives the data, the timer is started, so that the timer starts to count the usage time of the collecting tank 1 and transmits the data to the controller, and at the same time, the pressure sensor monitors the pressure generated by the collecting tank 1 on the protrusion 8 in real time.

[0066] The flushing module includes a liquid storage tank 5, which is filled with flushing agent. The side wall of the liquid storage tank 5 is connected to a pipe 501 for conveying the flushing agent. The side wall of the liquid storage tank 5 is installed with a driving component for driving the flushing agent in the pipe 501. In this embodiment, the driving component is a water pump. The input end of the water pump is connected to the liquid storage tank 5, and the output end of the water pump is connected to the pipe 501. A conversion module is installed at one end of the pipe 501 away from the liquid storage cavity. The conversion module is connected to the connecting pipe 3 in the collection tank 1 for connecting the suction pipe; the conversion module includes a shell 10. The side wall of the shell 10 is provided with a flushing port 11 for connecting the pipe 501 in the flushing module, a suction port 12 for connecting the connecting pipe 3 in the collection tank 1, and a connecting port 13 for connecting the suction pipe. A three-way solenoid valve is provided inside the shell 10, and the three-way solenoid valve is connected to the control module signal. The feedback module includes a shell 14, which is sleeved on the connecting pipe 3 and connected to the suction port 12. The shell 14 is a hollow structure, and a strain sensor is embedded in the shell 14. The strain sensor monitors the deformation of the connecting pipe 3 in real time and transmits the data to the control module.

[0067] The control module is used to control the conversion module and the flushing module according to the real-time data of the feedback module. The control module connects the suction tube and the connecting tube 3 by controlling the conversion module. When the feedback module detects blockage in the connecting tube 3, the control module controls the conversion module to disconnect the connecting tube 3 from the suction tube, and connects the suction tube with the pipe 501 of the liquid storage chamber. The control module starts the driving component to flow the flushing agent in the liquid storage chamber into the suction tube through the pipe 501 for flushing. The control module controls the conversion module again to disconnect the pipe 501 from the suction tube, and connects the suction tube with the connecting tube 3.

[0068] The specific implementation process is as follows: fix the auxiliary device to the guardrail on the side of the patient's bed by strapping to ensure that it will not shake or fall off during operation. Connect the negative pressure generator to the connecting tube 3 on the cover 2 for connecting the negative pressure generator, connect another connecting tube 3 connected to the suction tube to the suction port 12 in the shell 10 of the conversion module for connecting the connecting tube 3 in the collection tank 1, connect the flushing port 11 in the shell 10 of the conversion module for connecting the pipeline 501 in the flushing module to the pipeline 501, insert one end of the suction tube into the patient's subglottic airway, and connect the other end to the connecting port 13 on the shell 10 for connecting the suction tube.

[0069] Then install the collection tank 1 on the limiting assembly of the fixed plate 4. When placing, the collection tank 1 is placed on the protrusion 8 between all the guard plates 6. Since the initial state of the spring 9 is compressed, it is necessary to forcefully stretch the guard plates 6 outward until the guard plates 6 can fit tightly against the four sides of the collection tank 1. During the stretching process, be careful to keep the force even to avoid excessive force that may damage the spring 9 or deform the guard plates 6. When the guard plates 6 fit tightly against the four sides of the collection tank 1, the restoring force of the spring 9 will counteract the stretching force, and this counteracting force will firmly fix the collection tank 1 between the protrusion 8 and the guard plates 6. Through the above steps, the collection tank 1 will be safely and firmly fixed on the auxiliary device, and the limiting assembly can prevent the collection tank 1 from moving or tilting during use, causing the secretions in the collection tank 1 to flow back.

[0070] After placement is completed, the medical staff starts the negative pressure generator. At this time, the negative pressure generator starts to work, providing the necessary suction force for the suction tube to suck the secretions in the subglottic airway into the collection canister 1. At the same time, the pressure sensor installed on the boss will produce corresponding pressure changes due to the placement of the collection canister 1 (and the subsequent weight increase caused by the entry of secretions).

