Position adjustment device and pipetting equipment

Abstract

A position adjustment device and a pipetting apparatus are disclosed. The position adjustment device includes a pitch-changing assembly and multiple mounting plates, which respectively support multiple pipettes. The pitch-changing assembly includes a first adjustment part and multiple second adjustment parts, which abut against each other, causing the multiple second adjustment parts to move closer to or further away from each other. The multiple mounting plates are correspondingly connected to the multiple second adjustment parts to move together with them. In the above position adjustment device, the mounting plates can move together with the second adjustment parts to move the multiple pipettes closer to or further away from each other. The position adjustment device adjusts the distance between pipettes by pushing, and compared with the pitch-changing method in conventional technology, it does not require a connecting rod for transmission, thus simplifying the overall structure of the position adjustment device. The pipetting apparatus including the above position adjustment device has a simpler structure.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to position adjustment devices and pipetting equipment. Background Technology

[0002] A pipette, also called a pipette gun, is a device that quantitatively transfers a sample to be tested from one container to another within a certain volume range.

[0003] In traditional technology, automated pipetting equipment typically includes a pitch adjustment mechanism and multiple pipettes. The pitch adjustment mechanism is used to adjust the spacing between the multiple pipettes to accommodate containers of different sizes.

[0004] However, traditional pitch-changing mechanisms typically adjust the spacing between different pipettes using a lever assembly, resulting in a complex structure. Summary of the Invention

[0005] Therefore, it is necessary to provide a position adjustment device and a pipetting device to address the problem of how to simplify the complex method of adjusting the distance between the various pipettes in a pipetting device.

[0006] A position adjustment device, the position adjustment device comprising:

[0007] Multiple mounting plates are used to support multiple pipettes;

[0008] The pitch control assembly includes a first adjustment part and a plurality of second adjustment parts. The first adjustment part and the plurality of second adjustment parts abut against each other, causing the plurality of second adjustment parts to move toward or away from each other. The plurality of mounting plates are correspondingly connected to the plurality of second adjustment parts so as to move together with the second adjustment parts.

[0009] In one embodiment, the first adjustment part has a plurality of driving holes, and a plurality of second adjustment parts are correspondingly inserted through the plurality of driving holes and slide in cooperation with the hole walls of the driving holes.

[0010] In one embodiment, the extended axes of the plurality of drive holes intersect each other.

[0011] In one embodiment, the first adjustment part moves along a reference direction, and the spacing between the extension axes of the plurality of drive holes is the same in a direction perpendicular to the reference direction.

[0012] In one embodiment, the position adjustment device further includes a base plate and a guide rail disposed on the base plate, and the plurality of mounting plates are slidably engaged with the guide rail.

[0013] In one embodiment, the position adjustment device further includes a plurality of telescopic components, which are correspondingly disposed on a plurality of mounting plates and elastically connected to a plurality of pipettes, thereby enabling the pipettes to move elastically.

[0014] In one embodiment, the telescopic assembly includes an elastic element, one end of which abuts against the mounting plate, and the other end of which is used to push against the pipette.

[0015] In one embodiment, the telescopic assembly further includes a slide rail and a slide table that slidably engages with the slide rail. The slide table is used to place the pipette. One end of the elastic member abuts against the mounting plate, and the other end of the elastic member elastically abuts against the slide table. The slide table is slidable in the direction that compresses the elastic member.

[0016] In one embodiment, the telescopic assembly further includes a limiting member disposed on the mounting plate, the limiting member abutting against the end of the slide away from the elastic member.

[0017] In one embodiment, the second adjustment member is rotatably connected to the mounting plate.

[0018] A pipetting device, the pipetting device comprising:

[0019] The position adjustment device described in any one of the above embodiments; and

[0020] Multiple pipettes are mounted on the position adjustment device.

[0021] In the aforementioned position adjustment device, since the mounting plates can move together with the second adjustment units, multiple mounting plates can move closer to or further away from each other with the second adjustment units. Since the mounting plates support pipettes, multiple pipettes can move closer to or further away from each other with the mounting plates. In other words, by having the first adjustment unit push against multiple second adjustment units, multiple pipettes can be indirectly moved closer to or further away from each other to adjust the spacing between pipettes. Thus, the pipetting device can be compatible with consumables with different spacing requirements. Furthermore, the multiple second adjustment units can move closer to or further away from each other simply through the pushing action of the first adjustment unit. In this embodiment, adjusting the spacing between pipettes by pushing eliminates the need for connecting rods for transmission compared to the variable-pitch method in conventional technology, thus simplifying the overall structure of the position adjustment device. Attached Figure Description

[0022] Figure 1 This is an isometric schematic diagram of a pipetting device provided in one embodiment;

[0023] Figure 2 for Figure 1A side view of the position adjustment device in the pipetting apparatus shown;

[0024] Figure 3 for Figure 1 Axonometric view of some structures in the pipetting device shown;

[0025] Figure 4 This is a schematic diagram of the structure of the first adjustment part, which includes multiple drive holes.

