Closed sputum suction tube facilitating control of the flow of flushing

Abstract

The utility model discloses a closed sputum suction tube convenient to control and wash flow, including sputum suction tube subassembly, and sputum suction tube subassembly has the washing joint on, and the outer end of washing joint is detachably connected with the washing valve, be equipped with the switch mechanism of located washing joint front end on sputum suction tube subassembly, the washing valve includes the valve body, and the first pipeline has in the valve body, be equipped with the sensor on the valve body, and the detection end of sensor stretches into the first pipeline, the outward end of valve body is equipped with the connecting column, and the rotary connection has the rotary shaft on the connecting column, and the lower extreme of rotary shaft stretches into the first pipeline and is connected with the baffle, be equipped with the first reset piece between connecting column and rotary shaft, the top of rotary shaft is equipped with the paddle, the utility model discloses can effectively control and measure the flow of liquid, can prevent liquid from flowing into the respiratory tract of patient in the washing process simultaneously.

Description

Technical Field

[0001] This utility model relates to a closed suction tube that facilitates control of the flushing flow rate, belonging to the field of medical device technology. Background Technology

[0002] Closed-loop suctioning is a suctioning procedure performed without interrupting the ventilator and maintaining mechanical ventilation; the entire suctioning process is completed in a closed environment. Compared to open-loop suctioning, using a closed-loop suctioning catheter allows the patient to remain on the ventilator without interrupting oxygen supply, effectively maintaining oxygen saturation. For example, Chinese utility model patent CN216222468U discloses a closed-loop suctioning catheter assembly, specifically including a first connector, a second connector, a suctioning catheter, a flexible sealing sleeve, and a third connector. The third connector includes a mating interface for connecting to the second connector, a ventilator interface for connecting to the ventilator's oxygen supply tubing, and an airway interface for connecting to the tracheostomy cannula. The third connector also has an adjustment structure, which includes a cavity connected between the ventilator interface and the airway interface, a ring located in the cavity, a sealing sleeve fixed to the tube wall, and a push rod inserted into the sealing sleeve. One end of the push rod is connected to the ring, and the other end of the push rod has a handle. This method typically involves connecting normal saline directly to the flushing connector via an IV line when cleaning the suction catheter. This makes it difficult to control and measure the flushing volume, thus making it impossible to determine the viscosity of the sputum. At the same time, improper operation can easily cause the fluid to flow into the patient's airway, increasing the risk of aspiration. Utility Model Content

[0003] The purpose of this invention is to provide a closed suction catheter that facilitates control of the flushing flow rate. This invention can effectively control and measure the flow rate of the fluid, while preventing the fluid from flowing into the patient's airway during the flushing process.

[0004] The technical solution of this utility model is as follows: A closed suction catheter for easy control of flushing flow includes a suction catheter assembly with a flushing connector. The outer end of the flushing connector is detachably connected to a flushing valve. The suction catheter assembly is provided with a switching mechanism located at the front end of the flushing connector. The flushing valve includes a valve body with a first pipe inside, which communicates with the interior of the flushing connector. A sensor is provided on the valve body, with the detection end of the sensor extending into the first pipe. A connecting post is provided at the outer end of the valve body, and a rotating shaft is rotatably connected to the connecting post. The lower end of the rotating shaft extends into the first pipe and is connected to a baffle plate, which fits into the interior of the first pipe. A first reset element is provided between the connecting post and the rotating shaft. A lever is provided at the top end of the rotating shaft.

[0005] The aforementioned closed suction catheter for easy control of flushing flow includes a first connector with an endotracheal tube connector at its front end; an oxygen connector at the front side of the first connector; a humidification connector on the first connector opposite the oxygen connector; a flushing connector at the rear end of the first connector on the same side as the humidification connector; a second conduit inside the first connector, which is connected to the endotracheal tube connector, the oxygen connector, the humidification connector, and the flushing connector; a sheath at the rear end of the first connector, with a second connector at the other end of the sheath; a movable suction catheter inside the sheath, one end of which is connected to the second connector, and the other end of which is slidably connected to the second conduit and extends from the endotracheal tube connector; a negative pressure connector at the rear end of the second connector; and a switching mechanism on the first connector, located between the humidification connector and the flushing connector.

[0006] The aforementioned closed suction tube for easy control of flushing flow includes a switching mechanism comprising a connecting block disposed on a first connector, a sliding groove provided in the connecting block, a movable block slidably connected in the sliding groove, and two ends of the movable block extending outward from the two ends of the connecting block respectively; the upper and lower surfaces of the movable block are respectively provided with protruding rings; the movable block is provided with a groove located on the side of the protruding ring; the second tube is aligned with the protruding ring or the groove.

