Intelligent sputum suction device for pneumology department

Abstract

The invention relates to the technical field of medical instruments, in particular to an intelligent sputum suction device for the pneumology department, which comprises a shell, and a sputum suction execution module, a negative pressure generation module and a control module are mounted on the shell; the sputum suction execution module comprises a double-cavity sputum suction tube, a telescopic driving assembly capable of automatically adjusting the insertion depth and a sensing unit used for monitoring the sputum state, the double-cavity sputum suction tube comprises a negative pressure channel and an atomization channel, one end of the negative pressure channel is communicated with the negative pressure generation module, and a multi-point negative pressure suction port is formed in the other end of the negative pressure channel; one end of the atomization channel communicates with a gas-liquid mixing cavity, and the gas-liquid mixing cavity is installed in the shell. The control module is electrically connected with the sensing unit of the sputum suction execution module, the telescopic driving assembly and the negative pressure generation module. The control module dynamically adjusts the negative pressure intensity of the negative pressure generation module and the moving path of the double-cavity sputum suction tube according to sputum state data fed back by the sensing unit. The device is used for reducing the risk of cross infection and airway injury, and meets the clinical requirements of different groups of patients.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an intelligent sputum suction device for respiratory medicine. Background Technology

[0002] Suctioning is a crucial step in respiratory clinical nursing, primarily used to help patients with thick sputum who are unable to expectorate independently (such as critically ill patients, elderly patients, and infants) clear respiratory secretions, maintain airway patency, and prevent lung infections and the risk of suffocation. Currently used suctioning devices have numerous technical defects that seriously affect suctioning effectiveness and patient safety, as detailed below:

[0003] Imbalance between negative pressure regulation and individual airway adaptability: The negative pressure levels of existing devices are mostly fixed, and cannot be dynamically adjusted according to the differences in airway diameter among different groups such as infants with narrow airways and elderly patients with relaxed airways, as well as the viscosity of sputum. Excessive negative pressure can easily lead to airway mucosal damage and bleeding, while insufficient negative pressure will cause sputum residue and increase the risk of infection. At the same time, the insertion depth of the suction catheter depends on the experience of medical staff. Insertion that is too deep may damage the carina, while insertion that is too shallow will not be able to effectively absorb deep sputum.

[0004] Poor coordination of functional modules and cumbersome operation procedures: airway humidification before suctioning, sputum adsorption during suctioning, and tubing cleaning after suctioning all require multiple devices to complete. The parameters of different devices cannot be coordinated and matched, resulting in lengthy operation procedures and delays in emergency treatment. Moreover, nebulization humidification and negative pressure adsorption are mostly operated independently, and the supply of nebulized liquid and the intensity of negative pressure are not linked, which can easily lead to insufficient sputum dilution or excessively high airway pressure.

[0005] Insufficient personalized adaptation capability: Existing devices do not have preset adaptation parameters for the airway characteristics of patients of different ages and physical conditions. Medical staff need to make repeated adjustments, which not only increases the operational burden, but also easily affects the suctioning effect due to improper parameter settings. This is especially true for infants and elderly patients with fragile airways, which limits their clinical applicability.

[0006] To address the deficiencies in the existing technology, the present invention provides an intelligent sputum suction device for respiratory medicine. Summary of the Invention

[0007] To address the aforementioned issues, this invention provides an intelligent sputum suction device for respiratory medicine, which integrates negative pressure adsorption and nebulization humidification. Through the combination of mechanical structure linkage and intelligent control, it improves the accuracy of negative pressure regulation, airway adaptability, and ease of operation, reduces the risk of cross-infection and airway damage, and is suitable for the clinical needs of different patient groups.

[0008] To achieve the above objectives, the technical solution of the present invention is as follows: An intelligent sputum suction device for respiratory medicine includes a housing, on which a sputum suction execution module for adsorbing respiratory secretions, a negative pressure generating module for generating negative pressure suction, and a control module for coordinating the operation of each module are installed. The sputum suction execution module includes a dual-lumen suction tube, a telescopic drive assembly that can automatically adjust the insertion depth, and a sensing unit for monitoring the state of sputum. The dual-lumen suction tube includes a negative pressure channel and a nebulization channel. One end of the negative pressure channel is connected to the negative pressure generating module, and the other end of the negative pressure channel is equipped with multiple negative pressure suction ports. One end of the nebulization channel is connected to a gas-liquid mixing chamber, which is installed inside the housing.

[0009] The control module is electrically connected to the sensing unit, telescopic drive component, and negative pressure generating module of the suction execution module, respectively. The control module dynamically adjusts the negative pressure intensity of the negative pressure generating module and the movement path of the dual-lumen suction tube based on the sputum status data fed back by the sensing unit.

[0010] Furthermore, the negative pressure generating module includes a first negative pressure chamber, a second negative pressure chamber, and a driving component. The first negative pressure chamber, the second negative pressure chamber, and the driving component are all located inside the housing. A first piston and a second piston are respectively installed in the first negative pressure chamber and the second negative pressure chamber. A rotating shaft is coaxially fixedly connected to the output shaft of the driving component. The end of the rotating shaft away from the driving component is rotatably engaged with the housing. Several eccentric wheels are eccentrically fixedly connected to the rotating shaft. Each eccentric wheel is slidably engaged with a connecting rod. The end of the connecting rod away from the eccentric wheel is hinged to the first piston and the second piston, respectively. The driving component and the control module are signal connected.

