Drain pipe connecting structure of hemodialysis machine
Patent Information
- Application Number
- CN202521067974.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-28
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-05-28
AI Technical Summary
Existing hemodialysis machines are prone to leakage and unstable connections during wastewater collection, leading to operational inconvenience.
It adopts a combination structure of connecting female and connecting plug, including the design of pressure cap, base, plug and press buckle, to ensure the stability and sealing of the connection and prevent leakage.
This improved the connection stability between the drain pipe and the collection bag, preventing leakage and accidental detachment, and enhancing the ease of operation for medical staff.
Smart Images

Figure CN224925478U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical equipment technology, specifically to a drain pipe connection structure for a hemodialysis machine. Background Technology
[0002] Hemodialysis is one of the renal replacement therapies for patients with acute and chronic renal failure. It replaces part of the kidney's function, removing excess water and metabolic waste products from the body, and maintaining electrolyte and acid-base balance. After hemodialysis, metabolic waste products and water from the blood enter the dialysate. The treated dialysis waste fluid needs to be collected and subsequently processed.
[0003] Currently, hemodialysis machines in clinical practice generate a large amount of wastewater. This wastewater is typically collected using collection bags. Traditional collection bags, where the drain pipe is directly inserted, lack a safe and stable connection structure, making them prone to detachment and leakage during use. Leakage also occurs when replacing the collection bag, causing inconvenience for medical staff. Therefore, this paper proposes a new drain pipe connection structure for hemodialysis machines. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this utility model provides a drain pipe connection structure for hemodialysis machines, solving the problems of leakage and unstable connection during wastewater collection from existing hemodialysis machines. This utility model utilizes a connecting female and a connecting plug to form a drain pipe connection structure, facilitating the collection of wastewater from hemodialysis machines, improving the connection stability between the drain pipe and the collection bag, preventing accidental detachment and leakage during collection, and enhancing the ease of operation for medical personnel.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: a drain pipe connection structure for a hemodialysis machine, comprising a female connector and a plug. The female connector includes a pressure cap, a base, and a plug. The upper surface of the base is provided with a detachable pressure cap, the center of which has a through hole. The interior of the base has a insertion hole, and the interior of the insertion hole has a slidably connected plug. A pressure spring is provided at the bottom of the plug and the insertion hole. The side wall of the base has a drain hole communicating with the insertion hole. The plug includes a connecting end and a connecting tail cap. The front end of the connecting end has an inclinedly distributed water outlet, and the tail end of the connecting end has a connecting tail tube. The connecting tail cap is fitted onto the tail of the connecting end and threadedly connected to the connecting end.
[0008] As an improvement to the above technical solution, the inner wall of the through hole is provided with a threaded groove, and a sealing gasket is fixedly connected to the lower surface of the pressure cap.
[0009] As an improvement to the above technical solution, a positioning post is provided at the connection between the plug and the pressure spring, and a conical sealing surface is provided on the surface of the plug.
[0010] As an improvement to the above technical solution, the side wall of the connecting tail tube is provided with a press buckle, and the end of the press buckle is provided with a buckle head.
[0011] As an improvement to the above technical solution, the inner wall of the insertion hole is provided with a fastening groove, and the buckle is fastened to the fastening groove.
[0012] As an improvement to the above technical solution, the side wall of the connector is provided with an annular groove, and the surface of the annular groove is provided with a sealing ring.
[0013] (III) Beneficial Effects
[0014] This utility model provides a drain pipe connection structure for a hemodialysis machine. It has the following beneficial effects:
[0015] 1. This utility model utilizes a connecting female and a connecting plug to form a drain pipe connection structure, which facilitates the collection of waste liquid discharged from the hemodialysis machine, improves the connection stability between the drain pipe and the collection bag, avoids accidental detachment and leakage during the collection process, and improves the convenience of operation for medical staff.
