Anti-blocking detachable external short tube for peritoneal dialysis
By designing a detachable peritoneal dialysis external catheter to prevent blockage, and utilizing connection and removal mechanisms, the problem of thrombosis blockage is solved, enabling simple prevention and treatment of blockage and reducing the risk to patients.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANXISHAN HOSPITAL OF GUANGXI ZHUANG AUTONOMOUS REGION
- Filing Date
- 2025-01-25
- Publication Date
- 2026-06-16
AI Technical Summary
Existing peritoneal dialysis devices are prone to blood clots during use, which can lead to blockage of the tubing and increase the risk to the patient's condition. Furthermore, existing double-safety devices have not been able to effectively prevent such blockages.
A detachable peritoneal dialysis external catheter designed to prevent blockage is provided. By setting up a connection mechanism and a disassembly mechanism, including a first connecting tube, a second connecting tube, a connecting conical connector, threads, an installation tube, and a dialysis tube, users can separate and replace the blocked part to prevent thrombosis.
It effectively prevents short tube blockage, reduces the risk of patients' conditions worsening, is simple and convenient to operate, has a simple structural design, and has good practical value.
Smart Images

Figure CN224357839U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of peritoneal dialysis technology, specifically to a detachable, anti-clogging peritoneal dialysis external short tube. Background Technology
[0002] Peritoneal dialysis is a treatment method that uses the patient's own peritoneum as a semipermeable membrane. By injecting dialysate into the peritoneal cavity, the concentration difference of solute and the osmotic pressure difference on both sides of the peritoneum are used to remove waste and excess water from the body. During peritoneal dialysis, dialysate enters the patient's peritoneal cavity through a catheter, exchanges with the blood in the peritoneum, transfers waste and excess water from the blood to the dialysate, and then drains the dialysate containing waste from the body.
[0003] Patent publication number CN114732982A discloses a peritoneal dialysis external short tube with timed and adjustable flow rate, which includes a timed regulating ball valve, a short tube line, a short tube switch, and an iodine solution micro cap interface; the short tube switch is connected between the short tube line and the iodine solution micro cap interface; the short tube switch consists of a short tube switch sleeve and a short tube switch middle section; the timed regulating ball valve is located in the middle section of the short tube switch and is used to adjust the peritoneal dialysis solution flow rate; the timed regulating ball valve includes a timed regulator and a ball valve located in the middle section of the short tube switch; the timed regulator is controlled and connected to the ball valve.
[0004] To address the issue of peritonitis and worsening of the patient's condition due to patient error in forgetting to close the short-tube switch, current technology employs a regulating ball valve as a separate peritoneal dialysis access switch during peritoneal dialysis operations. This adds an extra layer of protection to peritoneal dialysis, overcoming the traditional single-safety switch problem. The timed regulating ball valve and the short-tube switch form a double safety mechanism, increasing the fault tolerance of the PD process. However, the above device still presents a risk: during use, blood may come into contact with the dialysate, causing blood clotting and thrombus formation. These thrombi can detach and enter the short tube, potentially causing blockage and further aggravating the patient's condition. Utility Model Content
[0005] The purpose of this invention is to provide a detachable, anti-clogging peritoneal dialysis external catheter to solve the problems mentioned in the background art.
[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0007] A detachable peritoneal dialysis external catheter with anti-clogging features includes a catheter mechanism, a connecting mechanism at the end of the catheter mechanism, and an installation / removal mechanism at the end of the connecting mechanism.
[0008] The conduit mechanism includes a dedicated connector, on the top of which a conduit is fixedly mounted, and the conduit is connected to the dedicated connector.
[0009] A further improvement of this utility model is that a sealing layer is fixedly installed on the outer wall of the bottom end of the conduit, a sealing tube is provided on the outer wall of the sealing layer, and the bottom surface of the sealing tube is fixedly connected to a special connector.
[0010] A further improvement of the present invention is that the connecting mechanism includes a first connecting pipe, the left end of which is fixedly installed at the top of the conduit, the first connecting pipe is connected to the conduit, and the top surface of the first connecting pipe is provided with anti-slip texture.
