Chest drainage device for cardiac surgery

Abstract

The invention belongs to the technical field of thoracic cavity drainage equipment, and particularly discloses a thoracic cavity drainage device for cardiac surgery, which comprises a flow dividing tee joint, a liquid dividing valve core, a water seal assembly, a drainage bottle and a power assembly, the flow dividing tee joint is provided with a cavity, and the flow dividing tee joint is provided with a liquid inlet interface, a first liquid outlet interface and a second liquid outlet interface which are respectively communicated with the cavity; the liquid inlet connector is used for being connected with a drainage tube; the liquid separation valve core is rotationally arranged in the cavity; the water seal assembly is connected with the liquid inlet connector and used for draining accumulated gas. The number of the drainage bottles is two, the two drainage bottles are connected with the first liquid outlet connector and the second liquid outlet connector in a one-to-one correspondence mode, and the drainage bottles are used for draining accumulated liquid. The power assembly is connected with the liquid distribution valve element and used for providing power for the liquid distribution valve element. The two drainage paths are established to cooperate with the two drainage bottles for drainage, the whole drainage process is not interrupted, uncomfortable symptoms of a patient caused by drainage interruption are effectively avoided, and the drainage treatment experience of the patient is effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of chest drainage equipment, and in particular relates to a chest drainage device for cardiac surgery. Background Art

[0002] After chest trauma, hemothorax, spontaneous pneumothorax, hemothorax, large amounts of pleural effusion or blood accumulation, and cardiothoracic surgery, patients need chest drainage, which is to quickly drain the blood, fluid and air accumulation in the chest cavity through a chest drainage catheter, reestablish the negative pressure in the chest cavity, maintain the normal position of the mediastinum, and promote lung expansion. The main operation of chest drainage is to disinfect the drainage site first, then perform local anesthesia. After the anesthesia is successful, the chest drainage device is inserted between the ribs to facilitate the discharge of gas or the collection of effusion in the chest cavity, so that the lung tissue can reopen and restore function.

[0003] During chest drainage, the volume of the container for collecting effusion is limited, so the container needs to be replaced as the effusion accumulates during continuous use. The chest drainage device of the prior art requires medical staff to interrupt the drainage process when replacing the container, and then manually close the drainage tube and replace the drainage container. When the effusion is being drained through the drainage tube, interrupting the drainage to replace the drainage bottle will cause the effusion under the drainage tube to spill and cause contamination. At the same time, interrupting the drainage process will cause the patient to have uncomfortable symptoms such as dyspnea, chest tightness, abdominal distension or shortness of breath. In addition, it is difficult for medical staff to complete the drainage bottle replacement operation conveniently and quickly with both hands, and it is also very easy for the drainage tube to be not tightly closed, causing air to enter the pleural cavity and cause pneumothorax.

[0004] For example, the Chinese invention patent with publication number CN105013028B proposes a closed chest drainage device, which realizes drainage through a drainage bottle with a hollow structure, and a drainage tube interface is provided on the top of the drainage bottle. In use, as the effusion accumulates, when the effusion fills the drainage bottle, the device needs to be replaced, and then the medical staff needs to manually close the drainage tube and then replace the device. Conventional closed drainage tubes use a folding drainage tube. During this process, medical staff need to hold the drainage tube to close and replace the device. During this process, medical staff are very likely to have problems with the drainage tube not being tightly closed, which will cause air to enter the pleural cavity and cause pneumothorax. At this time, a staff member cannot replace the drainage device while closing the drainage tube, and at least two medical staff are required to cooperate to complete it, which is extremely inconvenient. What's more, if the drainage container is replaced while the drainage tube is being used to drain the effusion, the effusion remaining in the drainage tube is prone to spillage, which will cause pollution in the ward. Another example is the Chinese invention patent with publication number CN104288849B, which proposes a chest drainage device, which achieves drainage through a drainage chamber and a saline chamber, and has a drainage tube interface at the top of the drainage chamber. It also has the above-mentioned technical defects. When the drainage device needs to be replaced due to accumulation of effusion, the drainage tube is not tightly sealed during the replacement of the drainage bottle, the effusion in the drainage tube is easy to spill and cause contamination, and it is difficult for medical staff to complete the operation conveniently and quickly. Summary of the invention

[0005] In view of the above-mentioned problems, the purpose of the present invention is to provide a chest drainage device for cardiac surgery, which can conveniently and quickly replace the drainage container, and effectively avoid the problem of loose sealing of the drainage tube and easy spillage of the accumulated fluid in the drainage tube.

