Pipette tip

Abstract

The utility model belongs to the technical field of experimental instruments, and particularly relates to a pipette tip which comprises a tip main body and an auxiliary component, the gun head main body is of a hollow tubular structure; the gun head main body comprises a mounting end, a pressurizing section and a suction end which are arranged along an axis; the auxiliary assembly comprises a spiral slide way; the spiral slide way is arranged in the pressurizing section and the suction end; the internal diameter of the pressurizing section is smaller than that of the mounting end; the internal diameter of the pressurizing section is smaller than that of the suction end. The pipette has the beneficial effects that the spiral slide way is used for sharing the gravity to be overcome when viscous liquid enters the pipette head, so that the influence of the gravity on the suction force of the pipette is reduced; the mounting end, the pressurizing section and the suction end which are arranged along the axis form a structure with a thin middle part and two thick ends, the mounting end is conveniently mounted on a pipettor, and the suction end increases the contact area between air in the gun head and viscous liquid, so that the flow is increased; and the middle thin pressurizing section increases the pressure intensity of the pipettor on the viscous liquid by reducing the diameter of the channel, so that the pressurizing effect is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of experimental instruments, and particularly relates to a pipette tip. Background Art

[0002] A pipette, also known as a liquid transfer device, is a measuring tool used to transfer liquid from one container to another within a certain range. It is widely used in fields such as biology and chemistry.

[0003] Pipettes are common liquid transfer devices used in biology and chemistry. Currently, standard pipette tips are effective for aspirating non-viscous liquids. However, when aspirating viscous liquids, these tips, due to their small diameter, can create significant resistance and difficulty aspirating. Liquid can also adhere to the tip, making operation inconvenient and the volume of liquid transferred inaccurate, hindering experimental progress.

[0004] In order to solve the problem of difficulty in aspirating liquid, a common method in laboratories is to manually cut the tip of the pipette to expand the caliber. However, manual cutting will make the broken end of the tip uneven, and may also cause cracks in the tip due to uneven force. At the same time, the shortened tip cannot correspond to the maximum range of the pipette, which can easily cause liquid to be sucked into the pipette. Although the method of using manual experimental correction to obtain the relationship between the volume of absorbed liquid and the volume of loss can accurately measure the actual volume of discharged liquid, the actual operation is very cumbersome and will result in waste of reagents. The obtained relationship is not fully applicable to pipettes that have not been used for a long time and different pipettes, and it is inevitable that errors will be introduced.

[0005] In view of the above problems, the utility model provides a pipette tip. Utility Model Content

[0006] In order to overcome the problems raised in the background technology, the utility model provides a pipette tip.

[0007] A pipette tip comprises a tip body and an auxiliary component; the tip body is a hollow tubular structure; the tip body comprises a mounting end, a pressurizing section, and a suction end arranged along an axis; the auxiliary component comprises a spiral slide; the spiral slide is arranged inside the pressurizing section and the suction end; the internal diameter of the pressurizing section is smaller than the internal diameter of the mounting end; the internal diameter of the pressurizing section is smaller than the internal diameter of the suction end.

[0008] Furthermore, the auxiliary component also includes a guide column; the guide column is located at the center of the spiral slide; the axis of the guide column coincides with the axis of the gun head body.

[0009] Furthermore, a contraction port is provided on the side of the suction end away from the pressurizing section.

[0010] Furthermore, the auxiliary component includes at least two spiral slideways; the spiral slideways are arranged in a circle inside the gun head body with the axis of the gun head body as the center.

[0011] Furthermore, the length of the mounting end is smaller than the length of the pressurizing section.

[0012] Furthermore, the length of the mounting end is shorter than the length of the attracting end.

[0013] Furthermore, the length of the pressurizing section is shorter than the length of the suction end.

[0014] Furthermore, the inner diameter of the mounting end is equal to or greater than the inner diameter of the suction end.

[0015] Alternatively, the inner diameter of the attraction end is equal to or larger than the inner diameter of the mounting end.

[0016] Furthermore, a first guide tube is provided between the mounting end and the pressurizing section; and a second guide tube is provided between the pressurizing section and the suction end.

[0017] Beneficial effects of the utility model:

[0018] 1. The spiral slide distributes the gravity that the viscous liquid has to overcome when entering the gun tip, reducing the effect of gravity on the suction force of the pipette;

[0019] 2. The mounting end, pressurizing section, and suction end arranged along the axis form a structure with a thin middle and thick ends. The mounting end is easy to install on the pipette, and the suction end increases the contact area between the air inside the gun tip and the viscous liquid, thereby increasing the flow rate; the thin pressurizing section in the middle increases the pressure of the pipette on the viscous liquid by reducing the diameter of the channel, thereby achieving a pressurization effect;

[0020] 3. A contraction port is provided on the side of the suction end away from the pressurizing section to prevent the liquid sucked into the gun head body from dripping when the piston reaches the set position. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional diagram of a pipette tip for implementing the utility model;

[0022] Figure 2 This is a front view of a pipette tip for implementing the utility model;

[0023] Figure 3 for Figure 2 AA sectional view;

[0024] Figure 4 A top view of a pipette tip for implementing the utility model;

[0025] Figure 5 A partial cross-sectional view of a pipette tip for implementing the present utility model;

[0026] Figure 6 A partially cutaway perspective view of a pipette tip for implementing the present invention;

[0027] In the figure, 1. Gun head body; 2. Auxiliary components; 11. Mounting end; 12. Pressurization section; 13. Suction end; 14. Retraction port; 21. Spiral slide; 22. Guide column. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, rather than all the embodiments. The present invention can also be implemented or applied through different specific implementation methods. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be understood that the terms "center", "length", "up", "down", "front", "back", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention 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. Therefore, they cannot be understood as a limitation on the present invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0031] like Figure 1-6 The pipette tip shown includes a pipette tip body 1 and an auxiliary component 2; the pipette tip body 1 is a hollow tubular structure; the pipette tip body 1 includes a mounting end 11, a pressurizing section 12 and a suction end 13 arranged along an axis; the auxiliary component 2 includes a spiral slide 21; the spiral slide 21 is arranged inside the pressurizing section 12 and the suction end 13; the internal diameter of the pressurizing section 12 is smaller than the internal diameter of the mounting end 11; the internal diameter of the pressurizing section 12 is smaller than the internal diameter of the suction end 13.

