Multi-channel pipettor adaptive to various pore plates

Abstract

The utility model provides a multichannel pipettor adapted to various pore plates, which relates to the technical field of pipettors, and comprises a pipetting main body, a suction nozzle module and a control module, the suction nozzle module is installed on the pipetting main body, the control module is arranged on the suction nozzle module, the suction nozzle module comprises an external shell, a connecting pipe, a suction nozzle fixing structure, a plurality of suction nozzles and a plurality of elastic pieces, the connecting pipe is used for being connected with a pipetting main body, the plurality of suction nozzles are connected with the connecting pipe through elastic pieces, the control module is connected with the suction nozzles and is used for controlling the telescopic action of the suction nozzles, and the suction nozzle fixing structure is used for fixing the suction nozzles. And the corresponding suction nozzles are adaptively adjusted to contract or release, and different types of suction nozzle modules do not need to be frequently replaced, so that the experiment efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of pipette technology, and in particular to a multi-channel pipette adapted to various well plates. Background Technology

[0002] Currently available multichannel pipettes have a fixed structure, which can only accommodate a fixed number of pipette tips and match well plates of fixed size and spacing. However, in practical applications, different sizes of pipette tips and well plates are used in different experiments or steps, which requires frequent replacement of different multichannel pipette tips, resulting in low experimental efficiency. To address the above-mentioned shortcomings, this application is proposed. Utility Model Content

[0003] The purpose of this invention is to provide a multi-channel pipette that is compatible with various well plates, can accommodate different numbers and types of pipette tips, and can match well plates of different sizes, thus solving the problem of low experimental efficiency caused by the need to frequently change and use different pipette tips during experiments.

[0004] To address the aforementioned problems, this utility model provides a multi-channel pipette adapted to various well plates, comprising a pipetting body, a tip module, and a control module. The tip module is mounted on the pipetting body, and the control module is disposed on the tip module. The tip module includes an outer shell, a connecting tube, a tip fixing structure, several tips, and several elastic elements. The connecting tube is used to connect to the pipetting body, and the tips are connected to the connecting tube through the elastic elements. The control module is connected to the tips and is used to control the extension and retraction of the tips. The control module can control the tips to switch between extended and retracted states. The tip fixing structure is used to fix the tips and keep them in the extended state.

[0005] According to one embodiment of the present invention, the nozzle fixing structure can also maintain the nozzle in a retracted state.

[0006] According to one embodiment of the present invention, the control module includes a button and a spring ball, a driving body is connected to the nozzle, the driving body is provided with a groove with an inclined surface, and the button is in contact with the inclined surface of the groove.

[0007] According to one embodiment of the present invention, the control module includes a knob and a pull cord, one end of which is wound around the knob and the other end is connected to the suction nozzle.

[0008] According to one embodiment of the present invention, the control module includes a telescopic module, which is connected to the suction nozzle.

[0009] According to one embodiment of the present invention, the elastic element is a spring.

[0010] According to one embodiment of the present invention, the suction nozzle fixing structure includes a pressure plate movably mounted on the outer housing.

[0011] According to one embodiment of the present invention, the suction nozzle is provided with one or more sets of fixing grooves.

[0012] According to one embodiment of the present invention, the suction nozzle module is provided with a light component, which is used to indicate the status of the suction nozzle.

[0013] According to one embodiment of the present invention, the suction nozzle is provided in eight groups, and all or part of the suction nozzle is connected to the elastic element.

[0014] The beneficial effect of this invention is that by setting a nozzle module with nozzle retraction and extension adjustment functions, when it is necessary to adapt to different numbers or types of pipette tips, it is only necessary to adjust the corresponding nozzle retraction or release accordingly, without having to frequently change different types of nozzle modules, thereby improving experimental efficiency. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 A schematic diagram of the overall structure of a multichannel pipette adapted to various well plates;

[0017] Figure 2 This is a schematic diagram of the internal structure of the suction module;

[0018] Figure 3 A schematic diagram of the retracted structure of one of the suction nozzles in the suction module;

[0019] Figure 4 This is a schematic diagram of the control module in Example 2;

[0020] Figure 5 This is a schematic diagram of the control module in Example 3;

[0021] Figure 6 This is a schematic diagram of the control module in Example 4. Detailed Implementation

[0022] The following description is only intended to disclose the present invention so that those skilled in the art can implement it. The embodiments in the following description are merely examples, and those skilled in the art will conceive of other obvious modifications. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other solutions that do not depart from the spirit and scope of the present invention.

[0023] Example 1:

[0024] A multichannel pipette adapted to various well plates, such as Figure 1 It includes a pipetting body 1, a nozzle module 2, and a control module 3.

[0025] The pipetting module 2 is mounted on the pipetting body 1, preferably with a detachable connection. The control module 3 is mounted on the pipetting module 2. The pipetting body 1 can be a pipette, a vacuum pump, or the like. The pipetting module 2 includes an outer housing 24, a connecting tube 21, a pipetting fixing structure 25, several pipetting nozzles 22, and several elastic elements 23.

[0026] The connecting tube 21 is used to connect to the suction nozzle of the pipetting body 1. Several suction nozzles 22 are connected to the connecting tube 21 through the elastic element 23. The suction nozzles 22 and the connecting tube 21 are connected in parallel. The suction nozzles 22 and the connecting tube 21 are nested or connected through a flexible tube. The elastic element 23 is used to achieve the telescopic effect. The elastic element 23 can be a spring or an elastic bellows.

[0027] In this embodiment, eight sets of suction nozzles 22 are provided, all of which are connected to the elastic element 23. In other embodiments, only some of the suction nozzles 22 may be connected to the elastic element 23 in a retractable manner.

