A hemodialysis tubing

Abstract

The utility model discloses a kind of hemodialysis pipeline, it is related to hemodialysis technical field.The utility model includes fixed base, the fixed base upper surface is symmetric and inclined and is provided with clamping groove, clamping groove is all installed with clamping structure, clamping structure is all installed with fixed pipe clamp, fixed pipe clamp is all provided with tube barrel, and butt joint is all movably connected in tube barrel, two butt joints larger one end with diameter is connected with pump pipe, and butt joint smaller one end with diameter is all installed with blood guide tube.The utility model is fixed in the tube barrel that is set up in fixed pipe clamp by clamping head clamping, so that butt joint is in the state of being unable to move, is firmly fixed in tube barrel inside, so that the vibration generated by blood pump movement will only act on pump pipe to carry out blood delivery operation, and blood guide tube will not be displaced, to ensure that the movement of blood pump will not affect blood guide tube, improve the stability of blood delivery when dialysis operation.

Description

Technical Field

[0001] This utility model belongs to the field of hemodialysis technology, and specifically relates to a hemodialysis tubing. Background Technology

[0002] A hemodialysis tubing is a medical device used during hemodialysis to connect the dialysis machine to the patient's blood vessels, allowing blood to circulate between the two. The main function of the hemodialysis tubing is to establish an extracorporeal circulation pathway between the patient's blood and the dialysis machine, enabling the blood to be purified in the dialysis machine by passing through the dialyzer to remove metabolic waste, excess water, and electrolytes, before being returned to the patient, thus partially replacing the function of the kidneys.

[0003] In existing technologies, dialysis tubing typically lacks an effective fixing structure, which means that the vibration and movement generated by the blood pump during operation can easily cause displacement of the connected hemodialysis tubing. This displacement can affect the normal progress of hemodialysis and the stability of blood delivery.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model is a hemodialysis tubing, including a fixed base with symmetrical and inclined slots on its upper surface. The slots are arranged horizontally in a figure-eight pattern on the upper surface of the fixed base. Each slot has a snap-fit ​​structure installed in it, and each snap-fit ​​structure has a fixed tube clamp installed in it. Each fixed tube clamp has a tube sleeve inside it, and each tube sleeve has a movable connector that is matched with the diameter of the tube sleeve. The larger diameter end of each of the two connectors is connected to a pump tube so that the pump tube is in a ring shape, so that the external blood pump can be fitted onto the outer circumference of the pump tube. Each smaller diameter end of the connector is equipped with a guide tube.

[0006] The tube has a hierarchical structure inside, which consists of layers, with the diameter of each layer decreasing sequentially. The connector is a three-section structure, with the diameter of each section decreasing sequentially. The larger diameter end of the connector is installed in the larger diameter layer of the hierarchical structure inside the tube, so that the hierarchical structure corresponds to the three-section structure.

[0007] The inner wall of the tube is provided with a positioning groove, and a positioning post is installed on the outer surface of the connector. The positioning post can be inserted into the corresponding positioning groove.

[0008] The snap-fit ​​structure includes a first connector and a second connector. The first connector is installed at the bottom of the slot cavity, and the second connector is installed at the bottom of the fixing clamp.

[0009] The first connector includes a mounting plate, which is installed at the bottom of the slot cavity. The upper surface of the mounting plate is symmetrically mounted with elastic arc plates relative to the central axis, and there are at least two elastic arc plates.

[0010] The second connector includes a second mounting plate, which is installed at the bottom of the fixed pipe clamp. The second mounting plate can be snapped into the slot. A snap-fit ​​ball is installed on the lower surface of the second mounting plate. When the second mounting plate is fully snapped into the slot, the snap-fit ​​ball can snap into the space formed by the elastic arc sheet.

[0011] An arc-shaped opening is provided at the end of the tube with a smaller diameter, and the arc-shaped opening is connected to the end of the hierarchical structure with the smallest diameter.

[0012] The joint between the middle section and the minimum section is provided with a certain inclined arc surface, and the upper end of the elastic arc plate is provided with an arc surface.

[0013] This utility model has the following beneficial effects: 1. This utility model secures the connector to the tube opening on the fixed tube clamp, making the connector immobile and firmly fixed inside the tube. This ensures that the vibration generated by the blood pump's movement only affects the blood delivery operation on the pump tube and does not cause displacement of the guide tube, thus ensuring that the movement of the blood pump does not affect the guide tube and improving the stability of blood delivery during dialysis.

