Extracorporeal circulation pipeline of blood purification treatment device

Abstract

The invention relates to the field of blood purification treatment, and discloses an extracorporeal circulation pipeline of a blood purification treatment device.The extracorporeal circulation pipeline comprises end plates, an inlet pipe and an outlet pipe, the two end plates are fixedly connected through a first connecting rod, the inlet pipe fixedly penetrates through one end plate, and the outlet pipe fixedly penetrates through the other end plate; a plurality of switching tubes are arranged between the two end plates through a switching structure, and the switching tubes are switched to be communicated with the inlet tube and the outlet tube respectively by directly rotating a switching sleeve on the switching structure, so that time and labor are saved during operation, the working difficulty is reduced, smooth operation of extracorporeal blood circulation work is guaranteed, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of blood purification treatment, and in particular to an extracorporeal circulation pipeline of a blood purification treatment device. Background Art

[0002] Blood purification treatment is to remove waste, toxins, abnormal substances, etc. in the blood through technical means to achieve the purpose of purifying the blood; during blood purification medical treatment, an extracorporeal circulation pipeline is used;

[0003] In the prior art, for the extracorporeal circulation pipeline, through the designed fixed pipe, fixed clamp block, roller screw rod and knob, it is convenient for the extracorporeal circulation venous pipeline used in the blood purification treatment device to drive the roller screw rod to rotate through the knob during use, and then the shunt pipe is clamped and fixed to the shunt valve, so as to ensure that the pipeline body can work through the shunt pipe when blocked, avoid causing secondary harm to the patient, reduce the psychological burden of the patient, and greatly improve the safety and convenience of the venous pipeline during use;

[0004] However, in the actual treatment process, when both the pipeline body and the shunt pipe are blocked, it is necessary to stop the blood treatment work, clean or replace the pipeline body and the shunt pipe before continuing the blood treatment work, which not only increases the work difficulty but also reduces the work efficiency. Summary of the Invention

[0005] In order to solve the problems raised in the above background art, the present invention provides an extracorporeal circulation pipeline of a blood purification treatment device.

[0006] The extracorporeal circulation pipeline of a blood purification treatment device provided by the present invention adopts the following technical solutions:

[0007] An extracorporeal circulation pipeline of a blood purification treatment device, including end plates, an inlet pipe and an outlet pipe. The two end plates are fixedly connected by a first connecting rod. The inlet pipe is fixedly passed through one of the end plates, and the outlet pipe is fixedly passed through the other end plate. A plurality of switching pipes are arranged between the two end plates through a switching structure;

[0008] The switching structure respectively rotatably sleeves two switching sleeves on the sides of the two end plates. A handle is installed between the two switching sleeves. A fixing rod is connected to the middle of the inner wall of the handle. One end of the fixing rod is connected with an intermediate sleeve. A plurality of mounting sleeves are arranged on the inner wall of the intermediate sleeve at equal angular intervals in a circumferential manner. The switching pipe movably passes through the mounting sleeve. An adjusting structure is arranged on the mounting sleeve. A communicating structure is arranged between the switching pipe and the inlet pipe and the outlet pipe. An anti-blocking structure is arranged on the inlet pipe. A driving structure is arranged on the handle.

[0009] Preferably, the connecting structure includes two connecting sleeves movably sleeved on the inlet pipe and the outlet pipe respectively. One end of each connecting sleeve is connected with an insertion pipe. First sealing rings are arranged on the inner wall of the switching pipe near both ends. A sealing structure is arranged in the connecting sleeve.

[0010] Preferably, the sealing structure includes an inner pipe connected to the inner wall of the connecting sleeve. A second sealing ring is arranged on the inner wall of the inlet pipe near the switching pipe. Sealing gaskets are arranged on both the first sealing ring and the second sealing ring. A pressing ring is arranged on one end of the inner pipe passing through the second sealing ring. The pressing ring presses against the sealing gasket of the second sealing ring. A plugging structure is arranged in the inlet pipe.