[0011] Furthermore, the telescopic drive assembly includes a transmission rack fixedly connected to the outer wall of the dual-lumen suction tube. The transmission rack meshes with a gear, and a central shaft is coaxially fixedly connected to the gear. The central shaft rotates with the side wall of the housing. A synchronous belt is sleeved on the central shaft. An electromagnetic clutch is installed on the output shaft of the drive component. The end of the synchronous belt away from the central shaft is sleeved on the electromagnetic clutch. The electromagnetic clutch is signal-connected to the control module. The control module controls the on / off state of the electromagnetic clutch based on the data fed back from the sensing unit, thereby adjusting the insertion depth of the dual-lumen suction tube.

[0012] Furthermore, the sensing unit includes a sputum viscosity sensor, an airway pressure sensor, and a blood oxygen saturation sensor. All three sensors are connected to the control module. The sputum viscosity sensor is used to detect the viscosity of respiratory secretions in real time. It is embedded in the inner wall of the multi-point negative pressure suction port of the double-lumen suction tube, and the detection end face of the sputum viscosity sensor is flush with the inner wall of the negative pressure channel. The airway pressure sensor is used to monitor the real-time pressure in the airway during suctioning. It is installed on the outer wall of the double-lumen suction tube near the patient. The blood oxygen saturation sensor is used to monitor the patient's blood oxygen saturation in real time during suctioning. The detection probe of the blood oxygen saturation sensor is detachably fixed to the patient's fingertip or earlobe.

[0013] Furthermore, the end of the negative pressure channel away from the multi-point negative pressure suction port is connected to a sputum collection container. The sputum collection container is detachably installed on the outer wall of the shell. A three-way pipe is connected to the sputum collection container. The two ends of the three-way pipe away from the sputum collection container are respectively connected to the first negative pressure chamber and the second negative pressure chamber.

[0014] Furthermore, it also includes an atomization adjustment component, which includes an adjustment valve. The adjustment valve is embedded at the connection between the gas-liquid mixing chamber and the atomization channel. The adjustment valve is signal-connected to the control module, and the control module controls the opening and closing of the adjustment valve based on the real-time monitoring data of the airway pressure sensor.

[0015] Furthermore, a one-way valve is provided at the inlet of the sputum collection container. The valve disc of the one-way valve is fixedly connected to a pull rope, and the end of the pull rope away from the one-way valve is connected to the outer wall of the double-lumen suction tube. When the telescopic drive assembly drives the double-lumen suction tube to be inserted or pulled out, the axial movement of the double-lumen suction tube pulls the one-way valve to open or close through the pull rope. When suctioning, the double-lumen suction tube is inserted, the pull rope pulls the valve disc to open, and the inlet is open. After suctioning, the double-lumen suction tube is pulled out, the pull rope loosens, and the valve disc of the one-way valve closes.

[0016] Furthermore, the housing also includes a pipeline self-cleaning module, which comprises a cleaning fluid storage tank and a high-pressure nozzle. The high-pressure nozzle is installed at the connection between the negative pressure channel and the first negative pressure chamber. The high-pressure nozzle is connected to a pipeline, with the end of the pipeline away from the high-pressure nozzle connected to the cleaning fluid storage tank. A solenoid valve is installed on the pipeline, and the solenoid valve is signal-connected to the control module. When the electromagnetic clutch is disengaged and the dual-chamber suction tube stops moving, the control module simultaneously opens the solenoid valve, and the high-pressure nozzle sprays cleaning fluid into the negative pressure channel.

[0017] Furthermore, the control module is connected to a storage unit and an early warning unit. The storage unit is used to store airway parameters, sputum viscosity, and matching thresholds for negative pressure intensity for patients of different ages. Based on the airway pressure and blood oxygen saturation data fed back by the sensor unit, the control module triggers the early warning unit to issue an early warning when the airway pressure exceeds the preset pressure threshold or the blood oxygen saturation is lower than the preset blood oxygen saturation threshold. The control module also automatically generates a personalized sputum suction plan based on historical suctioning data and the matching thresholds in the storage unit.

[0018] Furthermore, the early warning unit includes an audible and visual warning device and a vibration warning device, both of which are installed on the top of the housing. When the airway pressure is abnormal, the audible and visual warning device emits a flashing red light and a continuous buzzer, while the vibration warning device simultaneously starts low-frequency vibration. When the blood oxygen saturation is lower than the preset blood oxygen saturation threshold, the audible and visual warning device emits a flashing yellow light and an intermittent buzzer, while the vibration warning device starts high-frequency vibration. At the same time, the control module automatically reduces the negative pressure intensity of the negative pressure generating module and controls the telescopic drive component to pull out part of the double-lumen suction tube until the airway pressure or blood oxygen saturation returns to a safe range.

[0019] The above approach has the following beneficial effects:

[0020] 1. This solution achieves dynamic adaptation of negative pressure intensity to sputum viscosity and airway pressure through the linkage of the control module, sensing unit, and negative pressure generation module. It can also generate personalized suctioning plans by combining historical data. Compared with traditional suctioning devices with fixed negative pressure levels and relying only on general parameters, this solution greatly improves the accuracy of suctioning parameter adaptation and effectively avoids the problems of airway mucosa damage due to excessive negative pressure or incomplete suctioning due to insufficient negative pressure. It is especially suitable for groups with large differences in airway tolerance, such as infants and the elderly.

[0021] 2. This design incorporates a pull-cord linkage structure between the double-lumen suction tube and the one-way valve, enabling synchronized insertion / removal of the suction tube and opening / sealing of the sputum collection container inlet. Compared to traditional devices that require manual opening of the sputum collection channel and open placement of the sputum collection container after suctioning, this design simplifies the operation process, saves time in emergency suction scenarios, prevents sputum reflux and odor spread, and eliminates the disinfection and isolation hazards caused by prolonged placement of the sputum collection container in traditional devices.

