Hydrops drainage device for thoracic surgery department

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a thoracic surgery hydrops drainage device which comprises a drainage tube and a conveying tube. The crushing mechanism is arranged in the drainage tube; the filtering mechanism is arranged at the end part of the drainage tube and is used for blocking large impurities in the accumulated liquid; the cleaning mechanism is arranged on the crushing mechanism and is used for cleaning the filtering mechanism; the auxiliary mechanism is arranged in the conveying pipe; wherein the auxiliary mechanism comprises pressure measuring parts, the multiple pressure measuring parts are annularly distributed on the conveying pipe, pressure relief parts are arranged on the two sides of each pressure measuring part, a water conveying part is arranged on the conveying pipe, a net extruding part is arranged in the conveying pipe, and a linkage part is arranged on the water conveying part. The device can automatically monitor blockage of the filter screen and start flushing, and meanwhile, through a linkage pressure relief and filter screen expansion mechanism, chest pressure shock is effectively prevented, and smoothness of a drainage channel is doubly guaranteed.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of medical devices, and particularly relates to a pleural effusion drainage device. BACKGROUND

[0002] Pleural effusion drainage devices are crucial in the clinical treatment of thoracic surgery, used to remove accumulated fluid in the chest cavity (such as hemopneumothorax, empyema, and pleural effusion), promote lung re-expansion, relieve dyspnea, and prevent infection complications. Traditional drainage systems usually include a drainage tube, a negative pressure source (such as a water seal bottle or an electric negative pressure pump), and a fluid collection container. The core principle is to remove the accumulated fluid from the chest cavity through continuous negative pressure suction.

[0003] For example, a pleural surgery anti-blocking drainage device (Chinese patent application No. CN202310088852.X) uses an anti-blocking box, a fixed frame, a connecting plate, a fixed block, a fixed plate, a positioning rod, a threaded column, a first spring, and a threaded cylinder in a cooperative arrangement. Liquid enters the inside of the anti-blocking box, and the filter screen filters impurities in the liquid. The fixed frame drives the filter screen to move, thereby facilitating the filtration of chest cavity drainage liquid and preventing the pipe body from being blocked. The filter screen can also be easily disassembled for timely cleaning of impurities.

[0004] Drainage devices such as the above type can reduce the risk of blockage through filtration, but there are still some deficiencies in actual use: Firstly, when the filter screen is blocked, it cannot be cleaned in time. This can reduce the drainage efficiency and even interrupt the drainage process, affecting the treatment effect of the patient. In particular, in emergency or critical situations, filter screen blockage can have serious consequences.

[0005] Secondly, sudden unblocking of a blocked drainage tube can cause a dramatic change in chest cavity pressure. Specifically, when the drainage tube is partially blocked by blood clots, fibrin, or viscous secretions, continuous operation of the negative pressure source can cause high negative pressure to accumulate near the blockage point (near the negative pressure source side). Once the blockage is suddenly removed, the high negative pressure is released into the chest cavity, which can cause alveolar rupture, pulmonary hemorrhage, or pneumothorax, especially to the fragile lung tissue after surgery. SUMMARY

[0006] The purpose of the present application is to provide a pleural effusion drainage device that can automatically monitor filter screen blockage and initiate flushing, while also preventing sudden changes in chest cavity pressure and ensuring the smoothness of the drainage channel through a linkage pressure relief and filter screen expansion mechanism.

[0007] The technical solutions adopted by the present application are as follows: A pleural effusion drainage device includes a drainage tube and a delivery tube. The pulverizing mechanism is arranged in the drainage tube and used for pulverizing impurities in the effusion. The filtering mechanism is arranged at the end of the drainage tube and used for blocking large impurities in the effusion. The cleaning mechanism is arranged on the pulverizing mechanism and used for cleaning the filtering mechanism. The auxiliary mechanism is arranged in the conveying pipe. The auxiliary mechanism comprises pressure measuring parts which are arranged on the conveying pipe in a ring shape, and pressure relief parts are arranged on both sides of the pressure measuring parts. When the filtering mechanism is blocked, the negative pressure in the conveying pipe increases, the pressure measuring parts are displaced to drive the pressure relief parts to operate and release pressure.

[0008] In a preferred embodiment, the pulverizing mechanism comprises a ring-shaped sliding block which is slidingly connected to the inner wall of the drainage tube.

[0009] In a preferred embodiment, the filtering mechanism comprises a containing groove which is arranged at the end of the drainage tube.

[0010] In a preferred embodiment, the filter screen is made of elastic material and is interlaced.

[0011] In a preferred embodiment, the cleaning mechanism comprises a hollow pipe which is fixedly connected to the ring and communicates with the cavity on the ring.

