Single-channel pipettor

Abstract

The utility model discloses a single-channel pipettor which comprises a main body provided with a first end and a second end which are opposite to each other; the suction nozzle is arranged at the first end of the main body, and the suction nozzle is used for being inserted into a centrifugal tube to suck or inject liquid; the pipetting control knob is arranged at the second end of the main body, and the pipetting control knob is used for adjusting the volume of the sucked liquid; the cover opening structure is arranged on the main body, and the cover opening structure is used for opening a tube cover of the centrifugal tube. Due to the fact that the single-channel pipettor is provided with the cover opening structure, when the pipettor is operated to sample from the centrifugal tube, the pipettor does not need to be put down to independently open the centrifugal tube, the tube cover of the centrifugal tube can be opened through the cover opening structure on the pipettor, operation steps are simplified, the difficulty of liquid suction is reduced, and the operation burden of experimenters is greatly relieved. Moreover, the tube cover of the centrifugal tube is opened through the cover opening structure, so that an experimenter is prevented from being in direct contact with the tube cover, and a sample in the tube can be prevented from being polluted.

Description

Technical Field

[0001] The utility model relates to the technical field of biochemical experimental equipment, in particular to a single-channel pipette. Background Art

[0002] A pipette, also known as a pipette gun, is a measuring tool that transfers liquid from one container (mostly a microcentrifuge tube, specifications: 0.2ml, 0.6ml, 1.5ml) to another container within a certain range. It is mainly divided into single-channel pipettes and multi-channel pipettes.

[0003] When using a pipette, generally open the cap of the microcentrifuge tube first, and then use a single-channel pipette to transfer the required solution.

[0004] The main problems with existing pipettes are: when opening the microcentrifuge tube cover, it is necessary to put down the single-channel pipette and operate with both hands, which is cumbersome; if operated with one hand, the fingers are easily fatigued after measuring and opening the cover multiple times, especially for 0.6ml and 0.2ml microcentrifuge tubes, which are difficult to operate with one hand, and the fingers are easy to contaminate the microcentrifuge tube cover, thereby contaminating the sample in the tube. Utility Model Content

[0005] The utility model provides a single-channel liquid transfer device, which is used to solve the problems of troublesome liquid extraction from a centrifuge tube and easy contamination of samples.

[0006] In one embodiment, a single-channel pipette is provided, comprising:

[0007] a body having opposing first and second ends;

[0008] A suction nozzle, the suction nozzle is arranged at the first end of the main body, and the suction nozzle is used to be inserted into the centrifuge tube to suck or inject liquid;

[0009] a pipetting control knob, the pipetting control knob being disposed at the second end of the main body and being used to adjust the volume of the aspirated liquid; and

[0010] A cover opening structure is arranged on the main body and is used to open the tube cover of the centrifuge tube.

[0011] In one embodiment, the cover opening structure is a circular ring structure, and the circular ring structure is used to be sleeved on the tube cover of the centrifuge tube to open the tube cover of the centrifuge tube.

[0012] In one embodiment, the cover opening structure is an inner diameter adjustable structure, and the cover opening structure can be adjusted to inner diameters of different specifications.

[0013] In one embodiment, the opening cover structure can be adjusted to a first inner diameter, a second inner diameter or a third inner diameter, the first inner diameter is adapted to the tube cover of a 0.2ml centrifuge tube, the second inner diameter is adapted to the tube cover of a 0.6ml centrifuge tube, and the third inner diameter is adapted to the tube cover of a 1.5ml centrifuge tube.

[0014] In one embodiment, the opening cover structure includes a hard and deformable steel rope, one end of the steel rope is provided with a limiting hole, and the end of the steel rope away from the limiting hole is provided with a plurality of clamping parts, and the plurality of clamping parts are respectively connected to the limiting holes to adjust inner diameters of different specifications.

[0015] In one embodiment, a flexible connection structure is provided on the main body, and the opening structure is connected to the main body through the flexible connection structure.

[0016] In one embodiment, the main body is provided with a plurality of cover-opening structures, and the plurality of cover-opening structures have different inner diameters and are used to open centrifuge tubes of different specifications; or, the cover-opening structures are detachably connected to the main body.

[0017] In one embodiment, a hanging portion is provided on the side surface of the second end of the main body, and the opening cover structure is arranged on the hanging portion.

