A peritoneal dialysis catheter seal connector

Abstract

The application belongs to the technical field of medical devices, and discloses a peritoneal dialysis catheter sealing connector, which comprises a shell and further comprises a limiting assembly movably connected to the inside of the shell, and a rotating assembly movably connected to the middle of the outer wall of the shell. The cooperation between the structures such as the rotating drum, the arc groove, the arc plate and the guide groove facilitates the connection of the catheter and the connector. After the arc plate moves a distance, the circular rod is driven to slide into the inside of the guide groove inclined groove, so that the several arc plates drive the gaskets at both ends of the shell to abut against the outer walls of the dialysis catheter and the dialysis bag catheter respectively, and then the gaskets continue to move to drive the dialysis catheter and the dialysis bag catheter to move towards each other, so that the positions of the dialysis catheter and the dialysis bag catheter in the shell are fixed, and the gap between the two and the inner wall of the shell is reduced, thereby improving the overall sealing performance.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically a peritoneal dialysis catheter sealing connector. Background Technology

[0002] Peritoneal dialysis is a dialysis method used to treat chronic renal failure. During peritoneal dialysis treatment, the peritoneal dialysis catheter is the key channel to maintain the smooth progress of treatment. It is surgically implanted into the patient's abdominal cavity, with one end of the catheter inside the abdominal cavity and the other end outside the abdominal wall, which facilitates the injection and drainage of dialysis fluid by doctors and patients during dialysis.

[0003] Currently, traditional Luer connectors are commonly used in clinical practice to connect peritoneal dialysis catheters to dialysate bags. However, with the continuous progress of peritoneal dialysis treatment, dialysate bags need to be changed frequently, requiring repeated insertion and removal of the catheter and Luer connector. During these repeated insertions and removals, the mechanical friction generated may cause wear on the internal sealing structure of the connector, creating tiny gaps between the originally tightly fitted components. This allows dialysate leakage. Furthermore, improper insertion and removal procedures may cause accidental damage to the Luer connector, further compromising its seal. Once leakage occurs, it not only wastes dialysate but also affects the normal dosage and effectiveness of dialysis treatment and may increase the risk of infection. Therefore, a peritoneal dialysis catheter sealing connector is proposed to solve the problems mentioned in the background art. Summary of the Invention

[0004] To address the problems mentioned in the background section, this invention provides a peritoneal dialysis catheter sealing connector, which has the advantages of facilitating catheter-connection and improving sealing performance.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a peritoneal dialysis catheter sealing connector, comprising a housing, and further comprising:

[0006] A limiting component, which is movably connected to the inside of the housing;

[0007] A rotating assembly, which is movably connected to the middle of the outer wall of the housing, and is movably connected to a limiting assembly;

[0008] A dialysis catheter, wherein the dialysis catheter is located on one side of the inner wall of the outer shell, and the other side of the inner wall of the outer shell is connected to a dialysis bag catheter;

[0009] The outer casing has slots at both ends;

[0010] The limiting component includes a rotating cylinder, with four arc grooves circumferentially formed at both ends of the rotating cylinder. Two first sliding grooves are symmetrically formed on the outer wall of the middle part of the rotating cylinder, and a limiting plate is movably connected inside the arc grooves.

[0011] An arc-shaped plate is movably engaged on one side of the limiting plate, and a gasket is fixedly connected to the side of the arc-shaped plate near the arc groove. Round rods are fixedly connected to both sides of the limiting plate, and a guide groove that mates with the round rod is provided on the inner wall of the outer shell.

[0012] Preferably, the rotating assembly includes a turntable, the inner wall of which has two symmetrically arranged circular blocks, and the outer wall of which has two viewing windows arranged in a ring.

[0013] Preferably, a stop block is movably connected to the middle of the inner wall of the outer casing, and two spring pieces are fixedly connected to the side of the stop block away from the viewing window. The stop block is elastically connected to the outer casing through the spring pieces.

[0014] Preferably, two second sliding grooves are formed in a ring at the middle of the outer wall of the outer shell. The second sliding groove consists of two vertical grooves and one horizontal groove, and the two ends of the horizontal groove are respectively connected to one end of the two vertical grooves.

[0015] Preferably, the length of the first slide groove is the same as the length of the vertical groove of the second slide groove, and the circular block is movably engaged inside the second slide groove and the first slide groove.

