Novel dialysis tube for hemodialysis equipment

Abstract

The invention discloses a novel dialysis tube for hemodialysis equipment, and relates to the field of medical instruments, the novel dialysis tube comprises a catheter body, the catheter body comprises an artery tube and a vein tube, the novel dialysis tube further comprises a fixing assembly and two adjusting mechanisms, each adjusting mechanism comprises a limiting part, a sliding frame, a limiting frame and a limiting assembly, the limiting part is used for fixing the artery tube / vein tube, and the sliding frame is used for sliding the artery tube / vein tube; the limiting piece is arranged at the top of the sliding frame, the limiting assembly is installed on the sliding frame, the outer side wall of the sliding frame is in sliding connection with the limiting frame, the limiting frame is installed on the fixing assembly, the bottom end of the limiting piece is connected with the limiting assembly, and the limiting assembly comprises two limiting ropes; through cooperation of the limiting rope, the coil spring and the winding disc, when the pipeline is pulled, the limiting rope is pulled out and stretches the coil spring, elastic potential energy is released to buffer external force, pipeline breaking or connection falling caused by rigid fixing is avoided, after pulling force disappears, the coil spring is automatically rewound and reset, the pipeline is restored to the original position, and flexible fixing and self-adaptive protection are achieved.

Description

Technical Field

[0001] The present invention relates to the technology of medical devices, and particularly to a novel dialysis tube for hemodialysis equipment. Background Art

[0002] During hemodialysis, the stable fixation and anti-pulling protection of the dialysis tube are the keys to ensuring treatment safety. In the prior art, the dialysis tube is often fixed to the patient's limb or the bedside through a rigid clamping structure. Although it can prevent the pipeline from bending, when the patient's limb moves, the rigid fixation is likely to cause the pipeline to break or the connection to disconnect after being pulled, posing a safety hazard.

[0003] For example, in the Chinese invention patent with the publication number CN117339087A, a renal dialysis tube is disclosed. The renal dialysis tube includes an adjustment mechanism. The adjustment mechanism includes a fixed retaining frame. The top of the inner cavity of the fixed retaining frame is movably connected with an adjustment screw rod. The front side of the surface of the adjustment screw rod is threadedly connected with an adjustment nut sleeve. The surface of the adjustment nut sleeve is fixedly connected with a moving sleeve. A protection mechanism is arranged at the bottom of the moving sleeve. The protection mechanism includes a bending sleeve. A groove is formed in the inner cavity of the bending sleeve. The dialysis tube body is installed in the groove. A fixed retaining seat is installed on the right side of the bending sleeve. The surface of the fixed retaining seat is movably connected with the inside of the groove, and the left side of the fixed retaining seat contacts the surface of the dialysis tube body. In this application, by pulling the pulling ring to move the fixed retaining seat to the right, the second connecting plate is driven to move by the movement of the fixed retaining seat. The return spring is stretched and deformed by the movement of the second connecting plate. Then the fixed retaining seat moves away from the bending sleeve, and the dialysis tube body is inserted into the groove. After releasing the pulling ring, the fixed retaining seat closely contacts the dialysis tube body under the restoration of the deformation of the return spring, thereby being able to protect the dialysis tube body and solving the problem that when the existing dialysis tube is used, the dialysis tube is placed beside the bed, and it is easy to bend when placed beside the bed, which will affect the dialysis effect.

[0004] However, in the actual use process, since it protects the dialysis tube body by closely contacting the dialysis tube body with the fixed retaining seat, the fixation of the dialysis tube body is a rigid fixation. When the patient's limb moves, it is easy to pull the dialysis tube body. Under the rigid fixation, situations such as the dialysis tube body being broken or damaged and the connection of the dialysis tube body being disconnected are likely to occur.

