Improved anti-clogging blood purification dialyzer

Abstract

The utility model discloses an improved anti -clogging blood purification dialyzer, including dialyzer body, the dialyzer body top fixed mounting has filter box, the filter box both ends all are established with dialyzer body top intercommunication's connecting hole, the filter box inside is provided with a plurality of filters, the filter both ends all are established with the through -hole of connecting hole adaptation, the filter is provided with filter mechanism in, be provided with replacement mechanism in the filter box, the utility model discloses can through the filter of replaceable, prolong the time of safe use of equipment, and reduced the dialysis interruption risk caused by filter blockage, not only improved the continuity and stability of dialysis process, still strengthened the overall performance and reliability of dialyzer, through the hierarchical filter mechanism, realizes the depth filtration, not only improved the filtration effect, still can delay the speed of filter screen being impurity fast blockage to prolong the service life of equipment.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an improved anti-clogging blood purification dialyzer. Background Technology

[0002] Hemodialysis, as an important alternative treatment for patients with acute and chronic renal failure, involves draining blood outside the body, where it passes through the hollow fibers inside the dialyzer to exchange substances, remove metabolic waste, maintain electrolyte balance, and then return purified blood.

[0003] However, during dialysis, dialyzers are prone to blockage due to the adhesion of microemboli and large molecular impurities in the blood or blockage of membrane pores, especially when blood viscosity is high or blood cells are abnormal. At the same time, long-term use can lead to protein and cell deposition, reducing the effective filtration area and further aggravating the blockage problem. This not only significantly reduces dialysis efficiency and affects treatment results, but may also cause abnormal pressure, leading to safety hazards such as tubing rupture and blood leakage. In addition, frequent replacement of dialyzers significantly increases the economic burden on patients and the workload of medical staff.

[0004] Therefore, it is necessary to design an improved anti-clogging blood purification dialyzer to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an improved anti-clogging blood purification dialyzer.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An improved anti-clogging blood purification dialyzer includes a dialyzer body, a filter box fixedly installed on the top of the dialyzer body, an output tube provided at the bottom of the dialyzer body, connection holes at both ends of the filter box communicating with the top of the dialyzer body, a plurality of filters provided inside the filter box, through holes at both ends of the filters adapted to the connection holes, an input tube adapted to the connection holes fixedly installed on the top of the filter box, a filtration mechanism provided inside the filter, and a replacement mechanism provided inside the filter box.

[0008] Preferably, the filtration mechanism includes a filter screen one fixedly installed inside the filter near the input end, a filter screen two fixedly installed at the center position inside the filter, and a filter screen three fixedly installed inside the filter near the output end. The filter pore diameter of the filter screen one is larger than that of the filter screen two, and the filter pore diameter of the filter screen two is larger than that of the filter screen three.

[0009] Preferably, the replacement mechanism includes a rotating shaft rotatably mounted inside the filter box, a connecting frame fixedly mounted on the rotating shaft, and a sliding groove formed at one end of the rotating shaft near the dialyzer body. Several filters are fixedly connected to the connecting frame. A guide tube adapted to the sliding groove is fixedly mounted at one end of the filter box near the dialyzer body. A limiting groove is formed on the guide tube. A drive column is slidably mounted inside the guide tube. A limiting block adapted to the limiting groove is fixedly mounted on the drive column. A guide groove is formed on the drive column. The guide groove consists of vertical grooves and arc-shaped grooves arranged in a circular array and connected end-to-end. A fixing block adapted to the guide groove is fixedly mounted inside the sliding groove. An air bladder is fixedly mounted at the end of the guide tube away from the filter box.

[0010] Preferably, a return spring is fixedly installed between the drive column and the slide groove, and an air nozzle is provided on the top of the airbag, with an air plug screwed into the air nozzle.

[0011] Preferably, a sealing gasket is provided between both ends of the filter and the filter box, the diameter of the sealing gasket is equal to the inner diameter of the filter box, and the sealing gasket has a plurality of openings corresponding to the through holes.

[0012] Preferably, both ends of the filter box are provided with backflush ports adapted to the filter. The backflush ports have the same diameter as the connecting holes. A sealing plug is screwed onto the backflush port. The filter holes on the first filter screen, the second filter screen, and the third filter screen are arranged in a frustum shape, and the radius of the end closer to the input end of the filter is larger than that of the other end.

