Anti-blocking drainage device for thoracic surgery department

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a thoracic surgery anti-blocking drainage apparatus which comprises a bottom plate, a drainage apparatus body is detachably assembled at the upper end of the bottom plate, a first elastic element is assembled in the drainage apparatus body, an air inlet connector and an air outlet connector are fixed to the upper end of the drainage apparatus body, and an air outlet connector is fixed to the lower end of the drainage apparatus body. The drainage device further comprises a pressure adjusting part, the pressure adjusting part is assembled between the bottom plate and the drainage device body, the pressure adjusting part comprises an air storage pipe, a traction block and a piston block, and the air storage pipe is fixed to the upper end of the bottom plate. Drainage is conducted on a patient through the drainage device body, the mass of the drainage device body is gradually increased, the piston block is driven to move, negative pressure is formed in the third cavity, and when the negative pressure in the third cavity is larger than the opening pressure of the one-way valve and the negative pressure in the drainage device body, drainage is conducted. And gas in the drainage apparatus main body is pumped into the third cavity, so that the negative pressure in the drainage apparatus main body is relatively increased, and the anti-blocking performance of the device is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of medical devices, and particularly relates to a thoracic surgery anti-blocking drainage device. BACKGROUND

[0002] In the modern thoracic surgery medical system, a negative pressure drainage device, as an indispensable treatment equipment, is widely used in various thoracic surgery operations and postoperative rehabilitation scenes. Its core principle is to continuously drain the excess fluid and gas in the thoracic cavity to the outside of the body by building a pressure difference between the thoracic cavity and the outside world, so as to maintain the pressure balance in the thoracic cavity, promote the adhesion and closure of the pleural cavity, and create good conditions for postoperative recovery of patients, thereby playing a crucial role in reducing the risk of complications and accelerating the recovery process. However, in the process of clinical practice, the existing negative pressure drainage device has many inconveniences. Firstly, as the drainage time is prolonged, a large amount of body fluid and gas in the thoracic cavity continuously flows into the inside of the drainage device, causing the negative pressure value in the drainage device to continuously decrease, and the negative pressure adsorption effect to gradually decrease, so that it is difficult to maintain an efficient drainage state. Secondly, during the drainage process, blood clots, thick pus and tissue debris in the patient's body are prone to accumulate in the drainage tube, and once the drainage channel is blocked, the drainage work will be directly interrupted, causing the thoracic fluid to be unable to be discharged in time, and further causing serious consequences such as incomplete lung recruitment and increased infection, which brings great health risks to the patient. Therefore, the existing negative pressure drainage device has two core problems of negative pressure maintenance failure and drainage tube blockage, which seriously affects the overall effect and safety of thoracic surgery drainage treatment, and has been difficult to meet the needs of efficient and stable drainage equipment under the current trend of precision medicine. Based on the above problems, the present application provides a thoracic surgery anti-blocking drainage device to improve the above problems. SUMMARY

[0003] The purpose of the present application is to provide a thoracic surgery anti-blocking drainage device, which drains the patient through the drainage device main body. The mass of the drainage device main body gradually increases and drives the piston block to move, so that a negative pressure is formed in the third cavity. When the negative pressure in the third cavity is greater than the opening pressure of the one-way valve and the negative pressure in the inside of the drainage device main body, the gas in the inside of the drainage device main body is sucked into the third cavity, so that the negative pressure in the inside of the drainage device main body is relatively increased, and the anti-blocking performance of the device is improved.

