Drainage device and blood purification device

Abstract

The utility model discloses a drainage device and blood purification device, including connecting component and drainage component, the liquid flow channel is equipped with in the connecting component along the axial direction, the rotatable drainage component is equipped with in one side of connecting component and seals, the sampling channel is equipped with in the drainage component along the axial direction, is equipped with the communication hole on the lateral wall, and the communication hole is communicated or dislocation disconnect with the liquid flow channel through the rotation drainage component, to realize the communication or disconnect between sampling channel and liquid flow channel. The utility model discloses a drainage device is through the through connector and is connected with the liquid pipeline of blood purification device, realizes the pipeline pressure measurement, pipeline debugging and pipeline liquid sampling without pulling silica gel pipe, and further avoids the risk such as pipeline pollution, pipeline burst pipe, and its simple structure, safe, the practicality is strong.

Description

Technical Field

[0001] This utility model relates to the field of blood purification equipment technology, specifically a drainage device and a blood purification device. Background Technology

[0002] In the medical field, blood purification technology is a key means of treating diseases such as acute and chronic renal failure and multiple organ dysfunction syndrome. The stability and safety of its core equipment, the dialysis machine, directly affect the patient's treatment outcome and health. During operation, the dialysis machine needs to achieve precise delivery and circulation of dialysate and blood through a fluid piping system. The pressure stability and fluid cleanliness of the fluid piping system are core indicators for ensuring treatment safety. Therefore, after the fluid piping of the dialysis equipment is assembled, it is necessary to regularly perform pipeline pressure testing, hydraulic detector calibration, and fluid sampling to ensure that the fluid piping system is leak-free, pressure parameters meet clinical standards, and to check for contamination or abnormal composition of the fluid.

[0003] However, the existing dialysis equipment's fluid circuit system design has significant flaws, leading to numerous challenges in the aforementioned critical testing operations. Currently, pressure testing, hydraulic detector debugging, and fluid sampling all require disassembly of the assembled fluid circuit after the equipment has been shut down. This operational mode has caused two major problems in practice: First, the fluid circuit tubing is mostly made of silicone. Although silicone tubing has good biocompatibility and flexibility, after repeated insertion and removal, the tubing diameter is prone to irreversible deformation, resulting in a significant decrease in the clamping force between the silicone tubing and the connector, and impaired sealing performance. When the equipment is restarted, the pressure can easily cause the tubing to burst, not only interrupting the treatment process but also potentially causing cross-infection risks due to fluid leakage. Second, during the insertion and removal of the tubing, the inner wall of the tubing is directly exposed to the air environment. Dust, microorganisms, or contaminants encountered during the operation can easily adhere to the inner wall of the tubing. After reassembly, these contaminants enter the patient's body with the fluid, seriously threatening the patient's health, especially for dialysis patients with weakened immune systems, potentially inducing serious infectious complications.

[0004] To address the liquid sampling problem, existing technologies have introduced improved solutions. These solutions utilize a dialysate extraction component and a detachable cap, employing inlet, outlet, and sampling ports on the component to achieve liquid sampling, thus simplifying the sampling operation to some extent. However, significant shortcomings remain: Firstly, the liquid flow path is designed with a right-angle structure, which easily generates eddies and pressure losses when the liquid flows through the right-angle channel, leading to deviations in pressure detection results and failing to accurately reflect the actual pressure state of the liquid circuit system, thus affecting the accuracy of debugging. Secondly, the device includes multiple components such as the extraction component and the cap, resulting in a complex assembly process. This not only increases manufacturing costs but also reduces assembly efficiency, and the connection of multiple components also increases the risk of seal failure.

[0005] In summary, existing testing and operation modes and related improvement schemes for dialysis equipment fluid circuit systems cannot simultaneously guarantee operational convenience and testing accuracy while avoiding the risks of tubing damage and contamination. Therefore, developing a drainage device that can achieve pressure measurement, debugging, and sampling without disassembling the tubing, and which is simple in structure and provides stable pressure, has become a critical issue that urgently needs to be addressed in the field of blood purification equipment technology. Utility Model Content

[0006] The purpose of this invention is to address the aforementioned shortcomings by providing a drainage device and a blood purification device, solving the problem of repeated insertion and removal of the fluid pipeline during pressure testing, pipeline debugging, and fluid sampling in existing technologies. This eliminates the need to remove the silicone tubing, avoiding risks such as pipeline contamination and pipe bursts. To achieve the above objective, this invention provides the following technical solution: A drainage device includes a connecting component and a drainage component; the connecting component has an axially oriented liquid flow channel; a rotatable drainage component is sealed on one side of the connecting component; the drainage component has an axially oriented sampling channel and a connecting hole on its side wall; by rotating the drainage component, the connecting hole can be connected to or disconnected from the liquid flow channel, thereby achieving connection or disconnection between the sampling channel and the liquid flow channel.