[0013] This utility model has the following beneficial effects:

[0014] 1. By setting up a pre-filter box and replaceable filters, the safe operating time of the equipment is extended and the risk of dialysis interruption due to filter clogging is reduced. This not only improves the continuity and stability of the dialysis process, but also enhances the overall performance and reliability of the dialyzer. Through the staged filtration mechanism, deep filtration of impurities such as microemboli and macromolecules in the blood is achieved. This not only improves the filtration effect, but also slows down the speed at which the filter screen is quickly clogged by impurities through the step-by-step filtration method, thereby extending the service life of the filter.

[0015] 2. By setting up an air bladder, drive column, and rotating shaft, the filter can be switched simply by squeezing and releasing the air bladder. There is no need to stop the machine or open the filter box to expose the blood to the external environment, thus ensuring the continuity and sterility of the dialysis process. This not only improves the efficiency of the equipment but also enhances the safety and applicability of the dialyzer.

[0016] 3. By setting a reset spring and a sealing gasket, the stability and sealing of the filter switching are ensured. The reset spring forces the drive column to reset, avoiding switching deviations caused by insufficient system sealing. The sealing gasket further prevents blood leakage when the through hole and the connection hole are not aligned, ensuring the hygiene and safety of the dialysis process.

[0017] 4. By setting a backflush port, the switched filter can be moved to the backflush port position and flushed by injecting solutions such as physiological saline, which achieves effective backflushing of the filter. Through the frustum-shaped filter holes, impurities are more easily separated from the filter holes, thereby improving the backflushing effect. The backflushed filter can be further recycled, extending the service life of the dialyzer. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the improved anti-clogging blood purification dialyzer proposed in this utility model, and a partially enlarged schematic diagram of its structure.

[0019] Figure 2 This is a partial structural schematic diagram and a partial exploded view of the improved anti-clogging blood purification dialyzer proposed in this utility model;

[0020] Figure 3 This is an exploded structural diagram of the filter cartridge of the improved anti-clogging blood purification dialyzer proposed in this utility model.

[0021] Figure 4 This is a cross-sectional view of the filter in the improved anti-clogging blood purification dialyzer proposed in this utility model.

[0022] Figure 5 This is a schematic diagram of the drive column of the improved anti-clogging blood purification dialyzer proposed in this utility model;

[0023] Figure 6 for Figure 4 A magnified structural diagram of point A in the middle.

[0024] In the diagram: 1. Dialyzer body; 2. Output tube; 3. Filter box; 31. Connection hole; 32. Filter; 33. Through hole; 34. Input tube; 4. Filter screen one; 41. Filter screen two; 42. Filter screen three; 5. Rotating shaft; 51. Connecting frame; 52. Slide groove; 53. Fixing block; 54. Guide tube; 55. Limiting groove; 56. Drive column; 57. Limiting block; 58. Guide groove; 59. Air bladder; 6. Return spring; 61. Air nozzle; 62. Air plug; 7. Sealing gasket; 8. Backflush port; 81. Sealing plug. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Reference Figures 1-6 An improved anti-clogging blood purification dialyzer includes a dialyzer body 1, a filter box 3 fixedly installed on the top of the dialyzer body 1, an output tube 2 provided at the bottom of the dialyzer body 1, connection holes 31 at both ends of the filter box 3 communicating with the top of the dialyzer body 1, several filters 32 provided inside the filter box 3, through holes 33 at both ends of the filters 32 adapted to the connection holes 31, an input tube 34 adapted to the connection holes 31 fixedly installed on the top of the filter box 3, a filtration mechanism provided inside the filter 32, and a replacement mechanism provided inside the filter box 3; the replaceable filters 32 can improve the service life of the device, reduce the risk of dialysis interruption due to filter clogging, improve the continuity and stability of the dialysis process, and enhance the reliability of the dialyzer.

[0027] Reference Figure 4 The filtration mechanism includes a filter screen 4 fixedly installed inside the filter 32 near the input end, a filter screen 41 fixedly installed in the center of the filter 32, and a filter screen 42 fixedly installed inside the filter 32 near the output end. The filter pore diameter of the filter screen 4 is larger than that of the filter screen 41, and the filter pore diameter of the filter screen 41 is larger than that of the filter screen 42. The tiered filtration mechanism enables deep filtration of impurities such as microemboli and macromolecules in the blood, effectively preventing clogging of the dialyzer body 1 and ensuring the smooth progress of the dialysis process.

