Automatic pressure regulating negative pressure suction device with automatic humidification function

Abstract

The application discloses an automatic pressure regulating negative pressure suction device with automatic humidification function, which comprises a tracheal catheter, a closed sputum suction tube connected to the tail end of the tracheal catheter, a humidification tube connected to a humidification tube port on the closed sputum suction tube, an infusion device connected to the upper end of the humidification tube, sterile humidification liquid connected to the infusion device, a quantitative injection device additionally arranged outside a Murphy dropper of the infusion device, and a pressure pump provided with a volume sensor and a closed air bag wrapping the Murphy dropper, wherein the tail end of the closed sputum suction tube is connected to a disposable negative pressure suction liquid storage bottle through a suction device leather strap, and another connecting port of the negative pressure suction bottle is connected to a negative pressure suction pressure regulating table. According to the application, pressure modules are selected according to different suction liquids (sputum, bile, intestinal fluid, cerebrospinal fluid, etc.), a standard negative pressure value range is adjusted by one key, and the application is convenient to use. In addition, the automatic humidification can be performed on thick sputum for the sputum suction operation, the sputum is made to be thin, and the suction is facilitated.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an automatic pressure regulating negative pressure suction device with automatic humidification function. Background Technology

[0002] A negative pressure suction device is a tool that creates a negative pressure state at its suction head, forcing material outside the suction head towards it, thus achieving the "suction" effect. Negative pressure suction devices are commonly used in endotracheal suctioning, a primary and crucial measure in the airway management of mechanically ventilated patients. Its purpose is to maintain airway patency, prevent partial or complete airway obstruction, and play a vital role in controlling respiratory infections. Negative pressure is the driving force for suctioning; different negative pressures have varying effects on the hemodynamics of mechanically ventilated patients. Furthermore, the duration of suctioning, the volume of sputum, and the viscosity of the sputum all influence the pressure. Setting a safe and effective negative pressure for suctioning based on the patient's specific condition not only achieves better suction results and maintains the effectiveness of mechanical ventilation but also reduces various complications.

[0003] With the increasing popularity of negative pressure suction devices, in addition to routine sputum suction, they can also be used for suctioning blood, bile, etc. for patients during and after surgery. Postoperative suction can also be used to maintain unobstructed drainage and promote surgical wound healing. However, the negative pressure suction devices currently used in clinical practice cannot automatically adjust the pressure value for different operations and still require manual adjustment, which is inconvenient. In addition, it is difficult to humidify excessively thick sputum that is difficult to suction, resulting in poor suction effect. Therefore, we propose a more practical automatic pressure-adjusting negative pressure suction device with automatic humidification function. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic pressure-adjusting negative pressure suction device with automatic humidification function, which solves the problem that the negative pressure suction devices currently used in clinical practice cannot automatically adjust the pressure value for different operations and still require manual adjustment, making the overall operation inconvenient. In addition, it is difficult to humidify excessively thick sputum that is difficult to suction, resulting in poor suction effect.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic pressure regulating negative pressure suction device with automatic humidification function, comprising:

[0006] The endotracheal tube has a closed suction tube connected to its tail end. A humidification tube is connected to the upper left end of the closed suction tube. A humidification tube is installed at the upper end of the humidification tube. A suction tube is attached to the tail end of the closed suction tube.

[0007] A Murphy drip chamber is installed at the upper end of the humidification tube. A metering syringe is installed on the upper outer side of the Murphy drip chamber. The top of the Murphy drip chamber is connected to an infusion tube, and the top of the infusion tube is connected to an infusion bag.

[0008] A collection bottle is connected below the suction tube, and a negative pressure tube is connected to the upper right corner of the collection bottle. Both the negative pressure tube and the suction tube are connected to the inside of the collection bottle.

[0009] Connecting pipe one is connected to the right end of the negative pressure pipe via a check valve. A pressure regulating cylinder is installed at the right end of connecting pipe one. A pressure regulating plug is installed inside the pressure regulating cylinder. Connecting pipe two is connected to the right side of the pressure regulating cylinder. A control panel is installed above the pressure regulating cylinder. The control panel is electrically connected to the quantitative injection device.