[0012] In a preferred scheme, the pressure measuring part comprises a hollow cylinder fixedly inlaid on the conveying pipe, a T-shaped rod slidingly inserted on the hollow cylinder, a piston plate fixedly sleeved on one end of the T-shaped rod in the hollow cylinder, a threaded groove formed on the other end of the T-shaped rod, and a rotating disc threadedly connected with the threaded groove, one side of the rotating disc being rotatably connected with a mounting ring, a compression spring fixedly connected between the mounting ring and the hollow cylinder, and a pressure applying piece fixedly connected on one of the T-shaped rods, a contact switch arranged below the pressure applying piece and fixedly mounted on the conveying pipe.

[0013] In a preferred scheme, the pressure relief part comprises two annular air grooves, the two annular air grooves being formed on the conveying pipe and located on both sides of the hollow cylinder, air permeable holes annularly distributed on the inner side of the annular air groove, microporous filter membranes fixedly connected with the inner wall of the air permeable holes, ventilation grooves formed on the outer side of the annular air groove and dustproof nets fixedly connected with the inner wall of the ventilation grooves, a sealing ring slidingly connected in the annular air groove, a first magnet fixedly connected on one side of the sealing ring, a second magnet fixedly connected with the inner wall of the annular air groove, and two traction ropes fixedly connected on one end of the T-shaped rod and penetrating into the annular air groove and fixedly connected with the first magnet on the other end.

[0014] In a preferred scheme, the water conveying part comprises a water pump fixedly mounted on the conveying pipe, a drainage pipe fixedly communicated with the water pump at the water outlet end of the water pump, and hollow shells fixedly connected with both ends of the drainage pipe and communicated with shunt pipes.

[0015] In a preferred scheme, the squeezing part comprises a chute formed on the inner wall of the conveying pipe, a moving block slidingly connected in the chute, an L-shaped rod fixedly connected on the moving block, and a squeezing ring fixedly connected on the other end of the L-shaped rod.

[0016] In a preferred scheme, the linkage part comprises a first circular rod rotatably connected with the conveying pipe through a sealing bearing and penetrating to the outer side of the conveying pipe at both ends, a gear mounted on the first circular rod, a rack fixedly connected on the L-shaped rod, a second circular rod rotatably connected with the hollow shell through a sealing bearing, and a water wheel mounted on the second circular rod.

[0017] The technical effects achieved by the present application are as follows: The present application monitors the change of negative pressure in the pipe in real time by setting a pressure measuring part on the conveying pipe. When the filter screen is blocked, the negative pressure in the conveying pipe rises, prompting the piston plate of the pressure measuring part to move, and then triggering the contact switch through the pressure applying part, so as to automatically start the water pump to convey physiological saline to the cleaning mechanism. The physiological saline enters the scraper through the annular groove, the hollow ring and the annular cavity, and is sprayed out of the water outlet hole, so as to wash the filter screen under high pressure. In addition, the filter screen expands and contacts the scraper, and the impurities adhered to the side surface of the filter screen are scraped off by the scraper, and the cleaning efficiency of the filter screen is further improved by cooperating with the saline washing. The process does not need manual intervention, realizes automatic response and cleaning in the blocked state, effectively avoids the interruption of drainage caused by the blockage of the filter screen, guarantees the continuity of treatment, and greatly improves the safety and reliability of clinical use.

[0018] The present application is used in cooperation with the pressure measuring part and the pressure relief part. When the pressure measuring part senses the rise of negative pressure, the sealing ring is moved by the traction rope, so that the air permeable hole is opened, the external air slowly enters the conveying pipe through the micropore filter membrane, and a progressive pressure buffer is formed. The design avoids the sudden change of the pressure in the chest, buffers the negative pressure impact when the blockage is removed, significantly reduces the damage risk to the fragile lung tissue after the operation, and improves the safety guarantee of the patient.

[0019] The present application integrates a linkage type filter screen expansion structure on the basis of the crushing mechanism. When the washing is started, the water flow drives the water wheel to drive the gear rack transmission, prompts the extrusion ring to move towards the filter screen and apply extrusion force, so that the elastic filter screen is locally stretched and the filter hole is expanded, and the impurities are easily removed. At the same time, the crushing knife driven by the motor can pre-crush large blood clots, fibrin and other impurities, reduce the volume, and reduce the blockage probability. The crushing and expansion washing cooperate to form an integrated mechanism of “prevention-drainage-cleaning”, which greatly improves the anti-blocking ability and drainage efficiency of the device, prolongs the continuous working time, and reduces the maintenance frequency.