[0018] In one embodiment, the hanging portion protrudes from the main body, the hanging portion has a first end and a second end opposite to each other, the first end of the hanging portion is connected to the main body, and the opening cover structure is arranged at the second end of the hanging portion.

[0019] In one embodiment, a sleeve is further included, and the sleeve is detachably mounted on the suction nozzle.

[0020] According to the single-channel pipette of the above embodiment, since the single-channel pipette is provided with a cover opening structure, when operating the pipette to take samples from a centrifuge tube, there is no need to put down the pipette and separately operate to open the centrifuge tube. The cover of the centrifuge tube can be opened by the cover opening structure on the pipette, which simplifies the operation steps, reduces the difficulty of aspirating, and thus greatly reduces the operating burden of the experimenter; and, by opening the cover of the centrifuge tube by the cover opening structure, the experimenter avoids direct contact with the tube cover, thereby avoiding contamination of the sample in the tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a single-channel pipette in an embodiment;

[0022] Figure 2 A schematic diagram of the structure of a single-channel pipette opening a tube cover of a centrifuge tube in an embodiment;

[0023] Figure 3 A schematic diagram of the structure of a single-channel pipette in an embodiment;

[0024] Figure 4 This is a front structural schematic diagram of a single-channel pipette placed on a shelf in an embodiment;

[0025] Figure 5 A schematic diagram of the back structure of a single-channel pipette placed on a rack in an embodiment;

[0026] The reference numerals are as follows:

[0027] 1-main body, 11-hanging part, 2-nozzle, 3-pipette control knob, 4-opening structure, 5-flexible connection structure, 6-sleeve, 61-flexible connection part, 7-centrifuge tube, 71-tube cover, 8-storage rack. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0029] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0030] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0031] In one embodiment, a single-channel pipette is provided, and the single-channel pipette is used to transfer liquids, especially to transfer liquids in microcentrifuge tubes, for example, to transfer liquids in microcentrifuge tubes of three specifications: 0.2ml, 0.6ml and 1.5ml. The single-channel pipette is provided with an opening structure, and the opening structure is adapted to the tube cover of the microcentrifuge tube, so that the single-channel pipette can open the tube cover of the microcentrifuge tube, reduce the burden of liquid collection, and improve the efficiency of liquid collection, and can also avoid the hand from touching the tube cover when opening the cover, thereby avoiding contamination of the sample.

[0032] Please refer to Figure 1 and Figure 2 In this embodiment, the single-channel pipette mainly includes a main body 1, a nozzle 2, a pipetting control knob 3 and a cover opening structure 4.

[0033] The main body 1 is a long cylindrical structure, and has a liquid absorption cavity and other structures inside the main body 1. The outer side of the main body 1 can be used for holding with one hand. The main body 1 has a first end and a second end relative to each other, such as Figure 1 As shown, the lower end of the main body 1 is the first end, and the upper end of the main body 1 is the second end.

[0034] The main body 1 may be made of plastic, and the outer surface of the main body 1 may be provided with anti-slip textures so that the experimenter can hold the main body 1 firmly.

[0035] The suction nozzle 2 is a long pointed structure, and the suction nozzle 2 is arranged at the first end of the main body 1. One end of the suction nozzle 2 is connected to the liquid suction cavity in the main body 1, and the other end of the suction nozzle 2 is used to be inserted into the centrifuge tube 7 to absorb liquid or discharge liquid.

[0036] The suction nozzle 2 is made of transparent plastic material and has a transparent structure, which is convenient for experimenters to observe the suction and discharge of liquid, so as to improve the accuracy of transferring liquid.

[0037] The pipetting control knob 3 is arranged at the second end of the main body 1. The pipetting control knob 3 is connected to the piston in the liquid aspiration chamber through a screw structure. The pipetting control knob 3 can drive the piston in the liquid chamber to move by rotating to achieve the absorption and discharge of a trace liquid volume.

[0038] In other embodiments, an electric drive assembly may be provided in the main body 1, the electric drive assembly is connected to the piston in the liquid transfer chamber, and the electric drive assembly is used to automatically drive the nozzle 2 to suck and discharge liquid. The outer surface of the main body 1 may also be provided with electric suction and electric discharge buttons, and the experimenter can realize automatic electric suction and discharge through the electric suction and electric discharge buttons.