[0016] Preferably, the outer wall of the turntable is provided with a plurality of raised stripes, the first groove is used to circumferentially limit the circular block, and the viewing window is located directly above the second groove.

[0017] Preferably, a square groove for limiting the arc plate is provided on one side of the limiting plate, a connecting post is provided on the side of the limiting plate away from the arc plate and is movably engaged inside the arc groove, and a limiting groove that cooperates with the limiting plate is provided on the inner wall of the outer shell.

[0018] Preferably, the shape of the slot is adapted to the dialysis catheter and dialysis bag catheter, the inner wall of the outer shell is made of silicone material, and the outer wall of the outer shell is made of plastic material.

[0019] Preferably, a gasket is fixedly connected to the side of the arc-shaped plate near the rotating cylinder. The gasket is made of silicone material, and the inner wall of the outer shell has a groove that matches the arc-shaped plate.

[0020] Preferably, a gap is left between one side of the gasket and the groove on the inner wall of the outer casing, the guide groove is composed of a straight groove and an inclined groove connected together, and the round rod is initially located inside the straight groove of the guide groove.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] This invention facilitates the connection of the catheter and connector through the cooperation of structures such as the rotating cylinder, arc groove, arc plate, and guide groove, thereby improving the overall sealing performance. When the rotating cylinder rotates, the limiting plate moves along the trajectory of the arc groove towards the slot, so that the limiting plate can drive the arc plate to extend out of the inner shell. After the arc plate moves a certain distance, it will drive the round rod to slide into the inclined groove of the guide groove, so that several arc plates drive the gaskets at both ends of the outer shell to abut against the outer walls of the dialysis catheter and dialysis bag catheter respectively. As the gaskets continue to move, they can drive the dialysis catheter and dialysis bag catheter to move towards each other. This not only fixes the position of the dialysis catheter and dialysis bag catheter inside the outer shell, but also reduces the gap between them and the inner wall of the outer shell, thereby improving the overall sealing performance.

[0023] This invention facilitates torque observation through the cooperation of structures such as a turntable, a circular block, a viewing window, and a second slide groove, thereby preventing the device from being over-tightened. The viewing window is located directly above the second slide groove, allowing clear observation of the circular block's sliding trajectory as the turntable drives it within the groove. The second slide groove, consisting of one horizontal groove and two vertical grooves, ensures that the circular block can only rotate a predetermined length along its trajectory, thus preventing excessive rotation and damage to the device. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the front section structure of the outer shell of the present invention;

[0026] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0027] Figure 4 for Figure 2 Enlarged view at point B in the middle;

[0028] Figure 5 This is a partially enlarged cross-sectional view of the limiting component of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the limiting component of the present invention;

[0030] Figure 7 for Figure 6 Enlarged view at point C;

[0031] Figure 8 This is an exploded view of the rotating component of the present invention;

[0032] Figure 9 This is a schematic diagram showing the positional relationship between the outer shell, the limiting component, and the rotating component of the present invention.

[0033] In the diagram: 1. Outer shell; 2. Limiting assembly; 21. Rotating cylinder; 22. Arc groove; 23. First sliding groove; 24. Limiting plate; 25. Arc plate; 26. Gasket; 27. Round rod; 28. Guide groove; 29. ​​Limiting groove; 3. Rotating assembly; 31. Turntable; 32. Round block; 33. Viewing window; 34. Stop block; 35. Spring piece; 36. Second sliding groove; 4. Dialysis catheter; 5. Dialysis bag catheter; 6. Locking slot. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] like Figures 1 to 9 As shown, the present invention provides a peritoneal dialysis catheter sealing connector, including a housing 1, and further comprising:

[0036] Limiting component 2 is movably connected inside the housing 1;

[0037] Rotating component 3 is movably connected to the middle of the outer wall of housing 1, and rotating component 3 is movably connected to limiting component 2;

[0038] Dialysis catheter 4 is located on one side of the inner wall of the outer shell 1, and the other side of the inner wall of the outer shell 1 is connected to the dialysis bag catheter 5.

[0039] Slot 6, slot 6 is provided at both ends inside the outer casing 1;

[0040] The limiting component 2 includes a rotating cylinder 21. Four arc grooves 22 are provided at both ends of the rotating cylinder 21. Two first sliding grooves 23 are symmetrically provided on the outer wall of the middle part of the rotating cylinder 21. The internal part of the arc grooves 22 is movably connected to the limiting plate 24.