[0007] The aforementioned closed suction tube, which facilitates control of flushing flow, has a U-shaped frame at the outer end of the connecting block. Two arc grooves are symmetrically arranged on both sides of the U-shaped frame, and the arc grooves correspond to the convex ring and the groove, respectively. Arc blocks are symmetrically arranged on both sides of the connecting block, and the arc blocks are aligned with the second pipe in the vertical direction.

[0008] The aforementioned closed suction catheter, which facilitates control of the flushing flow, has a switch button on the second connector.

[0009] The aforementioned closed suction tube, which facilitates control of the flushing flow rate, has caps connected to the sides of both the humidification connector and the flushing connector.

[0010] The aforementioned closed suction tube, which facilitates control of the flushing flow, has sealing rings on both edges of the baffle plate.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] In this invention, when cleaning the mobile suction catheter after sputum suction treatment, the switching mechanism is closed to isolate the flushing connector from the endotracheal tube connector. The cap of the flushing connector is removed, the flushing valve is connected to the flushing connector, and the outer end of the first pipe inside the valve body is connected to the infusion set tubing. By manually rotating the lever, the lever rotates the baffle plate inside the first pipe, causing the flushing fluid to flow into the flushing connector through the gap between the baffle plate and the first pipe to clean the mobile suction catheter. The flushing waste fluid is then removed by connecting a negative pressure device via a negative pressure connector. A sensor monitors and measures the flushing fluid flow rate in real time. Medical staff can determine the viscosity of the sputum based on the flow rate data. If the sputum is viscous, the amount of flushing fluid needs to be increased. If the patient requires endotracheal humidification, the flushing valve can be connected to the humidification connector before humidification, thus accurately controlling the amount infused. Therefore, this invention effectively controls and measures the flow rate of fluids while preventing fluid from flowing into the patient's airway during flushing. It has the advantages of simple structure and ease of use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a structural diagram of the flushing valve;

[0015] Figure 3 This is a cross-sectional view of the flushing valve;

[0016] Figure 4 This is a structural schematic diagram of the first connector;

[0017] Figure 5 This is a cross-sectional view of the first connector.

[0018] The labels in the attached diagram are as follows: 1-Suction tube assembly, 2-Flushing connector, 3-Flushing valve, 4-Switch mechanism, 5-First connector, 6-Tracheal tube connector, 7-Oxygen connector, 8-Humidification connector, 9-Second conduit, 10-Sheath, 11-Second connector, 12-Moving suction tube, 13-Negative pressure connector, 14-Switch button, 15-Cap, 30-Valve body, 31-First conduit, 32-Sensor, 33-Connecting post, 34-Rotating shaft, 35-Blocking plate, 36-First reset component, 37-Paddle, 38-Sealing ring, 40-Connecting block, 41-Slide groove, 42-Moving block, 43-Protruding ring, 44-Groove, 45-U-shaped frame, 46-Arc groove, 47-Arc block. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0020] Example: A closed suction catheter with easily controllable flushing flow rate, configured as follows Figure 1-5 As shown, the device includes a suction catheter assembly 1, which has a flushing connector 2. A flushing valve 3 is detachably connected to the outer end of the flushing connector 2. The suction catheter assembly 1 is equipped with a switching mechanism 4 located at the front end of the flushing connector 2. The flushing valve 3 includes a valve body 30 made of transparent medical-grade ABS plastic for easy observation of the internal fluid state. The valve body 30 contains a first pipe 31, which communicates with the interior of the flushing connector 2. A sensor 32 is mounted on the valve body 30, with its detection end extending into the first pipe 31. In this embodiment, the sensor 32 is a turbine flow sensor of model LWGY-15, which provides accurate detection. The valve body 30 has a high accuracy and can monitor the flushing fluid flow rate in real time. A connecting post 33 is provided at the outward end of the valve body 30. A rotating shaft 34 is rotatably connected to the connecting post 33. The lower end of the rotating shaft 34 extends into the first pipe 31 and is connected to a baffle plate 35. The baffle plate 35 fits into the interior of the first pipe 31. A first reset member 36 is provided between the connecting post 33 and the rotating shaft 34. In this embodiment, the first reset member 36 is a spring-loaded spring. The inner end of the spring-loaded spring is connected to the rotating shaft 34, and the outer end of the spring-loaded spring is connected to the connecting post 33, allowing the baffle plate 35 to automatically reset and close the first pipe 31 when not in operation. A lever 37 is provided at the top of the rotating shaft 34. When cleaning the suction catheter assembly 1 after a patient undergoes suctioning treatment, the switch mechanism 4 is closed, the flushing valve 3 is connected to the flushing connector 2, and the outer end of the first pipe 31 inside the valve body 30 is connected to the infusion set tubing. By manually rotating the lever 37, the lever 37 rotates the baffle 35 inside the first pipe 31 via the rotating shaft 34, allowing the flushing fluid to flow into the suction catheter assembly 1 through the gap between the baffle 35 and the first pipe 31 for cleaning. The flushing waste fluid is then removed by connecting the suction catheter assembly 1 to a negative pressure device. The flushing fluid flow rate is monitored and measured in real time by the sensor 32. Medical staff can determine the viscosity of the sputum based on the flow rate data; if the sputum is viscous, the amount of flushing fluid needs to be increased.

