Tip for a multi-channel pipettor and mounting structure thereof

Abstract

The utility model relates to the field of suction head for multichannel pipettor, specifically discloses a suction head for multichannel pipettor and mounting structure thereof, including clamping assembly, clamping assembly is provided with two and is symmetrically set up, clamping assembly includes clamping lever, a plurality of fixed clamping ring on clamping lever and two sleeve hoops that set in clamping lever both ends, clamping lever is composed of two symmetrical clamps, the side of two clamps that are close to each other all are solidly provided with the baffle, two baffles abut each other, the clamping groove set up on the upper end of the suction head is convenient for snap ring to be clamped into it, the snap ring is installed end by end alignment, then press the clamping plate of both sides, can press and clamp into the clamping groove the snap ring of both sides of the installation end to the clamping groove, at this moment, the mounting structure is lifted upwards, the multiple suction heads are lifted upwards simultaneously, when pressing down the multichannel pipettor, the tip of the suction head and the bottom wall of the suction head box can be avoided extrusion, the tip of the suction head can be avoided deformation, thereby ensuring the volume accuracy when the suction head absorbs liquid, guaranteeing the precision of experimental result.

Description

Technical Field

[0001] This utility model relates to the field of pipette tips for multichannel pipettes, specifically a multichannel pipette tip and its mounting structure. Background Technology

[0002] Multichannel pipettes are core tools in laboratories for efficient and precise liquid transfer, especially suitable for high-throughput operations. Multiple pipette tips need to be mounted on the multichannel pipette, stored in a tip holder. After aligning the tips with the multichannel pipette, pressing down allows multiple tips to be installed simultaneously. Since the tips often have small-diameter tips, bending or deformation of the tip cross-section may occur during the pressing process. This can lead to changes in the flow rate of liquid drawn by the tips, resulting in uneven liquid volumes across the multiple tips and affecting the accuracy of experimental results. Utility Model Content

[0003] The purpose of this invention is to provide a multichannel pipette tip and its mounting structure to overcome the above-mentioned defects in the prior art.

[0004] A multichannel pipette tip and its mounting structure according to the present invention include:

[0005] The clamping assembly comprises two clamping assemblies arranged symmetrically front to back. Each clamping assembly includes a clamping rod, multiple clamping rings fixed to the clamping rod, and two sleeves fitted onto both ends of the clamping rod. The clamping rod consists of two symmetrical clamping plates, each with a partition fixed to its adjacent side. The two partitions abut against each other, forming a gap between them. Each clamping ring includes a retaining ring and a connecting plate. The retaining ring is semi-circular, and the connecting plate is fixed to the outer circumference of the retaining ring and fitted into the gap between the two clamping plates. The sleeves are fitted onto the ends of the two clamping plates, thereby abutting the two partitions against each other and clamping and fixing the clamping rings to the clamping rod.

[0006] Preferably, there are two elastic connecting components disposed between two clamping components. The two elastic connecting components are located at both ends of the clamping components. The elastic connecting components are used to connect the two clamping components and elastically separate the two clamping components.

[0007] Preferably, the sleeve is square-shaped, and when the upper and lower partitions abut against each other, the inner wall of the sleeve abuts against the outer periphery of the clamping rod.

[0008] Preferably, a padding layer is fixed to the side of the clamping plate near the connecting plate, and the padding layer is made of rubber and has elasticity.

[0009] Preferably, the elastic connection assembly includes a sleeve, a guide rod, and a spring. The sleeve is square-shaped and can be fitted onto the clamping rod. A guide plate is fixedly provided on the lower end face of the sleeve. One end of the guide rod is fixed to one of the guide plates, and the other end of the guide rod passes through the other guide plate and is slidably connected to it. A limiting end is fixedly provided on the other end of the guide rod, and the spring is fixed between the two guide plates.

[0010] This utility model also provides a multi-channel pipette tip, including a suction end and any of the above-described mounting structures. The upper end of the suction end is fixedly provided with a mounting end, and a plurality of circumferentially evenly distributed protrusions are fixedly provided on the outer periphery of the mounting end. The protrusions are arranged parallel to the axial direction of the mounting end, and a slot is formed on the protrusion. The retaining ring in the mounting structure can be fitted into the slot.

[0011] Preferably, the two retaining rings located on both sides of the mounting end can form a complete ring that fits into the retaining groove.