[0020] The drainage tube and the conveying pipe of the present application can be quickly connected in various ways such as threads and clamps, and the mounting frame and the containing groove of the filtering mechanism adopt a sliding plug-in structure, which is convenient for medical staff to quickly disassemble and replace. The pre-tightening force of the pressure spring of the pressure measuring part can be flexibly adjusted by the rotating disc, which is suitable for different power negative pressure requirements. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic diagram of the whole present application; Figure 2 is a disassembled schematic diagram of the drainage tube and the conveying pipe of the present application; Figure 3 is a right side view of the present application Figure 2 Figure 4 is a disassembled schematic diagram of the drainage tube and the filtering mechanism of the present application; Figure 5 ​is the internal structure diagram of the drainage tube of the present application; Figure 6 is the structure diagram of the scraper of the present application; Figure 7 is the internal structure diagram of the conveying tube of the present application; Figure 8 is the exploded view of the partial structure of the conveying tube and the auxiliary mechanism of the present application Figure 9 is the enlarged view of the part B shown in the present application Figure 7 Figure 10 is the enlarged view of the part A shown in the present application Figure 3 Figure 11 is the structure diagram of the pressure measuring part of the present application; Figure 12 is the sectional view of the present application Figure 10 Figure 13 is the partial structure diagram of the auxiliary mechanism of the present application; Figure 14 is the right view of the present application Figure 12 Figure 15 is the enlarged view of the part C shown in the present application Figure 14

[0022] In the drawings, the components represented by each reference numeral are listed as follows: 1, drainage tube; 2, conveying tube; 3, crushing mechanism; 4, filtering mechanism; 5, cleaning mechanism; 6, auxiliary mechanism; 31, annular slider; 32, circular ring; 33, crushing knife; 34, motor; 41, accommodating groove; 42, mounting frame; 43, filter screen; 51, hollow tube; 52, scraper; 53, annular groove; 54, water inlet head; 55, hollow ring; 61, pressure measuring part; 62, pressure relief part; 63, water conveying part; 64, mesh extruding part; 65, linkage part; 611, hollow cylinder; 612, T-shaped rod; 613, piston plate; 614, rotating disc; 615, mounting ring; 616, compression spring; 617, pressure applying member; 618, contact switch; 621, annular air groove; 622, air permeable hole; 623, microporous filter membrane; 624, ventilation groove; 625, sealing ring; 626, first magnet; 627, second magnet; 628, traction rope; 631, water pump; 632, drainage pipeline; 633, hollow shell; 634, shunt tube; ​​​​​641, chute; 642, moving block; 643, L-shaped rod; 644, extrusion ring; 651, first round rod; 652, gear; 653, rack; 654, second round rod; 655, water wheel. DETAILED DESCRIPTION

[0023] In order to make the above objectives, characteristics and advantages of the present application more apparent, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0024] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without the specific details given herein. In other instances, well-known methods have not been described in detail in order to avoid unnecessarily obscuring the present application.

[0025] 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 present 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.

[0026] Thirdly, the present application is described in detail in conjunction with the schematic diagram. In the detailed description of the embodiments of the present application, the cross-sectional view of the device structure is partially enlarged without the general proportion for the convenience of description, 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 manufacture.

[0027] Please refer to the accompanying Figures 1 to 6 As shown in the accompanying drawings, the embodiment provides a thoracic surgery effusion drainage device, which comprises a drainage tube 1 and a conveying pipe 2; A crushing mechanism 3 is arranged in the drainage tube 1, which is used for crushing impurities in the effusion; A filtering mechanism 4 is arranged at the end of the drainage tube 1, which is used for blocking large impurities in the effusion; A cleaning mechanism 5 is arranged on the crushing mechanism 3, which is used for cleaning the filtering mechanism 4; An auxiliary mechanism 6 is arranged in the conveying pipe 2; The auxiliary mechanism 6 comprises a pressure measuring part 61, a plurality of pressure measuring parts 61 are arranged in a ring shape on the conveying pipe 2, pressure relief parts 62 are arranged on both sides of the pressure measuring part 61, a water conveying part 63 is arranged on the conveying pipe 2, a squeezing net part 64 is arranged in the conveying pipe 2, and a linkage part 65 is arranged on the water conveying part 63; When the filter mechanism 4 is blocked, the negative pressure in the delivery pipe 2 increases, the pressure measuring portion 61 is displaced, and the pressure relief portion 62 is operated to relieve pressure; at the same time, the water delivery portion 63 is started to deliver water to the cleaning mechanism 5 to flush the filter mechanism 4; when the water delivery portion 63 is operated, the driving linkage portion 65 is operated, the linkage portion 65 is operated to move the extrusion net portion 64 to the filter mechanism 4, and the filter holes of the filter mechanism 4 are expanded.

