A peritoneal dialysis extension tube

Abstract

The application discloses a peritoneal dialysis external connecting pipe and relates to the technical field of dialysis external connecting pipes.The peritoneal dialysis external connecting pipe comprises an internal thread protection cap, an external thread joint, a dialysis machine end connecting assembly, a patient end connecting assembly and a liquid leakage prevention assembly.The thread surface of the internal thread protection cap is threadedly connected with the thread surface of the external thread joint.The dialysis machine end connecting assembly is arranged on the external thread joint and is used for controlling the opening and closing of a pipe at one end of a dialysis machine.The patient end connecting assembly is arranged on the internal thread protection cap and is used for controlling the opening and closing of a pipe at one end of a patient.The liquid leakage prevention assembly is arranged on the internal thread protection cap and is used for plugging a connecting port when the dialysis machine end connecting assembly and the patient end connecting assembly are connected.The clamping and stabilizing assembly is arranged on the external thread joint and is used for fixing the dialysis machine end connecting assembly and the patient end connecting assembly together when the two assemblies are connected, so that the two assemblies cannot move.The peritoneal dialysis external connecting pipe solves the problems that an existing external connecting pipe is not easy to be quickly connected and is prone to liquid leakage when the external connecting pipe is used.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dialysis external connecting pipe, in particular to a peritoneal dialysis external connecting pipe. BACKGROUND

[0002] Peritoneal dialysis (PD) is a kind of dialysis method using human body's own peritoneum as dialysis membrane. Through the exchange of solute and water between the dialysate filled into the abdominal cavity and the plasma components in the capillary vessels on the other side of the peritoneum, the metabolic products and excess water in the body are removed, and the necessary substances for the body are supplemented at the same time.

[0003] The abdominal dialysis external connecting pipe, as its name implies, is a connecting pipe used to connect the abdominal dialysis pipe and the peritoneal dialysis catheter. One end of the pipe is provided with a titanium joint for connecting the abdominal dialysis pipe, and the other end is provided with a threaded joint for connecting the peritoneal dialysis catheter. The connecting end of the corresponding peritoneal dialysis catheter is provided with a screw hole matched with the corresponding threaded joint, and the end is connected with a drainage bag for guiding the flow of liquid.

[0004] For peritoneal dialysis patients, peritoneal dialysis fluid replacement needs to be performed 3 to 4 times a day, and two kinds of pipes are usually used, one of which is connected with the dialysis machine, and the other is connected with the patient's abdomen. In order to reduce the discomfort of the patient when the needle is inserted, the pipe connected with the patient's abdomen is usually attached to the patient's abdomen for a long time during the dialysis process. Then, during the dialysis process, the two pipes are connected through an external connecting pipe, so as to achieve the purpose of dialysis. However, the existing external connecting pipe is not easy to quickly connect, and liquid leakage is prone to occur. SUMMARY

[0005] The present application aims to provide a peritoneal dialysis external connecting pipe which solves the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a peritoneal dialysis external connecting pipe, comprising an internal thread protection cap and an external thread joint, the thread surface of the internal thread protection cap is threadedly connected with the thread surface of the external thread joint, and the peritoneal dialysis external connecting pipe further comprises:

[0007] A dialysis machine end connecting assembly is arranged on the external thread joint, which is used to control the opening and closing of the pipe at one end of the dialysis machine;

[0008] A patient end connecting assembly is arranged on the internal thread protection cap, which is used to control the opening and closing of the pipe at one end of the patient;

[0009] A liquid leakage prevention assembly is arranged on the internal thread protection cap, which is used to block the connecting port when the dialysis machine end connecting assembly and the patient end connecting assembly are connected.

[0010] Clamping and stabilizing assembly arranged on the outer threaded joint for fixing the dialysis machine end connecting assembly and the patient end connecting assembly together when they are connected.

[0011] Optionally, the dialysis machine end connecting assembly comprises:

[0012] The cavity chamber one is provided with a through circular through groove at the center of the end face of the outer threaded joint, the groove wall of the through groove is fixedly connected with the outer surface of the cavity chamber one, the end face of the cavity chamber one away from the one end of the outer threaded joint is fixedly connected with a three-way hose, the inside of the cavity chamber one close to the one end of the three-way hose is provided with a slot one, the groove wall end face of the slot one is fixedly connected with a spring one, the other end of the spring one is abutted with a flow resistance ball one, and the surface of the flow resistance ball one is further abutted with a flow pipe.

