CN209810211U - Detachable pipette - Google Patents

Abstract

The utility model discloses a detachable pipette, the pipette body is equipped with and shifts up the liquid pipe and move down the liquid pipe, shift up the liquid pipe and move down and be equipped with connection structure between the liquid pipe, connection structure for setting up the liquid pipe helical structure that shifts up of last pipette one end and move down the liquid pipe helical structure of liquid pipe one end, connection structure department is equipped with sealing device, shifts up the intraductal anti-suck-back device that is equipped with of liquid, the lower extreme that moves down the liquid pipe be most advanced, move down the liquid pipe and be equipped with down straight pipette, down the elbow pipette. The utility model provides a pipette which has simple structure and convenient use and can prevent the occurrence of suck-back or overflow in the use process; and simultaneously, the utility model provides a pipette of displaceable pipette head can select different size, straight head or elbow pipette according to the experiment demand. The selection of pipettes of different sizes has significant advantages in aspirating different amounts of liquid from different pore size containers.

Description

Detachable pipette

Technical Field

The utility model relates to an experiment consumptive material field, concretely relates to a pipette for moving get liquid, two kinds of pipette heads are bent, straight to the displaceable, can prevent suck-back pipette.

Background

The pipette is an indispensable tool in medical clinical examination, isotope exemption, scientific research units or related enterprises and public institutions such as chemical engineering, food and the like for experimental sampling. The existing pipettes have various disadvantages, firstly, the larger the existing specification, the larger the volume of the lower end thereof, and in addition, the more the existing pipettes are straight tubes, which all cause inconvenience in some experiments. For example, when a straight pipette is used for treating cells in a cell culture bottle, cells near the mouth and corners of the bottle cannot be blown, so that the phenomena of uneven blowing of the cells and incomplete cell recovery cause cell waste can occur. Some experiments need to remove a large amount of liquid in volume from a container with a small caliber, a large-specification pipette cannot extend into the container due to the fact that the diameter of the large-specification pipette is too large, and the small-specification pipette can only be used for measuring the liquid for multiple times.

In addition, the existing disposable pipettes are all stuffed with cotton at the tube ends, but the problems of suck-back, overflow, blockage and the like can be caused by slight carelessness in the use process, and liquid can be sucked into the filter element of the pipettes in serious cases, so that the pipettes are lost.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is that the straight tube pipette is when handling the cell in the cell culture bottle, and near the cell of blake bottle bottleneck and corner is blown and is beaten not to arrive, can appear that the cell blows and beats inhomogeneously, and the cell is retrieved and thoroughly causes the extravagant phenomenon of cell. Some experiments need to remove a large amount of liquid in volume from a container with a small caliber, a large-specification pipette cannot extend into the container due to the fact that the diameter of the large-specification pipette is too large, and the small-specification pipette can only be used for measuring the liquid for multiple times. The existing disposable pipettes are all stuffed with cotton at the tube ends, but the problems of suck-back, overflow, blockage and the like can be caused by slight carelessness in the use process, and liquid can be sucked into a filter element of the pipettes in serious cases, so that the pipettes are lost.

In order to solve the above technical problem, the utility model discloses a following technical means:

a removable pipette comprising a pipette body; the pipette body be equipped with and move up the liquid pipe and move down the liquid pipe, move up the liquid pipe and move down and be equipped with connection structure between the liquid pipe, connection structure for setting up the liquid pipe helical structure that moves up of last pipette one end and move down the liquid pipe helical structure that moves down of liquid pipe one end, connection structure department is equipped with sealing device, last liquid intraductal be equipped with and prevent down the suck-back device, the lower extreme that moves down the liquid pipe be most advanced, move down the liquid pipe and be equipped with down straight-headed pipette, down the elbow pipette. The utility model provides a pipette which has simple structure and convenient use and can prevent the occurrence of suck-back or overflow in the use process; and simultaneously, the utility model provides a pipette of displaceable pipette head can select different size, straight head or elbow pipette according to the experiment demand. The elbow pipette is used for blowing and beating cells, is flexible to operate, can achieve the effect of blowing and beating from multiple directions and multiple angles, and can blow and beat more uniformly and more thoroughly in corners. The selection of pipettes of different sizes has significant advantages in aspirating different amounts of liquid from different pore size containers.

Preferably, the present invention further provides:

the spiral structure of the upper liquid moving pipe is an external thread, the spiral structure of the lower liquid moving pipe is an internal thread, and the sizes of the internal thread and the external thread are matched with each other.

The sealing device is a leakage-proof rubber mat.

The anti-suck-back device is a filter element, and a through hole is formed in the filter element.

The specifications of the upper liquid transfer tube are 10ml and 25 ml.

The specifications of the lower pipette are 1ml, 5ml and 10ml, and the diameters of the pipette body are 0.3cm, 0.5cm and 0.75cm according to different specifications and sizes.

The straight-head pipette is a straight pipe, and the tip and the spiral structure of the lower pipette are arranged on the same plane.

The tip of the lower elbow pipette is bent to one side by 30-40 degrees.

The utility model relates to a detachable pipette, the detachable pipette that provides can select suitable volumetric liquid pipe that moves up and move down the liquid pipe according to the actual demand in the experimentation and make up, can swiftly, conveniently accurately move from the container and get required solution volume, and do not receive the restriction of container bore. The filter element arranged in the pipe tail end plug can prevent the occurrence of back suction or overflow in the use process; the utility model discloses an elbow pipette, its most advanced is bent to one side, consequently when blowing and beating the cell, the flexible operation can reach diversified, multi-angle blow and beat the effect to its most advanced can be just to the straight tube can not just right corner, consequently blow and beat more evenly, and the corner blows and beats more thoroughly.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of another embodiment of the present invention.

