Hemodialyzer with good ultrafiltration rate

Abstract

The utility model discloses a hemodialyzer with good ultrafiltration rate relates to hemodialyzer technical field, the utility model discloses a main pipe is provided with adjusting mechanism, dialysis mechanism and fixed establishment on the main pipe, adjusting mechanism includes adjusting assembly, sealing assembly and connecting assembly, and adjusting assembly includes the adjusting shell setting on the main pipe, and the adjusting shell fixedly connected with blood transfusion hose, and the blood transfusion hose fixedly connected with fixed ring, and the adjusting shell is equipped with a plurality of card slots, and the fixed ring fixedly connected with the swing block, and the swing block slidingly connected with the clamping block, and the clamping block fixedly connected with the first spring, and the first spring is fixedly connected with the swing block, and the clamping block is slidingly connected with the card slot. The utility model discloses through adjusting mechanism, through the rotation swing block drive fixed ring and make blood transfusion hose twist reach the effect of blood flow limiting, cooperate first spring and make the clamping block card in proper card slot complete the self -defined adjustment, so that personnel can adjust the suitable blood delivery according to the demand.

Description

Technical Field

[0001] This utility model belongs to the field of hemodialysis device technology, and in particular relates to a hemodialysis device with good ultrafiltration rate. Background Technology

[0002] A hemodialysis machine, or dialyzer for short, is a conduit and container for solute exchange between blood and dialysate. It is a key part of hemodialysis. The dialyzer is mainly composed of a support structure and a dialysis membrane, which is an important component. It is a semi-permeable membrane that only allows molecules smaller than the membrane pore size to pass through. There are two types of membrane materials: modified cellulose membranes and synthetic membranes. Both can be made into high-flux dialyzers.

[0003] However, some hemodialysis machines have a device on the transfusion tubing that can adjust the blood flow. This device usually uses a plastic clamp to squeeze the transfusion tubing downwards. Its structure is relatively simple, which limits the range of adjustable blood flow. This makes it difficult for patients or medical staff to adjust the blood delivery volume more precisely when needed. Utility Model Content

[0004] The purpose of this invention is to provide a hemodialysis device with good ultrafiltration rate. By setting an adjustment mechanism, the rotating block drives the fixed ring to twist the blood transfusion tubing to achieve the effect of blood flow restriction. With the help of the first spring, the locking block is locked in the appropriate slot to complete the custom adjustment. This solves the problem that the structure is relatively simple and the degree of adjustable blood flow is limited.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a hemodialysis device with good ultrafiltration rate, including a main tube, on which an adjustment mechanism, a dialysis mechanism and a fixing mechanism are provided;

[0007] The adjustment mechanism includes an adjustment component, a sealing component, and a connecting component. The adjustment component includes an adjustment housing disposed on the main pipe. A blood transfusion tubing is fixedly connected to the inner wall of the adjustment housing. A fixing ring is fixedly connected to the outer wall of the blood transfusion tubing. Several slots are formed on the outer wall of the adjustment housing. A rotating block is fixedly connected to the outer wall of the fixing ring. A locking block is slidably connected to the inner wall of the rotating block. A first spring is fixedly connected to the inner wall of the locking block. The bottom end of the first spring is fixedly connected to the inner wall of the rotating block. The outer wall of the locking block is slidably connected to the inner wall of the slot.

[0008] Furthermore, the sealing assembly includes two sealing sleeves threaded to the top and bottom of the main pipe, and sealing rings are fixedly connected to both the top and bottom of the main pipe.

[0009] Furthermore, the connecting assembly includes two connecting tubes fixedly connected to two sealing shells on opposite sides of each other. The bottom end of the connecting tube on the lower side is fixedly connected to the end of the blood transfusion tubing, and the top end of the connecting tube on the upper side is fixedly connected to an inlet tube.

[0010] Furthermore, the dialysis device includes a diversion assembly and a liquid outlet assembly. The diversion assembly includes a flow diffuser shell fixedly connected to the outer wall of the main tube. A liquid inlet pipe is fixedly connected to the right side of the flow diffuser shell. Several diversion ports are opened on the outer wall of the main tube.

[0011] Furthermore, the liquid outlet assembly includes a liquid outlet formed on the outer wall of the main pipe, a liquid outlet pipe is fixedly connected to the outer wall of the main pipe, and hollow fiber assemblies are fixedly connected to the inner walls of both sealing sleeves.

