CN219596666U

CN219596666U - Pipette tip assembly

Info

Publication number: CN219596666U
Application number: CN202320386809.7U
Authority: CN
Inventors: 柴瑜; 程晓东; 唐继海; 王斌冰; 罗献伟; 江石; 周淑洁; 程鹏博; 徐华庆
Original assignee: Anhui Center For Disease Control And Prevention Provincial Institute Of Health Education Provincial Institute Of Public Health
Current assignee: Anhui Center For Disease Control And Prevention Provincial Institute Of Health Education Provincial Institute Of Public Health
Priority date: 2023-02-28
Filing date: 2023-02-28
Publication date: 2023-08-29
Anticipated expiration: 2033-02-28

Abstract

The pipette tip assembly comprises a tip and a tip box, wherein a plurality of tip accommodating holes allowing the tip to be inserted are formed in the tip box, notches are formed in the end portions of the tip accommodating holes in the direction away from the center, and protrusions are arranged on the tip corresponding to the notches; the suction head comprises a conical suction nozzle, a straight pipe section, a corrugated pipe section and a connecting pipe section which are sequentially connected, and the bulge is arranged on the outer wall of the straight pipe section. This pipettor suction head subassembly utilizes the design of bellows, is convenient for adjust the overall length of pipettor suction head, prevents to touch the container bottleneck and causes cross contamination, and the bellows can be crooked, is convenient for absorb the liquid of container internal corner department, through the scale mark, ensures at every turn that can both the sufficient imbibition.

Description

Pipette tip assembly

Technical Field

The utility model belongs to the technical field of pipette tips, relates to a pipette tip assembly, and in particular relates to a bendable lengthened pipette tip assembly with folds and scales.

Background

When the research in the aspect of analysis and test is carried out, a small amount or a small amount of liquid is generally removed by adopting a pipette, the length of the suction head of the existing 1000 mu L-adaptive pipette on the market at present is 78-102mm, the length of the suction head is smaller than the depth in a test tube, a centrifuge tube, a cell culture bottle and a cell culture tube, when the liquid at the bottom is removed, a gun rod of the pipette is easily caused to touch a tube orifice, the gun rod of the pipette is polluted, and when the pipette is used for pipetting for multiple times, the gun head is replaced each time, but the gun rod cannot be replaced, and pollutants on the gun rod can touch a subsequent tube orifice, so that the subsequent sample is polluted, and cross pollution is caused.

Therefore, in order to solve the problem that the liquid at the inner corners of the gun rod and the container of the pipette is easy to be polluted due to the short length and can not be sucked, the problem needs to be solved so as to improve the use scene of the pipette tip assembly.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a pipette tip assembly, which comprises a tip and a tip box, wherein the tip box is provided with a plurality of tip accommodating holes for allowing the insertion of the tip, the end part of the tip accommodating hole is provided with a notch towards the direction away from the center, and the tip is provided with a bulge corresponding to the notch; the suction head comprises a conical suction nozzle, a straight pipe section, a corrugated pipe section and a connecting pipe section which are sequentially connected, and the bulge is arranged on the outer wall of the straight pipe section; state one: the straight pipe section is arranged in a way that the bulge is abutted against the end part of the suction head accommodating hole (the bulge is not provided with a corresponding notch); state two: the connecting pipe section is connected with the liquid transfer device, and the liquid transfer device is moved in a direction away from the suction head box so as to stretch the corrugated pipe section; the rotary liquid transferring device is provided with a notch corresponding to the protrusion of the straight pipe section, and the liquid transferring device is moved in a direction away from the suction head box so as to enable the straight pipe section and the conical suction nozzle to be moved out of the suction head box.

The preferable technical scheme is as follows: the suction head box comprises a top plate, and the suction head accommodating hole is formed in the top plate; the two notches are symmetrically arranged at the end parts of the hole; the two protrusions are correspondingly arranged, and the two protrusions are symmetrically arranged on the straight pipe sections of the suction head.

The preferable technical scheme is as follows: the sum of the lengths of the conical suction nozzle, the straight pipe section, the corrugated pipe section and the connecting pipe section is 70-120mm.

The preferable technical scheme is as follows: the length of the bellows which is increased after being stretched is 20-40mm, and the adjustable angle range of the bellows is 0-90 degrees.

The preferable technical scheme is as follows: the height of the convex blocks is 1-4mm and is smaller than the depth of the notch; and the opening angle of the convex block is smaller than the angle of the notch.

The preferable technical scheme is as follows: the straight tube section is provided with graduation marks, and the corresponding pipetting volumes of the graduation marks are 100 mu L, 200 mu L, 300 mu L, 400 mu L, 500 mu L, 600 mu L, 700 mu L, 800 mu L, 900 mu L, 1000 mu L and 1100 mu L respectively.