[0028] In this embodiment, in use, first, the filter mechanism 4 is installed at the end of the drainage tube 1, and then the drainage tube 1 is connected with the delivery pipe 2. The end of the drainage tube 1 away from the delivery pipe 2 is connected with a disposable puncture needle, the end of the delivery pipe 2 away from the drainage tube 1 is connected with an external collection tank, and the collection tank should be provided with a corresponding negative pressure device. Then, the puncture needle is inserted into the chest cavity of the patient, and the negative pressure device is started to extract the effusion.

[0029] It should be noted that the drainage tube 1 and the delivery pipe 2 can be fixed by thread connection, clamp connection, flange connection or sleeve connection, which is not limited here; in addition, the end of the drainage tube 1 away from the delivery pipe 2 is provided with a one-way valve (not shown in the figure), and the design of the one-way valve ensures the one-way flow of the drainage process, effectively avoiding the backflow phenomenon that may occur during the extraction of the effusion, which not only improves the drainage efficiency, but also further guarantees the safety of the patient. The one-way valve is made of high-quality materials and has good sealing performance and durability, and can maintain stable performance in long-term use.

[0030] Secondly, please refer again to Figure 5 The crushing mechanism 3 includes an annular sliding block 31, the annular sliding block 31 is slidingly connected to the inner wall of the drainage tube 1, the inner wall of the annular sliding block 31 is fixedly connected with a circular ring 32, the circular ring 32 is provided with a cavity, the inner wall of the circular ring 32 is arranged in a curve driving array and is connected with a crushing knife 33, and the inner wall of the drainage tube 1 is fixedly installed with a motor 34.

[0031] In this embodiment, during the treatment of the effusion in the chest cavity, the effusion passes through the puncture needle and the drainage tube 1, and then is sucked into the collection tank through the delivery pipe 2. During this process of extracting the effusion, the motor 34 is started to drive the circular ring 32 to rotate. The rotation of the circular ring 32 drives the crushing knife 33 to rotate around the central axis of the drainage tube 1, and the impurities in the effusion are crushed. These impurities may include blood clots or fibrin blockages. By crushing these impurities, their volume can be significantly reduced. The purpose of this is to increase the flow rate of the effusion, so as to avoid the accumulation or blockage of impurities with too large volume in the subsequent pipeline. In addition, the circular ring 32 is connected in the drainage tube 1 through the rotation of the annular sliding block 31, and this design can ensure the smooth rotation of the circular ring 32, thereby ensuring the efficient and stable operation of the whole system.

[0032] It should be noted that the motor 34 adopts a hollow shaft motor, which at least includes a shell, a stator, a hollow shaft rotor and a plurality of sealing elements, the shell is fixed in the inside of the drainage tube 1, the stator is fixed in the inside of the shell, the stator is provided with a winding, the hollow shaft is assembled in the inside of the rotor, and the plurality of sealing elements are arranged between the shell and the hollow shaft rotor. In this embodiment, the hollow shaft rotor and the circular ring 32 are fixedly connected. Specifically, the hollow shaft motor is a mature application at present. In this embodiment, the hollow shaft motor is preferably a brushless hollow shaft motor with a brand of Cangxingda, and the specific model is adjusted according to the relevant size requirements.

[0033] Secondly, please refer to Figure 3 and Figure 4 , the filter mechanism 4 includes a containing groove 41, the containing groove 41 is opened in the end of the drainage tube 1, the containing groove 41 is slidably connected with the mounting frame 42, the inner wall of the mounting frame 42 is fixedly connected with the filter screen 43, the filter screen 43 is staggered and woven with elastic material, the mounting frame 42 is embedded in the containing groove 41, and the drainage tube 1 and the conveying pipe 2 are connected together to fix the filter mechanism 4.

[0034] In this embodiment, a filter mechanism 4 is installed at the end of the drainage tube 1. The filter mechanism 4 is provided with a filter screen 43, which mainly plays a role in effectively filtering the effusion generated in the drainage process. In this way, large impurities in the effusion can be intercepted, thereby avoiding the impurities from entering the subsequent pipeline and preventing pipeline operation failure caused by impurity accumulation or blockage. In order to ensure the stability and reliability of the filter screen 43, it is fixedly connected to a special mounting frame 42. The mounting frame 42 is embedded in the containing groove 41 of the drainage tube 1, so that the entire filter mechanism 4 is stable and easy to disassemble. After use, in order to maintain the filtering effect and ensure the normal operation of the equipment, the drainage tube 1 and the conveying pipe 2 can be disconnected. At this time, the filter mechanism 4 can be conveniently taken out for overall cleaning or replacement of the new filter screen 43. Such design not only ensures the filtering effect, but also significantly simplifies the maintenance and replacement process, improves the use efficiency and service life of the equipment.