[0039] In this embodiment, the cover opening structure 4 is arranged at the second end of the main body 1, the cover opening structure 4 is staggered from the gripping part of the main body 1, and the cover opening structure 4 does not block the field of view of the single-channel pipette for taking and discharging liquid. The cover opening structure 4 can be a circular ring structure, which is used to be sleeved on the tube cover 71 of the centrifuge tube 7 and protrudes radially from the edge of the centrifuge tube 7 body. The cover opening structure 4 can be used to be sleeved on the tube cover 71 of the centrifuge tube 7, and the tube cover 71 can be opened by pulling hard.

[0040] The annular structure of the opening cover structure 4 is adapted to the tube cover 71 of the centrifuge tube 7, so that the opening cover structure 4 can be sleeved on the tube cover 71 of the centrifuge tube 7 to open the tube cover 71 of the centrifuge tube 7. For example, the inner diameter of the annular structure of the opening cover structure 4 is slightly larger than the outer diameter of the tube cover 71 of the microcentrifuge tube 7 of 0.2ml specification, so that the opening cover structure 4 can open the tube cover 71 of the microcentrifuge tube 7 of 0.2ml specification; or the inner diameter of the annular structure of the opening cover structure 4 is slightly larger than the outer diameter of the tube cover 71 of the microcentrifuge tube 7 of 0.6ml specification, so that the opening cover structure 4 can open the tube cover 71 of the microcentrifuge tube 7 of 0.6ml specification; or the inner diameter of the annular structure of the opening cover structure 4 is slightly larger than the outer diameter of the tube cover 71 of the microcentrifuge tube 7 of 1.5ml specification, so that the opening cover structure 4 can open the tube cover 71 of the microcentrifuge tube 7 of 1.5ml specification.

[0041] The inner diameter of the cover opening structure 4 is set to correspond to the tube cover 71 of a microcentrifuge tube 7 of a certain specification with the highest pipetting frequency, and other microcentrifuge tubes 7 of uncommon specifications can be opened by both hands.

[0042] In this embodiment, the cover opening structure 4 is a hard structure, for example, the cover opening structure 4 is a metal ring, so that the cover opening structure 4 can withstand a certain pulling force to open the tube cover 71 of the microcentrifuge tube 7.

[0043] In other embodiments, the cover opening structure 4 may also be other structures. For example, the cover opening structure 4 is an elliptical ring structure. The elliptical ring structure may also be sleeved on the tube cover 71 of the microcentrifuge tube 7 to open the tube cover 71 of the microcentrifuge tube 7 .

[0044] The single-channel pipette of the present embodiment is provided with a cover-opening structure 4, so that when operating the pipette to take samples from a centrifuge tube 7, especially when taking samples from a microcentrifuge tube 7, there is no need to put down the pipette to separately operate to open the centrifuge tube 7. The tube cover 71 of the centrifuge tube 7 can be opened by the cover-opening structure 4 on the pipette, which simplifies the operation steps, reduces the difficulty of aspirating, and thus greatly reduces the operating burden of the experimenter; and, by opening the tube cover 71 of the centrifuge tube 7 by the cover-opening structure 4, the experimenter is prevented from directly contacting the tube cover 71, thereby avoiding contamination of the sample in the tube.

[0045] In one embodiment, the opening cover structure 4 can be a structure with an adjustable inner diameter. The opening cover structure 4 can change the inner diameter by adjustment, that is, it can be adjusted to inner diameters of different specifications, so that the opening cover structure 4 can be adapted to the tube caps 71 of microcentrifuge tubes 7 of different specifications.

[0046] For example, the opening structure 4 can be adjusted to the first inner diameter, the second inner diameter or the third inner diameter, the size of the first inner diameter is adapted to the tube cover 71 of the centrifuge tube 7 of 0.2ml specification, the size of the second inner diameter is adapted to the tube cover 71 of the centrifuge tube 7 of 0.6ml specification, and the size of the third inner diameter is adapted to the tube cover 71 of the centrifuge tube 7 of 1.5ml specification. In other words, the opening structure 4 can open the tube covers 71 of the microcentrifuge tubes 7 of three specifications of 0.2ml, 0.6ml and 1.5ml by adjusting the inner diameter. Of course, the inner diameter of the opening structure 4 can also be adjusted to other sizes to open the tube covers 71 of microcentrifuge tubes 7 of other specifications.