[0007] Furthermore, the connecting component has an installation part on one side; the installation part has an installation channel that partially intersects with the liquid flow channel; the side wall of the liquid flow channel has a circular hole that connects the liquid flow channel and the installation channel; the drainage component is rotatably and sealed within the installation channel; the connecting hole is located within the installation channel, and during the rotation of the drainage component, the connecting hole can be completely disconnected from the circular hole or at least partially connected to the circular hole.

[0008] Furthermore, the distance between the axis of the installation channel and the axis of the liquid flow channel is the radius of the installation channel plus the radius of the liquid flow channel minus Z, where Z is 0.1mm to 0.8mm.

[0009] Furthermore, the area of ​​the connecting hole is 1 / 6 to 1 / 2 of the area of ​​the circular hole.

[0010] Furthermore, one end of the sampling channel is a sealed end; the distance between the connecting hole and the sealed end is greater than or equal to 2mm.

[0011] Furthermore, the upper end of the drainage component is provided with a pagoda connector.

[0012] Furthermore, the drainage component is provided with a handle; the handle is located above the installation channel.

[0013] Furthermore, the drainage component is provided with a first marker; the outer side walls of the top and bottom of the connecting component are each provided with a second marker indicating the direction of liquid flow; the first marker and the second marker work together to determine whether the sampling channel and the liquid flow channel are connected or disconnected.

[0014] Furthermore, the handle is a straight-line structure with one pointed end, perpendicular to the drainage component, and also serves as the first marker.

[0015] A blood purification device includes a straight connector and the aforementioned drainage device; the straight connector has an axially arranged connecting channel and pagoda connectors at both ends; the connecting component of the drainage device is connected to the liquid pipeline of the blood purification device through the straight connector.

[0016] The beneficial effects of this utility model are: This utility model discloses a drainage device and a blood purification device, including a connecting component and a drainage component. The connecting component has an axially oriented liquid flow channel. A rotatable drainage component is sealed on one side of the connecting component. The drainage component has an axially oriented sampling channel and a connecting hole on its side wall. By rotating the drainage component, the connecting hole can be connected to or disconnected from the liquid flow channel, thus achieving the connection / disconnection between the sampling channel and the liquid flow channel. This drainage device is then connected to the liquid pipeline of the blood purification device via a straight connector, enabling pipeline pressure testing, pipeline adjustment, and pipeline liquid sampling without removing the silicone tubing. This avoids risks such as pipeline contamination and pipeline bursting. Its structure is simple, safe, and highly practical. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the connecting component of this utility model; Figure 2 This is a cross-sectional schematic diagram of the connecting component of this utility model; Figure 3 This is a three-dimensional structural schematic diagram of the drainage component of this utility model; Figure 4 This is a cross-sectional schematic diagram of the drainage component of this utility model; Figure 5 This is a three-dimensional structural schematic diagram of the straight connector of this utility model; Figure 6 This is a cross-sectional schematic diagram of the straight connector of this utility model; Figure 7 This is a top view of the drainage device and straight connector of this utility model assembled together.

[0018] In the attached diagram: 1-connecting component, 2-draining component, 3-liquid flow channel, 4-sampling channel, 5-connecting hole, 6-mounting part, 7-mounting channel, 8-round hole, 9-sealing end, 10-pagoda connector, 11-first marker, 12-second marker, 13-handle, 14-straight connector, 15-connecting channel. Detailed Implementation