[0014] 2. This utility model uses the interlocking action of the snap-fit ​​ball and the elastic arc plate to allow the fixed pipe clamp to detach from the fixed base when it experiences elastic fatigue, so that a new fixed pipe clamp can be replaced on the fixed base, thus ensuring the fixing effect of the fixed pipe clamp itself and improving its practicality.

[0015] 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

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the fixed pipe clamp structure of this utility model; Figure 3 This is a schematic cross-sectional view of the fixed base structure of this utility model; Figure 4 This is a schematic diagram of the snap-fit ​​structure of this utility model; Figure 5 This is a schematic diagram of the fixed base structure of this utility model; Figure 6 For the present utility model Figure 5 A magnified view of the structure at point A in the middle; Figure 7This is a schematic diagram of the snap-fit ​​connector structure of this utility model.

[0017] Explanation of reference numerals in the attached drawings: 1. Fixed base; 2. Slot; 3. Snap-fit ​​structure; 4. Fixed pipe clamp; 5. Pipe tube; 6. Connector; 7. Pump pipe; 8. Guide tube; 9. Positioning groove; 10. Positioning post; 11. First connecting piece; 12. Second connecting piece; 13. Mounting plate one; 14. Elastic arc sheet; 15. Mounting plate two; 16. Snap-fit ​​ball. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-7 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0019] Please see Figure 1 , Figure 2 , Figure 3 , Figure 5 As shown: This embodiment provides a hemodialysis tubing, including a fixed base 1. The upper surface of the fixed base 1 has symmetrical and inclined slots 2. The inside of the slots 2 is vertically T-shaped, and the slots 2 are arranged horizontally in a figure-eight pattern on the upper surface of the fixed base 1. Each slot 2 has a snap-fit ​​structure 3 installed in it, and each snap-fit ​​structure 3 has a fixed tube clamp 4 installed on it. Each fixed tube clamp 4 has a tube sleeve 5 installed in it, and each tube sleeve 5 has a movable connector 6 that is matched with the diameter of the tube sleeve 5. The larger diameter end of each of the two connectors 6 is connected to a pump tube 7. Under the action of the slots, the fixed tube clamps and connectors are installed in a figure-eight pattern so that when the pump tube 7 is installed on the connector, it is in a ring shape, so that the external blood pump can be fitted on the outer circumference of the pump tube 7. Each smaller diameter end of the connector 6 is equipped with a guide tube 8.

[0020] The fixed base 1 is installed on the dialysis instrument, and the fixed tube clamp 4 is installed on the fixed base 1 using the snap-fit ​​structure 3. When dialysis is required, the connector 6 of the connecting tube 8 and the pump tube 7 is snapped into the tube 5 to fix the connector 6 and make the pump tube 7 into a ring shape, which makes it easier to fit the pump tube 7 onto the blood pump and make it fit better. When the blood pump is in operation, the connector 6 is fixed in a fixed state because the tube 5 is T-shaped. This ensures that the vibration generated by the movement of the blood pump will only act on the pump tube 7 to deliver blood and will not cause the connecting tube 8 to move. This ensures that the movement of the blood pump will not affect the connecting tube 8 and improves the stability of blood delivery during dialysis.

[0021] like Figure 1 , Figure 2 As shown, the tube 5 has a hierarchical structure with three layers, and the diameters of the three layers decrease sequentially. The connector 6 is a three-section structure with the diameters of the three sections decreasing sequentially. The larger diameter end of the connector 6 is installed in the layer with the largest diameter in the tube 5, so that the hierarchical structure corresponds one-to-one with the three-section structure. During installation, the largest diameter end of the connector 6 is embedded in the layer with the largest inner diameter in the three-layer structure of the tube 5, and the remaining parts are precisely fitted and installed in the corresponding layer of the tube 5 in descending order of diameter, so that the connector 6 is firmly fixed inside the tube 5 and cannot move.