[0012] The beneficial effects of this utility model are as follows: the slot provided at the upper end of the pipette tip facilitates the insertion of the retaining ring. By aligning the retaining rings one by one with the mounting end and then pressing the clamps on both sides, the retaining rings on both sides of the mounting end can be pressed into the slot and locked into the slot. At this time, the mounting structure is lifted upward, and multiple pipette tips are lifted upward simultaneously. This prevents the pipette tip from being squeezed against the bottom wall of the pipette tip box when the multi-channel pipette is pressed downward, thus avoiding deformation of the pipette tip and ensuring the accuracy of the volume of liquid drawn by the pipette tip, thereby guaranteeing the precision of the experimental results. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a utility model Figure 1 Enlarged view of point A in the middle;

[0015] Figure 3 This is a cross-sectional view of the present invention;

[0016] Figure 4 This is a utility model Figure 3 Enlarged view of point B in the middle;

[0017] Figure 5 This is an exploded view of this utility model;

[0018] Figure 6 This is a schematic diagram of the suction head structure in this utility model;

[0019] Figure 7 This is a schematic diagram of the clamping ring in this utility model.

[0020] In the picture:

[0021] 10. Suction end; 11. Mounting end; 12. Protruding plate; 13. Slot; 20. Clamping plate; 201. Partition plate; 22. Hoop; 23. Pad layer; 30. Rod sleeve; 32. Guide plate; 33. Spring; 34. Guide rod; 35. Limiting end; 40. Snap ring; 41. Connecting plate. Detailed Implementation

[0022] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are merely simplified descriptions for the convenience of describing this utility model, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] To make the objectives and advantages of this utility model clearer, the following detailed description of the utility model is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model. As used herein, the terms up and down and left and right are not limited to their strict geometric definitions, but include tolerances for reasonable and inconsistent machining or human errors. The specific features of a multi-channel pipette tip and its mounting structure are described in detail below:

[0024] One embodiment of this utility model:

[0025] Reference Figures 1-7 This utility model provides a multichannel pipette tip and its mounting structure, comprising:

[0026] The clamping assembly has two clamping components arranged symmetrically front and back. The clamping assembly includes a clamping rod 2, multiple clamping rings 4 fixed on the clamping rod 2, and two sleeves 22 sleeved on both ends of the clamping rod 2. The clamping rod 2 is composed of two vertically symmetrical clamping plates 20. Each of the two clamping plates 20 has a partition plate 201 fixed on its side that is close to each other. The two partition plates 201 abut against each other, and a gap is formed between the two clamping plates 20. The clamping ring 4 includes a retaining ring 40 and a connecting plate 41. The upper and lower end faces of the connecting plate 41 are frosted to make its surface rough. The retaining ring 40 is semi-circular. The connecting plate 41 is fixed on the outer periphery of the retaining ring 40 and is fitted into the gap between the two clamping plates 20. The sleeves 22 are sleeved on the ends of the two clamping plates 20, thereby abutting the two partition plates 201 against each other and clamping and fixing the clamping ring 4 on the clamping rod 2. The clamping plates 20, sleeves 22 and clamping rings 4 are all made of stainless steel.

[0027] There are two elastic connection components 3, which are disposed between the two clamping components. The two elastic connection components 3 are respectively disposed at both ends of the clamping components. The elastic connection components 3 are used to connect the two clamping components and elastically separate the two clamping components.

[0028] The sleeve 22 is square-shaped. When the upper and lower partitions 201 abut against each other, the inner wall of the sleeve 22 abuts against the outer periphery of the clamping rod 2.

[0029] A pad 23 is fixed on the side of the clamping plate 20 near the connecting plate 41. The pad 23 is made of rubber and is elastic.

[0030] The elastic connection assembly 3 includes a rod sleeve 30, a guide rod 34, and a spring 33. The rod sleeve 30 is square and can be sleeved on the clamping rod 2. A guide plate 32 is fixed on the lower end face of the rod sleeve 30. One end of the guide rod 34 is fixed on one of the guide plates 32, and the other end of the guide rod 34 passes through the other guide plate 32 and is slidably connected to it. A limiting end 35 is fixed on the other end of the guide rod 34, and the spring 33 is fixed between the two guide plates 32.

[0031] This utility model also provides a multi-channel pipette tip, including a suction end 10 and any of the above-mentioned mounting structures. The upper end of the suction end 10 is fixedly provided with a mounting end 11. The mounting end 11 is used to fit onto the outer periphery of the mounting end 11 of the multi-channel pipette. Multiple circumferentially evenly distributed protrusions 12 are fixed on the mounting end 11. The protrusions 12 are arranged parallel to the axial direction of the mounting end 11. A groove 13 is opened on the protrusion 12. The retaining ring 40 in the mounting structure can be fitted into the groove 13.