[0026] Reference numerals: 10, pipetting device; 100, position adjustment device; 110, mounting plate; 1200, pitch adjustment assembly; 1210, first adjustment part; 1211, drive hole; 1211a, first contact surface; 1211b, second contact surface; 1220, second adjustment part; 1230, drive component; 1231, motor; 1232, lead screw; 130, telescopic assembly; 131, elastic element; 132, slide rail; 133, slide table; 134, limiting element; 135, upright plate; 140, base plate; 150, guide rail; 200, pipette; 300, needle. Detailed Implementation

[0027] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not 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 invention.

[0029] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0033] See Figure 1 , Figure 1 A schematic axonometric view of a pipetting device according to an embodiment of the present invention is shown. The pipetting device can simultaneously transfer samples to be tested from multiple consumables to other containers. An embodiment of the present invention provides a pipetting device 10 including multiple pipettes 200 and a position adjustment device 100. The multiple pipettes 200 are all disposed on the position adjustment device 100, which allows adjustment of the spacing between the individual pipettes 200. When the pipetting device 10 needs to be applied to consumables with different spacing, the spacing between the individual pipettes 200 can be adjusted by the position adjustment device 100, so that the multiple pipettes 200 can be applied to consumables with different spacing.

[0034] Please see Figure 1 and Figure 2In one embodiment, the position adjustment device 100 includes a pitch-changing assembly 1200 and a plurality of mounting plates 110. The plurality of mounting plates 110 are used to correspondingly support a plurality of pipettes 200. The pitch-changing assembly 1200 includes a first adjustment portion 1210 and a plurality of second adjustment portions 1220. The first adjustment portion 1210 abuts against the plurality of second adjustment portions 1220, causing the plurality of second adjustment portions 1220 to move toward or away from each other. The plurality of mounting plates 110 are correspondingly connected to the plurality of second adjustment portions 1220 to move together with the second adjustment portions 1220.

[0035] In the aforementioned position adjustment device 100, since the mounting plate 110 can move together with the second adjustment section 1220, the multiple mounting plates 110 can move closer to or further away from each other along with the second adjustment section 1220. Since the mounting plate 110 is used to support the pipettes 200, the multiple pipettes 200 can move closer to or further away from each other along with the mounting plate 110. In other words, by having the first adjustment section 1210 push against the multiple second adjustment sections 1220, the multiple pipettes 200 can be indirectly moved closer to or further away from each other to adjust the spacing between the individual pipettes 200. Thus, the pipetting device 10 can be compatible with consumables used for different spacings.

[0036] Furthermore, the multiple second adjustment parts 1220 can move closer to or further away from each other simply by being pushed by the first adjustment part 1210. On the one hand, in this embodiment, the distance between the pipettes 200 is adjusted by pushing, which, compared to the variable pitch method in conventional technology, eliminates the need for a connecting rod for transmission, thus simplifying the overall structure of the position adjustment device 100. On the other hand, in this embodiment, at least two second adjustment parts 1220 can be pushed closer to or further away from each other by a single first adjustment part 1210. Compared to driving each pipette 200 one-to-one with a separate power source, this arrangement reduces the power source required for the position adjustment device 100, further simplifying the overall structure of the position adjustment device 100 and reducing the space occupied by the variable pitch assembly 1200, resulting in a smaller overall size of the position adjustment device 100.

[0037] Please see Figure 2 and combined Figure 4In one embodiment, the first adjustment part 1210 has a plurality of driving holes 1211, and a plurality of second adjustment parts 1220 are correspondingly disposed through the plurality of driving holes 1211 and slide in cooperation with the hole walls of the driving holes 1211. In this embodiment, this configuration allows the first adjustment part 1210 to drive the plurality of second adjustment parts 1220 to move synchronously through the hole walls of the plurality of driving holes 1211, meaning the first adjustment part 1210 can simultaneously drive the plurality of second adjustment parts 1220 to move through the plurality of driving holes 1211. This simplifies the method of driving the pipette to change its pitch, eliminating the need for complex structures to adjust the spacing between the pipettes 200. Please refer to the extension axes of the plurality of driving holes 1211. Figure 4 For directions U1-U5, see the reference direction above. Figure 4 The standard number is V.

