A double-filtration blood purification dialysis device

Abstract

The present invention discloses a double-filtration blood purification dialysis device, comprising an equipment shell, wherein a moving mechanism is arranged at the lower end of the equipment shell, wherein the moving mechanism comprises a support platform, universal wheels, and a lifting rod, wherein the support platform is mounted at the lower end of the equipment shell, the universal wheels are mounted at the four corners of the lower end of the support platform, the lifting rod is mounted in the middle of the support platform, the lifting rod comprises a first lifting rod, a second lifting rod, and a limiting bolt, wherein the second lifting rod is mounted on the inner side of the first lifting rod, the first lifting rod and the second lifting rod are mounted in the middle of the support platform, and the limiting bolt is mounted on the outer side of the first lifting rod. The present invention achieves the purpose of double filtration and improves the blood purification effect by introducing the liquid after the filtration liquid and the replacement liquid are replaced in the replacement bin into the second blood retention bin through a pipeline and transporting the liquid to the patient's body, and introducing the replaced waste liquid into a bag or bottle containing the waste liquid through a pipeline for centralized treatment.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a double-filtration blood purification dialysis device. Background Art

[0002] Blood purification is also called dialysis in daily life. Its meaning is: to draw the patient's blood out of the body and pass it through a purification device to remove certain pathogenic substances in it, purify the blood, and achieve the purpose of treating the disease. Blood purification should include: hemodialysis, hemofiltration, hemoperfusion, plasma exchange, immunoadsorption, etc. Although peritoneal dialysis does not draw blood out of the body, its principles are the same. Hemodialysis is only one of the methods for treating chronic renal failure.

[0003] Most of the existing devices are bedside fixed cabinet structures, which are not easy to adjust according to the actual situation of use, resulting in the inconvenience of reflecting the overall performance of the equipment during use. At the same time, most of the existing devices are single-stage filtration, which is not easy to improve the blood purification effect. Summary of the invention

[0004] The object of the present invention is to provide a dual-filtration blood purification dialysis device to solve the problem mentioned in the above background technology that most of the existing devices are bedside fixed cabinet structures, which are not convenient to adjust according to the actual situation of use, resulting in the inconvenience of reflecting the overall performance of the equipment during use. At the same time, most of the existing devices are single-filtration, which is not convenient for improving the blood purification effect.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a dual-filtration blood purification dialysis device, comprising an equipment housing, a moving mechanism is arranged at the lower end of the equipment housing, the moving mechanism comprises a support platform, universal wheels, and a lifting rod, the support platform is installed at the lower end of the equipment housing, the universal wheels are installed at the four corners of the lower end of the support platform, the lifting rod is installed in the middle of the support platform, the lifting rod comprises a first lifting rod, a second lifting rod, and a limiting bolt, the second lifting rod is installed on the inner side of the first lifting rod, the first lifting rod and the second lifting rod are installed in the middle of the support platform, and the limiting bolt The positioning bolt is installed on the outside of the first lifting rod, an infusion mechanism is installed on one side of the device shell, a protection mechanism is arranged on the surface of the device shell, and the protection mechanism includes a movable door, a safety lock, and a visible window. An installation groove is provided on the outer surface of the device shell, a circulation system is provided on the inner side of the installation groove, movable grooves are provided on both sides of the interior of the installation groove, the movable door is movably installed on the inner side of the movable groove through a sliding groove, the safety lock is installed between the two movable doors, the visible window is installed on the outer surface of the movable door, and a filtering mechanism is provided on the side of the device shell away from the infusion mechanism.

[0006] Furthermore, the infusion mechanism includes a rotating rod, a telescopic rod, and an infusion hook. A storage groove is provided on the surface of the device housing away from the filtering mechanism. The rotating rod is movably mounted on the inner side of the storage groove through a bearing. A fixing mechanism is provided between the rotating rod and the storage groove. The telescopic rod is mounted on the upper end of the rotating rod, and the infusion hook is movably mounted on the upper end of the telescopic rod through a bearing.

