Filtering three-way structure of infusion apparatus

Abstract

The utility model discloses a filtering three-way structure of an infusion apparatus. A three-way main body comprises a straight pipe section and a side pipe section which are communicated with each other; a communication port communicated with the bypass pipe section is formed in the straight pipe section; the filtering assembly comprises a filtering main body, a first filtering sheet and a second filtering sheet; the filtering main body is provided with a main flow channel and a branch flow channel which extends from the outer wall and is communicated with the main flow channel; a first slot for cutting off the main flow channel and a second slot for cutting off the branch flow channel are formed in the filtering main body; the first filter sheet is in insertion fit with the first slot; the second filter sheet is matched with the second slot in an inserting manner; the filter main body is provided with an assembly position which is inserted into the first end of the straight pipe section along the axial direction; and at the assembly position, the outer wall of the filter main body is in sealing fit with the inner wall of the straight pipe section, and the branch flow channels are communicated with the communication ports. According to the tee joint, the filter pieces in the two channels of the tee joint body can be disassembled, assembled and replaced at the same time, disassembly and assembly of the filter pieces are convenient, time and labor are saved, actual application requirements are effectively met, and practicability is high.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a filter three-way structure for an infusion set. Background Technology

[0002] In medical intravenous infusion, it is often necessary to filter the medication to prevent impurities from entering the body. Three-way valves are also widely used in infusion operations, facilitating the connection of multiple medications or related procedures during the infusion process. Current three-way valves typically have two inlet channels and one outlet channel, requiring filters to be installed in at least two inlet channels to filter the incoming medication. After a certain period of use, these filters need to be disassembled and replaced. Currently, the filters in both locations need to be disassembled and replaced separately, a cumbersome, time-consuming, and labor-intensive process that fails to meet practical application requirements. Utility Model Content

[0003] To address the aforementioned technical problems, the purpose of this utility model is to propose a three-way filter structure for an infusion set, which enables simultaneous disassembly and replacement of filter elements in two channels of the three-way main body. The filter elements are easy to disassemble and assemble, saving time and effort, effectively meeting practical application needs, and is highly practical.

[0004] The technical solution of this utility model is implemented as follows: a filter three-way structure for an infusion set, including a three-way body and a filter component;

[0005] The tee body includes a straight pipe section and a bypass pipe section that are interconnected; the straight pipe section has a connection port that communicates with the bypass pipe section;

[0006] The filter assembly includes a filter body, a first filter element, and a second filter element;

[0007] The filter body is provided with a main flow channel extending axially and a branch flow channel extending from the outer wall and communicating with the main flow channel; the filter body is provided with a first slot extending from the outer wall and cutting off the main flow channel, and a second slot extending from the outer wall and cutting off the branch flow channel; the first filter sheet is inserted into the first slot; the second filter sheet is inserted into the second slot.

[0008] The filter body has an assembly position that is axially inserted into the first end of the straight pipe section; in the assembly position, the outer wall of the filter body is sealed to the inner wall of the straight pipe section, and the branch flow channel is connected to the communication port.

[0009] Furthermore, the extension direction of the first slot is perpendicular to the central axis of the filter body; the branch channel extends radially along the filter body; and the extension direction of the second slot is perpendicular to the extension direction of the branch channel.

[0010] Furthermore, the outer wall of the filter body is provided with a threaded section that is connected to the straight pipe section in a threaded seal; the threaded section has a threaded portion distributed on the outside of the second slot.

[0011] Furthermore, in the assembled position, the first filter element is close to the second end of the straight pipe section, and the second filter element is away from the second end of the straight pipe section.

[0012] Furthermore, the filter tee structure includes a first pipe connector; the first pipe connector is threadedly connected to the filter body and communicates with one end of the main channel.

[0013] Furthermore, the filter tee structure includes a second pipe connector; the second pipe connector is threadedly connected to the end of the bypass pipe section away from the connection port and the second end of the straight pipe section.

[0014] Furthermore, a first frame is provided around the outer periphery of the first filter; the first frame is tightly inserted into the first slot; a first arc-shaped surface is provided on the outer edge of the first frame facing the first slot; in the assembly position, the first arc-shaped surface is in clearance fit with the inner wall of the straight pipe section.

[0015] Furthermore, a second frame is provided around the outer periphery of the second filter; the second frame is tightly inserted into the second slot; a second arc-shaped surface is provided on the outer edge of the second frame facing the second slot; in the assembly position, the second arc-shaped surface is in clearance fit with the inner wall of the straight pipe section.

[0016] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0017] 1. This utility model utilizes a filter assembly, with a first filter and a second filter simultaneously mounted on the filter body. When the filter body is in the assembled position, the first filter filters the liquid medicine in the straight pipe section, and the second filter filters the liquid medicine in the bypass pipe section. By disassembling the filter body from the straight pipe section, the first and second filter can be simultaneously removed and replaced. This combination allows for the simultaneous disassembly and replacement of filter elements in both channels of the three-way body, making filter element installation and removal convenient, time-saving, and labor-saving, effectively meeting practical application needs and demonstrating strong practicality.