[0032] The two retaining rings 40 located on both sides of the mounting end 11 can form a complete ring that fits into the retaining groove 13.

[0033] In use, the suction heads are stored in the suction head box. The spacing between adjacent clamping rings 4 is adjusted according to the spacing between adjacent suction heads so that they correspond one-to-one with multiple suction heads.

[0034] After adjusting the spacing between adjacent clamping rings 4, clamp the connecting plate 41 with the upper and lower clamping plates 20, and then put the sleeve 22 on both ends of the clamping rod 2, so that the upper and lower clamping plates 20 enclose and clamp the connecting plate 41.

[0035] At this time, the two sleeves 30 on the elastic connection assembly 3 are respectively put on the ends of the two clamping rods 2.

[0036] After aligning the multiple clamping rings 4 one by one with the slots 13 at the top of the suction head, press the clamping rods 2 on both sides toward the suction head so that the clamping rings 40 on both sides of the suction head are inserted into the slots 13, and the ring formed by the clamping rings 40 on both sides is fitted around the outer periphery of the mounting end 11.

[0037] Then, lifting the mounting structure causes the pipette tip to move upward, thus moving the tip away from the bottom wall of the pipette tip box. At this point, align the tip of the multi-channel pipette with the mounting end 11 and press the multi-channel pipette towards the pipette tip, so that the tip on the pipette is inserted into the mounting end 11, thereby installing the pipette tip. During this process, the support of the mounting structure prevents the tip tip from being squeezed and deformed by the bottom wall of the pipette tip box.

[0038] Those skilled in the art will appreciate that various modifications to the above embodiments can be made without departing from the overall spirit and concept of this utility model. All such modifications fall within the protection scope of this utility model. The protection scheme of this utility model is defined by the appended claims.

Claims

1. An installation structure, characterized in that, include: The clamping assembly comprises two clamping components arranged symmetrically front to back. Each clamping component includes a clamping rod (2), multiple clamping rings (4) fixed to the clamping rod (2), and two sleeves (22) fitted onto both ends of the clamping rod (2). The clamping rod (2) consists of two vertically symmetrical clamping plates (20). A partition plate (201) is fixed to the side of each clamping plate (20) that is close to each other. The two partition plates (201) abut against each other. The clamping ring (4) includes a retaining ring (40) and a connecting plate (41). The retaining ring (40) is semi-circular. The connecting plate (41) is fixed on the outer periphery of the retaining ring (40). The connecting plate (41) is fitted into the gap between the two clamping plates (20). The sleeve (22) is sleeved on the ends of the two clamping plates (20), thereby abutting the two partitions (201) against each other and clamping and fixing the clamping ring (4) on the clamping rod (2). Two elastic connection components (3) are provided and are disposed between two clamping components. The two elastic connection components (3) are respectively disposed at both ends of the clamping components. The elastic connection components (3) are used to connect the two clamping components and elastically separate the two clamping components.

2. The installation structure according to claim 1, characterized in that, The sleeve (22) is square-shaped. When the upper and lower partitions (201) abut against each other, the inner wall of the sleeve (22) abuts against the outer periphery of the clamping rod (2).

3. The installation structure according to claim 2, characterized in that, A pad (23) is fixed to the side of the clamp (20) near the connecting plate (41), the pad (23) being made of rubber and having elasticity.

4. The installation structure according to claim 1, characterized in that, The elastic connection assembly (3) includes a sleeve (30), a guide rod (34), and a spring (33). The sleeve (30) is square and can be sleeved on the clamping rod (2). A guide plate (32) is fixed on the lower end face of the sleeve (30). One end of the guide rod (34) is fixed on one of the guide plates (32), and the other end of the guide rod (34) passes through the other guide plate (32) and is slidably connected to it. A limiting end (35) is fixed on the other end of the guide rod (34). The spring (33) is fixed between the two guide plates (32).

5. A multichannel pipette tip, comprising a suction end (10) and the mounting structure described in any one of claims 1-4, characterized in that, The upper end of the liquid suction end (10) is fixedly provided with an installation end (11). Multiple circumferentially evenly distributed protrusions (12) are fixedly provided on the outer periphery of the installation end (11). The protrusions (12) are arranged parallel to the axial direction of the installation end (11). A slot (13) is provided on the protrusion (12). The retaining ring (40) in the installation structure can be fitted into the slot (13).

6. A multichannel pipette tip according to claim 5, characterized in that, The two retaining rings (40) located on both sides of the mounting end (11) can form a complete ring that fits into the slot (13).

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