[0005] In the Chinese utility model patent with the publication number CN217794072U, a dialysis pipeline and a hemodialysis system with a fixing clip for carrying a hemodialysis pipeline are disclosed. The dialysis pipeline and the hemodialysis system with the fixing clip for carrying a hemodialysis pipeline use a first sleeve, a second sleeve, and the fixing clips provided on both of them to fix the arterial pipeline and the venous pipeline to the patient's clothes, which can effectively fix the arterial pipeline and the venous pipeline without affecting blood flow, and do not affect the patient's activities such as turning over and getting up in bed, and can avoid the risk of blood leakage of the patient caused by the disconnection of the dialysis pipeline during hemodialysis; this application can only play a certain degree of limiting role for both the arterial pipeline and the venous pipeline. In case of an accident, it is easy to pull the dialysis tube, resulting in the bending and blocking of the arterial pipeline and the venous pipeline. Summary of the Invention

[0006] The purpose of the present invention is to provide a new type of dialysis tube for hemodialysis equipment to solve the problem that the dialysis tube in the prior art is prone to pipeline breakage, connection disconnection or bending deformation under external force pulling due to insufficient rigid fixation or limitation, threatening the safety of treatment.

[0007] To achieve the above purpose, the present invention provides the following technical solution: A new type of dialysis tube for hemodialysis equipment, including a catheter main body, the catheter main body includes an arterial tube and a venous tube, and further includes: a fixing component and two groups of adjusting mechanisms;

[0008] The adjusting mechanism includes a limiting member, a sliding frame, a limiting frame and a limiting component. The limiting member is used to fix the arterial tube / venous tube. The limiting member is arranged on the top of the sliding frame. The limiting component is installed on the sliding frame. The outer side wall of the sliding frame is slidably connected with the limiting frame, and the limiting frame is installed on the fixing component;

[0009] The bottom end of the limiting member is connected to the limiting component. The limiting component includes two limiting ropes. One end of the limiting rope is connected to the limiting member, and the other end of the limiting rope is connected with a winding disc. The limiting rope is partially wound outside the winding disc connected to it. The winding disc is rotatably installed on the sliding frame through a rotating shaft. The bottom end of the winding disc is fixedly connected with a torsion spring, and the ends of the two torsion springs are respectively fixedly connected with the sliding frame;

[0010] The bottom end of the sliding frame is connected with a driving mechanism capable of driving the sliding frame to move along the height direction of the limiting frame.

[0011] Furthermore, two guiding plates are provided. The two guiding plates are respectively arranged on the sides away from each other of the two winding discs. Through holes for the limiting ropes on one side of them to pass through are opened on the two guiding plates. The bottom ends of the two guiding plates are respectively fixedly connected with the sliding frame.

[0012] Further, the bottom ends of the two rotating shafts both penetrate through the sliding frame and are fixedly connected with driving gears. A driven gear is arranged between the two driving gears, and both sides of the driven gear are meshed with the two driving gears respectively. A transmission shaft is fixedly sleeved inside the driven gear, and the top end of the transmission shaft is rotatably connected with the sliding frame.

[0013] Further, the driving mechanism includes a fixed sleeve and a spiral groove formed on the outer part of the transmission shaft. A push rod is fixedly installed on the inner side wall of the fixed sleeve. The bottom end of the fixed sleeve is fixedly connected with the limiting frame, and the end of the push rod is slidably connected with the inner wall of the spiral groove.

[0014] Further, the driving mechanism includes a threaded sleeve and a threaded groove formed on the outer part of the transmission shaft. The transmission shaft is threadedly connected with the inner wall of the threaded sleeve through the threaded groove on it, and the bottom end of the threaded sleeve is fixedly connected with the limiting frame.

[0015] Further, the winding directions of the two limiting ropes wound around the winding disc are opposite.

[0016] Further, the fixing assembly includes a fixing plate and a binding band. The two ends of the binding band are respectively fixedly connected with the fixing plate, and the bottom end of the limiting frame is fixedly connected with the fixing plate.

[0017] Further, the limiting member includes an integrally formed fixing part and two symmetrically arranged clamping parts. The bottom end of the fixing part is fixedly connected with the limiting rope. A gap for clamping the artery tube / vein tube is arranged between the clamping parts, and the clamping parts are made of an elastic material.

