Filter for blood purification

Abstract

The utility model provides a blood purification filter which comprises a shell, a bottom cover is mounted at the bottom of the shell, a filter element arranged in the shell is fixedly connected to the top of the bottom cover, a connecting pipe is fixedly connected to the bottom of the bottom cover, a connecting ring sleeves the connecting pipe, a protective sleeve sleeves the connecting pipe, and mounting holes which are symmetrically distributed are formed in the protective sleeve. A first elastic piece and a second elastic piece which are symmetrically distributed are fixedly connected to the bottom of the connecting ring, the first elastic piece is clamped with the mounting hole, a pressing rod is fixedly connected to the first elastic piece, and the second elastic piece abuts against the first elastic piece; the protective sleeve can be conveniently taken down from the connecting pipe, the operation can be completed by one hand, and the operation is simple and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of filters for blood purification, in particular to a filter for blood purification. Background Art

[0002] Blood purification is also called dialysis in daily life. Its meaning is: to draw the patient's blood out of the body and pass it through a purification device to remove certain pathogenic substances and purify the blood to achieve the purpose of treating the disease. In this process, a disposable blood purification filter is required. However, the existing technology has the following shortcomings when used:

[0003] Before using a disposable blood purification filter, the protective sleeve on the connecting tube needs to be removed, and then the blood transfusion tube and the connecting tube need to be installed together. Currently, the protective sleeve and the connecting tube are mostly snap-fitted. When removing the protective sleeve, medical staff need to hold the disposable blood purification filter with one hand and pull the protective sleeve down with the other hand to remove it, which is inconvenient and laborious to operate.

[0004] Therefore, a blood purification filter is urgently needed to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the problem that the protective sleeve on the connecting tube of the existing disposable blood purification filter needs to be removed before use, and then the blood transfusion tube and the connecting tube are installed together. At present, the protective sleeve and the connecting tube are mostly snap-fitted. When medical staff remove the protective sleeve, they need to hold the disposable blood purification filter with one hand and pull the protective sleeve downward with the other hand to remove it, which is inconvenient and laborious to operate.

[0006] In order to achieve the above-mentioned invention object, the utility model provides the following technical solutions:

[0007] A filter for blood purification is used to improve the above problems.

[0008] The specific application is as follows:

[0009] A filter for blood purification comprises a shell, a bottom cover is installed at the bottom of the shell, a filter element placed in the shell is fixedly connected to the top of the bottom cover, a connecting tube is fixedly connected to the bottom of the bottom cover, a connecting ring is arranged on the outer sleeve of the connecting tube, a protective sleeve is arranged on the outer sleeve, symmetrically distributed mounting holes are opened on the protective sleeve, a symmetrically distributed first spring sheet and a second spring sheet are fixedly connected to the bottom of the connecting ring, the first spring sheet is clamped with the mounting hole, a pressing rod is fixedly connected to the first spring sheet, and the second spring sheet conflicts with the first spring sheet.

[0010] As a preferred technical solution of the present application, a needle is fixedly connected to the top of the shell, and a through hole is opened on the needle.

[0011] As a preferred technical solution of the present application, the needle outer fixing sleeve is provided with a threaded block, and the threaded block is externally threadedly connected to the needle protective sleeve.

[0012] As a preferred technical solution of the present application, the outer fixing sleeve of the connecting pipe is provided with a guard ring, and the protective sleeve is fitted with the guard ring.

[0013] As a preferred technical solution of the present application, the filter element is a polyester monofilament filter element.

[0014] As a preferred technical solution of the present application, the connecting ring is fixedly connected to the bottom of the bottom cover.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] In the scheme of this application:

[0017] By means of the provided mounting hole, the first spring sheet, the second spring sheet and the pressing rod, the medical staff presses the two pressing rods towards each other with one hand, thereby driving the first spring sheet to deform, and driving the second spring sheet to deform through the first spring sheet, so that after the first spring sheet is separated from the mounting hole, the protective sleeve falls off the connecting tube. The operation is simple and convenient and can be completed with one hand, which solves the problem in the prior art that the protective sleeve on the connecting tube needs to be removed before use of the disposable blood purification filter, and then the blood transfusion tube and the connecting tube are installed together. At present, the protective sleeve and the connecting tube are mostly snap-fitted. When removing the protective sleeve, the medical staff needs to hold the disposable blood purification filter with one hand and pull the protective sleeve downwards with the other hand to remove it, which is inconvenient and laborious to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a blood purification filter provided in this application.

[0019] Figure 2 This is a schematic diagram of the overall structure of a blood purification filter provided in this application.

[0020] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of part A.

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of a blood purification filter provided in this application.

[0022] Figure 5 for Figure 1 Schematic diagram of the enlarged structure of part B.

[0023] Indicated in the figure:

[0024] 1. Shell; 2. Bottom cover; 3. Filter element; 4. Connecting pipe; 5. Connecting ring; 6. Protective sleeve; 7. Mounting hole; 8. First spring piece; 9. Second spring piece; 10. Pressing rod; 11. Needle; 12. Through hole; 13. Threaded block; 14. Needle protective sleeve; 15. Protective ring. DETAILED DESCRIPTION

[0025] To make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments.

