CN211339447U

CN211339447U - Nucleic acid extraction workstation

Info

Publication number: CN211339447U
Application number: CN201921716953.2U
Authority: CN
Inventors: 杨锦宇; 管雷; 胥皖省; 王向柳
Original assignee: Nanjing Springen Biological Technology Co ltd
Current assignee: Nanjing Springen Biological Technology Co ltd
Priority date: 2019-10-14
Filing date: 2019-10-14
Publication date: 2020-08-25
Anticipated expiration: 2029-10-14

Abstract

The utility model belongs to the technical field of it is biological, concretely relates to nucleic acid draws workstation, include: an extraction mechanism and a transfer mechanism; the extraction mechanism is suitable for extracting nucleic acid in the test solution; the transfer mechanism is suitable for removing the residual test solution, so that the aim of separating and extracting nucleic acid is fulfilled, the automation degree of equipment is improved, and human interference factors in the extraction process are reduced; in addition, additional other consumables are not needed, and the use cost of the equipment is greatly reduced.

Description

Nucleic acid extraction workstation

Technical Field

The utility model relates to the field of biotechnology, concretely relates to nucleic acid draws workstation.

Background

Scientific research users are the main markets for nucleic acid extraction, and have the characteristics of multiple sample types, uncertain single sample quantity and the like, and have higher requirements on nucleic acid extraction. At present, the scheme for extracting nucleic acid on the market is mainly a kit method, and the method has large dependence on equipment and is difficult to obtain a stable result. Especially, when a high-throughput user performs nucleic acid extraction work, the dependence on personnel is large, the experimental work intensity is high, the laboratory equipment wear rate is high, and meanwhile, the repeatability among samples cannot be well guaranteed. Based on this, the utility model provides a nucleic acid extraction workstation, especially to scientific research user's nucleic acid extraction is the solution of integration.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a nucleic acid draws workstation draws nucleic acid through the liquid-transfering method to improve equipment's degree of automation.

In order to solve the technical problem, the utility model provides a nucleic acid extraction workstation, include: an extraction mechanism and a transfer mechanism; the extraction mechanism is suitable for extracting nucleic acid in the test solution; the transfer mechanism is adapted to remove the sample solution residue.

Further, the extraction mechanism includes: the liquid feeding component, the vibration component and the adsorption component are arranged on the base; the liquid adding assembly is suitable for adding a test liquid into the extraction tube; the vibration component is suitable for oscillating the test solution; and the adsorption component is suitable for adsorbing nucleic acid in the test solution.

Further, the liquid feeding subassembly includes: the liquid injection motion module is communicated with a plurality of liquid injection needles respectively; the liquid injection motion module is suitable for driving each liquid injection needle to be respectively aligned with each extraction tube so as to inject the test liquid in the test liquid bottle into each extraction tube.

Further, the vibration assembly includes: the shaking table comprises a rotating motor, an eccentric module arranged on an output shaft of the rotating motor and a shaking table bottom plate positioned at the top of the eccentric module; when the rotating motor rotates, the eccentric module drives the extraction tube to do elliptic motion so as to oscillate the test solution.

Further, the adsorption assembly includes: a magnetic frame; a plurality of magnetic rods are arranged on the magnetic frame at intervals; and each magnetic rod is suitable for being clamped into the gap of the adjacent extraction tube so as to adsorb the nucleic acid in the test solution on the inner wall of the extraction tube.

Further, stations for placing the extraction tube are arranged at the liquid adding assembly, the vibration assembly and the adsorption assembly; and the station is provided with a plurality of elastic sheets for clamping the extraction tube.

Further, the nucleic acid extraction workstation further comprises a gripper mechanism; the gripping and clamping mechanism is suitable for gripping and moving the extraction tube to a corresponding station.

Further, the transfer mechanism includes: the liquid suction motion module, the vacuum pump and a plurality of liquid suction needles are respectively connected with the vacuum pump; the liquid suction motion module drives the liquid suction needles to be respectively inserted into the test liquid tubes; and the vacuum pump is suitable for generating negative pressure so as to suck out the test solution residue in the extraction tube through the liquid suction needle.

