Disposable suction head detaching device for multichannel pipettor

Abstract

The utility model discloses a disposable suction head detaching device for a multichannel pipettor. The disposable suction head detaching device comprises a box body, a support is arranged at the top of one side of the box body, a needle-shaped comb tooth seat is arranged in the support, a plurality of through holes are formed in the needle-shaped comb tooth seat, conical needle teeth are arranged in each through hole, and a plurality of parallel conical needle teeth are combined to form a needle-shaped tooth comb; a pipe pushing device is arranged on the inner side of the needle-shaped comb tooth base and the inner side of the support. A wedge-shaped balance weight is further arranged at the bottom of the box body, an opening is formed in the side, at the lower end of the wedge-shaped balance weight, of the box body, and a box door is arranged outside the opening. The device can adapt to tube withdrawing operation of disposable suction heads of different models, the suction heads clamped between the conical needle-shaped tooth grates can be pushed out at a time through the tube pushing device and fall into the collecting box, then the suction heads are guided into the opening through the wedge-shaped balance weight, and the suction heads can be discharged and then treated in a unified mode after the box door is opened. The sucker stripping device is simple in structure, reasonable in design, capable of stripping a plurality of suckers at a time, time-saving and labor-saving, and capable of avoiding cross contamination.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental tools, in particular to a disposable tip detaching device for a multi-channel pipette. Background Art

[0002] At present, the commonly used manual multi-channel pipettes on the market are mainly 8-channel pipettes and 12-channel pipettes. The use of multi-channel pipettes for pipetting operations mainly includes six steps: installing the suction tip, setting the range, pre-washing the suction tip, absorbing liquid, discharging liquid, and withdrawing the suction tip. After the pipetting process is completed, the suction tip is withdrawn by pressing the suction tip withdrawal arm to withdraw the discarded suction tip into the waste liquid bucket. Generally speaking, when installing the suction tip, in order to ensure that the suction tip will not loosen and fall off during the discharge, a certain force is required to make the pipette and the suction tip fit tightly, which is easy to cause the suction tip to be withdrawn. Sometimes, it is necessary to clamp the suction tip with tweezers to withdraw it, which is time-consuming and labor-intensive, and it is easy to touch the pipette tube accidentally to cause cross contamination. Therefore, it is necessary to develop a disposable suction tip removal device for a multi-channel pipette with simple structure, reasonable design, and the ability to withdraw multiple suction tips at one time, which saves time and effort and can also avoid cross contamination. Utility Model Content

[0003] The utility model aims to provide a disposable tip removal device for a multi-channel pipette which has a simple structure, a reasonable design, can remove multiple tips at one time, saves time and effort, and can avoid cross contamination.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a disposable tip detaching device for a multi-channel pipette, comprising a box body, a bracket is arranged on the top of one side of the box body, a needle-shaped comb tooth seat is arranged in the bracket, a plurality of through holes are provided in the needle-shaped comb tooth seat, each through hole is provided with a conical needle tooth, and a plurality of parallel conical needle teeth are combined to form a needle-shaped tooth comb; a tube pushing device is arranged on the inner side of the needle-shaped comb tooth seat and the bracket; a wedge-shaped counterweight is also arranged at the bottom of the box body, and an opening is arranged on the lower end side of the wedge-shaped counterweight of the box body, and a box door is arranged outside the opening.

[0005] Furthermore, the pipe pushing device includes a fixed hook, a movable hook, a slide plate, a spring, a push plate, an upper slide and a lower slide. One end of the fixed hook is installed on the bracket and the needle-shaped comb tooth seat, and the other end is movably connected to the movable hook. The other end of the movable hook is connected to the slide plate. The slide plate is connected to the push plate through a spring. The inner sides of the upper slide and the lower slide are respectively connected to the bracket and the needle-shaped comb tooth seat, and a baffle is provided on the outer side. The slide plate is slidably installed between the upper slide and the lower slide.

[0006] Furthermore, one end of the conical needle tooth is fixedly installed in the needle-shaped comb tooth seat, and the other end passes through the needle-shaped comb tooth seat and is suspended above the box body.

[0007] Furthermore, the centerline distance between two adjacent conical needle teeth matches the centerline distance between disposable pipette tips installed on two adjacent pipette tubes of the multichannel pipette.

[0008] The beneficial effects of the utility model are as follows: the utility model arranges a needle-shaped toothed grate with a conical structure above the collection box, and inserts pipette tips of different numbers into the gaps in the conical needle-shaped toothed grate. By adjusting the position, the pipette tips of different models can be adapted to the withdrawal operation, and the pipette tips inserted into the gaps in the conical needle-shaped toothed grate are pushed out at one time through the tube pushing device and then fall into the collection box, and are guided into the opening by the wedge-shaped counterweight. The pipette tips can be discharged and processed uniformly by opening the box door. The utility model has a simple structure and a reasonable design, and can withdraw multiple pipette tips at the same time. The operation is very convenient, time-saving and labor-saving, and cross contamination can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0010] Figure 2 for Figure 1 Enlarged view of part I in the middle;

[0011] Figure 3 for Figure 1 Middle AA section view;