[0016] 2. This utility model has a sliding plug inside the connector to facilitate normal drainage when the connector plug is inserted, and to automatically seal after the connector plug is pulled out to prevent leakage during operation. The push-button buckle on the side wall of the connector cap increases the strength of the connection between the connector plug and the connector, preventing accidental detachment. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the separate components of the drain pipe connection structure of the hemodialysis machine of this utility model;
[0018] Figure 2 This is a side view of the drain pipe connection structure of the hemodialysis machine of this utility model;
[0019] Figure 3 This is a structural schematic diagram of the cross-section of the connecting female seat of this utility model.
[0020] In the diagram: Connecting female socket-1, Connecting plug-2, Pressure cap-3, Base-4, Plug-5, Through hole-6, Insertion hole-7, Pressure spring-8, Drain hole-9, Connecting end-10, Connecting tail cap-11, Outlet-12, Connecting tail pipe-13, Threaded groove-14, Sealing gasket-15, Positioning pin-16, Conical sealing surface-17, Press buckle-18, Buckle-19, Snap groove-20, Annular groove-21, Sealing ring-22. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Please see Figure 1-3 This utility model provides a technical solution: a drain pipe connection structure for a hemodialysis machine, including a connecting female seat 1 and a connecting plug 2. The connecting female seat 1 includes a pressure cap 3, a base 4, and a plug 5. The upper surface of the base 4 is provided with a detachable pressure cap 3. The pressure cap 3 has a through hole 6 in its center. The base 4 has an insertion hole 7 inside. The insertion hole 7 has a slidably connected plug 5 inside. The plug 5 and the bottom of the insertion hole 7 are provided with a pressure spring 8. The side wall of the base 4 has a drain hole 9 communicating with the insertion hole 7. The connecting plug 2 includes a connecting end 10 and a connecting tail cap 11. The front end of the connecting end 10 has an inclinedly distributed water outlet 12. The tail end of the connecting end 10 has a connecting tail tube 13. The connecting tail cap 11 is sleeved on the tail of the connecting end 10 and threadedly connected to the connecting end 10.
[0023] Further improvements include a threaded groove 14 on the inner wall of the through hole 6 and a sealing gasket 15 fixedly connected to the lower surface of the pressure cap 3. The threaded groove 14 on the inner wall of the through hole 6 facilitates disassembly and assembly with the base 4, and the sealing gasket 15 on the lower surface of the pressure cap 3 improves the sealing performance between the connecting female seat 1 and the collection bag, preventing leakage.
[0024] Further improvements include a positioning post 16 at the connection between the plug 5 and the pressure spring 8, and a conical sealing surface 17 on the surface of the plug 5. By providing the positioning post 16 at the connection between the plug 5 and the pressure spring 8, the stability of the connection between the pressure spring 8 and the plug 5 is improved. By providing the conical sealing surface 17 on the surface of the plug 5, the sealing performance of the connection between the plug 5 and the drain hole 9 is improved.
[0025] In a further improvement, the side wall of the connecting tail tube 13 is provided with a pressing buckle 18, and the end of the pressing buckle 18 is provided with a buckle 19. By providing a pressing buckle 18 on the side wall of the connecting tail tube 13, and cooperating with the buckle 19 for end fixing connection, the stability of the connection between the connecting female seat 1 and the connecting plug 2 is improved, and disassembly is also facilitated.
[0026] In a further improvement, the inner wall of the plug hole 7 is provided with a fastening groove 20, and the buckle 19 is fastened to the fastening groove 20. By providing a fastening groove 20 on the inner wall of the plug hole 7, the connection plug 2 and the connection female 1 are prevented from accidentally falling off during use, thereby improving the stability of use.
[0027] Specifically, the side wall of the connector 2 is provided with an annular groove 21, and the surface of the annular groove 21 is provided with a sealing ring 22. By providing a sealing ring 22 on the side wall of the connector 2, the sealing performance at the connection between the connector 2 and the connector 1 is improved, and leakage is avoided during the collection of waste liquid.