[0010] Preferably, the closed suction catheter further includes:

[0011] The ventilator connection tube is located below the left end of the closed suction tube;

[0012] A concentration sensor and a closed suction catheter control valve are installed at the tail end of the closed suction catheter. The concentration sensor is located at the left end of the closed suction catheter control valve, and the concentration sensor is electrically connected to the control panel.

[0013] Preferably, the quantitative injection device further includes:

[0014] A chute is provided on the front side of the metering injector;

[0015] A capacity sensor is slidably mounted on the inside of the groove;

[0016] A miniature air pump is fixed to the outer side of the metering injector;

[0017] An air inlet pipe is installed at the connection between the metering injector and the micro air pump;

[0018] An air bladder is connected to the inner wall of the metering syringe and fits tightly against the outer surface of the Murphy dropper. The micro air pump is connected to the air bladder through the air inlet pipe.

[0019] Preferably, the pressure regulating cylinder further includes:

[0020] A pressure sensor is embedded in the inner top of the pressure regulating cylinder;

[0021] A threaded seat is installed at the middle of the lower surface of the pressure regulating cylinder.

[0022] Preferably, the pressure regulating plug further includes:

[0023] A servo motor is installed inside the pressure regulating plug;

[0024] A screw is connected to the lower end of the servo motor and is threadedly connected to the threaded seat.

[0025] Preferably, the control panel further includes:

[0026] The display screen is embedded on the left side of the front side of the control panel;

[0027] A pressure adjustment button is mounted on the right side of the display screen;

[0028] A controller, which is mounted below the display screen;

[0029] A reset button is located on the right side of the controller;

[0030] The function selection key is located on the lower front side of the control panel;

[0031] The power switch is located in the middle of the function selection keys.

[0032] Preferably, the function selection key further includes:

[0033] An organization key is installed on the left side of the switch key;

[0034] The bile kinase is located at the upper left corner of the switch.

[0035] The sputum control button is installed directly above the on / off switch.

[0036] The blood key is installed in the upper right corner of the switch;

[0037] The humidification key is located on the right side of the switch.

[0038] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0039] This invention has a simple structure and is easy to use. It analyzes the concentration of different effusions through a concentration sensor, and then the pressure regulating cylinder automatically adjusts the pressure. It adjusts the negative pressure according to the suction of different effusions such as tissue, bile, blood and sputum, thereby reducing harm to patients and improving safety. At the same time, it can also detect the sputum concentration and automatically add humidifying fluid when the sputum is too thick to be suctioned, so as to make the sputum thinner and easier to suction.

[0040] The volume sensor can detect the volume of humidifying liquid inside the Murphy dropper. The height of the volume sensor can be adjusted to set the amount of humidifying liquid to be added, such as 5ml or 10ml. Given a fixed volume of the Murphy dropper, the appropriate amount of humidifying liquid is automatically injected, making it easy to control the amount of humidifying liquid injected. The micro air pump can inflate the air bladder through the air inlet tube, causing the air bladder to expand and squeeze the Murphy dropper to complete the humidifying liquid injection operation.

[0041] The pressure sensor can detect the pressure above the pressure regulating cylinder. During the rotation of the screw and the threaded seat, the pressure regulating plug can be moved up and down to adjust the pressure in the space above the pressure regulating cylinder. The screw surface has finely engraved threads, which helps to improve the precision of pressure regulation. The function selection key can access the internal data of the controller to achieve one-click adjustment to the appropriate pressure value for the liquid being drawn, making it more convenient to use. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the structure of the present invention;

[0043] Figure 2 This is a schematic diagram of the cross-sectional structure of the Murphy dropper and quantitative injector of the present invention.

[0044] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the pressure regulating cylinder of the present invention;

[0045] Figure 4 This is a front view structural diagram of the control panel of the present invention;

[0046] Figure 5 This is a schematic diagram of the function selection key framework of the present invention;

[0047] Figure 6 This is a flowchart of the workflow of the present invention.