[0022] like Figure 2 , Figure 7 As shown, the inner wall of the tube 5 is provided with a positioning groove 9, and the outer surface of the connector 6 is equipped with a positioning post 10. The positioning post 10 can be inserted into the corresponding positioning groove 9. When the connector 6 is fully inserted into the tube 5, the positioning post 10 installed on the connector 6 will be inserted into the positioning groove 9 at the same time to further improve the fixing firmness of the connector 6. At the same time, by correspondingly engaging the positioning post 10 with the positioning groove 9, it is also convenient for personnel to quickly and accurately install the connector 6 into the tube 5.

[0023] like Figure 3-7As shown, the snap-fit ​​structure 3 includes a first connector 11 and a second connector 12. The first connector 11 is installed at the bottom of the inner cavity of the slot 2, and the second connector 12 is installed at the bottom of the fixing clamp 4. The first connector 11 includes a mounting plate 13, which is installed at the bottom of the inner cavity of the slot 2. Elastic arc plates 14 are symmetrically installed on the upper surface of the mounting plate 13 relative to the central axis, and there are at least two elastic arc plates 14. The second connector 12 includes a mounting plate 15, which is installed at the bottom of the fixing clamp 4. The mounting plate 15 can snap into the slot 2, and its lower surface is fitted with… When the mounting plate 15 is fully engaged in the slot 2, the snap-fit ​​ball 16 can engage in the space formed by the elastic arc plate 14. In the initial state, the mounting plate 15 is in the slot 2, and the snap-fit ​​ball 16 is wrapped by the elastic arc plate 14, so that the fixing clamp 4 is installed on the fixing base 1 to fix the connector 6. However, after the fixing clamp 4 has been used for a long time, its own elasticity will fatigue and it will no longer be able to firmly fix its connector 6. At this time, the operator can apply an upward pulling force to the fixing clamp 4. This pulling force will cause the snap-fit ​​ball 16 to engage with the elastic arc plate 14. The plate 14 generates an outward compressive force. When the tension is large enough, the elastic arc plate 14 will undergo elastic deformation and open to both sides on the upper surface of the mounting plate 13, allowing the snap-fit ​​ball 16 to disengage from the space formed by the elastic arc plate 14. As the snap-fit ​​ball 16 disengages, the mounting plate 2 15 is also pulled out of the slot 2, causing the fixing clamp 4 to separate from the fixing base 1, thus removing the fixing clamp 4 that has experienced elastic fatigue. Subsequently, the operator takes out a new fixing clamp 4, and the bottom of the new fixing clamp 4 is also equipped with a second connecting piece 12 containing the mounting plate 2 15 and the snap-fit ​​ball 16. The mounting plate 15 is aligned with the slot 2. By applying a downward force to the fixing clamp 4, the mounting plate 15 is slowly inserted into the slot 2, so that the clamping ball 16 gradually approaches the elastic arc plate 14. When the clamping ball 16 contacts the elastic arc plate 14, the elastic arc plate 14 is squeezed and slightly opens to both sides to create space for the clamping ball 16 to enter. As the mounting plate 15 continues to be inserted into the slot 2, the clamping ball 16 completely enters the space formed by the elastic arc plate 14. The elastic arc plate 14 restores its deformation and tightly wraps the clamping ball 16, thus completing the installation of the new fixing clamp 4. The docking method between the first connector 11 and the second connector 12 may include, but is not limited to, a snap-fit ​​connection.

[0024] like Figure 1 , Figure 2 As shown, the smaller diameter end of the tube 5 is provided with an arc-shaped opening so that the guide vessel 8 can obtain a larger range of motion through the arc-shaped opening, avoiding folding or bending of the guide vessel 8 due to restricted movement; that is, it is curved in an arc shape to ensure that the inner wall is smooth and that blood flows smoothly.

[0025] like Figure 7 As shown, a certain inclined arc surface is provided at the connection between the middle section and the minimum section of the connector, so that the blood in the pump tube can smoothly enter the guide tube through the arc surface, and air bubbles can be avoided during the delivery process.

[0026] like Figure 4 , Figure 6 As shown, the upper end of the elastic arc plate 14 is provided with an arc surface to facilitate the insertion or removal of the ball 16 into or out of the elastic arc plate 14, so as to perform the insertion or removal operation more smoothly and reduce the jamming phenomenon between the ball 16 and the elastic arc plate 14.