[0028] The outer shell 24 is preferably assembled from two shells, upper and lower. The nozzle fixing structure 25 is a long strip-shaped pressure plate that is slidably installed on the outer shell 24. It slides towards the nozzle 22 to press against the nozzle 22 to achieve a fixing effect. The pressure plate is held in position by snap-fit ​​or damping.

[0029] Preferably, the nozzle 22 is provided with one or more sets of fixing grooves 27, which are used to embed pressure plates to achieve better fixing effect. When two sets of fixing grooves 27 are provided, the nozzle fixing structure 25 can engage with the nozzle 22 when it is in a retracted or extended state to achieve a holding state.

[0030] The control module 3 is connected to the nozzle 22 and is used to control the extension and retraction of the nozzle 22. The control module 3 can control the nozzle 22 to switch between the extended and retracted states.

[0031] In use, the initial state is an 8-channel pipette with 8 sets of nozzles 22 exposed, which can be connected to 8 pipette tips to achieve 8-well aspiration. It can be matched with a 96-well plate. If aspiration is needed for 4 large wells, the nozzles 22 can be retracted at intervals. At this time, the 4 exposed aspiration columns are used to connect the pipette tips for aspiration. When it is necessary to adapt to the pipette tip size, the nozzles 22 can be retracted according to the pipette tip size.

[0032] Example 2:

[0033] Based on Example 1, in this example, as Figure 4The control module 3 includes a button 32 and a spring ball 33. The button 32 is mounted on the outer housing 24. A drive body 31 is connected to the nozzle 22. The drive body 31 has a groove 34 with an inclined surface. The button 32 contacts the inclined surface of the groove 34. When the button 32 is pressed, the nozzle 22 retracts under the action of the inclined surface. The spring ball 33 is engaged in the hole on the outer housing 24, keeping the nozzle 22 in the retracted state. When the button 32 is pulled out, the nozzle 22 extends under the action of the elastic element 23.

[0034] Example 3:

[0035] Based on Example 1, such as Figure 5 The control module 3 includes a knob 35 and a pull cable 36. One end of the pull cable 36 is wrapped around the knob 35, and the other end is connected to the nozzle 22. By rotating the knob 35, the nozzle 22 is retracted by the pull cable 36. The state of the nozzle 22 can be maintained by using a pressure plate or by fixing the knob.

[0036] Example 4:

[0037] Based on Example 1, such as Figure 6 The control module 3 includes a telescopic module 37, which can be a telescopic component such as a cylinder or an electric actuator. A button for controlling the telescopic module 37 is provided on the outer housing 24.

[0038] This device can be powered by battery or AC power.

[0039] Example 5: Based on any of the above embodiments, the nozzle module 2 is provided with a light component 26. The light component 26 is used to indicate the state of the nozzle 22 by color or on / off state, respectively indicating two states of the nozzle 22. The light component 26 can be connected to the control module 3 and controlled by the control module 3. Alternatively, a sensor, protrusion structure, etc. can be provided on the nozzle 22. When the nozzle 22 reaches the set position, the light component 26 can be turned on by using a sensor such as a position sensor. Alternatively, the protrusion structure can be used to contact the switch of the light component 26 to achieve control.

[0040] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations and modifications.

Claims

1. A multichannel pipette adapted to various well plates, characterized in that: The device includes a pipetting body (1), a pipette module (2), and a control module (3). The pipette module (2) includes an outer shell (24), a connecting tube (21), a pipette fixing structure (25), several pipettes (22), and several elastic elements (23). The connecting tube (21) is used to connect to the pipetting body (1). Several pipettes (22) are connected to the connecting tube (21) through the elastic elements (23). The control module (3) is connected to the pipettes (22) and is used to control the extension and retraction of the pipettes (22). The control module (3) can control the pipettes (22) to switch between the extended and retracted states. The pipette fixing structure (25) is used to fix the pipettes (22) and keep them in the extended state.

2. The multichannel pipette adapted to various well plates according to claim 1, characterized in that: The nozzle fixing structure (25) can also keep the nozzle (22) in a retracted state.

3. The multichannel pipette adapted to various well plates according to claim 1, characterized in that: The control module (3) includes a button (32) and a spring ball (33). A drive body (31) is connected to the nozzle (22). A groove (34) with an inclined surface is provided in the drive body (31). The button (32) is in contact with the inclined surface of the groove (34).

4. The multichannel pipette adapted to various well plates according to claim 1, characterized in that: The control module (3) includes a knob (35) and a pull wire (36), one end of which is wrapped around the knob (35) and the other end is connected to the nozzle (22).

5. The multichannel pipette adapted to various well plates according to claim 1, characterized in that: The control module (3) includes a telescopic module (37), which is connected to the nozzle (22).

6. The multichannel pipette adapted to various well plates according to any one of claims 1-5, characterized in that: The elastic element (23) is a spring.

7. The multichannel pipette adapted to various well plates according to claim 2, characterized in that: The nozzle fixing structure (25) includes a pressure plate that is movably mounted on the outer housing (24).

8. The multichannel pipette adapted to various well plates according to claim 7, characterized in that: The suction nozzle (22) is provided with one or more sets of fixing grooves (27).

9. The multichannel pipette adapted to various well plates according to any one of claims 1-5, characterized in that: The nozzle module (2) is provided with a light component (26), which is used to indicate the status of the nozzle (22).

10. The multichannel pipette adapted to various well plates according to any one of claims 1-5, characterized in that: The suction nozzle (22) is provided in eight groups, and all or part of the suction nozzle (22) is connected to the elastic element (23).

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