[0022] 3. This solution uses the on / off state of the electromagnetic clutch as the trigger signal for pipeline self-cleaning, achieving seamless synchronization between suctioning cessation and cleaning initiation. Furthermore, cleaning waste and sputum flow into the sputum collection tank for unified treatment. Compared with traditional technologies that require manual disassembly of the pipeline for cleaning after suctioning and separate treatment of sputum and cleaning waste, this solution avoids the tediousness and time-consuming nature of manual cleaning, covers the dead corners of the passage that are difficult to reach by manual cleaning, reduces the operational burden on medical staff, and solves the risk of cross-infection caused by residual sputum in the pipeline.

[0023] 4. This solution adopts a multi-mode early warning design with sound, light, and vibration. It can output differentiated early warning signals according to two different situations: abnormal airway pressure and decreased blood oxygen saturation. At the same time as the early warning, it can automatically start active regulation to reduce negative pressure and partially extubate. Compared with traditional technology devices that only have single sound and light warning and no active intervention function, it can quickly attract the attention of medical staff and accurately distinguish the abnormality type. At the same time, it can alleviate dangerous situations in a timely manner, avoid airway damage or aggravation of hypoxia, and greatly improve the safety of sputum suction operation.

[0024] 5. This solution integrates multiple functions such as sputum suction, nebulization and humidification, tubing self-cleaning, and multi-parameter monitoring and early warning. Each module achieves efficient cooperation through mechanical linkage and electronic control. Compared with traditional technology devices that have scattered functions and require the replacement of multiple devices to complete related operations before and after sputum suction, it significantly shortens the operation process, reduces the cumbersome steps of device switching, improves the continuity and efficiency of sputum suction operation, and at the same time reduces the maintenance cost and space occupation of multiple devices. Attached Figure Description

[0025] Figure 1 This is an isometric view of an embodiment of the intelligent sputum suction device for respiratory medicine of the present invention;

[0026] Figure 2 This is a rear view of an embodiment of the intelligent sputum suction device for respiratory medicine of the present invention;

[0027] Figure 3 for Figure 2 A cross-sectional view along the AA direction;

[0028] Figure 4 for Figure 2 A cross-sectional view along the BB direction;

[0029] Figure 5 This is a top view of an embodiment of the intelligent sputum suction device for respiratory medicine of the present invention;

[0030] Figure 6 for Figure 5 A cross-sectional view along the CC direction;

[0031] Figure 7 This is a schematic diagram of the installation of the eccentric wheel and connecting rod in an embodiment of the intelligent sputum suction device for respiratory medicine of the present invention;

[0032] Figure 8 This is a cross-sectional view of the sputum collection container in an embodiment of the intelligent sputum suction device for respiratory medicine of the present invention.

[0033] The reference numerals in the accompanying drawings include: 1. Housing; 2. Negative pressure channel; 3. Nebulization channel; 4. Gas-liquid mixing chamber; 5. First negative pressure chamber; 6. Second negative pressure chamber; 7. Drive component; 8. Rotating shaft; 9. Eccentric wheel; 10. Connecting rod; 11. Transmission rack; 12. Gear; 13. Central shaft; 14. Synchronous belt; 15. Sputum collection container; 16. T-connector. Detailed Implementation

[0034] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0035] In the description of this invention, it should 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. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] The following detailed description illustrates the specific implementation method:

[0038] Example 1:

[0039] As attached Figures 1 to 8As shown: An intelligent sputum suction device for respiratory medicine includes a housing 1. The housing 1 is equipped with a suction execution module for adsorbing respiratory secretions, a negative pressure generating module for generating negative pressure suction, and a control module for coordinating the operation of all modules. The suction execution module includes a dual-lumen suction tube, a telescopic drive assembly with automatically adjustable insertion depth, and a sensing unit for monitoring sputum status. The dual-lumen suction tube includes a negative pressure channel 2 and a nebulization channel 3. One end of the negative pressure channel 2 is connected to the negative pressure generating module, and the other end of the negative pressure channel 2 is equipped with multiple negative pressure suction ports. One end of the nebulization channel 3 is connected to a gas-liquid mixing chamber 4, which is installed inside the housing 1. The control module is electrically connected to the sensing unit, the telescopic drive assembly, and the negative pressure generating module of the suction execution module. The control module dynamically adjusts the negative pressure intensity of the negative pressure generating module and the movement path of the dual-lumen suction tube based on the sputum status data fed back by the sensing unit.

[0040] The negative pressure generating module includes a first negative pressure chamber 5, a second negative pressure chamber 6, and a driving component 7. In this embodiment, the driving component 7 is a motor. The first negative pressure chamber 5, the second negative pressure chamber 6, and the driving component 7 are all located inside the housing 1. A first piston and a second piston are respectively installed in the first negative pressure chamber 5 and the second negative pressure chamber 6. A rotating shaft 8 is coaxially fixedly connected to the output shaft of the driving component 7. The end of the rotating shaft 8 away from the driving component 7 is rotatably engaged with the housing 1. Several eccentric wheels 9 are eccentrically fixedly connected to the rotating shaft 8. Each eccentric wheel 9 is slidably engaged with a connecting rod 10. The end of the connecting rod 10 away from the eccentric wheel 9 is respectively hinged to the first piston and the second piston. The driving component 7 is signal-connected to the control module.