[0011] A further improvement of this utility model is that: a second connecting pipe is movably connected to the side of the first connecting pipe, and a connecting tapered connector is fixedly connected to the right side of the second connecting pipe. The connecting tapered connector is connected to the second connecting pipe, and the outer wall of the connecting tapered connector is threaded.
[0012] A further improvement of this utility model is that the installation and disassembly mechanism includes an installation tube and a connecting screw groove. The installation tube is threaded to the outer wall of the connecting tapered connector, and a No. 1 dialysis tube is fixedly installed at the right end of the installation tube.
[0013] A further improvement of this utility model is that: the installation tube is connected to the No. 1 dialysis tube, the end of the No. 1 dialysis tube away from the installation tube is movably connected to the No. 1 installation and removal connector, and the end of the No. 1 installation and removal connector away from the No. 1 dialysis tube is fixedly installed with a screw tube.
[0014] A further improvement of this utility model is that: a rotating nut is provided on the outer wall of the spiral tube, the outer wall of the spiral tube is threadedly connected to the inner wall of the connecting spiral groove, the outer wall of the connecting spiral groove is threadedly connected to the rotating nut, a second installation and removal connector is fixedly installed at the end of the connecting spiral groove, a second dialysis tube is movably connected to the end of the second installation and removal connector away from the connecting spiral groove, and a connector is fixedly installed at the end of the second dialysis tube.
[0015] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:
[0016] 1. This utility model provides a detachable peritoneal dialysis external short tube designed to prevent blockage. It employs a connecting mechanism consisting of a first connecting tube, anti-slip grooves, a second connecting tube, a connecting tapered connector, and threads, and an installation / disassembly mechanism consisting of an installation tube, a first dialysis tube, a first installation / disassembly connector, a rotating nut, a threaded tube, a connecting threaded groove, a second installation / disassembly connector, a second dialysis tube, and a connector. These two mechanisms work together to prevent blockage within the short tube, which could prevent peritoneal dialysis and worsen the patient's condition. In case of thrombosis within the short tube, the user can rotate the installation tube to allow for proper connection. The threaded tapered connector separates and releases thrombus-clogging material from the device. When the short tube is contaminated, rotate the nut counterclockwise to expose the threaded groove. Then, grasp the No. 1 and No. 2 installation / removal connectors and twist them in opposite directions to separate the threaded tube from the threaded groove. Finally, rotate the installation tube to separate the threaded tapered connector from the installation tube, allowing you to remove the short tube. Replace it with a tube of the same type.
[0017] 2. This utility model provides a detachable, anti-clogging peritoneal dialysis external short catheter. By setting up a catheter mechanism consisting of a catheter, a sealing tube, a special connector, and a sealing layer, it can play a role in draining and guiding fluid during peritoneal dialysis. When needed, the special connector can be connected to the dialysate, and then the dialysate enters the patient's peritoneal cavity through the catheter to exchange with the blood in the patient's peritoneum, transferring waste and excess water from the blood to the dialysate, and then draining the dialysate containing waste from the body. The device has a simple structure, is easy to operate, and has good practical value. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0019] Figure 2 This is a cross-sectional schematic diagram of the conduit mechanism structure of this utility model;
[0020] Figure 3 This is a schematic diagram of the conduit mechanism of this utility model;
[0021] Figure 4 This is a schematic diagram of the connection mechanism of this utility model;
[0022] Figure 5 This is a schematic diagram of the installation and dismantling mechanism of this utility model.
[0023] In the diagram: 1. Catheter mechanism; 11. Catheter; 12. Sealing tube; 13. Special connector; 14. Sealing layer; 2. Connection mechanism; 21. Connecting tube No. 1; 22. Anti-slip texture; 23. Connecting tube No. 2; 24. Connecting tapered connector; 25. Thread; 3. Installation and removal mechanism; 31. Installation tube; 32. Dialysis tube No. 1; 33. Installation and removal connector No. 1; 34. Rotating nut; 35. Threaded tube; 36. Connecting threaded groove; 37. Installation and removal connector No. 2; 38. Dialysis tube No. 2; 39. Connector. Detailed Implementation
[0024] The present invention will be further described in detail below with reference to embodiments:
[0025] Example 1
[0026] like Figure 1-5 As shown, this utility model provides a detachable peritoneal dialysis external short tube that is resistant to blockage. It includes a catheter mechanism 1, a connecting mechanism 2 at the end of the catheter mechanism 1, and an installation and removal mechanism 3 at the end of the connecting mechanism 2. The catheter mechanism 1 includes a special connector 13, a catheter 11 is fixedly installed at the top of the special connector 13, the catheter 11 is connected to the special connector 13, a sealing layer 14 is fixedly installed on the outer wall of the bottom end of the catheter 11, a sealing tube 12 is provided on the outer wall of the sealing layer 14, and the bottom surface of the sealing tube 12 is fixedly connected to the special connector 13.