[0012] Furthermore, the fixing mechanism includes a limiting component and a spring component. The limiting component includes a U-shaped hanging block fixedly connected to the outer wall of the main pipe. The inner wall of the U-shaped hanging block has a limiting groove, and the inner wall of the limiting groove is slidably connected to a limiting block.

[0013] Furthermore, the spring assembly includes a fixing block fixedly connected to the bottom surface of the limiting block, and two second springs are fixedly connected to the inner wall of the U-shaped hanging block, with the right ends of the two second springs fixedly connected to the left side of the fixing block.

[0014] This utility model has the following beneficial effects:

[0015] 1. By setting up an adjustment mechanism, the elasticity of the first spring is utilized to rotate the fixed ring and twist the blood transfusion tubing to achieve the effect of blood flow restriction. In conjunction with the first spring, the locking block is locked in the appropriate slot to complete the custom adjustment. This allows personnel to adjust the appropriate blood delivery volume according to their needs, thus improving the practicality of the device.

[0016] 2. By setting up a dialysis mechanism, the dialysate flowing into the expansion shell through the inlet pipe is divided into multiple parts using multiple diversion ports, which increases the contact area with the hollow fiber assembly, allowing it to better filter out waste materials in the blood and improve the ultrafiltration rate of the device to a certain extent.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0021] Figure 3 This is a front cross-sectional view of the present invention.

[0022] Figure 4 This is a schematic diagram of the adjustment mechanism of this utility model;

[0023] Figure 5 This is a schematic diagram of the fixing mechanism of this utility model;

[0024] Figure 6 for Figure 3 A magnified structural diagram of point A in the middle.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Main tube; 2. Adjustment mechanism; 3. Dialysis unit; 4. Fixing mechanism; 21. Adjustment shell; 22. Transfusion tubing; 23. Fixing ring; 24. Slot; 25. Rotating block; 26. Slotting block; 27. First spring; 28. Sealing sleeve; 29. ​​Sealing ring; 210. Connecting tube; 211. Inlet tube; 31. Diverter shell; 32. Inlet tube; 33. Diverter port; 34. Outlet port; 35. Outlet tube; 36. Hollow fiber assembly; 41. U-shaped hanging block; 42. Limiting groove; 43. Limiting block; 44. Fixing block; 45. Second spring. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-5As shown, this utility model is a hemodialysis device with good ultrafiltration rate, including a main pipe 1. The main pipe 1 is provided with an adjustment mechanism 2, a dialysis mechanism 3, and a fixing mechanism 4. The adjustment mechanism 2 includes an adjustment component, a sealing component, and a connecting component. The adjustment component includes an adjustment shell 21 disposed on the main pipe 1. A blood transfusion tube 22 is fixedly connected to the inner wall of the adjustment shell 21. A fixing ring 23 is fixedly connected to the outer wall of the blood transfusion tube 22. Several slots 24 are opened on the outer wall of the adjustment shell 21. A rotating block 25 is fixedly connected to the outer wall of the fixing ring 23. A locking block 26 is slidably connected to the inner wall of the rotating block 25. A first spring 27 is fixedly connected to the inner wall of the locking block 26. The bottom end of the first spring 27 is fixedly connected to the inner wall of the rotating block 25. The outer wall of the locking block 26 is connected to the slots 24. The inner wall sliding connection and sealing assembly include two threaded sealing sleeves 28 connected to the top and bottom of the main pipe 1. Sealing rings 29 are fixedly connected to both the top and bottom of the main pipe 1. The connecting assembly includes two connecting pipes 210 fixedly connected to the two sealing sleeves 28 on opposite sides. The bottom end of the lower connecting pipe 210 is fixedly connected to the end of the transfusion tubing 22, and the top end of the upper connecting pipe 210 is fixedly connected to an inlet tube 211. By setting an adjustment mechanism 2, the elasticity of the first spring 27 is utilized to rotate the rotating block 25, causing the fixing ring 23 to twist the transfusion tubing 22, thus achieving blood flow restriction. The first spring 27, in conjunction with this mechanism, engages the locking block 26 in a suitable slot 24 to complete custom adjustment, allowing personnel to adjust the flow according to their needs. The dialysis mechanism 3 adjusts the blood delivery volume according to demand, improving the practicality of the device. It includes a diversion assembly and an outlet assembly. The diversion assembly includes a diffuser shell 31 fixedly connected to the outer wall of the main pipe 1. An inlet pipe 32 is fixedly connected to the right side of the diffuser shell 31. Several diversion ports 33 are opened on the outer wall of the main pipe 1. The outlet assembly includes an outlet port 34 opened on the outer wall of the main pipe 1. An outlet pipe 35 is fixedly connected to the outer wall of the main pipe 1. Hollow fiber assemblies 36 are fixedly connected to the inner walls of both sealing shells 28. By setting up the dialysis mechanism 3, the dialysis fluid flowing into the diffuser shell 31 through the inlet pipe 32 is divided into multiple parts using multiple diversion ports 33, increasing the contact area with the hollow fiber assemblies 36 and allowing for better filtration of blood. The waste material improves the ultrafiltration rate of the device to a certain extent. The fixing mechanism 4 includes a limiting component and a spring component. The limiting component includes a U-shaped hanging block 41 fixedly connected to the outer wall of the main pipe 1. A limiting groove 42 is opened on the inner wall of the U-shaped hanging block 41. A limiting block 43 is slidably connected to the inner wall of the limiting groove 42. The spring component includes a fixing block 44 fixedly connected to the bottom surface of the limiting block 43. Two second springs 45 are fixedly connected to the inner wall of the U-shaped hanging block 41. The right ends of the two second springs 45 are fixedly connected to the left side of the fixing block 44. By setting the fixing mechanism 4, medical staff can hang the main pipe 1 on the blood pump or hospital bed through the U-shaped hanging block 41, push the hanging rod into the U-shaped hanging block 41, and push the fixing block 44 to drive the limiting block 43 to slide in the limiting groove 42.The fixing block 44 compresses the two second springs 45, causing the second springs 45 to be in a compressed state. The elastic force of the springs pushes the fixing block 44 tightly against the hanging rod, completing the fixation. The limiting block 43 and the limiting groove 42 are provided to limit the movement of the fixing block 44.