[0048] In the diagram: 1. Endotracheal tube; 2. Closed suction catheter; 201. Ventilator connection tube; 202. Concentration sensor; 203. Closed suction catheter control valve; 3. Humidification tube; 4. Murphy drip chamber; 5. Dosing syringe; 6. Infusion tube; 7. Infusion bag; 8. Suction tube; 10. Collection bottle; 11. Negative pressure tube; 12. Connection tube one; 13. Pressure regulator; 14. Pressure regulator plug; 15. Connection tube two; 16. Control panel; 17. Humidification tube ; 18. Slide rail; 19. Volume sensor; 20. Miniature air pump; 21. Air inlet pipe; 22. Airbag; 23. Air pressure sensor; 24. Threaded seat; 25. Servo motor; 26. Screw; 27. Display screen; 28. Pressure adjustment key; 29. ​​Controller; 30. Reset key; 31. Function selection key; 311. Tissue key; 312. Bile key; 313. Sputum key; 314. Blood key; 315. Humidification key; 32. On / off switch. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] Please see Figure 1-6 An automatic pressure regulating negative pressure suction device with automatic humidification function includes:

[0051] Endotracheal tube 1, the tail end of endotracheal tube 1 is connected to a closed suction tube 2, the upper left end of the closed suction tube 2 is connected to a humidification tube 17, the upper end of the humidification tube 17 is equipped with a humidification tube 3, and the tail end of the closed suction tube 2 is fitted with a suction tube 8.

[0052] Murphy dropper 4 is installed at the upper end of humidification tube 3. A quantitative injector 5 is installed on the upper outer side of Murphy dropper 4. An infusion tube 6 is connected to the top of Murphy dropper 4. An infusion bag 7 is connected to the top of infusion tube 6.

[0053] The collection bottle 10 is connected to the lower part of the suction tube 8. The upper right corner of the collection bottle 10 is connected to the negative pressure tube 11. Both the negative pressure tube 11 and the suction tube 8 are connected to the inside of the collection bottle 10.

[0054] Connecting pipe 12 is connected to the right end of negative pressure pipe 11 via a check valve. A pressure regulating cylinder 13 is installed at the right end of connecting pipe 12, and a pressure regulating plug 14 is installed inside the pressure regulating cylinder 13. Connecting pipe 15 is connected to the right side of the pressure regulating cylinder 13. A control panel 16 is installed above the pressure regulating cylinder 13, and the control panel 16 is electrically connected to the quantitative injection device 5.

[0055] The closed suction catheter 2 also includes:

[0056] The ventilator connection tube 201 is located below the left end of the closed suction tube 2;

[0057] A concentration sensor 202 and a closed suction tube control valve 203 are installed at the tail end of the closed suction tube 2. The concentration sensor 202 is located at the left end of the closed suction tube control valve 203, and the concentration sensor 202 is electrically connected to the control panel 16. The concentration sensor 202 analyzes the concentration of different effusions, and then the pressure regulating cylinder 13 automatically adjusts the pressure. The pressure is adjusted to the most suitable negative pressure according to the suction of different effusions such as tissue, bile, blood and sputum, which helps to reduce harm to the patient and makes the use safer.

[0058] The closed-loop suction catheter control valve 203 is installed at the right end of the concentration sensor 202.

[0059] The quantitative injection device 5 also includes:

[0060] The chute 18 is located on the front side of the metering injector 5;

[0061] Capacity sensor 19 is slidably mounted on the inside of slide groove 18;

[0062] A miniature air pump 20 is fixed to the outer side of the metering injector 5;

[0063] Air inlet pipe 21 is installed at the connection between metering injector 5 and micro air pump 20;

[0064] The air bladder 22 is connected to the inner wall of the metering injector 5 and fits tightly against the outer surface of the Murphy dropper 4. A micro air pump 20 is connected to the air bladder 22 via an air inlet pipe 21. The micro air pump 20 inflates the air bladder 22 through the air inlet pipe 21, causing the air bladder 22 to expand and compress the Murphy dropper 4, thus completing the dispensing of the humidifying fluid.

[0065] The pressure regulating cylinder 13 also includes:

[0066] The pressure sensor 23 is embedded in the inner top of the pressure regulating cylinder 13. The pressure sensor 23 can detect the pressure above the pressure regulating cylinder 13.

[0067] The threaded seat 24 is installed at the middle of the lower surface of the pressure regulating cylinder 13.

[0068] The pressure regulating plug 14 also includes:

[0069] Servo motor 25 is installed inside pressure regulating plug 14;

[0070] The screw 26 is connected to the lower end of the servo motor 25 and is threadedly connected to the threaded seat 24. During the rotation of the screw 26 and the threaded seat 24, the screw 26 can drive the pressure regulating plug 14 to move up and down, so as to adjust the pressure in the space above the pressure regulating cylinder 13. In addition, the screw 26 has finely engraved threads, which helps to improve the precision of pressure adjustment.

