Rotary joint assembly for dialysis pipeline

Abstract

The utility model discloses a rotary joint assembly for dialysis pipeline relates to medical equipment technical field, including rotary joint and locking ring, the locking ring is coaxially sleeved on the rotary joint, the inner wall of locking ring is provided with first screw thread and second screw thread, the rotary joint is provided with the anti-back part, and the locking ring is provided with the first screw thread and the second screw thread. The first thread is matched with the thread on the connecting joint, and the second thread is matched with the anti-retreating part. According to the rotary joint, the second thread and the anti-retreating part are arranged in a matched mode, the locking capacity of the locking ring is improved, meanwhile, the situation that the locking force is reduced due to the fact that the rotary joint is stressed to move forwards can be prevented, and therefore the locking ring can be prevented from being loosened from the rotary joint, and the stability of connection between the corresponding connecting joint and the rotary joint can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a rotary joint assembly for a dialysis pipeline. Background Art

[0002] A hemodialysis device primarily consists of a dialysis machine, dialyzers, dialysis tubing, dialysate, and a water treatment system. The dialysis machine allows blood and dialysate to flow smoothly through the dialyzer, achieving the purpose of treatment. The dialyzer is a pipe and container for solute exchange between blood and dialysate, replacing kidney function and a key component of hemodialysis. The dialysis tubing, used in conjunction with the dialysis machine, forms a disposable medical device for extracorporeal circulation during dialysis treatment. Dialysate is a solution containing a variety of ionic and non-ionic substances. Its basic components are four cations: sodium, potassium, calcium, and magnesium, and two anions: chloride and base. Some dialysate also contains glucose. Dialysate removes metabolic waste and maintains water, electrolyte, and acid-base balance. The water treatment system removes dissolved salts, organic matter, silica colloids, macromolecules, and particulate matter not removed by pretreatment, purifying the water to meet the requirements for dialysis.

[0003] To facilitate connections between components, dialysis tubing currently on the market utilizes a large number of rotary joint assemblies. These assemblies consist of two components: a rotary joint and a locking ring. Since these two components (the rotary joint and the locking ring) can move relative to each other, after the locking ring is connected and locked to the corresponding connecting joint, the long-term extrusion force between the locking ring and the rotary joint contact surface will shorten the distance between the rotary joint and the corresponding connecting joint, thereby reducing the locking force of the locking ring thread and making it easier for the locking ring to loosen from the rotary joint. Utility Model Content

[0004] The purpose of the utility model is to provide a rotary joint assembly for a dialysis pipeline, which can prevent the rotary joint assembly from loosening by arranging a thread between a locking ring and the rotary joint.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: a rotary joint assembly for a dialysis pipeline, comprising a rotary joint and a locking ring, the locking ring being coaxially sleeved on the rotary joint, a first thread and a second thread being provided on the inner wall of the locking ring, an anti-retraction portion being provided on the rotary joint and cooperating with the second thread, and the first thread being cooperating with the thread on the connecting joint.

[0006] The technical principle of the present invention is as follows: by arranging a second thread on the locking ring and an anti-retraction portion on the rotary joint, when the first thread on the locking ring is locked with the thread of the corresponding connecting joint, the second thread on the locking ring is also locked with the anti-retraction portion on the rotary joint, which can not only increase the thread locking force of the locking ring, but also prevent the locking force from being reduced due to the rotary joint being forced to move forward.

[0007] Furthermore, the second thread is a sawtooth thread, and the anti-retreat portion is a sawtooth thread or an anti-retreat ring.

[0008] Furthermore, the second thread is a trapezoidal thread, and the anti-retreat portion is a trapezoidal thread or an anti-retreat ring.

[0009] Furthermore, the second thread is a rectangular thread, and the anti-retreat portion is a rectangular thread or an anti-retreat ring.

[0010] Furthermore, the first thread is a trapezoidal thread.

[0011] Furthermore, the number of teeth of the anti-recession portion is 1-5.

[0012] The beneficial effects of the utility model are:

[0013] 1. The cooperation between the second thread and the anti-retraction portion increases the locking ability of the locking ring while preventing the locking force from decreasing due to the forward movement of the rotary joint under force, thereby preventing the locking ring from loosening from the rotary joint and ensuring the stability of the connection between the corresponding connecting joint and the rotary joint.

[0014] 2. The arrangement of the trapezoidal thread, the serrated thread and the rectangular thread can further ensure the stability of the connection between the locking ring and the rotary joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 It is a cross-sectional view of the utility model;

[0017] Figure 3 A cross-sectional view of a second embodiment of the present invention;

[0018] Figure 4 A cross-sectional view of a third embodiment of the present invention;

[0019] Figure 5 It is an axonometric view of the rotary joint in the present invention;

[0020] Figure 6 It is an axonometric view of the locking ring in the present invention.

[0021] In the above drawings:

[0022] 1. Rotary joint; 101. Anti-retraction part;

[0023] 2. Locking ring; 201. First thread; 202. Second thread. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; the structures described in various embodiments can be freely combined without any conflict in structure or principle.

[0025] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., etc., are used solely for distinction and description, and should not be construed as indicating or implying relative importance.

[0027] Below with reference to accompanying drawing some embodiment of the present utility model is described:

[0028] like Figures 1-6 As shown, the utility model proposes a rotary joint assembly for a dialysis pipeline, including a rotary joint 1 and a locking ring 2. The locking ring 2 is coaxially sleeved on the rotary joint 1. A first thread 201 and a second thread 202 are provided on the inner wall of the locking ring 2. The rotary joint 1 is provided with an anti-retraction portion 101 that cooperates with the second thread 202. The first thread 201 is provided to cooperate with the thread on the connecting joint.