[0004] The technical scheme adopted by the present application is as follows: A thoracic surgery anti-blocking drainage device, comprising a bottom plate, a drainage device main body detachably assembled on the upper end of the bottom plate, a first elastic element assembled in the inside of the drainage device main body, and an air inlet joint and an air outlet joint fixed on the upper end of the drainage device main body, further comprising: The pressure regulating part is assembled between the bottom plate and the drainage device body, and comprises an air storage tube, a traction block and a piston block. The air storage tube is fixed to the upper end of the bottom plate. The traction block and the piston block are respectively slidably connected to the two ends inside the air storage tube. The air storage tube and the traction block are clearance fitted, and the air storage tube and the piston block are transition fitted. The traction block and the piston block and the traction block and the drainage device body are connected. The inside of the air storage tube is divided into a first cavity, a second cavity and a third cavity by the traction block and the piston block. The traction block and the first cavity and the piston block and the third cavity are mutually adapted. The third cavity and the drainage device body are in communication. The mass of the drainage device body gradually increases with the increase of the body fluid. The traction block and the piston block are synchronously moved by the drainage device body. A negative pressure is formed in the third cavity. The gas inside the drainage device body is extracted through the third cavity, so that the negative pressure in the drainage device body is increased.

[0005] In a preferred embodiment, the outer side of the traction block is provided with a storage plate. An arc-shaped clamping groove is formed in the upper end of the storage plate. The arc-shaped clamping groove and the drainage device body are adapted. The drainage device body and the storage plate are connected through the arc-shaped clamping groove.

[0006] In a preferred embodiment, a guide slot is formed in the outer side of the air storage tube. A cross rod is slidably connected inside the guide slot. A rotation stopping surface is formed in the outer side of the cross rod. The rotation stopping surface and the guide slot are adapted. The traction block and the cross rod and the storage plate and the cross rod are fixedly connected. The traction block and the storage plate are fixedly connected through the cross rod.

[0007] In a preferred embodiment, an air exchange hole is formed in the lower end of the third cavity. A pressure regulating tube is fixed to the outer side of the air exchange hole. A one-way valve is fixed to the end of the pressure regulating tube away from the air exchange hole. The one-way valve and the exhaust connector are adapted. The third cavity and the drainage device body are connected through the cooperation of the pressure regulating tube and the one-way valve. The flow direction of the one-way valve is from the drainage device body to the pressure regulating tube.

[0008] In a preferred embodiment, the opening pressure of the one-way valve is Pa1, and the closing pressure of the one-way valve is Pa2, Pa1>Pa2. In the initial state, the one-way valve is in a normally closed state.

[0009] In a preferred embodiment, a driven block is slidably connected inside the second cavity. A second elastic element is assembled between the driven block and the piston block. A traction rope is assembled between the driven block and the traction block.

[0010] In a preferred embodiment, a sealing cap is threadedly connected to the lower end of the air storage tube. The sealing cap and the piston block are adapted. A reset rope is assembled between the piston block and the sealing cap.

[0011] In a preferred scheme, the upper end of the bottom plate is equipped with a crushing part, the crushing part comprising a shell, a driving motor and a crushing knife, the shell being arranged at the upper end of the bottom plate, an electrical cavity and a crushing cavity being formed in the shell, the driving motor being fixed in the electrical cavity, the crushing cavity being rotatably connected to the inside of the crushing cavity through a sealing bearing, and the output end of the crushing cavity and the driving motor being fixedly connected, the upper end and the lower end of the outside of the crushing cavity being respectively provided with a liquid inlet and a liquid outlet, and the liquid outlet and the gas inlet connector being connected through a pipeline.

[0012] In a preferred scheme, an energy storage element is fixed in the electrical cavity, and the driving motor and the energy storage element and the charging interface and the energy storage element are electrically connected through wires.