[0013] Optionally, the dialysis machine end connecting assembly further comprises:

[0014] The end of the flow pipe close to the flow resistance ball one is fixedly connected with the side surface of the limiting block, the end of the flow pipe close to the flow resistance ball one is further provided with a water flow groove one, and the midpoint of the outer surface of the flow pipe is further fixedly connected with a limiting plate, the inside end face of the cavity chamber one away from the one end of the three-way hose is further provided with a limiting groove, the groove wall of the limiting groove is slidingly connected with the surface of the limiting block, and the end face of the cavity chamber one provided with the limiting groove is further provided with an outlet groove equal to the flow pipe, and the groove wall of the outlet groove is slidingly connected with the outer surface of the flow pipe.

[0015] Optionally, the patient end connecting assembly comprises:

[0016] The cavity chamber two is provided with a through circular through groove at the center of the end face of the inner threaded protective cap, the groove wall of the through groove is rotationally connected with the outer surface of the cavity chamber two, the one end of the cavity chamber two away from the cavity chamber one is fixedly connected with a hose, the inside of the cavity chamber two close to the one end of the hose is provided with a slot two, the groove wall end face of the slot two is fixedly connected with a spring two, and the other end of the spring two is abutted with a flow resistance ball two.

[0017] Optionally, the patient end connecting assembly further comprises:

[0018] The inlet groove is provided on the inner end face of the cavity chamber two away from the hose, the groove wall diameter of the inlet groove is the same as the diameter of the flow pipe, the outer surface of the flow pipe can slide on the groove wall of the inlet groove, and the end of the flow pipe close to the one end of the cavity chamber two is provided with a water flow groove two.

[0019] Optionally, the liquid leakage prevention assembly comprises:

[0020] The annular notch is arranged on the outer end surface of the cavity chamber II, and the groove wall end surface of the annular notch is fixedly connected with the spring III, and the other end of the spring III is fixedly connected with the annular blocking block, and the side surface of the annular blocking block is slidingly connected with the groove wall of the annular notch.

[0021] Optionally, the clamping and stabilizing assembly comprises:

[0022] The fixed plate is provided with a through circular notch on the end surface, the groove wall of the notch is fixedly connected with the outer surface of the cavity chamber I, the upper end surface of the fixed plate is hingedly connected with the protection frame I, the end of the protection frame I away from the fixed plate is provided with a semicircular notch, the groove wall of the notch is clamped and fixed with the upper end surface of the cavity chamber II, the lower end surface of the fixed plate is hingedly connected with the protection frame II, and the end of the protection frame II away from the fixed plate is also provided with a semicircular notch.

[0023] Optionally, the clamping and stabilizing assembly further comprises:

[0024] The sliding frame is fixedly connected with the surface of the protection frame I, the inner upper surface of the sliding frame is fixedly connected with the spring IV, the upper and lower ends of the spring IV are fixedly connected with the sliding column, the surface of the sliding column is slidingly connected with the inner wall of the sliding frame, the lower surface of the sliding column is fixedly connected with the clamping block, and the surface of the protection frame II is also fixedly connected with the limiting frame.

[0025] Compared with the prior art, the present application has the following advantages:

[0026] Firstly, the outer threaded connector is connected with the inner threaded protective cap, and then the flow-through pipe drives the flow-blocking ball I to move to the inside of the cavity chamber I under the action of the cavity chamber II, so that the pipeline is connected, and after the dialysis is completed, the outer threaded connector is twisted off the inner threaded protective cap, so that the flow-blocking ball I and the flow-through pipe move to the outside of the cavity chamber I, thereby achieving the purpose of automatic sealing of the opening, and effectively preventing the problem of liquid leakage of the pipeline during connection.

[0027] Secondly, when the outer threaded connector is connected with the inner threaded protective cap, it is a rotating connection, so that the cavity chamber I and the cavity chamber II are slowly connected, so that the opening of the outer tube during connection is slowly opened, the flow rate of the dialysis liquid is slowly increased, and time is provided for the patient to adapt, thereby further reducing the discomfort of the patient during dialysis treatment.

