Hollow fiber hemodialyzer with adjustable connecting assembly

Abstract

The utility model relates to the field of dialyzers, and discloses a hollow fiber hemodialyzer with an adjustable connecting assembly, which comprises a dialyzer shell, hollow fibers for hemodialysis are arranged in the dialyzer shell, an artery end tube is arranged at the top of the dialyzer shell, and a vein end tube is arranged at the bottom of the dialyzer shell. Sealing covers are arranged at the top and the bottom of the dialyzer shell in a threaded mode, and adjustable connecting assemblies are arranged on the two sealing covers; the connecting pipe, the connecting cylinder, the rotating ring and the limiting ring are arranged at the joint of the artery end pipe and the sealing cover and the joint of the vein end pipe and the sealing cover, the artery end pipe and the vein end pipe are fixed through the rotating ring, and the rotating ring rotates in the rotating groove in the connecting cylinder, so that the joint of the artery end pipe and the vein end pipe and the dialyzer shell can rotate or adjust the direction; the dialysis tube can effectively reduce the risk of breakage or damage of the tube, is beneficial to maintaining smooth flow of blood, can maintain stable blood flow even if a patient moves or adjusts the posture, and ensures that the dialysis effect is not affected.

Description

Technical Field

[0001] This application relates to the field of dialyzers, and particularly to a hollow fiber hemodialyzer with an adjustable connection component. Background Art

[0002] A hollow fiber hemodialyzer is an important device used in hemodialysis technology. It is mainly used to replace the function of the kidneys, help patients with renal failure remove metabolic wastes and excess water from the blood, and at the same time maintain electrolyte and acid-base balance;

[0003] The existing publication number CN215460713U discloses a hemodialyzer, including a dialyzer housing, and sealing layers are fixedly sleeved at both ends of the dialyzer housing. The upper and lower ends of the present utility model have an asymmetric structure. By laterally arranging the arterial end tube, the problem of tube kinking during dialysis can be effectively solved. At the same time, the impact of blood on the end face of the dialyzer is reduced, the damage to blood cells is smaller, and it is not easy to coagulate. Through the setting of the swirl port, the blood entering the arterial end is more evenly distributed and the pressure is more uniform. And through the chamfered curved surface structure, the venous blood return is smoother and the hemodynamics is better;

[0004] In view of the above-mentioned prior art, by laterally arranging the arterial end tube, the flow of blood inside the dialyzer is optimized, the dialysis efficiency is improved, and the risk of blood stasis and coagulation is reduced. However, the arterial end tube is fixedly connected to the dialyzer housing. During dialysis, the patient will change positions or move within the treatment area. When the patient moves during dialysis, the connection of the arterial end tube is still prone to twisting or folding, increasing blood flow resistance and affecting dialysis efficiency. To solve the above problems, a hollow fiber hemodialyzer with an adjustable connection component is now proposed.

[0005] The above information disclosed in this background art is only used to increase the understanding of the background art of this application. Therefore, it may include prior art that is not known to those of ordinary skill in the art. Summary of the Utility Model

[0006] To solve the problems of the dialyzer, this application provides a hollow fiber hemodialyzer with an adjustable connection component.

[0007] The technical solution adopted by the hollow fiber hemodialyzer with an adjustable connection component provided by this application is as follows:

[0008] A hollow fiber hemodialyzer with an adjustable connection component, comprising a dialyzer housing, wherein hollow fibers for hemodialysis are arranged inside the dialyzer housing, an arterial end tube is arranged at the top of the dialyzer housing, a venous end tube is arranged at the bottom of the dialyzer housing, sealing covers are threadedly arranged at both the top and the bottom of the dialyzer housing, adjustable connection components are arranged on both of the sealing covers, and one ends of the arterial end tube and the venous end tube close to the dialyzer housing are both fixed to the connection components;

[0009] The connection component includes a connection cylinder, a rotating ring, a connection tube, and a limiting ring. The connection tube communicates with the inner cavity of the dialyzer housing. The limiting ring is fixed on the connection tube. A limiting groove for limiting the limiting ring is arranged on the sealing cover. The connection cylinder is threadedly connected to the connection tube. A rotating groove for the rotating ring to rotate is arranged on the connection cylinder. The rotating ring is respectively fixed to one ends of the arterial end tube and the venous end tube close to the dialyzer housing. The inner diameter of the arterial end tube is the same as that of the connection tube.

