CN217578894U - Magnetic bead sample injector convenient to operate - Google Patents

Abstract

The application discloses a magnetic bead sample injector convenient to operate, which comprises a pore plate, a magnetic bead sample adding plate and a pressure plate; the pressing plate is positioned at the upper end of the magnetic bead sample adding plate, and the magnetic bead sample adding plate is positioned at the upper end of the pore plate; the pore plate is provided with a first through hole; the magnetic bead sample adding plate is provided with a second through hole vertically corresponding to the first through hole, and the lower end of the magnetic bead sample adding plate is provided with an accommodating tube for accommodating magnetic beads; the lower end of the pressing plate is provided with an extension pipe vertically corresponding to the second through hole, and the extension pipe extends into the accommodating pipe through the second through hole; in this way, the magnetic beads with the designated volume are added into the containing pipe of the magnetic bead sample adding plate in advance, the magnetic bead sample adding plate is placed above the pore plate, the pressure plate is aligned to the magnetic bead sample adding plate and applies pressure to the pressure plate, the magnetic beads in the containing pipe are released to the pore plate, and the sample adding operation is completed.

Description

Magnetic bead sample injector convenient to operate

Technical Field

The utility model belongs to the technical field of medical instrument, concretely relates to be a magnetic bead injector convenient to operation.

Background

It is well known that nucleic acids are important carriers of biological information and are the main subjects of molecular biological research. The quality of the nucleic acid sample directly affects the results of the experiment. Therefore, how to improve the extraction rate and purity of nucleic acid samples is one of the important research directions of researchers.

At present, a commonly used purification method for a sequencing company or a laboratory is a magnetic bead method, the magnetic bead method is rapid and simple in purification and high in recovery rate, fluorescent dyes influencing a sequencing result can be effectively removed, and the method is increasingly applied by people, but repeated liquid adding and elution are needed in the purification process, so that the workload is increased. The loading method is to use an automated loading machine to add beads or other solutions to the well plate, adding a specified volume per well. In this process, the operator needs to set the automatic sample adding machine to extract the magnetic beads or other liquids in the designated volume first, and then add the extracted magnetic beads or other liquids into the well plate. The sample sucking operation needs to be carried out again every time of sample adding, and if the sample adding volume changes, the program needs to be reset; if the type of the sample-adding liquid changes, the old gun head needs to be abandoned again and replaced by a new gun head. In the experiment of carrying out big batch or requiring speed, whole process is comparatively loaded down with trivial details consuming time.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a magnetic bead injector convenient to operation realizes the effect of adding the magnetic bead fast, effectively solves the problem that exists when using present automatic sample injector, also through improving the processing mode to simple repetitive work, is showing raises the efficiency.

The application discloses a magnetic bead sample injector convenient to operate, which comprises a pore plate, a magnetic bead sample adding plate and a pressure plate; the pressing plate is positioned at the upper end of the magnetic bead sample adding plate, and the magnetic bead sample adding plate is positioned at the upper end of the pore plate; the pore plate is provided with a first through hole; the magnetic bead sample adding plate is provided with a second through hole which vertically corresponds to the first through hole, and the lower end of the magnetic bead sample adding plate is provided with a containing pipe for containing magnetic beads; the lower end of the pressure plate is provided with an extension pipe which vertically corresponds to the second through hole, and the extension pipe extends into the accommodating pipe through the second through hole; in this way, the magnetic beads with the designated volume are added into the containing pipe of the magnetic bead sample adding plate in advance, the magnetic bead sample adding plate is placed above the pore plate, the pressure plate is aligned to the magnetic bead sample adding plate and applies pressure to the pressure plate, the magnetic beads in the containing pipe are released to the pore plate, and the sample adding operation is completed.

Furthermore, the first through holes are arranged in a grid array mode, and the use habit is met.

Further, a liquid containing pipe communicated with the first through hole is arranged at the lower end of the pore plate, and the circle center of the liquid containing pipe and the circle center of the first through hole are mapped into a point up and down; the target object is released into the liquid containing pipe through the first through hole.

Further, the circle center of the accommodating tube, the circle center of the second through hole, the circle center of the first through hole and the circle center of the extending tube are mapped into a point up and down; this arrangement ensures that the magnetic beads and the liquid in the sample plate are accurately discharged into the liquid containing tube of the well plate by the pressure plate.