Further, the transfer mechanism further comprises: a liquid storage box; when the liquid suction needles suck the residual test liquid, the liquid suction motion module drives the liquid suction needles to be above the liquid storage box so as to release the residual test liquid.

The beneficial effects of the utility model are that, the nucleic acid extraction workstation of the utility model extracts nucleic acid by the liquid transfer method, namely the extraction mechanism extracts nucleic acid in the test solution, and then the transfer mechanism shifts out the residual test solution, thereby achieving the purpose of separating and extracting nucleic acid, improving the automation degree of the equipment, and reducing the interference factors of people in the extraction process; in addition, additional other consumables are not needed, and the use cost of the equipment is greatly reduced.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a schematic view of the overall structure of a nucleic acid extraction station according to the present invention;

FIG. 2 is a schematic diagram of the internal structure of the nucleic acid extraction station of the present invention;

FIG. 3 is a schematic view of the back side of the nucleic acid extraction station of the present invention;

in the figure: the device comprises an extraction mechanism 1, a liquid adding assembly 11, a liquid pumping motion module 111, an X-axis motor 1111, a Y-axis motor 1112, a Z-axis motor 1113, a Y-axis lead screw 1114, a base 115, a cross beam 1116, a belt pulley 1117, an X-axis lead screw 1118, a mounting base 1119, a liquid pumping needle 112, an electromagnetic valve 113, a waste liquid tank 114, a vibration assembly 12, a shaking table bottom plate 121, an adsorption assembly 13, a magnetic rod 131, a transfer mechanism 2, a vacuum pump 21, a liquid suction needle 232, a liquid storage box 23, a station 3, an elastic sheet 31 and a grasping mechanism 4.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

FIG. 1 is a schematic diagram showing the overall structure of the nucleic acid extraction station of the present invention.

As shown in FIG. 1, the present embodiment provides a nucleic acid extraction workstation comprising: an extraction mechanism 1 and a transfer mechanism 2; the extraction mechanism 1 is adapted to extract nucleic acids in a sample solution; the transfer mechanism 2 is adapted to remove the sample liquid residue.

The nucleic acid extraction workstation of the embodiment extracts nucleic acid by a liquid transfer method, namely the extraction mechanism extracts nucleic acid in a test solution, and then the transfer mechanism transfers out the residual test solution, so that the purpose of separating and extracting nucleic acid is achieved, the automation degree of equipment is improved, and human interference factors in the extraction process are reduced; in addition, additional other consumables are not needed, and the use cost of the equipment is greatly reduced.

FIG. 2 is a schematic diagram showing the internal structure of the nucleic acid extraction station of the present invention.

Further, referring to fig. 2, the extraction mechanism 1 includes: the liquid adding assembly 11, the vibrating assembly 12 and the adsorption assembly 13; the liquid adding assembly 11 is suitable for adding a test liquid into the extraction tube; the vibration assembly 12 is adapted to oscillate the test solution; and the adsorption member 13 is adapted to adsorb nucleic acid in a sample solution.

Alternatively, the extraction tube may be, for example, but not limited to, a multi-well deep-well plate, such as a commonly-used 96-well deep-well plate, and the test solution is adapted to be added to each deep well of the 96-well deep-well plate.

As an alternative embodiment of the charging assembly.

Referring to fig. 2, the charging assembly 11 comprises: the liquid injection motion module 111 is respectively communicated with a plurality of liquid injection needles 112; the liquid injection motion module 111 is adapted to drive each liquid injection needle 112 to align with each extraction tube, so as to inject the test liquid in the test liquid bottle into each extraction tube. Specifically, the method comprises the following steps. The pipetting needle 112 is in communication with the sample solution bottle via a liquid conduit (not shown in fig. 2) provided with a solenoid valve 113 for controlling the pipetting action of the pipetting needle or releasing the remaining sample solution, and the sample solution is adapted to be pumped into the pipetting needle by gas pressure or a liquid pump filled into the sample solution bottle.