[0027] In this embodiment, by setting up a catheter mechanism 1 consisting of a catheter 11, a sealing tube 12, a special connector 13, and a sealing layer 14, it can play a role in draining fluid during peritoneal dialysis. When needed, the special connector 13 can be connected to the dialysate, and then the dialysate can enter the patient's peritoneal cavity through the catheter 11 to exchange with the blood in the patient's peritoneum, transferring waste and excess water from the blood to the dialysate, and then draining the dialysate containing waste from the body. This device has a simple structure, is easy to operate, and has good practical value.
[0028] Example 2
[0029] like Figure 1-5As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the connecting mechanism 2 includes a first connecting pipe 21, the left end of which is fixedly installed at the top of the conduit 11, and the first connecting pipe 21 is connected to the conduit 11. The top surface of the first connecting pipe 21 has anti-slip texture 22. A second connecting pipe 23 is movably connected to the side of the first connecting pipe 21. A connecting conical connector 24 is fixedly connected to the right side of the second connecting pipe 23, and the connecting conical connector 24 is connected to the second connecting pipe 23. The outer wall of the connecting conical connector 24 is provided with threads 25. The installation and removal mechanism 3 includes an installation pipe 31 and a connecting screw groove 36. The installation pipe 31 is threaded to the outer wall of the connecting conical connector 24. A first dialysis tube 32 is fixedly installed at the right end of the tube 31. The tube 31 is connected to the first dialysis tube 32. A first installation and removal connector 33 is movably connected to the end of the first dialysis tube 32 away from the tube 31. A threaded tube 35 is fixedly installed at the end of the first installation and removal connector 33 away from the first dialysis tube 32. A rotating nut 34 is provided on the outer wall of the threaded tube 35. The outer wall of the threaded tube 35 is threadedly connected to the inner wall of the connecting thread groove 36. The outer wall of the connecting thread groove 36 is threadedly connected to the rotating nut 34. A second installation and removal connector 37 is fixedly installed at the end of the connecting thread groove 36. A second dialysis tube 38 is movably connected to the end of the second installation and removal connector 37 away from the connecting thread groove 36. A connector 39 is fixedly installed at the end of the second dialysis tube 38.
[0030] In this embodiment, by setting up a connecting mechanism 2 consisting of a first connecting tube 21, anti-slip texture 22, a second connecting tube 23, a connecting tapered connector 24, and a thread 25, and an installation and dismantling mechanism 3 consisting of an installation tube 31, a first dialysis tube 32, a first installation and dismantling connector 33, a rotating nut 34, a threaded tube 35, a connecting threaded groove 36, a second installation and dismantling connector 37, a second dialysis tube 38, and a connector 39, the two mechanisms can work together to prevent the short tube from becoming blocked, thus preventing peritoneal dialysis from being impossible and worsening the patient's condition. When it is necessary for a thrombus to form inside the short tube, the user can rotate the installation tube 31 to connect it to the installation tube 31 via the thread 25. The tapered connector 24 separates and releases the thrombus blockage material inside the device. When the short tube is contaminated, the rotating nut 34 can be rotated counterclockwise to expose the connecting screw groove 36 that is threaded to the rotating nut 34. Then, grasp the first installation / removal connector 33 and the second installation / removal connector 37 with both hands and twist them in opposite directions to separate the threaded tube 35 that is threaded to the inner wall of the connecting screw groove 36 from the connecting screw groove 36. Then, rotate the installation tube 31 to separate the tapered connector 24 that is threaded to the installation tube 31 through the thread 25. The short tube can then be removed and replaced with one of the same type.