[0021] Preferably, such as Figure 1 and Figure 4As shown, the suction catheter assembly 1 includes a first connector 5 made of high-strength medical nylon. The front end of the first connector 5 has an endotracheal tube connector 6, which connects to the outer end of the endotracheal tube on the patient. An oxygen connector 7 is located on the front side of the first connector 5, connecting to an external oxygen supply device to provide oxygen to the patient during suctioning. A humidification connector 8 is located opposite the oxygen connector 7 on the first connector 5. The humidification connector 8 continuously humidifies the airway during suctioning to maintain airway mucosal function. When humidifying the patient, a medical three-way valve is connected to the outside of the humidification connector 8. One port of the medical three-way valve is connected to a flushing valve 3, and the outer end of the flushing valve 3 is connected to the humidification tubing, allowing for precise control of the inflow. The remaining port of the medical three-way valve is connected to a drug delivery tubing for humidification of the patient. Simultaneously, medication is used as an adjunct therapy. The flushing connector 2 is located at the rear end of the first connector 5 and on the same side as the humidification connector 8. The first connector 5 has a second pipe 9, which is connected to the endotracheal tube connector 6, oxygen connector 7, humidification connector 8, and flushing connector 2. The rear end of the first connector 5 has a sheath 10, and the other end of the sheath 10 has a second connector 11. The sheath 10 has a movable suction tube 12, one end of which is connected to the second connector 11, and the other end of which is slidably connected to the second pipe 9 and extends out from the endotracheal tube connector 6. The rear end of the second connector 11 has a negative pressure connector 13, the outer end of which is connected to a negative pressure device to achieve negative pressure adsorption of the movable suction tube 12 and to aspirate flushing waste liquid. The switching mechanism 4 is located on the first connector 5 and between the humidification connector 8 and the flushing connector 2. The second connector 11 has a switch button 14, which controls the opening and closing of the negative pressure in the suction tube assembly 1.

[0022] Preferably, such as Figure 4 and Figure 5As shown, the switching mechanism 4 includes a connecting block 40 disposed on the first connector 5. The connecting block 40 has a sliding groove 41, and a movable block 42 is slidably connected within the sliding groove 41. Both ends of the movable block 42 extend outwards from both ends of the connecting block 40. The upper and lower surfaces of the movable block 42 are respectively provided with protruding rings 43. The movable block 42 has a groove 44 located on the side of the protruding rings 43. The second pipe 9 is aligned with either the protruding ring 43 or the groove 44. The outer end of the connecting block 40 is provided with a U-shaped frame 45. Two arc grooves 46 are symmetrically arranged on both sides of the U-shaped frame 45, corresponding to the protruding ring 43 and the groove 44 respectively. Arc blocks 47 are symmetrically arranged on both sides of the connecting block 40, and the arc blocks 47 are vertically aligned with the second pipe 9. By sliding the movable block 42, the protruding ring 43 or the groove 44 is aligned with the second pipe 9. When the protruding ring 43 is aligned with the second pipe 9, it blocks the flow of liquid; when the groove 44 is aligned with the second pipe 9, it allows the flow of liquid. This allows for the closure or connection between the flushing connector 2 and the endotracheal tube connector 6. When the sliding block 42 is moved, the arc block 47 is aligned with the arc groove 46 corresponding to the convex ring 43 or the arc groove 46 corresponding to the recess 44, so that medical personnel can clearly know whether the switch mechanism 4 is in the open or closed state.

[0023] Preferably, such as Figure 1 As shown, both the humidification connector 8 and the flushing connector 2 are connected to a cap 15 on their sides. By covering the cap 15, the humidification connector 8 and the flushing connector 2 are in a closed state when not in use.

[0024] Preferably, such as Figure 2 As shown, the two edges of the baffle plate 35 are respectively provided with sealing rings 38, which ensure that no liquid flows through when the baffle plate 35 is in the state of closing the first pipe 31.

