Disposable breathing filter

Abstract

The utility model relates to the technical field of medical instruments, and discloses a disposable breathing filter which comprises an upper cover, a lower cover, an air inlet pipe, an air outlet pipe and a filter element, the upper cover is in threaded connection with the lower cover, the air inlet pipe is fixedly arranged at the top of the upper cover, the air outlet pipe is fixedly arranged at the bottom of the lower cover, and the filter element is arranged on the lower cover. The filter element is fixedly arranged in the lower cover, a gas distribution plate is fixedly arranged in the upper cover, the gas distribution plate is of a hollow structure, and a plurality of uniformly distributed gas distribution holes are formed in the lower surface of the gas distribution plate. The filter element is provided with a uniform gas distribution structure, so that gas can uniformly pass through the surface of the filter element, the utilization rate of the filter element is improved, and the filtering efficiency of the filter is improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a disposable breathing filter. Background Technology

[0002] Common medical devices in respiratory departments include respiratory filters. A respiratory filter is a device specifically designed for use with anesthesia breathing equipment or pulmonary function instruments. It is used to filter particulate matter in the gas during gas exchange. To avoid cross-infection between patients, respiratory filters are usually disposable items.

[0003] For example, the publication (announcement) number CN214860323U discloses a disposable breathing filter, including a body, the body comprising an upper cover, a lower cover, and a filter element, the upper cover having a first groove inside, a first rubber ring fixedly bonded to the inner circumference of the upper cover, and a silicone ring fixedly bonded to the inner circumference of the first rubber ring.

[0004] In the above-described solution, after the gas enters the interior of the upper and lower covers through the inlet pipe, it is filtered by the filter element. Because the diameter of the inlet pipe is small, and smaller than the diameter of the filter element, the gas continuously passes through the center of the filter element, while the surrounding areas remain unfiltered, resulting in reduced filter efficiency. Therefore, a disposable breathing filter is proposed. Utility Model Content

[0005] The purpose of this invention is to solve the problems raised in the background art by providing a disposable breathing filter.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A disposable breathing filter includes an upper cover, a lower cover, an inlet pipe, an outlet pipe, and a filter element. The upper cover and the lower cover are threaded together. The inlet pipe is fixedly disposed on the top of the upper cover, and the outlet pipe is fixedly disposed on the bottom of the lower cover. The filter element is fixedly disposed inside the lower cover. An air distribution plate is fixedly disposed inside the upper cover. The air distribution plate has a hollow structure, and multiple evenly distributed air distribution holes are opened on the lower surface of the air distribution plate.

[0008] Preferably, a threaded ring is fixedly provided at the bottom edge of the upper cover, and a threaded groove that mates with the threaded ring is provided at the top edge of the lower cover.

[0009] Preferably, the inner sidewall of the lower cover is fixedly provided with two retaining rings, and the filter element is disposed between the two retaining rings.

[0010] Preferably, the lower end of the air intake pipe extends into the interior of the upper cover, and the lower end of the air intake pipe is fixedly connected to the center of the upper surface of the air distribution plate.

[0011] Preferably, the upper cover, lower cover, air inlet pipe, and air outlet pipe are all made of disposable medical PVC.

[0012] Preferably, the filter element is a polytetrafluoroethylene (PTFE) filter element.

[0013] Compared with the prior art, the present invention provides a disposable breathing filter, which has the following beneficial effects:

[0014] 1. This disposable breathing filter has an air distribution plate inside the upper cover, which is connected to the air inlet pipe. When the gas enters the upper and lower covers through the air inlet pipe, it passes through the air distribution plate and is then evenly blown onto the surface of the filter element through multiple air distribution holes. This improves the utilization rate of the filter element and enhances the filtration efficiency of the filter.

[0015] 2. This disposable breathing filter, through the threaded ring and threaded groove set between the upper cover and the lower cover, when the upper cover and the lower cover are connected, the threaded ring and the threaded groove are threadedly connected by rotating the upper cover and the lower cover in opposite directions.

[0016] The parts of this device not described herein are the same as or can be implemented using existing technologies. This utility model has a uniform gas distribution structure, which allows the gas to pass evenly through the surface of the filter element, thereby improving the utilization rate of the filter element and increasing the filtration efficiency of the filter. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a disposable breathing filter proposed in this utility model;

[0018] Figure 2 for Figure 1 Sectional view in;

[0019] Figure 3 for Figure 2 A 3D view showing the connection between the central air intake pipe and the air distributor.

