Pipette head with side blowing function

Abstract

The utility model discloses a pipette head with a side blowing function. The pipette head comprises a pipette head body, a pipette head opening is formed in the top of the pipette head body, a sealing device is arranged at the pipette head opening, a liquid inlet is formed in the lower portion of the pipette head body, a liquid outlet is formed in the side portion of the pipette head body, and blocking devices are arranged at the liquid inlet and the liquid outlet. The blocking device comprises a built-in inner baffle arranged at the liquid inlet and a built-out outer baffle arranged at the liquid outlet, the inner baffle is opened inwards, and the outer baffle is opened outwards. The utility model provides a pipette head with a side blowing function, which is convenient for quickly blowing away sediments adsorbed on the wall of a container.

Description

Technical Field

[0001] The utility model relates to the field of laboratory technical equipment, in particular to a pipette tip with a side-blowing function. Background Art

[0002] In medical treatment, pharmaceuticals, gene and protein research, biological research, drug development laboratories and other biotechnology application fields, it is often necessary to use pipettes for various operations, including transferring solutions, mixing liquids, and flushing samples remaining on the side walls of containers. When centrifugation is used to separate and purify samples, the precipitate after centrifugation often adheres to the side walls of the container, and as the centrifugal force increases, the adhesion of the precipitate to the side walls will also increase. At the same time, due to the centrifugal angle, the precipitate after centrifugation often adheres to the side walls of the container, and the adhered precipitate is a certain distance from the bottom of the container. As a result, when we use a combination of a pipette and a gun tip to resuspend the side wall precipitate, we are often limited by the space distance, resulting in inconvenience in operation or incomplete flushing, resulting in sample loss.

[0003] A variety of pipette tips have been published in the prior art. For example, patent CN202221939371.2 discloses a pipette tip suitable for pipettes of different specifications, and patent CN202221068977.3 provides a pipette tip that is designed to be easily stored through components such as card strips and card slots. There are also some pipette tips with special uses, such as patent CN202222632021.8 provides a pipette tip and a pipette for embryo culture, and patent CN202223474544.0 provides a pipette tip that is convenient for crushing gels. However, in the existing patent technology, there is no tip with a container side wall blowing function. Therefore, in order to better enable the combination of the pipette and the tip to blow or resuspend the substances adhered to the side wall, we intend to design a pipette tip with a side blowing function. Utility Model Content

[0004] The technical problem to be solved by the utility model is that when a sample is separated and purified by centrifugation, the precipitate after centrifugation often adheres to the side wall of the container, and as the centrifugal force increases, the strength of the precipitate after centrifugation adhering to the side wall will also increase. At the same time, due to the problem of centrifugal angle, the precipitate after centrifugation often adheres to the side wall of the container, and the adhered precipitate is a certain distance from the bottom of the container, resulting in that when we use a combination of a pipette and a gun head to resuspend the precipitate on the side wall, we are often limited by the spatial distance, resulting in inconvenient operation or incomplete rinsing, leading to sample loss.

[0005] In order to solve the above technical problems, the utility model adopts the following technical means:

[0006] A pipette gun tip with a side-blowing function comprises a pipette gun tip body; a gun tip opening is provided at the top of the pipette gun tip body, a sealing device is provided at the gun tip opening, a liquid inlet is provided at the bottom of the pipette gun tip body, a liquid outlet is provided at the side of the pipette gun tip body, and blocking devices are provided at the liquid inlet and the liquid outlet, and the blocking device comprises an inner baffle plate built into the liquid inlet and an outer baffle plate externally provided at the liquid outlet, the inner baffle plate opens inwardly, and the outer baffle plate opens outwardly. The utility model provides a pipette gun tip with a side-blowing function, which is convenient for quickly blowing away the sediment adsorbed on the container wall.

[0007] As a preferred embodiment, a further technical solution of the utility model is:

[0008] The pipette gun head body is in a conical shape, the diameter of the gun head opening is larger than the diameter of the liquid inlet, the gun head opening and the liquid inlet are connected by an annular side wall, and a cavity is arranged in the pipette gun head body.

[0009] The diameter of the liquid inlet and the diameter of the liquid outlet match each other.

[0010] The diameter of the gun tip and the diameter of the part where the pipette is connected match each other.

[0011] The sealing device is a sealing ring, which surrounds the joint of the gun head opening and the part where the pipette gun is connected, and forms a sleeve-like structure.

[0012] When the pipette tip body absorbs liquid, under the action of atmospheric pressure, the inner baffle opens and the outer baffle closes, and the liquid in the container enters the pipette tip body from the liquid inlet.

[0013] When the pipette gun head body discharges liquid, under the action of atmospheric pressure, the inner baffle is closed and the outer baffle is opened, and the liquid in the pipette gun head body is sprayed out from the liquid outlet.