[0028] In use, the tail end of the drain pipe is inserted into the connecting tail pipe 13 of the connecting end 10, and then the connecting tail cap 11 is connected to the connecting end 10. The collection bag with the connecting female seat 1 is taken out, and the connecting plug 2 is connected to the connecting female seat 1. The front end of the connecting end 10 is inserted into the drain hole 9, and the plug 5 is squeezed inward. The waste liquid discharged from the hemodialysis machine flows into the collection bag through the drain hole 9 on the side wall of the connecting female seat 1. At the same time, the pressing buckle 18 on the side wall of the connecting tail cap 11 is fastened to the connecting female seat 1 to ensure the stability of the connection between the connecting plug 2 and the connecting female seat 1. When changing the collection bag, the drain pipe is squeezed to block the drainage. The pressing buckle 18 is manually squeezed and pulled outward. The plug 5 automatically seals the drain hole 9 under the action of the pressure spring 8 to prevent leakage and facilitate the replacement of the collection bag.
[0029] This invention addresses the problem that hemodialysis machines generate large amounts of wastewater during clinical use. This wastewater is typically collected using collection bags. Traditional collection bags involve directly inserting the drain pipe, lacking a safe and stable connection structure, making them prone to detachment and leakage during use. Leakage also occurs when changing collection bags, causing inconvenience for medical staff. This invention utilizes a connecting female base 1 and a connecting plug 2 to form a drain pipe connection structure, facilitating the collection of wastewater from the hemodialysis machine. This improves the connection stability between the drain pipe and the collection bag, preventing accidental detachment and leakage during collection, and enhancing the ease of operation for medical staff. A sliding plug 5 inside the connecting female base 1 facilitates normal drainage when the connecting plug 2 is inserted and automatically seals after the connecting plug 2 is removed, preventing leakage during operation. A pressing buckle 18 on the side wall of the connecting cap 11 strengthens the connection between the connecting plug 2 and the connecting female base 1, preventing accidental detachment.
[0030] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0031] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.
[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0033] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A drain pipe connection structure for a hemodialysis machine, comprising a connecting female (1) and a connecting plug (2), characterized in that: The connecting female (1) includes a pressure cap (3), a base (4) and a plug (5). The upper surface of the base (4) is provided with a detachable pressure cap (3). The pressure cap (3) has a through hole (6) in the center. The base (4) has a plug hole (7) inside. The plug hole (7) has a slidably connected plug (5) inside. The plug (5) and the bottom of the plug hole (7) are provided with a pressure spring (8). The side wall of the base (4) has a drain hole (9) that communicates with the plug hole (7). The connecting plug (2) includes a connecting end (10) and a connecting tail cap (11). The front end of the connecting end (10) is provided with an inclined water outlet (12). The tail end of the connecting end (10) is provided with a connecting tail pipe (13). The connecting tail cap (11) is sleeved on the tail of the connecting end (10) and threadedly connected to the connecting end (10).
2. The drain pipe connection structure for a hemodialysis machine according to claim 1, characterized in that: The inner wall of the through hole (6) is provided with a threaded groove (14), and a sealing gasket (15) is fixedly connected to the lower surface of the pressure cap (3).
3. The drain pipe connection structure for a hemodialysis machine according to claim 1, characterized in that: A positioning post (16) is provided at the connection between the plug (5) and the pressure spring (8), and a conical sealing surface (17) is provided on the surface of the plug (5).
4. The drain pipe connection structure for a hemodialysis machine according to claim 1, characterized in that: The side wall of the connecting tail tube (13) is provided with a press buckle (18), and the end of the press buckle (18) is provided with a buckle (19).
5. The drain pipe connection structure for a hemodialysis machine according to claim 4, characterized in that: The inner wall of the insertion hole (7) is provided with a fastening groove (20), and the buckle (19) is fastened to the fastening groove (20).
6. The drain pipe connection structure for a hemodialysis machine according to claim 1, characterized in that: The side wall of the connector (2) is provided with an annular groove (21), and the surface of the annular groove (21) is provided with a sealing ring (22).
