Needle type pipettor suction head

Abstract

The utility model discloses a needle type pipettor suction head, which relates to the technical field of pipettors, and adopts the technical scheme that the needle type pipettor suction head comprises a sleeve and a needle head, one end, close to the needle head, of the sleeve is fixedly connected with a fixing piece, and the fixing piece is fixedly connected with the needle head. The liquid suction device has the effects of sucking all liquid as much as possible, avoiding sucking cell balls, membrane materials and the like, and avoiding damage caused by careless contact with objects in the use process.

Description

Technical Field

[0001] This utility model relates to the field of pipette technology, and more specifically, to a needle pipette tip. Background Technology

[0002] A pipette is a commonly used device for transferring liquids in laboratory operations and is widely used in biological experiments. Its main function is to accurately transfer liquid from one container to another, and it is often used in cell culture, molecular biology experiments (such as the preparation of PCR reaction mixtures), enzyme reactions, sample dilution, and other operations.

[0003] Currently, in the field of cell culture, when using pipettes to aspirate culture medium, the existing pipette tips are too large, making it easy to aspirate cell pellets; and when using pipette tips to aspirate membrane materials, the membrane material is easily aspirated away. In view of this, the inventors propose a needle-type pipette tip. Utility Model Content

[0004] The purpose of this invention is to provide a needle pipette tip to solve the above-mentioned problems.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a needle pipette tip, including a sleeve and a needle, wherein a fixing member is fixedly connected to one end of the sleeve near the needle, and the fixing member is fixedly connected to the needle.

[0006] The present invention is further configured such that the sleeve, the fixing member and the needle are all hollow inside.

[0007] The present invention is further configured such that: the sleeve is provided with an extension tube near the needle tip, and the extension tube is fixedly connected to the fixing member.

[0008] The present invention is further configured such that the diameter of the extension tube is smaller than that of the sleeve.

[0009] The present invention is further configured such that: the extension cylinder is provided with a plurality of reinforcing plates, and the reinforcing plates are fixedly connected to the sleeve.

[0010] In summary, this utility model has the following beneficial effects:

[0011] 1. This utility model provides a needle-type pipette tip that reduces the diameter of existing pipettes and tips, thus avoiding the aspiration of tiny samples such as cell spheres and membrane materials.

[0012] 2. The connection between the needle and the sleeve can be strengthened by the extension tube, fixing parts, and reinforcing plate to avoid damage to the needle caused by accidental contact with objects during use. Attached Figure Description

[0013] Figure 1This is a perspective view of the pipette tip in an embodiment of this utility model;

[0014] Figure 2 This is a bottom view of the pipette tip in an embodiment of this utility model;

[0015] Figure 3 This is a cross-sectional view of the pipette tip AA in an embodiment of this utility model;

[0016] Figure 4 This is an assembly diagram of the pipette tip, pipette, and pipette head in an embodiment of this utility model.

[0017] In the diagram: 1. Pipette tip; 2. Pipette head; 3. Pipette; 101. Sleeve; 102. Extension sleeve; 103. Reinforcing plate; 104. Fixing element; 105. Needle. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example:

[0020] A needle pipette tip, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the device includes a sleeve 101 and a needle 105. A fixing member 104 is fixedly connected to one end of the sleeve 101 near the needle 105. The fixing member 104 is fixedly connected to the needle 105. The sleeve 101, the fixing member 104, and the needle 105 are all hollow inside. The needle 105 can be made of metal to improve the durability of the device. The size of the sleeve 101 is adapted to the pipette tip 2 of the pipette 3. The inner diameter of the needle 105 is smaller than the inner diameter of the pipette tip 2 of the pipette 3 to avoid aspirating cell pellets and membrane materials.

[0021] In this embodiment, an extension tube 102 is provided near the needle tip 105 on the sleeve 101, and the extension tube 102 is fixedly connected to the fixing member 104. The diameter of the extension tube 102 is smaller than that of the sleeve 101; the extension tube 102 is provided with multiple reinforcing plates 103, and the reinforcing plates 103 are fixedly connected to the sleeve 101. The extension tube 102, the fixing member 104, and the reinforcing plates 103 can strengthen the connection between the needle tip 105 and the sleeve 101, and avoid damage caused by accidental contact with objects during use.

[0022] Working principle and usage process:

[0023] like Figure 4 As shown, when using it, first attach the pipette tip 2 to the pipette 3, and then attach the pipette tip 1 of this utility model to the aspiration point of the pipette tip 2. Liquid can then be aspirated through the pipette 3. The inner diameter of the needle 105 is smaller than the inner diameter of the pipette tip 2 of the pipette 3. It can also be customized as needed to make its diameter smaller than cell spheres or small samples to avoid aspirating cell spheres and membrane materials.

[0024] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pin pipette tip, characterized by: The utility model relates to a needle fixing device, including sleeve (101) and needle (105), sleeve (101) is fixedly connected with fixed part (104) near one end of needle (105), fixed part (104) is fixedly connected with needle (105), sleeve (101) is equipped with extension cylinder (102) near needle (105), extension cylinder (102) is fixedly connected with fixed part (104), and the diameter of extension cylinder (102) is less than sleeve (101).

2. A needle pipette tip according to claim 1, characterized in that: The sleeve (101), the fixed part (104) and the needle (105) are all hollow inside.

3. A needle pipette tip as defined in claim 1, characterized by: A plurality of reinforcing plates (103) are arranged on the extension cylinder (102), and the reinforcing plates (103) are fixedly connected with the sleeve (101).

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