[0006] The technical solution of the present invention is: a chest drainage device for cardiac surgery, comprising:

[0007] A split tee having a cavity, the split tee is provided with a liquid inlet interface, a first liquid outlet interface, and a second liquid outlet interface respectively connected to the cavity, and the liquid inlet interface is used to be connected to the drainage tube;

[0008] The liquid-separating valve core is rotatably arranged in the cavity; when the liquid-separating valve core rotates to contact the first liquid outlet interface, the first liquid outlet interface is closed, and the liquid inlet interface, the cavity, and the second liquid outlet interface are connected; when the liquid-separating valve core rotates to contact the second liquid outlet interface, the second liquid outlet interface is closed, and the liquid inlet interface, the cavity, and the first liquid outlet interface are connected;

[0009] A water seal assembly connected to the liquid inlet interface and used for draining accumulated gas;

[0010] There are two drainage bottles, which are connected to the first liquid outlet interface and the second liquid outlet interface in a one-to-one correspondence, and are used to drain the effusion;

[0011] The power assembly is connected to the liquid separation valve core and is used to provide power to the liquid separation valve core.

[0012] Furthermore, the diverting tee comprises:

[0013] A cavity shell, wherein the cavity is arranged on the cavity shell, the cavity penetrates the cavity shell and is used to divide the cavity shell into an annular structure, and the liquid inlet interface, the first liquid outlet interface, and the second liquid outlet interface are circumferentially arranged on the cavity shell;

[0014] There are two sealing covers, which are respectively arranged on two sides of the cavity shell opposite to each other, and are used to seal the cavity;

[0015] The inner shaft has two ends which are rotatably arranged on the two covers in a one-to-one correspondence. The inner shaft is located inside the cavity and distributed along the axis of the annular structure. The liquid separation valve core is arranged on the inner shaft.

[0016] Furthermore, the liquid-separating valve core is a semi-cylindrical structure, and the arc-shaped side surface of the liquid-separating valve core fits with the side surface of the cavity formed by the cavity shell.

[0017] Furthermore, a groove is provided on the side of the cavity shell constituting the cavity, and there are two grooves distributed on both sides of the first liquid outlet interface and the second liquid outlet interface; a limit strip is provided on the arc-shaped side of the liquid separation valve core and is clamped in the groove.

[0018] Furthermore, the power assembly includes:

[0019] An outer shaft, rotatably connected to the inner shaft via a connecting gear;

[0020] A transmission gear connected to the outer shaft with a sliding key;

[0021] There are two moving rods, which are arranged on both sides of the transmission gear and are staggered with the outer shaft. Racks are arranged on the two moving rods. The two racks are relatively distributed and can mesh with the transmission gear. The racks move with the moving rods to drive the transmission gear to rotate. At the same time, any rack is meshed with the transmission gear, while the other rack is not meshed with the transmission gear.

[0022] The shifting rod can be connected with the transmission gear and is used to shift the transmission gear to move on the outer shaft so as to achieve alternate meshing with the two racks.

[0023] Furthermore, the drainage device further comprises a stent, wherein the stent comprises:

[0024] A base having a mounting plate;

[0025] The equipment shell is arranged on the mounting plate, and the diversion tee, the liquid separation valve core, and the water seal assembly are all arranged in the equipment shell;

[0026] There are two placement plates, both of which are arranged on the base through elastic parts. The drainage bottles are placed on the placement plates respectively. The placement plates are connected to the moving rods. When the drainage bottles continue to collect accumulated fluid and cause the weight to increase, the placement plates are pressed to move downward and drive the moving rod to move downward.

[0027] Furthermore, the drainage bottle comprises:

[0028] The lower half of the bottle is placed on the placement board;

[0029] The upper half of the bottle body is connected to the lower half of the bottle body and is provided with a connecting port, wherein the connecting port is connected to the first liquid outlet interface and the second liquid outlet interface; the upper half of the bottle body is a telescopic structure.

[0030] Furthermore, the water seal assembly comprises:

[0031] A first U-shaped pipe, wherein saline is placed inside, and has a first inlet and a first outlet, wherein the first inlet is connected to the liquid inlet interface;

[0032] The second U-shaped pipe has saline placed inside and has a second inlet and a second outlet. The second inlet is connected to the first inlet, and a negative pressure interface is provided at the connection; the second outlet is used to discharge accumulated gas, and the negative pressure interface is used to connect to the negative pressure device.