[0011] Preferably, the driving structure includes a grip rod movably sleeved on the fixed rod. End blocks are arranged at both ends of the grip rod. Two fixing bars are connected to the end blocks. Sliding grooves are opened on the inner wall of the handle near both ends. Driving blocks are slidably arranged in the sliding grooves. Each group of two fixing bars are respectively attached to the upper and lower side surfaces of the driving block. A driving groove is opened on the driving block. A positioning structure is arranged between the driving block and the end plate. One end of the fixing bar far from the end block fixedly passes through the through rod. The through rod movably passes through the driving groove. Two telescopic rods are connected between the grip rod and the handle. Springs are sleeved on the telescopic rods. The two ends of the springs are respectively connected to the handle and the grip rod. A second connecting rod is connected to the side surface of the driving block far from the handle. One end of the second connecting rod is connected to the driving ring. A fixing block is sleeved on the driving ring. The fixing block is fixedly connected to the connecting sleeve. A through hole for the driving ring to pass through is opened on the fixing block. An opening for the second connecting rod to pass through is opened on the through hole.

[0012] Preferably, the positioning structure includes positioning rods connected to the side surfaces of the two driving blocks away from each other. The positioning rods movably pass through the handle. A plurality of positioning grooves are opened on the end plate at equal angular intervals in the circumferential direction. One end of the positioning rod movably inserts into the positioning groove.

[0013] Preferably, the position adjusting structure includes a groove opened on the middle sleeve near the switching pipe. A rotating rod rotatably passes through the groove. A rotating sleeve is fixedly sleeved on the part of the rotating rod in the groove. Position adjusting pieces are installed at both ends of the rotating rod. The position adjusting pieces are attached to the side edge of the end face of the switching pipe. Torsion springs are connected between both ends of the rotating sleeve and the two side walls of the groove.

[0014] Preferably, the anti-blocking structure includes an outlet hole opened in the middle of the inner wall of the inlet pipe. A preparation cylinder communicating with the outlet hole is installed on the inlet pipe. A pushing structure is arranged in the preparation cylinder.

[0015] Preferably, the plugging structure includes a plugging sleeve arranged at the position of the outlet hole on the inner wall of the inlet pipe. A fourth connecting rod is connected to the right edge of the inner wall of the plugging sleeve. One end of the fourth connecting rod is connected to a cross bar, and a plugging block is connected to one end of the cross bar. The plugging block is in the shape of a frustum. A fixing hopper is arranged between the plugging block and the plugging sleeve on the inner wall of the inlet pipe. The cross bar passes through the fixing hopper. A third connecting rod is connected to the plugging block, and one end of the third connecting rod is connected to the pressing ring.

[0016] Preferably, the pushing structure includes a screw rod rotatably passing through the middle threaded groove at the bottom end of the preparation cylinder. A turntable is fixedly sleeved on the bottom end of the screw rod. A pushing disk tightly attached to the inner wall of the preparation cylinder is sleeved on the top end of the screw rod. A fixed pipe is communicated with the top end of the inner wall of the preparation cylinder. The fixed pipe fixedly passes through the corresponding end plate. A threaded sleeve is rotatably sleeved on one end of the fixed pipe by threads. The end of the threaded sleeve away from the fixed pipe is rotatably sleeved on a communicating pipe by threads. One end of the communicating pipe is communicated with a switching pipe, and the right section of the communicating pipe is inclined upward.

[0017] In summary, the present invention includes the following beneficial technical effects:

[0018] 1. The present invention is provided with multiple switching pipes through the switching structure. The switching sleeve on the switching structure can be directly rotated to switch the multiple switching pipes to be respectively communicated with the inlet pipe and the outlet pipe. This not only saves time and effort in operation, reduces the working difficulty, but also ensures the smooth progress of the extracorporeal blood circulation work and improves the working efficiency. And by setting the position adjustment structure, while facilitating the replacement of the switching pipe, the replaced switching pipe can be adjusted in position, so that both ends of the switching pipe can be smoothly communicated with the inlet pipe and the outlet pipe.