[0041] The telescopic drive assembly includes a transmission rack 11 fixedly connected to the outer wall of the double-lumen suction tube. The transmission rack 11 is meshed with a gear 12. A central shaft 13 is coaxially fixedly connected to the gear 12. The central shaft 13 is rotatably engaged with the side wall of the housing 1. A synchronous belt 14 is sleeved on the central shaft 13. An electromagnetic clutch is installed on the output shaft of the drive component 7. The end of the synchronous belt 14 away from the central shaft 13 is sleeved on the electromagnetic clutch. The electromagnetic clutch is signal-connected to the control module. The electromagnetic clutch is controlled by the control module to open and close according to the data fed back by the sensing unit, thereby adjusting the insertion depth of the double-lumen suction tube.

[0042] The sensing unit includes a sputum viscosity sensor, an airway pressure sensor, and a blood oxygen saturation sensor. All three sensors are connected to the control module. The sputum viscosity sensor is used to detect the viscosity of respiratory secretions in real time. It is embedded in the inner wall of the multi-point negative pressure suction port of the double-lumen suction tube. The detection end face of the sputum viscosity sensor is flush with the inner wall of the negative pressure channel 2. This flush design avoids sputum residue and adsorption obstruction caused by sensor protrusion, further improving the thoroughness of suctioning. The airway pressure sensor is used to monitor the real-time pressure in the airway during suctioning. It is installed on the outer wall of the double-lumen suction tube near the patient. The blood oxygen saturation sensor is used to monitor the patient's blood oxygen saturation in real time during suctioning. The detection probe of the blood oxygen saturation sensor is detachably fixed to the patient's fingertip or earlobe.

[0043] The end of the negative pressure channel 2 away from the multi-point negative pressure suction port is connected to the sputum collection container 15. The end of the negative pressure channel 2 away from the multi-point negative pressure suction port is connected to the sputum collection container 15. The sputum collection container 15 is detachably installed on the outer wall of the shell 1. A three-way pipe 16 is connected to the sputum collection container 15. The two ends of the three-way pipe 16 away from the sputum collection container 15 are respectively connected to the first negative pressure chamber 5 and the second negative pressure chamber 6.

[0044] It also includes an atomization adjustment component, which includes an adjustment valve. The adjustment valve is embedded in the connection between the gas-liquid mixing chamber 4 and the atomization channel 3. The adjustment valve is connected to the control module via a signal. The control module controls the opening and closing of the adjustment valve based on the real-time monitoring data of the airway pressure sensor.

[0045] The specific implementation process is as follows: Medical staff fix the detection probe of the blood oxygen saturation sensor to the patient's fingertip or earlobe to ensure stable transmission of the sensor signal to the control module. Based on the nebulization volume parameters in the initial suctioning protocol, the control module sends a control signal to the regulating valve of the nebulization adjustment component, adjusting the valve's opening and closing degree. This allows the gas-liquid mixture in the gas-liquid mixing chamber 4 to be delivered to the patient's end of the dual-lumen suction catheter via the nebulization channel 3 at a preset flow rate, precisely humidifying the patient's airway. Through the linkage between the control module and the regulating valve, precise control of the nebulization volume is achieved, avoiding the problems of insufficient humidification leading to dry, hardened sputum that is difficult to suction out, or excessive humidification causing choking in patients, as is common with traditional devices. Furthermore, personalized nebulization protocols based on the patient's age significantly improve humidification adaptability.

[0046] After medical staff confirm the start of suctioning, the control module sends a start signal to the electromagnetic clutch, causing the output shaft of the drive unit 7 (motor) to rotate the central shaft 13 via the synchronous belt 14. The gear 12 meshes with the transmission rack 11, driving the double-lumen suction catheter to be slowly inserted into the patient's airway along a preset path. During insertion, the airway pressure sensor near the outer wall of the double-lumen suction catheter near the patient monitors the airway pressure data in real time and feeds it back to the control module. The control module dynamically adjusts the on / off frequency of the electromagnetic clutch based on the pressure data, thereby fine-tuning the insertion speed of the double-lumen suction catheter. The linkage between the drive unit 7 and the electromagnetic clutch enables automatic adjustment of the suction catheter insertion depth, eliminating the need for manual pushing by medical staff, reducing operational difficulty. At the same time, the real-time adjustment of the insertion speed through airway pressure feedback effectively avoids frictional damage to the airway mucosa caused by excessively rapid or excessive insertion of the suction catheter, improving operational safety.

[0047] After the dual-lumen suction catheter is inserted to the preset depth, a disconnect signal is sent to the electromagnetic clutch. Then, the control module sends a signal to the drive unit 7, which drives the rotating shaft 8 to rotate. The eccentric wheel 9 on the rotating shaft 8, via the connecting rod 10, pulls the first and second pistons to reciprocate within the first negative pressure chamber 5 and the second negative pressure chamber 6, respectively, generating negative pressure suction. This suction is transmitted through the three-way tube 16 and the negative pressure channel 2 to the multi-point negative pressure suction port, achieving the adsorption of respiratory secretions. During suctioning, a sputum viscosity sensor embedded in the inner wall of the multi-point negative pressure suction port detects the sputum viscosity in real time and feeds it back to the control module. The control module dynamically adjusts the rotation speed of the drive unit 7 based on the sputum viscosity data, thereby adjusting the piston reciprocating frequency to achieve precise matching of negative pressure intensity. When the sputum viscosity is high, the rotation speed of the drive unit 7 is increased to increase the negative pressure intensity and ensure thorough suctioning; when the sputum viscosity is low, the rotation speed of the drive unit 7 is decreased to reduce the negative pressure intensity and avoid damage to the airway mucosa. It helps to overcome the shortcomings of traditional devices with fixed negative pressure levels, achieve dynamic adaptation between negative pressure intensity and sputum viscosity, and ensure stable negative pressure output through the coordinated work of dual negative pressure chambers, avoiding suction fluctuations caused by the operation of a single negative pressure chamber, and improving the stability of sputum suction effect.

