High-precision low-adsorption pipetting suction head

Abstract

The utility model relates to the technical field of pipetting tips, in particular to a high-precision low-adsorption pipetting tip. The utility model provides a high-precision low-adsorption pipetting suction head which solves the technical problem that a pipetting suction head in the prior art is low in pipetting precision. The utility model discloses a high-precision low-adsorption pipetting suction head which comprises a tube body, the connector is arranged on the pipe body; inner reinforcing ribs are arranged on the inner wall of the pipe body, and outer reinforcing ribs are arranged on the outer wall of the pipe body. According to the pipette tip, the inner reinforcing rib and the outer reinforcing rib are arranged and are both used for improving the strength of the tube body, and the tube body is not prone to deformation even if the tube body is collided in the using process, so that liquid in the tube body is not prone to leakage, and the precision of the pipette tip is improved. Besides, the inner reinforcing ribs are arranged along the axis direction of the tube body, and the inner reinforcing ribs also have a liquid guiding function in a liquid suction or drainage process, so that the liquid is easy to suck or discharge, and the precision of the pipetting tip is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipette tip technical field especially relates to a high accuracy low adsorption pipette tip. BACKGROUND

[0002] Molecular biology experiments are generally carried out in milliliter or even microliter reaction volume, therefore, corresponding pipettors are needed to complete low volume liquid transfer operation, and the accuracy of transferred liquid control is very important, which relates to the accuracy of the test process.

[0003] The pipettor and the tip assembly in the prior art are very cumbersome to install, and the sealing performance is not good, liquid suction may not be in place, and in the process of sucking liquid, the tip may touch the bottom of the bottle or other components, which may cause air suction or the cavity to be squeezed to suck liquid, in addition, liquid residue may be left on the tip after use, which affects the accuracy of liquid transfer.

[0004] Therefore, the pipette tip in the prior art has the technical problem of low pipetting accuracy. SUMMARY

[0005] The high accuracy low adsorption pipette tip solves the technical problem of low pipetting accuracy of the pipette tip in the prior art.

[0006] Some embodiments to solve the above technical problems include:

[0007] A high accuracy low adsorption pipette tip, comprising a tube body;

[0008] and a connector, the connector is arranged on the tube body;

[0009] The inner wall of the tube body is provided with an inner reinforcing rib, and the outer wall of the tube body is provided with an outer reinforcing rib, and the inner reinforcing rib is arranged along the axis direction of the tube body;

[0010] The connector comprises a connecting barrel, the connecting barrel is provided with an internal thread, the connecting barrel is communicated with the tube body, an extension barrel communicated with the tube body is arranged in the connecting barrel, and the extension barrel extends into the connecting barrel;

[0011] The side wall of the extension barrel is provided with a sealing gasket, and the sealing gasket is sleeved on the outer wall of the extension barrel.

[0012] Preferably, the cross-sectional shape of the inner reinforcing rib is rectangular.

[0013] Preferably, the inner reinforcing rib has a plurality of reinforcing ribs, and the plurality of reinforcing ribs are uniformly distributed along the circumference of the tube body.

[0014] Preferably, the inner reinforcing rib is integrated with the pipe body, and the pipe body has a larger diameter at one end than at the other end, and the connector is arranged at the end with the larger diameter.

[0015] Preferably, the outer reinforcing rib has a semicircular cross-sectional shape.

[0016] Preferably, the outer reinforcing rib is integrated with the pipe body, and there are a plurality of outer reinforcing ribs, which are uniformly distributed along the length of the pipe body.

[0017] Preferably, the connecting cylinder and the extending cylinder are integrated with the pipe body.

[0018] Preferably, the outer wall of the connecting cylinder is provided with ribs, which are integrated with the connecting cylinder and uniformly distributed along the circumference of the connecting cylinder.

[0019] Preferably, the end of the connecting cylinder away from the pipe body is provided with a folded edge, which is integrated with the connecting cylinder, and the folded edge is uniformly provided with sealing rings, which are bonded to the folded edge, and there are a plurality of sealing rings, which are coaxially arranged.

[0020] Preferably, the sealing gasket comprises a cylinder portion sleeved on the extending cylinder, both ends of the cylinder portion are provided with flanges, the flange at the upper end of the cylinder portion extends towards the center of the cylinder portion, and the flange at the lower end of the cylinder portion extends away from the center of the cylinder portion, and the cylinder portion and the flanges are integrated.