[0033] Furthermore, the liquid inlet interface comprises:

[0034] The lower liquid hopper is a columnar structure with an inner cavity, and a liquid outlet joint is provided at its lower end, and the liquid outlet joint is communicated with the cavity; the first inlet is connected to the lower liquid hopper for communicating with the cavity;

[0035] The liquid inlet pipe is arranged in the lower liquid hopper, one end of the liquid inlet pipe is located directly above the liquid outlet joint, and the other end of the liquid inlet pipe passes through the lower liquid hopper and is provided with a connecting joint, which is used to connect with the drainage pipe.

[0036] Furthermore, the liquid inlet interface also includes an inclined tube, which is arranged on the side wall of the lower liquid hopper and communicates with the cavity, and the first inlet is connected to the inclined tube.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] The present invention utilizes a diversion tee and a liquid separation valve core to construct two drainage paths, and further cooperates with two drainage bottles for drainage. The alternating drainage of the two drainage bottles can be achieved by rotating the liquid separation valve core, and the entire drainage process will not be interrupted, effectively avoiding drainage interruption that may cause patients to experience discomfort symptoms such as dyspnea, chest tightness, abdominal distension or shortness of breath, and effectively improving the patient's drainage treatment experience.

[0039] Furthermore, since the two drainage bottles are used alternately, there is no need to seal the drainage tube when replacing the drainage bottle, which can effectively reduce the workload of medical staff and effectively avoid the problem of air entering the pleural cavity and causing pneumothorax during the sealing of the drainage tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the internal structure of the present invention;

[0041] Figure 2 It is a schematic diagram of the external structure of the present invention;

[0042] Figure 3 It is a cross-sectional view of the flow-dividing tee and the liquid-dividing valve core of the present invention;

[0043] Figure 4 It is an exploded view of the flow dividing tee, liquid dividing valve core and power assembly of the present invention;

[0044] Figure 5 It is a schematic diagram of the connection structure of the diverter tee and the water seal assembly of the present invention;

[0045] Figure 6 It is a structural schematic diagram of the liquid inlet interface of the present invention;

[0046] Figure 7 It is a transmission principle diagram of the power component of the present invention to the liquid separation valve core.

[0047] Among them, 1-diversion tee, 100-cavity, 101-liquid inlet interface, 1011-lower liquid bucket, 1012-liquid inlet pipe, 1013-connecting joint, 1014-inclined tube, 102-first liquid outlet interface, 103-second liquid outlet interface, 11-cavity shell, 110-groove, 12-cover, 13-inner shaft, 2-liquid separation valve core, 20-limiting bar, 3-water seal assembly, 31-first U-shaped pipe fitting, 32-second U-shaped pipe fitting, 4-drainage bottle, 41-lower half of the bottle body, 42-upper half of the bottle body 42, 5-power assembly, 51-external shaft, 52-transmission, 53-moving rod, 530-rack, 6-bracket, 61-base, 610-mounting plate, 62-equipment shell, 63-placement plate. DETAILED DESCRIPTION

[0048] The following is combined with Figure 1 To the attached Figure 6, the specific embodiments of the present invention are described in detail. In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0049] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0050] Example

[0051] like Figure 1 , 2 , Figure 4 A chest drainage device for cardiac surgery is shown, comprising a diversion tee 1, a liquid separation valve core 2, a water seal assembly 3, a drainage bottle 4 and a power assembly 5.

[0052] The diverter tee 1 has a cavity 100, and is provided with a liquid inlet interface 101, a first liquid outlet interface 102, and a second liquid outlet interface 103 which are respectively connected to the cavity 100, and the liquid inlet interface 101 is used to connect with the drainage tube; the liquid-dividing valve core 2 is rotatably arranged in the cavity 100; when the liquid-dividing valve core 2 rotates to contact with the first liquid outlet interface 102, the first liquid outlet interface 102 is closed, and the liquid inlet interface 101, the cavity 100, and the second liquid outlet interface 103 are connected; when the liquid-dividing valve core 2 rotates to contact with the first liquid outlet interface 102, the first liquid outlet interface 102 is closed, and the liquid inlet interface 101, the cavity 100, and the second liquid outlet interface 103 are connected; When the water seal assembly 3 is connected to the liquid inlet interface 101 and is used to drain the accumulated gas, the two drainage bottles 4 are connected to the first liquid outlet interface 102 and the second liquid outlet interface 103 in a one-to-one correspondence, and the drainage bottles 4 are used to drain the accumulated liquid. The power assembly 5 is connected to the liquid separation valve core 2 and is used to provide power to the liquid separation valve core 2.

[0053] The chest drainage device proposed in this embodiment cooperates with the diversion tee 1 and the liquid separation valve core 2 to effectively divert the accumulated fluid drained from the drainage tube so that it can flow to two drainage bottles 4 respectively. When one of the drainage bottles 4 is full of accumulated fluid, it is only necessary to rotate the liquid separation valve core 2 to divert the accumulated fluid to the other drainage bottle 4, thereby allowing the drainage bottle 4 that is full of accumulated fluid to be replaced.