[0018] Compared with the prior art, a novel dialysis tube for a hemodialysis device provided by the present invention, through the cooperation of the limiting rope, the torsion spring and the winding disc, when the pipeline is pulled, the limiting rope is pulled out and the torsion spring is stretched, releasing the elastic potential energy to buffer the external force, avoiding the pipeline breakage or connection detachment caused by rigid fixation. After the pulling force disappears, the torsion spring automatically rewinds and resets to restore the original position of the pipeline, realizing flexible fixation and self-adaptive protection, and ensuring the safety and stability of the hemodialysis process;

[0019] By arranging the driving gear and the driven gear, the winding directions of the two limiting ropes are opposite. When one of the limiting ropes is pulled, through the transmission of the driving gear, the driven gear and the transmission shaft, the two winding discs rotate synchronously and unwind the two limiting ropes synchronously, avoiding the situation that the artery tube and / or the vein tube are bent and deformed too much due to pulling, resulting in pipeline blockage or breakage;

[0020] By arranging the driving mechanism, when the pipeline is pulled, the driving mechanism drives the sliding frame to rise relative to the limiting frame, adjusting the pipeline fixing height, further reducing the problem of excessive bending angle caused by pulling, adapting to the different body positions of patients, and protecting the integrity and functionality of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for use in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other accompanying drawings can also be obtained based on these drawings.

[0022] Figure 1 External three-dimensional structure schematic diagram provided by an embodiment of the present invention;

[0023] Figure 2 Top view structure schematic diagram provided by an embodiment of the present invention;

[0024] Figure 3 Partial cross-sectional structure schematic diagram provided by an embodiment of the present invention;

[0025] Figure 4 Provided by an embodiment of the present invention Figure 3 Enlarged schematic diagram at position A in;

[0026] Figure 5 Combined schematic diagram of the limit frame, fixed sleeve, transmission shaft, spiral groove and push rod provided by an embodiment of the present invention;

[0027] Figure 6 Combined schematic diagram of the limit frame, threaded sleeve and transmission shaft provided by an embodiment of the present invention;

[0028] Figure 7 Combined schematic diagram of the transmission shaft and the spiral groove provided by an embodiment of the present invention.

[0029] Explanation of reference numerals:

[0030] 110, arterial tube; 120, venous tube; 200, fixing component; 210, fixing plate; 220, binding strap; 300, adjusting mechanism; 310, limiting member; 311, fixing portion; 312, clamping portion; 320, sliding frame; 330, limit frame; 340, limiting assembly; 341, limiting rope; 342, winding disc; 343, torsion spring; 344, rotating shaft; 400, driving mechanism; 410, fixed sleeve; 420, spiral groove; 430, push rod; 440, threaded sleeve; 500, guiding plate; 600, driving gear; 700, driven gear; 800, transmission shaft. Detailed implementation manners

[0031] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will further introduce the present invention in detail in conjunction with the accompanying drawings.

[0032] Please refer to Figures 1 to 7, A new dialysis tube for hemodialysis equipment, comprising a catheter body, the catheter body includes an arterial tube 110 and a venous tube 120, and further comprising: a fixing assembly 200 and two sets of adjusting mechanisms 300;

[0033] The adjusting mechanism 300 includes a limiting member 310, a sliding frame 320, a limiting frame 330 and a limiting assembly 340. The limiting member 310 is used to fix the arterial tube 110 / venous tube 120. The limiting member 310 is arranged at the top of the sliding frame 320. The limiting assembly 340 is installed on the sliding frame 320. The outer side wall of the sliding frame 320 is slidably connected to the limiting frame 330. The limiting frame 330 is installed on the fixing assembly 200;

[0034] The bottom end of the limiting member 310 is connected to the limiting assembly 340. The limiting assembly 340 includes two limiting ropes 341. One end of the limiting rope 341 is connected to the limiting member 310. The other end of the limiting rope 341 is connected with a winding disc 342. The limiting rope 341 is partially wound around the outside of the winding disc 342 connected thereto. The winding disc 342 is rotatably installed on the sliding frame 320 through a rotating shaft 344. The bottom end of the winding disc 342 is fixedly connected with a torsion spring 343. The ends of the two torsion springs 343 are respectively fixedly connected to the sliding frame 320;

[0035] The bottom end of the sliding frame 320 is connected with a driving mechanism 400 capable of driving the sliding frame 320 to move along the height direction of the limiting frame 330.

