Pipette assembly and pipetting module

Abstract

The utility model belongs to the technical field of medical detection, and relates to a pipettor assembly which comprises a first pipettor and a second pipettor which are arranged in parallel, the first pipettor comprises a first pipettor body and a first end cover, the first end cover is arranged at the pipetting end of the first pipettor body, and the first end cover is provided with a protruding part and a first avoiding groove which are arranged in parallel; the second pipettor comprises a second pipettor body and a second end cover, the second end cover is arranged at the pipetting end of the second pipettor body, and the second end cover is provided with a first limiting convex block; when the first pipettor and the second pipettor are arranged in parallel, the side wall of the first pipettor body is attached to the side wall of the second pipettor body, the first limiting protruding block is arranged in the first receding groove, and the end of the first limiting protruding block is attached to the inner wall of the first receding groove. The utility model further relates to a pipetting module. According to the technical scheme provided by the invention, the structure compactness of the multi-channel pipettor can be improved, the space is saved, and the precision and miniaturization of the pipetting module are facilitated.

Description

Technical Field

[0001] The present application relates to the field of medical detection technology, and more specifically, to a pipette component and a pipetting module. Background Art

[0002] With the rapid development of biomedicine and other technologies, the high-throughput demand for liquid processing in laboratories such as biology, chemistry, environment, pharmaceutical research and development, food, as well as hospitals, blood stations and other units, has increased. In order to gradually face more complex liquid processing objects and more experimental occasions that require high throughput, it is necessary to conduct high-throughput large-scale experiments. Therefore, the demand for multifunctional liquid processing platforms on the market has greatly increased, among which pneumatic high-precision pipettes are one of the key components. In order to cope with large-throughput liquid processing occasions, it is usually necessary to assemble multiple pipettes together for use. Since the current shape of the pipette pump is mostly rectangular or some irregular shapes, the combination method takes up more space, has a huge volume, and is heavy in weight. In addition, the spacing between multiple pipettes cannot be more suitable for and faster high-throughput experiments. Small spacing, therefore, not only greatly increases the weight and design difficulty of the liquid processing platform robot arm, but also fails to improve the efficiency of liquid processing.

[0003] In order to meet the special liquid processing occasions of pipetting with a small distance between pipettes, the existing liquid processing platform usually utilizes a double-sided assembly method to assemble multiple pipettes in sequence for use (such as: CN213222237U, CN212083464U), that is, the left and right sides are assembled separately. This method will cause the width of the pipette arm carrying the pipette to be greatly increased, further resulting in a significant reduction in the space utilization of the liquid processing platform. At the same time, the design difficulty and cost are greatly increased, which is not conducive to the miniaturization and precision of the liquid processing platform. Utility Model Content

[0004] The technical problem to be solved by the embodiments of the present application is that the existing method of assembling multiple pipettes has low space utilization, occupies a large area, and is not conducive to the precision and miniaturization of the liquid processing platform.

[0005] In order to solve the above technical problems, the present application embodiment provides a pipette assembly, which adopts the following technical solution:

[0006] A pipette assembly comprises a first pipette and a second pipette arranged in parallel;

[0007] The first pipette includes a first pipette body and a first end cap, wherein the first end cap is mounted on the pipetting end of the first pipette body, and the first end cap is provided with a protrusion and a first avoidance groove arranged in parallel;

[0008] The second pipette includes a second pipette body and a second end cover, wherein the second end cover is mounted on the pipetting end of the second pipette body, and the second end cover is provided with a first limiting protrusion;

[0009] When the first pipette and the second pipette are arranged side by side, the side wall of the first pipette body is in contact with the side wall of the second pipette body, and the first limiting protrusion is placed in the first avoidance groove, wherein the end of the first limiting protrusion is in contact with the inner wall of the first avoidance groove.

[0010] Furthermore, the depth of the first avoidance groove is equal to the length of the first limiting protrusion.

[0011] Furthermore, the first avoidance groove is a right-angle trapezoidal groove, wherein the inner wall of the first avoidance groove is an inclined wall;

[0012] The end of the first limiting protrusion is a right-angled trapezoidal structure that matches the shape of the right-angled trapezoidal groove, and the end of the first limiting protrusion is an inclined surface.

[0013] Furthermore, an angle formed between an inner wall of the first avoidance groove and a bottom surface of the first avoidance groove is 90° to 110°.

