Nanometer dialysis membrane for hemodialyzer

Abstract

The nanometer dialysis membrane comprises a main cylinder body serving as an installation carrier, blood bins are symmetrically installed at the two ends of the main cylinder body, and dialysate bins are symmetrically installed at the ends, away from the main cylinder body, of the two blood bins. A plurality of circles of purification components are sequentially arranged in the main cylinder body from the center to the edge part, each circle of purification component comprises nanofiber membrane tubes with different numbers, the two ends of the nanofiber membrane tubes are communicated with the interiors of the two blood bins respectively, and spiral battens are arranged on the outer circle parts of the plurality of circles of purification components. According to the utility model, the spiral strip plate is arranged in the gap between the two adjacent circles of nanofiber membrane tubes, so that dialysate entering the main cylinder body flows in the gap between the two adjacent circles of nanofiber membrane tubes in a spiral form, and the flowing path of the dialysate in the main cylinder body is greatly increased; therefore, the blood purification efficiency of the nano dialysis membrane is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of blood purification, in particular to a nano dialysis membrane for a hemodialyzer. Background Art

[0002] When blood flows into the shell from the liquid inlet of the shell, through the polymer dialysis membrane in the shell, by using the solute concentration difference on both sides of the polymer dialysis membrane, through osmosis, diffusion and ultrafiltration, macromolecular substances such as blood cells and proteins in the blood are intercepted, while medium and small molecular substances such as electrolytes and water are separated from the blood and discharged through the liquid outlet of the shell, and the purified blood is transfused back into the patient's body to achieve the effect of removing metabolites and toxic substances and correcting the disorders of water and electrolyte balance.

[0003] Existing hemodialyzers often directly bind several groups of nano dialysis membrane tubes together for use, which makes the flow rate of dialysis fluid in several groups of nano dialysis membrane tubes less, and the purification effect on blood is also very limited; at the same time, the dialysis fluid in the existing hemodialyzer directly flows from one end of the hemodialyzer to the other end, making the purification time of the dialysis fluid on the blood limited, which also increases the overall blood purification time, thus reducing the purification efficiency of the entire hemodialyzer on the patient's blood. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a nano dialysis membrane for a hemodialyzer to solve the problems put forward in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A nano dialysis membrane for a hemodialyzer, including a main cylinder as an installation carrier, blood storage chambers are symmetrically installed at both ends of the main cylinder, dialysis fluid storage chambers are symmetrically installed at the ends of the two blood storage chambers far away from the main cylinder, several circles of purification components are sequentially arranged from the center to the edge part inside the main cylinder, and each circle of purification components respectively includes different numbers of nanofiber membrane tubes. Both ends of the several groups of nanofiber membrane tubes are respectively communicated with the inside of the two blood storage chambers. Spiral strip plates are arranged at the outer circle parts of the several circles of purification components. A communication component is arranged inside the blood storage chamber. The two ends inside the main cylinder are respectively communicated with the inside of the two dialysis fluid storage chambers through the two communication components. A dialysis fluid pipe joint is installed at the center position of the end of the dialysis fluid storage chamber far away from the blood storage chamber. A joint pipe is installed at the end of the dialysis fluid storage chamber far away from the blood storage chamber, and the end of the joint pipe close to the main cylinder is communicated with the inside of the blood storage chamber.

[0006] Preferably, the inner diameters of the several circles of purification components gradually increase from the center part to the edge part of the main cylinder, and the number of nanofiber membrane tubes in each circle of purification components also gradually increases in sequence.

[0007] Preferably, the connecting component includes several turns of liquid guiding short tubes, and the several turns of liquid guiding short tubes are offset from the several turns of nanofiber membrane tubes. The two ends of the liquid guiding short tube are respectively communicated with the inside of the main cylinder and the dialysate chamber.

[0008] Preferably, the inner diameters of several groups of the spiral strip plates increase successively from the central part to the edge part of the main cylinder, and arc-shaped clamping grooves adapted to the nanofiber membrane tubes are evenly formed on both sides of the spiral strip plates.

[0009] Preferably, the positions of the two joint tubes on the two dialysate chambers are different, and the two joint tubes are symmetrically distributed about the center.

[0010] Preferably, the inner diameter of the nanofiber membrane tube is 150 μm - 200 μm, the wall thickness is 30 μm - 35 μm, and the length of the nanofiber membrane tube is 20 - 35 cm.

[0011] Preferably, the width of the spiral strip plate is 1 mm - 1.5 mm, and the vertical height of the spiral strip plate is less than that of the nanofiber membrane tube.