[0071] Control Panel 16 also includes:

[0072] The display screen 27 is embedded on the left side of the front side of the control panel 16;

[0073] Pressure adjustment key 28 is mounted on the right side of display screen 27;

[0074] Controller 29 is mounted below display screen 27;

[0075] Reset button 30 is installed on the right side of controller 29;

[0076] The function selection key 31 is installed on the lower front side of the control panel 16. Setting the function selection key 31 can access the internal data of the controller 29 and achieve one-click adjustment to the appropriate pressure value for the suction liquid, making it more convenient to use.

[0077] The power switch 32 is located in the middle of the function selection key 31.

[0078] Function selection key 31 also includes:

[0079] Organization key 311 is installed on the left side of the switch key 32;

[0080] The bile switch 312 is located at the upper left corner of the switch 32;

[0081] The sputum control button 313 is installed directly above the power switch 32;

[0082] Blood key 314 is installed in the upper right corner of the power switch 32;

[0083] The humidification key 315 is located on the right side of the switch 32.

[0084] Working principle: For this type of automatic pressure regulating negative pressure suction device with automatic humidification function, first connect the endotracheal tube 1 to the closed suction tube 2. The accessories assembled at the front end of the closed suction tube control valve 203 are all disposable. First, place the endotracheal tube 1 at the position where suction is needed, so that the ventilator connection tube 201 is connected to the ventilator. The quantitative injector 5 is sleeved on the outside of the Murphy drip 4, so that the Murphy drip 4 is guided into the quantitative injector 5 through the slide 18. Under normal power supply, the pressure sensor 23 can detect the pressure of the space above the pressure regulating cylinder 13 and transmit the data to the controller 29. The controller 29 transmits the data to the display screen 27 for display. Then, press the power switch 32 on the control panel 16 to start the entire device. The control panel 16 has a built-in battery, which can meet the automatic pressure regulation operation for a short time when the power is off. Press any tissue key 311, bile key 312, sputum key 313, blood key 314, or humidification key 315 in the function selection key 31 to select the suction function.

[0085] Assuming sputum suction is required, pressing the sputum button 313 activates the internal data of the controller 29, adjusting the pressure above the pressure regulating cylinder 13 to the maximum pressure required for sputum suction. The controller 29 then starts the servo motor 25, which drives the screw 26 to rotate. The screw 26 and the threaded seat 24 engage in a threaded action, causing the screw 26 to rotate downwards or upwards, moving the pressure regulating plug 14 up and down to adjust the internal pressure of the pressure regulating cylinder 13 to the set value. Then, by pressing the pressure adjustment button 28, fine adjustments can be made within the sputum suction pressure range, achieving electric adjustment. In the event of a power outage, a negative pressure center gauge can be connected externally via the connecting pipe 2 15 for manual adjustment.

[0086] When the concentration sensor 202 detects that the sputum concentration is too thick, the automatic humidification function is activated. If the automatic humidification function is not sensitive, manual humidification can be performed by pressing the humidification button 315. The controller 29 controls the micro air pump 20 to start. The micro air pump 20 delivers gas into the air bag 22 through the air inlet pipe 21, causing the air bag 22 to inflate. The air bag 22 compresses the Murphy drip tube 4, squeezing the humidification liquid inside the Murphy drip tube 4. The humidification liquid flows along the humidification tube 3 and the humidification tube 17 into the closed suction tube 2, diluting the sputum so that it can be suctioned. At the same time, the volume sensor 19 can detect the amount of humidification liquid inside the Murphy drip tube 4. Initially, the control can be set by adjusting the installation height of the volume sensor 19 relative to the slide 18. The injection volume is set to a fixed value (5ml or 10ml). After injection, the air bag 22 retracts to its original shape, and at the same time, the infusion bag 7 replenishes fluid into the Murphy drip tube 4 through the injection tube 6. When the pressure regulating cylinder 13 reaches the appropriate suction pressure, the pressure regulating cylinder 13, through the negative pressure tube 11 and the connecting tube 12, puts the collection bottle 10 in the negative pressure state. The closed suction tube control valve 203 is opened, so that the end of the endotracheal tube 1 has negative pressure suction. The sputum is sucked into the endotracheal tube 1, and enters the collection bottle 10 through the closed suction tube 2 and the suction tube 8. After suction is completed, the reset button 30 is pressed to reset the data of each link to the original position. This completes the use of the automatic pressure regulating negative pressure suction device with automatic humidification function.