Further, a thin film is arranged at the bottom end of the accommodating tube; after the pressing plate presses downwards, the extending pipe extends into the second through hole, the bottom end of the thin film is opened, and magnetic beads or target liquid in the containing pipe are released into the liquid containing pipe of the pore plate.

Further, the thickness of the bottom end area of the film is smaller than that of the side area of the film, and the bottom end area of the film is convenient to crack after being pressed inwards.

Further, the accommodating tube is arranged into a tubular structure with the inner diameter gradually reduced from top to bottom; or the accommodating pipe is arranged into a tubular structure with the upper and lower inner diameters being completely consistent.

Further, the outer diameter of the bottom end of the accommodating pipe is smaller than the inner diameter of the first through hole.

Further, the outer diameter of the extension pipe is smaller than the inner diameter of the second through hole.

Further, the extension pipe is solid.

Further, a first height adjusting structure is arranged at the lower end of the magnetic bead sample adding plate; the first height adjusting structure comprises a tray arranged at the lower end of the magnetic bead sample adding plate, a first connecting rod and a first threaded rod, wherein the first connecting rod and the first threaded rod are sequentially connected with the tray; the first connecting rod vertically moves up and down along the first threaded rod; when the magnetic bead sample adding device is used, the first connecting rod and the tray are driven to move up and down by rotation of the first threaded rod, so that the height of the magnetic bead sample adding plate relative to the pore plate is controlled.

Furthermore, the number of the first connecting rods is at least one, and the first connecting rods are connected with the first threaded rods through first connecting rings.

Furthermore, the lower end of the first threaded rod is provided with a motor which controls the rotation of the first threaded rod.

Further, a second height adjusting structure is arranged at the lower end of the pressing plate and comprises a tray, a second connecting rod and a second threaded rod, wherein the tray is arranged at the lower end of the pressing plate, and the second connecting rod and the second threaded rod are sequentially connected with the tray; the second connecting rod vertically moves up and down along the second threaded rod; during the use, the rotation of second threaded rod drives second connecting rod and tray and takes place to reciprocate to the height of the relative orifice plate of control clamp plate.

Furthermore, at least one second connecting rod is arranged, and the second connecting rod is connected with the second threaded rod through a second connecting ring.

And furthermore, a motor is arranged at the lower end of the second threaded rod and controls the second threaded rod to rotate.

Further, the orifice plate lower extreme sets up the tray, and the tray lower extreme sets up the boss, and the tray is placed in the boss upper end.

Furthermore, the upper end of the boss is provided with a fixing structure for fixing the position of the tray. The fixing structure is arranged to be a buckle or other structures convenient for fixing the tray.

Further, a position adjusting structure is arranged at the lower end of the tray, and the position adjusting structure comprises a moving frame arranged at the lower end of the tray and a driving piece used for adjusting the position of the moving frame; the movable frame and the tray are both arranged at the upper end of the boss; the positions of the moving frame and the tray are changed by driving the driving member.

Further, the driving member includes: the fluted disc is connected with the motor; the motor controls the rotation of the fluted disc; the inner side of the movable frame is provided with convex teeth matched with the fluted disc for use; the rotation of motor drives the rotation of fluted disc, and the rotation of fluted disc drives and removes the frame and remove to drive tray and the orifice plate that remove the frame inside and take place to remove.

Further, at least two trays are arranged in the movable frame.

Further, the magnetic bead sample injector also comprises a shell; the boss is arranged at the bottom end of the first side of the shell; the orifice plate, the magnetic bead sample adding plate and the pressing plate are positioned above the lug boss. The motor at the lower end of the fluted disc is arranged inside the boss, and a containing cavity for placing the motor connected with the fluted disc is arranged in the boss.

Further, the housing includes: a first region and a second region; the first area and the second area are separated by a partition plate; the first area internally accommodates a first threaded rod and a second threaded rod; and a through hole for the first connecting rod and the second connecting rod to extend into and move is formed in the first side of the shell.

Furthermore, the first connecting rod and the second connecting rod are respectively provided with a fixing strip, and the fixing strips are positioned on two sides of the wall of the first side of the shell.

Further, fixed blocks are arranged at the upper ends of the first threaded rod and the second threaded rod, and an accommodating cavity for accommodating the fixed blocks is formed in the partition plate; the stability of first threaded rod, second threaded rod when rotating has been guaranteed to this kind of setting.