[0032] The mounting end 11, pressurizing section 12, and suction end 13 arranged along the axis form a structure that is thin in the middle and thick at both ends. The mounting end 11 is convenient for installation on the pipette, and the suction end 13 increases the contact area between the air inside the gun tip and the viscous liquid, thereby increasing the flow rate; the thin pressurizing section 12 in the middle increases the pressure of the pipette on the viscous liquid by reducing the diameter of the channel, thereby achieving a pressurization effect.

[0033] The spiral slide 21 distributes the gravity that the viscous liquid needs to overcome when entering the interior of the pipette tip, thereby reducing the influence of gravity on the suction force of the pipette.

[0034] A first guide tube is provided between the mounting end 11 and the pressurizing section 12, while a second guide tube is provided between the pressurizing section 12 and the suction end 13. The first guide tube connects the mounting end 11 and the pressurizing section 12, while the second guide tube connects the pressurizing section 12 and the suction end 13.

[0035] The first guide tube and the second guide tube are both tubular structures with one end being thick and the other end being thin.

[0036] In some embodiments of the present application, the auxiliary component 2 further includes a guide post 22; the guide post 22 is located at the center of the spiral slide 21; the axis of the guide post 22 coincides with the axis of the gun head body 1. The functions of the guide post 22 are:

[0037] 1. The guide post 22 is fixed at the center of the spiral slide 21, blocking the sharp point in the center of the spiral slide 21 to prevent viscous liquid from remaining;

[0038] 2. Increase the mechanical strength of the auxiliary component 2 to prevent the spiral slide 21 from deforming during the process of attracting viscous liquid, thereby preventing the gun head body 1 from deforming, thereby affecting the volume of the gun head body 1 and reducing the accuracy of the gun head body 1.

[0039] In some examples of the present application, a contraction port 14 is provided on the side of the suction end 13 away from the pressurizing section 12 to prevent the liquid sucked into the gun head body 1 from dripping spontaneously when the piston reaches the set position.

[0040] In a specific example of the present application, the auxiliary component 2 includes at least two spiral slideways 21 ; the plurality of spiral slideways 21 are arranged in a circle inside the gun head body 1 with the axis of the gun head body 1 as the center.

[0041] Specifically, the auxiliary component 2 includes two spiral slideways 21 ; the two spiral slideways 21 are arranged in a circle inside the gun head body 1 with the axis of the gun head body 1 as the center.

[0042] like Figure 1-6 As shown, the length of the mounting end 11 is shorter than the length of the pressurizing section 12 .

[0043] Furthermore, the length of the mounting end 11 is shorter than the length of the attracting end 13 .

[0044] Furthermore, the length of the pressurizing section 12 is shorter than the length of the suction end 13 .

[0045] like Figure 1-6 As shown, the inner diameter of the mounting end 11 is equal to or larger than the inner diameter of the suction end 13 .

[0046] Alternatively, the inner diameter of the attraction end 13 is equal to or larger than the inner diameter of the mounting end 11 .

[0047] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," and "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of these terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0048] The embodiments described in this application are only a portion of the embodiments of the present invention, not all of them. Those skilled in the art can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through different specific embodiments. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making any creative efforts are within the scope of protection of the present invention.

Claims

1. A pipette tip, comprising a tip body and an auxiliary component; the tip body is a hollow tubular structure, characterized in that: The gun head body includes a mounting end, a pressurizing section and a suction end arranged along an axis; the auxiliary component includes a spiral slide; the spiral slide is arranged inside the pressurizing section and the suction end; the internal diameter of the pressurizing section is smaller than the internal diameter of the mounting end; the internal diameter of the pressurizing section is smaller than the internal diameter of the suction end.

2. A pipette tip according to claim 1, characterized in that, The auxiliary component also includes a guide column; the guide column is located at the center of the spiral slide; the axis of the guide column coincides with the axis of the gun head body.

3. A pipette tip according to claim 1, characterized in that, A contraction port is provided on a side of the suction end away from the pressurizing section.

4. A pipette tip according to claim 1, characterized in that, The auxiliary component includes at least two spiral slideways; the spiral slideways are arranged in a circle with the axis of the gun head body as the center inside the gun head body.

5. A pipette tip according to claim 1, characterized in that: The length of the mounting end is smaller than the length of the pressurizing section.

6. A pipette tip according to claim 1, characterized in that: The length of the mounting end is smaller than the length of the attracting end.

7. A pipette tip according to claim 1, characterized in that: The length of the pressurizing section is shorter than the length of the suction end.

8. A pipette tip according to any one of claims 5 to 7, characterized in that: The inner diameter of the mounting end is equal to or larger than the inner diameter of the attracting end.

9. A pipette tip according to any one of claims 5 to 7, characterized in that: The inner diameter of the attraction end is equal to or larger than the inner diameter of the mounting end.

10. A pipette tip according to any one of claims 1 to 7, characterized in that: A first guide tube is provided between the mounting end and the pressurizing section; a second guide tube is provided between the pressurizing section and the suction end.

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