[0019] 2. The present invention is provided with a communicating structure, a driving structure, a positioning structure and a sealing structure. At the handle, through the driving structure, the communicating structure can be driven to communicate the inlet pipe with the switching pipe and the outlet pipe with the switching pipe, so as to form a complete extracorporeal circulation pipeline with the switched switching pipe. The operation is more convenient. And when communicating, the positioning structure can be synchronously driven to position the switched switching pipe on the end plate. At the same time, when communicating, the sealing structure is cooperated to ensure the sealing performance of the communication and avoid the problem of leakage.

[0020] 3. The present invention is provided with a plugging structure, an anti-blocking structure and a pushing structure. When switching the switching pipe, the plugging structure can be automatically driven to plug the inlet pipe, and the preparation cylinder on the anti-blocking structure is opened. In this way, the blood entering the inlet pipe can enter the preparation cylinder, so that the extracorporeal circulation work can continue during the process of switching the switching pipe, ensuring the working quality. After the switching pipe is communicated, the blood in the preparation cylinder is pushed into the switching pipe through the pushing structure to continue the blood purification treatment work. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of an extracorporeal circulation pipeline of a blood purification treatment device in an embodiment of the present invention;

[0022] Figure 2 It is in an embodiment of the present invention Figure 1 An enlarged view of the structure at point A;

[0023] Figure 3 It is in an embodiment of the present invention Figure 1 An enlarged view of the structure at point B;

[0024] Figure 4 It is a schematic structural diagram of the inlet pipe in an embodiment of the present invention;

[0025] Figure 5 It is a schematic structural diagram inside the inlet pipe in an embodiment of the present invention;

[0026] Figure 6 It is in an embodiment of the present invention Figure 5 An enlarged view of the structure at point C;

[0027] Figure 7 It is in an embodiment of the present invention Figure 5 An enlarged view of the structure at point D;

[0028] Figure 8 It is a schematic structural diagram of the internal structure of the preparation cylinder in an embodiment of the present invention;

[0029] Figure 9 It is a schematic structural diagram of the intermediate sleeve in an embodiment of the present invention.

[0030] Explanation of reference numerals: 1. End plate; 2. First connecting rod; 3. Switching sleeve; 4. Handle; 5. Fixed rod; 6. Intermediate sleeve; 7. Mounting sleeve; 8. Switching pipe; 9. Inlet pipe; 10. Outlet pipe; 11. Connecting sleeve; 12. Insertion pipe; 13. First sealing ring; 14. Inner pipe; 15. Second sealing ring; 16. Sealing gasket; 17. Tightening ring; 18. Holding rod; 19. Telescopic rod; 20. Spring; 21. End block; 22. Fixed strip; 23. Driving block; 24. Driving groove; 25. Second connecting rod; 26. Driving ring; 27. Through rod; 28. Positioning rod; 29. Positioning groove; 30. Fixed block; 31. Groove; 32. Rotating sleeve; 33. Rotating rod; 34. Adjusting piece; 35. Outlet hole; 36. Preparation cylinder; 37. Third connecting rod; 38. Plugging block; 39. Fixed hopper; 40. Cross bar; 41. Fourth connecting rod; 42. Plugging sleeve; 43. Screw; 44. Turntable; 45. Pushing plate; 46. Fixed pipe; 47. Connecting pipe; 48. Threaded sleeve; 49. Through hole. Detailed implementation manners

[0031] The following further elaborates on the present invention in conjunction with the attached Figures 1 - 9 drawings.