[0021] Compared with the prior art, the utility model has the following advantages:

[0022] By arranging the inner reinforcing rib and the outer reinforcing rib, the inner reinforcing rib and the outer reinforcing rib are used to improve the strength of the pipe body, and even if the pipe body is collided during use, the pipe body is not easy to deform, so that the liquid in the pipe body is not easy to leak, and the precision of the pipette tip is improved. In addition, the inner reinforcing rib is arranged along the axis direction of the pipe body, and the inner reinforcing rib also has the function of guiding the liquid during liquid suction or liquid discharge, so that the liquid is easy to be sucked or discharged, and the precision of the pipette tip is further improved.

[0023] By arranging the inner thread, the pipette tip and the connected component are connected by threads, which effectively improves the sealing performance between the pipette tip and the connected component, and effectively improves the precision of the pipette tip. In addition, by arranging the sealing gasket, the sealing performance between the pipette tip and the connected component is further improved, and the precision of the pipette tip is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] For purposes of explanation, several embodiments of the subject technology are set forth in the following figures. The figures were incorporated herein and constitute a part of the detailed description. In some instances, well-known structures and devices are shown in block diagram form in order to avoid obscuring the concept of the subject technology.

[0025] Figure 1 is a schematic view of the internal structure of the present application.

[0026] Figure 2 is Figure 1 in the figure at A.

[0027] Figure 3 is Figure 1 partial view.

[0028] Figure 4 is a schematic view of the first angle of the present application.

[0029] Figure 5 is a schematic view of the second angle of the present application.

[0030] Figure 6 is an exploded view of the present application.

[0031] shown in the figure:

[0032] 1, pipe body, 11, inner reinforcing rib, 12, outer reinforcing rib.

[0033] 2, connector, 21, connecting barrel, 211, rib, 212, flange, 213, sealing ring, 22, extension barrel, 23, sealing gasket, 231, barrel portion, 232, flange.

[0034] 100, connecting head. DETAILED DESCRIPTION

[0035] The specific embodiments shown hereinbelow are intended to be illustrative of the various configurations of the subject technology and are not intended to represent the only configurations in which the subject technology can be practiced. The specific embodiments include specific details for the purposes of providing a thorough understanding of the subject technology. However, it will be apparent to those skilled in the art that the subject technology can be practiced without these specific details.

[0036] It can be understood that, in this document, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another, without necessarily implying any actual relationship or order between such entities or actions.

[0037] The terms "comprise", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.

[0038] Referring to Figures 1 to 6 As shown in the drawings, a high-precision low-adsorption pipette tip includes a tube body 1;

[0039] and a connector 2, which is arranged on the tube body 1;

[0040] The inner wall of the tube body 1 is provided with an inner reinforcing rib 11, and the outer wall of the tube body 1 is provided with an outer reinforcing rib 12. The inner reinforcing rib 11 is arranged along the axial direction of the tube body 1.

[0041] The connector 2 includes a connecting barrel 21 provided with an internal thread. The connecting barrel 21 communicates with the tube body 1. An extension barrel 22 is arranged in the connecting barrel 21 and communicates with the tube body 1. The extension barrel 22 extends into the connecting barrel 21.

[0042] The side wall of the extension barrel 22 is provided with a sealing gasket 23, which is sleeved on the outer wall of the extension barrel 22.

[0043] It can be understood that the low-adsorption pipette tip can be made of a hydrophobic material. That is, the tube body 1 can be made of a hydrophobic material. Alternatively, a hydrophobic layer can be coated on the inner wall of the tube body 1.

[0044] It can be understood that the pipette tip is usually connected with a pipette gun, that is, the pipette gun is the connected component connected with the pipette tip. The pipette gun usually includes a connecting head 100 connected with the pipette tip. The sealing gasket 23 is located between the connecting head 100 and the extension barrel 22, so that the pipette gun and the pipette tip have better sealing performance, preventing leakage between the pipette gun and the pipette tip, and improving the precision of the pipette tip.

[0045] Referring to Figures 1 to 6 As shown in the drawings, in some embodiments, the cross-sectional shape of the inner reinforcing rib 11 is rectangular. The cross-sectional shape of the inner reinforcing rib 11 can also be triangular. The inner reinforcing rib 11 is used to improve the strength of the tube body 1, so the cross-sectional shape of the inner reinforcing rib 11 is not suitable to be circular. The cross-sectional shape of the inner reinforcing rib 11 can also be polygonal. Considering the manufacturing cost, the cross-sectional shape of the inner reinforcing rib 11 is preferably triangular.