[0035] Secondly, please refer to Figure 3 , Figure 5 and Figure 6 , the cleaning mechanism 5 includes a hollow pipe 51, the hollow pipe 51 is fixedly connected to the circular ring 32 and communicates with the cavity on the circular ring 32, the other end of the hollow pipe 51 is fixedly connected with a scraper 52, the scraper 52 is provided with a cavity, and a water outlet hole is arranged at the right end of the cavity, the drainage tube 1 is also provided with an annular groove 53, the annular groove 53 is provided with a water inlet head 54, the outer circle of the circular ring 32 is fixedly embedded with a hollow ring 55, and the hollow ring 55 is rotatably connected with the annular groove 53 through a sealing bearing.

[0036] Please refer againFigures 9 to 12 The pressure measuring part 61 comprises a hollow cylinder 611 fixedly embedded on the delivery tube 2, a T-shaped rod 612 slidingly inserted into the hollow cylinder 611, a piston plate 613 fixedly sleeved on one end of the T-shaped rod 612 inside the hollow cylinder 611, a threaded groove formed on the other end of the T-shaped rod 612, a rotating disc 614 threadedly connected to the threaded groove, an installation ring 615 rotatably connected to one side of the rotating disc 614, a compression spring 616 fixedly connected between the installation ring 615 and the hollow cylinder 611, and a pressure applying part 617 fixedly connected to one of the T-shaped rods 612, a contact switch 618 arranged below the pressure applying part 617 and fixedly installed on the delivery tube 2.

[0037] In this embodiment, when the filter screen 43 is blocked by impurities, the negative pressure device continuously operates to perform the suction operation; the pressure on the side close to the negative pressure source continuously decreases (the negative pressure increases); and the pressure on the side close to the patient's chest cavity remains at a level close to the pressure in the chest cavity, that is, the negative pressure in the delivery tube 2 increases. With the increase of the negative pressure, the piston plate 613 will move along the hollow cylinder 611 towards the central axis of the delivery tube 2, the movement of the piston plate 613 drives the T-shaped rod 612 to move, the movement of the T-shaped rod 612 drives the rotating disc 614 and the installation ring 615 to synchronously move and compress the compression spring 616.

[0038] The rotating disc 614 is threadedly connected to one end of the T-shaped rod 612, and rotating the rotating disc 614 can lift or lower the installation ring 615 along the T-shaped rod 612, so as to adjust the pre-tightening force of the compression spring 616. When the negative pressure device has a large power to extract the hydrops, the installation ring 615 can be adjusted downward to increase the pre-tightening force of the compression spring 616, and the sensitivity of the T-shaped rod 612 decreases, so that the piston plate 613 will not move until the negative pressure in the delivery tube 2 is large; on the contrary, when the negative pressure device has a small power to extract the hydrops, the installation ring 615 can be adjusted upward to decrease the pre-tightening force of the compression spring 616, and the sensitivity of the T-shaped rod 612 increases, so that the piston plate 613 can move when the negative pressure in the delivery tube 2 is small. In this way, the pressure measuring part 61 can adapt to different working environments of different negative pressures (for example, as shown in Figure 11 ).

[0039] Please refer to Figure 2 , Figure 3 , Figure 8 , Figure 13 and Figure 14The water delivery part 63 comprises a water pump 631 fixedly installed on the delivery pipe 2, a drain pipe 632 fixedly connected to the water pump 631, hollow shells 633 fixedly connected to two ends of the drain pipe 632, and a shunt pipe 634 communicated with the hollow shells 633. In addition, the water pump 631 is fixedly connected to the delivery pipe 2 by bolts, and the drain pipe 632 is a hard pipe, which provides support for the hollow shells 633.

[0040] In this embodiment, when one of the T-shaped rods 612 moves, the pressing member 617 is driven to move. After the pressing member 617 moves, it exerts pressure on the contact switch 618, and the water pump 631 is started (when the contact switch 618 is no longer pressed, the water pump 631 is delayed to stop). The water pump 631 is connected to an external water tank, and the water tank stores physiological saline. After the water pump 631 is started, the physiological saline is pumped to flow into the hollow shells 633 through the drain pipe 632, then flows into the annular groove 53 through the shunt pipe 634, and then flows into the cavity of the circular ring 32 from the annular groove 53, and then flows into the cavity of the scraper 52 along the hollow pipe 51, and finally is sprayed from the scraper 52 to wash the filter screen 43. During the washing process, the physiological saline forms fine water flow under high pressure, and the water flow can penetrate into each fine pore of the filter screen 43 to effectively remove impurities and residues attached to the surface of the filter screen 43. As the washing process continues, the filter screen 43 gradually restores its original permeability, thereby ensuring smooth operation of the drainage device. At the same time, the annular sliding block 31 slowly rotates under the drive of the motor 34, which can ensure that the filter screen 43 is thoroughly cleaned. The entire washing process is automatic and does not require manual intervention, which significantly improves the convenience and cleaning efficiency.