[0048] Throughout the suctioning process, the blood oxygen saturation sensor monitors the patient's blood oxygen saturation data in real time, and transmits this data synchronously to the control module along with the data from the airway pressure sensor. The control module analyzes both sets of data in real time. When the airway pressure exceeds a preset pressure threshold (indicating potential airway mucosal damage) or the blood oxygen saturation falls below a preset blood oxygen saturation threshold (indicating potential hypoxia), it immediately issues a control signal: firstly, it reduces the rotation speed of the drive component 7 to decrease the negative pressure output intensity, preventing further damage or hypoxia. This multi-parameter synchronous monitoring during suctioning overcomes the limitations of traditional devices that only monitor negative pressure values. It can predict and mitigate safety risks such as airway damage and hypoxia in advance, significantly improving the safety of suctioning operations, and is especially suitable for vulnerable airway groups such as infants and the elderly.

[0049] When the sputum viscosity sensor detects a significant decrease in sputum adsorption or reaches the preset suctioning time, the control module controls the drive component 7 to reduce its speed until the negative pressure output stops; then the control module reverses the control to engage the electromagnetic clutch, driving the dual-lumen suction tube to be slowly pulled out; after the tube is pulled out, medical staff can view the relevant data of this suctioning (such as sputum viscosity, airway pressure, blood oxygen saturation change curve, etc.) through the control module.

[0050] After suctioning is completed, medical staff can directly disassemble the sputum collection container 15 for cleaning and replacement. The detachable installation design of the sputum collection container 15 is convenient and quick, avoiding the cleaning difficulties caused by the fixed sputum collection container 15 of traditional devices. After cleaning, the sputum collection container 15 can be reinstalled, and the patient can enter the preparation state for the next suctioning.

[0051] Example 2:

[0052] The difference from Embodiment 1 is that the inlet of the sputum collection container 15 is provided with a one-way valve. The valve disc of the one-way valve is fixedly connected to a pull rope, and the end of the pull rope away from the one-way valve is connected to the outer wall of the double-lumen suction tube. When the telescopic drive assembly drives the double-lumen suction tube to be inserted or pulled out, the axial movement of the double-lumen suction tube pulls the one-way valve to open or close through the pull rope. When suctioning, the double-lumen suction tube is inserted, the pull rope pulls the valve disc to open, and the inlet is open. After suctioning, the double-lumen suction tube is pulled out, the pull rope loosens, and the valve disc of the one-way valve closes.

[0053] The specific implementation process is as follows: After medical staff initiate the suctioning procedure, the control module controls the electromagnetic clutch to conduct, and the drive component 7 drives the double-lumen suction tube to be inserted into the patient's airway along the preset path through the cooperation of the synchronous belt 14, gear 12 and transmission rack 11. As the double-lumen suction tube is inserted axially, the pull rope is pulled synchronously. The pull rope overcomes the reset elasticity of the one-way valve and pulls the valve to open, so that the inlet of the sputum collection container 15 is smoothly connected, preparing for subsequent sputum absorption. This achieves synchronous linkage between the insertion of the suction tube and the opening of the inlet, eliminating the need for medical staff to manually open the sputum collection channel, simplifying the operation process. Especially in emergency suctioning scenarios, it can save operation time, improve treatment efficiency, and avoid the negative pressure leakage problem that may occur when manually opening the channel.

[0054] After the dual-lumen suction tube is inserted to the preset depth, the drive unit 7 drives the rotating shaft 8 and the eccentric wheel 9 to rotate. Through the connecting rod 10, the first and second pistons reciprocate to generate negative pressure suction. The sputum enters the sputum collection tank 15 through the multi-point negative pressure suction port and the negative pressure channel 2. During this stage, the dual-lumen suction tube maintains a stable depth, the pull rope is always taut, and the one-way valve remains fully open to ensure that the sputum adsorption channel is unobstructed. The sputum viscosity sensor detects the sputum viscosity in real time and feeds it back to the control module. The control module dynamically adjusts the rotation speed of the drive unit 7 to match the negative pressure intensity to ensure thorough sputum suction.

[0055] When the amount of sputum absorbed decreases significantly or reaches the preset time, the control module controls the electromagnetic clutch to disengage and reverse the conduction, driving the double-lumen suction tube to be slowly pulled out. As the double-lumen suction tube is pulled out axially, the pull rope gradually loosens, and the one-way valve gradually closes under its own restoring elastic force until the double-lumen suction tube is completely pulled out, at which point the valve completely seals the inlet of the sputum collection container 15. This achieves the simultaneous completion of the suction tube removal and the sealing of the inlet, effectively preventing the sputum in the sputum collection container 15 from flowing back due to the disappearance of negative pressure. It also prevents the spread of odor caused by the sputum in the sputum collection container 15 being left open for a long time, solving the disinfection and isolation hazards caused by the open placement of the sputum collection container 15 in traditional devices. It is especially suitable for patient scenarios where the suction frequency is low and the sputum collection container 15 needs to be placed for a long time.