[0046] In some embodiments, the inner reinforcing rib 11 has a plurality of reinforcing ribs 11, and the plurality of reinforcing ribs 11 are evenly distributed along the circumference of the pipe body 1. The number of the inner reinforcing rib 11 is not limited, and can be determined according to actual needs. Considering the accuracy of the pipette tip, the number of the inner reinforcing rib 11 is usually not more than 6.

[0047] In some embodiments, the inner reinforcing rib 11 is in an integral structure with the pipe body 1, the diameter of one end of the pipe body 1 is larger than the diameter of the other end of the pipe body 1, and the connector 2 is arranged at the end of the pipe body 1 with the larger diameter. That is, the pipe body 1 is in a hollow circular truncated cone shape. The cavity in the pipe body 1 is also in a circular truncated cone shape, and the wall thickness of the pipe body 1 is uniform.

[0048] In some embodiments, the outer reinforcing rib 12 has a semicircular cross-sectional shape.

[0049] Referring to Figures 1 to 6 In some embodiments, the outer reinforcing rib 12 is in an integral structure with the pipe body 1, and the outer reinforcing rib 12 has a plurality of reinforcing ribs 12, and the plurality of reinforcing ribs 12 are evenly distributed along the length direction of the pipe body 1.

[0050] It can be understood that the inner reinforcing rib 11 cooperates with the outer reinforcing rib 12 to form a grid structure, which can effectively improve the strength of the pipe body 1 and prevent the pipe body 1 from being deformed. The cross-sectional shape of the outer reinforcing rib 12 can also be other shapes.

[0051] In some embodiments, the connecting barrel 21 and the extending barrel 22 are in an integral structure with the pipe body 1.

[0052] It can be understood that the connecting head 100 of the pipette usually includes a threaded barrel matched with the internal thread of the connecting barrel 21, and the threaded barrel is internally provided with a stepped surface matched with the extending barrel 22. The stepped surface shape space is communicated with the internal cavity of the threaded barrel, so that the pipette is communicated with the pipe body 1, and is used for sucking or discharging liquid from the pipe body 1.

[0053] Referring to Figures 1 to 6 In some embodiments, the outer wall of the connecting barrel 21 is provided with a rib 211, the rib 211 is in an integral structure with the connecting barrel 21, and the rib 211 is evenly distributed along the circumferential direction of the connecting barrel 21.

[0054] In some embodiments, the end of the connecting barrel 21 away from the pipe body 1 is provided with a folded edge 212, the folded edge 212 is in an integral structure with the connecting barrel 21, the folded edge 212 is evenly distributed with a sealing ring 213, the sealing ring 213 is bonded to the folded edge 212, and the sealing ring 213 has a plurality of sealing rings 213 coaxially arranged.

[0055] Understandably, the folded edge 212 increases the contact area between the connecting cylinder 21 and the connector 100, giving them a larger contact area and effectively improving the sealing characteristics between them.

[0056] Meanwhile, the folded edge 212 allows for the installation of more sealing rings 213 on the connecting cylinder 21, further optimizing the sealing performance between the connecting cylinder 21 and the connector 100.

[0057] Reference Figures 1 to 6 As shown, in some embodiments, the sealing gasket 23 includes a cylindrical portion 231 sleeved on the extension cylinder 22. Both ends of the cylindrical portion 231 are provided with flanges 232. The flange 232 located at the upper end of the cylindrical portion 231 extends towards the center of the cylindrical portion 231, and the flange 232 located at the lower end of the cylindrical portion 231 extends away from the center of the cylindrical portion 231. The cylindrical portion 231 and the flanges 232 are an integral structure.

[0058] In some embodiments, the flange 232 located at the upper end of the cylindrical portion 231 is located between the stepped surface and the top surface of the extension cylinder 22, and is used to seal the gap between the stepped surface and the top surface of the extension cylinder 22.

[0059] The cylindrical part 231 is located between the side of the extension cylinder 22 and the side of the step surface, so that the side of the extension cylinder 22 and the side of the step surface have better sealing performance.

[0060] The flange 232 located at the upper end of the cylinder 231 is used to seal the end face of the threaded cylinder.

[0061] Reference Figure 3 As shown, by setting the sealing gasket 23, the connector 100 and the connecting tube 21 have better sealing characteristics, which in turn makes the pipette tip and the tube body 1 have better sealing performance, preventing leakage at the connection between the pipette and the tube body 1, and effectively improving the accuracy of the pipette tip.