[0047] The opening structure 4 may include a hard and deformable steel rope, which is installed on the main body 1. A limiting hole is provided at one end of the steel rope, and the other end of the steel rope is inserted into the limiting hole. The steel rope forms a circular structure. A plurality of clamping parts are provided at one end of the steel rope inserted into the limiting hole. The plurality of clamping parts can be connected with the limiting holes respectively to adjust the inner diameter of the circular structure formed by the steel rope, that is, the inner diameters of different specifications of the opening structure 4 can be adjusted. For example, the steel rope is provided with three limiting parts along the length direction of the steel rope, and the three limiting parts are respectively connected with the limiting holes to form the first inner diameter, the second inner diameter or the third inner diameter, so as to realize opening the tube cover 71 of the microcentrifuge tube 7 of three specifications of 0.2ml, 0.6ml and 1.5ml.

[0048] The cover opening structure 4 is configured as a structure with an adjustable inner diameter, so that the channel pipette can open the tube covers 71 of microcentrifuge tubes 7 of different specifications through the cover opening structure 4, thereby expanding more usage scenarios and making pipetting operations more convenient for experimenters.

[0049] In one embodiment, the cover-opening structure 4 can also be other structures with adjustable inner diameter. For example, the cover-opening structure 4 is a plastic metal rope or a hard plastic strip. The experimenter can directly pinch the cover-opening structure 4 into the required inner diameter. The experimenter can also first put the cover-opening structure 4 on the tube cover 71 to be opened, and then pinch it into the required size, and then directly open the tube cover 71 of the corresponding specification; open the tube covers 71 of other specifications and then adjust them first.

[0050] In one embodiment, a plurality of opening lid structures 4 with different inner diameters may be provided on the main body 1. For example, three opening lid structures 4 are provided. The three opening lid structures 4 respectively have the first inner diameter, the second inner diameter and the third inner diameter mentioned above. The three opening lid structures 4 correspond one-to-one to the tube covers 71 of three microcentrifuge tubes 7 with three specifications of 0.2ml, 0.6ml and 1.5ml. The experimenter can select the corresponding opening lid structure 4 for use according to the tube cover 71 that needs to be opened.

[0051] In order to facilitate the experimenter to quickly select the correct opening structure 4 for use, the multiple opening structures 4 can be provided with different colors, or directly marked with the size or logo of the centrifuge tube 7 of the corresponding specification.

[0052] In one embodiment, the cover opening structure 4 can be detachably connected to the main body 1 , and the experimenter can select the corresponding cover opening structure 4 to be installed on the main body 1 according to the tube cover 71 to be opened, so as to open the corresponding tube cover 71 .

[0053] The opening cover structure 4 can be detachably connected to the main body 1 by means of threaded connection, snap connection, etc.

[0054] Please refer to Figure 3 In one embodiment, a flexible connection structure 5 can be provided on the main body 1. The flexible connection structure 5 can be a structure such as a flexible rope. The opening structure 4 is installed on the main body 1 through the flexible connection structure 5. The flexible connection structure 5 can be rotated and bent, so that when the experimenter uses the opening structure 4 to open the cover, the opening structure 4 can be easily moved to align with the tube cover 71 of the microcentrifuge tube 7.

[0055] In order to prevent the cover opening structure 4 from being too flexible, the flexible connection structure 5 can be set to a shorter structure so that the cover opening structure 4 will not swing around.

[0056] Please refer to Figure 4 and Figure 5 In one embodiment, a hanging portion 11 is provided on the outer side of the second end of the main body 1, and when the single-channel pipette is not in use, the single-channel pipette can be hung on the rack 8 through the hanging portion 11. The opening cover structure 4 can be arranged on the hanging portion 11, so that the opening cover structure 4 can avoid the gripping surface of the main body 1.

[0057] The hanging portion 11 is a structure protruding from the main body 1 . The hanging portion 11 and the main body 1 may be an integrated structure. The hanging portion 11 may also be fixed to the main body 1 by means of a snap connection, a threaded connection, or the like.