Optionally, the liquid pumping movement module 111 includes: an X-axis motor 1111, a Y-axis motor 1112 and a Z-axis motor 1113 to realize the movement of the tapping needle in an XYZ three-dimensional space, namely, the Z-axis motor 1113 drives the tapping needle to move up and down along a Z axis (as shown in the direction F1 in FIG. 2) to be inserted into the deep hole for tapping (injecting test solution) or pulling out the deep hole; after the deep holes are pulled out, the X-axis motor 1111 drives the liquid injection needle to horizontally move along the X-axis (as shown in the direction of F2 in fig. 2), so as to repeatedly inject liquid through each row of deep holes in sequence; after the whole liquid injection action of the 96-hole deep-hole plate is completed, the Y-axis motor 1112 drives the injection needle to horizontally move to the waste liquid tank 114 along the Y-axis (as shown in the direction of F3 in fig. 2), and the residual test liquid is released.

Specifically, referring to fig. 2 and 3, the Y-axis motor 1112 drives the base 1115 to move horizontally along the Y-axis through a Y-axis pulley (hidden and not shown in fig. 3) and a Y-axis lead 1114 thereon, the base 1115 is provided with the X-axis motor 1111 through a cross beam 1116, and the Y-axis motor 1112 drives the Y-axis lead 1114 to move; the X-axis motor 1111 drives the mounting base 1119 to horizontally move along the X axis through the X-axis belt pulley 1117 and the X-axis lead bar 1118 thereon, and the Z-axis motor 1113 is arranged on the mounting base 1119; the Z-axis motor 1113 drives the pumping needle 112 to move up and down along the Z-axis through the Z-axis belt pulley and the Z-axis screw rod (not shown in fig. 2).

The liquid adding assembly of the embodiment drives the liquid adding needle to realize the movement in an XYZ three-dimensional space through the liquid adding movement module so as to add the test liquid into each deep hole of the 96-hole deep hole plate row by row, thereby improving the liquid adding speed, ensuring the extraction efficiency and having great significance especially for high-throughput sequencing work; meanwhile, the residual test solution can be discharged, so that various test solutions can be conveniently replaced and extracted, and the applicability of the equipment is improved.

As an alternative embodiment of the vibration assembly.

Referring to fig. 2, the vibration assembly 12 includes: a rotation motor (located under the base plate of the shaking table, hidden, not shown in fig. 2), an eccentric module (located under the base plate of the shaking table, hidden, not shown in fig. 2) mounted on the output shaft of the rotation motor, and a shaking table base plate 121 located on the top of the eccentric module; when the rotating motor rotates, the eccentric module is suitable for driving the extraction tube to do elliptic motion through the bottom plate of the shaking table so as to oscillate the test solution.

Specifically, the eccentric module includes: an eccentric shaft arranged on an output shaft of the rotating motor and an eccentric wheel arranged on the eccentric shaft; the shaking table bottom plate 121 is arranged at the top of the eccentric wheel and used for placing an extraction tube; the extraction tube can be clamped on the bottom plate of the shaking table to prevent the extraction tube from being thrown out due to centrifugal force during movement.

The vibrating component of the embodiment has the advantages that the motor and the eccentric module are combined, so that the extracting tube can move in an elliptic mode, the phenomenon that the traditional vibrating component shakes evenly or sprays test solution due to inertia or up-and-down motion generated by circular motion in the vibrating process is avoided, the uniformity of the test solution is improved, and the vibrating component has the advantages of being simple in structure, stable in performance and good in shaking evenly effect.

As an alternative embodiment of the sorption assembly.

Referring to fig. 2, the adsorption assembly 13 includes: a magnetic frame; a plurality of magnetic rods 131 are arranged on the magnetic frame at intervals; and each magnetic rod 131 is suitable for being clamped into the gap of the adjacent extraction tube so as to adsorb the nucleic acid in the test solution on the inner wall of the extraction tube. When the extraction tube is a 96-hole deep-hole plate, each magnetic rod 131 is suitable for being clamped into the interval of each deep hole and is attached to the outer side wall of the deep hole so as to adsorb the nucleic acid in the deep test solution on the inner wall of the deep hole, and then the residual test solution is transferred out of the deep hole through the transfer mechanism 2, so that the nucleic acid extraction action is completed, namely the nucleic acid extraction by the liquid transfer method.