[0028] Reference Figures 3 to 6The replacement mechanism includes a rotating shaft 5 rotatably mounted inside the filter box 3, a connecting frame 51 fixedly mounted on the rotating shaft 5, and a sliding groove 52 opened at one end of the rotating shaft 5 near the dialyzer body 1. Several filters 32 are fixedly connected to the connecting frame 51. A guide tube 54 adapted to the sliding groove 52 is fixedly installed at one end of the filter box 3 near the dialyzer body 1. A limit groove 55 is opened on the guide tube 54. A drive column 56 is slidably installed inside the guide tube 54. A limit block 57 adapted to the limit groove 55 is fixedly installed on the drive column 56. The dialyzer 56 is provided with a guide groove 58, which is composed of vertical grooves and arc-shaped grooves arranged in a circular array. A fixing block 53 adapted to the guide groove 58 is fixedly installed in the slide groove 52. An air bladder 59 is fixedly installed at the end of the guide tube 54 away from the filter box 3. The filter 32 can be switched by squeezing and releasing the air bladder 59 without stopping the machine or opening the filter box 3 to expose the blood to the external environment. This ensures the continuity and sterility of the dialysis process and enhances the safety and applicability of the dialyzer.

[0029] Reference Figure 1 A reset spring 6 is fixedly installed between the drive column 56 and the slide groove 52. An air nozzle 61 is provided on the top of the airbag 59, and an air plug 62 is screwed into the air nozzle 61. By setting the reset spring 6, the stability of the filter 32 during switching is ensured. The reset spring 6 forces the drive column 56 to reset, avoiding switching deviations caused by insufficient system sealing.

[0030] Reference Figure 3 A sealing gasket 7 is provided between both ends of the filter 32 and the filter box 3. The diameter of the sealing gasket 7 is equal to the inner diameter of the filter box 3, and several openings corresponding to the through holes 33 are provided on the sealing gasket 7. By setting the sealing gasket 7, the sealing performance of the filter 32 is ensured when switching, and blood leakage is prevented when the through holes 33 and the connection holes 31 are not aligned, thus ensuring the hygiene and safety of the dialysis process.

[0031] Reference Figures 1 to 4 Both ends of the filter box 3 are provided with backflushing ports 8 that are compatible with the filter 32. The backflushing ports 8 have the same diameter as the connecting holes 31. A sealing plug 81 is screwed onto the backflushing port 8. The filter holes on filter screen 1 4, filter screen 2 41 and filter screen 3 42 are arranged in a frustum shape, and the radius of the end closer to the input end of the filter 32 is larger than that of the other end. After switching, the filter 32 moves to the position of the backflushing port 8 and is rinsed by injecting a solution such as physiological saline, which realizes the effective backflushing of the filter 32. Since the filter holes on the filter screen are frustum shaped, impurities are more easily separated from the filter holes, thereby improving the backflushing effect.

[0032] The specific working principle of this utility model is as follows:

[0033] During use, blood enters the filter box 3 from the top, flows through the input tube 34 and the connection hole 31, and then passes through the filter 32 to remove impurities such as microemboli and large molecules that may clog the dialyzer body 1. The filtered blood flows into the dialyzer body 1 through the connection hole 31 on the other side of the filter box 3 and flows out from the output tube 2 to complete the osmotic purification. When the filter 32 connected to the filter box 3 reaches the end of its service life or when the pressure sensor detects a blockage, the filter 32 can be replaced by the replacement mechanism, thereby achieving uninterrupted replacement of the filter 32, ensuring smooth and stable dialysis without affecting the patient's use. The filtration mechanism consists of three filters with different pore sizes: filter screen 4, filter screen 41, and filter screen 42. This allows for graded filtration, improving the filtration effect. Furthermore, step-by-step filtration can prevent the filters from being quickly clogged by impurities of various sizes, thus extending the service life of the filter 32.

[0034] When filter 32 needs to be replaced, the air bladder 59 can be squeezed. The pressure of the system seal pushes the drive column 56 into the filter box 3 under the guidance of the guide tube 54. The rotating shaft 5 rotates through the action of the guide groove 58 and the fixing block 53. First, under the action of the arc groove, the rotating shaft 5 will drive the connecting frame 51 and filter 32 to rotate. After rotating into place, the air bladder 59 is released, and the drive column 56 resets under pressure. At this time, the fixing block 53 remains in place through the vertical groove. Thus, the filter 32 can be switched by squeezing the air bladder 59. This process does not require stopping the machine or opening the filter box 3 to expose the blood to the external environment. This allows for simple aseptic switching from the outside, ensuring the smooth, stable and safe operation of dialysis. It also ensures safe use. Furthermore, the use of several replaceable filters 32 increases the service life of the equipment, reduces the risk of clogging, improves efficiency and enhances the applicability of the dialyzer.