[0013] The technical effects achieved by the present application are: The present application drains the body fluid and gas in the patient's chest cavity through the drainage device main body. The mass of the drainage device main body gradually increases with the inflow of the body fluid. Under the action of gravity, the drainage device main body drives the traction block and the piston block to move, so that a negative pressure is formed in the third cavity. When the negative pressure in the third cavity is greater than the opening pressure of the one-way valve and the negative pressure in the drainage device main body, the one-way valve opens, the gas in the drainage device main body is sucked into the third cavity, the negative pressure in the drainage device main body is relatively increased, the negative pressure drainage effect of the drainage device main body is improved, and the anti-blocking performance of the device is improved. The present application sets a detachable sealing cap at the lower end of the gas storage pipe, and connects the piston block and the sealing cap through a reset rope. When it is necessary to replace the drainage device main body or reset the piston block, pulling the sealing cap can drive the piston block to reset, so that the device is convenient for recycling, and the convenience of use of the device is improved. When the patient is drained, the body fluid is pre-drained into the crushing cavity through the drainage hose. The blood clots, sputum and tissue debris in the body fluid flowing through the crushing cavity are crushed by the driving motor driving the crushing knife to rotate, so as to avoid the blood clots, sputum and tissue debris causing drainage blockage, drainage interruption and other phenomena, and further improve the anti-blocking performance of the device. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural schematic view of the whole in the embodiment one of the present application; Figure 2 is a rear view of the whole structure in the embodiment one of the present application; Figure 3 is a structural schematic view of the inside of the drainage device main body in the embodiment one of the present application; Figure 4 is a structural schematic view of the pressure regulating part in the embodiment one of the present application; Figure 5 is the internal structure diagram of the gas storage tube in the embodiment one of the application; Figure 6 is the structure explosion diagram of the pressure regulating part in the embodiment one of the application; Figure 7 is the internal structure diagram of the crushing part in the embodiment two of the application; Figure 8 is the internal structure diagram of the shell in the embodiment two of the application.

[0015] In the drawings, the component list represented by each sign is as follows: 100, bottom plate; 101, positioning collar; 110, flow inducer main body; 111, first elastic element; 112, air inlet connector; 113, air outlet connector; 200, pressure regulating part; 201, gas storage tube; 202, traction block; 203, piston block; 204, first cavity; 205, second cavity; 206, third cavity; 207, storage plate; 208, crossbar; 209, pressure regulating tube; 210, one-way valve; 211, driven block; 212, second elastic element; 213, traction rope; 214, sealing cap; 215, reset rope; 216, limiting plate; 300, crushing part; 301, shell; 302, driving motor; 303, crushing knife; 304, electrical cavity; 305, crushing cavity; 306, liquid inlet; 307, liquid outlet; 308, energy storage element. DETAILED DESCRIPTION

[0016] In order to make the above-mentioned purposes, features and advantages of the application more obvious and easy to understand, the specific embodiments of the application will be described in detail below with reference to the drawings.

[0017] In the following description, a lot of specific details are set forth in order to give a thorough understanding of the application, but the application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the application, therefore the application is not limited by the specific embodiments disclosed below.

[0018] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the application. "In a preferred embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an independent or alternative embodiment that excludes other embodiments.

[0019] Thirdly, the present application is described in detail in combination with the schematic diagram, in the detailed description of the embodiments of the present application, for the convenience of description, the sectional view of the device structure will be partially enlarged without the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present application. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in actual production.