[0028] Thirdly, the application further saves the steps of first clamping the pipeline with a flow stop clamp to cut off the flow, then connecting the pipeline, and then taking away the flow stop clamp to connect the two dialysis tubes, so that connecting the two dialysis tubes becomes simpler, and the practicability of the external pipe is further improved.

[0029] Fourthly, when the cavity chamber one and the cavity chamber two are close to each other, the annular blocking block first contacts the end face of the cavity chamber one, and then moves to the inside of the annular slot, so that the connecting end is first closed under the action of the annular blocking block before the cavity chamber one and the cavity chamber two are connected, so that the connection process is cleaner and more hygienic.

[0030] Fifthly, the cavity chamber two is clamped by the protection frame one and the protection frame two, so that the external pipe has the following advantages:

[0031] Firstly, the clamping of the protection frame one and the protection frame two can further stabilize the connection of the cavity chamber one and the cavity chamber two, so that the connection is not movable and the possibility of liquid leakage is reduced.

[0032] Secondly, in order to facilitate installation, the thread surfaces of the external thread joint and the internal thread protection cap are shallow and easy to rotate and disconnect, and the external thread joint and the internal thread protection cap are wrapped by the protection frame one and the protection frame two to prevent loosening under the action of external friction during dialysis, which causes unstable connection of the cavity chamber one and the cavity chamber two. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is a front view of the structure of the application;

[0034] Figure 2 It is a rear view of the structure of the application;

[0035] Figure 3 It is a cross-sectional view of the internal structure of the sliding frame in the application;

[0036] Figure 4 It is a cross-sectional view of the internal structure of the internal thread protection cap in the application;

[0037] Figure 5 It is a cross-sectional view of the internal structure of the cavity chamber one in the application;

[0038] Figure 6 It is a cross-sectional view of the internal structure of the cavity chamber two in the application;

[0039] Figure 7 It is a front view of the structure of the annular blocking block in the application;

[0040] Figure 8 It is aFigure 3 Enlarged view of the structure at A;

[0041] Figure 9 For the invention Figure 5 Enlarged view of the structure at B;

[0042] Figure 10 For the invention Figure 5 Enlarged view of the structure at C;

[0043] Figure 11 For the invention Figure 6 Enlarged view of the structure at D.

[0044] In the figure: 1, hose; 2, internally threaded protective cap; 3, externally threaded connector; 4, three-way hose; 5, protective frame one; 6, protective frame two; 7, fixed plate; 8, cavity chamber two; 9, cavity chamber one; 10, notch one; 11, spring one; 12, flow-blocking ball one; 13, flow-through pipe; 14, flow-blocking ball two; 15, spring two; 16, notch two; 17, annular blocking block; 18, spring four; 19, sliding frame; 20, limiting frame; 21, sliding column; 22, limiting block; 23, limiting groove; 24, water flow channel one; 25, spring three; 26, water flow channel two; 27, limiting plate; 28, inlet groove; 29, annular notch; 30, clamping block. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0046] Embodiment one, please refer to Figures 1 to 11 The present embodiment provides a technical solution: a peritoneal dialysis external connecting tube, comprising an internally threaded protective cap 2 and an externally threaded connector 3, the threaded surface of the internally threaded protective cap 2 is threadedly connected with the threaded surface of the externally threaded connector 3, the peritoneal dialysis external connecting tube further comprises a dialysis machine end connecting assembly, the dialysis machine end connecting assembly is arranged on the externally threaded connector 3, and the dialysis machine end connecting assembly comprises:

[0047] Cavity chamber one 9, a circular through groove is formed at the center of the end surface of the externally threaded connector 3, the groove wall of the through groove is fixedly connected with the outer surface of the cavity chamber one 9, the end surface of the end of the cavity chamber one 9 away from the externally threaded connector 3 is fixedly connected with a three-way hose 4, a notch one 10 is formed at one end of the cavity chamber one 9 close to the three-way hose 4, the groove wall end surface of the notch one 10 is fixedly connected with a spring one 11, the other end of the spring one 11 abuts against a flow-blocking ball one 12, and the surface of the flow-blocking ball one 12 further abuts against a flow-through pipe 13;

[0048] The limiting block 22 is fixedly connected with the side surface of the limiting block 22 near the one end of the flow resistance ball 12, and the end of the flow passage pipe 13 near the one end of the flow resistance ball 12 is also provided with a water flow groove 24, and the outer surface midpoint of the flow passage pipe 13 is also fixedly connected with a limiting plate 27, and the inner end surface of the cavity chamber 9 far from the one end of the three-way hose 4 is also provided with a limiting groove 23, the groove wall of the limiting groove 23 is slidingly connected with the surface of the limiting block 22, and the end surface of the cavity chamber 9 provided with the limiting groove 23 is also provided with an outlet groove as large as the flow passage pipe 13, and the groove wall of the outlet groove is slidingly connected with the outer surface of the flow passage pipe 13.