[0007] Furthermore, the fixing mechanism includes a fixing ring, a ball, and a first spring. The fixing ring is fixedly installed between the rotating rod and the storage slot. The inner side walls of the fixing ring are provided with fixing holes. The ball is movably installed on the inner side of the fixing hole. The first spring is installed on the inner side of the fixing hole. The two ends of the first spring are fixedly connected to the ball and the fixing hole respectively.

[0008] Furthermore, the telescopic rod includes a sliding rod, a mounting tube, a movable rod, and a fastener. The sliding rod is mounted on the upper end surface of the rotating rod, a movable groove is provided at the lower end of the mounting tube, the movable groove is cooperatively connected with the sliding rod, the mounting tube is movably mounted on the upper end of the rotating rod through the movable groove, a fastening bolt is movably mounted between the rotating rod and the mounting tube through a thread, the movable rod is movably mounted on the inner side of the mounting tube through the sliding groove, the fastener is movably mounted between the movable rod and the mounting tube through a thread, the infusion hook is movably mounted on the upper end of the movable rod through a bearing, and a plurality of fixing clips are sleeved on the outer surfaces of the mounting tube and the movable rod.

[0009] Furthermore, the circulation system includes a blood pump, a replacement chamber, a first blood retention chamber, and a second blood retention chamber, the blood pump is installed at the lower end of the inner side of the mounting groove, the replacement chamber is installed at the upper end of the blood pump inside the mounting groove, mounting rings are fixedly arranged on both sides of the interior of the mounting groove, the first blood retention chamber and the second blood retention chamber are respectively installed on the inner sides of the mounting rings, an air detector is installed on one side of the second blood retention chamber inside the mounting groove, and a heparin syringe is fixedly arranged on one side of the blood pump inside the mounting groove.

[0010] Furthermore, the filtering mechanism includes a guide rail, a connecting piece, and a filter. A mounting bin is provided on a side of the device housing away from the infusion mechanism, the guide rail is installed on an inner side of the mounting bin, a movable part is movably installed on the outer side of the guide rail through a slide groove, a limiting part is movably installed between the movable part and the guide rail through a thread, a connecting groove is provided on the side of the movable part away from the guide rail, one end of the connecting piece is movably installed on the inner side of the connecting groove through a pin shaft, the movable part and the connecting piece are fixedly connected by a locking mechanism, a mounting mechanism is fixedly provided on the end of the connecting piece away from the movable part, and the filter is installed on the inner side of the mounting mechanism.

[0011] Furthermore, the locking mechanism includes a mounting hole, a fixing pin, and a second spring. The mounting hole is opened on one side of the inner part of the connecting groove. The fixing pin is movably installed on the inner side of the mounting hole through a sliding groove. The second spring is installed on the inner side of the mounting hole. The two ends of the second spring are respectively fixedly connected to the mounting hole and the fixing pin. A locking hole is opened on one side of the connecting piece close to the fixing pin, and the locking hole is matched and connected with the fixing pin.

[0012] Furthermore, the installation mechanism includes a limit ring, a limit block, and a third spring. The limit ring is installed at one end of the connecting part away from the movable part. Limit grooves are provided on both side walls inside the limit ring. The limit block is movably installed on the inner side of the limit groove through a sliding groove. The third spring is installed on the inner side of the limit groove. Both ends of the third spring are fixedly connected to the limit groove and the limit block respectively. Rubber pads are provided on the inner side of the limit ring and the side opposite to the limit block.