[0029] The rotary joint assembly adopts the 6% (Luer) conical joint standard. By providing a second thread 202 on the locking ring 2 and an anti-retraction portion 101 on the rotary joint 1, when the first thread 201 on the locking ring 2 is locked with the thread of the corresponding connecting joint, the second thread 202 on the locking ring 2 is also locked with the anti-retraction portion 101 on the rotary joint 1. In this way, the locking ability of the locking ring 2 is increased, and the locking force caused by the forward movement of the rotary joint 1 under force is prevented from being reduced, thereby preventing the locking ring 2 from loosening from the rotary joint 1, thereby ensuring the stability of the connection between the corresponding connecting joint and the rotary joint 1.

[0030] Furthermore, if Figure 2 As shown, the second thread 202 is a sawtooth thread, and the anti-backward portion 101 is a sawtooth thread or an anti-backward ring.

[0031] When the second thread 202 on the locking ring 2 is screwed into place with the anti-retraction portion 101 on the rotary joint 1, the serrated thread prevents the locking ring 2 from retreating, reducing the possibility of the locking ring 2 loosening from the rotary joint 1. The serrated thread is easier to install and remove, and its serrated design enhances anti-slip and anti-retraction properties, ensuring the stability of the connection between the corresponding connecting joint and the rotary joint 1. Alternatively, an anti-retraction ring can be provided, which can be snapped into the serrated second thread 202, thereby limiting the locking ring 2 through the second thread 202 and reducing the possibility of the locking ring 2 loosening from the rotary joint 1.

[0032] Furthermore, if Figure 3 As shown, in the second embodiment, the second thread 202 is a trapezoidal thread, and the anti-retraction portion 101 is a trapezoidal thread or an anti-retraction ring.

[0033] Trapezoidal threads are easier to install, provide a tighter connection, and are less likely to loosen when connected to the corresponding joint. Alternatively, an anti-retraction ring can be provided. The anti-retraction ring can be snapped into the trapezoidal second thread 202, and the second thread 202 can limit the locking ring 2, thereby reducing the possibility of the locking ring 2 loosening from the rotary joint 1.

[0034] Furthermore, if Figure 4 As shown, in the third embodiment, the second thread 202 is a rectangular thread, and the anti-backward portion 101 is a rectangular thread or an anti-backward ring.

[0035] Compared to conventional straight threads, rectangular threads offer greater connection strength, making them less susceptible to loosening or falling off, ensuring the stability of the connection between the corresponding connector and the rotary joint 1. Alternatively, an anti-backoff ring can be provided, which can be snapped into the rectangular second thread 202. This second thread 202 acts as a position limiter for the locking ring 2, reducing the possibility of the locking ring 2 coming loose from the rotary joint 1.

[0036] Furthermore, if Figure 2-Figure 4 As shown, the first thread 201 is a trapezoidal thread.

[0037] The locking ring 2 is connected to the corresponding connecting joint through a trapezoidal thread, which ensures a tight connection and is not easy to loosen, while avoiding excessive force on the locking ring 2 or the corresponding connecting joint, thereby reducing the force on the second thread 202 and the anti-retreat portion 101, and further preventing the locking ring 2 from retreating, reducing the possibility of the locking ring 2 loosening from the rotary joint 1, and ensuring the stability of the connection between the corresponding connecting joint and the rotary joint 1.

[0038] Furthermore, if Figures 1-4 As shown, the number of teeth of the anti-recession portion 101 is 1-5.

[0039] If the number of teeth is too large, it will be difficult to connect the locking ring 2 to the rotary joint 1, making installation difficult; if the number of teeth is too small, the connection between the locking ring 2 and the rotary joint 1 will be unstable, which may cause the locking ring 2 to fall off the rotary joint 1. Here, three teeth are preferably used. Through this arrangement, the rotary joint 1 will not move forward and the locking block 2 will not loosen backward, reducing the possibility of the locking ring 2 loosening from the rotary joint 1, thereby ensuring the stability of the connection between the corresponding connecting joint and the rotary joint 1.

Claims

1. A rotary joint assembly for a dialysis line, comprising a rotary joint (1) and a locking ring (2), characterized in that: The locking ring (2) is coaxially sleeved on the rotary joint (1); a first thread (201) and a second thread (202) are provided on the inner wall of the locking ring (2); an anti-retraction portion (101) is provided on the rotary joint (1) and is matched with the second thread (202); and the first thread (201) is matched with the thread on the connecting joint.

2. A rotary joint assembly for a dialysis line according to claim 1, characterized in that: The second thread (202) is a sawtooth thread, and the anti-retreat portion (101) is a sawtooth thread or an anti-retreat ring.

3. A rotary joint assembly for a dialysis tubing according to claim 1, characterized in that: The second thread (202) is a trapezoidal thread, and the anti-retraction portion (101) is a trapezoidal thread or an anti-retraction ring.

4. A rotary joint assembly for a dialysis tubing according to claim 1, characterized in that: The second thread (202) is a rectangular thread, and the anti-retraction portion (101) is a rectangular thread or an anti-retraction ring.

5. A rotary joint assembly for a dialysis tubing according to any one of claims 1 to 4, characterized in that: The first thread (201) is a trapezoidal thread.

6. A rotary joint assembly for a dialysis tubing according to any one of claims 1 to 4, characterized in that: The number of teeth of the anti-retreat portion (101) is 1-5.

7. A rotary joint assembly for dialysis tubing according to claim 5, characterized in that: The number of teeth of the anti-retreat portion (101) is 1-5.

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