[0049] More specifically, in the present embodiment: when using the external connecting pipe, first, the three-way hose 4 is connected with the dialysis machine, then the external thread joint 3 is connected with the internal thread protective cap 2, and further, the three-way hose 4 is connected with the hose 1, when the external thread joint 3 is connected with the internal thread protective cap 2, the flow resistance ball 12 is moved to the inside of the cavity chamber 9 under the action of the limiting plate 27, and at the same time, the spring 11 is compressed, when the flow resistance ball 12 is moved to the inside of the cavity chamber 9, a gap is formed between the flow resistance ball 12 and the limiting groove 23, and through the gap, the dialysis liquid in the cavity chamber 9 flows into the flow passage pipe 13 to be used, so as to achieve the purpose of connecting the pipeline flow;

[0050] Then, after the dialysis is completed, the external thread joint 3 is twisted off from the internal thread protective cap 2, which further increases the gap between the cavity chamber 9 and the cavity chamber 8, and then under the action of the spring 11, the flow resistance ball 12 and the flow passage pipe 13 are moved to the outside of the cavity chamber 9, and further, the flow resistance ball 12 blocks the opening of the limiting groove 23, so as to achieve the purpose of stopping the flow at one end of the dialysis machine;

[0051] The setting of the dialysis machine end connecting assembly, by connecting the external thread joint 3 with the internal thread protective cap 2, and further moving the flow resistance ball 12 and the flow passage pipe 13 to the inside of the cavity chamber 9 under the action of the cavity chamber 8, so as to achieve the purpose of connecting the pipeline, and after the dialysis is completed, the external thread joint 3 is twisted off from the internal thread protective cap 2, and then the flow resistance ball 12 and the flow passage pipe 13 are moved to the outside of the cavity chamber 9, so as to achieve the purpose of automatically blocking the opening, which can effectively prevent the problem of liquid leakage of the pipeline during connection;

[0052] When the outer threaded joint 3 is connected with the inner threaded protective cap 2, the connection is a rotating connection, so that the cavity chamber one 9 and the cavity chamber two 8 are slowly connected, so that the opening of the external pipe is slowly opened when connected, and the flow rate of the dialysis liquid is slowly increased, which provides time for the patient to adapt, and further reduces the discomfort of the patient during dialysis treatment.

[0053] It is worth noting that the patient end connecting assembly is also included in the embodiment, which is arranged on the inner threaded protective cap 2, and the patient end connecting assembly includes:

[0054] The cavity chamber two 8 is provided with a through circular through slot at the center of the end face of the inner threaded protective cap 2, the slot wall of the through slot is in rotating connection with the outer surface of the cavity chamber two 8, the cavity chamber two 8 is fixedly connected with the hose 1 at one end away from the cavity chamber one 9, a slot two 16 is arranged at one end of the cavity chamber two 8 close to the hose 1, the slot wall end face of the slot two 16 is fixedly connected with a spring two 15, and the other end of the spring two 15 abuts against a flow resistance ball two 14;

[0055] The inlet slot 28 is arranged on the inner end face of the cavity chamber two 8 away from the hose 1, the slot wall diameter of the inlet slot 28 is the same as the diameter of the flow-through pipe 13, the outer surface of the flow-through pipe 13 can slide on the slot wall of the inlet slot 28, and the end portion of the flow-through pipe 13 close to one end of the cavity chamber two 8 is provided with a water flow slot two 26.