[0013] Further, the connecting member includes a first connecting plate, a second connecting plate, and a limiting column. One end of the first connecting plate is movably installed on the inner side of the connecting groove through a pin shaft. A slide rail is fixedly provided on one side of the first connecting plate. The second connecting plate is installed on the outer side of the slide rail through the slide groove. A limiting hole is provided on one side of the second connecting plate. A connecting hole is provided on the side of the first connecting plate away from the movable member. The limiting column is installed on the inner side of the connecting hole through the slide groove. A fourth spring is fixedly provided on the inner side of the connecting hole. Both ends of the fourth spring are respectively fixedly connected to the connecting hole and the limiting column. The limiting column is cooperatively connected with the limiting hole.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. By adjusting the first lifting rod and the second lifting rod of the lifting rod and fixing them with the limit bolts, it is convenient to adjust the height of the equipment according to actual needs, and by rotating the rotating rod of the infusion mechanism, the infusion hook is moved out of the inner side of the storage tank, and by moving the position of the telescopic rod on the rotating rod according to needs and fixing it with the fastening bolts, by adjusting the position of the movable rod of the telescopic rod in the mounting barrel, it is convenient to adjust the height of the infusion hook according to needs, and at the same time, the mounting barrel and the movable rod are fixed by fasteners. After the infusion hook is adjusted and fixed, the bag or bottle of the replacement fluid and the bag or bottle of the waste fluid are installed on the infusion hook, and the movable door of the protection mechanism is moved to both sides, so that the movable door is moved to the inner side of the movable tank, so that it is convenient for storage and does not hinder work;

[0016] 2. The blood drawn from the patient's vein is transfused into the first blood retention chamber under the traction of the blood pump. The blood entering the first blood retention chamber flows into the inner side of the filter of the filtering mechanism through a pipeline. The blood after the first filtration through the filter flows into the second blood retention chamber through a pipeline, and the outflow end of the second blood retention chamber is connected to the inflow end of the blood pump through a pipeline, and the outflow end of the blood pump is connected to the patient's artery. The blood is also detected by an air detector in the process of flowing into the artery, and the corresponding heparin is injected through a heparin syringe. During the filtration, the filtrate filtered by the filter is introduced into the replacement chamber through a pipeline, and the replacement fluid is introduced into the inner side of the replacement chamber by hanging it on the infusion hook. The filtrate and the liquid after the replacement of the replacement fluid in the replacement chamber are introduced into the second blood retention chamber through a pipeline and transported to the patient's body, and the replaced waste liquid is introduced into the bag or bottle containing waste liquid through a pipeline for centralized treatment, thereby achieving the purpose of double filtration and improving the blood purification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a double-filtration blood purification dialysis device of the present invention;

[0018] Figure 2 It is a structural schematic diagram of a fixing mechanism of a double-filtration blood purification dialysis device of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of a protection mechanism of a double-filtration blood purification dialysis device of the present invention;

[0020] Figure 4 This is a structural schematic diagram of a locking mechanism of a double-filter blood purification dialysis device of the present invention;

[0021] Figure 5 It is a structural schematic diagram of a locking mechanism of a mounting mechanism of a dual-filtration blood purification dialysis device of the present invention.