[0020] Embodiment one Please refer to the accompanying Figures 1 to 5 As shown in the first embodiment of the present application, the embodiment provides a thoracic surgery anti-blocking drainage device, which comprises a bottom plate 100, one end of the top of the bottom plate 100 is fixed with a plurality of positioning sleeve rings 101, the upper end of the bottom plate 100 is detachably assembled with a drainage device main body 110, the inside of the drainage device main body 110 is assembled with a first elastic element 111, the upper end of the drainage device main body 110 is fixed with an air inlet connector 112 and an air outlet connector 113, and further comprising: A pressure regulating part 200 is assembled between the bottom plate 100 and the drainage device main body 110, the pressure regulating part 200 comprises an air storage pipe 201, a traction block 202 and a piston block 203, the air storage pipe 201 is fixed inside the positioning sleeve ring 101, the air storage pipe 201 and the bottom plate 100 are fixedly connected through the positioning sleeve ring 101, the cross-sectional shape of the air storage pipe 201 is U-shaped, the traction block 202 is slidingly connected inside the air storage pipe 201 in a clearance fit manner, the piston block 203 is slidingly connected inside the air storage pipe 201 in an interference fit manner, and the traction block 202 and the piston block 203 and the traction block 202 and the drainage device main body 110 are connected, in the initial state, the traction block 202 is located at the upper end of the piston block 203, the inside of the air storage pipe 201 is divided into a first cavity 204, a second cavity 205 and a third cavity 206 by the traction block 202 and the piston block 203, the traction block 202 and the first cavity 204 and the piston block 203 and the third cavity 206 are mutually adapted, and the third cavity 206 and the drainage device main body 110 are intermittently communicated; Wherein, the mass of the drainage device main body 110 gradually increases with the increase of the body fluid, the traction block 202 and the piston block 203 are synchronously moved by the drainage device main body 110, a negative pressure is formed in the third cavity 206, the gas inside the drainage device main body 110 is extracted through the third cavity 206, so that the negative pressure inside the drainage device main body 110 is increased, and the anti-blocking effect of the device is improved.

[0021] It should be noted that in the initial state, the first elastic element 111 is in a compressed state, the drainage device main body 110 is in a flat cylindrical form, and the inside of the drainage device main body 110 is in a vacuum negative pressure state, in detail, it can be referred to the prior art, in the working state, the inside of the third cavity 206 is a sealed space.

[0022] Here, the traction block 202 and the piston block 203 are moved synchronously by the drainage device main body 110, and the moving directions of the traction block 202 and the piston block 203 are opposite.

[0023] In this embodiment, when the patient is subjected to the chest drainage, one end of the drainage hose is connected with the air inlet connector 112, and the other end is placed in the part of the patient's chest cavity which needs to be drained. The body fluid and gas in the patient's chest cavity flow into the drainage device main body 110 through the drainage hose and the air inlet connector 112 in sequence. The mass of the drainage device main body 110 gradually increases with the inflow of the body fluid. Under the action of gravity, the drainage device main body 110 drives the traction block 202 to move downward. Since the traction block 202 and the piston block 203 are connected, the traction block 202 drives the piston block 203 to move upward, thereby increasing the space in the third cavity 206 and forming a negative pressure in the third cavity 206. Since the third cavity 206 and the drainage device main body 110 are in communication, the gas in the drainage device main body 110 is extracted through the third cavity 206, so that the gas in the drainage device main body 110 flows into the third cavity 206, thereby increasing the negative pressure value in the drainage device main body 110. To some extent, the phenomenon of reduced negative pressure adsorption effect and reduced drainage effect caused by the decrease of the negative pressure of the drainage device main body 110 is alleviated, and the probability of the drainage hose being blocked by blood clots and tissue debris and the drainage being interrupted is reduced.

[0024] It should be noted that in this embodiment, the mass of the drainage device main body 110 refers to the sum of the mass of the drainage device main body 110 itself and the mass of the body fluid in it.

[0025] Secondly, please refer to Figures 4 to 6 The outer side of the traction block 202 is provided with a storage plate 207, and the upper end of the storage plate 207 is provided with an arc-shaped clamping groove which is matched with the drainage device main body 110. The drainage device main body 110 is connected with the upper end of the storage plate 207 through the arc-shaped clamping groove.

[0026] Here, the lower end of the drainage device main body 110 is provided with a lower sealing plate which is matched with the arc-shaped clamping groove. The drainage device main body 110 is connected with the upper end of the storage plate 207 through the cooperation of the lower sealing plate and the arc-shaped clamping groove.

[0027] Further, the outer side of the gas storage pipe 201 is provided with a guide through slot, and the inner side of the guide through slot is slidably connected with a horizontal rod 208. The outer side of the horizontal rod 208 is provided with a rotation stopping surface which is matched with the guide through slot. The traction block 202 and the horizontal rod 208 and the storage plate 207 and the horizontal rod 208 are fixedly connected. The traction block 202 and the storage plate 207 are fixedly connected through the horizontal rod 208.