Furthermore, a control assembly for controlling the rotation of the motor and a power supply structure for providing energy for the control assembly are arranged in the second area; the control assembly comprises a central controller, a timer, a display and an operation key, wherein the timer, the display and the operation key are respectively connected with the central controller; the motor is connected with the central controller; the operation keys are used for presetting the rotation time of the three motors respectively, and the timer is used for recording the rotation time of the three motors and the adjacent time intervals of the work of the motors; the display is used for displaying three information whether the motor works or not and the respective rotation time of the three motors. During the use, the orifice plate, the magnetic bead adds model and clamp plate and places respectively on respective tray, after the good procedure of operating key presetting, the good procedure of presetting includes, the live time of three motor, information such as adjacent interval time of same motor work, central controller transmits the signal respectively to three motor, three motor begins the operation according to the instruction, and show running state, the operation duration, data transmission such as interval time between the adjacent operation number of times to the display through the display, it is quick accurate and conveniently look over, therefore, the clothes hanger is strong in practicability. The operating keys are arranged on one side of the display, or the operating keys are arranged on a display screen and arranged on a touch screen.

Further, a first infrared emitter is arranged on the side wall of the first connecting ring, a second infrared emitter is arranged on the side wall of the second connecting ring, infrared receivers which are in one-to-one correspondence with the first infrared emitter and the second infrared emitter are arranged on the side wall inside the shell, the infrared receivers are respectively arranged at positions corresponding to the first infrared emitter when the magnetic bead sample adding plate and the pore plate are attached, and at positions corresponding to the second infrared emitter when the pressure plate and the magnetic bead sample adding plate are attached when the magnetic bead sample adding plate and the pore plate are attached; the infrared emitter and the infrared receiver are respectively connected with the central controller; in such a way, when the magnetic bead sample adding plate is attached to the pore plate, the first infrared emitter is matched with a corresponding infrared receiver signal, and the signal is transmitted to the central controller, and the central controller controls the opening and closing of a motor connected with the first threaded rod; when the magnetic bead adds the model and the orifice plate laminating, the magnetic bead adds the model and the clamp plate laminating is during, and second infrared emitter matches with the infrared receiver signal that corresponds to with this signal transmission to central controller, central controller again control with the opening and closing of second threaded rod connection motor. After the magnetic bead sample adding plate, the pore plate and the pressing plate are attached, the pressing plate and the magnetic bead sample adding plate can be separated one by operating the operating keys, and the magnetic bead sample adding plate and the pore plate are separated.

The utility model has the advantages that: 1. the magnetic bead sample adding plate containing the magnetic beads or other target liquid is placed above the pore plate, and the magnetic beads or other target liquid in the magnetic bead sample adding plate are released to the pore plate by using the pressing plate, so that the magnetic bead sample adding plate can be pre-stored by the automatic sample adding device in advance, the problem that the conventional automatic sample adding device needs to suck the magnetic bead sample from a liquid container and then release the magnetic bead sample to the pore plate in the purification process is solved, and the working efficiency is improved; 2. the magnetic bead sample adding plate is used as a consumable, so that the volume and the type of the magnetic beads in the magnetic bead sample adding plate or other target liquids can be specified, a program does not need to be reset, and the gun heads do not need to be replaced due to the change of the liquid types in the purification process; the efficiency of the purification process is integrally improved; 3. by arranging the position adjusting structure capable of changing the position of the empty plate, when one pore plate is subjected to sample adding, the other pore plate is used for standby; 4. through setting up the height control structure who is used for adjusting magnetic bead and adds model and clamp plate, realized the automation well.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural view of a first height adjustment structure of the present invention;

FIG. 3 is a schematic view of the magnetic bead sample adding plate structure of the present invention;

fig. 4 is a schematic structural view of a second height adjustment structure of the present invention;

FIG. 5 is a schematic structural view of the pressing plate of the present invention;

FIG. 6 is a schematic view of the housing, the boss, the position adjusting structure and the orifice plate of the present invention;

FIG. 7 is a schematic structural view of the movable frame, the fluted disc and the tray of the present invention;

FIG. 8 is a schematic structural view of the movable frame and the fluted disc of the present invention;

fig. 9 is a schematic structural view of the tray of the present invention;

FIG. 10 is a schematic view of the structure of the perforated plate of the present invention;