[0041] An arc-shaped plate 25 is movably latched on one side of the limiting plate 24. A gasket 26 is fixedly connected to the side of the arc-shaped plate 25 near the arc groove 22. Round rods 27 are fixedly connected to both sides of the limiting plate 24. A guide groove 28 that cooperates with the round rod 27 is opened on the inner wall of the outer shell 1.

[0042] The above scheme is adopted: when the rotating drum 21 rotates, the limiting plate 24 moves towards the slot 6 along the trajectory of the arc groove 22, so that the limiting plate 24 can drive the arc plate 25 to extend out of the inside of the outer shell 1. After the arc plate 25 moves a certain distance, it will drive the round rod 27 to slide into the inclined groove of the guide groove 28, so that several arc plates 25 drive the gaskets 26 at both ends of the outer shell 1 to abut against the outer walls of the dialysis catheter 4 and the dialysis bag catheter 5 respectively. Then, after the gaskets 26 continue to move, they can drive the dialysis catheter 4 and the dialysis bag catheter 5 to move towards each other. In this way, while fixing the position of the dialysis catheter 4 and the dialysis bag catheter 5 inside the outer shell 1, the gap between the two and the inner wall of the outer shell 1 can also be reduced, thereby improving the overall sealing performance.

[0043] like Figure 4 , Figure 8 and Figure 9 As shown, the rotating assembly 3 includes a turntable 31. Two circular blocks 32 are symmetrically arranged on the inner wall of the turntable 31. Two viewing windows 33 are opened in a ring on the outer wall of the turntable 31. A stop block 34 is movably connected to the middle of the inner wall of the outer shell 1. Two spring pieces 35 are fixedly connected to the side of the stop block 34 away from the viewing window 33. The stop block 34 is elastically connected to the outer shell 1 through the spring pieces 35. Two second sliding grooves 36 are opened in a ring in the middle of the outer wall of the outer shell 1. The second sliding groove 36 consists of two vertical grooves and one horizontal groove. The two ends of the horizontal groove are respectively connected to one end of the two vertical grooves.

[0044] The above solution is adopted: the viewing window 33 is opened directly above the second slide groove 36, so that when the turntable 31 drives the round block 32 to slide inside the second slide groove 36, the sliding trajectory of the round block 32 can be clearly observed. Since the second slide groove 36 is composed of one horizontal groove and two vertical grooves, the round block 32 can only rotate along the trajectory of the second slide groove 36 for a predetermined length, thereby preventing the round block 32 from rotating excessively and causing damage to the device.

[0045] like Figure 8 and Figure 9 As shown, the length of the first slide groove 23 is the same as the length of the vertical groove of the second slide groove 36. The circular block 32 is movably engaged inside the second slide groove 36 and the first slide groove 23. The outer wall of the turntable 31 is provided with several raised stripes. The first slide groove 23 is used to circumferentially limit the circular block 32. The viewing window 33 is located directly above the second slide groove 36.

[0046] The above solution involves providing several raised stripes on the outer wall of the turntable 31. The purpose of these raised stripes is to increase the friction between the turntable 31 and the operator's hand. The greater friction allows the hand to grip the turntable 31 better, making the application of force more effective and thus making it easier to rotate the turntable 31.

[0047] like Figure 2 , Figure 3 and Figure 6 As shown, a square groove for limiting the arc plate 25 is provided on one side of the limiting plate 24. A connecting post is provided on the side of the limiting plate 24 away from the arc plate 25, which is movably engaged inside the arc groove 22. A limiting groove 29 that cooperates with the limiting plate 24 is provided on the inner wall of the outer shell 1. The shape of the slot 6 is adapted to the dialysis catheter 4 and the dialysis bag catheter 5. The inner wall of the outer shell 1 is made of silicone material, and the outer wall of the outer shell 1 is made of plastic material.

[0048] The above solution is adopted: a square groove is provided on one side of the limiting plate 24. Its function is that when the round rod 27 slides into the inclined groove of the guide groove 28, the square groove in the limiting plate 24 limits the arc plate 25 in the vertical direction. Therefore, when the round rod 27 slides along the trajectory of the guide groove 28, the arc plate 25 can only move in a straight line in the vertical direction within the limiting plate 24, thereby ensuring the stable operation of the device.