[0038] Please continue reading. Figure 2 Specifically, the drive hole 1211 may include a first abutting surface 1211a and a second abutting surface 1211b in its hole wall, with the first abutting surface 1211a and the second abutting surface 1211b facing each other. It is understood that since the second adjusting part 1220 passes through the drive hole 1211, both the first abutting surface 1211a and the second abutting surface 1211b can abut against the second adjusting part 1220. Therefore, the second adjusting part 1220 can be moved in different directions by the first abutting surface 1211a and the second abutting surface 1211b respectively. For example, the second adjusting part 1220 can be moved closer to another second adjusting part 1220 by the first abutting surface 1211a; or the second adjusting part 1220 can be moved away from another second adjusting part 1220 by the second abutting surface 1211b.

[0039] In one embodiment, the second adjusting part 1220 is rotatably connected to the mounting plate 110. That is, the second adjusting part 1220 can rotate within the drive hole 1211. Thus, when the drive hole 1211 pushes against the second adjusting part 1220, the second adjusting part 1220 can roll relative to the wall of the drive hole 1211. In this way, rolling friction replaces sliding friction, making the movement of the first adjusting part 1210 driving the second adjusting part 1220 smoother, while reducing frictional wear between the first adjusting part 1210 and the second adjusting part 1220.

[0040] Please see Figure 2 In one embodiment, the extending axes of the plurality of drive holes 1211 intersect each other. That is, the plurality of drive holes 1211 are not arranged in parallel, so that the spacing between each second adjustment part 1220 changes when it moves along the drive holes 1211.

[0041] Specifically, taking an example where there are two second adjustment parts 1220, the first adjustment part 1210 has two driving holes 1211, which extend along the first axis and the second axis, respectively. The first axis and the second axis intersect. It can be understood that the second adjustment part 1220 passes through the driving holes 1211, so the wall of the driving hole 1211 not only serves a driving function, but also limits and guides the movement of the second adjustment part 1220. In other words, the extending direction of the driving hole 1211 correspondingly represents the movement trajectory of the second adjustment part 1220 passing through the driving hole 1211. (See the first axis for details.) Figure 2 For reference number K, see the second axis mentioned above. Figure 2 For the intersection of the first and second axes, refer to the section marked M. Figure 2 The standard number is N.

[0042] Therefore, combined Figure 2 When the two second adjustment parts 1220 move along the wall of their respective driving holes 1211 towards the intersection of the first and second axes, the distance between them decreases. Conversely, when the two second adjustment parts 1220 move away from the intersection of the first and second axes along the wall of their respective driving holes 1211, the distance between them increases. It is understood that the movement of the second adjustment parts 1220 along the driving holes 1211 is used here only for ease of understanding and explanation. In reality, the two second adjustment parts 1220 do not actively move within their respective driving holes 1211; rather, their movement is driven by the wall of their respective driving holes 1211.

[0043] Since the first axis intersects with the second axis, the movement trajectories of the two second adjustment parts located in different drive holes 1211 are obviously different. Therefore, as long as the first adjustment part 1210 moves relative to the second adjustment part 1220, the hole walls of the two drive holes 1211 will push against their corresponding second adjustment parts 1220 in different directions to change the distance between the two second adjustment parts 1220.

[0044] It is understandable that the above explanation uses the number of drive holes 1211 as two specific examples. The same principle applies when there are multiple drive holes 1211, so it will not be repeated here.

[0045] Please see Figure 2 and Figure 4In one embodiment, the first adjustment part 1210 moves along a reference direction. In a direction perpendicular to the reference direction, the distance between the extension axes of the plurality of drive holes 1211 is the same. It is understood that since the extension axis of each drive hole 1211 represents the movement trajectory of the second adjustment part 1220 passing through that drive hole 1211, by ensuring that the distance between the extension axes of the plurality of drive holes 1211 is the same in a direction perpendicular to the reference direction, the intervals between each second adjustment part 1220 during movement are equal. It is understood that the spacing between different types of consumables varies, but is generally uniform. In this embodiment, regardless of how the spacing between the pipettes 200 is adjusted, the spacing between each pipette 200 is always equal to ensure that the pipetting device 10 can adapt to different consumables after the spacing is adjusted.

[0046] In some embodiments, the drive hole 1211 can be a blind hole.

[0047] In one embodiment, the second adjustment portion 1220 can be a uniform columnar structure, for example, the second adjustment portion 1220 can be a cylindrical structure, or the second adjustment portion 1220 can be a prismatic structure adapted to the driving hole 1211.