[0087] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic pressure regulating negative pressure suction device with automatic humidification function, characterized in that, The utility model relates to a closed suction catheter and its control system, including: Tracheal catheter (1), the tail end of tracheal catheter (1) is connected with closed suction catheter (2), the left end of closed suction catheter (2) is connected with humidification pipe (17) above, the upper end of humidification pipe (17) is installed with humidification pipe (3), the tail end of closed suction catheter (2) is sleeved with suction pipe (8); Murphy dropper (4) is installed to the upper end of humidification pipe (3), the outside of Murphy dropper (4) is installed with quantitative pusher (5) above, the top of Murphy dropper (4) is connected with filling pipe (6), the top of filling pipe (6) is connected with infusion bag (7); Collecting bottle (10) is connected below suction pipe (8), the right upper corner of collecting bottle (10) is connected with negative pressure pipe (11), and negative pressure pipe (11) and suction pipe (8) are all connected with the inside of collecting bottle (10) and are communicated, Connecting pipe one (12) is connected with the right end of negative pressure pipe (11) through check valve, the right end of connecting pipe one (12) is installed with pressure regulating cylinder (13), the inside of pressure regulating cylinder (13) is installed with pressure regulating plug (14), the right side of pressure regulating cylinder (13) is connected with connecting pipe two (15), the upper side of pressure regulating cylinder (13) is installed with control panel (16), control panel (16) is electrically connected with quantitative pusher (5), and closed suction catheter (2) further includes: Ventilator connecting pipe (201) is located below the left end of closed suction catheter (2); Concentration sensor (202) and closed suction catheter control valve (203) are installed at the tail end of closed suction catheter (2), and concentration sensor (202) is located at the left end of closed suction catheter control valve (203), and concentration sensor (202) and control panel (16) are electrically connected, and quantitative pusher (5) further includes: Chute (18) is arranged on the front side of quantitative pusher (5); Capacity sensor (19) is slidably installed on the inner side of chute (18); Miniature air pump (20) is fixed on the outer side of quantitative pusher (5); Air inlet pipe (21) is installed at the connection of quantitative pusher (5) and miniature air pump (20); Air bag (22) is connected to the inner wall of quantitative pusher (5) and closely adheres to the outer surface of Murphy dropper (4), and the miniature air pump (20) is connected to the air bag (22) through the air inlet pipe (21).

2. The automatic pressure regulating negative pressure suction device with an automatic humidification function according to claim 1, characterized by, The pressure regulating cylinder (13) further includes: Air pressure sensor (23) is embedded in the inner top of pressure regulating cylinder (13); Screw seat (24) is installed in the lower surface of pressure regulating cylinder (13) in the middle position.

3. The automatic pressure regulating negative pressure suction device with an automatic humidification function according to claim 2, characterized by, The pressure regulating plug (14) further includes: Servo motor (25) is installed in the inside of pressure regulating plug (14); Screw rod (26) is connected to the lower end of servo motor (25) and is threadedly connected with screw seat (24).

4. The automatic pressure regulating negative pressure suction device with an automatic humidification function according to claim 1, wherein The control panel (16) further includes: a display screen (27) inlaid in the left position of the front side of the control panel (16); a pressure regulating key (28) installed in the right side of the display screen (27); a controller (29) installed below the display screen (27); a reset key (30) installed in the right side of the controller (29); a function selection key (31) installed in the lower position of the front side of the control panel (16); an on-off key (32) installed in the middle position of the function selection key (31).

5. The automatic pressure regulating negative pressure suction device with an automatic humidification function according to claim 4, characterized by, The function selection key (31) further comprises: a tissue key (311) installed in the left position of the on-off key (32); a bile key (312) installed in the upper left corner of the on-off key (32); a sputum key (313) installed in the upper position of the on-off key (32); a blood key (314) installed in the upper right corner of the on-off key (32); a humidification key (315) installed in the right position of the on-off key (32).

Images