[0018] 2. In this utility model, the first filter element and the second filter element are respectively assembled onto the filter body by insertion, so as to realize quick assembly and disassembly of the first filter element and the second filter element. Moreover, when the filter body is in the assembly position, the first filter element and the second filter element can be confined in the first slot and the second slot through the inner wall of the straight pipe section, so that the assembly of the first filter element and the second filter element is stable and reliable, and has strong practicality. Attached Figure Description

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0020] Figure 1 This is a three-dimensional structural diagram of the overall structure of this utility model;

[0021] Figure 2 for Figure 1 A sectional view of the structure;

[0022] Figure 3 for Figure 1 Exploded view;

[0023] Figure 4 This is a three-dimensional structural diagram of the filter body of this utility model;

[0024] Figure 5 for Figure 4 A sectional view of the structure;

[0025] Figure 6 This is a three-dimensional structural diagram of the three-way body of this utility model;

[0026] Figure 7 This is a three-dimensional structural diagram of the first filter element of this utility model;

[0027] Figure 8 This is a three-dimensional structural diagram of the second filter element of this utility model;

[0028] The components are: 1. T-junction body; 11. Straight pipe section; 12. Bypass pipe section; 2. Filter body; 21. Main flow channel; 22. Branch flow channel; 23. First slot; 24. Second slot; 3. First filter element; 31. First frame; 311. First arc-shaped surface; 4. Second filter element; 41. Second frame; 411. Second arc-shaped surface; 5. First pipe connector; 6. Second pipe connector. Detailed Implementation

[0029] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0030] like Figure 1-8The diagram shows a filter tee structure for an infusion set according to this embodiment, which is applied to the infusion tubing of the infusion set. The filter tee structure includes a tee body 1, a filter assembly, a first connector 5, and a second connector 6. The tee body 1 includes a straight pipe section 11 and a bypass pipe section 12 that are interconnected. The first end of the straight pipe section 11 is an outlet, and the second end is an inlet. A connecting port is formed on the straight pipe section 11 that communicates with the bypass pipe section 12, and the end of the bypass pipe section 12 furthest from the connecting port forms an inlet. The medication can enter through the two inlets and exit through the outlet.

[0031] The aforementioned filter assembly includes a filter body 2, a first filter element 3, and a second filter element 4. The filter body 2 has a main flow channel 21 extending axially and a branch flow channel 22 extending from the outer wall and communicating with the main flow channel 21. The branch flow channel 22 extends radially along the filter body 2 and forms an opening on the outer wall of the filter body 2. The filter body 2 has a first slot 23 extending from the outer wall and cutting off the main flow channel 21, and a second slot 24 extending from the outer wall and cutting off the branch flow channel 22. Specifically, the extension direction of the first slot 23 is perpendicular to the central axis direction of the filter body 2, and the first slot 23 forms an insertion port on the outer wall of the filter body 2, while the end of the first slot 23 away from the insertion port forms a closed end. The extension direction of the second slot 24 is perpendicular to the extension direction of the branch flow channel 22. The second slot 24 forms an insertion port on the outer wall of the filter body 2, while the end of the second slot 24 away from the insertion port forms a closed end. The first filter element 3 is inserted into the first slot 23 through its insertion port, and the second filter element 4 is inserted into the second slot 24 through its insertion port. With this structural design, when the liquid medicine flows in the first flow channel 21, it can be filtered by the first filter element 3. When the liquid medicine flows in the second flow channel 22, it can be filtered by the second filter element 4. The second filter element 4 and the second filter element 5 are conventional components in the prior art.

[0032] The aforementioned filter body 2 has an assembly position that is axially inserted into the first end of the straight pipe section 11. In this assembly position, the outer wall of the filter body 2 is sealed to the inner wall of the straight pipe section 11, and the branch flow channel 22 communicates with the connecting port. Through this structural design, the channel within the straight pipe section 11 can communicate with the first flow channel 21, and the channel within the bypass pipe section 12 can communicate with the second flow channel 22. Specifically, a threaded section is machined on the outer wall of the filter body 2, and a mating threaded section is machined on the inner wall of the straight pipe section 11. The filter body 2 and the straight pipe section 11 are connected by a threaded seal through the threaded section and the mating threaded section. The aforementioned threaded section has threaded portions distributed on the outer side of the second slot 24, so that a seal is formed between the outer side of the second slot 24 and the straight pipe section 11 during assembly to prevent leakage.

[0033] In this embodiment, a stepped structure is machined on the filter body 2. When the filter body 2 moves to the assembly position, the stepped structure abuts against the straight pipe section 11 to limit its movement.

[0034] In the aforementioned assembly position, the first filter element 3 is close to the second end of the straight pipe section 11, and the second filter element 4 is far away from the second end of the straight pipe section 11, so that the filtration operations of the first filter element 3 and the second filter element 4 do not interfere with each other.

[0035] The aforementioned first pipe connector 5 is threadedly connected to the filter body 2 and communicates with one end of the main channel 21, allowing the medicine to be discharged through the first pipe connector 5. The second pipe connector 6 is threadedly connected to the end of the bypass section 12 away from the communication port and the second end of the straight pipe section 11, allowing the medicine to enter the bypass section 12 and the straight pipe section 11 through the two second pipe connectors 6 respectively.

