Double-vein pipeline for hemodialysis

Abstract

The utility model discloses a double vein pipeline for hemodialysis, which belongs to the technical field of hemodialysis, and comprises an auxiliary pipe and a protective sleeve, the left side surface of the auxiliary pipe is fixedly connected with an external pipe, and the surface of the external pipe is fixedly connected with a working pipe; the protective sleeve is movably arranged on the surface of the working pipe; the auxiliary block is fixedly connected to the surface of the working pipe, and a through hole is formed in the surface of the auxiliary block. According to the double-vein pipeline for hemodialysis, when a working pipe does not need to be used, the working pipe can be covered with a protective sleeve, during specific operation, a connecting rod is inserted into a through hole, at the moment, a limiting block can move in the direction of extruding a first spring, and when the limiting block crosses the through hole, the limiting block pops up under the action of the first spring, so that the working pipe is not required to be used; and at the moment, the limiting block enables the protective sleeve not to fall off from the surface of the working pipe, and the protective sleeve covers the tail end of the working pipe, so that the working pipe is not damaged and polluted.

Description

Technical Field

[0001] This utility model relates to the field of hemodialysis technology, specifically to a dual-venous tubing for hemodialysis. Background Technology

[0002] Hemodialysis is used in the medical field to purify the blood of patients. During hemodialysis, a specific device is used to remove excess water, toxins and excess electrolytes from the patient's body. A double venous line is required during hemodialysis.

[0003] The dual-venous catheter system provides two venous access points, allowing for the rapid activation of the other venous access when one venous chamber becomes blocked during dialysis. This ensures the normal operation of hemodialysis and improves stability and safety.

[0004] During use, if the other tubing is not working and is left open, dust may enter the tubing, which may affect the subsequent dialysis process and cause unnecessary trouble for patients and medical staff.

[0005] To overcome the above-mentioned defects, prior art 1 (Chinese patent application number CN201922006547.3, application date 2019-11-20) provides a deep vein catheter fixation dressing that is convenient for fixation, protects the catheter, and facilitates its removal for use, bringing convenience to medical staff. Moreover, through the design of protective pads and covering pads, it ensures that the catheter can be protected during use and also provides a good dustproof effect, solving the problem that general deep vein catheter fixation dressings cannot protect the catheter inside during use.

[0006] When the tubing is needed, it needs to be put into operation quickly. However, the device in the above application does not have a structure for quickly removing the protective device during use, resulting in low work efficiency and affecting the dialysis process.

[0007] To address the aforementioned issues, there is an urgent need for innovative designs based on the existing dual-venous tubing system for hemodialysis. Utility Model Content

[0008] The purpose of this invention is to provide a dual-venous tubing for hemodialysis, in order to solve the problem mentioned in the background art that the lack of a structure for quick removal of the protective device during use results in low work efficiency and affects the dialysis process.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a dual venous tubing for hemodialysis, comprising an auxiliary tube and a protective sleeve, wherein an outer tube is fixedly connected to the left side surface of the auxiliary tube, and a working tube is fixedly connected to the surface of the outer tube.

[0010] The protective sleeve is movably disposed on the surface of the working tube;

[0011] A dual-venous catheter for hemodialysis also includes:

[0012] An auxiliary block is fixedly connected to the surface of the working tube, and a through hole is provided on the surface of the auxiliary block;

[0013] The upper connecting block is fixedly connected to the upper surface of the protective sleeve, and a connecting rod is fixedly connected to the surface of the upper connecting block.

[0014] Preferably, a limiting block is movably provided inside the connecting rod, and the limiting block extends through the interior of the connecting rod, and the limiting blocks are symmetrically distributed about the center of the connecting rod.

[0015] Preferably, the surface of the limiting block is inclined, and a slider is fixedly connected to the surface of the limiting block. The sliders are symmetrically distributed about the center of the limiting block, and the interior of the connecting rod has a groove corresponding to the slider.

[0016] Preferably, a first spring that provides elastic reset is fixedly connected to the surface of the slider, and the other side of the first spring is fixedly connected to the inner wall of the connecting rod.

[0017] Preferably, the surface of the connecting rod is provided with a moving groove, and the surface of the limiting block is fixedly connected with a lever, which is slidably disposed inside the moving groove.

[0018] Preferably, a push rod is slidably disposed inside the auxiliary block, and the surface of the push rod is in contact with the inner wall of the auxiliary block.

[0019] Preferably, a second spring that provides elastic reset is fixedly connected to the surface of the push rod, and the other side of the second spring is fixedly connected to the inner wall of the auxiliary block.