[0071] When the collection tank 1 is correctly placed on the boss, the pressure sensor immediately senses this change and transmits the data to the control module. After receiving the data from the pressure sensor, the control module confirms that the collection tank 1 is in place and starts the timer accordingly. The timer then starts working and monitors the use time of the collection tank 1 in real time to ensure that the medical staff can be reminded to replace it in time when the preset replacement cycle (such as 24 hours) is reached.

[0072] During the continuous operation of the negative pressure generator, the secretions are sucked into the collection tank 1 through the suction tube. As the secretions continue to accumulate, the weight of the collection tank 1 gradually increases, causing the pressure monitored by the pressure sensor to change accordingly. The pressure sensor monitors these pressure changes in real time and transmits the monitoring data to the control module. After receiving the monitoring data from the pressure sensor, the control module uses a preset algorithm to convert these pressure values ​​into the amount of secretions (this conversion process is based on the linear relationship between pressure and weight). After the conversion is completed, the control module can display the amount of secretions in real time. At the same time, the control module can automatically record the real-time monitoring values ​​of the pressure sensor according to a preset time period (such as every hour) for reference by medical staff.

[0073] During the normal collection process, as the negative pressure generator works, the secretions are smoothly sucked into the collection tank 1 through the suction tube. At this time, the connecting tube 3 should be in a relatively stable state, and the deformation data monitored by the strain sensor also fluctuates within the normal range. However, when the suction tube encounters a blockage, such as the secretions are too viscous to block the pipe 501, or the fluidity is reduced and it is difficult to be attracted, the connecting tube 3 will sense the abnormal resistance from one side of the suction tube. Although the negative pressure generator is still working and generating negative pressure, due to the blockage of the suction tube, this negative pressure cannot be effectively transmitted to the collection tank 1, thereby forming a "pressure holding" state inside the connecting tube 3. This "pressure holding" state will cause the connecting tube 3 to deform, which is specifically manifested as a slight expansion or distortion of the tube wall. The strain sensor can accurately capture these deformation signals and convert them into electrical signals and output them to the control module. After the control module receives the abnormal signal from the strain sensor, it will immediately analyze and process it.

[0074] When the control module receives the abnormal data from the strain sensor, the control module will start the three-way solenoid valve, accurately control the opening and closing of the valve, and temporarily disconnect the connection between the connecting pipe 3 and the suction tube. It can prevent the flushing agent from directly flowing into the connecting pipe 3 or the collection system, and ensure that the flushing process is only performed on the suction tube. The control module adjusts the state of the three-way solenoid valve again, connects the pipe 501 of the flushing module with the suction tube, and ensures that the flushing agent can enter the suction tube accurately. After the flushing pipe 501 is connected, the control module will start the water pump. The water pump extracts the flushing agent from the liquid storage tank 5 and pumps it into the suction tube through the pipe 501. The flow of the flushing agent will help clear the blockage in the suction tube and restore its patency. The control module will determine whether the flushing is completed according to the preset flushing time or flushing agent dosage. Once the flushing is completed, the control module will start the three-way solenoid valve again, disconnect the pipe 501 of the flushing module from the suction tube, and restore the connection between the connecting pipe 3 and the suction tube, and continue to collect and process the secretions.

[0075] Embodiment 3:

[0076] As attached Figure 7 As shown, the difference from Example 2 is that an early warning module is installed on the fixed plate 4, and the early warning module is used to make abnormal reminders to medical staff according to the real-time data of the monitoring module; the early warning module in this embodiment includes a buzzer and an indicator light.

[0077] When the real-time monitoring data of the pressure sensor exceeds the preset pressure data in the control module, the early warning module reminds the medical staff to replace the collection tank 1; when the real-time monitoring data of the timer is consistent with the preset time data in the control module, the early warning module reminds the medical staff to replace the collection tank 1.