[0056] More specifically, in the embodiment, when the external pipe is used, first, the hose 1 is connected with the needle, and then connected with the abdomen of the patient, then the outer threaded joint 3 is aligned and connected with the inner threaded protective cap 2, so that the interval between the cavity chamber one 9 and the cavity chamber two 8 is smaller, and then the two ends of the flow-through pipe 13 abut against the flow resistance ball one 12 and the flow resistance ball two 14 respectively, then the interval between the cavity chamber one 9 and the cavity chamber two 8 becomes smaller and smaller, further the flow resistance ball one 12 moves to the inside of the cavity chamber one 9, so that the gap between the flow resistance ball one 12 and the limiting slot 23 is generated, the flow resistance ball two 14 moves to the inside of the cavity chamber two 8, so that the gap between the flow resistance ball two 14 and the inlet slot 28 is generated, and at the same time, the spring one 11 and the spring two 15 are compressed, so that the three-way hose 4 and the hose 1 are connected, and the patient is dialyzed, when the dialysis is completed, the outer threaded joint 3 is unscrewed from the inner threaded protective cap 2, so that the interval between the cavity chamber one 9 and the cavity chamber two 8 is larger, and then the flow resistance ball one 12 and the flow resistance ball two 14 are reset under the action of the spring one 11 and the spring two 15, further the two pipes are disconnected, and the flow is cut off;

[0057] The patient-end connection component is designed to allow the flow tube 13 to push the flow-blocking ball 14 into the cavity 8, creating a gap between the flow-blocking ball 14 and the inlet groove 28, thus achieving the function of a passage. It will also automatically reset when disconnected, further improving the practicality and convenience of this external connection.

[0058] Furthermore, its automatic opening and closing feature eliminates the need for the steps of first using a flow stop clamp to cut off the flow during pipe connection, then connecting the pipes, and finally removing the flow stop clamp to reconnect them. This simplifies the connection of two dialysis tubes and further enhances the practicality of this external connector.

[0059] Example 2, based on the above examples:

[0060] Please see Figure 5 , Figure 7 and Figure 9 In this embodiment, a leak-proof component is included, which is disposed on the internal thread protective cap 2. The leak-proof component includes:

[0061] An annular groove 29 is formed on the outer end face of the cavity 28 away from the hose 1, and a spring 3 25 is fixedly connected to the end face of the groove wall of the annular groove 29. An annular blocking block 17 is fixedly connected to the other end of the spring 3 25. The side of the annular blocking block 17 is slidably connected to the groove wall of the annular groove 29.

[0062] More specifically, in this embodiment: when the first cavity 9 and the second cavity 8 approach each other, the annular obstruction block 17 will first contact the end face of the first cavity 9, and then move into the interior of the annular groove 29, so that before the first cavity 9 and the second cavity 8 are connected to each other, the connection end will be sealed first under the action of the annular obstruction block 17, making the connection process cleaner and more hygienic.

[0063] When cavity 19 and cavity 28 move away from each other, the annular obstruction block 17 will be pressed tightly against the end face of cavity 19 by the action of spring 3 25. Only when the opening ends of cavity 19 and cavity 28 are blocked will cavity 19 and cavity 28 be separated from each other. During use, since the flow-blocking ball 12 and flow-blocking ball 2 14 slowly reset when cavity 19 and cavity 28 are disconnected, cavity 19 and cavity 28 will not be immediately sealed during the disconnection process. The setting of the annular obstruction block 17 can further improve the leakage prevention capability of the external pipe.

[0064] Example 3, based on the above examples:

[0065] Please see Figure 2 ,Figure 3 and Figure 6 In this embodiment, a clamping and stabilizing assembly is also included, which is arranged on the outer threaded connector 3 and comprises:

[0066] The end surface of the fixed plate 7 is provided with a through circular notch, the notch wall is fixedly connected with the outer surface of the cavity chamber 1, the upper end surface of the fixed plate 7 is hingedly connected with the protective frame 1 5, the end of the protective frame 1 5 away from the fixed plate 7 is provided with a semicircular notch, the notch wall is clamped and fixed with the upper end surface of the cavity chamber 2 8, the lower end surface of the fixed plate 7 is hingedly connected with the protective frame 2 6, and the end of the protective frame 2 6 away from the fixed plate 7 is also provided with a semicircular notch, and the notch wall is clamped and fixed with the lower end surface of the cavity chamber 2 8.