[0054] In actual use, there is no need to separate the drainage tube from the drainage device, only the drainage bottle 4 needs to be replaced in time. Since the drainage path can be controlled manually or automatically, the drainage device can adapt to different clinical needs and surgical conditions, increasing its applicability in different treatment scenarios. The introduction of the power component 5 provides power for the liquid separation valve core 2, which may mean that the drainage device can realize the function of automatically switching the drainage channel. This not only reduces the operating burden of medical staff, but also reduces the risk of human operating errors.

[0055] Preferably, Figure 1 , Figure 3 , Figure 4 As shown, the flow dividing tee 1 comprises a cavity shell 11, a cover 12 and an inner shaft 13. The cavity 100 of the cavity shell 11 is arranged on the cavity shell 11, and the cavity 100 penetrates the cavity shell 11 and is used to divide the cavity shell 11 into an annular structure. The liquid inlet interface 101, the first liquid outlet interface 102, and the second liquid outlet interface 103 are circumferentially arranged on the cavity shell 11; there are two covers 12, and the two covers 12 are respectively arranged on both sides of the cavity shell 11 opposite to each other, and are used to close the cavity 100; the two ends of the inner shaft 13 are respectively rotatably arranged on the two covers 12 in a one-to-one corresponding manner, and the inner shaft 13 is located inside the cavity 100 and distributed along the axis of the annular structure, and the liquid separation valve core 2 is arranged on the inner shaft 13.

[0056] The cavity shell 11 and the cover 12 form a sealing structure with a cavity 100. The liquid inlet interface 101, the first liquid outlet interface 102, and the second liquid outlet interface 103 are circumferentially arranged on the cavity shell 11, and the angle between the interfaces is 120°. The liquid inlet interface 101, the cavity 100, and the first liquid outlet interface 102 are used to construct one of the drainage paths, and the liquid inlet interface 101, the cavity 100, and the second liquid outlet interface 103 are used to construct another drainage path. In actual use, the liquid separation valve core 2 can be driven to rotate by rotating the inner shaft 13, and after blocking either the first liquid outlet interface 10 or the second liquid outlet interface 103, the accumulated liquid can be drained through the other drainage channel.

[0057] The annular structure design of the cavity shell 11 enables the liquid inlet interface 101, the first liquid outlet interface 102, and the second liquid outlet interface 103 to be arranged circumferentially. This layout makes the entire device more compact and convenient for installation and operation in a limited space. The two ends of the inner shaft 13 are rotatably arranged on the cover 12, so that the liquid separation valve core 2 can rotate freely along the axis of the annular structure inside the cavity 100. This design provides a flexible operating mechanism, allowing medical staff to quickly switch the drainage path as needed.

[0058] Preferably, Figure 3 , Figure 4 As shown, the liquid-separating valve core 2 is a semi-cylindrical structure, and the arc-shaped side surface of the liquid-separating valve core 2 fits with the side surface of the cavity 100 formed by the cavity shell 11 .

[0059] In actual use, Figure 3 As shown, the horizontal plane of the semi-cylindrical structure of the liquid separation valve core 2 is in an inclined state, which can effectively guide the accumulated liquid flowing down from the liquid inlet interface 101. In addition, the liquid separation valve core 2 and the cavity shell 11 are cut to avoid the problem of the liquid separation valve core 2 not sealing the first liquid outlet interface 102 or the second liquid outlet interface 103 tightly.

[0060] It should be noted that the liquid inlet ends of the first liquid outlet interface 102 and the second liquid outlet interface 103 located in the cavity 100 can be funnel-shaped, and the central axis of the first liquid outlet interface 102 and the central axis of the second liquid outlet interface 103 can also be designed to be inclined to match the horizontal plane inclination angle of the liquid separation valve core 2 at the corresponding position.

[0061] Preferably, Figure 4 As shown, a groove 110 is provided on the side of the cavity shell 11 constituting the cavity 100. There are two grooves 110, which are distributed on both sides of the first liquid outlet interface 102 and the second liquid outlet interface 103; a limit strip 20 is provided on the arc-shaped side of the liquid separation valve core 2 and is clamped in the groove 110.

[0062] On the one hand, in order to ensure that the liquid separation valve core 2 and the cavity shell 11 fit more closely, on the other hand, Figure 3 , Figure 4 As shown, the end of the groove 110 can limit the rotation angle of the liquid separation valve core 2, so that it can effectively rotate to the position of the first liquid outlet interface 10 or the second liquid outlet interface 103 to block the interface, avoiding the problem of excessive rotation leading to loose sealing.