[0041] It should be noted that the pressing member 617 comprises a circular plate and a vertical rod, the circular plate is fixedly connected to the T-shaped rod 612 by a support rod, and the vertical rod is fixedly connected to the circular plate. When the T-shaped rod 612 drives the vertical rod to move a small distance, the vertical rod contacts the contact switch 618. As the T-shaped rod 612 continuously drives the circular plate to move downward, the vertical rod is deformed under pressure. In this way, once the blockage occurs, the water pump 631 can be immediately started to deliver physiological saline to wash the filter screen 43.

[0042] The contact switch 618 and the water pump 631 are electrically connected. The specific structure and working principle of the contact switch 618 are known in the art, and will not be described in detail here.

[0043] In addition, the shunt pipe 634 is a flexible hose, and the shunt pipe 634 and the water inlet head 54 can be fixed by thread connection, clamp connection, flange connection or sleeve connection, which is not limited here.

[0044] Please refer to Figure 7 , Figure 8 , Figure 13 and Figure 14 , the extrusion net part 64 includes a sliding groove 641 which is opened in the inner wall of the conveying pipe 2, and a moving block 642 is slidingly connected in the sliding groove 641, the moving block 642 is fixedly connected with an L-shaped rod 643, and the other end of the L-shaped rod 643 is fixedly connected with an extrusion ring 644. When the drainage pipe 1 and the conveying pipe 2 are disassembled, the moving block 642 can move out along the sliding groove 641, which is convenient for assembly or disassembly.

[0045] In this embodiment, in the initial state, one side of the extrusion ring 644 is closely attached to the filter screen 43. When the filter screen 43 is blocked, the extrusion net part 64 moves under the drive of the linkage part 65 and applies extrusion force to the filter screen 43, so as to make the filter screen 43 deform. With the cooperation of the sliding groove 641 and the moving block 642, the functions of guiding and limiting can be achieved, so as to ensure the stability of the moving process of the extrusion ring 644.

[0046] Please refer to Figure 13 and Figure 14 , the linkage part 65 includes a first circular rod 651 which is rotatably connected to the conveying pipe 2 through a sealing bearing, and the two ends of the first circular rod 651 respectively penetrate to the outside of the conveying pipe 2, a gear 652 is installed on the first circular rod 651, a rack 653 is fixedly connected to the L-shaped rod 643, a second circular rod 654 is rotatably connected to the hollow shell 633 through a sealing bearing, and a water wheel 655 is installed on the second circular rod 654. In addition, the first circular rod 651 and the second circular rod 654 are clamped and fixed by bolts (as shown in Figure 15 ).

[0047] In this embodiment, when the physiological saline flows along the hollow shell 633, it will contact the water wheel 655, and due to the power of the water flow, the water wheel 655 starts to rotate. The rotation of the water wheel 655 drives the rotation of the second circular rod 654, and the rotation of the second circular rod 654 drives the rotation of the first circular rod 651 and the gear 652. The gear 652 meshes with the rack 653 to drive the straight line movement of the rack 653, and the movement of the rack 653 is further transmitted to the L-shaped rod 643 to make it move. The movement of the L-shaped rod 643 drives the movement of the extrusion ring 644 towards the filter screen 43. The movement of the extrusion ring 644 applies pressure to the filter screen 43, and through this extrusion action, the local area of the filter screen 43 is elongated, so that the pore size is increased. The increase of the pore size helps the impurities to fall off from the filter screen 43 more easily, thereby effectively preventing the blockage of the filter screen 43 and ensuring the smooth operation of the filtering system.

[0048] In addition, the filter screen 43 expands and contacts the scraper 52, and the impurities adhered to the side of the filter screen 43 are scraped off by the scraper 52, and then the filter screen 43 is washed with the saline. This process not only improves the cleaning efficiency of the filter screen 43, but also effectively prolongs the service life of the filter screen 43, and ensures the overall performance of the drainage device.

[0049] It should be noted that the water wheel 655 is provided with a through hole, when the moving block 642 moves to the maximum stroke along the sliding groove 641, the rack 653 can no longer move, and the first circular rod 651 and the gear 652 can no longer rotate, and the physiological saline can pass through the through hole on the water wheel 655 without driving the water wheel 655 to rotate.

[0050] When there is no physiological saline flow, the filter screen 43 drives the screen extruding part 64 to reset under the action of the elastic force.