[0014] The length of the pipette gun head body is 70-80 mm.

[0015] The pipette gun head body is made of polypropylene or polytetrafluoroethylene.

[0016] The liquid inlet of the gun tip in the utility model is located below the gun tip, which is convenient for sucking the solution at the bottom of the container, and the liquid outlet is located on the side of the gun tip, which is convenient for blowing and washing the sample adhering to the side wall of the container. The utility model can better blow and wash the precipitation adhering to the side wall, and prevent the sample from being lost due to inadequate blowing and washing. At the same time, the added soft rubber layer can make the gun tip and the nozzle of the pipette gun contact more closely to achieve sealing, and the sealing effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a structural schematic diagram of a specific embodiment of the utility model.

[0018] Explanation of reference numerals: 01 sealing ring; 02 inner baffle; 03 liquid inlet; 04 liquid outlet; 05 outer baffle. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the embodiments. Specific embodiments

[0020] See also Figure 1 It can be seen that the utility model is a pipette tip with a side-blowing function. The tip can be tightly connected to the pipette through a sealing ring, and the combination of the pipette and the tip is used to absorb the liquid in the container. When the tip absorbs the liquid, due to the effect of atmospheric pressure, the inner baffle 02 opens and the outer baffle 05 closes, and the liquid in the container enters the tip from the liquid inlet 03. When the tip discharges the liquid, under the effect of atmospheric pressure, the inner baffle 02 closes and the outer baffle 05 opens, and the liquid in the tip is sprayed out from the liquid outlet 04 to rinse the side wall of the container. Specific embodiments

[0021] See also Figure 1 It can be seen that the utility model is a pipette tip with a side-blowing function, comprising a tip body, the tip body is made of polypropylene or polytetrafluoroethylene, the tip is reusable, and can be sterilized with high-temperature and high-pressure steam; the length of the pipette tip is 70-80mm; a sealing layer is provided at the portion where the tip mouth of the tip is connected to the pipette, and the sealing layer surrounds the tip mouth to form a sleeve-like structure; a liquid inlet is provided at the bottom of the tip body, a liquid outlet is provided at the side of the tip, a built-in baffle is provided at the liquid inlet, the baffle opens inwardly, and an external baffle is provided at the liquid outlet, the baffle opens outwardly.

[0022] Since the above is only a specific implementation method of the present utility model, the protection of the present utility model is not limited thereto, and any equivalent changes or substitutions of the technical features of the technical solution that can be thought of by any technician in this technical field are included in the protection scope of the present utility model.

Claims

1. A pipette tip with a side-blowing function, comprising a pipette tip body; characterized in that: A pipette gun head body is provided with a gun head opening at the top, a sealing device is provided at the gun head opening, a liquid inlet is provided at the bottom of the pipette gun head body, a liquid outlet is provided at the side of the pipette gun head body, and blocking devices are provided at the liquid inlet and the liquid outlet. The blocking device includes an inner baffle plate built into the liquid inlet and an outer baffle plate externally arranged at the liquid outlet, the inner baffle plate opens inwardly, and the outer baffle plate opens outwardly.

2. A pipette tip with side-blowing function according to claim 1, characterized in that: The pipette gun head body is in a conical shape, the diameter of the gun head opening is larger than the diameter of the liquid inlet, the gun head opening and the liquid inlet are connected by an annular side wall, and a cavity is arranged in the pipette gun head body.

3. A pipette tip with side-blowing function according to claim 1, characterized in that: The diameter of the liquid inlet and the diameter of the liquid outlet match each other.

4. A pipette tip with side-blowing function according to claim 1, characterized in that: The diameter of the gun tip and the diameter of the part where the pipette is connected match each other.

5. A pipette tip with side-blowing function according to claim 1, characterized in that: The sealing device is a sealing ring, which surrounds the joint of the gun head opening and the part where the pipette gun is connected, and forms a sleeve-like structure.

6. A pipette tip with side-blowing function according to claim 1, characterized in that: When the pipette tip body absorbs liquid, under the action of atmospheric pressure, the inner baffle opens and the outer baffle closes, and the liquid in the container enters the pipette tip body from the liquid inlet.

7. A pipette tip with side-blowing function according to claim 1, characterized in that: When the pipette gun head body discharges liquid, under the action of atmospheric pressure, the inner baffle is closed and the outer baffle is opened, and the liquid in the pipette gun head body is sprayed out from the liquid outlet.

8. The pipette tip with side-blowing function according to claim 1, characterized in that: The length of the pipette gun head body is 70-80 mm.

9. A pipette tip with side-blowing function according to claim 1, characterized in that: The pipette gun head body is made of polypropylene or polytetrafluoroethylene.

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