[0010] Preferably, a diversion tube is arranged at the bottom of the connection tube. A diversion piece for diversion and a fixing frame for supporting the diversion piece are arranged inside the diversion tube.

[0011] Preferably, the diversion tube is in a conical shape that enlarges from top to bottom. The extending direction of the diversion piece matches the conical angle of the diversion tube.

[0012] Preferably, a dialysate outflow tube and a dialysate inflow tube are arranged on the dialyzer housing. The dialysate outflow tube is located above the dialysate inflow tube.

[0013] Preferably, when the connection cylinder is threadedly fixed to the connection tube, one end of the arterial end tube is in contact with the top end of the connection tube.

[0014] Preferably, there is a gap between the top of the hollow fiber and the sealing cover located above. The diversion tube is located in the gap and has a space from the top of the hollow fiber.

[0015] In summary, compared with the related art, the present utility model has the following beneficial effects:

[0016] By arranging a connection tube, a connection cylinder, a rotating ring, and a limiting ring at the connection between the arterial end tube and the venous end tube and the sealing cover, both the arterial end tube and the venous end tube are fixed through the rotating ring. The rotating ring rotates in the rotating groove on the connection cylinder, enabling the connection between the arterial end tube and the venous end tube and the dialyzer housing to rotate or adjust the direction. Compared with the related art, the ability to rotate or adjust the direction at the connection between the arterial end tube and the venous end tube and the dialyzer housing can effectively reduce the risk of pipeline breakage or damage. At the same time, it helps to maintain the smooth flow of blood, ensuring a stable blood flow rate even when the patient moves or adjusts the posture, and ensuring that the dialysis effect is not affected. Description of the Drawings

[0017] Figure 1 is a schematic side-sectional structure diagram of an application embodiment;

[0018] Figure 2 is Figure 1 a schematic enlarged structure diagram at position A in

[0019] Figure 3 is a schematic overall structure diagram of an application embodiment.

[0020] Explanation of reference numerals: 1, dialyzer housing; 2, connecting cylinder; 3, hollow fiber; 4, dialysate outflow tube; 5, dialysate inflow tube; 6, rotating ring; 7, sealing cover; 8, connecting tube; 9, arterial end tube; 10, guide vane; 11, guide tube; 12, venous end tube; 13, limiting ring; 14, fixing bracket. Detailed implementation manners

[0021] The following further describes the present application in detail with reference to the Figures 1-3 accompanying drawings.

[0022] An embodiment of the present application discloses a hollow fiber hemodialyzer with an adjustable connection component. Referring to Figures 1-3 , a hollow fiber hemodialyzer with an adjustable connection component includes a dialyzer housing 1. Inside the dialyzer housing 1, there are hollow fibers 3 for hemodialysis. At the top of the dialyzer housing 1, there is an arterial end tube 9, and at the bottom of the dialyzer housing 1, there is a venous end tube 12. Sealing covers 7 are threadedly provided at both the top and bottom of the dialyzer housing 1. Adjustable connection components are provided on both sealing covers 7. One ends of the arterial end tube 9 and the venous end tube 12 close to the dialyzer housing 1 are fixed to the connection components;

[0023] The connection component includes a connecting cylinder 2, a rotating ring 6, a connecting tube 8, and a limiting ring 13. The connecting tube 8 communicates with the inner cavity of the dialyzer housing 1. The limiting ring 13 is fixed on the connecting tube 8. A limiting groove for limiting the limiting ring 13 is provided on the sealing cover 7. The connecting cylinder 2 is threadedly connected to the connecting tube 8. A rotating groove for the rotating ring 6 to rotate is provided on the connecting cylinder 2. The rotating ring 6 is respectively fixed to one ends of the arterial end tube 9 and the venous end tube 12 close to the dialyzer housing 1. The inner diameter of the arterial end tube 9 is the same as the inner diameter of the connecting tube 8;