[0078] The specific implementation process is as follows: When an abnormal situation is detected, the buzzer sounds an alarm to attract the attention of medical staff. The indicator light indicates the current status through different colors of light (such as red for warning), which makes it easy for medical staff to quickly identify the problem.

[0079] The maximum collection weight (such as preset pressure data) and replacement cycle (such as 24-hour preset time data) of the collection tank 1 are preset in the control module. The pressure sensor continuously monitors the weight of the collection tank 1 and transmits real-time data to the control module. The control module compares the real-time data with the preset maximum collection weight. The timer records the use time of the collection tank 1 and transmits the real-time data to the control module. The control module compares the real-time time with the preset 24-hour replacement cycle.

[0080] If the real-time pressure data exceeds the preset maximum collection weight, the control module determines it as an abnormal situation and triggers the early warning module. At this time, the buzzer sounds an alarm and the indicator light turns on (such as red), reminding the medical staff to replace the collection tank 1.

[0081] If the real-time time reaches or exceeds the preset 24-hour replacement cycle, even if the collection tank 1 has not reached the maximum collection weight, the control module will determine that it needs to be replaced and trigger the early warning module. Similarly, the buzzer and indicator light will issue a warning.

[0082] When the medical staff hears the buzzer alarm or sees the indicator light on, they should immediately go to check and replace the collection tank 1. After the replacement is completed, the medical staff can manually reset the timer and confirm that the collection tank 1 is empty or the weight is within the allowable range to eliminate the warning state. After replacing the collection tank 1 and resetting the system, the monitoring module continues to work, and the warning module is in standby state, waiting for the next possible abnormal situation.

[0083] Embodiment 4:

[0084] As attached Figure 4 As shown, the difference from Example 3 is that the driving assembly includes a limit plate 15, the limit plate 15 is fixedly connected to the outer wall of the medicine storage box, and a driving member is fixedly connected to the limit plate 15. In this embodiment, the driving member is a motor, and the driving member is fixedly connected to the liquid storage tank 5. The output shaft of the driving member is coaxially fixedly connected to a turntable 16, and the side walls of the turntable 16 are symmetrically provided with extrusion blocks 17. The driving member is connected to the control module signal, and the control module controls the opening and closing of the driving member according to the real-time monitoring data of the feedback module and the conversion module.

[0085] The specific implementation process is as follows: the pipeline 501 is embedded in the inner circumferential position of the limit plate 15. When the control module receives the abnormal signal of the strain sensor, the control module adjusts the state of the three-way solenoid valve to connect the flushing pipeline 501. At the same time, the control module starts the motor, and the output shaft of the motor starts to rotate, driving the turntable 16 to rotate synchronously. The extrusion blocks 17 on the turntable 16 are symmetrically distributed along the circumference. As the turntable 16 rotates, the extrusion blocks 17 will squeeze the pipeline 501 in turn. When the first extrusion block 17 contacts the pipeline 501, it starts to compress the pipeline 501. This squeezing action generates a local vacuum in the pipeline 501, thereby attracting the flushing agent in the liquid storage tank 5 to enter through the pipeline 501. At this time, the flushing agent is sucked in and temporarily stored in the part of the pipeline 501 before it is squeezed. As the turntable 16 continues to rotate, the second extrusion block 17 begins to contact and squeeze the pipeline 501. This squeezing pushes the flushing agent previously stored in the pipeline 501 toward the direction of the suction tube. Since the pipe 501 of the flushing module is connected to the suction tube at this time, the flushing agent can smoothly enter the suction tube to flush the blocked part.

[0086] The squeezing blocks 17 on the turntable 16 will continuously and alternately squeeze the pipe 501 to form a continuous flushing action. Each squeezing block 17 plays the role of sucking and pushing the flushing agent to ensure that the flushing process is continuous and effective. Once the set conditions are met (such as pushing the flushing agent once as a standard amount), the control module will send a signal to stop the motor and adjust the state of the three-way solenoid valve to restore the connection between the connecting tube 3 and the suction tube. After the flushing is completed, the system returns to the normal secretion collection state. The control module continues to monitor the data of the strain sensor and other sensors to ensure the stable operation of the system.