[0063] Preferably, Figure 4 As shown, the power assembly 5 includes an outer shaft 51, a transmission gear 52, a moving rod 53 and a shifting rod. The outer shaft 51 is rotatably connected to the inner shaft 13 through a connecting gear; the transmission gear 52 is connected to the outer shaft 51 by a sliding key; there are two moving rods 53, which are arranged on both sides of the transmission gear 52 and are staggered along the axial direction of the outer shaft 51. Racks 530 are arranged on both moving rods 53. The two racks 530 are relatively distributed and can mesh with the transmission gear 52. The racks 530 move with the moving rods 53 to drive the transmission gear 52 to rotate. At the same time, any rack 530 is meshed with the transmission gear 52, and the other rack 530 is not meshed with the transmission gear 52; the shifting rod can be connected to the transmission gear 52, and is used to shift the transmission gear 52 to move on the outer shaft 51 to achieve alternating meshing with the two racks 530.

[0064] It should be noted that: Figure 4As shown, the connecting gear includes a first gear and a second gear meshing with each other. The first gear is arranged on the outer shaft 51 and rotates coaxially with the outer shaft 51 , and the second gear is arranged on the inner shaft 13 and rotates coaxially with the inner shaft 13 .

[0065] like Figure 4 As shown, two moving rods 53 are arranged on both sides of the transmission gear 52 and are staggered along the axial direction of the outer shaft 51. This design allows the transmission gear 52 to be driven bidirectionally through the rack 530 on the moving rod 53, that is, the liquid separation valve core 2 can be controlled to rotate in two different directions. Since the rack 530 is distributed on a partial section of the moving rod 53, when the moving rod 53 continues to move upward or downward until the rack 530 is disengaged from the transmission gear 52, the rack 530 on the moving rod 53 is not engaged with the transmission gear 52. At this time, only the other moving rod 53 needs to be moved to drive the transmission gear 52 to rotate in the opposite direction, that is, drive the liquid separation valve core 2 to rotate in the opposite direction. That is, through the staggered and non-simultaneous movement of the two moving rods 53, it is possible to switch the liquid separation valve core 2 to block the first liquid outlet interface 10 or the second liquid outlet interface 103. The design of the power assembly 5 simplifies the blocking process of the liquid separation valve core 2 , and the rotation of the liquid separation valve core 2 can be controlled by moving the rod 53 , thereby reducing the difficulty and time of operation.

[0066] Preferably, Figure 1 , Figure 2 As shown, the drainage device also includes a bracket 6, which includes a base 61, a device shell 62 and a placement plate 63. The base 61 is provided with a mounting plate 610; the device shell 62 is arranged on the mounting plate 610, and the diversion tee 1, the liquid separation valve core 2, and the water seal assembly 3 are all arranged in the device shell 62; there are two placement plates 63, and the two placement plates 63 are both arranged on the base 61 through elastic members 64, and the drainage bottles 4 are respectively placed on the placement plates 63, and the placement plates 63 are connected to the moving rod 53. When the drainage bottle 4 continues to collect the accumulated fluid and causes the weight to increase, the placement plates 63 are pressed to move downward and drive the moving rod 53 to move downward.

[0067] The drainage bottle 4 and the moving rod 53 are designed to be linked. As the amount of liquid accumulated in the drainage bottle 4 increases, the placement plate 63 descends, which can trigger the movement of the moving rod 53, thereby driving the transmission gear 52 to rotate, so as to drive the liquid separation valve core 2 to switch between closing the first liquid outlet interface 102 and closing the second liquid outlet interface 103, thereby switching the drainage path.

[0068] The design of the bracket 6 provides a stable base 61 to ensure the stability of the entire drainage device. The device shell 62 integrates key components such as the diversion tee 1, the liquid separation valve core 2, and the water seal assembly 3, which is not only convenient for installation and maintenance, but also helps to reduce the impact of the external environment on the internal precision components, thereby improving the reliability of the entire system.

[0069] Preferably, Figure 2 As shown, the drainage bottle 4 includes a lower half bottle body 41 and an upper half bottle body 42. The lower half bottle body 41 is placed on the placement plate 63; the upper half bottle body 42 is connected to the lower half bottle body 41 and is provided with a connection port, which is connected to the first liquid outlet interface 102 and the second liquid outlet interface 103; the upper half bottle body 42 is a telescopic structure.