[0031] The working principle of this anti-clogging, detachable peritoneal dialysis external catheter will be explained in detail below.
[0032] like Figure 1-5 As shown, in use, first connect the special connector 13 to the dialysate, then let the dialysate enter the patient's abdominal cavity through the catheter 11 to exchange with the blood in the patient's peritoneum. Then, when a thrombus forms inside the short tube, the user can rotate the installation tube 31 to separate the connecting conical connector 24, which is threaded to the installation tube 31 via thread 25, and release the thrombus blocking material inside the device. When the short tube is contaminated, rotate the rotating nut 34 to rotate it counterclockwise, thereby revealing the connecting screw groove 36, which is threaded to the rotating nut 34. Then, grasp the first installation / removal connector 33 and the second installation / removal connector 37 with both hands and twist them in opposite directions to separate the threaded tube 35, which is threaded to the inner wall of the connecting screw groove 36, from the connecting screw groove 36. Then rotate the installation tube 31 to separate the connecting conical connector 24, which is threaded to the installation tube 31 via thread 25, and remove the short tube. Then, replace it with the same model.
[0033] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.
Claims
1. A detachable, anti-clogging peritoneal dialysis external catheter, comprising a catheter mechanism (1), characterized in that: The end of the conduit mechanism (1) is provided with a connecting mechanism (2), and the end of the connecting mechanism (2) is provided with an installation and removal mechanism (3). The conduit mechanism (1) includes a dedicated connector (13), and a conduit (11) is fixedly installed at the top of the dedicated connector (13). The conduit (11) is connected to the dedicated connector (13).
2. The anti-clogging, detachable peritoneal dialysis external catheter according to claim 1, characterized in that: A sealing layer (14) is fixedly installed on the outer wall of the bottom end of the conduit (11), and a sealing tube (12) is provided on the outer wall of the sealing layer (14). The bottom surface of the sealing tube (12) is fixedly connected to a special connector (13).
3. The anti-clogging, detachable peritoneal dialysis external catheter according to claim 2, characterized in that: The connecting mechanism (2) includes a first connecting pipe (21), the left end of which is fixedly installed at the top of the conduit (11), the first connecting pipe (21) is connected to the conduit (11), and the top surface of the first connecting pipe (21) is provided with anti-slip texture (22).
4. The anti-clogging, detachable peritoneal dialysis external catheter according to claim 3, characterized in that: The side of the first connecting pipe (21) is movably connected to the second connecting pipe (23), and the right side of the second connecting pipe (23) is fixedly connected to the connecting tapered connector (24). The connecting tapered connector (24) is connected to the second connecting pipe (23), and the outer wall of the connecting tapered connector (24) is provided with threads (25).
5. The anti-clogging, detachable peritoneal dialysis external catheter according to claim 4, characterized in that: The installation and removal mechanism (3) includes an installation tube (31) and a connecting screw groove (36). The installation tube (31) is threaded to the outer wall of the connecting tapered connector (24). A dialysis tube (32) is fixedly installed at the right end of the installation tube (31).
6. The anti-clogging, detachable peritoneal dialysis external catheter according to claim 5, characterized in that: The installation tube (31) is connected to the first dialysis tube (32). The end of the first dialysis tube (32) away from the installation tube (31) is movably connected to the first installation and removal connector (33). The end of the first installation and removal connector (33) away from the first dialysis tube (32) is fixedly installed with a screw tube (35).
7. A detachable, anti-clogging peritoneal dialysis external catheter according to claim 6, characterized in that: The outer wall of the spiral tube (35) is provided with a rotating nut (34). The outer wall of the spiral tube (35) is threadedly connected to the inner wall of the connecting screw groove (36). The outer wall of the connecting screw groove (36) is threadedly connected to the rotating nut (34). A second installation and removal connector (37) is fixedly installed at the end of the connecting screw groove (36). A second dialysis tube (38) is movably connected to the end of the second installation and removal connector (37) away from the connecting screw groove (36). A connector (39) is fixedly installed at the end of the second dialysis tube (38).