[0020] Compared with the prior art, the beneficial effects of this utility model are: the dual venous tubing for hemodialysis adopts a novel structural design, the specific details of which are as follows:

[0021] (1) When the working tube is not needed, the protective sleeve can be placed on the working tube of the dual venous tubing of hemodialysis. In specific operation, the connecting rod is inserted into the through hole. At this time, the limiting block will move in the direction of squeezing the first spring. When the limiting block passes through the through hole, the limiting block pops out under the action of the first spring. At this time, the limiting block prevents the protective sleeve from falling off the surface of the working tube. At this time, the protective sleeve covers the end of the working tube, so that the working tube will not be damaged or contaminated.

[0022] Furthermore, during the docking process of the limit blocks, the limit blocks will drive the slider to move inside the slide groove. At this time, the slider and the slide groove limit the movement distance of the limit blocks, ensuring the stability of the limit blocks. The limit blocks are symmetrically distributed on both sides of the connecting rod, which optimizes the limiting effect of the limit blocks and improves stability.

[0023] (2) When the working tube of the dual vein line for hemodialysis is needed, the protective sleeve needs to be removed. At this time, the push block can be pushed so that the push block moves the limiting block in the direction of squeezing the first spring, and finally the limiting block moves into the inside of the connecting rod. At this time, the connecting rod can be pulled out from the inside of the through hole. The disassembly process is also quick and convenient.

[0024] (3) In the process of docking the protective sleeve, the push rod on the surface of the auxiliary block of the dual vein tubing of the hemodialysis will be pushed by the surface of the upper connecting block. At this time, the push rod will move in the direction of squeezing the second spring. Thus, after the docking of the protective sleeve is completed, the second spring is always in a squeezed state.

[0025] Furthermore, when it is necessary to remove the protective cover and push the lever, the second spring will push the push rod. At this time, the push rod will push the upper connecting block away from the auxiliary block, thus preventing the protective cover from being difficult to remove and improving work efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the connection structure between the auxiliary pipe and the outer pipe of this utility model;

[0027] Figure 2 This is a schematic diagram of the connection structure between the working tube and the protective sleeve of this utility model;

[0028] Figure 3 This is a schematic diagram of the connection structure between the auxiliary block and the push rod of this utility model;

[0029] Figure 4 This is a schematic diagram of the connection structure between the slider and the first spring of this utility model;

[0030] Figure 5 This is a schematic diagram of the connection structure between the upper connecting block and the connecting rod of this utility model;

[0031] Figure 6 This is a schematic diagram of the connection structure between the limiting block and the toggle block of this utility model.

[0032] In the diagram: 1. Auxiliary pipe; 2. Outer pipe; 3. Working pipe; 4. Protective sleeve; 5. Auxiliary block; 6. Upper connecting block; 7. Connecting rod; 8. Toggle block; 9. Limiting block; 10. Slider; 11. Slide groove; 12. First spring; 13. Push rod; 14. Second spring; 15. Moving groove; 16. Through hole. Detailed Implementation

[0033] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Example 1: The protective sleeve 4 can protect the unused outer pipe 2 and working pipe 3, such as... Figures 1-4 As shown:

[0035] It includes an auxiliary pipe 1 and a protective sleeve 4. An outer pipe 2 is fixedly connected to the left side surface of the auxiliary pipe 1, and a working pipe 3 is fixedly connected to the surface of the outer pipe 2. The protective sleeve 4 is movably disposed on the surface of the working pipe 3.

[0036] A dual-venous catheter for hemodialysis also includes:

[0037] Auxiliary block 5 is fixedly connected to the surface of working tube 3, and through hole 16 is opened on the surface of auxiliary block 5. Upper connecting block 6 is fixedly connected to the upper surface of protective sleeve 4, and connecting rod 7 is fixedly connected to the surface of upper connecting block 6. Limiting block 9 is movably arranged inside the connecting rod 7, and the limiting block 9 passes through the inside of the connecting rod 7, and the limiting block 9 is symmetrically distributed about the center of the connecting rod 7.

[0038] The surface of the limiting block 9 is inclined, and a slider 10 is fixedly connected to the surface of the limiting block 9. The slider 10 is symmetrically distributed about the center of the limiting block 9. The inside of the connecting rod 7 is provided with a groove 11 that corresponds to the slider 10. A first spring 12 that plays an elastic reset role is fixedly connected to the surface of the slider 10, and the other side of the first spring 12 is fixedly connected to the inner wall of the connecting rod 7.