[0012] Advantageous Effects

[0013] Compared with the prior art, the present utility model provides a nano dialysis membrane for a hemodialyzer, having the following advantageous effects:

[0014] 1. In the present utility model, several groups of nanofiber membrane tubes are arranged in several turns, and a large gap is left between adjacent two turns of nanofiber membrane tubes. The dialysate enters the dialysate chamber through a group of dialysate tube joints, then enters the inside of the main cylinder through the liquid guiding short tube connected to this group of dialysate chambers, and gradually flows into the gap between adjacent two turns of nanofiber membrane tubes, so that the dialysate can fully contact each turn of nanofiber membrane tube, thereby improving the purification effect of the nanofiber membrane tube on blood.

[0015] 2. In the present utility model, spiral strip plates are arranged in the gap between adjacent two turns of nanofiber membrane tubes, so that the dialysate entering the inside of the main cylinder flows in a spiral form in the gap between adjacent two turns of nanofiber membrane tubes, thereby greatly increasing the flow path of the dialysate inside the main cylinder, and thus improving the purification efficiency of the nano dialysis membrane on blood. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the front view of the present utility model;

[0017] Figure 2 is the partial front sectional view of the present utility model;

[0018] Figure 3 is the top sectional view of the dialysate chamber of the present utility model;

[0019] Figure 4 It is a top view cross-sectional view of the main cylinder of the present utility model;

[0020] Figure 5 It is a three-dimensional schematic diagram of the spiral strip of the present utility model;

[0021] Figure 6 For the present utility model Figure 2 An enlarged view of part A.

[0022] In the figure:

[0023] 10. Main cylinder; 11. Nanofiber membrane tube; 12. Spiral strip;

[0024] 20. Blood chamber; 21. Short liquid guide tube;

[0025] 30. Dialysate chamber; 31. Dialysate tube joint; 32. Connector tube. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] As Figures 1-6 shown, a nano dialysis membrane for a hemodialyzer includes a main cylinder 10 as an installation carrier. Blood chambers 20 are symmetrically installed at both ends of the main cylinder 10. Dialysate chambers 30 are symmetrically installed at one end of the two groups of blood chambers 20 away from the main cylinder 10. A number of purification components are sequentially arranged from the center to the edge part inside the main cylinder 10, and each circle of purification components respectively includes a different number of nanofiber membrane tubes 11. Both ends of the several groups of nanofiber membrane tubes 11 are respectively communicated with the inside of the two groups of blood chambers 20. Spiral strips 12 are arranged at the outer ring part of the several circles of purification components. A connecting component is arranged inside the blood chamber 20. The two ends inside the main cylinder 10 are respectively communicated with the inside of the two groups of dialysate chambers 30 through the two connecting components. A dialysate tube joint 31 is installed at the center position of one end of the dialysate chamber 30 away from the blood chamber 20. A connector tube 32 is installed at one end of the dialysate chamber 30 away from the blood chamber 20, and one end of the connector tube 32 close to the main cylinder 10 is communicated with the inside of the blood chamber 20.

[0028] In this embodiment, the inner diameters of several circles of purification components gradually increase from the central part to the edge part of the main cylinder 10, and the number of nanofiber membrane tubes 11 in each circle of purification components also gradually increases in sequence, which helps to ensure the number of nanofiber membrane tubes 11 inside the main cylinder 10 while leaving enough gaps between two adjacent circles of nanofiber membrane tubes 11 for the dialysate to fully purify the blood inside the nanofiber membrane tubes 11.

[0029] In this embodiment, the connecting component includes several circles of liquid guiding short tubes 21, and several circles of liquid guiding short tubes 21 are staggered with several circles of nanofiber membrane tubes 11. The two ends of the liquid guiding short tubes 21 are respectively communicated with the inside of the main cylinder 10 and the dialysate chamber 30, which helps the dialysate in the dialysate chamber 30 to flow orderly into the gaps between two adjacent circles of nanofiber membrane tubes 11.

[0030] In this embodiment, the inner diameters of several groups of spiral strip plates 12 gradually increase from the central part to the edge part of the main cylinder 10 in sequence, and arc-shaped clamping grooves adapted to the nanofiber membrane tubes 11 are evenly arranged on both sides of the spiral strip plates 12, which helps each group of spiral strip plates 12 to fit tightly with two adjacent circles of nanofiber membrane tubes 11.

[0031] In this embodiment, the positions of the two groups of joint tubes 32 on the two groups of dialysate chambers 30 are different, and the two groups of joint tubes 32 are centrosymmetrically distributed, which helps the blood to stably flow into the inside of each group of nanofiber membrane tubes 11.