[0070] The drainage bottle 4 of this structure can effectively ensure the placement stability by using the lower half of the bottle body 41, and can effectively ensure that the drainage bottle 4 has a larger volume by using the upper half of the bottle body 42. The capacity can be increased by extending the upper half of the bottle body 42, and vice versa, the capacity can be reduced by contracting. This design provides flexible capacity management to meet different drainage needs.

[0071] Preferably, Figure 5 As shown, the water seal assembly 3 includes a first U-shaped pipe 31 and a second U-shaped pipe 32. The first U-shaped pipe 31 has brine placed inside, and has a first inlet and a first outlet, and the first inlet is connected to the liquid inlet interface 101; the second U-shaped pipe 32 has brine placed inside, and has a second inlet and a second outlet, and the second inlet is connected to the first inlet, and a negative pressure interface is provided at the connection; the second outlet is used to discharge accumulated gas, and the negative pressure interface is used to connect to a negative pressure device.

[0072] By setting up two independent U-shaped fittings, the system provides a double water seal mechanism, which enhances the ability to prevent gas or liquid backflow. This design is particularly important in medical drainage systems because it can effectively prevent contaminants in the outside air from entering the patient's body, while also preventing the drainage fluid from flowing back into the patient's body. The negative pressure interface can be connected to a negative pressure device to control the pressure in the drainage system to ensure that the accumulated fluid can be drained smoothly from the patient's body, while avoiding damage to the patient's tissue caused by excessive negative pressure. Both U-shaped fittings are filled with saline, which not only provides a water seal effect, but also because the density of saline is higher, it helps to better seal and reduce the possibility of air infiltration. At the same time, saline also has a certain antibacterial effect, which helps to maintain the cleanliness of the drainage system.

[0073] Preferably, Figure 6 As shown, the liquid inlet interface 101 includes a lower liquid bucket 1011 and a liquid inlet pipe 1012 .

[0074] The lower liquid hopper 1011 is a cylindrical structure with an inner cavity, and a liquid outlet joint is provided at its lower end, and the liquid outlet joint is connected to the cavity 100; the first inlet is connected to the lower liquid hopper 1011, and is used to communicate with the cavity 100; the liquid inlet pipe 1012 is arranged in the lower liquid hopper 1011, and one end of the liquid inlet pipe 1012 is located directly above the liquid outlet joint, and the other end of the liquid inlet pipe 1012 passes through the lower liquid hopper 1011 and is provided with a connecting joint 1013, and the connecting joint 1013 is used to connect with the drainage pipe. The inner cavity and cylindrical structure of the lower liquid hopper 1011 help to evenly distribute the liquid before entering the system, reduce liquid impact and vortex, and ensure the smooth inflow of drainage liquid. Since one end of the liquid inlet pipe 1012 is located directly above the liquid outlet joint, it can effectively prevent the accumulated liquid from entering the water seal assembly 3 through the first inlet.

[0075] Preferably, Figure 6 As shown, the liquid inlet interface 101 further includes an inclined tube 1014, which is arranged on the side wall of the lower liquid hopper 1011 and communicates with the cavity 100, and the first inlet is connected to the inclined tube 1014. The inclined tube 1014 can effectively prevent the accumulated liquid from entering the water seal assembly 3 through the first inlet.

[0076] The working principle of the above embodiment is:

[0077] like Figure 7 As shown, since the drainage bottle 4 is in the initial stage of effusion accumulation, it has not collected enough weight of effusion, and has not pressed the placement plate 63 to a suitable position, and thus the moving rod 53 has not moved to a height where the rack 530 can mesh with the transmission gear 52. It should be noted that when in use, check whether the transmission gear 52 is in a position where it can mesh with the moving rod 53 on the side where the effusion is collected, and use the lever to adjust the position of the transmission gear 52.

[0078] As the drainage bottle 4 connected to the second liquid outlet interface 103 continues to collect the accumulated fluid, its weight increases, and it presses the placement plate 63 to a suitable position, so that the corresponding moving rod 53 continues to move downward until the rack 530 on the moving rod 53 meshes with the transmission gear 52, and drives the transmission gear 52 to rotate, the outer shaft 51 and the second gear rotate coaxially with the transmission gear 52, the second gear drives the first gear to rotate, and the liquid separation valve core 2 rotates coaxially with the first gear until the second liquid outlet interface 103 is closed. At this time, the drainage bottle 4 connected to the second liquid outlet interface 103 is full and needs to be replaced. The drainage bottle 4 connected to the first liquid outlet interface 102 begins to collect the accumulated fluid.