[0039] When the working tube 3 is not needed, the protective sleeve 4 can be placed over it. Specifically, the connecting rod 7 is inserted into the through hole 16. At this time, the limiting block 9 is pushed by the inner wall of the auxiliary block 5, causing it to move further into the connecting rod 7. The limiting block 9 then drives the slider 10 to slide inside the groove 11, compressing the first spring 12. When the limiting block 9 passes the through hole 16, it pops out under the action of the first spring 12. This prevents the protective sleeve 4 from falling off the surface of the working tube 3, thus covering the end of the working tube 3 and preventing damage or contamination. The slider 10 and the groove 11 limit the movement distance of the limiting block 9, ensuring its stability. Furthermore, the symmetrical distribution of the limiting blocks 9 on both sides of the connecting rod 7 optimizes their limiting effect and improves stability.

[0040] Example 2: Unlike Example 1, the protective cover 4 can be quickly removed using the adjustable lever 8. Figure 6 As shown:

[0041] The surface of the connecting rod 7 is provided with a moving groove 15, and the surface of the limiting block 9 is fixedly connected with a lever 8, which is slidably disposed inside the moving groove 15.

[0042] When the working tube 3 is needed, the protective sleeve 4 needs to be removed. At this time, the push block 8 can be pushed so that the push block 8 moves the limit block 9 in the direction of squeezing the first spring 12. Finally, the limit block 9 moves into the inside of the connecting rod 7. At this time, the connecting rod 7 can be pulled out from the inside of the through hole 16. Then the outer tube 2 and the working tube 3 can be used. The disassembly process is also quick and convenient.

[0043] Example 3: Unlike Example 2, the push rod 13 assists in disassembling the protective sleeve 4, as shown below. Figures 5-6 As shown:

[0044] A push rod 13 is slidably disposed inside the auxiliary block 5, and the surface of the push rod 13 is in contact with the inner wall of the auxiliary block 5. A second spring 14, which plays an elastic reset role, is fixedly connected to the surface of the push rod 13, and the other side of the second spring 14 is fixedly connected to the inner wall of the auxiliary block 5.

[0045] During the docking process of the protective sleeve 4, the push rod 13 on the surface of the auxiliary block 5 will be pushed by the surface of the upper connecting block 6. At this time, the push rod 13 will move in the direction of squeezing the second spring 14. Thus, after the docking of the protective sleeve 4 is completed, the second spring 14 is always in a squeezed state. When it is necessary to remove the protective sleeve 4 and push the lever 8, the second spring 14 will push the push rod 13, causing the push rod 13 to move outward from the auxiliary block 5. At this time, the push rod 13 plays the role of pushing the upper connecting block 6 away from the auxiliary block 5, thus preventing the protective sleeve 4 from being difficult to remove and improving work efficiency.

[0046] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dual venous tubing for hemodialysis, comprising an auxiliary tube (1) and a protective sleeve (4), wherein an external tube (2) is fixedly connected to the left side surface of the auxiliary tube (1), and a working tube (3) is fixedly connected to the surface of the external tube (2). The protective sleeve (4) is movably disposed on the surface of the working tube (3); Its features are, Also includes: An auxiliary block (5) is fixedly connected to the surface of the working tube (3), and a through hole (16) is provided on the surface of the auxiliary block (5). Upper connecting block (6) is fixedly connected to the upper surface of the protective sleeve (4), and a connecting rod (7) is fixedly connected to the surface of the upper connecting block (6).

2. The dual-venous tubing for hemodialysis according to claim 1, characterized in that: The connecting rod (7) is provided with a limiting block (9) inside, and the limiting block (9) extends through the interior of the connecting rod (7), and the limiting block (9) is symmetrically distributed about the center of the connecting rod (7).

3. The dual-venous tubing for hemodialysis according to claim 2, characterized in that: The surface of the limiting block (9) is inclined, and a slider (10) is fixedly connected to the surface of the limiting block (9). The slider (10) is symmetrically distributed about the center of the limiting block (9). The connecting rod (7) has a groove (11) inside that corresponds to the slider (10).

4. The dual venous tubing for hemodialysis according to claim 3, characterized in that: The surface of the slider (10) is fixedly connected to a first spring (12) that plays an elastic reset role, and the other side of the first spring (12) is fixedly connected to the inner wall of the connecting rod (7).

5. A dual-venous catheter for hemodialysis according to claim 2, characterized in that: The surface of the connecting rod (7) is provided with a moving groove (15), and the surface of the limiting block (9) is fixedly connected with a lever (8), and the lever (8) is slidably disposed inside the moving groove (15).

6. The dual-venous tubing for hemodialysis according to claim 1, characterized in that: The auxiliary block (5) has a push rod (13) slidably disposed inside, and the surface of the push rod (13) is in contact with the inner wall of the auxiliary block (5).

7. A dual-venous catheter for hemodialysis according to claim 6, characterized in that: The surface of the push rod (13) is fixedly connected to a second spring (14) that plays an elastic reset role, and the other side of the second spring (14) is fixedly connected to the inner wall of the auxiliary block (5).

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