[0056] Example 3:

[0057] The difference from Embodiment 2 is that the housing 1 is also equipped with a pipeline self-cleaning module. The pipeline self-cleaning module includes a cleaning fluid storage tank and a high-pressure nozzle. The high-pressure nozzle is installed at the connection between the negative pressure channel 2 and the first negative pressure chamber 5. The high-pressure nozzle is connected to a pipeline. The end of the pipeline away from the high-pressure nozzle is connected to the cleaning fluid storage tank. A solenoid valve is installed on the pipeline. The solenoid valve is connected to the control module. When the electromagnetic clutch is disengaged and the dual-chamber suction tube stops moving, the control module simultaneously opens the solenoid valve, and the high-pressure nozzle sprays cleaning fluid into the negative pressure channel 2.

[0058] The specific implementation process is as follows: When suctioning is completed (the amount of sputum absorbed is significantly reduced or the preset time is reached), the control module first sends a disconnect signal to the electromagnetic clutch, and the dual-lumen suction tube stops moving and begins to be slowly pulled out. At the same time, the control module sends an open signal to the solenoid valve. After the solenoid valve is turned on, the cleaning fluid in the cleaning fluid storage tank is transported to the high-pressure nozzle through the pipeline under high pressure. The high-pressure nozzle accurately sprays the cleaning fluid into the negative pressure channel 2, thoroughly rinsing the inner wall of the negative pressure channel 2 and the sputum remaining at the multiple negative pressure suction ports. By using the on / off state of the electromagnetic clutch as the trigger signal for cleaning start, seamless synchronization between suctioning stop and cleaning start is achieved, eliminating the need for additional medical staff operations and greatly simplifying the process. Compared with the traditional method of manually disassembling the pipeline for cleaning after suctioning, this design avoids the tediousness and time-consuming nature of manual operation. At the same time, the precise spray of the high-pressure nozzle can cover the dead corners of the channel that are difficult to reach by manual cleaning, solving the risk of cross-infection caused by residual sputum in the pipeline and improving the hygiene safety and ease of operation of the device.

[0059] After the cleaning process continues for the preset duration (set according to the channel volume and cleaning fluid flow rate), the control module closes the solenoid valve, and the high-pressure nozzle stops spraying. At this time, the dual-lumen suction tube is completely removed, the pull rope loosens, the one-way valve closes, and the cleaning fluid carrying residual sputum flows into the sputum collection container 15. Medical staff only need to disassemble the sputum collection container 15 to simultaneously clean up the sputum and cleaning waste fluid, eliminating the need to separately handle the pipeline cleaning waste fluid, further simplifying the cleaning process. This centralized collection of cleaning waste fluid and sputum avoids internal contamination caused by turbulent cleaning fluid flow, while reducing the cleaning steps for medical staff and lowering their operational burden. Compared to traditional devices that require separate cleaning of the pipeline and sputum collection container 15, this linked collection method significantly improves cleaning efficiency and avoids the risk of secondary contamination.

[0060] After cleaning, reinstall the sputum collection container 15, reset the one-way valve and pull rope connection, and replenish the cleaning fluid in the cleaning fluid storage tank. The device can then enter the preparation state for the next suctioning, ensuring the reliability of continuous use of the device.

[0061] Example 4:

[0062] The difference from Embodiment 3 is that the control module is connected to a storage unit and an early warning unit. The storage unit is used to store airway parameters, sputum viscosity and negative pressure intensity matching thresholds for patients of different ages. Based on the airway pressure and blood oxygen saturation data fed back by the sensor unit, the control module triggers the early warning unit to issue an early warning reminder when the airway pressure exceeds the preset pressure threshold or the blood oxygen saturation is lower than the preset blood oxygen saturation threshold. Furthermore, the control module automatically generates a personalized sputum suction plan based on historical sputum suction data and the matching thresholds in the storage unit.

[0063] The warning unit includes an audible and visual warning device and a vibration warning device, both of which are installed on the top of the housing 1. When the airway pressure is abnormal, the audible and visual warning device emits a flashing red light and a continuous buzzer, while the vibration warning device simultaneously starts low-frequency vibration. When the blood oxygen saturation is lower than the preset blood oxygen saturation threshold, the audible and visual warning device emits a flashing yellow light and an intermittent buzzer, while the vibration warning device starts high-frequency vibration. At the same time, the control module automatically reduces the negative pressure intensity of the negative pressure generating module and controls the telescopic drive component to pull out part of the double-lumen suction tube until the airway pressure or blood oxygen saturation returns to a safe range.

[0064] The specific implementation process is as follows: After medical staff complete the initial debugging of the entire device (including patient basic information entry and blood oxygen saturation sensor installation) through the control module, the control module automatically retrieves the pre-stored airway parameters, sputum viscosity, and negative pressure intensity matching thresholds for patients of different ages in the storage unit. At the same time, the control module retrieves the patient's historical suctioning data (such as past sputum viscosity, airway pressure changes, and suitable negative pressure parameters) in the storage unit. Combined with the basic information entered this time, it automatically generates a more targeted personalized suctioning plan. The plan includes the suitable double-lumen suction catheter insertion depth range, negative pressure intensity gradients corresponding to different sputum viscosities, preset pressure thresholds, and preset blood oxygen saturation thresholds. Medical staff can fine-tune and confirm these based on clinical experience. This achieves linkage and adaptation between historical data and individual basic information, and the generated personalized plan is more in line with the patient's actual situation, breaking through the limitations of traditional devices that rely solely on general parameters. At the same time, the personalized setting of preset thresholds avoids the problem of insufficient adaptation of uniform thresholds to groups with different airway tolerance levels, improving the accuracy and safety of the plan.