[0087] When the control module records the monitoring data of the pressure sensor, it needs to combine the driving times of the driving component and subtract the standard amount of flushing agent to make the recorded data more accurate.

[0088] Embodiment 5:

[0089] As attached Figure 6 As shown, the difference from Example 4 is that the locking assembly includes a plurality of arc plates 18, a part of which is fixedly connected to one side of the fixing plate 4, and both ends of all the arc plates 18 are integrally formed with connecting plates, and the connecting plates are provided with threaded holes 19, and the threaded holes 19 are threadedly matched with locking screws.

[0090] The specific implementation process is as follows: when in use, the auxiliary device of the present invention is installed on the side guardrail of the patient's bed using the locking assembly. That is, the arc plate 18 connected to the fixing plate 4 is sleeved on the side guardrail of the bed close to the patient, the remaining arc plates 18 are respectively matched with the sleeved arc plates 18, and then the locking screws are inserted into the threaded holes 19 and tightened, thereby fixing the auxiliary device on the side guardrail of the bed.

[0091] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A subglottic airway secretion collector, comprising a suction tube for suctioning secretions and a negative pressure generator for generating negative pressure, characterized in that: The collecting tank (1) comprises a cover body (2) detachably connected to the top of the collecting tank (1), a connecting pipe (3) for connecting a negative pressure generator and a connecting pipe (3) for connecting a suction tube are respectively installed on the cover body (2), the connecting pipes (3) are both connected to the inside of the collecting tank (1), and a blocking component for preventing secretions from flowing back is installed on the top wall of the cover body (2); The blocking assembly comprises a vertical plate (201), the vertical plate (201) being fixedly connected to the inner top wall of the cover body (2), the vertical plate (201) being installed between the connecting pipes (3), a side of the vertical plate (201) close to the connecting pipe (3) for connecting the negative pressure generator being fixedly connected to a mounting frame (202), a plurality of baffles (203) being installed in the mounting frame (202), and two ends of the baffles (203) being rotatably matched with the inner side wall of the mounting frame (202).

2. The subglottic airway secretion collector according to claim 1, characterized in that: The collecting tank (1) is made of a transparent material, and scale lines are provided on the side wall of the collecting tank (1).

3. An auxiliary device for a subglottic airway secretion collector, suitable for the subglottic airway secretion collector according to any one of claims 1-2, characterized in that: The device comprises a controller module, a fixing module for keeping the collection tank (1) in a vertical state, a feedback module for real-time monitoring of the state of the connecting pipe (3), and a flushing module for flushing, wherein the fixing module comprises a fixing plate (4), a locking assembly for fixing the auxiliary device on the guardrail of the bed is installed on one side of the fixing plate (4), and a limiting assembly for limiting the position of the collection tank (1) is installed on the side of the fixing plate (4) away from the locking assembly; The flushing module comprises a liquid storage tank (5), the liquid storage tank (5) is filled with a flushing agent, a side wall of the liquid storage tank (5) is connected to a pipeline (501) for conveying the flushing agent, a driving component for driving the flushing agent in the pipeline (501) is installed on the side wall of the liquid storage tank (5), a conversion module is installed at one end of the pipeline (501) away from the liquid storage chamber, and the conversion module is connected to a connecting pipe (3) in the collection tank (1) for connecting a suction pipe; The control module is used to control the conversion module and the flushing module according to the real-time data of the feedback module. The control module connects the suction tube and the connecting tube (3) by controlling the conversion module. When the feedback module detects that a blockage occurs in the connecting tube (3), the control module controls the conversion module to disconnect the connecting tube (3) from the suction tube, and connects the suction tube to the pipe (501) of the liquid storage chamber. The control module starts the driving component, and the flushing agent in the liquid storage chamber flows into the suction tube through the pipe (501) for flushing. The control module controls the conversion module again to disconnect the pipe (501) from the suction tube, and connects the suction tube to the connecting tube (3).