[0020] Figure 4 for Figure 2 A bottom view of the central air distribution panel.

[0021] In the diagram: 1. Top cover; 2. Bottom cover; 3. Air inlet pipe; 4. Air outlet pipe; 5. Filter element; 6. Air distribution plate; 7. Air distribution holes; 8. Threaded ring; 9. Edge retaining ring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying 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.

[0024] Example 1

[0025] Reference Figure 1-4 A disposable breathing filter includes an upper cover 1, a lower cover 2, an inlet pipe 3, an outlet pipe 4, and a filter element 5. The upper cover 1, lower cover 2, inlet pipe 3, and outlet pipe 4 are all made of disposable medical-grade PVC. Disposable medical-grade PVC material has good chemical stability, safety, physicochemical properties, mechanical properties, and processability. The upper cover 1 and lower cover 2 are threaded together. The inlet pipe 3 is fixedly located at the top of the upper cover 1, and the outlet pipe 4 is fixedly located at the bottom of the lower cover 2. The filter element 5 is fixedly located inside the lower cover 2. Two retaining rings 9 are fixedly provided on the inner side wall of the lower cover 2, and the filter element 5 is disposed between the two retaining rings 9. The two retaining rings 9 can securely fasten the edges of the filter element 5. Inside the lower cover 2, the filter element 5 is made of polytetrafluoroethylene. Inside the upper cover 1, the air distribution plate 6 is fixed. The air distribution plate 6 has a hollow structure and multiple evenly distributed air distribution holes 7 are opened on the lower surface of the air distribution plate 6. The lower end of the air inlet pipe 3 extends into the interior of the upper cover 1 and is fixedly connected to the center of the upper surface of the air distribution plate 6. When the gas enters the interior of the upper cover 1 and the lower cover 2 through the air inlet pipe 3, the gas passes through the interior of the air distribution plate 6 and is then evenly blown onto the surface of the filter element 5 through the multiple air distribution holes 7, which can improve the utilization rate of the filter element 5. The gas after passing through the filter element 5 is then discharged outward through the air outlet pipe 4, which improves the filtration efficiency of the filter.

[0026] Example 2

[0027] Reference Figure 1-2 A threaded ring 8 is fixedly provided at the bottom edge of the upper cover 1, and a threaded groove that mates with the threaded ring 8 is provided at the top edge of the lower cover 2. When the upper cover 1 and the lower cover 2 are connected, the threaded ring 8 and the threaded groove are threadedly connected by rotating the upper cover 1 and the lower cover 2 in opposite directions, which also makes it easy to disassemble and separate the upper cover 1 and the lower cover 2.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A disposable breathing filter, comprising an upper cover (1), a lower cover (2), an inlet pipe (3), an outlet pipe (4), and a filter element (5), characterized in that, The upper cover (1) and the lower cover (2) are threaded together. The air inlet pipe (3) is fixedly installed on the top of the upper cover (1). The air outlet pipe (4) is fixedly installed on the bottom of the lower cover (2). The filter element (5) is fixedly installed inside the lower cover (2). The upper cover (1) is fixedly provided with an air distribution plate (6). The air distribution plate (6) adopts a hollow structure, and multiple evenly distributed air distribution holes (7) are opened on the lower surface of the air distribution plate (6).

2. A disposable breathing filter according to claim 1, characterized in that, A threaded ring (8) is fixedly provided at the bottom edge of the upper cover (1), and a threaded groove that cooperates with the threaded ring (8) is provided at the top edge of the lower cover (2).

3. A disposable breathing filter according to claim 1, characterized in that, The inner wall of the lower cover (2) is fixedly provided with two retaining rings (9), and the filter element (5) is disposed between the two retaining rings (9).

4. A disposable breathing filter according to claim 1, characterized in that, The lower end of the air intake pipe (3) extends into the interior of the upper cover (1), and the lower end of the air intake pipe (3) is fixedly connected to the center of the upper surface of the air distribution plate (6).

5. A disposable breathing filter according to claim 1, characterized in that, The upper cover (1), lower cover (2), air inlet pipe (3), and air outlet pipe (4) are all made of disposable medical PVC.

6. A disposable breathing filter according to claim 1, characterized in that, The filter element (5) is a polytetrafluoroethylene filter element.

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