The adsorption component of this embodiment combines the nucleic acid in the cylindrical bar magnet absorption test solution for nucleic acid extraction does not need extra other consumptive materials in the completion in the haplopore, also can extract a large amount of nucleic acids simultaneously, satisfies the experimental demand of high flux, very big reduction the use cost of equipment.

Further, as shown in fig. 2, stations 3 for placing extraction tubes are arranged at the liquid adding assembly 11, the vibrating assembly 12 and the adsorbing assembly 13; the station 3 is provided with a plurality of elastic sheets 31 for clamping the extraction tube and facilitating the grabbing and clamping mechanism to grab or place the extraction tube. Through the station separation design with liquid feeding subassembly 11, vibration subassembly 12 and adsorption component 13, still be equipped with other vacant work in order to do the turnover, provide the feasibility for the grab clamp mechanism overall planning utilization time, for example, when equipment shakes even test solution on the vibration station, can also accomplish the liquid feeding and the magnetism adsorption action of all the other extraction tubes in shaking even time through liquid feeding subassembly 11 and adsorption component 13, shortened the time of high flux extraction nucleic acid greatly.

Further, as shown in FIG. 1, the nucleic acid extraction station further comprises a gripper mechanism 4; the gripping and clamping means 4 are adapted to grip and move the extraction duct onto the respective station 3.

FIG. 3 is a schematic view of the back structure of the nucleic acid extraction station of the present invention.

As an alternative embodiment of the sorption assembly.

Referring to fig. 2 and 3, the transfer mechanism 2 includes: the liquid suction motion module, the vacuum pump 21 and a plurality of liquid suction needles 22 which are respectively connected with the vacuum pump 21; the liquid suction motion module drives the liquid suction needles 22 to be respectively inserted into the test liquid tubes; and the vacuum pump 21 is adapted to suck out the sample liquid residue in the extraction tube through the pipette needle 22. In particular, each pipette needle is adapted to be connected to a vacuum pump via a respective air tube (not shown in FIG. 2).

Optionally, similarly, the liquid suction motion module is similar to the liquid pumping motion module 111 in structure and also includes a corresponding X-axis motor, a Y-axis motor and a Z-axis motor, so as to implement the movement of the liquid suction needle in the XYZ three-dimensional space, and suck the test liquid residues in each deep hole of the 96-hole deep-hole plate row by row. The liquid suction motion module and the liquid beating motion module can share the same X-axis motor 1111 and the same Y-axis motor 1112 to simplify the structure and reduce the occupied space of the equipment, namely, the X-axis motor 1111 drives the liquid suction needle to horizontally move along the X-axis (as shown in the direction of F2 in fig. 2) so as to pass through each row of deep holes in sequence to repeat the liquid suction action; after the complete pipetting action of the 96-well deep-hole plate is completed, the Y-axis motor 1112 drives the pipetting needle to horizontally move along the Y-axis to the position above the liquid storage box 23 (as shown in the direction of F3 in fig. 2), so as to release the residual sample liquid. In addition, a Z-axis motor in the liquid suction motion module is arranged independently and is not shared with the liquid pumping motion module, so that the liquid suction needle is prevented from entering the deep hole along with the liquid pumping needle when the liquid pumping needle is inserted into the deep hole to perform liquid pumping action, and liquid testing is polluted or normal use of equipment is influenced.

Optionally, referring to fig. 2, the transfer mechanism 2 further includes: a liquid storage box 23; after the liquid absorption needles 22 absorb the residual test solution, the liquid absorption movement module drives the liquid absorption needles 22 to be above the liquid storage box 23 so as to release the residual test solution.

Optionally, the motors, the solenoid valves, and the vacuum pump of this embodiment are controlled by a control module, and the control module is, for example, but not limited to, a MYD-C7Z010/20 industrial control board. Optionally, the control module is adapted to be connected to a man-machine switch to control the mechanisms to operate. Of course, the control module can also realize that each mechanism works at the set time through a built-in clock chip.