[0022] In the figure: 1. Equipment housing; 2. Moving mechanism; 21. Bracket platform; 22. Universal wheel; 23. Lifting rod; 231. First lifting rod; 232. Second lifting rod; 233. Stop bolt; 3. Infusion mechanism; 31. Rotating rod; 32. Telescopic rod; 321. Sliding rod; 322. Mounting tube; 323. Movable rod; 324. Fastener; 325. Moving slot; 326. Fastening bolt; 33. Infusion hook; 34. Storage tank; 35. Fixing mechanism; 351. Fixing ring; 352. Ball; 353. First spring; 354. Fixing hole; 4. Protective mechanism; 41. Movable door; 42. Safety lock; 43. Visual window; 44. Mounting slot; 45. Movable slot; 5. Circulation system; 51. Blood pump; 52. Placement Change chamber; 53, first blood retention chamber; 54, second blood retention chamber; 55, installation ring; 56, air detector; 57, heparin syringe; 6, filtering mechanism; 61, guide rail; 62, connecting piece; 621, first connecting plate; 622, second connecting plate; 623, limiting column; 624, slide rail; 625, limiting hole; 626, connecting hole; 627, fourth spring; 63, filter; 64, installation chamber; 65, movable part; 651, connecting groove; 66, limiting piece; 67, locking mechanism; 671, installation hole; 672, fixing pin; 673, second spring; 674, locking hole; 68, installation mechanism; 681, limiting ring; 682, limiting block; 683, third spring; 684, limiting groove; 7, fixing clamp. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-5The present invention provides a technical solution: a dual-filtration blood purification dialysis device, comprising an equipment housing 1, a moving mechanism 2 is arranged at the lower end of the equipment housing 1, the moving mechanism 2 comprises a support platform 21, a universal wheel 22, and a lifting rod 23, the support platform 21 is installed at the lower end of the equipment housing 1, the universal wheel 22 is installed at the four corners of the lower end of the support platform 21, the lifting rod 23 is installed in the middle of the support platform 21, the lifting rod 23 comprises a first lifting rod 231, a second lifting rod 232, and a limiting bolt 233, the second lifting rod 232 is installed on the inner side of the first lifting rod 231, the first lifting rod 231 and the second lifting rod 232 are installed in the middle of the support platform 21, the limiting bolt 233 The bolt 233 is installed on the outside of the first lifting rod 231, and an infusion mechanism 3 is installed on one side of the device housing 1. A protection mechanism 4 is arranged on the surface of the device housing 1, and the protection mechanism 4 includes a movable door 41, a safety lock 42, and a visible window 43. An installation groove 44 is provided on the outer surface of the device housing 1, and a circulation system 5 is provided on the inner side of the installation groove 44. Movable grooves 45 are provided on both sides of the inside of the installation groove 44. The movable door 41 is movably installed on the inner side of the movable groove 45 through a sliding groove, and the safety lock 42 is installed between the two movable doors 41. The visible window 43 is installed on the outer surface of the movable door 41, and a filtering mechanism 6 is provided on the side of the device housing 1 away from the infusion mechanism 3.

[0025] The infusion mechanism 3 of the present invention includes a rotating rod 31, a telescopic rod 32, and an infusion hook 33. A storage groove 34 is provided on the surface of the device housing 1 on the side away from the filtering mechanism 6. The rotating rod 31 is movably mounted on the inner side of the storage groove 34 through a bearing. A fixing mechanism 35 is provided between the rotating rod 31 and the storage groove 34. The telescopic rod 32 is mounted on the upper end of the rotating rod 31. The infusion hook 33 is movably mounted on the upper end of the telescopic rod 32 through a bearing, so as to facilitate adjustment according to usage requirements.

[0026] The fixing mechanism 35 of the present invention includes a fixing ring 351, a ball 352, and a first spring 353. The fixing ring 351 is fixedly installed between the rotating rod 31 and the storage groove 34. The inner side walls of the fixing ring 351 are both provided with fixing holes 354. The ball 352 is movably installed on the inner side of the fixing hole 354. The first spring 353 is installed on the inner side of the fixing hole 354. The two ends of the first spring 353 are fixedly connected to the ball 352 and the fixing hole 354 respectively, so as to fix the infusion mechanism 3 and avoid the infusion mechanism 3 from interfering with the operation of the staff when the device is moved, and also avoid damage to the infusion mechanism 3.

[0027] The telescopic rod 32 of the present invention includes a sliding rod 321, a mounting tube 322, a movable rod 323, and a fastener 324. The sliding rod 321 is mounted on the upper end surface of the rotating rod 31, and a movable groove 325 is provided at the lower end of the mounting tube 322. The movable groove 325 is matched with the sliding rod 321. The mounting tube 322 is movably mounted on the upper end of the rotating rod 31 through the movable groove 325. A fastening bolt 326 is movably installed between the rotating rod 31 and the mounting tube 322 through a thread. The movable rod 323 is movably mounted on the inner side of the mounting tube 322 through the sliding groove. The fastener 324 is movably installed between the movable rod 323 and the mounting tube 322 through a thread. The infusion hook 33 is movably mounted on the upper end of the movable rod 323 through a bearing. The outer surfaces of the mounting tube 322 and the movable rod 323 are sleeved with a plurality of fixing clips 7, so as to facilitate the adjustment of the position of the infusion mechanism 3 according to needs.