[0065] After the dual-lumen suction catheter is inserted to the preset depth, the drive unit 7 drives the piston to reciprocate, generating negative pressure to adsorb sputum. The sputum viscosity sensor detects and feeds back data in real time, and the control module dynamically adjusts the rotation speed of the drive unit 7 according to the data to match the negative pressure intensity. Throughout the suctioning process, the airway pressure sensor and blood oxygen saturation sensor continuously monitor data and transmit it to the control module, which compares it with preset thresholds in real time.

[0066] (1) If the airway pressure exceeds the preset pressure threshold, the control module immediately triggers the warning unit action—the audible and visual warning device emits a flashing red light and a continuous buzzer, and the vibration warning device simultaneously starts low-frequency vibration, providing a triple reminder to medical staff through vision, hearing, and touch; at the same time, the control module automatically sends a signal to the drive component 7 to reduce the rotation speed, reduce the negative pressure intensity of the negative pressure generation module, and simultaneously controls the electromagnetic clutch to conduct in reverse, driving the telescopic drive component to slowly pull out the double-lumen suction tube until the airway pressure sensor feedback data returns to the safe range. The control module then controls the double-lumen suction tube to stop pulling out, maintains the current depth to continue suctioning, and records the abnormal occurrence and handling process parameters to the storage unit. This achieves seamless synchronization of abnormal detection, multi-mode warning, and active control. The triple warning can quickly attract the attention of medical staff and avoid the problem of a single warning being easily ignored; at the same time, the coordinated control of automatically reducing negative pressure and partial tube removal can quickly relieve airway pressure and avoid aggravating damage. Compared with the traditional device design that only provides warnings without active intervention, this significantly improves the timeliness and effectiveness of abnormal handling.

[0067] (2) If the blood oxygen saturation is detected to be lower than the preset blood oxygen saturation threshold: the control module immediately triggers the early warning unit action—the audible and visual early warning device emits a flashing yellow light and intermittent buzzing, and the vibration early warning device starts high-frequency vibration, clearly distinguishing it from the early warning mode of abnormal airway pressure; at the same time, the control module prioritizes reducing the speed of the drive component 7 to reduce the negative pressure intensity, controls the partial removal of the double-lumen suction tube, reduces the impact of suctioning on airway ventilation, until the blood oxygen saturation returns to a safe range, and then adjusts the negative pressure intensity according to the sputum viscosity data to continue suctioning, and the abnormal processing data is synchronously stored in the storage unit. By accurately distinguishing the abnormal type through different early warning modes, it is convenient for medical staff to quickly determine the cause of the fault and improve the targeted nature of intervention; the active control and early warning are carried out simultaneously, avoiding the continuous aggravation of hypoxia, which is especially suitable for patients with weak respiratory function and further ensures the safety of suctioning.

[0068] After cleaning, the control module closes the solenoid valve, the double-lumen suction catheter is completely removed, the pull rope loosens, and the one-way valve closes. The control module stores the entire suctioning process data (including abnormalities, handling, and suctioning effects) in the storage unit, providing data support for subsequent suctioning protocol optimization. Medical staff disassemble the sputum collection container 15 for cleaning, replenish cleaning fluid, reset the linkage structure, and the device enters the next preparation state. This achieves closed-loop storage of the entire suctioning process data, providing a data foundation for continuous optimization of personalized protocols and forming a virtuous cycle of data collection, protocol optimization, and precise execution. At the same time, the coordination between the early warning unit and processes such as cleaning and catheter removal ensures the safety and continuity of the entire process.

[0069] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An intelligent sputum suction device for respiratory medicine, comprising a housing (1), wherein the housing (1) is equipped with a sputum suction execution module for adsorbing respiratory secretions, a negative pressure generating module for generating negative pressure suction, and a control module for coordinating the operation of the various modules, characterized in that, The suction execution module includes a double-lumen suction tube, a telescopic drive assembly that can automatically adjust the insertion depth, and a sensing unit for monitoring the sputum status. The double-lumen suction tube includes a negative pressure channel (2) and an atomization channel (3). One end of the negative pressure channel (2) is connected to the negative pressure generating module, and the other end of the negative pressure channel (2) is equipped with a multi-point negative pressure suction port. One end of the atomization channel (3) is connected to a gas-liquid mixing chamber (4), which is installed inside the housing (1). The control module is electrically connected to the sensing unit, telescopic drive component, and negative pressure generating module of the suction execution module, respectively. The control module dynamically adjusts the negative pressure intensity of the negative pressure generating module and the movement path of the dual-lumen suction tube based on the sputum status data fed back by the sensing unit.

2. The intelligent sputum suction device for respiratory medicine according to claim 1, characterized in that, The negative pressure generating module includes a first negative pressure chamber (5), a second negative pressure chamber (6), and a driving component (7). The first negative pressure chamber (5), the second negative pressure chamber (6), and the driving component (7) are all located inside the housing (1). The first negative pressure chamber (5) and the second negative pressure chamber (6) are respectively equipped with a first piston and a second piston. A rotating shaft (8) is coaxially fixedly connected to the output shaft of the driving component (7). The end of the rotating shaft (8) away from the driving component (7) is rotatably engaged with the housing (1). Several eccentric wheels (9) are eccentrically fixedly connected to the rotating shaft (8). Each eccentric wheel (9) is slidably engaged with a connecting rod (10). The end of the connecting rod (10) away from the eccentric wheel (9) is hinged to the first piston and the second piston respectively. The driving component (7) and the control module are signal connected.