[0049] The inner wall of the outer shell 1 is made of silicone material. Its function is that, due to the stable chemical properties of silicone, it is not easily corroded or degraded by the chemical components in the dialysate, thus ensuring that the composition and properties of the dialysate are not affected. At the same time, the elasticity and softness of silicone allow it to form a good seal after the dialysis catheter 4 and dialysis bag catheter 5 are inserted, thereby effectively preventing air from entering and dialysate from flowing out, thus maintaining the airtightness of the peritoneal dialysis system and reducing the risk of infection.

[0050] like Figure 3 , Figures 5 to 7 As shown, a gasket 26 is fixedly connected to the side of the arc plate 25 near the rotating cylinder 21. The gasket 26 is made of silicone material. The inner wall of the outer shell 1 has a groove that matches the arc plate 25. There is a gap between one side of the gasket 26 and the groove on the inner wall of the outer shell 1. The guide groove 28 is composed of a straight groove and an inclined groove connected together. The round rod 27 is initially located inside the straight groove of the guide groove 28.

[0051] The above solution is adopted: In the initial state, the gasket 26 has a gap with the groove on the inner wall of the outer casing 1. Its function is specifically to... Figure 3 It can be seen that when the arc plate 25 moves the gasket 26 toward the inside of the outer shell 1, the gap between the gasket 26 and the inner wall of the groove prevents unnecessary friction between the gasket 26 and the groove. When the arc plate 25 extends a certain distance, the round rod 27 moves the arc plate 25 toward the rotating cylinder 21 along the trajectory of the guide groove 28, causing the gasket 26 to abut against the groove and simultaneously abut against the opposite ends of the dialysis catheter 4 and the dialysis bag catheter 5, thereby effectively limiting the position of the dialysis catheter 4 and the dialysis bag catheter 5.

[0052] The working principle and usage process of this invention are as follows: First, the operator inserts the dialysis catheter 4 and the dialysis bag catheter 5 from both ends of the outer shell 1, so that the dialysis catheter 4 and the dialysis bag catheter 5 are engaged with the outer shell 1 through the two slots 6. After the insertion is completed, the operator pushes the turntable 31 in the direction of the spring piece 35. As the turntable 31 moves, the compression block 34 retracts into the interior of the outer shell 1. At the same time, as the turntable 31 moves, it also drives the round block 32 to slide inside the vertical grooves of the first slide groove 23 and the second slide groove 36. The operator observes the movement trajectory of the round block 32 through the viewing window 33. When the round block 32 slides through the vertical groove into the horizontal groove of the second slide groove 36, the operator rotates the turntable 31, so that the turntable 31 drives the round block 32 to slide into the horizontal groove of the second slide groove 36. Since the first slide groove 23 limits the circumferential movement of the round block 32, the round block 32 will drive the rotating cylinder 21 to rotate synchronously through the first slide groove 23.

[0053] As the rotating drum 21 rotates, the connecting post on one side of the limiting plate 24 slides along the trajectory of the arc groove 22. Because the limiting groove 29 circumferentially limits the limiting plate 24, the limiting plate 24 can only move horizontally in the direction of the slot 6. Simultaneously, the limiting plate 24 moves, causing the arc plate 25 and the gasket 26 to move together. This causes the arc plate 25 to slide along the inside of the guide groove 28, while the arc plate 25 and the gasket 26 continue to move linearly, thus causing the arc plate 25 to extend beyond the interior of the outer casing 1. When the round rod 2... 7 After sliding into the inside of the inclined groove of the guide groove 28, the round rod 27 will drive the arc plate 25 to move towards the turntable 31 along the trajectory of the inclined groove. After several arc plates 25 move, they will drive the gaskets 26 at both ends of the outer shell 1 to abut against the outer walls of the dialysis catheter 4 and the dialysis bag catheter 5. As the gaskets 26 continue to move towards the turntable 31, they can push the dialysis catheter 4 and the dialysis bag catheter 5 to move towards each other, thereby making the connection between the dialysis catheter 4 and the dialysis bag catheter 5 and the outer shell 1 tighter, thus reducing gaps and reducing the risk of leakage.