[0032] In this embodiment, the inner diameter of the nanofiber membrane tube 11 is 150μm - 200μm, the wall thickness is 30μm - 35μm, and the length of the nanofiber membrane tube 11 is 20 - 35 cm, which helps to ensure the purification effect of the nanofiber membrane tube 11 on the blood.

[0033] In this embodiment, the width of the spiral strip plate 12 is 1mm - 1.5mm, and the vertical height of the spiral strip plate 12 is less than that of the nanofiber membrane tube 11, which helps to leave enough space between two adjacent circles of nanofiber membrane tubes 11 for the dialysate to flow through.

[0034] Working principle: When in use, blood enters the top group of blood storage chambers 20 through a group of connecting tubes 32 at the top, and then enters each loop of nanofiber membrane tubes 11 from within this group of blood storage chambers 20. After that, the blood converges from the other end of the nanofiber membrane tubes 11 into the bottom group of blood storage chambers 20 and is discharged through a group of connecting tubes 32 at the bottom. During this process, dialysis fluid is injected into the bottom group of dialysis fluid storage chambers 30 through a group of dialysis fluid tube connectors 31 at the bottom. Then, the dialysis fluid flows into the gaps between adjacent two loops of nanofiber membrane tubes 11 through the short liquid guide tubes 21. Subsequently, the dialysis fluid flows spirally upward along the guiding direction of the spiral strip 12, and at the same time gradually purifies the blood located inside the nanofiber membrane tubes 11. Finally, it enters the top group of dialysis fluid storage chambers 30 and is discharged from the top group of dialysis fluid tube connectors 31.

[0035] It should be noted that in this article, relational terms such as first and second 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 term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the said element.

[0036] Although embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A nanodialysis membrane for a hemodialyzer, comprising a main cylinder (10) as a mounting carrier, characterized in that: The two ends of the main cylinder (10) are symmetrically installed with blood bins (20), and the ends of the two groups of blood bins (20) away from the main cylinder (10) are symmetrically installed with dialysate bins (30). The interior of the main cylinder (10) is provided with a plurality of circles of purification components in sequence from the center to the edge, and each circle of purification components comprises a different number of nanofiber membrane tubes (11). The two ends of the plurality of groups of nanofiber membrane tubes (11) are respectively connected to the interior of the two groups of blood bins (20), and the outer circles of the plurality of circles of purification components are all provided with spiral The main cylinder (10) is provided with a connecting component inside, and the two ends inside the main cylinder (10) are respectively connected with the interiors of the two groups of dialysate tanks (30) through two groups of connecting components. A dialysate pipe joint (31) is installed at the center position of one end of the dialysate tank (30) away from the blood tank (20). A joint pipe (32) is installed at one end of the dialysate tank (30) away from the blood tank (20), and the end of the joint pipe (32) close to the main cylinder (10) is connected with the interior of the blood tank (20).

2. The nanodialysis membrane for a hemodialyzer according to claim 1, characterized in that: The inner diameters of the plurality of purification components gradually increase from the center to the edge of the main cylinder (10), and the number of nanofiber membrane tubes (11) in each purification component circle also gradually increases.

3. The nanodialysis membrane for a hemodialyzer according to claim 1, characterized in that: The connecting component comprises a plurality of circles of short liquid-conducting tubes (21), and the plurality of circles of short liquid-conducting tubes (21) and the plurality of circles of nanofiber membrane tubes (11) are offset from each other, and the two ends of the short liquid-conducting tubes (21) are respectively connected to the interior of the main cylinder (10) and the dialysate tank (30).

4. The nanodialysis membrane for a hemodialyzer according to claim 1, characterized in that: The inner diameters of the plurality of groups of spiral strips (12) increase sequentially from the center to the edge of the main cylinder (10), and arc-shaped grooves matching the nanofiber membrane tube (11) are evenly provided on both sides of the spiral strips (12).

5. The nanodialysis membrane for a hemodialyzer according to claim 1, characterized in that: The two groups of connecting tubes (32) are located at different positions on the two groups of dialysate tanks (30), and the two groups of connecting tubes (32) are distributed symmetrically with respect to the center.

6. The nanodialysis membrane for a hemodialyzer according to claim 1, characterized in that: The inner diameter of the nanofiber membrane tube (11) is between 150 μm and 200 μm, the wall thickness is between 30 μm and 35 μm, and the length of the nanofiber membrane tube (11) is between 20 and 35 cm.

7. The nanodialysis membrane for a hemodialyzer according to claim 1, characterized in that: The width of the spiral strip (12) is between 1 mm and 1.5 mm, and the vertical height of the spiral strip (12) is smaller than that of the nanofiber membrane tube (11).

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