FIG. 11 is a schematic structural view of the housing and the boss of the present invention;

fig. 12 is a perspective view of the structure of the housing and the boss of the present invention;

fig. 13 is a block diagram of the control assembly of the present invention;

in the figure, 1, a well plate; 11. a first through hole; 12. a liquid containing pipe; 13. moving the frame; 14. a fluted disc; 2. adding a sample plate to the magnetic beads; 21. a second through hole; 22. accommodating the tube; 23. a first connecting rod; 24. a first threaded rod; 25. a fixing strip; 26. a first connecting ring; 3. pressing a plate; 31. extending the tube; 32. a second connecting rod; 33. a second threaded rod; 34. a fixed block; 35. a second connection ring; 4. a tray; 5. a housing; 51. a boss; 52. a first region; 53. a second region; 54. a partition plate; 55. a through hole; 6. a control component; 61. a power supply structure; 62. A motor; 63. a central controller; 64. a timer; 65. a display; 66. an operation key.

Detailed Description

The technical solutions in the embodiments of the present invention will be described below clearly and completely in the specific embodiments, and it should be apparent that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and other advantages and effects of the present invention can be easily understood by those skilled in the art from the disclosure in the specification. The utility model discloses can also implement or use through other different concrete implementation manners, under the condition of conflict-free, the characteristics in following embodiment and the embodiment can make up each other, based on the embodiment in the utility model, all other embodiments that the ordinary skilled in the art obtained under the prerequisite of not making creative work all belong to the scope of protection of the utility model.

Fig. 1 is a schematic overall structure diagram provided in this embodiment, and the present application discloses an easy-to-operate magnetic bead sample applicator, which includes a well plate 1, a magnetic bead sample application plate 2, and a pressure plate 3; the pressing plate 3 is positioned at the upper end of the magnetic bead sample adding plate 2, and the magnetic bead sample adding plate 2 is positioned at the upper end of the pore plate 1; the orifice plate 1 is provided with a first through hole 11; the magnetic bead sample adding plate 2 is provided with a second through hole 21 vertically corresponding to the first through hole 11, and the lower end of the magnetic bead sample adding plate 2 is provided with an accommodating tube 22 for accommodating magnetic beads; the lower end of the pressing plate 3 is provided with an extending pipe 31 which vertically corresponds to the second through hole 21, and the extending pipe 31 extends into the accommodating pipe 22 through the second through hole 21; in adding the magnetic bead of appointed volume to the holding tube 22 of magnetic bead with model 2 in advance through this kind of mode, the magnetic bead adds model 2 and places in orifice plate 1 top, aims at magnetic bead with model 2 and exerts pressure to clamp plate 3 again with clamp plate 3, releases the magnetic bead in the holding tube 22 to orifice plate 1, accomplishes the application of sample operation.

In one embodiment, the first through holes 11 are arranged in a grid array, which is suitable for the usage habit. A liquid containing pipe 12 communicated with the first through hole 11 is arranged at the lower end of the pore plate 1, and the circle center of the liquid containing pipe 12 and the circle center of the first through hole 11 are mapped into a point up and down; the object is released into the liquid containing tube 12 through the first through hole 11. The center of the accommodating tube 22, the center of the second through hole 21, the center of the first through hole 11 and the center of the extension tube 31 are mapped as one point up and down; this arrangement ensures that the liquid in the magnetic bead plus sample plate 2 is accurately released into the liquid containing tube 12 of the well plate 1 by means of the pressure plate 3. The bottom end of the accommodating tube 22 is provided with a film; after the pressing plate 3 presses downwards, the extension tube 31 extends into the second through hole 21, the bottom end of the thin film is opened, and the magnetic beads or the target liquid in the containing tube 22 are released into the containing tube 12 of the well plate 1. Original magnetic beads or target liquid in the magnetic bead sample adding plate 2 are released under the action of pressure and pressure, and the problem that the conventional automatic sample adding device needs to absorb the target liquid and then release the target liquid is solved.

In one embodiment, the bottom region of the film is less thick than the side regions of the film, and the bottom region of the film is adapted to facilitate rupturing when the film is pressed inwardly. The accommodating tube 22 is provided in a tubular structure with an inner diameter gradually decreasing from top to bottom; or the accommodating tube 22 is provided as a tubular structure having the upper and lower inner diameters completely uniform. The outer diameter of the bottom end of the accommodating tube 22 is smaller than the inner diameter of the first through hole 11. The outer diameter of the penetration pipe 31 is smaller than the inner diameter of the second through hole 21. The dip tube 31 is provided as a solid.