[0051] Please refer to Figure 9 and Figure 11 , the pressure relief part 62 includes an annular air groove 621, both of which are provided on the conveying pipe 2 and located on both sides of the hollow cylinder 611, the inner side of the annular air groove 621 is provided with a gas permeable hole 622 in a ring shape, the inner wall of the gas permeable hole 622 is fixedly connected with a microporous filter membrane 623, the outer side of the annular air groove 621 is provided with a ventilation groove 624, and the inner wall of the ventilation groove 624 is fixedly connected with a dust screen, the annular air groove 621 is slidably connected with a sealing ring 625, one side of the sealing ring 625 is fixedly connected with a first magnet 626, the inner wall of the annular air groove 621 is fixedly connected with a second magnet 627, one end of the T-shaped rod 612 is fixedly connected with two traction ropes 628, and the other end of the traction rope 628 penetrates into the annular air groove 621 and is fixedly connected with the first magnet 626.

[0052] In this embodiment, in the initial state, the annular air groove 621 is always in communication with the outside air through the ventilation groove 624, and the ventilation groove 624 is provided with a dust screen inside, which blocks the impurities from the outside. At the same time, the sealing ring 625 seals the gas permeable hole 622, so that the air in the annular air groove 621 cannot enter the conveying pipe 2. When the T-shaped rod 612 moves, it pulls the traction rope 628, so that the two sealing rings 625 approach each other. After that, the gas permeable hole 622 loses the sealing effect of the sealing ring 625, and the air in the annular air groove 621 enters the conveying pipe 2 through the gas permeable hole 622, so that the negative pressure in the conveying pipe 2 is reduced, preventing the negative pressure in the conveying pipe 2 from continuously rising, avoiding the sudden unblocking of the drainage pipe 1 which may cause the pressure in the thoracic cavity to fluctuate sharply, and thus causing a series of clinical risks.

[0053] It should be noted that: due to the mutual repulsion between the first magnet 626 and the second magnet 627, the sealing ring 625 is positioned at the position of the air hole 622, thereby effectively realizing the sealing function of the air hole 622. This design ensures that the sealing ring 625 can remain stable when subjected to magnetic force, ensuring that the sealing performance of the entire system reaches the best state.

[0054] The working principle of the present application is: In the process of treating intrathoracic effusion, the effusion is sucked out through the puncture needle, the drainage tube 1 and the conveying tube 2, and the impurities in the effusion are crushed by the crushing mechanism 3. During the process of draining the intrathoracic effusion, if the filter screen 43 of the filtering mechanism 4 is blocked by impurities, causing the negative pressure in the conveying tube 2 to increase, the piston plate 613 in the pressure measuring part 61 moves under the action of the negative pressure, drives the T-shaped rod 612 to move, compresses the compression spring 616 and triggers the contact switch 618, thereby starting the water pump 631 to supply physiological saline to the water conveying part 63. The water flows through the shunt pipe 634 into the annular groove 53, the cavity of the circular ring 32 and the scraper plate 52 of the cleaning mechanism 5, is sprayed out of the water outlet hole to flush the filter screen 43, and at the same time, the water flow drives the water wheel 655 and the gear 652 rack 653 mechanism of the linkage part 65, pushes the extrusion ring 644 of the screen extruding part 64 to move towards the filter screen 43, so that the filter screen 43 is expanded under pressure and the filter hole is enlarged, facilitating the falling of impurities, and cooperating with the rotation of the scraper plate 52 to realize efficient cleaning. At the same time, the T-shaped rod 612 pulls the sealing ring 625 of the pressure relief part 62 through the pull rope 628, opens the air hole 622 to make the outside air enter the conveying tube 2 through the microporous filter membrane 623, realizes safe pressure relief, prevents the risk of sudden pressure change, and the whole process is automatically responded and cooperated, effectively guarantees the smooth drainage and patient safety.

[0055] The above is only the preferred embodiment of the present application, and it should be noted that for ordinary skilled persons in the art, without departing from the principles of the present application, a number of 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, such as without special description and limitation, are implemented according to the conventional means in the art.

Claims

1. A thoracic surgical fluid collection drainage device, characterized by: The drainage tube and the conveying pipe are included; The crushing mechanism is arranged in the drainage tube and is used for crushing impurities in the effusion; The filtering mechanism is arranged at the end of the drainage tube and is used for blocking large impurities in the effusion; The cleaning mechanism is arranged on the crushing mechanism and is used for cleaning the filtering mechanism; The auxiliary mechanism is arranged in the conveying pipe; The auxiliary mechanism includes the pressure measuring part, a plurality of pressure measuring parts are arranged on the conveying pipe in a ring shape, both sides of the pressure measuring part are provided with the pressure relief part, the conveying pipe is provided with the water conveying part, the conveying pipe is provided with the squeezing net part, the water conveying part is provided with the linkage part; When the filtering mechanism is blocked, the negative pressure in the conveying pipe increases, the pressure measuring part is displaced to drive the pressure relief part to operate to release the pressure; at the same time, the water conveying part is started to convey water to the cleaning mechanism to flush the filtering mechanism; when the water conveying part operates, the linkage part is driven to operate, the linkage part operates to drive the squeezing net part to move to the filtering mechanism to expand the filter hole of the filtering mechanism.