[0024] It should be noted that the arterial end tube 9 and the venous end tube 12 connected to the connecting tube 8 have a certain hardness, which can support and drive the rotating ring 6 to rotate in the rotating groove. The hardness of the arterial end tube 9 and the venous end tube 12 gradually decreases as they are farther away from the connecting tube 8, which can meet the requirement of the rotatable adjustment of the arterial end tube 9 and the venous end tube 12, and the parts with lower hardness can facilitate the distribution and placement of the arterial end tube 9 and the venous end tube 12;

[0025] It should be further noted that the cooperation between the limiting ring 13 and the limiting groove not only fixes the position of the connecting pipe 8, but also further seals the dialyzer housing 1 in cooperation with the sealing cover 7;

[0026] By adopting the above technical solution, blood enters the dialyzer housing 1 through the arterial end pipe 9, flows into the hollow fiber 3, and flows out through the venous end pipe 12 after undergoing mass exchange with the dialysate. During dialysis, when the patient moves or adjusts their posture, under the action of the rotating ring 6, the arterial end pipe 9 and the venous end pipe 12 can rotate to adapt to the angle of the patient's movement or posture adjustment.

[0027] Refer to Figure 2 , a diversion pipe 11 is provided at the bottom of the connecting pipe 8, and a diversion piece 10 for diversion and a fixing frame 14 for supporting the diversion piece 10 are provided in the diversion pipe 11;

[0028] The diversion pipe 11 is in a conical shape that enlarges from top to bottom, and the extending direction of the diversion piece 10 matches the conical angle of the diversion pipe 11;

[0029] It should be noted that the diversion piece 10 is in a spiral shape;

[0030] By adopting the above technical solution, the diversion piece 10 is fixed in the diversion pipe 11 through the fixing frame 14. The spiral diversion piece 10 can make the blood form a spiral flow when entering the dialyzer housing 1, and can distribute the blood more evenly into the dialyzer housing 1, ensuring full contact between the blood and the dialysate, improving the dialysis efficiency. The downwardly expanding conical setting of the diversion pipe 11 can smooth the sudden change in blood flow velocity, avoid the impact of high shear force on the blood when entering the dialyzer housing 1, reduce the damage or deformation of blood cells such as red blood cells, white blood cells and platelets, and the reduction of shear stress helps to maintain the normal flow characteristics of the blood, avoid the increase in blood viscosity caused by blood cell damage, so as to maintain the high permeability of the dialyzer housing 1 and improve the dialysis efficiency.

[0031] Refer to Figure 3 , a dialysate outflow pipe 4 and a dialysate inflow pipe 5 are provided on the dialyzer housing 1, and the dialysate outflow pipe 4 is located above the dialysate inflow pipe 5;

[0032] It should be noted that during use, the flow direction of the dialysate in and out is opposite to the flow direction of the blood;

[0033] By adopting the above technical solution, the dialysate outflow pipe 4 and the dialysate inflow pipe 5 are used for the outflow and inflow of the dialysate in the dialyzer housing 1.

[0034] Refer to Figure 2 , when the connecting cylinder 2 is threadedly fixed to the connecting pipe 8, one end of the arterial end pipe 9 is in contact with the top end of the connecting pipe 8;

[0035] By adopting the above technical solution, one end of the arterial end tube 9 fits against the top end of the connecting tube 8, which can ensure the sealing of the dialyzer housing 1 and prevent excessive residence of blood at the connection between the arterial end tube 9 and the connecting tube 8, facilitating smooth blood flow.

