Pipette

Abstract

The utility model discloses a pipette. The pipette comprises a pipette body; a communicated shell is arranged below the pipette body; the shell is connected with a plurality of pipette tips; the plurality of pipette heads are integrally connected through a connecting part and are matched and inserted with the pipette body; a hollow supporting structure is arranged on the inner side of the pipette tip; filtering the liquid collected by the pipette tip; the multiple pipette heads are integrally connected through the connecting parts and are matched with the multiple first mounting parts at the position of the shell in an inserted connection mode, the matched friction force is increased through the anti-skid parts, the sealing performance of the pipette heads is improved, the hollowed-out supporting structures are arranged on the inner sides of the pipette heads, collected liquid is filtered, and the inner sides of the pipette heads are prevented from being blocked.

Description

Technical Field

[0001] The utility model relates to the field of medical testing instruments, in particular to a liquid transfer gun. Background Art

[0002] A pipette is a laboratory tool used to aspirate or dispense liquid samples. It mainly includes a handle, a tip rack, a tip, an adjustment button, a spring, a display window, and an unlock button. When collecting a large number of samples, a multi-porous pipette is generally used, which can significantly improve the efficiency of liquid processing. However, multi-porous pipettes also have some problems, such as poor tip sealing or tip blockage. If the seal between the pipette tip and the pipeline interface is poor, liquid leakage or incomplete liquid aspiration may occur. If any channel in the tip or pipette pipeline is blocked by sample residue or other impurities, it will cause uneven liquid aspiration or distribution, or even make it impossible to use normally, which will directly affect the accuracy and reliability of pipetting. Utility Model Content

[0003] The purpose of the utility model is to solve the shortcomings of the prior art and to provide a liquid transfer gun.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a pipette gun, comprising:

[0005] Pipette body;

[0006] A communicating shell is provided below the pipette body; the shell is connected to a plurality of pipette tips;

[0007] The plurality of pipette tips are integrally connected via a connecting portion and are plugged into the pipette body;

[0008] A hollow support structure is provided inside the pipette tip; and the liquid collected by the pipette tip is filtered.

[0009] As a further description of the above technical solution: a first mounting portion extending outwards is provided below the shell, and the first mounting portion is communicated with the volume cavity in the shell.

[0010] As a further description of the above technical solution: the pipette tip includes a second mounting portion, the inner side of which is provided with a raised anti-slip portion, and the second mounting portion is mated and plugged with the first mounting portion.

[0011] As a further description of the above technical solution: the second mounting portion is integrally provided with an extension portion, and the supporting structure is provided on the inner side of the extension portion to support the extension portion.

[0012] As a further description of the above technical solution: the other side of the extension portion is connected to the outside, and the end face of the extension portion is closed.

[0013] As a further description of the above technical solution: a plurality of through holes are opened under the shell and connected to the first mounting part, and a plurality of bendable isolation plates are provided on the inner walls of the through holes.

[0014] As a further description of the above technical solution: a communication component is provided on the inner side of the shell, and the communication component moves back and forth on the inner side of the shell.

[0015] As a further description of the above technical solution: the connecting component passes through the through hole, squeezes the isolation plate to deform, and is connected to the first mounting portion.

[0016] As a further description of the above technical solution: the communication component includes a movable plate and a plurality of communication holes arranged below the movable plate, and the communication holes correspond to the positions of the plurality of through holes below the shell.

[0017] As a further description of the above technical solution: a baffle is provided on one side of the movable plate, the baffle passes through the shell and extends to the outside, and the movable plate is adjusted to move by the baffle.

[0018] The above technical solution has the following advantages or beneficial effects:

[0019] 1. Multiple pipette tips are integrated and connected through the connecting part, and are plugged into multiple first mounting parts on the shell. The friction of the fit is increased by the anti-slip part to improve the sealing of the pipette tip. A hollow support structure is set inside the pipette tip to filter the collected liquid and prevent clogging inside the pipette. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the pipette gun proposed in the utility model;

[0021] Figure 2 for Figure 1 A partial enlarged view of point A in the middle.