[0028] In this embodiment, since the drainage device is a disposable medical device, the arc-shaped clamping groove can limit the drainage device body 110 and facilitate the disassembly and assembly of the drainage device body 110. Meanwhile, when the drainage device body 110 drives the traction block 202 to move, the cooperation between the rotation-stopping surface and the guide through slot can prevent the traction block 202 from rotating around the axis of the horizontal rod 208, so that the traction block 202 and the gas storage tube 201 can be kept in a clearance fit state, and the friction between the gas storage tube 201 and the traction block 202 can be avoided, so that the drainage device body 110 cannot move downward under the action of gravity.

[0029] Secondly, please refer to Figures 4 to 6 , the lower end of the third cavity 206 is provided with a gas exchange hole, the outer side of the gas exchange hole is fixedly connected with a pressure regulating pipe 209, one end of the pressure regulating pipe 209 away from the gas exchange hole is fixedly connected with a one-way valve 210, the one-way valve 210 is matched with the exhaust joint 113, the third cavity 206 and the drainage device body 110 are connected through the cooperation of the pressure regulating pipe 209 and the one-way valve 210, the flow direction of the one-way valve 210 is from the drainage device body 110 to the pressure regulating pipe 209, the inside of the second cavity 205 is slidably connected with a driven block 211, the driven block 211 and the piston block 203 are assembled with a second elastic element 212, the driven block 211 and the traction block 202 are assembled with a traction rope 213, and the traction block 202 and the traction rope 213 and the driven block 211 and the traction rope 213 are fixedly connected.

[0030] Further, the opening pressure of the one-way valve 210 is denoted as Pa1, the closing pressure of the one-way valve 210 is denoted as Pa2, Pa1>Pa2, and in the initial state, the one-way valve 210 is in a normally closed state.

[0031] Here, in order to better describe the working process of the device, the real-time pressure value in the third cavity 206 is denoted as PA, and the real-time pressure value in the drainage device body 110 is denoted as PB.

[0032] In this embodiment, during the process of chest drainage for the patient, body fluids and gases enter the interior of the drain body 110 through the drainage hose, the space inside the drain body 110 gradually increases, and the internal pressure value PB gradually decreases. At the same time, as the mass of the drain body 110 increases, the drain body 110 drives the traction block 202 and the storage plate 207 to move downward synchronously under the action of gravity. Since the traction block 202 and the driven block 211 are connected by the traction rope 213, the driven block 211 is driven to move upward by the traction block 202. Since the second elastic element 212 is fixed between the driven block 211 and the piston block 203 , the second elastic element 212 is stretched by the follower block 211 (the piston block 203 and the gas storage tube 201 are in transition fit, and the follower block 211 and the gas storage tube 201 are in clearance fit. Due to the friction between the piston block 203 and the gas storage tube 201, the movement speed of the follower block 211 is greater than the movement speed of the piston block 203, so the second elastic element 212 is stretched), and the piston block 203 is simultaneously driven to move upward, and the space inside the third cavity 206 increases and generates negative pressure. As the distance the third cavity 206 moves upward increases, the pressure value PA inside the third cavity 206 gradually increases. When PA is greater than Pa1 and PA is greater than PB, the one-way valve 210 changes from a normally closed state to an open state. At this time, the interior of the flow guide body 110 and the interior of the third cavity 206 are interconnected. The gas inside the flow guide body 110 flows into the interior of the third cavity 206 through the exhaust joint 113, the one-way valve 210 and the pressure regulating pipe 209 in sequence to balance the negative pressure inside the flow guide body 110 and the interior of the third cavity 206. In this process, PA gradually decreases compared to before the one-way valve 210 is opened, and PB gradually increases compared to before the one-way valve 210 is opened. The second elastic element 212 in the stretched state will drive the piston block 203 to open again. The one-way valve 210 moves upward again, causing more gas to flow from the inside of the drain device body 110 to the inside of the third cavity 206. The negative pressure value inside the drain device body 110 is further increased compared to before the one-way valve 210 is opened. After the negative pressure value inside the drain device body 110 is relatively increased, the negative pressure drainage effect can be guaranteed, the adsorption capacity of the drain device body 110 during the drainage process is improved, and the anti-blocking ability of the device is further improved; when PA is less than Pa2, the one-way valve 210 changes from an open state to a closed state, the drain device body 110 and the third cavity 206 are no longer connected to each other, and the drain device body 110 continues to drain the body fluids and gases inside the chest cavity.