[0028] The circulation system 5 of the present invention includes a blood pump 51, a replacement chamber 52, a first blood retention chamber 53, and a second blood retention chamber 54. The blood pump 51 is installed at the lower end of the inner side of the mounting groove 44, and the replacement chamber 52 is installed at the upper end of the blood pump 51 inside the mounting groove 44. Mounting rings 55 are fixedly arranged on both sides of the interior of the mounting groove 44. The first blood retention chamber 53 and the second blood retention chamber 54 are respectively installed on the inner sides of the mounting rings 55. An air detector 56 is installed on one side of the second blood retention chamber 54 inside the mounting groove 44. A heparin syringe 57 is fixedly arranged on one side of the blood pump 51 inside the mounting groove 44, so as to improve the blood purification effect.

[0029] The filtering mechanism 6 described in the present invention includes a guide rail 61, a connecting member 62, and a filter 63. A mounting bin 64 is provided on the side of the device housing 1 away from the infusion mechanism 3. The guide rail 61 is installed on the inner side of the mounting bin 64. A movable member 65 is movably installed on the outer side of the guide rail 61 through a slide groove. A limiting member 66 is movably installed between the movable member 65 and the guide rail 61 through a thread. A connecting groove 651 is provided on the side of the movable member 65 away from the guide rail 61. One end of the connecting member 62 is movably installed on the inner side of the connecting groove 651 through a pin shaft. The movable member 65 and the connecting member 62 are fixedly connected by a locking mechanism 67. A mounting mechanism 68 is fixedly provided on the end of the connecting member 62 away from the movable member 65. The filter 63 is installed on the inner side of the mounting mechanism 68 to improve the blood purification effect.

[0030] The locking mechanism 67 of the present invention includes a mounting hole 671, a fixing pin 672, and a second spring 673. The mounting hole 671 is provided on one side of the interior of the connecting groove 651. The fixing pin 672 is movably installed on the inner side of the mounting hole 671 through a sliding groove. The second spring 673 is installed on the inner side of the mounting hole 671. The two ends of the second spring 673 are respectively fixedly connected to the mounting hole 671 and the fixing pin 672. A locking hole 674 is provided on one side of the connecting member 62 close to the fixing pin 672. The locking hole 674 is cooperatively connected with the fixing pin 672 to facilitate the storage of the filtering mechanism 6, avoid damage to the mechanism, and avoid hindering the operation of the staff.

[0031] The mounting mechanism 68 of the present invention comprises a limiting ring 681, a limiting block 682 and a third spring 683. The limiting ring 681 is mounted on the end of the connecting member 62 away from the movable member 65. The inner side walls of the limiting ring 681 are provided with limiting grooves 684. The limiting block 682 is movably mounted on the inner side of the limiting groove 684 through a sliding groove. The third spring 683 is mounted on the inner side of the limiting groove 684. The two ends of the third spring 683 are respectively fixedly connected to the limiting groove 684 and the limiting block 682. Rubber pads are provided on the inner side of the limiting ring 681 and the side opposite to the limiting block 682 to facilitate the installation of the filter 63.