[0022] Legend:

[0023] 1. Pipette body; 2. Shell; 21. First mounting portion; 22. Isolation plate; 3. Pipette tip; 31. Support structure; 32. Second mounting portion; 33. Anti-slip portion; 34. Extension portion; 4. Connecting portion; 5. Connecting assembly; 51. Moving plate; 52. Connecting hole; 53. Baffle. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Reference Figure 1-Figure 2 The utility model provides an embodiment: a pipette gun, comprising: a pipette gun body 1; a connected shell 2 is provided below the pipette gun body 1; a plurality of pipette gun tips 3 are connected through the shell 2; the plurality of pipette gun tips 3 are integrally connected through a connecting portion 4 and plugged into the pipette gun body 1; a hollow support structure 31 is provided on the inner side of the pipette gun tip 3; and the liquid collected by the pipette gun tip 3 is filtered.

[0026] In this embodiment, multiple pipette tips 3 are integrated and connected through the connecting part 4, and are plugged into and matched with multiple first mounting parts 21 at the shell 2. The anti-slip part 33 increases the friction of the fit, thereby improving the sealing of the assembly between the pipette tip 3 and the shell 1. A hollow support structure 31 is provided on the inside of the pipette tip 3 to filter the collected liquid and prevent blockage inside the pipette.

[0027] The connecting portion 4 may be provided with a plurality of grooves to facilitate deformation of the connecting portion 4 , so that the pipette tips can be plugged in simultaneously or one by one when being assembled.

[0028] A first mounting portion 21 extending outward is provided below the housing 2 . The first mounting portion 21 is communicated with the volume cavity in the housing 2 .

[0029] In this embodiment, the shell 2 is connected to the first mounting portion 21, so that samples of the same type in multiple reagent cups can be collected at the same time. During the pipetting process, samples in multiple reagent bottles can be pipetted at the same time, thereby improving the pipetting efficiency.

[0030] The pipette tip 3 includes a second mounting portion 32 , an inner side of which is provided with a raised anti-slip portion 33 , and the second mounting portion 32 is mated and plugged with the first mounting portion 21 .

[0031] In this embodiment, the material of the anti-slip portion 33 is the same as that of the pipette tip 3, preferably rubber. The second mounting portion 32 and the first mounting portion 21 are transitionally matched, and the anti-slip portion 33 is deformed during insertion, thereby increasing the friction between the first mounting portion 21 and the second mounting portion 32 and improving the sealing of the pipette tip 3.

[0032] The second mounting portion 32 is integrally provided with an extension portion 34 , and the support structure 31 is provided inside the extension portion 34 to support the extension portion 34 ; the other side of the extension portion 34 is communicated with the outside, and the end face of the extension portion 34 is closed.

[0033] In this embodiment, the support structure 31 is in a grid shape, a concentric ring shape, a circular hole shape, etc., and the outer side is integrated with the pipette tip 3 to support the volume cavity inside the pipette tip 3. The material of the existing pipette tip 3 is generally polyethylene, polypropylene or silicone, etc., which are soft and transparent materials, which are convenient for observation during the sampling process. During the pipetting sampling process, the inside of the pipette tip 3 is in a negative pressure state. When the viscosity of the sample is large, the pipette tip 3 will be deformed to a certain extent, causing the sampling progress to be affected. By setting a support structure, the deformation of the pipette tip 3 can be reduced, and the collected sample can also be filtered to prevent impurities in the sample from clogging the pipette body 1.

[0034] The side of the extension portion 34 that is in communication with the outside world is closed, and the closing process can increase the structural strength and stability of the sampling end of the pipette tip 3. The closing can reduce deformation and improve the overall load-bearing capacity.

[0035] A plurality of through holes are provided at the bottom of the housing 2 and connected to the first mounting portion 21 . A plurality of bendable isolation plates 22 are provided on the inner walls of the through holes.