[0025] Working principle:

[0026] During suctioning treatment, the endotracheal tube connector 6 of the first connector 5 is connected to the patient's endotracheal tube, the oxygen connector 7 is connected to the oxygen supply equipment, the humidification connector 8 is connected to the humidification device, and the negative pressure connector 13 of the second connector 11 is connected to the negative pressure equipment. The moving block 42 of the sliding switch mechanism 4 is moved so that the groove 44 is aligned with the second pipe 9. The switch button 14 is pressed to turn on the negative pressure. The suctioning tube 12 is inserted into the respiratory tract for suctioning treatment according to the suctioning procedure. At the same time, the humidification connector 8 humidifies the airway and the oxygen connector 7 supplies oxygen. After the treatment, the moving block 42 of the sliding switch mechanism 4 is moved so that the convex ring 43 is aligned with the second pipe 9 to block the passage. The flushing valve 3 is connected to the flushing connector 2. The first pipe 31 of the valve body 30 is connected to the infusion set. The lever 37 is rotated to drive the baffle plate 35 to rotate, so that the flushing fluid flows into the suction tube assembly 1 through the gap for flushing. At the same time, the negative pressure equipment sucks away the waste liquid. The sensor 32 monitors the flushing flow in real time so that medical staff can judge the viscosity of the sputum.

Claims

1. A closed suction catheter for easy control of flushing flow, characterized in that: The device includes a suction catheter assembly (1), which has a flushing connector (2) and a flushing valve (3) detachably connected to the outer end of the flushing connector (2); the suction catheter assembly (1) is provided with a switching mechanism (4) located at the front end of the flushing connector (2); the flushing valve (3) includes a valve body (30), which has a first pipe (31) inside the valve body (30) and is connected to the inside of the flushing connector (2); the valve body (30) is provided with a sensor (32), which (32) is connected to the flushing connector (2) inside the valve body (30) and has a sensor (32) on it. The detection end of the valve body (30) extends into the first pipe (31); the outer end of the valve body (30) is provided with a connecting column (33), and a rotating shaft (34) is rotatably connected to the connecting column (33). The lower end of the rotating shaft (34) extends into the first pipe (31) and is connected with a baffle plate (35). The baffle plate (35) fits into the interior of the first pipe (31); a first reset member (36) is provided between the connecting column (33) and the rotating shaft (34); a paddle (37) is provided at the top of the rotating shaft (34).

2. The closed suction catheter for easy control of flushing flow rate according to claim 1, characterized in that: The suction catheter assembly (1) includes a first connector (5), the front end of which has an endotracheal tube connector (6); an oxygen connector (7) is provided on the front side of the first connector (5); a humidification connector (8) is provided on the first connector (5) on the opposite side of the oxygen connector (7); the flushing connector (2) is located at the rear end of the first connector (5) and is on the same side as the humidification connector (8); a second pipe (9) is provided inside the first connector (5), and the second pipe (9) is connected to the endotracheal tube connector (6), the oxygen connector (7), the humidification connector (8), and the flushing connector (6), respectively. 2) Connected; the rear end of the first connector (5) is provided with a sheath (10), and the other end of the sheath (10) is provided with a second connector (11); a movable suction tube (12) is provided inside the sheath (10), one end of the movable suction tube (12) is connected to the second connector (11), and the other end of the movable suction tube (12) is slidably connected to the second pipe (9) and extends out from the endotracheal tube connector (6); the rear end of the second connector (11) is provided with a negative pressure connector (13); the switching mechanism (4) is provided on the first connector (5) and located between the humidification connector (8) and the flushing connector (2).

3. The closed suction catheter for easy control of flushing flow rate according to claim 2, characterized in that: The switching mechanism (4) includes a connecting block (40) disposed on the first connector (5), a sliding groove (41) is provided in the connecting block (40), a moving block (42) is slidably connected in the sliding groove (41), and the two ends of the moving block (42) extend outward from the two ends of the connecting block (40); the upper and lower surfaces of the moving block (42) are respectively provided with protruding rings (43); the moving block (42) is provided with a groove (44) located on the side of the protruding ring (43); the second pipe (9) is aligned with the protruding ring (43) or the groove (44).

4. The closed suction catheter for easy control of flushing flow rate according to claim 3, characterized in that: The outer end of the connecting block (40) is provided with a U-shaped frame (45), and two arc grooves (46) are symmetrically arranged on both sides of the U-shaped frame (45). The arc grooves (46) correspond to the convex ring (43) and the groove (44) respectively. Arc blocks (47) are symmetrically arranged on both sides of the connecting block (40), and the arc blocks (47) are aligned with the second pipe (9) in the vertical direction.

5. The closed suction catheter for easy control of flushing flow rate according to claim 2, characterized in that: The second connector (11) is provided with a switch button (14).

6. The closed suction catheter for easy control of flushing flow rate according to claim 2, characterized in that: Both the humidification connector (8) and the flushing connector (2) are connected to a cap (15) on their sides.

7. The closed suction catheter for easy control of flushing flow rate according to claim 1, characterized in that: The baffle plate (35) has sealing rings (38) on both sides of its edges.

Images