[0014] Further, the first pipette body comprises a first shell and a first liquid collection assembly, the first end cover is mounted on the bottom surface of the first shell, the first liquid collection assembly is mounted on the bottom surface of the first shell, and the liquid collection end of the first liquid collection assembly is arranged through the center position of the protruding portion;

[0015] The second pipette body includes a second shell and a second liquid collection assembly, the second end cover is mounted on the bottom surface of the second shell, the second liquid collection assembly is mounted on the bottom surface of the second shell, and the liquid collection end of the second liquid collection assembly is arranged through the center position of the first limiting protrusion.

[0016] Furthermore, the distance between the center position of the protruding portion and the center position of the first limiting protrusion is less than 9 mm; and / or

[0017] The distance between the center position of the protruding portion and the center position of the first limiting protrusion is greater than or equal to 9 mm.

[0018] Furthermore, the first shell is provided with a second avoidance groove, and the second shell is provided with a second limiting protrusion;

[0019] When the first pipette and the second pipette are arranged in parallel, the second limiting protrusion is placed in the second avoidance groove.

[0020] Furthermore, the depth of the second avoidance groove is equal to the length of the second limiting protrusion.

[0021] In order to solve the above technical problems, the present application also provides a pipetting module, which adopts the following technical solution:

[0022] A pipetting module comprises two pipette assemblies as described above arranged in parallel.

[0023] Further, the side walls of the first pipettes of two adjacent pipette assemblies are abutted;

[0024] The first pipette includes a first pipette body, the first pipette body includes a first shell and a first liquid collection component, and the first liquid collection component is installed on the bottom surface of the first shell;

[0025] When the two pipette assemblies are arranged side by side, the distance between the two first liquid taking assemblies is less than 9 mm.

[0026] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0027] The pipette assembly provided in the present application enables the first pipette and the second pipette to be assembled on a single side when they are arranged side by side through the structural arrangement of the first end cover and the second end cover, which is beneficial to reducing the size of the pipette assembly; at the same time, due to the arrangement of the first limiting protrusion placed in the first avoidance groove, the relative shaking between the first pipette and the second pipette can be reduced, the liquid adding stability of the multi-channel pipette is improved, and the processing efficiency of the liquid adding and pipetting of the multi-channel pipette is beneficial to the. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the scheme of the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 is a schematic structural diagram of a pipette assembly according to an embodiment of the present application;

[0030] Figure 2 is a schematic structural diagram of the pipette assembly in another direction of an embodiment of the present application;

[0031] Figure 3 is a bottom view of the first pipette of an embodiment of the present application;

[0032] Figure 4 is a bottom view of a second pipette according to an embodiment of the present application;

[0033] Figure 5 is a bottom view of the pipette assembly of an embodiment of the present application;

[0034] Figure 6 is a schematic structural diagram of a liquid transfer module according to an embodiment of the present application;

[0035] Figure 7 It is a bottom view of the pipetting module of an embodiment of the present application.

[0036] Reference numerals:

[0037] 1. First pipette; 11. First pipette body; 111. First shell; 1111. Second avoidance groove; 112. First liquid collection assembly; 12. First end cover; 121. Protrusion; 122. First avoidance groove; 2. Second pipette; 21. Second pipette body; 211. Second shell; 2111. Second limit protrusion; 212. Second liquid collection assembly; 22. Second end cover; 221. First limit protrusion. DETAILED DESCRIPTION

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0039] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0040] See also Figure 1 , Figure 2 As shown, an embodiment of the present application provides a pipette assembly, comprising a first pipette 1 and a second pipette 2 arranged in parallel.

[0041] See also Figure 1 , Figure 2 , Figure 3As shown, in some embodiments, the first pipette 1 includes a first pipette body 11 and a first end cover 12, the first end cover 12 is mounted on the pipetting end of the first pipette body 11, and the first end cover 12 is provided with a protrusion 121 and a first avoidance groove 122 arranged in parallel. In this embodiment, the first pipette body 11 includes a first shell 111 and a first liquid collection component 112, the first end cover 12 is mounted on the bottom surface of the first shell 111, the first liquid collection component 112 is mounted on the bottom surface of the first shell 111, and the liquid collection end of the first liquid collection component 112 is arranged through the center position of the protrusion 121.