[0048] Please continue reading. Figure 2 In one embodiment, the position adjustment device 100 further includes a substrate 140 and a guide rail 150 disposed on the substrate 140, with multiple mounting plates 110 slidably engaged with the guide rail 150. Thus, the guide rail 150 restricts the direction of movement of the multiple mounting plates 110, that is, limits the direction of movement of the second adjustment part 1220, causing the second adjustment part 1220 to move closer to or further away from each other only in a predictable direction. This arrangement prevents the second adjustment part 1220 from shifting in other directions, thus avoiding alignment errors when the pipette 200 picks up the sample to be tested.

[0049] It should be noted that the second adjustment part 1220 is slidably engaged with the guide rail 150, which supports the weight of the second adjustment part 1220. In other words, the second adjustment part 1220 will not slide in the drive hole 1211 due to its own weight. Furthermore, the second adjustment part 1220 can be stably positioned at any location within the drive hole 1211 to meet the spacing adjustment requirements of the pipette 200.

[0050] Please see Figure 2 In one embodiment, the extension direction of the guide rail 150 may be perpendicular to the reference direction.

[0051] Please continue reading. Figure 2In one embodiment, the pitch-changing assembly 1200 further includes a drive member 1230. The drive member 1230 is connected to the first adjustment part 1210 and is used to drive the first adjustment part 1210 to move along a reference direction. When the first adjustment part 1210 moves along the reference direction, the spacing between each second adjustment part 1220 can be adjusted through the drive hole 1211, thereby indirectly adjusting the spacing between each pipette 200.

[0052] The driving component 1230 may specifically include a motor 1231 and a lead screw 1232. The motor 1231 is connected to the lead screw 1232 to drive the lead screw 1232 to rotate. The lead screw 1232 is connected to the first adjustment part 1210. The lead screw 1232 can convert the rotational motion of the motor 1231 into linear motion.

[0053] Of course, in some embodiments, the drive unit 1230 can also be set as other linear actuators, such as cylinders, hydraulic cylinders, electric push rods, etc. The output end of the linear actuator is connected to the first adjustment unit 1210, and the first adjustment unit 1210, in conjunction with the second adjustment unit 1220, can convert the linear motion of the linear actuator into the variable pitch motion of the pipette 200.

[0054] Please see Figure 2 and Figure 3 In one embodiment, the position adjustment device 100 further includes a plurality of telescopic components 130, which are correspondingly disposed on a plurality of mounting plates 110 and elastically connected to a plurality of pipettes 200, thereby enabling the pipettes 200 to move elastically. In other words, the telescopic components 130 are elastically connected between the mounting plate 110 and the pipettes 200 supported by the mounting plate 110, so that the pipettes 200 can undergo elastic telescopic movement.

[0055] Understandably, pipette 200 is typically used in conjunction with needle 300, which provides the cavity for receiving the sample to be tested. Please refer to [link / reference]. Figure 1 Specifically, in actual use, the needle 300 needs to be fitted onto the end of the pipette 200. The pipette 200 provides negative pressure to quantitatively aspirate the sample to be tested into the needle 300. It should be understood that the sample is only aspirated into the needle 300 and does not enter the pipette 200 itself. Thus, by using the needle 300 to temporarily store the sample instead of the pipette 200, the pipette 200 itself does not need to come into contact with the sample. This avoids contamination of the pipette 200 by the sample. In other words, with this configuration, the pipette 200 can be reused repeatedly. In contrast, the needle 300 is typically for single use only.

[0056] In other words, the pipette 200 requires continuous needle replacement during actual use. Therefore, by incorporating the telescopic component 130, the pipette 200 can move elastically. This allows the pipette 200 to adaptively extend and retract when there is a slight error in the insertion direction between multiple pipettes 200 and the needle 300, thus compensating for the error and ensuring a stable connection between each pipette 200 and the needle 300. In other words, by incorporating multiple telescopic components 130 to allow multiple pipettes 200 to move elastically, multiple pipettes 200 can simultaneously and stably replace the needle 300. This design also enables the pipetting device 10 to better achieve automated pipetting.

[0057] Please see Figure 3 In one embodiment, the telescopic assembly 130 includes a slide rail 132, a slide table 133, and an elastic member 131. One end of the elastic member 131 abuts against the mounting plate 110, and the other end of the elastic member 131 is used to push the pipette 200. Thus, the elastic member 131 allows the pipette 200 to move elastically relative to the mounting plate 110 to stably engage with the needle 300. It is understood that the pipette 200 can move relative to the mounting plate 110 in a direction that compresses the elastic member 131.