[0032] An extracorporeal circulation pipeline of a blood purification treatment device according to an embodiment of the present invention includes an end plate 1, an inlet pipe 9, and an outlet pipe 10. The two end plates 1 are fixedly connected by a first connecting rod 2. The inlet pipe 9 is fixedly passed through one of the end plates 1, and the outlet pipe 10 is fixedly passed through the other end plate 1. A plurality of switching pipes 8 are arranged between the two end plates 1 through a switching structure; the switching structure respectively rotatably sleeved with two switching sleeves 3 on the sides of the two end plates 1. A handle 4 is installed between the two switching sleeves 3. A fixing rod 5 is connected to the middle of the inner wall of the handle 4. One end of the fixing rod 5 is connected with an intermediate sleeve 6. A plurality of mounting sleeves 7 are arranged on the inner wall of the intermediate sleeve 6 at equal angular intervals in a circumferential direction. The switching pipe 8 movably passes through the mounting sleeve 7. An adjustment structure is arranged on the mounting sleeve 7. A communication structure is arranged between the switching pipe 8 and the inlet pipe 9 and the outlet pipe 10. An anti-blocking structure is arranged on the inlet pipe 9. A driving structure is arranged on the handle 4. When one of the switching pipes 8 is blocked, affecting the smooth progress of the blood purification work, the handle 4 can be used to drive the switching sleeve 3 to rotate on the end plate 1, so as to drive the switching pipe 8 to rotate, thereby switching the communication between the switching pipe 8 and the inlet pipe 9 and the outlet pipe 10. This not only saves time and effort in operation but also improves work efficiency.

[0033] See Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 7 and Figure 9 , The communication structure includes two communication sleeves 11 respectively movably sleeved on the inlet pipe 9 and the outlet pipe 10. One end of the communication sleeve 11 is connected with an insertion pipe 12. First sealing rings 13 are arranged at both ends close to the inner wall of the switching pipe 8. A sealing structure is arranged in the communication sleeve 11;

[0034] The sealing structure includes an inner tube 14 connected to the inner wall of the communication sleeve 11. A second sealing ring 15 is provided at a position on the inner wall of the inlet pipe 9 close to the switching pipe 8. Sealing gaskets 16 are provided on both the first sealing ring 13 and the second sealing ring 15. A pressing ring 17 is provided at one end of the inner tube 14 passing through the second sealing ring 15, and the pressing ring 17 presses against the sealing gasket 16 of the second sealing ring 15. A plugging structure is provided in the inlet pipe 9; The driving structure includes a grip rod 18 movably sleeved on the fixed rod 5. End blocks 21 are provided at both ends of the grip rod 18. Two fixing bars 22 are connected to the end blocks 21. Chute grooves are respectively opened at positions on the inner wall of the handle 4 close to both ends. Driving blocks 23 are slidably arranged in the chute grooves. Each group of two fixing bars 22 are respectively attached to the upper and lower side surfaces of the driving block 23. A driving groove 24 is opened on the driving block 23. A positioning structure is provided between the driving block 23 and the end plate 1. One end of the fixing bar 22 away from the end block 21 is fixedly passed through the through rod 27, and the through rod 27 movably passes through the driving groove 24. Two telescopic rods 19 are connected between the grip rod 18 and the handle 4. Springs 20 are sleeved on the telescopic rods 19, and both ends of the springs 20 are respectively connected to the handle 4 and the grip rod 18. A second connecting rod 25 is connected to the side surface of the driving block 23 away from the handle 4. One end of the second connecting rod 25 is connected to a driving ring 26. A fixing block 30 is sleeved on the driving ring 26, and the fixing block 30 is fixedly connected to the communication sleeve 11. A through hole 49 for the driving ring 26 to pass through is opened on the fixing block 30, and an opening for the second connecting rod 25 to pass through is opened on the through hole 49;