Fig. 2 is a schematic structural diagram of a first height adjustment structure provided in this embodiment, and fig. 3 is a schematic structural diagram of a magnetic bead sample adding plate 2 provided in this embodiment;

in one embodiment, the lower end of the magnetic bead sample adding plate 2 is provided with a first height adjusting structure; the first height adjusting structure comprises a tray 4 arranged at the lower end of the magnetic bead sample adding plate 2, a first connecting rod 23 and a first threaded rod 24 which are sequentially connected with the tray 4; the first connecting rod 23 vertically moves up and down along the first threaded rod 24; when the magnetic bead sample adding plate is used, the first connecting rod 23 and the tray 4 are driven to move up and down by the rotation of the first threaded rod 24, so that the height of the magnetic bead sample adding plate 2 relative to the pore plate 1 is controlled.

In one embodiment, at least one first connecting rod 23 is provided, and the first connecting rod 23 is connected with the first threaded rod 24 through a first connecting ring 26. The lower end of the first threaded rod 24 is provided with a motor 62, and the motor 62 controls the rotation of the first threaded rod 24. The control mode can ensure the stability of the magnetic beads and the sample plate 2 when being pressed down and can realize automation.

Fig. 4 is a schematic structural view of a second height adjustment structure provided in this embodiment, and fig. 5 is a schematic structural view of a platen 3 provided in this embodiment; fig. 9 is a schematic structural view of the tray 4 provided in this embodiment;

in one embodiment, a second height adjusting structure is arranged at the lower end of the pressing plate 3, and comprises a tray 4 arranged at the lower end of the pressing plate 3, and a second connecting rod 32 and a second threaded rod 33 which are sequentially connected with the tray 4; the second connecting rod 32 vertically moves up and down along the second threaded rod 33; when the device is used, the second connecting rod 32 and the tray 4 are driven to move up and down by the rotation of the second threaded rod 33, so that the height of the pressing plate 3 relative to the pore plate 1 is controlled.

In one embodiment, at least one of the secondary connecting rods 32 is provided, and the secondary connecting rod 32 and the secondary threaded rod 33 are connected by a secondary connecting ring 35. A motor 62 is arranged at the lower end of the second threaded rod 33, and the motor 62 controls the rotation of the second threaded rod 33. The lower end of the pore plate 1 is provided with a tray 4, the lower end of the tray 4 is provided with a boss 51, and the tray 4 is placed at the upper end of the boss 51. The upper end of the boss 51 is provided with a fixing structure for fixing the position of the tray 4. The fixing structure is provided as a snap or other structure that facilitates fixing the tray 4.

In one embodiment, the tray 4 includes: the baffle plates are positioned at four corners of the upper end of the square ring and are integrally connected with the square ring; the baffle is an L-shaped baffle; an opening is arranged between every two baffle plates. As shown in fig. 9.

Fig. 6 is a schematic structural diagram of the housing 5, the boss 51, the position adjusting structure and the orifice plate 1 provided in this embodiment, fig. 7 is a schematic structural diagram of the moving frame 13, the toothed disc 14 and the tray 4 provided in this embodiment, and fig. 8 is a schematic structural diagram of the moving frame 13 and the toothed disc 14 provided in this embodiment; fig. 10 is a schematic structural view of the orifice plate 1 provided in the present embodiment;

in one embodiment, a position adjusting structure is provided at the lower end of the tray 4, and the position adjusting structure includes a moving frame 13 provided at the lower end of the tray 4, and a driving member for adjusting the position of the moving frame 13; the movable frame 13 and the tray 4 are both arranged at the upper end of the boss 51; by driving the driving member, the positions of the moving frame 13 and the tray 4 are changed.

The driving member includes: the fluted disc 14 is connected with the motor 62, and the fluted disc 14 is connected with the motor 62; the motor 62 controls the rotation of the fluted disc 14; convex teeth matched with the fluted disc 14 for use are arranged on the inner side of the movable frame 13; the rotation of the motor 62 drives the rotation of the gear disc 14, and the rotation of the gear disc 14 drives the moving frame 13 to move, so as to drive the tray 4 and the orifice plate 1 inside the moving frame 13 to move.