[0062] The flanges 232 located at both ends of the sealing gasket 23, in addition to their sealing performance, can also prevent the threads from falling off, making the connection between the pipette and the pipette tip more stable and preventing the pipette tip from falling off.

[0063] The above describes the subject matter technical solution of this utility model and its corresponding details. It is understood that the above description is only some implementation schemes of the subject matter technical solution of this utility model, and some details may be omitted in the specific implementation.

[0064] In addition, in some embodiments of the above utility model, a plurality of embodiments can be combined for implementation, and various combination schemes are not listed one by one due to the limited space. Those skilled in the art can freely combine the above embodiments according to the needs in the specific implementation to obtain a better application experience.

[0065] Those skilled in the art can obtain other detailed configurations or drawings according to the subject technical scheme of the utility model and the drawings when implementing the subject technical scheme of the utility model, and obviously, these details still belong to the range covered by the subject technical scheme of the utility model without departing from the subject technical scheme of the utility model.

Claims

1. A high-precision, low-adsorption pipette tip, characterized in that: The device includes a tube body (1) and a connector (2), wherein the connector (2) is disposed on the tube body (1); the inner wall of the tube body (1) is provided with an inner reinforcing rib (11), and the outer wall of the tube body (1) is provided with an outer reinforcing rib (12), wherein the inner reinforcing rib (11) is disposed along the axial direction of the tube body (1); the connector (2) includes a connecting cylinder (21), wherein the connecting cylinder (21) is provided with an internal thread, the connecting cylinder (21) is connected to the tube body (1), and an extension cylinder (22) connected to the tube body (1) is disposed inside the connecting cylinder (21), wherein the extension cylinder (22) extends into the connecting cylinder (21); a sealing gasket (23) is provided on the side wall of the extension cylinder (22), wherein the sealing gasket (23) is sleeved on the outer wall of the extension cylinder (22).

2. The high-precision, low-adsorption pipette tip according to claim 1, characterized in that: The cross-sectional shape of the inner reinforcing rib (11) is rectangular.

3. The high-precision, low-adsorption pipette tip according to claim 2, characterized in that: There are multiple inner reinforcing ribs (11), and the multiple inner reinforcing ribs (11) are evenly distributed along the circumference of the tube body (1).

4. The high-precision, low-adsorption pipette tip according to claim 3, characterized in that: The inner reinforcing rib (11) and the tube body (1) are an integral structure. The diameter of one end of the tube body (1) is larger than the diameter of the other end of the tube body (1). The connector (2) is located at the end of the tube body (1) with the larger diameter.

5. The high-precision, low-adsorption pipette tip according to claim 1, characterized in that: The cross-sectional shape of the outer reinforcing rib (12) is semi-circular.

6. The high-precision, low-adsorption pipette tip according to claim 5, characterized in that: The outer reinforcing rib (12) and the tube body (1) are an integral structure, and there are multiple outer reinforcing ribs (12), which are evenly distributed along the length of the tube body (1).

7. The high-precision, low-adsorption pipette tip according to claim 1, characterized in that: The connecting cylinder (21) and the extension cylinder (22) are both integral with the tube body (1).

8. The high-precision, low-adsorption pipette tip according to claim 7, characterized in that: The outer wall of the connecting cylinder (21) is provided with ribs (211), the ribs (211) and the connecting cylinder (21) are an integral structure, and the ribs (211) are evenly distributed along the circumference of the connecting cylinder (21).

9. The high-precision, low-adsorption pipette tip according to claim 8, characterized in that: The connecting cylinder (21) has a flange (212) at one end away from the tube body (1). The flange (212) and the connecting cylinder (21) are an integral structure. Sealing rings (213) are evenly distributed on the flange (212). The sealing rings (213) are bonded to the flange (212). There are multiple sealing rings (213), and the multiple sealing rings (213) are coaxially arranged.

10. The high-precision, low-adsorption pipette tip according to claim 1, characterized in that: The sealing gasket (23) includes a cylindrical part (231) sleeved on the extension cylinder (22). Both ends of the cylindrical part (231) are provided with flanges (232). The flange (232) located at the upper end of the cylindrical part (231) extends towards the center of the cylindrical part (231), and the flange (232) located at the lower end of the cylindrical part (231) extends away from the center of the cylindrical part (231). The cylindrical part (231) and the flange (232) are an integral structure.

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