[0036] Referring to Figure 1 , 2 , there is a gap between the top of the hollow fiber 3 and the sealing cap 7 located above. The diversion tube 11 is located within the gap and has a spacing from the top of the hollow fiber 3;

[0037] By adopting the above technical solution, the existence of the gap can reduce the retention of blood at the top of the dialyzer housing 1, prevent the aggregation of blood components such as platelets or plasma proteins in this area, and thereby reduce the risk of thrombus formation. The tapered setting of the diversion tube 11 can guide the blood to flow along the axial direction of the hollow fiber 3, reduce turbulence, ensure the smooth entry of blood into each hollow fiber 3, and improve the dialysis effect.

[0038] The implementation principle of a hollow fiber hemodialyzer with an adjustable connection component in an embodiment of the present application is as follows: During use, blood enters the dialyzer housing 1 from the arterial end tube 9 and flows into the hollow fiber 3. The dialysate enters the outside of the hollow fiber 3 from the dialysate inlet tube 5. After the blood exchanges substances with the dialysate, it flows out from the venous end tube 12, and the dialysate flows out from the dialysate outlet tube 4. During dialysis, when the patient moves or adjusts their posture, under the action of the rotating ring 6, the arterial end tube 9 and the venous end tube 12 can be rotated to adapt to the angle of the patient's movement or posture adjustment, reduce the situation of tube kinking, and ensure that the dialysis effect is not affected.

[0039] Finally, several points should be noted: First, in the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense, which can be a mechanical connection or an electrical connection, or the communication inside two components, and can be directly connected. "Up", "down", "left", "right", etc. are only used to represent relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0040] Second: In the attached drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. Other structures can refer to the general design. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0041] Finally: The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

[0042] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A hollow fiber hemodialyzer with an adjustable connection component, comprising a dialyzer housing (1), characterized in that: Inside the dialyzer housing (1), there are hollow fibers (3) for hemodialysis. At the top of the dialyzer housing (1), there is an arterial end tube (9), and at the bottom of the dialyzer housing (1), there is a venous end tube (12). Sealing caps (7) are threadedly provided at both the top and bottom of the dialyzer housing (1). Adjustable connection components are provided on both of the sealing caps (7). One ends of the arterial end tube (9) and the venous end tube (12) close to the dialyzer housing (1) are fixed to the connection components. The connection component includes a connection cylinder (2), a rotating ring (6), a connection tube (8), and a limiting ring (13). The connection tube (8) communicates with the inner cavity of the dialyzer housing (1). The limiting ring (13) is fixed on the connection tube (8). A limiting groove for limiting the limiting ring (13) is provided on the sealing cap (7). The connection cylinder (2) is threadedly connected to the connection tube (8). A rotating groove for the rotating ring (6) to rotate is provided on the connection cylinder (2). The rotating ring (6) is respectively fixed to one ends of the arterial end tube (9) and the venous end tube (12) close to the dialyzer housing (1). The inner diameter of the arterial end tube (9) is the same as that of the connection tube (8).

2. The hollow fiber hemodialyzer with an adjustable connection component according to claim 1, characterized in that: At the bottom of the connection tube (8), there is a diversion tube (11). Inside the diversion tube (11), there is a diversion piece (10) for diversion and a fixing frame (14) for supporting the diversion piece (10).

3. The hollow fiber hemodialyzer with an adjustable connection component according to claim 2, wherein: The diversion tube (11) is in a conical shape that enlarges from top to bottom. The extending direction of the diversion piece (10) matches the conical angle of the diversion tube (11).

4. The hollow fiber hemodialyzer with an adjustable connection component according to claim 1, characterized in that: On the dialyzer housing (1), there are a dialysate outflow tube (4) and a dialysate inflow tube (5). The dialysate outflow tube (4) is located above the dialysate inflow tube (5).

5. A hollow fiber hemodialyzer with an adjustable connection assembly according to claim 1, characterized in that: When the connection cylinder (2) is threadedly fixed to the connection tube (8), one end of the arterial end tube (9) is in contact with the top end of the connection tube (8).

6. The hollow fiber hemodialyzer with an adjustable connection component according to claim 3, wherein: There is a gap between the top of the hollow fiber (3) and the upper sealing cap (7). The diversion tube (11) is located in the gap and has a space from the top of the hollow fiber (3).

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