In conclusion, the nucleic acid extraction workstation extracts nucleic acid by a liquid transfer method, namely the extraction mechanism extracts nucleic acid in a test solution, and then the transfer mechanism removes the residual test solution, and the specific process is that the extraction mechanism combines a liquid adding component, a vibration component and an adsorption component, so that the effects of liquid adding, elliptical swing oscillation and magnetic adsorption of nucleic acid during high-flux nucleic acid extraction can be met, and finally the residual test solution is sucked out and released by a liquid suction needle, so that the extracted nucleic acid is retained in an extraction tube, and the purpose of separating and extracting nucleic acid is achieved. Therefore, the nucleic acid extraction workstation improves the automation degree, reduces human interference factors in the extraction process, and simultaneously improves the extraction speed and the extraction effect; in addition, additional other consumables are not needed, the use cost of equipment is greatly reduced, and the method is particularly suitable for high-throughput nucleic acid extraction.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A nucleic acid extraction workstation, comprising:

an extraction mechanism (1) and a transfer mechanism (2);

the extraction mechanism (1) is adapted to extract nucleic acids in a test solution;

the transfer mechanism (2) is suitable for removing the residual test solution;

the extraction mechanism (1) comprises: the liquid feeding component (11), the vibrating component (12) and the adsorption component (13);

the liquid adding assembly (11) is suitable for adding a test liquid into the extraction tube;

the vibration assembly (12) is suitable for vibrating the test solution; and

the adsorption member (13) is adapted to adsorb nucleic acids in a sample solution.

2. The nucleic acid extraction workstation of claim 1,

the liquid feeding assembly (11) comprises: a liquid injection motion module (111) and a plurality of liquid injection needles (112) which are respectively communicated with the test liquid bottles;

the liquid injection motion module (111) is suitable for driving each liquid injection needle (112) to be respectively aligned with each extraction tube so as to inject the test liquid in the test liquid bottle into each extraction tube.

3. The nucleic acid extraction workstation of claim 1,

the vibration assembly (12) comprises: the shaking table comprises a rotating motor, an eccentric module arranged on an output shaft of the rotating motor and a shaking table bottom plate (121) positioned at the top of the eccentric module;

when the rotating motor rotates, the eccentric module is suitable for driving the extraction tube to do elliptic motion through the bottom plate of the shaking table so as to oscillate the test solution.

4. The nucleic acid extraction workstation of claim 1,

the adsorption assembly (13) comprises: a magnetic frame;

a plurality of magnetic rods (131) are arranged on the magnetic frame at intervals; and

each magnetic bar (131) is suitable for being clamped into the gap of the adjacent extraction tube so as to adsorb the nucleic acid in the test solution on the inner wall of the extraction tube.

5. The nucleic acid extraction workstation according to any one of claims 1 to 4,

stations (3) for placing extraction tubes are arranged at the liquid adding assembly (11), the vibrating assembly (12) and the adsorption assembly (13);

and the station (3) is provided with a plurality of elastic sheets (31) for clamping the extraction tube.

6. The nucleic acid extraction workstation of claim 5,

the nucleic acid extraction workstation further comprises a gripper mechanism (4);

the gripping and clamping mechanism (4) is suitable for gripping and moving the extraction tube to the corresponding station (3).

7. The nucleic acid extraction workstation of claim 1,

the transfer mechanism (2) comprises: the liquid suction motion module, the vacuum pump (21) and a plurality of liquid suction needles (22) which are respectively connected with the vacuum pump (21);

the liquid suction motion module drives the liquid suction needles (22) to be respectively inserted into the test liquid tubes; and

the vacuum pump (21) is adapted to generate a negative pressure to suck out the sample liquid residue in the extraction tube through the liquid suction needle (22).

8. The nucleic acid extraction workstation of claim 7,

the transfer mechanism (2) further comprises: a liquid storage box (23);

when the liquid suction needles (22) suck the residual test liquid, the liquid suction motion module drives the liquid suction needles (22) to be above the liquid storage box (23) so as to release the residual test liquid.