[0032] The connecting member 62 of the present invention includes a first connecting plate 621, a second connecting plate 622, and a limiting column 623. One end of the first connecting plate 621 is movably installed on the inner side of the connecting groove 651 through a pin shaft. A sliding rail 624 is fixedly provided on one side of the first connecting plate 621. The second connecting plate 622 is installed on the outer side of the sliding rail 624 through a sliding groove. A limiting hole 625 is provided on one side of the second connecting plate 622. A connecting hole 626 is provided on the side of the first connecting plate 621 away from the movable member 65. The limiting column 623 is installed on the inner side of the connecting hole 626 through a sliding groove. A fourth spring 627 is fixedly provided on the inner side of the connecting hole 626. The two ends of the fourth spring 627 are respectively fixedly connected to the connecting hole 626 and the limiting column 623. The limiting column 623 is cooperatively connected with the limiting hole 625, so as to facilitate the adjustment of the position of the filter 63 according to the actual use situation, thereby facilitating the use of the equipment.

[0033] Working principle: When in use, the device is moved to a corresponding location through the universal wheel 22 of the moving mechanism 2, and the first lifting rod 231 and the second lifting rod 232 of the lifting rod 23 are adjusted and fixed by the limit bolt 233, so as to facilitate the adjustment of the height of the device according to actual needs, and the infusion hook 33 is moved out of the inner side of the storage tank 34 by rotating the rotating rod 31 of the infusion mechanism 3, and the position of the telescopic rod 32 on the rotating rod 31 is moved according to needs, and fixed by the fastening bolt 326, and the position of the movable rod 323 of the telescopic rod 32 in the installation cylinder 322 is adjusted, so as to facilitate the adjustment of the infusion according to needs. The height of the liquid hook 33 is adjusted, and the mounting cylinder 322 and the movable rod 323 are fixed by the fastener 324. After the infusion hook 33 is adjusted and fixed, the bag or bottle of the replacement fluid and the bag or bottle of the waste liquid are installed on the infusion hook 33, and the movable door 41 of the protection mechanism 4 is moved to both sides, so that the movable door 41 is moved to the inner side of the movable groove 45, so as to facilitate storage and not hinder work, and the connecting member 62 is fixed by rotating the connecting member 62 out of the inner side of the mounting bin 64 and driving the fixing pin 672 to enter the inner side of the locking hole 674 by the second spring 673, and adjusting the movable member 65 on the guide rail 61 as needed. The position of the connecting member 62 is fixed by a stopper 66, and the length of the connecting member 62 is adjusted according to the needs of the user to facilitate the use of the device. The filter 63 is installed on the inner side of the stopper ring 681 of the installation mechanism 68, and the blood drawn from the patient's vein is transfused into the first blood retention chamber 53 under the traction of the blood pump 51. The blood entering the first blood retention chamber 53 flows into the inner side of the filter 63 of the filtering mechanism 6 through a pipeline, and the blood after the first filtration through the filter 63 flows into the second blood retention chamber 54 through a pipeline, and the outflow end of the second blood retention chamber 54 is connected to the inflow end of the blood pump 51 through a pipeline, The outflow end of 51 is connected to the patient's artery. The blood is also detected by the air detector 56 in the process of flowing into the artery, and the corresponding heparin is injected through the heparin syringe 57. During the filtering, the filtrate filtered by the filter 63 is introduced into the replacement chamber 52 through a pipeline, and the replacement fluid is introduced into the inner side of the replacement chamber 52 by hanging it on the infusion hook 33. The liquid replaced by the filtrate and the replacement fluid in the replacement chamber 52 is introduced into the second blood retention chamber 54 through a pipeline and transported to the patient's body. The replaced waste liquid is introduced into the bag or bottle containing waste liquid through a pipeline for centralized treatment.