Description of reference numerals: 1. lower straight head pipette, 2, lower elbow pipette, 3, move down liquid pipe helical structure, 4, move up liquid pipe helical structure, 5, leak protection cushion, 6, filter core, 7, through-hole.

Detailed Description

The present invention will be further described with reference to the following examples.

Specific example 1:

referring to fig. 1, the detachable pipette of the present invention has a pipette body having an upper pipette and a lower pipette, a connection structure between the upper pipette and the lower pipette, the connection structure including an upper pipette spiral structure 4 at one end of the upper pipette and a lower pipette spiral structure 3 at one end of the lower pipette, a sealing device at the connection structure, a suck-back preventing device in the upper pipette, a tip at the lower end of the lower pipette, a lower pipette having a lower straight pipette 1 and a lower bent pipette 2, a bent tube having a bend angle of 30-40 degrees from the tip of the lower bent pipette 2 to one side, an outer screw thread at the upper pipette spiral structure 4, an inner screw thread at the lower pipette spiral structure 3, an inner screw thread and an outer screw thread of which are matched with each other, a leakproof cushion 5 as the sealing device, and a filter element 6 as the suck-back preventing device, the filter element 6 is provided with a through hole 7, and the specification of the upper liquid moving pipe is 10ml and 25 ml.

Referring to fig. 2, the utility model relates to a detachable pipette, the specification of moving liquid pipe down is 1ml, 5ml, 10ml, and pipette body diameter is 0.3cm, 0.5cm, 0.75cm respectively according to different specification and dimension, and the straight-end pipette is the straight tube, pointed end and the setting of moving liquid pipe helical structure 3 down on the coplanar.

Specific example 2:

referring to fig. 1 and fig. 2, the present invention provides a detachable pipette, which is a schematic structural diagram of the detachable pipette provided by the present invention. Wherein, the utility model provides a detachable pipette, include to go up the liquid pipe and move down the liquid pipe, connect through screw means 3, 4 between, seal through rubber seal 5.

Wherein, the pipe tail end that goes up the liquid pipe is equipped with one and filters stopper 6, filter the stopper including establishing the pipe tail end plug at this siphunculus tail end of pipette, the lower extreme of pipe tail end plug stretches into this siphunculus tail end of pipette in and this body of pipette links to each other, and its tip is equipped with a plurality of through-hole 77, and the open setting in upper end of pipe tail end plug is equipped with a filter core 6 in the pipe tail end plug, prevents that liquid from suck-back, causes not good influence to the pipettor. The specifications of the upper pipette are 10ml and 25 ml. During the use, insert the pipettor with the pipe tail end of pipette, the hand is held the pipettor and is accomplished the pipetting operation through the pipette, through the filter core 63 that sets up in pipe tail end plug 4, can prevent the suck-back that appears in the use or the emergence of the overfilling condition.

The lower end of the lower liquid moving pipe is a tip, one of the lower liquid moving pipe is a straight pipe, the other one of the lower liquid moving pipe is a bent pipe bent to one side by 30 ~ 45 degrees, the tip of the elbow pipette is bent to one side, so when cells are blown and beaten, the operation is flexible, the multi-direction and multi-angle blowing and beating effect can be achieved, the blowing and beating are more uniform, the corners are blown and beaten more thoroughly, the specifications of the lower liquid moving pipe are 1ml, 5ml and 10ml, the diameters of the pipette are respectively 0.3cm, 0.5cm and 0.75cm according to different specifications and sizes, the upper liquid moving pipe and the lower liquid moving pipe which are suitable for the volume can be selected to be combined according to the actual requirements in the experimental process, the required volume of the solution can be quickly and conveniently moved from.

Since the above description is only a specific embodiment of the present invention, but the protection of the present invention is not limited thereto, any person skilled in the art can think of equivalent changes or substitutions of the technical features of the present invention, and all are covered in the protection scope of the present invention.

Claims (8)

1. A removable pipette comprising a pipette body; the method is characterized in that: the pipette body be equipped with and move up the liquid pipe and move down the liquid pipe, move up the liquid pipe and move down and be equipped with connection structure between the liquid pipe, connection structure for setting up the liquid pipe helical structure that moves up of last pipette one end and move down the liquid pipe helical structure that moves down of liquid pipe one end, connection structure department is equipped with sealing device, last liquid intraductal be equipped with and prevent down the suck-back device, the lower extreme that moves down the liquid pipe be most advanced, move down the liquid pipe and be equipped with down straight-headed pipette, down the elbow pipette.

2. A removable pipette as set forth in claim 1 wherein: the spiral structure of the upper liquid moving pipe is an external thread, the spiral structure of the lower liquid moving pipe is an internal thread, and the sizes of the internal thread and the external thread are matched with each other.

3. A removable pipette as set forth in claim 1 wherein: the sealing device is a leakage-proof rubber mat.

4. A removable pipette as set forth in claim 1 wherein: the anti-suck-back device is a filter element, and a through hole is formed in the filter element.

5. A removable pipette as set forth in claim 1 wherein: the specifications of the upper liquid transfer tube are 10ml and 25 ml.

6. A removable pipette as set forth in claim 1 wherein: the specifications of the lower pipette are 1ml, 5ml and 10ml, and the diameters of the pipette body are 0.3cm, 0.5cm and 0.75cm according to different specifications and sizes.

7. A removable pipette as set forth in claim 1 wherein: the straight-head pipette is a straight pipe, and the tip and the spiral structure of the lower pipette are arranged on the same plane.

8. A removable pipette as set forth in claim 1 wherein: the tip of the lower elbow pipette is bent to one side by 30-40 degrees.