[0033] Please refer again Figures 4 to 6 The lower end of the gas storage pipe 201 is threadedly connected to a sealing cap 214 , and the sealing cap 214 is adapted to the piston block 203 , and a reset rope 215 is assembled between the piston block 203 and the sealing cap 214 .

[0034] In this embodiment, after replacing the drainage device body 110, the traction block 202, the piston block 203 and the driven block 211 need to be reset, the sealing cap 214 is rotated to release the threaded connection between the gas storage pipe 201 and the sealing cap 214. Since the piston block 203 and the sealing cap 214 are connected by the reset rope 215, pulling the sealing cap 214 drives the piston block 203, the driven block 211 and the second elastic element 212 to move downward synchronously through the reset rope 215 to reset. When the piston block 203 is reset, the sealing cap 214 is rotated to threadedly connect the sealing cap 214 and the gas storage pipe 201, so that a sealed space is formed again in the third cavity 206.

[0035] It should be noted that during the drainage process, when the space inside the third cavity 206 reaches the maximum, the above operation can also be performed to exhaust the gas inside the drainage device body 110. During this process, since the one-way valve 210 is in a closed state, gas outside the device will not enter the drainage device body 110.

[0036] Please refer again to Figures 5 to 6 The inside of the gas storage pipe 201 is fixed with two limiting plates 216, and the two limiting plates 216 are respectively matched with the traction block 202 and the piston block 203. A threading hole is coaxially formed in the inside of the limiting plate 216, and the threading hole is matched with the traction rope 213. The limiting plate 216 can limit the movement range of the traction block 202 and the piston block 203 respectively. At the same time, the coaxially arranged threading hole can guide the traction rope 213. When the traction block 202 moves the driven block 211 through the traction rope 213, the setting of the threading hole can avoid the eccentricity of the pulling force of the traction rope 213 applied to the driven block 211, so that the driven block 211 is more evenly stressed during movement.

[0037] Example two Please refer again to Figure 7 and 8 This embodiment is further optimized on the basis of example one, specifically: The upper end of the bottom plate 100 is assembled with a crushing part 300. The crushing part 300 includes a shell 301, a drive motor 302 and a crushing knife 303. The shell 301 is arranged at the upper end of the bottom plate 100. An electrical cavity 304 and a crushing cavity 305 are formed in the inside of the shell 301. The drive motor 302 is fixed in the inside of the electrical cavity 304. The crushing cavity 305 is rotatably connected to the inside of the crushing cavity 305 through a sealing bearing, and the crushing cavity 305 and the output end of the drive motor 302 are fixedly connected. The upper end and the lower end of the outside of the crushing cavity 305 are respectively provided with a liquid inlet 306 and a liquid outlet 307, and the liquid outlet 307 and the gas inlet connector 112 are connected through a pipeline.

[0038] It should be noted that the driving motor 302 is preferably a silent motor, and the noise of the driving motor 302 after operation is lower than 30 decibels, so as to avoid noise interference on the patient after operation of the driving motor 302.

[0039] Further, the outside of the electric cavity 304 is provided with an opening and closing button (not shown in the figure), and the opening and closing button and the driving motor 302 are electrically connected through wires.