[0079] Medical staff can remove the drainage bottle 4 connected to the second liquid outlet interface 103 and replace it at this time. Before replacement, the transmission gear 52 needs to be adjusted using a paddle so that it is in a position where it can mesh with the moving rod 53 on the side that collects the effusion. When the medical staff removes the drainage bottle 4, the placement plate 63 is reset to the initial position by the elastic member 64. At this time, the transmission gear 52 and the moving rod 53 corresponding to the reset placement plate 63 are misaligned, and thus during the upward movement of the moving rod 53, the rack 530 on the moving rod 53 does not mesh with the transmission gear 52.

[0080] The working method of the above embodiment is:

[0081] Before use, place two drainage bottles 4 on two placement plates 63 respectively, and connect the drainage bottles 4 to the first liquid outlet interface 102 and the second liquid outlet interface 103. Add saline to the first U-shaped pipe 31 and the second U-shaped pipe 32, and then check whether the transmission gear 52 is in a position to mesh with the rack 530 on the moving rod 53 on the side of collecting the effusion.

[0082] It should be noted that: the device shell 62 of this embodiment is made of transparent acrylic plate, and the diverter tee 1, the liquid separation valve core 2, and the water seal assembly 3 are all made of polyvinyl chloride. Among them, the diverter tee 1 is made of transparent polyvinyl chloride, and the liquid separation valve core 2 is made of colored polyvinyl chloride. In actual use, it is determined by direct observation whether the transmission gear 52 is in a position where it can mesh with the moving rod 53 on the side of collecting the effusion. The specific operation is as follows: Figure 7 As shown, observe the liquid separation valve core 2, which is in the state of blocking the first liquid outlet interface 102, that is, the drainage bottle 4 connected to the second liquid outlet interface 103 collects the accumulated liquid, then determine whether the transmission gear 52 corresponds to the position of the rack 530 on the moving rod 53 corresponding to the drainage bottle 4, if the position does not correspond, use the lever to move it. The lever of this embodiment is a press-type lever, which is set on the device shell 62. When the lever is pressed, the lower end of the lever can be located at a horizontal plane flush with the transmission gear 52 and can be used to move the transmission gear 52; when the lever is not pressed, the lower end of the lever is located above the transmission gear 52 and will not affect the rotation of the transmission gear 52.

[0083] Collect the accumulated fluid, when one of the drainage bottles 4 is full of accumulated fluid, the liquid separation valve core 2 will automatically rotate until the accumulated fluid flows to the other drainage bottle 4. It should be noted that some sound and light warning devices can also be used. When the liquid separation valve core 2 rotates and jumps, sound and light alarms are given to remind medical staff to replace the drainage bottle in time.

[0084] Before replacing the drainage bottle 4, the medical staff will use the paddle to adjust the position of the transmission gear 52 so that it is located at a position where it can mesh with the moving rod 53 on the side of collecting the effusion. Then the drainage bottle 4 is replaced.

[0085] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and does not limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are included in the protection scope of the present invention.

Claims

1. A chest drainage device for cardiac surgery, characterized in that: include: The flow dividing tee (1) has a cavity (100), and is provided with a liquid inlet interface (101), a first liquid outlet interface (102), and a second liquid outlet interface (103) respectively connected to the cavity (100), and the liquid inlet interface (101) is used to be connected to a drainage tube; The liquid separation valve core (2) is rotatably arranged in the cavity (100); when the liquid separation valve core (2) is rotated to contact the first liquid outlet interface (102), the first liquid outlet interface (102) is closed, and the liquid inlet interface (101), the cavity (100), and the second liquid outlet interface (103) are connected; when the liquid separation valve core (2) is rotated to contact the second liquid outlet interface (103), the second liquid outlet interface (103) is closed, and the liquid inlet interface (101), the cavity (100), and the first liquid outlet interface (102) are connected; A water seal assembly (3), connected to the liquid inlet interface (101), and used for draining accumulated gas; There are two drainage bottles (4), and the two drainage bottles (4) are connected to the first liquid outlet interface (102) and the second liquid outlet interface (103) in a one-to-one correspondence, respectively, and the drainage bottles (4) are used to drain the effusion; The power assembly (5) is connected to the liquid separation valve core (2) and is used to provide power to the liquid separation valve core (2).

2. A chest drainage device for cardiac surgery according to claim 1, characterized in that: The diverting tee (1) comprises: A cavity shell (11), wherein the cavity (100) is arranged on the cavity shell (11), the cavity (100) penetrates the cavity shell (11) and is used to divide the cavity shell (11) into an annular structure, and the liquid inlet interface (101), the first liquid outlet interface (102), and the second liquid outlet interface (103) are circumferentially arranged on the cavity shell (11); There are two sealing covers (12), and the two sealing covers (12) are respectively arranged on two sides of the cavity shell (11) opposite to each other, and are used to seal the cavity (100); The inner shaft (13) has two ends which are rotatably arranged on the two covers (12) in a one-to-one correspondence. The inner shaft (13) is located inside the cavity (100) and is distributed along the axis of the annular structure. The liquid separation valve core (2) is arranged on the inner shaft (13).