[0035] The positioning structure includes a positioning rod 28 connected to the mutually remote sides of two driving blocks 23. The positioning rod 28 movably passes through the handle 4. A plurality of positioning grooves 29 are equiangularly formed in a circumferential manner on the end plate 1. One end of the positioning rod 28 is movably inserted into the positioning groove 29. When switching the switching tube 8, directly hold the grip rod 18 at the handle 4, and pull the grip rod 18 to move in a direction away from the switching tube 8. The grip rod 18 drives the through rod 27 to slide in the driving groove 24 of the driving block 23. By using the extrusion of the through rod 27 against the groove wall of the driving groove 24, two driving blocks 23 are pushed to move in a mutually remote direction. During this process, the driving block 23 drives one end of the positioning rod 28 to be withdrawn from the corresponding positioning groove 29 on the end plate 1, and the positioning of the switching sleeve 3 on the end plate 1 is released. Then, use the handle 4 to rotate the switching sleeve 3 on the end plate 1 to drive the next switching tube 8 to rotate to the inlet pipe 9 and the outlet pipe 10. Release the grip rod 18. Under the elastic force of the spring 20, the grip rod 18 is pushed to reset, thereby driving the through rod 27 to move in the reverse direction in the driving groove 24, pulling the two driving blocks 23 to reset. During this process, the driving block 23 drives the positioning rod 28 to be inserted into the positioning groove 29 at the corresponding position on the end plate 1 to position the switched switching tube 8, and through the second connecting rod 25 and the driving ring 26, the connecting sleeve 11 is pulled to move, connecting the switching tube 8 with the inlet pipe 9 and the outlet pipe 10. When the connecting sleeve 11 moves, it drives the insertion pipe 12 to be inserted and pressed against the gasket 16 of the first sealing ring 13 on the inner wall of the switching tube 8, and the connecting sleeve 11 drives the pressing ring 17 at one end of the inner tube 14 to be pressed against the gasket 16 of the second sealing ring 15 on the inner wall of the switching tube 8, improving the sealing performance of the connection between the switching tube 8 and the inlet pipe 9 and the outlet pipe 10.

[0036] See Figure 1 , Figure 2 and Figure 9 , the position adjustment structure includes a groove 31 formed on the middle sleeve 6 near the switching tube 8. A rotating rod 33 rotatably passes through the groove 31. A rotating sleeve 32 is fixedly sleeved on the part of the rotating rod 33 inside the groove 31. Position adjustment pieces 34 are installed at both ends of the rotating rod 33. The position adjustment pieces 34 are attached to the side edge of the end face of the switching tube 8. Torsion springs are connected between both ends of the rotating sleeve 32 and the two side groove walls of the groove 31. Rotate the rotating sleeve 32 on the middle sleeve 6 to drive the position adjustment piece 34 at the end of the rotating rod 33 to turn up. Pass the switching tube 8 through the mounting sleeve 7, and the installation and replacement work of the switching tube 8 can be realized. And after installation, release the rotating sleeve 32. Under the action of the torsion spring, drive the position adjustment piece 34 to reset. By using the position adjustment piece 34 to closely adhere to the edge of the end of the switching tube 8, the switching tube 8 is adjusted, so that the inlet pipe 9 and the outlet pipe 10 can be smoothly connected to the switching tube 8.

[0037] See Figure 1 , Figure 5 , Figure 6 , Figure 7 andFigure 8 The anti-blocking structure includes an outlet hole 35 opened in the middle of the inner wall of the inlet pipe 9. A preparatory cylinder 36 communicating with the outlet hole 35 is installed on the inlet pipe 9, and a pushing structure is arranged in the preparatory cylinder 36;

[0038] The blocking structure includes a blocking sleeve 42 arranged at the position of the outlet hole 35 on the inner wall of the inlet pipe 9. A fourth connecting rod 41 is connected to the right edge of the inner wall of the blocking sleeve 42. One end of the fourth connecting rod 41 is connected to a cross bar 40. One end of the cross bar 40 is connected with a blocking block 38. The blocking block 38 is in the shape of a frustum. A fixed hopper 39 is arranged between the blocking block 38 and the blocking sleeve 42 on the inner wall of the inlet pipe 9. The cross bar 40 passes through the fixed hopper 39. A third connecting rod 37 is connected to the blocking block 38, and one end of the third connecting rod 37 is connected to the pressing ring 17;