[0036] Existing dialysis tubes are often fixed to the patient's limb or bedside through a rigid clamping structure. Due to the lack of elastic buffer in the rigid fixing method, when the patient's limb accidentally moves or is pulled by an external force, the dialysis tube will directly bear a large tensile force. This tensile force may instantaneously exceed the bearing limit of the pipeline, resulting in the pipeline breaking. For example, when the patient gets up, if they accidentally pull the dialysis tube, the rigid clamping structure cannot effectively buffer this tensile force, and it is very easy for the pipeline to break at the connection or weak part. Once the pipeline breaks, the dialysate will leak, which not only affects the normal progress of dialysis treatment, but may also lead to fluid imbalance in the patient's body and even cause serious complications such as infection, posing a safety hazard;

[0037] To this end, in the process of hemodialysis, the arterial tube 110 and the venous tube 120 respectively undertake the functions of drawing out the patient's blood and transfusing the purified blood back. The arterial tube 110 and the venous tube 120 are respectively fixed by the limit members 310 in the two adjusting mechanisms 300, and then the overall components are fixed to the patient's limb through the fixing assembly 200. Once the arterial tube 110 and / or the venous tube 120 are pulled due to the movement of the patient's limb or other situations, the arterial tube 110 and / or the venous tube 120 pull the limit rope 341 in the adjusting mechanism 300 through the limit member 310. The limit rope 341 is pulled out, the winding disc 342 rotates and stretches the coil spring 343. The coil spring 343 will be stretched when the winding disc 342 rotates, storing elastic potential energy. When the external force disappears, the elastic potential energy of the coil spring 343 can be released, causing the winding disc 342 to rotate in the reverse direction, rewinding the limit rope 341, realizing the reset of the limit member 310, and making preparations for the possible pulling situation next time. When the arterial tube 110 and / or the venous tube 120 are pulled, the arterial tube 110 and / or the venous tube 120 have a certain movable space, avoiding breakage or disconnection of the connection caused by rigid fixation.

[0038] In an embodiment of the present invention, two guide plates 500 are further provided. The two guide plates 500 are respectively arranged on the sides of the two winding discs 342 away from each other. Through holes for the limit rope 341 on one side of each of the two guide plates 500 to pass through are provided on the two guide plates 500. The bottoms of the two guide plates 500 are respectively fixedly connected to the sliding frame 320.

[0039] Specifically, the movement of the limit rope 341 is guided by the guide plate 500 and the through hole thereon, guiding the path of the limit rope 341, preventing the limit rope 341 from winding or deviating, ensuring that the limit rope 341 can be pulled out and wound according to the predetermined path, ensuring the normal operation of the adjusting mechanism 300, and improving the stability and reliability of the entire dialysis tube.

[0040] In an embodiment of the present invention, the bottoms of the two rotating shafts 344 both penetrate through the sliding frame 320 and are fixedly connected with driving gears 600. A driven gear 700 is arranged between the two driving gears 600, and both sides of the driven gear 700 are respectively meshed with the two driving gears 600. A transmission shaft 800 is fixedly sleeved inside the driven gear 700, and the top end of the transmission shaft 800 is rotatably connected to the sliding frame 320; the winding directions of the two limit ropes 341 wound on the winding disc 342 are opposite.

[0041] Specifically, two limiting ropes 341 are respectively connected to the bottoms of both ends of the limiting member 310. When one of the limiting ropes 341 is pulled, the winding disc 342 connected thereto is driven to rotate. The winding disc 342 is fixedly connected to the rotating shaft 344. The winding disc 342 drives the rotating shaft 344 to rotate, and the rotating shaft 344 drives the driving gear 600 mounted thereon to rotate. Driven by the driven gear 700, the two driving gears 600 rotate synchronously, that is, the two winding discs 342 rotate synchronously. And because the winding directions of the two limiting ropes 341 are opposite, at this time, the two winding discs 342 unwind the two limiting ropes 341 synchronously, which can better cope with the pulling situation of the pipeline, so as to avoid the arterial tube 110 and / or the venous tube 120 from being bent and deformed too much due to excessive unilateral force, protecting the integrity and functionality of the pipeline.