[0035] When the system is not sealed properly, the automatic reset of the drive column 56 may gradually deviate, making it impossible to switch the filter 32 smoothly. The drive column 56 is forced to reset by the reset spring 6, and the air pressure of the airbag 59 can be balanced by the air nozzle 61 when the airbag is not in normal working condition, thereby ensuring the stability during switching. By setting the sealing gasket 7, it can be further ensured that blood will not leak into the filter box 3 when the through hole 33 is not aligned with the connection hole 31 during switching, thus ensuring hygiene and safety during dialysis.

[0036] After switching filter 32, the used filter 32 is moved to the backwash port 8. The sealing plug 81 can be opened, and physiological saline or other solutions can be injected from the original output end for rinsing. At this time, since the filter holes on the filter screen are frustoconical, the filtered impurities are more easily separated from the filter holes, thereby achieving a better backwashing effect. The backwashed filter 32 can be further recycled to improve the service life of the dialyzer and ensure its safe use.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An improved anti-clogging blood purification dialyzer, comprising a dialyzer body (1), characterized in that, A filter box (3) is fixedly installed on the top of the dialyzer body (1), and an output tube (2) is provided at the bottom of the dialyzer body (1). Both ends of the filter box (3) are provided with connection holes (31) that communicate with the top of the dialyzer body (1). Several filters (32) are provided inside the filter box (3). Both ends of the filters (32) are provided with through holes (33) that are adapted to the connection holes (31). An input tube (34) that is adapted to the connection holes (31) is fixedly installed on the top of the filter box (3). A filtration mechanism is provided inside the filter (32), and a replacement mechanism is provided inside the filter box (3).

2. The improved anti-clogging blood purification dialyzer according to claim 1, characterized in that, The filtration mechanism includes a filter screen one (4) fixedly installed inside the filter (32) near the input end, a filter screen two (41) fixedly installed inside the filter (32) at the center position, and a filter screen three (42) fixedly installed inside the filter (32) near the output end. The filter hole diameter of the filter screen one (4) is larger than that of the filter hole diameter of the filter screen two (41), and the filter hole diameter of the filter screen two (41) is larger than that of the filter hole diameter of the filter screen three (42).

3. The improved anti-clogging blood purification dialyzer according to claim 2, characterized in that, The replacement mechanism includes a rotating shaft (5) rotatably mounted inside the filter box (3), a connecting frame (51) fixedly mounted on the rotating shaft (5), and a groove (52) formed at one end of the rotating shaft (5) near the dialyzer body (1). Several filters (32) are fixedly connected to the connecting frame (51). A guide tube (54) adapted to the groove (52) is fixedly mounted at one end of the filter box (3) near the dialyzer body (1). A limiting groove (55) is formed on the guide tube (54). A drive column (56) is slidably installed inside the guide tube (54). A limiting block (57) adapted to the limiting groove (55) is fixedly installed on the drive column (56). A guide groove (58) is opened on the drive column (56). The guide groove (58) is composed of vertical grooves and arc-shaped grooves connected end to end in a ring array. A fixing block (53) adapted to the guide groove (58) is fixedly installed inside the sliding groove (52). An air bag (59) is fixedly installed at the end of the guide tube (54) away from the filter box (3).

4. The improved anti-clogging blood purification dialyzer according to claim 3, characterized in that, A return spring (6) is fixedly installed between the drive column (56) and the slide groove (52). An air nozzle (61) is provided on the top of the airbag (59), and an air plug (62) is screwed into the air nozzle (61).

5. The improved anti-clogging blood purification dialyzer according to claim 3, characterized in that, Sealing gaskets (7) are provided between both ends of the filter (32) and the filter box (3). The diameter of the sealing gasket (7) is equal to the inner diameter of the filter box (3), and the sealing gasket (7) has several openings corresponding to the through hole (33).

6. The improved anti-clogging blood purification dialyzer according to claim 2, characterized in that, Both ends of the filter box (3) are provided with backflush ports (8) that are compatible with the filter (32). The backflush ports (8) have the same diameter as the connecting hole (31). A sealing plug (81) is screwed onto the backflush port (8). The filter holes on the first filter screen (4), the second filter screen (41) and the third filter screen (42) are arranged in a frustum shape, and the radius of the end closer to the input end of the filter (32) is larger than that of the other end.

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