[0058] In one embodiment, the force required for the pipette 200 to compress and deform the elastic element 131 is greater than the interaction force when the pipette 200 and the needle 300 are inserted and engaged. This arrangement prevents the elastic force of the elastic element 131 from being too small, which could cause instability in the position of the pipette 200.

[0059] Please see Figure 3 In one embodiment, the slide 133 is slidably engaged with the slide rail 132. The slide 133 is used to support the pipette 200, and thus, by restricting the movement direction of the slide 133 by the slide rail 132, the movement trajectory of the pipette 200 can be limited.

[0060] Specifically, one end of the elastic element 131 abuts against the mounting plate 110, and the other end of the elastic element 131 elastically abuts against the slide 133, which can slide in the direction of compressing the elastic element 131. In this way, the pipette 200 can also slide elastically, so as to ensure that when multiple pipettes 200 are replaced with needles 300 at the same time, the insertion and engagement of each pipette 200 with the needle 300 is more stable.

[0061] Please see Figure 3In one embodiment, the telescopic assembly 130 further includes a limiting member 134 disposed on the mounting plate 110. The limiting member 134 abuts against the end of the slide 133 away from the elastic member 131. The limiting member 134 can limit the position of the slide 133. Specifically, the slide 133 can remain abutted against the limiting member 134 under the elastic push of the elastic member 131. The pipette 200 can separate from the limiting member 134 under the reaction force of the needle 300 and move in the direction of compressing the elastic member 131. In this embodiment, the elastic member 131 can specifically be a compression spring.

[0062] Of course, in some embodiments, the specific location of the elastic element 131 can be adjusted so that the elastic element 131 is a tension spring or the like. The way the elastic element 131 provides elasticity can be set according to actual needs, which will not be elaborated here.

[0063] Please see Figure 3 In one embodiment, the telescopic assembly 130 further includes a vertical plate 135, which is fixedly connected to the mounting plate 110. One end of the elastic member 131 abuts against the vertical plate 135, and the other end of the elastic member 131 abuts against the slide table 133. That is, in this embodiment, the elastic member 131 abuts against the mounting plate 110 via the vertical plate 135.

[0064] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A position adjusting device, characterized by, The position adjustment device includes: Multiple mounting plates are used to support multiple pipettes; The pitch control assembly includes a first adjustment part and a plurality of second adjustment parts. The first adjustment part and the plurality of second adjustment parts abut against each other, causing the plurality of second adjustment parts to move toward or away from each other. The plurality of mounting plates are correspondingly connected to the plurality of second adjustment parts so as to move together with the second adjustment parts. The position adjustment device further includes a telescopic component, a base plate, and a guide rail disposed on the base plate. Multiple mounting plates are slidably engaged with the guide rail. Multiple telescopic components are correspondingly disposed on multiple mounting plates and elastically connected to multiple pipettes, enabling the pipettes to move elastically. Each telescopic component includes an elastic element, a slide rail, and a slide table slidably engaged with the slide rail. The slide table is used to place the pipette. One end of the elastic element abuts against the mounting plate, and the other end of the elastic element elastically abuts against the slide table. The slide table can slide in the direction of compressing the elastic element.

2. The position adjustment device according to claim 1, characterized in that The first adjustment part has multiple driving holes, and multiple second adjustment parts are correspondingly inserted through the multiple driving holes and slide in cooperation with the hole walls of the driving holes.

3. The position adjustment device according to claim 2, characterized in that The extended axes of the plurality of drive holes intersect each other.

4. The position adjustment device according to claim 2, characterized in that The first adjustment part moves along the reference direction, and the spacing between the extension axes of the plurality of drive holes is the same in the direction perpendicular to the reference direction.

5. The position adjustment device according to claim 4, characterized in that The extension direction of the guide rail is perpendicular to the reference direction.

6. The position adjustment device of claim 1, wherein The force required for the pipette to compress the elastic element is greater than the interaction force when the pipette is used to engage with the needle.

7. The position adjustment device of claim 1, wherein The second adjustment section is constructed as a uniform columnar structure.

8. The position adjustment device according to claim 1, characterized in that, The telescopic assembly also includes a vertical plate, which is fixedly connected to the mounting plate. One end of the elastic element abuts against the vertical plate, and the other end of the elastic element abuts against the slide table.

9. The position adjustment device according to claim 8, characterized in that, The telescopic assembly also includes a limiting member, which is disposed on the mounting plate and abuts against the end of the slide away from the elastic member.

10. The position adjustment device according to claim 1, characterized in that, The second adjusting member is rotatably connected to the mounting plate.

11. A pipetting device, characterized in that, The pipetting device includes: The position adjustment device as described in any one of claims 1 to 10; and Multiple pipettes are mounted on the position adjustment device.

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