Novel filter element and infusion tube

Abstract

The novel filter element is composed of a liquid inlet pipe, a liquid outlet pipe, a filter pipe and a filter part, the two ends of the filter pipe are detachably connected to the liquid inlet pipe and the liquid outlet pipe respectively, the filter part is arranged in the filter pipe, the two wings of the filter part are connected between the filter pipe and the liquid inlet pipe respectively, the whole structure is simple, cost is reduced, and the novel filter element is convenient to use. Overall assembly is achieved without gluing connection, so that the situation of liquid leakage caused by poor gluing sealing is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a novel filter element and an infusion tube. Background Art

[0002] The existing filtering materials used in infusion sets are mainly two types: heavy ion microporous filter membranes and cellulose membranes, and their appearance forms are both plate-shaped or planar-shaped. Therefore, when using these materials as the filter materials in infusion sets, the first thought is to lay these membrane materials flat as the bottom and stick them to the bottom of a hollow column, then inject the liquid to be filtered into the hollow column, and then apply a certain pressure to separate the mixed liquid or residue with a particle size smaller than or larger than the pore size of the filter membrane.

[0003] As shown in the attached Figure 1 figure, currently in the infusion set industry, this structure is generally used to make the infusion set filter element, and it has the following problems: using glue to assemble the base, the upper cover and the filter membrane together will increase the probability of liquid leakage, and at the same time increase the manufacturing cost and difficulty. Summary of the Utility Model

[0004] The purpose of the utility model is to propose a novel filter element for the technical problems existing in the background art.

[0005] To achieve the above technical purpose, the technical solution adopted by the utility model is as follows:

[0006] In the first aspect, the utility model provides a novel filter element, which includes a liquid inlet pipe, a liquid outlet pipe, a filter pipe and a filtering member. The two ends of the filter pipe are respectively detachably connected to the liquid inlet pipe and the liquid outlet pipe, the filtering member is placed inside the filter pipe, and the two wings of the filtering member are respectively connected between the filter pipe and the liquid inlet pipe.

[0007] Preferably, the two ends of the liquid outlet pipe are respectively threadedly connected to the liquid inlet pipe and the liquid outlet pipe.

[0008] Preferably, the liquid inlet pipe is provided with a support pipe extending inside the filter pipe, and the outer wall of the support pipe fits with the inner wall of the liquid inlet pipe to clamp the two wings of the filtering member.

[0009] Preferably, the filtering member is a U-shaped tubular filter bag.

[0010] Preferably, the filtering member is made of PET material.

[0011] In the second aspect, the utility model provides an infusion tube, which includes the novel filter element according to any one of the above solutions.

[0012] The utility model has the following beneficial technical effects compared with the prior art: It is composed of a liquid inlet pipe, a liquid outlet pipe, a filter pipe and a filter element. The two ends of the filter pipe are respectively detachably connected to the liquid inlet pipe and the liquid outlet pipe. The filter element is placed inside the filter pipe, and the two wings of the filter element are respectively connected between the filter pipe and the liquid inlet pipe. The overall structure is simple, the cost is reduced, and there is no glue connection during the overall assembly to avoid liquid leakage caused by poor glue sealing. Brief Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of the prior art;

[0014] Figure 2 is a schematic structural diagram of an embodiment of the utility model.

[0015] Reference numerals in the drawings: 100 upper cover, 101 lower shell, 102 filter membrane, 200 liquid inlet pipe, 201 liquid outlet pipe, 202 filter pipe, 203 support pipe, 204 filter element. Detailed Embodiment

[0016] It should be noted that, without conflict, the embodiments in the utility model and the features in the embodiments can be combined with each other.

[0017] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or part referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise stated, the meaning of "a plurality" is two or more.

[0018] In the description of the utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or a specific connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two parts. For those of ordinary skill in the art, the specific meanings of the above terms in the utility model can be understood according to specific situations.

[0019] The following will describe in detail the specific embodiments of the present utility model with reference to the accompanying drawings.

[0020] As Figure 1 - Figure 2 shown, in the first aspect, the present utility model provides a new type of filter element, which includes a liquid inlet pipe 200, a liquid outlet pipe 201, a filter pipe 202, and a filter element 204. The two ends of the filter pipe 202 are detachably connected to the liquid inlet pipe 200 and the liquid outlet pipe 201 respectively. The filter element 204 is placed inside the filter pipe 202, and the two wings of the filter element 204 are respectively connected between the filter pipe 202 and the liquid inlet pipe 200.