[0012] In the figure: 1-wedge-shaped counterweight, 2-box, 21-opening, 22-box door, 3-disposable pipette tip, 4-conical needle teeth, 5-multichannel pipette, 6-tube pushing device, 61-fixed hook, 62-movable hook, 63-slide plate, 64-upper slide, 65-baffle, 66-push plate, 67-spring, 68-lower slide, 7-needle comb tooth seat, 8-bracket. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0014] See also Figure 1-3The utility model provides a technical solution, a multi-channel pipette disposable tip detaching device, including a box body 2, a bracket 8 is arranged on the top of one side of the box body 2, a needle-shaped comb tooth seat 7 is arranged in the bracket 8, a plurality of through holes are provided in the needle-shaped comb tooth seat 7, each of the through holes is provided with a conical needle tooth 4, and a plurality of parallel conical needle teeth 4 are combined to form a needle-shaped tooth comb; a tube pushing device 6 is arranged on the inner side of the needle-shaped comb tooth seat 7 and the bracket 8; a wedge-shaped counterweight 1 is also arranged at the bottom of the box body 2, and an opening 21 is arranged on the lower end side of the wedge-shaped counterweight 1 of the box body 2, and a box door 22 is arranged outside the opening 21.

[0015] Furthermore, the pipe pushing device 6 includes a fixed hook 61, a movable hook 62, a slide plate 63, a spring 67, a push plate 66, an upper slide 64 and a lower slide 68. One end of the fixed hook 61 is installed on the bracket 8 and the needle-shaped comb tooth seat 7, and the other end is movably connected to the movable hook 62. The other end of the movable hook 62 is connected to the slide plate 63. The slide plate 63 is connected to the push plate 66 through the spring 67. The inner sides of the upper slide 64 and the lower slide 68 are respectively connected to the bracket 8 and the needle-shaped comb tooth seat 7. A baffle 65 is provided on the outer side. The slide plate 63 is slidably installed between the upper slide 64 and the lower slide 68.

[0016] Furthermore, one end of the conical needle tooth 4 is fixedly installed in the needle-shaped comb tooth seat 7, and the other end passes through the needle-shaped comb tooth seat 7 and is suspended above the box body 2.

[0017] Furthermore, the distance between the center lines of two adjacent conical needle teeth 4 matches the distance between the centers of the disposable pipette tips 3 installed on two adjacent pipette tubes of the multi-channel pipette 5 .

[0018] When the utility model is used, the disposable suction head at the bottom of the multi-channel pipette is first inserted into the needle-shaped toothed grate of the conical structure, and the position is adjusted to make the disposable suction head and the gap of the conical needle-shaped toothed grate clamped, and then the multi-channel pipette is pulled upward with force, at this time, the disposable suction head is clamped in the gap of the needle-shaped toothed grate, and then the movable hook in the tube pushing device is opened, and the compressed spring restores the natural length, driving the slide plate to slide in the upper slide and the lower slide, and pushing the push plate to move in the direction of the disposable suction head, so that the disposable suction head stuck in the gap of the needle-shaped toothed grate is pushed out and falls into the collection box, and then introduced into the opening by the wedge-shaped counterweight, and the suction head can be discharged by opening the box door and then uniformly processed. The device can adapt to the withdrawal operation of disposable suction heads of different models, has a simple structure, reasonable design, convenient operation, time-saving and labor-saving, and can also avoid cross contamination.

Claims

1. A disposable tip removal device for a multi-channel pipette, characterized in that: The invention comprises a box body (2), a bracket (8) is arranged on the top of one side of the box body (2), a needle-shaped grate tooth seat (7) is arranged in the bracket (8), a plurality of through holes are provided in the needle-shaped grate tooth seat (7), a conical needle tooth (4) is arranged in each through hole, and a plurality of parallel conical needle teeth (4) are combined to form a needle-shaped tooth grate; a pipe pushing device (6) is arranged on the inner side of the needle-shaped grate tooth seat (7) and the bracket (8); a wedge-shaped counterweight (1) is also arranged at the bottom of the box body (2), an opening (21) is arranged on the lower end side of the wedge-shaped counterweight (1) of the box body (2), and a box door (22) is arranged outside the opening (21).

2. A disposable tip detaching device for a multi-channel pipette according to claim 1, characterized in that: The pipe pushing device (6) comprises a fixed hook (61), a movable hook (62), a slide plate (63), a spring (67), a push plate (66), an upper slideway (64) and a lower slideway (68). One end of the fixed hook (61) is mounted on the bracket (8) and the needle-shaped comb tooth seat (7), and the other end is movably connected to the movable hook (62). The other end of the movable hook (62) is connected to the slide plate (63). The slide plate (63) is connected to the push plate (66) via the spring (67). The inner sides of the upper slideway (64) and the lower slideway (68) are respectively connected to the bracket (8) and the needle-shaped comb tooth seat (7). A baffle plate (65) is arranged on the outer sides. The slide plate (63) is slidably mounted between the upper slideway (64) and the lower slideway (68).

3. A disposable tip detaching device for a multi-channel pipette according to claim 1, characterized in that: One end of the conical needle tooth (4) is fixedly mounted in the needle-shaped comb tooth seat (7), and the other end passes through the needle-shaped comb tooth seat (7) and is suspended above the box body (2).

4. A disposable tip detaching device for a multi-channel pipette according to claim 1, characterized in that: The centerline distance between two adjacent conical needle teeth (4) matches the centerline distance between the disposable pipette tips (3) mounted on two adjacent pipette tubes of the multichannel pipette (5).

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