[0054] When the round rod 27 slides to the bottom of the inclined groove of the guide groove 28, the turntable 31 also drives the round block 32 to slide to the connection between the horizontal groove of the second sliding groove 36 and another vertical groove. Then the operator slides the turntable 31 away from the spring piece 35, so that the turntable 31 drives the round block 32 to slide into the interior of another vertical groove, thereby limiting the round block 32 circumferentially, so that the round block 32 cannot continue to rotate, and thus the round block 32 is fixed, so that the position of the gasket 26 is locked, thereby facilitating the fixing of the dialysis catheter 4 and the dialysis bag catheter 5 inside the outer shell 1.

[0055] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0056] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A peritoneal dialysis catheter sealing connector, comprising a housing (1), characterized in that: It also includes a limiting component (2), which is movably connected inside the housing (1); Rotating component (3), which is movably connected to the middle of the outer wall of the outer shell (1), and is movably connected to the limiting component (2); Dialysis catheter (4), the dialysis catheter (4) is located on one side of the inner wall of the outer shell (1), and the other side of the inner wall of the outer shell (1) is connected to the dialysis bag catheter (5). Card slot (6), both ends of the outer shell (1) are provided with card slot (6); The limiting component (2) includes a rotating cylinder (21), with four arc grooves (22) circumferentially opened at both ends of the rotating cylinder (21). Two first sliding grooves (23) are symmetrically opened on the outer wall of the middle part of the rotating cylinder (21), and a limiting plate (24) is movably connected inside the arc grooves (22). An arc plate (25) is movably latched on one side of the limiting plate (24), and a gasket (26) is fixedly connected to the side of the arc plate (25) near the arc groove (22). A round rod (27) is fixedly connected to both sides of the limiting plate (24), and a guide groove (28) that cooperates with the round rod (27) is opened on the inner wall of the outer shell (1). The rotating component (3) includes a turntable (31), the inner wall of which is symmetrically arranged with two circular blocks (32), and the outer wall of which is circumferentially opened with two viewing windows (33). Two second sliding grooves (36) are circumferentially formed in the middle of the outer wall of the outer shell (1). The second sliding groove (36) is composed of two vertical grooves and one horizontal groove. The two ends of the horizontal groove are respectively connected to one end of the two vertical grooves. The outer wall of the turntable (31) is provided with several raised stripes. The first slide groove (23) is used to circumferentially limit the circular block (32). The viewing window (33) is located directly above the second slide groove (36).

2. The peritoneal dialysis catheter sealing connector according to claim 1, characterized in that: A stop (34) is movably connected to the middle of the inner wall of the outer shell (1). Two spring pieces (35) are fixedly connected to the side of the stop (34) away from the viewing window (33). The stop (34) is elastically connected to the outer shell (1) through the spring pieces (35).

3. The peritoneal dialysis catheter sealing connector according to claim 1, characterized in that: The length of the first groove (23) is the same as the length of the vertical groove of the second groove (36), and the circular block (32) is movably engaged inside the second groove (36) and the first groove (23).

4. The peritoneal dialysis catheter sealing connector according to claim 1, characterized in that: The limiting plate (24) has a square groove on one side for limiting the arc plate (25). The limiting plate (24) away from the arc plate (25) has a connecting post that is movably engaged inside the arc groove (22). The inner wall of the outer shell (1) has a limiting groove (29) that cooperates with the limiting plate (24).

5. The peritoneal dialysis catheter sealing connector according to claim 1, characterized in that: The shape of the slot (6) is adapted to the dialysis catheter (4) and the dialysis bag catheter (5). The inner wall of the outer shell (1) is made of silicone material, and the outer wall of the outer shell (1) is made of plastic material.

6. The peritoneal dialysis catheter sealing connector according to claim 1, characterized in that: A gasket (26) is fixedly connected to the side of the arc plate (25) near the rotating cylinder (21). The gasket (26) is made of silicone material. The inner wall of the outer shell (1) has a groove that matches the arc plate (25).

7. The peritoneal dialysis catheter sealing connector according to claim 1, characterized in that: There is a gap between one side of the gasket (26) and the groove on the inner wall of the outer shell (1). The guide groove (28) is composed of a straight groove and an inclined groove connected together. The round rod (27) is initially located inside the straight groove of the guide groove (28).

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