[0029] One specific application of this embodiment is: a hollow fiber assembly 36, which is composed of approximately 1,000 to 10,000 central fiber membranes. A hollow fiber membrane is a membrane with a fibrous shape and self-supporting function. The hollow fiber membrane is made of polysulfone and dimethylacetamide as raw materials, processed into hollow filaments with a hollow inner cavity, and then coated with a highly permeable polymer. It has selective permeation characteristics. Since water vapor, hydrogen, ammonia and carbon dioxide permeate faster, while methane, nitrogen, argon, oxygen and carbon monoxide permeate slower, the fast-permeating and slow-permeating substances are separated. The outer diameter of the hollow fiber filament is usually 500-600 μm and the inner diameter is 200-300 μm. The slender hollow fibers made from the central fiber membrane are bundled together and placed in a transparent cylindrical shell. The two sides are sealed with non-toxic medical polyurethane adhesive and fixed to the shell. The hollow fiber openings are outside the sealing layer, and the outer ends are closed with a dome-shaped cap to form a blood chamber. The top of the cap is open for connecting blood tubing.

[0030] By setting the adjustment mechanism 2, the patient's blood enters the main tube 1 from the inlet tube 211 through the connecting tube 210. After being transported by the hollow fiber assembly 36, and with the help of the dialysis mechanism 3, waste and excess water in the blood are removed, and certain trace amounts of ions required by the human body are delivered in the dialysate. The purified blood enters the transfusion tubing 22 from the lower connecting tube 210. The patient or medical staff can release the locking block 26 from the locking slot 24 by pressing it, and then press the locking block 26 into the rotating block 25. At this time, the first spring 27 is compressed. Rotating the rotating block 25 causes the fixing ring 23 fixed on the transfusion tubing 22 to rotate. Since both ends of the connecting tube 210 are fixed on the transfusion tubing 22, the adjustment mechanism allows the blood to move freely. The section of the transfusion tubing 22 within 21 is twisted into a spiral shape by the rotating fixed ring 23, reducing the space for blood flow and thus regulating blood flow. Once the appropriate flow rate is adjusted, the locking block 26 is released, causing the first spring 27 to elastically return to its original position and engage the locking block 26 in the slot 24, thus fixing the adjusted state. This utilizes the elasticity of the first spring 27 to twist the transfusion tubing 22 by rotating the rotating block 25, thereby limiting blood flow. Combined with the first spring 27, the locking block 26 is engaged in the appropriate slot 24 to complete the custom adjustment. This allows personnel to adjust the appropriate blood delivery volume according to their needs, improving the practicality of the device.