[0042] See also Figure 1 , Figure 2 , Figure 4 As shown, in some embodiments, the second pipette 2 includes a second pipette body 21 and a second end cover 22, the second end cover 22 is mounted on the pipetting end of the second pipette body 21, and the second end cover 22 is provided with a first limiting protrusion 221. In this embodiment, the second pipette body 21 includes a second shell 211 and a second liquid collection component 212, the second end cover 22 is mounted on the bottom surface of the second shell 211, the second liquid collection component 212 is mounted on the bottom surface of the second shell 211, and the liquid collection end of the second liquid collection component 212 is set through the center position of the first limiting protrusion 221.

[0043] See also Figure 1 , Figure 2 , Figure 5 As shown, when the first pipette 1 and the second pipette 2 are arranged side by side to form a pipette assembly, the side wall of the first pipette body 11 fits with the side wall of the second pipette body 21, and the first limiting protrusion 221 is placed in the first avoidance groove 122, wherein the end of the first limiting protrusion 221 fits with the inner wall of the first avoidance groove 122.

[0044] The pipette assembly provided in the embodiment of the present application can be assembled on a single side when the first pipette 1 and the second pipette 2 are arranged side by side through the structural arrangement of the first end cover 12 and the second end cover 22, which is beneficial to reducing the size of the pipette assembly; at the same time, due to the arrangement of the first limiting protrusion 221 placed in the first avoidance groove 122, the relative shaking between the first pipette 1 and the second pipette 2 can be reduced, the liquid adding stability of the multi-channel pipette is improved, and the processing efficiency of the liquid adding and pipetting of the multi-channel pipette is beneficial to the multi-channel pipette.

[0045] See also Figure 5As shown, in some embodiments, the depth of the first avoidance groove 122 is equal to the length of the first limiting protrusion 221. By setting the depth of the first avoidance groove 122 and the length of the limiting protrusion, the limiting protrusion can be completely placed in the first avoidance groove 122, thereby improving the space utilization of the pipette assembly and reducing the overall size of the pipette assembly.

[0046] Please continue reading Figure 5 As shown, in some embodiments, since the first limiting protrusion 221 is completely placed in the first avoidance groove 122, and the first liquid collection component 112 is set through the center position of the protrusion 121, and the second liquid collection component 212 is set through the center position of the first limiting protrusion 221, therefore, the distance a between the first liquid collection component 112 and the second liquid collection component 212 in the pipette component is the distance between the center position of the protrusion 121 and the center position of the first limiting protrusion 221.

[0047] In this embodiment, the distance between the center position of the protruding portion 121 and the center position of the first limiting protrusion 221 is less than 9 mm.

[0048] See also Figure 3 , Figure 5 As shown, in some embodiments, in some embodiments, the first avoidance groove 122 is a right-angled trapezoidal groove, wherein the inner wall of the first avoidance groove 122 is a slanted wall. In this embodiment, the first avoidance groove 122 is set as a right-angled trapezoidal groove, so that the cross-section of the protrusions arranged in parallel is a right-angled trapezoid. In this embodiment, the top surface area of ​​the protrusion is smaller than the bottom surface area, forming a boss shape with a small top and a large bottom. By designing the shape of the protrusion, when the protrusion is made of insulating material, the strength of the protrusion can be increased.

[0049] In some embodiments, an angle α formed between an inner wall of the first avoidance groove 122 and a bottom surface of the first avoidance groove 122 is 90° to 110°.

[0050] See also Figure 4 , Figure 5 As shown, the end of the first limiting protrusion 221 is a right-angled trapezoidal structure that matches the shape of the right-angled trapezoidal groove, and the end of the first limiting protrusion 221 is an inclined surface.

[0051] In the embodiment of the present application, the shape of the first limiting protrusion 221 is designed to increase the contact area between the first limiting protrusion 221 and the first avoidance groove 122 , thereby improving the assembly stability between the first pipette 1 and the second pipette 2 .

[0052] See also Figure 2As shown, a second avoidance groove 1111 is provided on the first shell 111 , and a second limiting protrusion 2111 is provided on the second shell 211 ; when the first pipette 1 and the second pipette 2 are arranged in parallel, the second limiting protrusion 2111 is placed in the second avoidance groove 1111 .

[0053] The embodiment of the present application further provides a second avoidance groove 1111 and a second limiting protrusion 2111 on the first shell 111 and the second shell 211 to further improve the installation stability of the pipette assembly formed by the parallel arrangement of the first pipette 1 and the second pipette 2, thereby improving the stability of liquid extraction and liquid addition of the pipette assembly.