3. A chest drainage device for cardiac surgery according to claim 2, characterized in that: The liquid separation valve core (2) is a semi-cylindrical structure, and the arc-shaped side surface of the liquid separation valve core (2) fits with the side surface of the cavity (100) formed by the cavity shell (11).

4. A chest drainage device for cardiac surgery according to claim 3, characterized in that: A groove (110) is provided on the side of the cavity shell (11) constituting the cavity (100), and there are two grooves (110) distributed on both sides of the first liquid outlet interface (102) and the second liquid outlet interface (103); a limit strip (20) is provided on the arc-shaped side of the liquid separation valve core (2) and is clamped in the groove (110).

5. A chest drainage device for cardiac surgery according to claim 3, characterized in that: The power assembly (5) comprises: An outer shaft (51) is rotationally connected to the inner shaft (13) via a connecting gear; A transmission gear (52) is connected to the outer shaft (51) by a sliding key; There are two moving rods (53), which are arranged on both sides of the transmission gear (52) and are staggered along the axial direction of the outer shaft (51). The two moving rods (53) are both provided with racks (530), which are relatively distributed and can mesh with the transmission gear (52). The racks (530) move with the moving rods (53) to drive the transmission gear (52) to rotate. At the same time, any rack (530) is meshed with the transmission gear (52), while the other rack (530) is not meshed with the transmission gear (52); The shifting rod can be connected to the transmission gear (52) and is used to shift the transmission gear (52) to move on the outer shaft (51) so as to achieve alternating meshing with the two racks (530).

6. A chest drainage device for cardiac surgery according to claim 5, characterized in that: The drainage device further comprises a support (6), wherein the support (6) comprises: A base (61) provided with a mounting plate (610); The device shell (62) is arranged on the mounting plate (610), and the flow dividing tee (1), the liquid dividing valve core (2), and the water seal assembly (3) are all arranged in the device shell (62); There are two placement plates (63), both of which are arranged on the base (61) through elastic members (64), and the drainage bottles (4) are placed on the placement plates (63) respectively. The placement plates (63) are connected to the moving rod (53). When the drainage bottle (4) continuously collects accumulated fluid and causes the weight to increase, the placement plates (63) are pressed to move downward and drive the moving rod (53) to move downward.

7. A chest drainage device for cardiac surgery according to claim 6, characterized in that: The drainage bottle (4) comprises: The lower half of the bottle body (41) is placed on a placement plate (63); The upper half of the bottle body (42) is connected to the lower half of the bottle body (41) and is provided with a connection port, wherein the connection port is connected to the first liquid outlet interface (102) and the second liquid outlet interface (103); the upper half of the bottle body (42) is a telescopic structure.

8. A chest drainage device for cardiac surgery according to claim 1, characterized in that: The water seal assembly (3) comprises: A first U-shaped pipe (31) having saline placed therein and having a first inlet and a first outlet, wherein the first inlet is connected to the liquid inlet interface (101); The second U-shaped pipe (32) has saline solution placed inside and has a second inlet and a second outlet. The second inlet is connected to the first inlet, and a negative pressure interface is provided at the connection. The second outlet is used to discharge accumulated gas, and the negative pressure interface is used to connect to a negative pressure device.

9. A chest drainage device for cardiac surgery according to claim 8, characterized in that: The liquid inlet interface (101) comprises: The lower liquid hopper (1011) is a columnar structure having an inner cavity, and a liquid outlet joint is provided at its lower end, and the liquid outlet joint is communicated with the cavity (100); the first inlet is connected to the lower liquid hopper (1011) and is used to communicate with the cavity (100); A liquid inlet pipe (1012) is arranged in the lower liquid hopper (1011), one end of the liquid inlet pipe (1012) is located directly above the liquid outlet joint, and the other end of the liquid inlet pipe (1012) passes through the lower liquid hopper (1011) and is provided with a connecting joint (1013), and the connecting joint (1013) is used to connect to the drainage pipe.

10. A chest drainage device for cardiac surgery according to claim 9, characterized in that: The liquid inlet interface (101) further comprises an inclined tube (1014), wherein the inclined tube (1014) is arranged on the side wall of the lower liquid hopper (1011) and is in communication with the cavity (100), and the first inlet is connected to the inclined tube (1014).

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