[0067] The outer surface of the sliding frame 19 is fixedly connected with the surface of the protective frame 1 5, the inner upper surface of the sliding frame 19 is fixedly connected with the spring 4 18, the upper and lower ends of the spring 4 18 are fixedly connected with the sliding column 21, the surface of the sliding column 21 is slidingly connected with the inner wall of the sliding frame 19, and the lower surface of the sliding column 21 is fixedly connected with the clamping block 30. The surface of the protective frame 2 6 is also fixedly connected with the limiting frame 20, and the inner wall of the limiting frame 20 is slidingly connected with the inner wall of the clamping block 30.

[0068] More specifically, in this embodiment: after the outer threaded connector 3 is connected with the inner threaded protective cap 2, the clamping block 30 moves to the direction of the sliding frame 19, and the spring 4 18 is pressed, then the protective frame 1 5 and the protective frame 2 6 are clamped, and then the clamping block 30 is loosened. The clamping block 30 will be clamped with the limiting frame 20 under the action of the spring 4 18, thereby realizing the fixation of the protective frame 1 5 and the protective frame 2 6.

[0069] The arrangement of the clamping and stabilizing assembly holds the cavity chamber 2 8 through the protective frame 1 5 and the protective frame 2 6, thereby making the outer connector have the following advantages:

[0070] Firstly, the clamping of the protective frame 1 5 and the protective frame 2 6 can further stabilize the connection between the cavity chamber 1 and the cavity chamber 2 8, and cannot be moved, thereby reducing the possibility of liquid leakage.

[0071] Secondly, in order to facilitate installation, the threaded surfaces of the outer threaded connector 3 and the inner threaded protective cap 2 are shallow and easy to rotate and disconnect. The outer threaded connector 3 and the inner threaded protective cap 2 are wrapped by the protective frame 1 5 and the protective frame 2 6 to prevent loosening under the action of external friction during dialysis, thereby causing unstable connection between the cavity chamber 1 and the cavity chamber 2 8.

[0072] Working principle: when the peritoneal dialysis external connector is used, the following steps are taken:

[0073] S1: first connect the three-head hose 4 with the dialysis machine, then connect the outer threaded joint 3 with the inner threaded protective cap 2;

[0074] S2: after connecting the outer threaded joint 3 with the inner threaded protective cap 2, rotate the inner threaded protective cap 2 to further make the cavity chamber one 9 and the cavity chamber two 8 close to each other;

[0075] S3: in the process of making the cavity chamber one 9 and the cavity chamber two 8 close to each other, the flow pipe 13 will make the resistance ball two 14 resist against the inside of the cavity chamber two 8 and make the resistance ball one 12 resist against the inside of the cavity chamber one 9, so as to make the cavity chamber one 9 and the cavity chamber two 8 communicate, and make the annular resistance block 17 tightly adhere to the end face of the cavity chamber one 9;

[0076] S4: then connect the protective frame one 5 with the protective frame two 6, and make the clamping block 30 and the limiting frame 20 firmly connected, so as to dialyze the patient;

[0077] S5: finally, after the dialysis is completed, open the protective frame one 5 and the protective frame two 6 to disconnect the outer threaded joint 3 and the inner threaded protective cap 2, then the cavity chamber one 9 and the cavity chamber two 8 will be closed under the action of the spring one 11 and the spring two 15, that is, the use of the external pipe is completed.