[0026] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the present invention to be protected, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0029] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "upper", "lower", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invention product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0030] Example:

[0031] like Figure 1-5As shown, a filter for blood purification proposed in this embodiment includes a shell 1, a bottom cover 2 is installed at the bottom of the shell 1, a filter element 3 placed in the shell 1 is fixedly connected to the top of the bottom cover 2, a connecting tube 4 is fixedly connected to the bottom of the bottom cover 2, a connecting ring 5 is provided on the outer sleeve of the connecting tube 4, a protective sleeve 6 is provided on the outer sleeve of the connecting tube 4, symmetrically distributed mounting holes 7 are opened on the protective sleeve 6, a symmetrically distributed first spring piece 8 and a second spring piece 9 are fixedly connected to the bottom of the connecting ring 5, the first spring piece 8 and the mounting hole 7 are snap-fitted, a pressing rod 10 is fixedly connected to the first spring piece 8, the medical staff presses the two pressing rods 10 in a direction close to each other with one hand, the second spring piece 9 and the first spring piece 8 conflict with each other, drive the first spring piece 8 to deform, and drive the second spring piece 9 to deform through the first spring piece 8, so that the first spring piece 8 is separated from the mounting hole 7, and the protective sleeve 6 falls off from the connecting tube 4, the operation is simple and convenient, and can be completed with one hand.

[0032] like Figure 4 As shown, a needle 11 is fixedly connected to the top of the shell 1, and a through hole 12 is opened on the needle 11. The blood in the blood bag is placed in the shell 1 through the through hole 12, and the blood is filtered when passing through the filter element 3 in the shell 1.

[0033] like Figure 4 As shown, a threaded block 13 is provided on the outer fixing sleeve of the needle 11, and a needle protection sleeve 14 is externally threadedly connected to the threaded block 13. The needle protection sleeve 14 is rotated to be removed, and the needle 11 is inserted into the corresponding blood bag.

[0034] like Figure 1 and Figure 4 As shown, a protective ring 15 is provided on the outer fixed sleeve of the connecting pipe 4, and the protective sleeve 6 fits with the protective ring 15 to prevent dust from entering the connecting pipe 4 and causing contamination.

[0035] like Figure 4 As shown, the filter element 3 is a polyester monofilament filter element, and the filter element 3 filters the blood to remove impurities in the blood.

[0036] like Figure 4 As shown, the connecting ring 5 is fixedly connected to the bottom of the bottom cover 2 .

[0037] Specifically, when the present blood purification filter is in use: the needle protection sleeve 14 is rotated to remove it, the needle 11 is inserted into the corresponding blood bag, and then the medical staff presses the two pressing rods 10 in a direction close to each other with one hand, driving the first spring piece 8 to deform, and the second spring piece 9 is deformed by the first spring piece 8, so that the first spring piece 8 is separated from the mounting hole 7, and the protection sleeve 6 falls off the connecting tube 4. The operation is simple and convenient and can be completed with one hand. Then, the blood transfusion tube is installed on the connecting tube 4, and the blood in the blood bag is placed in the shell 1 through the through hole 12. The blood is filtered when passing through the filter element 3 in the shell 1, and then blood is transfused through the connecting tube 4 and the blood transfusion tube.

[0038] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A filter for blood purification, comprising a housing (1), characterized in that: A bottom cover (2) is installed at the bottom of the housing (1); a filter element (3) placed in the housing (1) is fixedly connected to the top of the bottom cover (2); a connecting pipe (4) is fixedly connected to the bottom of the bottom cover (2); a connecting ring (5) is provided on the outer sleeve of the connecting pipe (4); a protective sleeve (6) is provided on the outer sleeve of the connecting pipe (4); symmetrically distributed mounting holes (7) are opened on the protective sleeve (6); a symmetrically distributed first spring sheet (8) and a second spring sheet (9) are fixedly connected to the bottom of the connecting ring (5); the first spring sheet (8) and the mounting hole (7) are clamped together; a pressing rod (10) is fixedly connected to the first spring sheet (8); and the second spring sheet (9) and the first spring sheet (8) are in conflict with each other.

2. A blood purification filter according to claim 1, characterized in that: A needle (11) is fixedly connected to the top of the housing (1), and a through hole (12) is provided on the needle (11).

3. A blood purification filter according to claim 2, characterized in that: The outer fixing sleeve of the needle (11) is provided with a threaded block (13), and the outer thread of the threaded block (13) is connected with a needle protection sleeve (14).

4. A blood purification filter according to claim 3, characterized in that: The outer fixed sleeve of the connecting pipe (4) is provided with a protective ring (15), and the protective sleeve (6) is in close contact with the protective ring (15).

5. A blood purification filter according to claim 4, characterized in that: The filter element (3) is a polyester monofilament filter element.

6. A blood purification filter according to claim 5, characterized in that: The connecting ring (5) is fixedly connected to the bottom of the bottom cover (2).

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