[0036] In this embodiment, in the specific structural design, a first frame 31 is arranged around the outer periphery of the first filter 3 to support the first filter 3; the first frame 31 is tightly inserted into the first slot 23. A first arc-shaped surface 311 is machined on the outer edge of the first frame 31 facing the first slot 23. In this assembly position, the first arc-shaped surface 311 is clearance-fitted with the inner wall of the straight pipe section 11, thereby confining the first frame 31 within the first slot 23. A second frame 41 is arranged around the outer periphery of the second filter 4 to support the second filter 4. The second frame 41 is tightly inserted into the second slot 24. A second arc-shaped surface 411 is machined on the outer edge of the second frame 41 facing the second slot 24. In the aforementioned assembly position, the second arc-shaped surface 411 is clearance-fitted with the inner wall of the straight pipe section 11, thereby confining the second frame 41 within the second slot 24. With the above assembly method, when the filter body 2 is in the assembly position, the first filter 3 and the second filter 4 can be limited in the first slot 23 and the second slot 24 through the inner wall of the straight pipe section 11, so that the first filter 3 and the second filter 4 are assembled stably and reliably.

[0037] In use, the liquid medicine enters through the second end of the straight pipe section 11, then enters the first flow channel 21 and exits from the first pipe joint 5. Alternatively, the liquid medicine enters through one end of the bypass pipe section 12, then enters the first flow channel 21 through the connecting second flow channel 22, and exits from the first pipe joint 5. During the above process, the first filter 3 can filter the liquid medicine in the straight pipe section 11, and the second filter 4 can filter the liquid medicine in the bypass pipe section 12.

[0038] During disassembly and assembly, the filter body 2 is removed from the straight pipe section 11 by screwing it on. The first filter element 3 and the second filter element 4 are then pulled out from the insertion ports on the outer wall of the filter body 2, and new second filter elements 4 and 4 are inserted. The entire assembly is then screwed back into the straight pipe section 11. This combination of methods allows for the simultaneous removal and replacement of the first filter element 3 and the second filter element 4 by disassembling the filter body 2 from the straight pipe section 11. This enables simultaneous disassembly and replacement of the filter elements in both channels of the three-way body 1, making filter element removal and assembly convenient, time-saving, and labor-saving, effectively meeting practical application needs. The first filter element 3 and the second filter element 4 are respectively assembled onto the filter body 2 via a plug-in connection, enabling quick disassembly and assembly of the first filter element 3 and the second filter element 4.

[0039] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A filter three-way structure for an infusion set, comprising a three-way body and a filter assembly; characterized in that: The tee body includes a straight pipe section and a bypass pipe section that are interconnected; the straight pipe section has a connection port that communicates with the bypass pipe section; The filter assembly includes a filter body, a first filter element, and a second filter element; The filter body is provided with a main flow channel extending axially and a branch flow channel extending from the outer wall and communicating with the main flow channel; the filter body is provided with a first slot extending from the outer wall and cutting off the main flow channel, and a second slot extending from the outer wall and cutting off the branch flow channel; the first filter sheet is inserted into the first slot; the second filter sheet is inserted into the second slot. The filter body has an assembly position that is axially inserted into the first end of the straight pipe section; in the assembly position, the outer wall of the filter body is sealed to the inner wall of the straight pipe section, and the branch flow channel is connected to the communication port.

2. The filter tee for an infusion set of claim 1, wherein: The first slot extends in a direction perpendicular to the central axis of the filter body; the branch channel extends radially along the filter body; the second slot extends in a direction perpendicular to the branch channel.

3. The filter tee for an infusion set of claim 1, wherein: The outer wall of the filter body is provided with a threaded section that is connected to the threaded connection of the straight pipe section; the threaded section has a threaded portion distributed on the outside of the second slot.

4. The filter tee for an infusion set of claim 1, wherein: In the assembly position, the first filter element is close to the second end of the straight pipe section, and the second filter element is away from the second end of the straight pipe section.

5. The filter tee for an infusion set of claim 1, wherein: The filter tee structure includes a first pipe connector; the first pipe connector is threadedly connected to the filter body and communicates with one end of the main channel.

6. The filter tee for an infusion set of claim 1, wherein: The filter tee structure includes a second pipe connector; the second pipe connector is threadedly connected to the end of the bypass pipe section away from the connection port and the second end of the straight pipe section.

7. The filter tee for an infusion set of claim 1, wherein: The first filter is provided with a first frame around its outer perimeter; the first frame is tightly inserted into the first slot; the outer edge of the first frame facing the first slot is provided with a first arc-shaped surface; in the assembly position, the first arc-shaped surface is in clearance fit with the inner wall of the straight pipe section.

8. The filter tee for an infusion set of claim 1, wherein: The second filter is provided with a second frame around its outer perimeter; the second frame is tightly inserted into the second slot; the outer edge of the second frame facing the second slot is provided with a second arc-shaped surface; in the assembly position, the second arc-shaped surface is in clearance fit with the inner wall of the straight pipe section.

Images