[0036] In this embodiment, one side of the isolation plate 22 is connected to the inner wall of the through hole of the shell 2. In a natural state, a plurality of isolation plates 22 separate the through hole of the shell 2 to prevent impurities from entering the volume cavity of the shell 2.

[0037] A communication component 5 is provided on the inner side of the shell 2 . The communication component 5 reciprocates on the inner side of the shell 2 . The communication component 5 passes through the through hole, squeezes the isolation plate 22 to deform, and communicates with the first mounting portion 21 .

[0038] In this embodiment, the connecting component 5 is controlled to move so as to squeeze the isolation plate 22 and deform the isolation plate 22 so as to connect the volume cavity of the housing 2 with the first mounting portion 21 for pipetting and sampling.

[0039] The connecting component 5 includes a movable plate 51 and several connecting holes 52 arranged below the movable plate 51, and the connecting holes 52 correspond to the positions of several through holes below the shell 2; a baffle 53 is provided on one side of the movable plate 51, and the baffle 53 passes through the shell 2 and extends to the outside, and the movable plate 51 is adjusted to move by the baffle 53.

[0040] In this embodiment, by pulling the baffle 53, the movable plate 51 is driven to move in the vertical direction. When pipetting is required, the movable plate 51 is moved downward so that the connecting hole 52 passes through the shell 2. When the pipette body 1 is performing pipetting sampling, the inner volume cavity of the shell 2 is connected to the first mounting part 21, and the first mounting part 21 is connected to the second mounting part 32, so that the pressure of the pipette body 1 and the pipette tip 3 is the same, and pipetting sampling can be performed. After sampling is completed, the connecting component is moved upward so that the isolation plate 22 returns to its natural state, separating the shell 2 and the pipette tip 3.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pipette, characterized in that: include: Pipette body (1); A communicating housing (2) is provided below the pipette body (1); the housing (2) is connected to a plurality of pipette tips (3); The plurality of pipette tips (3) are integrally connected via a connecting portion (4) and are plugged into the pipette body (1); A hollow support structure (31) is provided inside the pipette tip (3); and the liquid collected by the pipette tip (3) is filtered.

2. The pipette according to claim 1, characterized in that: A first mounting portion (21) extending outwards is provided below the shell (2), and the first mounting portion (21) is communicated with a volume cavity in the shell (2).

3. The pipette according to claim 2, characterized in that: The pipette tip (3) includes a second mounting portion (32), the inner side of which is provided with a raised anti-slip portion (33), and the second mounting portion (32) is mated and plugged with the first mounting portion (21).

4. The pipette according to claim 3, characterized in that: The second mounting portion (32) is integrally provided with an extension portion (34), and the support structure (31) is provided on the inner side of the extension portion (34) to support the extension portion (34).

5. The pipette according to claim 4, characterized in that: The other side of the extension portion (34) is in communication with the outside, and the end surface of the extension portion (34) is closed.

6. The pipette according to claim 2, characterized in that: A plurality of through holes are provided below the shell (2) and are connected to the first mounting portion (21), and a plurality of bendable isolation plates (22) are provided on the inner walls of the through holes.

7. The pipette according to claim 6, characterized in that: A communication component (5) is provided on the inner side of the shell (2), and the communication component (5) moves back and forth on the inner side of the shell (2).

8. The pipette according to claim 7, characterized in that: The communication component (5) passes through the through hole, squeezes the isolation plate (22) to deform, and communicates with the first mounting portion (21).

9. The pipette according to claim 7, characterized in that: The communication component (5) comprises a movable plate (51) and a plurality of communication holes (52) arranged below the movable plate (51), wherein the communication holes (52) correspond to the positions of the plurality of through holes below the housing (2).

10. The pipette according to claim 9, characterized in that: A baffle (53) is provided on one side of the movable plate (51), and the baffle (53) penetrates the housing (2) and extends to the outside, and the movable plate (51) is adjusted to move by the baffle (53).

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