[0040] In this embodiment, when the chest of the patient is drained, one end of the drainage hose is connected with the liquid inlet 306, and the other end is placed in the part to be drained inside the chest. During the drainage process, the body fluid and gas enter the crushing cavity 305 through the drainage hose and the liquid inlet 306 in turn. The driving motor 302 is started, so that the output end of the driving motor 302 rotates. Through the fixed connection of the driving motor 302 and the crushing knife 303, the driving motor 302 drives the crushing knife 303 to rotate. The blood clots, sputum and tissue debris in the body fluid contact the rotating crushing knife 303, and the blood clots, sputum and tissue debris are crushed by the crushing knife 303. After crushing, the diameter of the blood clots, sputum and tissue debris is greatly reduced, and they flow into the drainage device main body 110 through the liquid outlet 307, so as to effectively avoid the phenomenon of blockage and interruption of the drainage pipeline.

[0041] Please refer to Figure 8 , the inside of the electric cavity 304 is fixed with an energy storage element 308, and the outside of the electric cavity 304 is provided with a charging interface. The driving motor 302 and the energy storage element 308 and the charging interface and the energy storage element 308 are electrically connected through wires.

[0042] In this embodiment, the setting of the energy storage element 308 improves the portability of the device, and the setting of the charging interface facilitates the charging of the energy storage element 308.

[0043] The working principle of the present application is as follows: When the chest drainage is performed on the patient, one end of the drainage hose is connected with the air inlet joint 112, and the other end is placed in the part of the patient's chest cavity that needs to be drained. The body fluid and gas inside the patient's chest cavity flow into the inside of the drainage device main body 110 through the drainage hose and the air inlet joint 112 in turn. The space inside the drainage device main body 110 gradually increases, and the pressure value inside it gradually decreases. The mass of the drainage device main body 110 gradually increases with the inflow of the body fluid. Under the action of gravity, the drainage device main body 110 drives the traction block 202 to move downward. The piston block 203, the driven block 211 and the second elastic element 212 are synchronously moved upward by the traction block 202. At the same time, the second elastic element 212 is stretched. The space inside the third cavity 206 increases and forms a negative pressure, so that the one-way valve 210 changes from the normally closed state to the open state. The third cavity 206 and the drainage device main body 110 are in communication with each other. The gas inside the drainage device main body 110 flows into the inside of the third cavity 206 under the action of negative pressure, and the negative pressure values inside the drainage device main body 110 and the third cavity 206 are balanced. The negative pressure inside the drainage device main body 110 relatively increases before the one-way valve 210 is opened, which improves the negative pressure drainage effect of the drainage device main body 110. At the same time, during the drainage process, the driving motor 302 is started, and the broken knife 303 is rotated by the driving motor 302 to break the blood clots, sputum and tissue debris in the body fluid, so as to avoid the blockage of the drainage pipeline and ensure the smoothness of the drainage process.

[0044] The above is only the preferred embodiment of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, several improvements and refinements can be made, which should also be considered as the protection scope of the present application. The structures, devices and operation methods not specifically described and explained in the present application are implemented according to the conventional means in the art, unless otherwise specified and limited.

Claims

1. A thoracic surgery anti-blocking drainage device, characterized by: The invention comprises a bottom plate (100), the upper end of the bottom plate (100) being detachably equipped with a flow diverter body (110), the interior of the flow diverter body (110) being equipped with a first elastic element (111), the upper end of the flow diverter body (110) being fixed with an air intake connector (112) and an air exhaust connector (113), and further comprising: A pressure regulating part (200) is assembled between the bottom plate (100) and the flow guide body (110), and the pressure regulating part (200) includes an air storage pipe (201), a traction block (202) and a piston block (203). The air storage pipe (201) is fixed to the upper end of the bottom plate (100), and the traction block (202) and the piston block (203) are respectively slidably connected to the two ends of the inside of the air storage pipe (201). The traction block (202) and the piston block (203) are respectively slidably connected to the two ends of the inside of the air storage pipe (201). The traction block (202) and the flow diverter body (110) are all connected, the interior of the gas storage tube (201) is divided into a first cavity (204), a second cavity (205) and a third cavity (206) by the traction block (202) and the piston block (203), the traction block (202) and the first cavity (204) and the piston block (203) and the third cavity (206) are adapted to each other, and the third cavity (206) and the flow diverter body (110) are in communication with each other; The mass of the drain device body (110) gradually increases as the amount of body fluid increases, and a negative pressure is formed inside the third cavity (206). The gas inside the drain device body (110) is extracted through the third cavity (206), thereby increasing the negative pressure inside the drain device body (110).