3. The intelligent sputum suction device for respiratory medicine according to claim 2, characterized in that, The telescopic drive assembly includes a transmission rack (11) fixedly connected to the outer wall of the double-lumen suction tube. The transmission rack (11) meshes with a gear (12). A central shaft (13) is coaxially fixedly connected to the gear (12). The central shaft (13) rotates with the side wall of the housing (1). A synchronous belt (14) is sleeved on the central shaft (13). An electromagnetic clutch is installed on the output shaft of the drive component (7). The end of the synchronous belt (14) away from the central shaft (13) is sleeved on the electromagnetic clutch. The electromagnetic clutch is signal-connected to the control module. The electromagnetic clutch is controlled by the control module to open and close according to the data fed back by the sensing unit, thereby adjusting the insertion depth of the double-lumen suction tube.

4. The intelligent sputum suction device for respiratory medicine according to claim 3, characterized in that, The sensing unit includes a sputum viscosity sensor, an airway pressure sensor, and a blood oxygen saturation sensor. The sputum viscosity sensor, airway pressure sensor, and blood oxygen saturation sensor are all connected to the control module. The sputum viscosity sensor is used to detect the viscosity of respiratory secretions in real time. The sputum viscosity sensor is embedded in the inner wall of the multi-point negative pressure suction port of the double-lumen suction tube. The detection end face of the sputum viscosity sensor is flush with the inner wall of the negative pressure channel (2). The airway pressure sensor is used to monitor the real-time pressure in the airway during suctioning. The airway pressure sensor is installed on the outer wall of the double-lumen suction tube near the patient. The blood oxygen saturation sensor is used to monitor the patient's blood oxygen saturation in real time during suctioning. The detection probe of the blood oxygen saturation sensor can be detachably fixed to the patient's fingertip or earlobe.

5. The intelligent sputum suction device for respiratory medicine according to claim 4, characterized in that, The negative pressure channel (2) is connected to a sputum collection container (15) at one end away from the multi-point negative pressure suction port. The sputum collection container (15) is detachably installed on the outer wall of the shell (1). A three-way pipe (16) is connected to the sputum collection container (15). The two ends of the three-way pipe (16) away from the sputum collection container (15) are connected to the first negative pressure chamber (5) and the second negative pressure chamber (6) respectively.

6. The intelligent sputum suction device for respiratory medicine according to claim 5, characterized in that, It also includes an atomization adjustment component, which includes an adjustment valve. The adjustment valve is embedded in the connection between the gas-liquid mixing chamber (4) and the atomization channel (3). The adjustment valve is connected to the control module via a signal. The control module controls the opening and closing of the adjustment valve based on the real-time monitoring data of the airway pressure sensor.

7. The intelligent sputum suction device for respiratory medicine according to claim 6, characterized in that, The inlet of the sputum collection container (15) is equipped with a one-way valve. The valve disc of the one-way valve is fixedly connected to a pull rope. The end of the pull rope away from the one-way valve is connected to the outer wall of the double-lumen suction tube. When the telescopic drive assembly drives the double-lumen suction tube to be inserted or pulled out, the axial movement of the double-lumen suction tube pulls the one-way valve to open and close through the pull rope. When suctioning, the double-lumen suction tube is inserted, the pull rope pulls the valve disc to open, and the inlet is open. After suctioning, the double-lumen suction tube is pulled out, the pull rope is loosened, and the valve disc of the one-way valve closes.

8. The intelligent sputum suction device for respiratory medicine according to claim 7, characterized in that, The housing (1) is also equipped with a pipeline self-cleaning module, which includes a cleaning fluid storage tank and a high-pressure nozzle. The high-pressure nozzle is installed at the connection between the negative pressure channel (2) and the first negative pressure chamber (5). The high-pressure nozzle is connected to a pipeline. The end of the pipeline away from the high-pressure nozzle is connected to the cleaning fluid storage tank. The pipeline is equipped with a solenoid valve, which is connected to the control module signal. When the electromagnetic clutch is disengaged and the dual-chamber suction tube stops moving, the control module opens the solenoid valve synchronously, and the high-pressure nozzle sprays cleaning fluid into the negative pressure channel (2).

9. The intelligent sputum suction device for respiratory medicine according to claim 8, characterized in that, The control module is connected to a storage unit and an early warning unit. The storage unit is used to store airway parameters, sputum viscosity and negative pressure intensity matching thresholds for patients of different ages. Based on the airway pressure and blood oxygen saturation data fed back by the sensor unit, the control module triggers the early warning unit to issue an early warning reminder when the airway pressure exceeds the preset pressure threshold or the blood oxygen saturation is lower than the preset blood oxygen saturation threshold. Furthermore, the control module automatically generates a personalized suctioning plan based on historical suctioning data and matching thresholds in the storage unit.

10. The intelligent sputum suction device for respiratory medicine according to claim 9, characterized in that, The warning unit includes an audible and visual warning device and a vibration warning device. Both the audible and visual warning device and the vibration warning device are installed on the top of the housing (1). When the airway pressure is abnormal, the audible and visual warning device emits a red light flashing and a continuous buzzer, and the vibration warning device starts low-frequency vibration in sync. When the blood oxygen saturation is lower than the preset blood oxygen saturation threshold, the audible and visual warning device emits a yellow light flashing and an intermittent buzzer, and the vibration warning device starts high-frequency vibration. At the same time, the control module automatically reduces the negative pressure intensity of the negative pressure generating module and controls the telescopic drive component to pull out part of the double-lumen suction tube until the airway pressure or blood oxygen saturation returns to a safe range.

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