In one embodiment, two trays 4 are provided in the moving frame 13, respectively, in the moving frame 13, and the well plate 1 is placed on the upper end of the tray 4. The well plate 1 may be any well plate 1 commonly used in the art, and may include 4 rows × 6 columns (24 wells in total), 6 rows × 8 columns (48 wells in total), 8 rows × 12 columns (96 wells in total), 12 rows × 16 columns (192 wells in total), and 16 rows × 24 columns (384 wells in total). The well plate 1 in this example is a 96 well plate 1; the cover is a silica gel cover commonly used in the prior art.

Fig. 11 is a schematic structural diagram of the housing 5 and the boss 51 provided in this embodiment, fig. 12 is a perspective structural view of the housing 5 and the boss 51 provided in this embodiment, and fig. 13 is a block structural diagram of the control assembly 6 provided in this embodiment;

in one embodiment, the magnetic bead injector further comprises a housing 5; the boss 51 is arranged at the bottom end of the first side of the shell 5; the well plate 1, the magnetic bead sample adding plate 2 and the pressing plate 3 are positioned above the boss 51. The motor 62 at the lower end of the fluted disc 14 is arranged inside the boss 51, and an accommodating cavity for placing the motor 62 connected with the fluted disc 14 is arranged in the boss 51.

In one embodiment, the housing 5 includes: a first region 52 and a second region 53; the first area 52 and the second area 53 are separated by a partition 54; the first region 52 internally houses the first threaded bar 24 and the second threaded bar 33; a through hole 55 is provided in the first side of the housing 5 for the first and second connecting rods 23 and 32 to extend and move.

The first connecting rod 23 and the second connecting rod 32 are respectively provided with a fixing strip 25, and the fixing strips 25 are positioned on two sides of the wall of the first side of the shell 5.

The upper ends of the first threaded rod 24 and the second threaded rod 33 are provided with fixed blocks 34, and an accommodating cavity for accommodating the fixed blocks 34 is arranged in the partition plate 54; this arrangement ensures stability of the first and second threaded rods 24, 33 during rotation.

A control assembly 6 for controlling the rotation of the motor 62 and a power supply structure 61 for supplying power to the control assembly 6 are arranged in the second area 53; the control assembly 6 comprises a central controller 63, a timer 64, a display 65 and an operation key 66, wherein the timer 64, the display 65 and the operation key 66 are respectively connected with the central controller 63; the motor 62 is connected with a central controller 63; the operation keys 66 are used for presetting the rotation time of the three motors 62 respectively, and the timer 64 is used for recording the rotation time of the three motors 62 and the adjacent time intervals of the work of the motors 62; the display 65 is used to display three information on whether to operate and the respective rotation times of the three motors 62. During the use, orifice plate 1, the magnetic bead adds model 2 and clamp plate 3 and places respectively on respective tray 4, after the good procedure of operating key 66 presets, the good procedure of presetting includes, the rotation time of three motor 62, information such as adjacent interval time of same motor 62 work, central controller 63 transmits the signal respectively to three motor 62, three motor 62 begins to operate according to the instruction, and through display 65 with running state, the time of having run, data transmission such as interval time between the adjacent number of times of operation show to display 65, it is quick accurate and conveniently to look over, therefore, the clothes hanger is strong in practicability. The operation key 66 is provided on the side of the display 65, or the operation key 66 is provided on the screen of the display 65 and the screen is touched.

A first infrared emitter is arranged on the side wall of the first connecting ring 26, a second infrared emitter is arranged on the side wall of the second connecting ring 35, infrared receivers corresponding to the first infrared emitter and the second infrared emitter one to one are arranged on the side wall in the shell 5, the infrared receivers are respectively arranged at positions corresponding to the first infrared emitter when the magnetic bead sample adding plate 2 is attached to the pore plate 1, and are arranged at positions corresponding to the second infrared emitter when the pressure plate 3 is attached to the magnetic bead sample adding plate 2 when the magnetic bead sample adding plate 2 is attached to the pore plate 1; the infrared emitter and the infrared receiver are respectively connected with the central controller 63; in this way, when the magnetic bead sample adding plate 2 is attached to the pore plate 1, the first infrared emitter is in signal matching with the corresponding infrared receiver, and the signal is transmitted to the central controller 63, and the central controller 63 controls the opening and closing of the motor 62 connected with the first threaded rod 24; when the magnetic bead sample adding plate 2 is attached to the pore plate 1, and the magnetic bead sample adding plate 2 is attached to the pressure plate 3, the second infrared emitter is matched with the corresponding infrared receiver signal, the signal is transmitted to the central controller 63, and the central controller 63 controls the opening and closing of the motor 62 connected with the second threaded rod 33. After the magnetic bead sample adding plate 2, the pore plate 1 and the pressing plate 3 are attached, the pressing plate 3 and the magnetic bead sample adding plate 2 can be separated one by operating the operation keys 66, and the magnetic bead sample adding plate 2 and the pore plate 1 can be separated