[0019] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0020] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also mean including the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0021] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0022] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. The meaning of such spatial relative terms includes different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, then an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0023] In at least one embodiment, see Appendix Figures 1-4 This utility model discloses a drainage device, including a connecting component 1 and a drainage component 2. The connecting component 1 is used to connect to a liquid pipeline or other components in a blood purification device. A liquid flow channel 3 is provided inside the connecting component 1 along its length direction. The liquid flow channel 3 is mainly used for liquid flow in the blood purification device. An installation part 6 is provided on one side of the connecting component 1. An installation channel 7 is provided inside the installation part 6. The installation channel 7 partially intersects with the liquid flow channel 3. A circular hole 8 communicating with the installation channel 7 is provided on the side wall of the liquid flow channel 3, as shown in the attached figure. Figure 1 and attached Figure 2 As shown, the direction of the installation channel 7 is perpendicular to the direction of the liquid flow channel 3, which minimizes the impact and interference on the liquid flow within the liquid flow channel 3. One end of the drainage component 2 is sealed and rotatably mounted within the installation channel 7. A sampling channel 4 is provided within the drainage component 2 along its length, as shown in the attached diagram. Figure 3 and attached Figure 4As shown, the side wall of the drainage component 2 is provided with a connecting hole 5 that communicates with the sampling channel 4. The connecting hole 5 is located inside the installation channel 7 and corresponds to the circular hole 8. By rotating the drainage component 2, the connecting hole 5 is connected to the circular hole 8, thereby connecting the sampling channel 4 with the liquid flow channel 3. The liquid in the liquid flow channel 3 flows out from the sampling channel 4 for pipeline pressure testing, pipeline debugging, and pipeline liquid sampling. Then, by rotating the drainage component 2, the connecting hole 5 and the circular hole 8 are misaligned, thereby disconnecting the sampling channel 4 from the liquid flow channel 3. At the other end of the drainage component 2, there is a pagoda connector 10, which is compatible with silicone tubes with inner diameters of Φ5 mm and Φ6 mm. When the sampling channel 4 is connected to the liquid flow channel 3, it is convenient to connect to pressure testing devices, liquid sampling devices, etc., for pipeline pressure testing, pipeline debugging, and pipeline liquid sampling. The connecting component 1 is made of silicone, which has a certain degree of toughness. By selecting a suitable drainage component 2, the mounting part 6 of the connecting component 1 can tightly wrap around the portion of the drainage component 2 located in the installation channel 7, ensuring the seal between the sampling channel 4 and the liquid flow channel 3. This drainage device allows for pipeline pressure testing, pipeline debugging, and pipeline liquid sampling without removing the silicone tube, thereby avoiding risks such as pipeline contamination and pipeline bursts. It features a simple structure, safety, and strong practicality.

[0024] Specifically, the inner diameter of the installation channel 7 is 2X mm, the inner diameter of the liquid flow channel 3 is 2Y mm, and the distance between the axis of the installation channel 7 and the axis of the liquid flow channel 3 is X+Y-Z mm, where Z is 0.1-0.8, to ensure that a through circular hole 8 is formed at the intersection of the installation channel 7 and the liquid flow channel 3, and at the same time to ensure the sealing of the connecting component 1 inside the installation channel 7.

[0025] Specifically, one end of the sampling channel 4 is a sealed end 9, and the distance between the connecting hole 5 and the sealed end 9 should be greater than or equal to 2mm. This can prevent contaminants from entering the liquid flow channel 3 from the sampling channel 4.

[0026] Specifically, the area of ​​the connecting hole 5 is 1 / 6 to 1 / 2 of the area of ​​the circular hole 8. If the area of ​​the connecting hole 5 is too small, it will lead to processing difficulties and increase costs; if the area of ​​the connecting hole 5 is too large, it will easily lead to the sealing performance not meeting the usage requirements.

[0027] In at least one embodiment, a first marker 11 is provided on the drainage component 2. The first marker 11 can be an arrow shape, and it rotates with the drainage component 2. A second marker 12 corresponding to the first marker 11 is provided on the outer side walls of the top and bottom of the connecting component 1. The second marker 12 can also be an arrow shape, indicating the direction of liquid flow. The first marker 11 and the second marker 12 can be used together to determine whether the sampling channel 4 is connected or disconnected from the liquid flow channel 3. When the first marker 11 and the second marker 12 form a fixed angle, the sampling channel 4 is connected to the liquid flow channel 3; when the first marker 11 and the second marker 12 form an angle other than the fixed angle, the sampling channel 4 is disconnected from the liquid flow channel 3.

[0028] Specifically, a handle 13 is provided on the drainage component 2, located above the installation channel 7, facilitating rotation of the drainage component 2 by the user. The first marker 11 can be placed on the handle 13, or the handle 13 can be a straight structure with one pointed end, perpendicular to the drainage component 2, serving as both the first marker 11 and the second marker 12. For example, when the handle 13 is parallel to the second marker 12, and the pointed end aligns with the direction indicated by the second marker 12, the angle between the first marker 11 and the second marker 12 is 0 degrees. At this time, the connecting hole 5 is connected to the round hole 8, and the sampling channel 4 is connected to the liquid flow channel 3. Rotating the handle 13 again causes the first marker 11 and the second marker 12 to no longer be parallel, forming a certain angle. The sampling channel 4 is then disconnected from the liquid flow channel 3. Continue rotating until the angle between the first marker 11 and the second marker 12 is 180 degrees, at which point the connecting hole 5 is rotated to the back.