[0039] The pushing structure includes a screw rod 43 rotatably passing through the middle threaded groove at the bottom end of the preparatory cylinder 36. A turntable 44 is fixedly sleeved on the bottom end of the screw rod 43. A pushing plate 45 tightly attached to the inner wall of the preparatory cylinder 36 is sleeved on the top end of the screw rod 43. A fixed pipe 46 is communicated and fixed at the top end of the inner wall of the preparatory cylinder 36. The fixed pipe 46 fixedly passes through the corresponding end plate 1. A threaded sleeve 48 is rotatably sleeved on one end of the fixed pipe 46 by thread. The end of the threaded sleeve 48 away from the fixed pipe 46 is rotatably sleeved on a communicating pipe 47 by thread. One end of the communicating pipe 47 is communicated with the switching pipe 8. The right section of the communicating pipe 47 is inclined upward. When the communicating sleeve 11 is pulled out from both ends of the switching pipe 8 and the handle 4 is rotated to switch the switching pipe 8, the communicating sleeve 11 drives the inner pipe 14 to move in the inlet pipe 9, drives the blocking block 38 to move and insert tightly into the fixed hopper 39 through the third connecting rod 37, plays a role in blocking in the inlet pipe 9, and drives the blocking sleeve 42 to move away from the outlet hole 35 through the cross bar 40 and the fourth connecting rod 41, opening the outlet hole 35 and the preparatory cylinder 36, so that blood can flow from the inlet pipe 9 to the preparatory cylinder 36, avoiding the problem of blood circulation head block during the process of switching the switching pipe 8. After switching the switching pipe 8, the threaded sleeve 48 at one end of the communicating pipe 47 corresponding to the switching pipe 8 is tightened to the fixed pipe 46, connecting the preparatory cylinder 36 with the corresponding switching pipe 8. In this way, when the grip rod 18 is released and the communicating sleeve 11 moves to connect the inlet pipe 9, the switching pipe 8 and the outlet pipe 10, the communicating sleeve 11 pulls the blocking sleeve 42 to move to the outlet hole 35 and block at the outlet hole 35. At this time, the turntable 44 can be used to rotate the screw rod 43 to drive the pushing plate 45 to move upward in the preparatory cylinder 36, squeezing the blood in the preparatory cylinder 36 from the fixed pipe 46 and the communicating pipe 47 into the switching pipe 8. When the pushing plate 45 moves upward to the fixed pipe 46, it can play a role in blocking at the fixed pipe 46, and the communicating pipe 47 is inclined upward to the right, so that the blood pushed into the switching pipe 8 can flow along the flow direction of the external circulation blood, reducing the problem of blood circulation blockage.

[0040] The implementation principle of the extracorporeal circulation pipeline of a blood purification treatment device according to an embodiment of the present invention is as follows: When a blood clot blocks the corresponding switching tube 8, the grip rod 18 can be held at the handle 4, and the grip rod 18 is pulled to move away from the switching tube 8, driving the through rod 27 to move away from the switching tube 8 in the driving groove 24. By squeezing the wall of the driving groove 24 by the through rod 27, two driving blocks 23 are pushed to move away from each other. One end of the positioning rod 28 is pulled out from the positioning groove 29 at the corresponding position on the end plate 1 by the driving block 23, and the positioning of the switching sleeve 3 on the end plate 1 is released. During this process, the movement of the driving block 23 can drive the communication sleeve 11 to move through the second connecting rod 25 and the driving ring 26, and then the communication sleeve 11 is pulled out from both ends of the switching tube 8. The communication sleeve 11 drives the blocking block 38 in the inlet pipe 9 to move and tightly insert into the fixed hopper 39 to block the inlet pipe 9. Moreover, the movement of the blocking block 38 drives the blocking sleeve 42 to move away from the outlet hole 35, opening the preparation cylinder 36. The preparation cylinder 36 is communicated with the inlet pipe 9, so that blood can continue to flow from the inlet pipe 9 into the preparation cylinder 36, ensuring the continuous progress of blood circulation work during the switching process, improving work efficiency. Then, the switching sleeve 3 is rotated on the end plate 1 by using the handle 4, and the intermediate sleeve 6 is driven to rotate by the fixed rod 5, rotating the next switching tube 8 to the position between the inlet pipe 9 and the outlet pipe 10. At this time, the grip rod 18 is released. Under the elastic force of the spring 20, the grip rod 18 is pushed to move in the reverse direction, driving the driving block 23 to move in the reverse direction and reset. The driving block 23 drives the positioning rod 28 to insert into the positioning groove 29 at the corresponding position on the end plate 1 to position the switching tube 8 on the end plate 1, and also synchronously drives the communication sleeve 11 to move in the reverse direction. The communication sleeve 11 is sleeved on the switching tube 8, driving one end of the insertion tube 12 to tightly abut against the gasket 16 of the first sealing ring 13 on the inner wall of the switching tube 8. At the same time, the communication sleeve 11 drives the abutting ring 17 at one end of the inner tube 14 to move and tightly abut against the gasket 16 of the second sealing ring 15 to ensure the sealing of the connection. The movement of the inner tube 14 also drives the blocking sleeve 42 to move in the reverse direction and reset, blocking the outlet hole 35 in the inlet pipe 9. Finally, the screw 43 is rotated by using the turntable 44, driving the push plate 45 to move upward in the preparation cylinder 36, and pushing the blood in the preparation cylinder 36 into the corresponding switching tube 8, and then the blood circulation work can continue. The operation is simpler and more convenient, and the work efficiency is higher.