2. A thoracic surgical fluid drainage device according to claim 1, wherein: The crushing mechanism includes the ring-shaped sliding block, the inner wall of the ring-shaped sliding block is slidingly connected with the inner wall of the drainage tube, the inner wall of the ring-shaped sliding block is fixedly connected with the circular ring, the circular ring is provided with the cavity, and the inner wall of the circular ring is connected with the crushing knife in a curve driving array.

3. A thoracic surgical fluid drainage device according to claim 1, wherein: The filtering mechanism includes the accommodating groove, the accommodating groove is arranged at the end of the drainage tube, the accommodating groove is slidingly connected with the mounting frame, and the inner wall of the mounting frame is fixedly connected with the filter screen.

4. A thoracic surgical fluid drainage device according to claim 3, wherein: The filter screen is made of elastic materials and is staggered and woven.

5. A thoracic surgical fluid drainage device according to claim 2, wherein: The cleaning mechanism includes the hollow pipe, the hollow pipe is fixedly connected with the circular ring and communicates with the cavity of the circular ring, the other end of the hollow pipe is fixedly connected with the scraper, the cavity is arranged on the scraper, the water outlet hole is arranged at the right end of the cavity in an array, the ring-shaped groove is arranged on the drainage tube, the water inlet head is arranged at the ring-shaped groove, the outer ring of the circular ring is fixedly embedded with the hollow ring, and the hollow ring is rotatably connected with the ring-shaped groove through the sealing bearing.

6. A thoracic surgical fluid drainage device according to claim 1, wherein: The pressure measuring part includes the hollow cylinder, the hollow cylinder is fixedly embedded on the conveying pipe, the T-shaped rod is slidingly connected with the hollow cylinder, the one end of the T-shaped rod in the hollow cylinder is fixedly sleeved with the piston plate, the other end of the T-shaped rod is provided with the threaded groove, and the threaded groove is threadedly connected with the rotating disc, one side of the rotating disc is rotatably connected with the mounting ring, the mounting ring and the hollow cylinder are fixedly connected with the compression spring, one of the T-shaped rods is further fixedly connected with the pressure applying part, the lower side of the pressure applying part is provided with the contact switch, and the contact switch is fixedly installed on the conveying pipe.

7. A thoracic surgical fluid drainage device according to claim 6, wherein: The pressure relief part includes the ring-shaped air groove, the two ring-shaped air grooves are arranged on the conveying pipe and are located at both sides of the hollow cylinder, the inner side of the ring-shaped air groove is arranged with the air permeable hole in a ring shape, the inner wall of the air permeable hole is fixedly connected with the microporous filter membrane, the outer side of the ring-shaped air groove is provided with the ventilation groove, the inner wall of the ventilation groove is fixedly connected with the dustproof net, the ring-shaped air groove is slidingly connected with the sealing ring, one side of the sealing ring is fixedly connected with the first magnet, the inner wall of the ring-shaped air groove is fixedly connected with the second magnet, one end of the T-shaped rod is fixedly connected with the two traction ropes, and the other end of the traction rope penetrates into the ring-shaped air groove and is fixedly connected with the first magnet.

8. A thoracic surgical fluid drainage device according to claim 1, wherein: The water delivery part comprises a water pump fixedly installed on the conveying pipe, a drainage pipe fixedly communicated with a drainage end of the water pump, hollow shells fixedly connected at two ends of the drainage pipe, and shunt pipes communicated with the hollow shells.

9. A thoracic surgical fluid drainage device according to claim 8, wherein: The net extruding part comprises a chute formed in an inner wall of the conveying pipe, a moving block slidingly connected in the chute, an L-shaped rod fixedly connected to the moving block, and an extruding ring fixedly connected to another end of the L-shaped rod.

10. A thoracic surgical fluid drainage device according to claim 9, wherein: The linkage part comprises a first circular rod rotatably connected to the conveying pipe through a sealing bearing, two ends of the first circular rod penetrating to the outside of the conveying pipe, a gear installed on the first circular rod, a gear rack fixedly connected to the L-shaped rod, a second circular rod rotatably connected to the hollow shell through a sealing bearing, and a water wheel installed on the second circular rod.

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