[0027] The working principle of the hemodialysis tubing provided by this utility model is as follows: The clamping connector is clamped and fixed inside the tubing 5 on the fixing clamp 4, so that the connector 6 is in a state where it cannot move and is firmly fixed inside the tubing 5. This ensures that the vibration generated by the blood pump movement only acts on the pump tube 7 for blood delivery and will not cause displacement of the guide tube 8. This ensures that the movement of the blood pump will not affect the guide tube 8, improves the stability of blood delivery during dialysis, and when the fixing clamp 4 itself experiences elastic fatigue, the operator can apply an upward pulling force to the fixing clamp 4 to... The snap-fit ​​ball 16 exerts an outward compressive force on the elastic arc plate 14. When the tension is large enough, the elastic arc plate 14 will undergo elastic deformation and open to both sides on the upper surface of the mounting plate 13, allowing the snap-fit ​​ball 16 to detach from the space formed by the elastic arc plate 14. As the snap-fit ​​ball 16 detaches, the mounting plate 2 15 is also pulled out of the slot 2, causing the fixing clamp 4 to separate from the fixing base 1, thereby removing the fixing clamp 4 that has experienced elastic fatigue. This allows the device to replace the fixing clamp 4 with a new one when the fixing clamp 4 experiences elastic fatigue, thus ensuring the fixing effect of the fixing clamp 4 itself.

[0028] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A hemodialysis tubing, comprising a fixed base (1), characterized in that, The upper surface of the fixed base (1) is symmetrically and obliquely provided with slots (2). The slots (2) are arranged horizontally in a figure-eight pattern on the upper surface of the fixed base (1). Each slot (2) is equipped with a snap-fit ​​structure (3). Each snap-fit ​​structure (3) is equipped with a fixed tube clamp (4). Each fixed tube clamp (4) is provided with a tube sleeve (5). Each tube sleeve (5) is movably snapped with a connector (6). The diameter of the connector (6) is matched with that of the tube sleeve (5). The larger diameter end of each connector (6) is connected to a pump tube (7) so that the pump tube (7) is in a ring shape, so that the external blood pump can be fitted on the outer circumference of the pump tube (7). Each smaller diameter end of the connector (6) is equipped with a guide tube (8).

2. The hemodialysis tubing according to claim 1, characterized in that, The tube (5) has a hierarchical structure inside, which has 3 layers and the diameter of the 3 layers decreases sequentially. The connector (6) is a three-section structure and the diameter of the three sections decreases sequentially. The larger diameter end of the connector (6) is installed in the larger diameter layer of the hierarchical structure inside the tube (5) so that the hierarchical structure corresponds to the three-section structure.

3. A hemodialysis tubing according to claim 2, characterized in that, The inner wall of the tube (5) is provided with a positioning groove (9), and the outer surface of the connector (6) is provided with a positioning post (10). The positioning post (10) can be inserted into the corresponding positioning groove (9).

4. A hemodialysis tubing according to claim 1, characterized in that, The snap-fit ​​structure (3) includes a first connector (11) and a second connector (12). The first connector (11) is installed at the bottom of the inner cavity of the slot (2), and the second connector (12) is installed at the bottom of the fixed pipe clamp (4).

5. A hemodialysis tubing according to claim 4, characterized in that, The first connector (11) includes a mounting plate (13), which is installed at the bottom of the inner cavity of the slot (2). The upper surface of the mounting plate (13) is symmetrically mounted with elastic arc plates (14) relative to the central axis. There are at least two elastic arc plates (14).

6. A hemodialysis tubing according to claim 5, characterized in that, The second connector (12) includes a second mounting plate (15), which is installed at the bottom of the fixed pipe clamp (4). The second mounting plate (15) can be snapped into the slot (2). A snap-fit ​​ball (16) is installed on the lower surface of the second mounting plate (15). When the second mounting plate (15) is fully snapped into the slot (2), the snap-fit ​​ball (16) can be snapped into the space formed by the elastic arc sheet (14).

7. A hemodialysis tubing according to claim 2, characterized in that, The tube (5) has an arc-shaped opening at the smaller diameter end, which is connected to the smallest diameter end of the hierarchical structure.

8. A hemodialysis tubing according to claim 2, characterized in that, The connection between the middle section and the smallest section of the connector (6) is provided with a certain inclined arc surface.

9. A hemodialysis tubing according to claim 6, characterized in that, The upper end of each elastic arc sheet (14) is provided with an arc surface.

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