[0041] The above are all preferred embodiments of the present invention, and the protection scope of the present invention is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. An extracorporeal circulation pipeline of a blood purification treatment device, comprising an end plate (1), an inlet pipe (9) and an outlet pipe (10), characterized in that: The two end plates (1) are fixedly connected by a first connecting rod (2). The inlet pipe (9) is fixedly passed through one of the end plates (1), and the outlet pipe (10) is fixedly passed through the other end plate (1). A plurality of switching pipes (8) are arranged between the two end plates (1) through a switching structure; The switching structure includes two switching sleeves (3) respectively rotatably sleeved on the sides of the two end plates (1). A handle (4) is installed between the two switching sleeves (3). A fixing rod (5) is connected to the middle of the inner wall of the handle (4). One end of the fixing rod (5) is connected with an intermediate sleeve (6). A plurality of mounting sleeves (7) are arranged on the inner wall of the intermediate sleeve (6) at equal angular intervals in a circumferential manner. The switching pipe (8) movably passes through the mounting sleeve (7). An adjustment structure is arranged on the mounting sleeve (7). A communication structure is arranged between the switching pipe (8) and the inlet pipe (9) and the outlet pipe (10). An anti-blocking structure is arranged on the inlet pipe (9). A driving structure is arranged on the handle (4).

2. The extracorporeal circulation pipeline of a blood purification treatment device according to claim 1, characterized in that: The communication structure includes two communication sleeves (11) respectively movably sleeved on the inlet pipe (9) and the outlet pipe (10). One end of the communication sleeve (11) is connected with an insertion pipe (12). First sealing rings (13) are arranged at both ends close to the inner wall of the switching pipe (8). A sealing structure is arranged in the communication sleeve (11).

3. The extracorporeal circulation pipeline of a blood purification treatment device according to claim 2, characterized in that: The sealing structure includes an inner pipe (14) connected to the inner wall of the communication sleeve (11). A second sealing ring (15) is arranged on the inner wall of the inlet pipe (9) close to the switching pipe (8). Sealing gaskets (16) are arranged on both the first sealing ring (13) and the second sealing ring (15). A pressing ring (17) is arranged at one end of the inner pipe (14) passing through the second sealing ring (15). The pressing ring (17) presses against the sealing gasket (16) of the second sealing ring (15). A blocking structure is arranged in the inlet pipe (9).