[0042] Please refer to Figure 3 、 Figure 5 and Figure 7 In an embodiment of the present invention, the driving mechanism 400 includes a fixed sleeve 410 and a spiral groove 420 opened on the outside of the transmission shaft 800. A push rod 430 is fixedly installed on the inner side wall of the fixed sleeve 410. The bottom end of the fixed sleeve 410 is fixedly connected to the limiting frame 330. The end of the push rod 430 is slidably connected to the inner wall of the spiral groove 420;

[0043] Specifically, when the driven gear 700 rotates, it drives the transmission shaft 800 to rotate. Since the fixed sleeve 410 is fixed to the limiting frame 330, the push rod 430 in the fixed sleeve 410 is embedded in the spiral groove 420 of the transmission shaft 800. When the transmission shaft 800 rotates, it drives the sliding frame 320 to move upward, and the sliding frame 320 drives the limiting member 310 on its top to move upward, further avoiding the arterial tube 110 and / or the venous tube 120 from being bent and deformed too much due to pulling.

[0044] Please refer to Figure 3 and Figure 6 In an embodiment of the present invention, the driving mechanism 400 includes a threaded sleeve 440 and a threaded groove opened on the outside of the transmission shaft 800. The transmission shaft 800 is threadedly connected to the inner wall of the threaded sleeve 440 through the threaded groove on it, and the bottom end of the threaded sleeve 440 is fixedly connected to the limiting frame 330;

[0045] Specifically, the transmission shaft 800 is engaged with the threaded sleeve 440 through the threaded groove. When rotating, it pushes the sliding frame 320 to move upward. Similarly, the sliding frame 320 drives the limiting member 310 on its top to move upward, further adjusting the position of the limiting member 310, so that the pipeline has a larger activity space, and further avoiding the arterial tube 110 and / or the venous tube 120 from being bent and deformed too much due to pulling.

[0046] In one embodiment of the present invention, the fixing component 200 includes a fixing plate 210 and a binding strap 220. The two ends of the binding strap 220 are fixedly connected to the fixing plate 210 respectively, and the bottom end of the limiting frame 330 is fixedly connected to the fixing plate 210. The binding strap 220 can be an elastic band;

[0047] Specifically, the fixing plate 210 serves as a rigid base to ensure the stable connection between the limiting frame 330 and the adjusting mechanism 300; the elastic binding strap 220 adapts to different patient body types through adjustable tightness, which not only ensures the stability of the device but also avoids pressing the skin too tightly, reducing the risk of component displacement.

[0048] In one embodiment of the present invention, the limiting member 310 includes an integrally formed fixing portion 311 and two symmetrically arranged clamping portions 312. The bottom end of the fixing portion 311 is fixedly connected to the limiting rope 341. There is a gap for clamping the artery tube 110 / vein tube 120 between the clamping portions 312, and the material of the clamping portions 312 is an elastic material;

[0049] Specifically, the clamping portions 312 made of an elastic material (such as silicone or TPU) clamp the pipeline. The elastic material has good flexibility and elasticity, which can provide flexible fixation, allow minor deformations of the artery tube 110 / vein tube 120, disperse local stress, and reduce the risk of pressure injury or pipeline wear. For example, when the patient's limb moves, the pipeline will be subjected to certain tensile and compressive forces. The elastic clamping portions 312 can buffer these forces through their own elastic deformation, protect the integrity and safety of the pipeline, and extend the service life of the pipeline.

[0050] In the description of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. The meaning of "a plurality" is two or more unless otherwise specifically defined.