[0029] In at least one embodiment, see Appendix Figures 5-7 This utility model discloses a blood purification device, including a straight connector 14 and a drainage device as described in Embodiment 1 or Embodiment 2. A connecting channel 15 is provided inside the straight connector 14 along its length, and pagoda connectors 10 are provided at both ends of the straight connector 14, as shown in the attached figure. Figure 5 and attached Figure 6 As shown, the preferred diameter is Φ8.1mm. This size allows for a closer fit with the silicone sleeve and silicone tube, effectively preventing fluid residue buildup inside the tube while ensuring comfortable assembly and a tight seal. The connecting component 1 in the drainage device can be connected to the liquid pipeline of the blood purification device via a straight connector 14. Figure 7This is a schematic diagram of the drainage device assembled with the straight connector 14, or directly connected to other components, such as pressure sensors and water temperature sensors. Other structures of the blood purification device are already known to those skilled in the art and are therefore not described in detail here.

[0030] All technical features in this embodiment can be freely combined according to actual needs. The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model. Technologies, shapes, and structural parts not described in detail in this utility model are all known technologies.

[0031] The above embodiments are preferred implementations of this utility model. In addition, other implementations are also included. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A drainage device, characterized in that: It includes a connecting component (1) and a drainage component (2); the connecting component (1) has a liquid flow channel (3) arranged along the axial direction; a rotatable drainage component (2) is sealed on one side of the connecting component (1); the drainage component (2) has a sampling channel (4) arranged along the axial direction and a connecting hole (5) on its side wall. By rotating the drainage component (2), the connecting hole (5) is connected to or disconnected from the liquid flow channel (3) to achieve the connection or disconnection between the sampling channel (4) and the liquid flow channel (3).

2. The drainage device according to claim 1, characterized in that: The connecting component (1) has an installation part (6) on one side; the installation part (6) has an installation channel (7) that partially intersects with the liquid flow channel (3); the side wall of the liquid flow channel (3) has a round hole (8) that connects the liquid flow channel (3) and the installation channel (7); the drainage component (2) is rotatably and sealed in the installation channel (7); the connecting hole (5) is located in the installation channel (7), and during the rotation of the drainage component (2), the connecting hole (5) can be completely disconnected from the round hole (8) or at least partially connected to the round hole (8).

3. The drainage device according to claim 2, characterized in that: The distance between the axis of the installation channel (7) and the axis of the liquid flow channel (3) is the radius of the installation channel (7) plus the radius of the liquid flow channel (3) minus Z, where Z is 0.1mm to 0.8mm.

4. A drainage device according to claim 2 or 3, characterized in that: The area of ​​the connecting hole (5) is 1 / 6 to 1 / 2 of the area of ​​the circular hole (8).

5. A drainage device according to claim 4, characterized in that: One end of the sampling channel (4) is a sealed end (9); the distance between the connecting hole (5) and the sealed end (9) is greater than or equal to 2 mm.

6. A drainage device according to any one of claims 1-3 or 5, characterized in that: The upper end of the drainage component (2) is provided with a pagoda connector (10).

7. A drainage device according to any one of claims 2, 3 or 5, characterized in that: The drainage component (2) is provided with a handle (13); the handle (13) is located above the installation channel (7).

8. A drainage device according to claim 7, characterized in that: The drainage component (2) is provided with a first marker (11); the outer side walls of the top and bottom of the connecting component (1) are provided with a second marker (12) indicating the direction of liquid flow; the first marker (11) and the second marker (12) are used together to determine whether the sampling channel (4) and the liquid flow channel (3) are connected or disconnected.

9. A drainage device according to claim 8, characterized in that: The handle (13) is a straight structure with a pointed end, perpendicular to the drainage component (2), and also serves as the first marker (11).

10. A blood purification device, characterized in that: It includes a straight connector (14) and a drainage device as described in any one of claims 1 to 9; the straight connector (14) has a connecting channel (15) along the axial direction and pagoda connectors (10) at both ends; the connecting component (1) of the drainage device is connected to the liquid pipeline of the blood purification device through the straight connector (14).

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