4. The extracorporeal circulation pipeline of a blood purification treatment device according to claim 1, characterized in that: The driving structure includes a grip rod (18) movably sleeved on a fixed rod (5). End blocks (21) are arranged at both ends of the grip rod (18). Two fixed bars (22) are connected to the end blocks (21). Chutes are opened at positions near both ends on the inner wall of the handle (4). Driving blocks (23) are slidably arranged in the chutes. Each group of two fixed bars (22) are respectively attached to the upper and lower side surfaces of the driving blocks (23). A driving groove (24) is opened on the driving blocks (23). A positioning structure is arranged between the driving blocks (23) and the end plate (1). One end of the fixed bar (22) far from the end block (21) fixedly passes through a through rod (27). The through rod (27) movably passes through the driving groove (24). Two telescopic rods (19) are connected between the grip rod (18) and the handle (4). A spring (20) is sleeved on the telescopic rod (19). Both ends of the spring (20) are respectively connected to the handle (4) and the grip rod (18). A second connecting rod (25) is connected to the side surface of the driving block (23) far from the handle (4). One end of the second connecting rod (25) is connected to a driving ring (26). A fixed block (30) is sleeved on the driving ring (26). The fixed block (30) is fixedly connected to the connecting sleeve (11). A through hole (49) for the driving ring (26) to pass through is opened on the fixed block (30). An opening for the second connecting rod (25) to pass through is opened on the through hole (49).

5. The extracorporeal circulation pipeline of a blood purification treatment device according to claim 4, characterized in that: The positioning structure includes positioning rods (28) connected to the side surfaces of the two driving blocks (23) away from each other. The positioning rods (28) movably pass through the handle (4). A plurality of positioning grooves (29) are opened on the end plate (1) at equal angles in the circumferential direction. One end of the positioning rod (28) movably inserts into the positioning groove (29).

6. The extracorporeal circulation pipeline of a blood purification treatment device according to claim 1, characterized in that: The position adjustment structure includes a groove (31) opened on the middle sleeve (6) near the switching tube (8). A rotating rod (33) rotatably passes through the groove (31). A rotating sleeve (32) is fixedly sleeved on the part of the rotating rod (33) in the groove (31). Position adjustment pieces (34) are installed at both ends of the rotating rod (33). The position adjustment pieces (34) are attached to the side edges of the end face of the switching tube (8). Torsion springs are connected between both ends of the rotating sleeve (32) and the two side walls of the groove (31).

7. The extracorporeal circulation pipeline of a blood purification treatment device according to claim 1, characterized in that: The anti-blocking structure includes an outlet hole (35) opened in the middle of the inner wall of the inlet pipe (9). A preparatory cylinder (36) communicating with the outlet hole (35) is installed on the inlet pipe (9). A pushing structure is arranged in the preparatory cylinder (36).

8. The extracorporeal circulation pipeline of a blood purification treatment device according to claim 3, characterized in that: The plugging structure includes a plugging sleeve (42) arranged at the position of the outlet hole (35) on the inner wall of the inlet pipe (9). A fourth connecting rod (41) is connected to the right edge of the inner wall of the plugging sleeve (42). One end of the fourth connecting rod (41) is connected to a cross bar (40). A plugging block (38) is connected to one end of the cross bar (40). The plugging block (38) is in a frustum shape. A fixed hopper (39) is arranged between the plugging block (38) and the plugging sleeve (42) on the inner wall of the inlet pipe (9). The cross bar (40) passes through the fixed hopper (39). A third connecting rod (37) is connected to the plugging block (38). One end of the third connecting rod (37) is connected to the abutting ring (17).

9. The extracorporeal circulation pipeline of a blood purification treatment device according to claim 7, characterized in that: The pushing structure includes a screw rod (43) rotatably passing through the middle threaded groove at the bottom end of the preparation cylinder (36). A turntable (44) is fixedly sleeved on the bottom end of the screw rod (43). A pushing disk (45) tightly attached to the inner wall of the preparation cylinder (36) is sleeved on the top end of the screw rod (43). A fixed pipe (46) communicates with the inner wall at the top end of the preparation cylinder (36). The fixed pipe (46) fixedly passes through the corresponding end plate (1). A threaded sleeve (48) is rotatably sleeved on one end of the fixed pipe (46) through threads. The end of the threaded sleeve (48) away from the fixed pipe (46) is rotatably sleeved on a communicating pipe (47) through threads. One end of the communicating pipe (47) communicates with a switching pipe (8). The right section of the communicating pipe (47) is arranged obliquely upward.

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