[0054] In some embodiments, the depth of the second avoidance groove 1111 is equal to the length of the second limiting protrusion 2111.

[0055] See also Figure 6 , Figure 7 As shown, based on the above-mentioned single-side assembled pipette assembly, an embodiment of the present application further provides a pipette module, comprising two pipette assemblies as described above arranged in parallel.

[0056] In this embodiment, when two pipette assemblies are arranged side by side, the side walls of the first pipettes 1 of the two adjacent pipette assemblies are fitted together to achieve single-sided assembly of the pipette module, wherein the first pipette 1 includes a first pipette body 11, the first pipette body 11 includes a first shell 111 and a first liquid collection assembly 112, and the first liquid collection assembly 112 is installed on the bottom surface of the first shell 111; when the two pipette assemblies are arranged side by side, the distance b between the two first liquid collection assemblies 112 is less than 9 mm.

[0057] The embodiment of the present application adopts the above-mentioned pipette assembly as a unit to ensure that the multiple pipette assemblies in the pipette module are assembled on a single side under the premise of the same spacing between the multiple pipette assemblies, which is conducive to reducing the size of the pipette assembly.

[0058] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A pipette assembly, characterized in that: It comprises a first pipette and a second pipette which are arranged in parallel; The first pipette includes a first pipette body and a first end cap, wherein the first end cap is mounted on the pipetting end of the first pipette body, and the first end cap is provided with a protrusion and a first avoidance groove arranged in parallel; The second pipette includes a second pipette body and a second end cover, wherein the second end cover is mounted on the pipetting end of the second pipette body, and the second end cover is provided with a first limiting protrusion; When the first pipette and the second pipette are arranged side by side, the side wall of the first pipette body is in contact with the side wall of the second pipette body, and the first limiting protrusion is placed in the first avoidance groove, wherein the end of the first limiting protrusion is in contact with the inner wall of the first avoidance groove.

2. The pipette assembly according to claim 1, characterized in that The depth of the first avoidance groove is equal to the length of the first limiting protrusion.

3. The pipette assembly according to claim 1, characterized in that The first avoidance groove is a right-angle trapezoidal groove, wherein the inner wall of the first avoidance groove is an inclined wall; The end of the first limiting protrusion is a right-angled trapezoidal structure that matches the shape of the right-angled trapezoidal groove, and the end of the first limiting protrusion is an inclined surface.

4. The pipette assembly according to claim 3, characterized in that An included angle formed between an inner wall of the first avoidance groove and a bottom surface of the first avoidance groove is 90° to 110°.

5. The pipette assembly according to claim 1, characterized in that The first pipette body comprises a first shell and a first liquid collection assembly, the first end cover is mounted on the bottom surface of the first shell, the first liquid collection assembly is mounted on the bottom surface of the first shell, and the liquid collection end of the first liquid collection assembly passes through the center position of the protruding portion; The second pipette body includes a second shell and a second liquid collection assembly, the second end cover is mounted on the bottom surface of the second shell, the second liquid collection assembly is mounted on the bottom surface of the second shell, and the liquid collection end of the second liquid collection assembly passes through the center position of the first limiting protrusion.

6. The pipette assembly according to claim 5, characterized in that The distance between the center position of the protrusion and the center position of the first limiting protrusion is less than 9 mm; and / or The distance between the center position of the protruding portion and the center position of the first limiting protrusion is greater than or equal to 9 mm.

7. The pipette assembly according to claim 5, characterized in that The first shell is provided with a second avoidance groove, and the second shell is provided with a second limiting protrusion; When the first pipette and the second pipette are arranged in parallel, the second limiting protrusion is placed in the second avoidance groove.

8. The pipette assembly according to claim 7, characterized in that The depth of the second avoidance groove is equal to the length of the second limiting protrusion.

9. A liquid transfer module, characterized in that: The invention comprises two pipette assemblies as claimed in any one of claims 1 to 8 arranged in parallel.

10. The liquid transfer module according to claim 9, characterized in that: The side walls of the first pipettes of two adjacent pipette assemblies are abutted; The first pipette includes a first pipette body, the first pipette body includes a first shell and a first liquid collection component, and the first liquid collection component is installed on the bottom surface of the first shell; When the two pipette assemblies are arranged side by side, the distance between the two first liquid taking assemblies is less than 9 mm.

Images