[0058] The hanging portion 11 has a first end and a second end opposite to each other. The first end of the hanging portion 11 is connected to the main body 1, and the other end of the hanging portion 11 forms a free end. The hanging portion 11 is vertically arranged with the main body 1, and the hanging portion 11 and the main body 1 form an L-shaped structure. The opening cover structure 4 is arranged at the second end of the hanging portion 11, and the opening cover structure 4 is arranged downward relative to the second end of the hanging portion 11, so that the opening cover structure 4 can play a snap-in role. When the single-channel pipette is hung on the rack 8, the hanging portion 11 is hung on the rack 8, and the main body 1 and the opening cover structure 4 are located on both sides of the rack 8. The opening cover structure 4 can prevent the single-channel pipette from slipping, stabilize and protect the hanging installation of the single-channel pipette, and prevent the single-channel pipette from breaking.

[0059] The main body 1 and the cover opening structure 4 are located at both ends of the hanging part 11, so that the hanging part 11 can act as a lever, and the experimenter can apply a smaller force to open the tube cover 71, thereby improving the experimenter's usage experience. At the same time, it can greatly save the experimenter's physical strength during a large number of cover opening processes.

[0060] In one embodiment, the single-channel pipette further includes a sleeve 6, which can be connected to the first end of the main body 1 through a flexible connection portion 61, and the sleeve 6 is adapted to the suction nozzle 2, and the sleeve 6 can be sleeved on the suction nozzle 2. When the single-channel pipette is not in use, the sleeve 6 is sleeved on the suction nozzle 2 to isolate and protect the suction nozzle 2.

[0061] The flexible connection part 61 of the sleeve 6 can be a flexible silicone of an integral structure, or a rope connected to the sleeve 6. The sleeve 6 is connected to the main body 1 through the flexible connection part 61, which can prevent the sleeve 6 from being lost.

[0062] The above specific examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. For those skilled in the art of the present invention, some simple deductions, deformations or substitutions can be made based on the idea of ​​the present invention.

Claims

1. A single-channel pipette, characterized in that: include: a body having opposing first and second ends; A suction nozzle, the suction nozzle is arranged at the first end of the main body, and the suction nozzle is used to be inserted into the centrifuge tube to suck or inject liquid; A pipetting control knob, the pipetting control knob being disposed at the second end of the main body and being used to adjust the volume of the aspirated liquid; as well as A cover opening structure is arranged on the main body and is used to open the tube cover of the centrifuge tube.

2. The single-channel pipette according to claim 1, characterized in that The cover opening structure is a circular ring structure, and the circular ring structure is used to be sleeved on the tube cover of the centrifuge tube to open the tube cover of the centrifuge tube.

3. The single-channel pipette according to claim 2, characterized in that The cover opening structure is an inner diameter adjustable structure, and the cover opening structure can be adjusted to inner diameters of different specifications.

4. The single-channel pipette according to claim 3, characterized in that The opening cover structure can be adjusted to a first inner diameter, a second inner diameter or a third inner diameter. The first inner diameter is adapted to the tube cover of a 0.2ml centrifuge tube, the second inner diameter is adapted to the tube cover of a 0.6ml centrifuge tube, and the third inner diameter is adapted to the tube cover of a 1.5ml centrifuge tube.

5. The single-channel pipette according to claim 3, characterized in that The opening cover structure includes a hard and deformable steel rope, one end of which is provided with a limiting hole, and the end of the steel rope away from the limiting hole is provided with a plurality of clamping parts, and the plurality of clamping parts are respectively connected to the limiting holes to adjust the inner diameters of different specifications.

6. The single-channel pipette according to claim 2, characterized in that The main body is provided with a flexible connection structure, and the opening cover structure is connected to the main body through the flexible connection structure.

7. The single-channel pipette according to claim 2, characterized in that The main body is provided with a plurality of opening cover structures, and the plurality of opening cover structures have different inner diameters and are used to open centrifuge tubes of different specifications; or the opening cover structures are detachably connected to the main body.

8. The single-channel pipette according to claim 1, characterized in that A hanging portion is provided on the side surface of the second end of the main body, and the cover opening structure is arranged on the hanging portion.

9. The single-channel pipette according to claim 8, characterized in that The hanging portion protrudes from the main body, and has a first end and a second end opposite to each other. The first end of the hanging portion is connected to the main body, and the opening structure is arranged at the second end of the hanging portion.

10. The single-channel pipette according to claim 1, characterized in that It also includes a sleeve, which is detachably mounted on the suction nozzle.

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