2. The anti-blocking drainage device for thoracic surgery according to claim 1, characterized in that: A storage plate (207) is provided on the outside of the traction block (202), and an arc-shaped slot is provided at the upper end of the storage plate (207), and the arc-shaped slot is adapted to fit the diverter body (110).

3. The anti-blocking drainage device for thoracic surgery according to claim 2, characterized in that: A guide slot is provided on the outside of the gas storage pipe (201), a cross bar (208) is slidably connected to the inside of the guide slot, a rotation-stopping surface is provided on the outside of the cross bar (208), the rotation-stopping surface and the guide slot are adapted to each other, and the traction block (202) and the cross bar (208) as well as the storage plate (207) and the cross bar (208) are all fixedly connected.

4. The anti-blocking drainage device for thoracic surgery according to claim 1, characterized in that: A ventilation hole is provided at the lower end of the third cavity (206), a pressure regulating tube (209) is fixed to the outside of the ventilation hole, a one-way valve (210) is fixed to the end of the pressure regulating tube (209) away from the ventilation hole, and the one-way valve (210) is adapted to the exhaust joint (113), and the third cavity (206) is connected to the drain body (110).

5. The anti-blocking drainage device for thoracic surgery according to claim 4, characterized in that: The opening pressure of the one-way valve (210) is recorded as Pa1, and the closing pressure of the one-way valve (210) is recorded as Pa2, Pa1>Pa2. In the initial state, the one-way valve (210) is in a normally closed state.

6. The anti-blocking drain device for thoracic surgery according to claim 1, characterized in that: A driven block (211) is slidably connected inside the second cavity (205), a second elastic element (212) is installed between the driven block (211) and the piston block (203), and a traction rope (213) is installed between the driven block (211) and the traction block (202).

7. The anti-blocking drainage device for thoracic surgery according to claim 1, characterized in that: The lower end of the gas storage pipe (201) is threadedly connected to a sealing cap (214), and the sealing cap (214) is adapted to the piston block (203). A reset rope (215) is installed between the piston block (203) and the sealing cap (214).

8. The anti-blocking drainage device for thoracic surgery according to claim 1, characterized in that: The upper end of the base plate (100) is equipped with a crushing part (300), and the crushing part (300) includes a shell (301), a drive motor (302) and a crushing knife (303). The shell (301) is arranged at the upper end of the base plate (100), and an electrical chamber (304) and a crushing chamber (305) are provided inside the shell (301). The drive motor (302) is fixed inside the electrical chamber (304). The crushing chamber (305) is rotatably connected to the inside of the crushing chamber (305) through a sealed bearing, and the crushing chamber (305) and the output end of the drive motor (302) are fixedly connected. The upper end and the lower end of the outer side of the crushing chamber (305) are respectively provided with a liquid inlet (306) and a liquid outlet (307), and the liquid outlet (307) and the air inlet joint (112) are connected through a pipeline.

9. The anti-blocking drainage device for thoracic surgery according to claim 8, characterized in that: An energy storage element (308) is fixed inside the electrical cavity (304), a charging interface is provided outside the electrical cavity (304), and the drive motor (302) and the energy storage element (308), as well as the charging interface and the energy storage element (308), are electrically connected via wires.

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