4. The auxiliary device of the subglottic airway secretion collector according to claim 3, characterized in that: The limiting assembly comprises a plurality of guard plates (6), a plurality of slide grooves (7) are provided on the top of the bottom wall of the fixed plate (4), the slide grooves (7) are cross-distributed and a protrusion (8) is fixedly connected at the intersection, the protrusion (8) is fixedly connected to a plurality of springs (9), and the ends of the springs (9) away from the slide grooves (7) are fixedly connected to the guard plates (6).

5. The auxiliary device of the subglottic airway secretion collector according to claim 4, characterized in that: A monitoring module for monitoring secretions in the collection tank (1) is mounted on the protrusion (8), the monitoring module comprising a pressure sensor and a timer, both of which are connected to the control module by signal. When the collecting tank (1) is placed on the protrusion (8), the pressure sensor detects that the collecting tank (1) is placed and transmits real-time monitoring data to the control module. When the control module receives the data, the timer is started, so that the timer starts to count the use time of the collecting tank (1) and transmits the data to the controller. At the same time, the pressure sensor monitors the pressure generated by the collecting tank (1) on the protrusion (8) in real time.

6. The auxiliary device of the subglottic airway secretion collector according to claim 5, characterized in that: An early warning module is installed on the fixed plate (4), and the early warning module is used to remind medical staff of abnormalities based on the real-time data of the monitoring module; When the real-time monitoring data of the pressure sensor exceeds the preset pressure data in the control module, the early warning module reminds the medical staff to replace the collection tank (1); when the real-time monitoring data of the timer matches the preset time data in the control module, the early warning module reminds the medical staff to replace the collection tank (1).

7. The auxiliary device of the subglottic airway secretion collector according to claim 6, characterized in that: The conversion module comprises a housing (10), a flushing port (11) for connecting to a pipeline (501) in the flushing module, a suction port (12) for connecting to a connecting pipe (3) in a collection tank (1), and a connecting port (13) for connecting to a suction pipe are provided on a side wall of the housing (10), a three-way solenoid valve is provided inside the housing (10), the three-way solenoid valve is connected to a control module signal, and the control module controls the opening and closing state of the three-way solenoid valve according to real-time monitoring data of the feedback module.

8. The auxiliary device of the subglottic airway secretion collector according to claim 7, characterized in that: The feedback module comprises a shell (14), which is sleeved on the connecting pipe (3) and connected to the suction port (12). The shell (14) is a hollow structure, and a strain sensor is embedded in the shell (14). The strain sensor monitors the deformation of the connecting pipe (3) in real time and transmits the data to the control module. The control module controls the opening and closing state of the three-way solenoid valve according to the real-time monitoring data of the strain sensor.

9. The auxiliary device of the subglottic airway secretion collector according to claim 8, characterized in that: The driving assembly comprises a limit plate (15), the limit plate (15) is fixedly connected to the outer wall of the medicine storage box, a driving member is fixedly connected to the limit plate (15), the driving member is fixedly connected to the liquid storage box (5), a rotating disk (16) is coaxially fixedly connected to the output shaft of the driving member, and the rotating disk (16) is symmetrically provided with extrusion blocks (17) along the circumference, the driving member is connected to the control module signal, and the control module controls the opening and closing of the driving member according to the real-time monitoring data of the feedback module and the conversion module.

10. The auxiliary device of the subglottic airway secretion collector according to claim 9, characterized in that: The locking assembly comprises a plurality of arc-shaped plates (18), a part of which is fixedly connected to one side of the fixing plate (4), both ends of all the arc-shaped plates (18) are fixedly connected to connecting plates, threaded holes (19) are provided on the connecting plates, and locking screws are threadedly matched with the threaded holes (19).

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