[0031] By setting up the dialysis mechanism 3, the inlet pipe 32 delivers the dialysate into the expansion shell 31. After being diverted by several diversion ports 33, the dialysate is divided into several parts and flows into the main pipe 1 to contact the hollow fiber assembly 36. This removes waste or excess water from the blood flowing within the hollow fiber assembly 36 and carries in some trace ions required by the human body into the hollow fiber assembly 36 to mix with the blood. The dialysate mixed with waste and excess water is discharged from the outlet pipe 35 through the outlet port 34. This achieves the goal of using multiple diversion ports 33 to divide the dialysate flowing into the expansion shell 31 through the inlet pipe 32 into multiple parts, increasing the contact area with the hollow fiber assembly 36, and enabling it to better filter out waste in the blood, thereby improving the ultrafiltration rate of the device to a certain extent.

[0032] By setting up the fixing mechanism 4, medical staff can hang the main tube 1 on the blood pump or hospital bed through the U-shaped hanging block 41. Pushing the hanging rod into the U-shaped hanging block 41 pushes the fixing block 44 to drive the limiting block 43 to slide in the limiting groove 42. The fixing block 44 compresses the two second springs 45, so that the second springs 45 are in a compressed state. The elastic force of the spring pushes the fixing block 44 to stick tightly to the hanging rod, thus completing the fixation. The limiting block 43 and the limiting groove 42 play a limiting role for the fixing block 44.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A hemodialysis machine with good ultrafiltration rate, comprising a main pipe (1), wherein the main pipe (1) is provided with an adjustment mechanism (2), a dialysis mechanism (3) and a fixing mechanism (4), characterized in that: The adjustment mechanism (2) includes an adjustment component, a sealing component, and a connecting component. The adjustment component includes an adjustment housing (21) disposed on the main pipe (1). A blood transfusion tube (22) is fixedly connected to the inner wall of the adjustment housing (21). A fixing ring (23) is fixedly connected to the outer wall of the blood transfusion tube (22). A plurality of slots (24) are provided on the outer wall of the adjustment housing (21). A rotating block (25) is fixedly connected to the outer wall of the fixing ring (23). A locking block (26) is slidably connected to the inner wall of the rotating block (25). A first spring (27) is fixedly connected to the inner wall of the locking block (26). The bottom end of the first spring (27) is fixedly connected to the inner wall of the rotating block (25). The outer wall of the locking block (26) is slidably connected to the inner wall of the slot (24).

2. The hemodialysis device with good ultrafiltration rate according to claim 1, characterized in that, The sealing assembly includes two sealing sleeves (28) threaded to the top and bottom of the main pipe (1), and sealing rings (29) are fixedly connected to the top and bottom of the main pipe (1).

3. A hemodialysis device with good ultrafiltration rate according to claim 2, characterized in that, The connection assembly includes two connecting tubes (210) fixedly connected to the two sealing shells (28) on opposite sides. The bottom end of the lower connecting tube (210) is fixedly connected to the end of the transfusion tubing (22), and the top end of the upper connecting tube (210) is fixedly connected to an inlet tube (211).

4. A hemodialysis device with good ultrafiltration rate according to claim 3, characterized in that, The dialysis unit (3) includes a diversion assembly and a liquid outlet assembly. The diversion assembly includes a diffuser shell (31) fixedly connected to the outer wall of the main pipe (1). A liquid inlet pipe (32) is fixedly connected to the right side of the diffuser shell (31). Several diversion ports (33) are opened on the outer wall of the main pipe (1).

5. A hemodialysis device with good ultrafiltration rate according to claim 4, characterized in that, The liquid outlet assembly includes a liquid outlet (34) opened on the outer wall of the main pipe (1), a liquid outlet pipe (35) fixedly connected to the outer wall of the main pipe (1), and hollow fiber assemblies (36) fixedly connected to the inner walls of the two sealing sleeves (28).

6. A hemodialysis device with good ultrafiltration rate according to claim 5, characterized in that, The fixing mechanism (4) includes a limiting component and a spring component. The limiting component includes a U-shaped hanging block (41) fixedly connected to the outer wall of the main pipe (1). The inner wall of the U-shaped hanging block (41) has a limiting groove (42), and the inner wall of the limiting groove (42) is slidably connected to a limiting block (43).

7. A hemodialysis device with good ultrafiltration rate according to claim 6, characterized in that, The spring assembly includes a fixing block (44) fixedly connected to the bottom surface of the limiting block (43), and two second springs (45) fixedly connected to the inner wall of the U-shaped hanging block (41), with the right ends of the two second springs (45) fixedly connected to the left side of the fixing block (44).

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