[0021] Specifically, referring to the prior art solution in the attached Figure 1 drawings, it uses an upper cover 100 and a lower shell 101 to clamp the filter membrane 102 therein, and the upper cover 100 and the lower shell 101 are bonded together with glue. However, when the bonding part of the glue is not properly processed, liquid leakage is likely to occur, and it is difficult to maintain later. In this embodiment, a detachable connection method is adopted. Specifically, the two ends of the filter pipe 202 are respectively threadedly connected to the liquid inlet pipe 200 and the liquid outlet pipe 201. The threaded connection method has the advantages of convenient operation and good sealing effect, improving the error tolerance rate of manual installation, and effectively avoiding liquid leakage caused by improper operation. Canceling the glue encapsulation reduces the manufacturing cost.

[0022] Furthermore, the liquid inlet pipe 200 is provided with a support pipe 203 extending inside the filter pipe 202. The outer wall of the support pipe 203 fits with the inner wall of the liquid inlet pipe 200 to clamp the two wings of the filter element 204.

[0023] Specifically, the support pipe 203 is actually a pipe body of the liquid inlet pipe 200 extending into the filter pipe 202. It is used to support the two wings of the filter element 204, and cooperates with the inner wall of the liquid inlet pipe 200 to clamp the two wings of the filter element 204 therein. At the same time, it supports the two wings of the filter element 204 to ensure the normal operation of the filtering work and improve the filtering effect.

[0024] Specifically, the filter element 204 is a U-shaped tubular filter bag. As shown in the attached Figure 2 drawings, the concave part of the filter element 204 faces the liquid inlet of the liquid inlet pipe 200. It can be understood that when the U-shaped tubular filter bag is filtering, larger particles will concentrate at the bottom of the U-shaped tubular filter bag, forming a relatively small part of the blockage. Compared with the traditional circular filter membrane, the filter element 204 of the present utility model expands the filtering area and simultaneously reduces the probability of blockage of the micropores on the filter element.

[0025] When the U-shaped tubular filter bag of the present utility model filters the same amount of liquid medicine in the same time as the circular filter membrane, the material area used for making the U-shaped tubular filter bag including the waste material is smaller than the material area used for making the circular filter membrane including the waste material, so as to solve the technical problem of "a large amount of waste material is generated during the cutting of the traditional circular filter membrane, resulting in material waste".

[0026] Further, the filter element 204 is made of PET material. The PET material has excellent physical and mechanical properties as well as hygienic safety. The filter element 204 is a U-shaped tubular filter bag made of PET material, which has 20 - 30 micropores per square centimeter and has a good filtering smoothness effect. At the same time, the tubular design has accurate inner and outer diameter dimensions. In this embodiment, according to the corresponding dimensions and tolerances, the tubular filter element 204 is conveniently sleeved on the support tube 203, and after the threaded fit of the liquid inlet tube 200 and the filter tube 202, the filter element 204 is further compacted and fixed in the filter tube 202, with convenient operation and simple use.

[0027] The present utility model provides an infusion tube in a second aspect, which includes the novel filter element of any one of the above solutions.

[0028] As above is a novel filter element or various implementation manners provided in combination with specific contents, and it is not considered that the specific implementation of the present utility model is only limited to these descriptions. Any method, structure, etc. that is similar or identical to the present utility model, or any several technical deductions or replacements made under the premise of the concept of the present utility model, should be regarded as the protection scope of the present utility model.

Claims

1. A new type of filter element, characterized in that, It includes an inlet pipe (200), an outlet pipe (201), a filter pipe (202) and a filter element (204). Both ends of the filter pipe (202) are detachably connected to the inlet pipe (200) and the outlet pipe (201) respectively. The filter element (204) is placed inside the filter pipe (202), and both wings of the filter element (204) are connected between the filter pipe (202) and the inlet pipe (200).

2. The novel filter element according to claim 1, wherein Both ends of the outlet pipe (201) are threadedly connected to the inlet pipe (200) and the outlet pipe (201) respectively.

3. A novel filter element according to claim 1, characterized in that, The inlet pipe (200) is provided with a support pipe (203) extending inside the filter pipe (202). The outer wall of the support pipe (203) is in contact with the inner wall of the inlet pipe (200) to clamp both wings of the filter element (204).

4. A novel filter element according to claim 1, characterized in that, The filter element (204) is a U-shaped tubular filter bag.

5. A novel filter element according to claim 1, characterized in that, The filter element (204) is made of PET material.

6. An infusion tube, characterized in that, It includes a new type of filter element as described in any one of claims 1-5.

Images