[0051] In the present invention, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0053] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not have to be directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0054] In the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved, and other structures can refer to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0055] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A novel dialysis tube for a hemodialysis device, comprising a catheter body, the catheter body including an arterial tube (110) and a venous tube (120), characterized in that, It further includes: a fixing component (200) and two sets of adjusting mechanisms (300); The adjusting mechanism (300) includes a limiting member (310), a sliding frame (320), a limiting frame (330) and a limiting component (340). The limiting member (310) is used for fixing the artery tube (110) / vein tube (120). The limiting member (310) is arranged on the top of the sliding frame (320). The limiting component (340) is installed on the sliding frame (320). The outer side wall of the sliding frame (320) is slidably connected with the limiting frame (330), and the limiting frame (330) is installed on the fixing component (200); The bottom end of the limiting member (310) is connected to the limiting component (340). The limiting component (340) includes two limiting ropes (341). One end of the limiting rope (341) is connected to the limiting member (310), and the other end of the limiting rope (341) is connected with a winding disc (342). The limiting rope (341) is partially wound around the outside of the winding disc (342) connected thereto. The winding disc (342) is rotatably installed on the sliding frame (320) through a rotating shaft (344). A winding spring (343) is fixedly connected to the bottom end of the winding disc (342), and the ends of the two winding springs (343) are respectively fixedly connected to the sliding frame (320); The bottom end of the sliding frame (320) is connected with a driving mechanism (400) capable of driving the sliding frame (320) to move along the height direction of the limiting frame (330).

2. The novel dialysis tube for a hemodialysis device according to claim 1, characterized in that, Two guiding plates (500) are further provided. The two guiding plates (500) are respectively arranged on the sides away from each other of the two winding discs (342). Through holes for the limiting ropes (341) on one side thereof to pass through are formed on the two guiding plates (500), and the bottom ends of the two guiding plates (500) are respectively fixedly connected to the sliding frame (320).

3. The novel dialysis tube for a hemodialysis device according to claim 1, wherein, The bottom ends of the two rotating shafts (344) both penetrate through the sliding frame (320) and are fixedly connected with driving gears (600). A driven gear (700) is arranged between the two driving gears (600), and the two sides of the driven gear (700) are respectively meshed with the two driving gears (600). A transmission shaft (800) is fixedly sleeved inside the driven gear (700), and the top end of the transmission shaft (800) is rotatably connected to the sliding frame (320).

4. A novel dialysis tube for a hemodialysis device according to claim 3, characterized in that, The driving mechanism (400) includes a fixed sleeve (410) and a spiral groove (420) formed on the outside of the transmission shaft (800). A push rod (430) is fixedly installed on the inner side wall of the fixed sleeve (410). The bottom end of the fixed sleeve (410) is fixedly connected to the limiting frame (330), and the end of the push rod (430) is slidably connected to the inner wall of the spiral groove (420).

5. The novel dialysis tube for a hemodialysis device according to claim 3, characterized in that, The driving mechanism (400) includes a threaded sleeve (440) and a threaded groove formed on the outside of the transmission shaft (800). The transmission shaft (800) is in threaded connection with the inner wall of the threaded sleeve (440) through the threaded groove on it, and the bottom end of the threaded sleeve (440) is fixedly connected to the limiting frame (330).

6. A novel dialysis tube for a hemodialysis device according to claim 1, characterized in that, The winding directions of the two limiting ropes (341) wound around the winding disc (342) are opposite.

7. A novel dialysis tube for a hemodialysis device according to claim 1, characterized in that, The fixing component (200) includes a fixing plate (210) and a binding strap (220). Both ends of the binding strap (220) are fixedly connected to the fixing plate (210), and the bottom end of the limiting frame (330) is fixedly connected to the fixing plate (210).

8. A novel dialysis tube for a hemodialysis device according to claim 1, characterized in that, The limiting member (310) includes an integrally formed fixing portion (311) and two symmetrically arranged clamping portions (312). The bottom end of the fixing portion (311) is fixedly connected to the limiting rope (341). A gap for clamping the artery tube (110) / vein tube (120) is provided between the clamping portions (312), and the material of the clamping portions (312) is an elastic material.

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