[0078] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A peritoneal dialysis extension tube comprising an internally threaded protective cap (2) and an externally threaded connector (3), characterized in that: The thread surface of the female threaded protective cap (2) is threadedly connected with the thread surface of the male threaded connector (3), and the peritoneal dialysis external pipe further comprises: A dialysis machine end connecting assembly is arranged on the male threaded connector (3) and is used for controlling the opening and closing of the dialysis machine end pipe; A patient end connecting assembly is arranged on the female threaded protective cap (2) and is used for controlling the opening and closing of the patient end pipe; A liquid leakage prevention assembly is arranged on the female threaded protective cap (2) and is used for plugging the connecting port when the dialysis machine end connecting assembly and the patient end connecting assembly are connected; A clamping and stabilizing assembly is arranged on the male threaded connector (3) and is used for fixing the dialysis machine end connecting assembly and the patient end connecting assembly together when they are connected. The dialysis machine end connecting assembly comprises: A cavity chamber I (9) is provided with a through circular through slot at the center of the end surface of the male threaded connector (3), the slot wall of the through slot is fixedly connected with the outer surface of the cavity chamber I (9), the end surface of the cavity chamber I (9) away from one end of the male threaded connector (3) is fixedly connected with a three-way hose (4), a slot I (10) is arranged at one end of the cavity chamber I (9) close to the three-way hose (4), the slot wall end surface of the slot I (10) is fixedly connected with a spring I (11), the other end of the spring I (11) abuts against a flow resistance ball I (12), and the surface of the flow resistance ball I (12) further abuts against a flow-through pipe (13). The dialysis machine end connecting assembly further comprises: A limiting block (22) is fixedly connected with the side surface of the flow-through pipe (13) close to the flow resistance ball I (12), the end of the flow-through pipe (13) close to the flow resistance ball I (12) is further provided with a water flow groove I (24), the midpoint of the outer surface of the flow-through pipe (13) is further fixedly connected with a limiting plate (27), the inner end surface of the cavity chamber I (9) away from one end of the three-way hose (4) is further provided with a limiting groove (23), the slot wall of the limiting groove (23) is slidingly connected with the surface of the limiting block (22), and the end surface of the cavity chamber I (9) provided with the limiting groove (23) is further provided with an outlet groove with the same size as the flow-through pipe (13), and the slot wall of the outlet groove is slidingly connected with the outer surface of the flow-through pipe (13).

2. The external tubing set for peritoneal dialysis according to claim 1, wherein: The patient end connecting assembly comprises: A cavity chamber II (8) is provided with a through circular through slot at the center of the end surface of the female threaded protective cap (2), the slot wall of the through slot is rotationally connected with the outer surface of the cavity chamber II (8), one end of the cavity chamber II (8) away from the cavity chamber I (9) is fixedly connected with a hose (1), and the inner end of the cavity chamber II (8) close to the hose (1) is provided with a slot II (16), the slot wall end surface of the slot II (16) is fixedly connected with a spring II (15), and the other end of the spring II (15) abuts against a flow resistance ball II (14).

3. The peritoneal dialysis extension tube of claim 2, wherein: The patient end connecting assembly further comprises: An inlet groove (28) is formed on the inner end surface of the second cavity (8) away from the hose (1), and the groove wall of the inlet groove (28) has the same diameter as the diameter of the flow pipe (13), the outer surface of the flow pipe (13) can slide on the groove wall of the inlet groove (28), and the end of the flow pipe (13) close to one end of the second cavity (8) is provided with a second water flow groove (26).

4. The peritoneal dialysis extension tube of claim 2, wherein: The liquid leakage prevention assembly comprises: An annular notch (29) is formed on the outer end surface of the second cavity (8) away from the hose (1), and the groove wall end surface of the annular notch (29) is fixedly connected with a spring (25), the other end of the spring (25) is fixedly connected with an annular blocking block (17), and the side surface of the annular blocking block (17) is slidingly connected with the groove wall of the annular notch (29).

5. The peritoneal dialysis extension tube of claim 2, wherein: The clamping and stabilizing assembly comprises: A fixed plate (7) is provided with a circular notch penetrating through the end surface, the groove wall of the notch is fixedly connected with the outer surface of the first cavity (9), the upper end surface of the fixed plate (7) is hingedly connected with a protection frame (5), one end of the protection frame (5) away from the fixed plate (7) is provided with a semicircular notch, the groove wall of the notch is clamped and fixed with the upper end surface of the second cavity (8), the lower end surface of the fixed plate (7) is hingedly connected with a protection frame (6), one end of the protection frame (6) away from the fixed plate (7) is also provided with a semicircular notch, and the groove wall of the notch is clamped and fixed with the lower end surface of the second cavity (8).

6. The peritoneal dialysis extension tube of claim 5, wherein: The clamping and stabilizing assembly further comprises: A sliding frame (19) is fixedly connected with the surface of the protection frame (5), the inner upper surface of the sliding frame (19) is fixedly connected with a spring (18), the upper and lower ends of the spring (18) are fixedly connected with a sliding column (21), the surface of the sliding column (21) is slidingly connected with the inner wall of the sliding frame (19), the lower surface of the sliding column (21) is fixedly connected with a clamping block (30), and the surface of the protection frame (6) is also fixedly connected with a limiting frame (20), the inner wall of the limiting frame (20) is slidingly connected with the inner wall of the clamping block (30).

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