When in use, the magnetic bead or other target liquid with specified volume is pre-stored in the magnetic bead sample adding plate 2, and is placed at the upper end of the tray 4 supported by the first connecting rod 23, the pore plate 1 is placed at the upper end of the tray 4 in the movable frame 13, and the pressing plate 3 is placed at the upper end of the tray 4 supported by the second connecting rod 32; the positions of the magnetic bead adding sample plates 2 relative to the pore plate 1 are respectively adjusted through the control assembly 6, the positions of the pressing plates 3 relative to the magnetic bead adding sample plates 2 are released to the pore plate 1 through the pressing plates 3, and the magnetic beads or other liquid in the magnetic bead adding sample plates 2 are released by the pressing plates 3. After the magnetic beads and the liquid in the sample plate 2 are released successfully, the magnetic beads or other target liquids with specified volumes stored in advance are replaced.

The above description of the embodiments is only intended to illustrate the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several modifications can be made to the present invention, and these modifications will fall within the protection scope of the claims of the present invention.

Claims (10)

1. A magnetic bead sample injector convenient to operate comprises a pore plate, a magnetic bead sample adding plate and a pressing plate, and is characterized in that the pressing plate is positioned at the upper end of the magnetic bead sample adding plate, and the magnetic bead sample adding plate is positioned at the upper end of the pore plate; the pore plate is provided with a first through hole; the magnetic bead sample adding plate is provided with a second through hole vertically corresponding to the first through hole, and the lower end of the magnetic bead sample adding plate is provided with an accommodating tube for accommodating magnetic beads; the pressing plate lower extreme is provided with the pipe that stretches into that corresponds from top to bottom with the second through-hole, stretches into through the second through-hole and holds intraduct.

2. The handy magnetic bead injector as claimed in claim 1, wherein the first through holes are arranged in a grid array.

3. An easy-to-handle magnetic bead sample applicator as defined in claim 1 wherein a liquid containing tube is provided at the lower end of the well plate and is connected to the first through hole, and the center of the liquid containing tube and the center of the first through hole are mapped to form a point.

4. The handy magnetic bead injector as claimed in claim 1, wherein the center of the receiving tube, the center of the second through hole, the center of the first through hole and the center of the protruding tube are mapped to a point.

5. An applicator for magnetic beads convenient for handling according to any of claims 1 to 4, wherein the bottom end of the containing tube is provided with a membrane.

6. The sample applicator for magnetic beads according to claim 5, wherein the thickness of the bottom region of the thin film is smaller than that of the side region of the thin film.

7. The sample applicator for magnetic beads convenient for operation as claimed in any one of claims 1 to 4, wherein the outer diameter of the bottom end of the containing tube is smaller than the inner diameter of the first through hole.

8. An easy-to-handle magnetic bead injector as in any of claims 1-4, characterized in that the outer diameter of the inlet tube is smaller than the inner diameter of the second through hole.

9. The sample applicator for magnetic beads convenient to operate as claimed in any one of claims 1 to 4, wherein the lower end of the magnetic bead sample application plate is provided with a first height adjustment structure; the first height adjusting structure comprises a tray arranged at the lower end of the magnetic bead sample adding plate, a first connecting rod and a first threaded rod, wherein the first connecting rod and the first threaded rod are sequentially connected with the tray; the first connecting rod vertically moves up and down along the first threaded rod.

10. The handy magnetic bead injector as set forth in any of claims 1 to 4, wherein the lower end of the pressure plate is provided with a second height adjusting structure comprising a tray provided at the lower end of the pressure plate, and a second connecting rod, a second threaded rod, which are connected in series with the tray; the second connecting rod vertically moves up and down along the second threaded rod.

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