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-filtration blood purification dialysis device, comprising a device housing (1), characterized in that: A moving mechanism (2) is provided at the lower end of the device housing (1), the moving mechanism (2) comprising a support platform (21), universal wheels (22), and a lifting rod (23); the support platform (21) is mounted at the lower end of the device housing (1); the universal wheels (22) are mounted at the four corners of the lower end of the support platform (21); the lifting rod (23) is mounted in the middle of the support platform (21); the lifting rod (23) comprises a first lifting rod (231), a second lifting rod (232), and a limiting bolt (233); the second lifting rod (232) is mounted on the inner side of the first lifting rod (231); the first lifting rod (231) and the second lifting rod (232) are mounted in the middle of the support platform (21); The limiting bolt (233) is installed on the outside of the first lifting rod (231); an infusion mechanism (3) is installed on one side of the device housing (1); a protection mechanism (4) is arranged on the surface of the device housing (1); the protection mechanism (4) comprises a movable door (41), a safety lock (42), and a visual window (43); a mounting groove (44) is provided on the outer surface of the device housing (1); a circulation system (5) is arranged on the inner side of the mounting groove (44); movable grooves (45) are provided on both sides of the inner side of the mounting groove (44); the movable door (41) is movably installed on the inner side of the movable groove (45) through a sliding groove; the safety lock (42) is installed between the two movable doors (41); the visual window (43 ) is mounted on the outer surface of the movable door (41); a filtering mechanism (6) is provided on the side of the device housing (1) away from the infusion mechanism (3); the infusion mechanism (3) comprises a rotating rod (31), a telescopic rod (32), and an infusion hook (33); a storage groove (34) is provided on the surface of the device housing (1) on the side away from the filtering mechanism (6); the rotating rod (31) is movably mounted on the inner side of the storage groove (34) via a bearing; a fixing mechanism (35) is provided between the rotating rod (31) and the storage groove (34); the telescopic rod (32) is mounted on the upper end of the rotating rod (31); the infusion hook (33) is movably mounted on the upper end of the telescopic rod (32) via a bearing; the fixing mechanism (35) comprises a fixing ring (3 51), a ball (352), and a first spring (353), the fixing ring (351) is fixedly installed between the rotating rod (31) and the storage groove (34), the inner side walls of the fixing ring (351) are both provided with fixing holes (354), the ball (352) is movably installed on the inner side of the fixing hole (354), the first spring (353) is installed on the inner side of the fixing hole (354), and the two ends of the first spring (353) are respectively fixedly connected to the ball (352) and the fixing hole (354), the telescopic rod (32) comprises a sliding rod (321), a mounting tube (322), a movable rod (323), and a fastener (324), the sliding rod (321) is installed on the upper end surface of the rotating rod (31),The lower end of the installation cylinder (322) is provided with a movable groove (325), and the movable groove (325) is connected with the slide rod (321). The installation cylinder (322) is movably mounted on the upper end of the rotating rod (31) through the movable groove (325). A fastening bolt (326) is movably mounted between the rotating rod (31) and the installation cylinder (322) through a thread. The movable rod (323) is movably mounted on the inner side of the installation cylinder (322) through the slide groove. The fastener (324) is movably mounted between the movable rod (323) and the installation cylinder (322) through a thread. The infusion hook (33) is movably mounted on the upper end of the movable rod (323) through a bearing. The installation cylinder (322) and the outer side of the movable rod (323) are connected to each other. The side surface is sleeved with a plurality of fixing clips (7). The circulation system (5) comprises a blood pump (51), a replacement chamber (52), a first blood retention chamber (53), and a second blood retention chamber (54). The blood pump (51) is mounted at the lower end of the inner side of the mounting groove (44). The replacement chamber (52) is mounted at the upper end of the blood pump (51) inside the mounting groove (44). Mounting rings (55) are fixedly arranged on both sides of the interior of the mounting groove (44). The first blood retention chamber (53) and the second blood retention chamber (54) are respectively mounted on the inner sides of the mounting rings (55). An air detector (56) is mounted on one side of the second blood retention chamber (54) inside the mounting groove (44). The blood pump (51) inside the mounting groove (44) ) is fixedly provided with a heparin syringe (57) on one side, and the blood drawn from the patient's vein is transfused into the first blood storage chamber (53) under the traction of the blood pump (51). The blood entering the first blood storage chamber (53) flows into the inner side of the filter (63) of the filtering mechanism (6) through a pipeline. The blood after the first filtration through the filter (63) flows into the second blood storage chamber (54) through a pipeline, and the outflow end of the second blood storage chamber (54) is connected to the inflow end of the blood pump (51) through a pipeline, and the outflow end of the blood pump (51) is connected to the patient's artery. In the process of blood flowing into the artery, it is also detected by the air detector (56), and the corresponding heparin is injected through the heparin syringe (57). The filtrate filtered by the filter (63) is introduced into the replacement chamber (52) through a pipeline, and the replacement fluid is introduced into the inner side of the replacement chamber (52) by hanging the replacement fluid bag or bottle on the infusion hook (33). The liquid replaced by the filtrate and the replacement fluid in the replacement chamber (52) is introduced into the second blood retention chamber (54) through a pipeline and transported to the patient's body. The replaced waste liquid is introduced into the bag or bottle containing waste liquid through a pipeline for centralized treatment. The filtering mechanism (6) includes a guide rail (61), a connector (62), and a filter (63). A mounting chamber (64) is provided on a side of the device housing (1) away from the infusion mechanism (3). The guide rail (61) is installed on one side of the interior of the mounting chamber (64).A movable member (65) is movably mounted on the outer side of the guide rail (61) via a slide groove, a limit member (66) is movably mounted between the movable member (65) and the guide rail (61) via a thread, a connecting groove (651) is provided on a side of the movable member (65) away from the guide rail (61), one end of the connecting member (62) is movably mounted on the inner side of the connecting groove (651) via a pin shaft, the movable member (65) and the connecting member (62) are fixedly connected via a locking mechanism (67), a mounting mechanism (68) is fixedly mounted on the end of the connecting member (62) away from the movable member (65), the filter (63) is mounted on the inner side of the mounting mechanism (68), the locking mechanism (67) comprises a mounting hole (671), a fixing pin (67 2) a second spring (673), wherein the mounting hole (671) is provided on one side of the interior of the connecting groove (651), the fixing pin (672) is movably installed on the inner side of the mounting hole (671) through the sliding groove, the second spring (673) is installed on the inner side of the mounting hole (671), the two ends of the second spring (673) are respectively fixedly connected to the mounting hole (671) and the fixing pin (672), the connecting member (62) is provided with a locking hole (674) on one side close to the fixing pin (672), the locking hole (674) is cooperatively connected with the fixing pin (672), the mounting mechanism (68) comprises a limiting ring (681), a limiting block (682), and a third spring (683), the limiting ring (681) is installed on the connecting member (62) is away from one end of the movable member (65), the inner side walls of the limiting ring (681) are both provided with limiting grooves (684), the limiting block (682) is movably installed on the inner side of the limiting groove (684) through a sliding groove, the third spring (683) is installed on the inner side of the limiting groove (684), the two ends of the third spring (683) are respectively fixedly connected to the limiting groove (684) and the limiting block (682), the inner side of the limiting ring (681) and the side opposite to the limiting block (682) are both provided with rubber pads, the connecting member (62) includes a first connecting plate (621), a second connecting plate (622), and a limiting column (623), one end of the first connecting plate (621) is movably installed in the connecting groove (684) through a pin shaft 51), a slide rail (624) is fixedly provided on one side of the first connecting plate (621), the second connecting plate (622) is installed on the outer side of the slide rail (624) through a slide groove, a limiting hole (625) is provided on one side of the second connecting plate (622), a connecting hole (626) is provided on the side of the first connecting plate (621) away from the movable member (65), the limiting column (623) is installed on the inner side of the connecting hole (626) through the slide groove, a fourth spring (627) is fixedly provided on the inner side of the connecting hole (626), two ends of the fourth spring (627) are respectively fixedly connected to the connecting hole (626) and the limiting column (623), and the limiting column (623) is matched and connected to the limiting hole (625).

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