(3) Advantageous effects

Compared with the prior art, the utility model has the beneficial effects that: the design of the corrugated pipe is adopted by the pipette suction head assembly, the whole length of the pipette suction head is convenient to adjust, cross contamination caused by collision with a container bottle mouth is prevented, the distance between the highest liquid level and the filter element can be correspondingly increased due to the increase of the whole length, liquid is not easy to splash to the filter element to cause pollution, the corrugated pipe can be bent, the liquid at the inner corner of the container is convenient to absorb, the monitoring effect is achieved through the scale marks, and the sufficient liquid suction capacity is ensured each time.

Drawings

FIG. 1 is a schematic perspective view of a suction head.

FIG. 2 is a schematic view of a suction head in a bent state of a bellows.

FIG. 3 is a schematic top view of the suction head.

Fig. 4 is a schematic diagram of a state.

FIG. 5 is a schematic view of a suction head without a filter cartridge.

FIG. 6 is a schematic view of a suction head with a filter cartridge.

The marks in the drawings are: 1. a suction head; 2. a suction head box; 3. a suction head accommodating hole; 4. a notch, 5 and a bulge; 6. a conical suction nozzle; 7. a straight pipe section; 8. a bellows section; 9. connecting pipe sections; 10. a top plate; 11. a filter element.

Detailed Description

Further advantages and effects of the present utility model will be readily apparent to those skilled in the art from the following disclosure of the present utility model by reference to the specific embodiments.

Please refer to fig. 1-6. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are shown only in the drawings and should not be taken as limiting the utility model to those having ordinary skill in the art, since modifications, changes in proportions, or adjustments of sizes, etc. could be made without departing from the spirit or essential characteristics of the utility model. The following examples are provided for a better understanding of the present utility model, but are not intended to limit the present utility model. The experimental methods in the following examples are conventional methods unless otherwise specified. The experimental materials used in the examples described below were purchased from conventional biochemical reagent stores unless otherwise specified.

A pipette tip assembly as shown in fig. 1, the pipette tip assembly comprises a tip 1 and a tip box 2, the tip box is provided with a plurality of tip accommodating holes 3 for allowing the insertion of the tip, the end of the tip accommodating hole is provided with a notch 4 towards the direction away from the center, and the tip is provided with a protrusion 5 corresponding to the notch; the suction head comprises a conical suction nozzle 6, a straight pipe section 7, a corrugated pipe section 8 and a connecting pipe section 9 which are sequentially connected, and the bulge is arranged on the outer wall of the straight pipe section; state one: the straight pipe section is arranged in a way that the bulge is abutted against the end part of the suction head accommodating hole (the bulge is not provided with a corresponding notch); state two: the connecting pipe section is connected with the liquid transfer device, and the liquid transfer device is moved in a direction away from the suction head box so as to stretch the corrugated pipe section; the rotary liquid transferring device is provided with a notch corresponding to the protrusion of the straight pipe section, and the liquid transferring device is moved in a direction away from the suction head box so as to enable the straight pipe section and the conical suction nozzle to be moved out of the suction head box.

The preferred embodiments are: the suction head box comprises a top plate 10, and the suction head accommodating hole is formed in the top plate; the two notches are symmetrically arranged at the end parts of the hole; the two protrusions are correspondingly arranged, and the two protrusions are symmetrically arranged on the straight pipe sections of the suction head.

The preferred embodiments are: the sum of the lengths of the conical suction nozzle, the straight pipe section, the corrugated pipe section and the connecting pipe section is 70-120mm.

The preferred embodiments are: the length of the bellows which is increased after being stretched is 20-40mm, and the adjustable angle range of the bellows is 0-90 degrees.

The preferred embodiments are: the height of the convex blocks is 1-4mm and is smaller than the depth of the notch; and the opening angle of the convex block is smaller than the angle of the notch.

The preferred embodiments are: the straight tube section is provided with graduation marks, and the corresponding pipetting volumes of the graduation marks are 100 mu L, 200 mu L, 300 mu L, 400 mu L, 500 mu L, 600 mu L, 700 mu L, 800 mu L, 900 mu L, 1000 mu L and 1100 mu L respectively.

As shown in fig. 5, there is no filter element, as shown in fig. 6, there is a filter element.

The foregoing description of the preferred embodiment of the utility model is not intended to be limiting in any way, but rather, it is intended to cover all modifications or variations of the utility model which fall within the spirit and scope of the utility model.

Claims

1. A pipette tip assembly, characterized in that: the pipette tip assembly comprises a tip and a tip box, wherein a plurality of tip accommodating holes allowing the tip to be inserted are formed in the tip box, notches are formed in the end portions of the tip accommodating holes in the direction away from the center, and protrusions are arranged on the tip corresponding to the notches; the suction head comprises a conical suction nozzle, a straight pipe section, a corrugated pipe section and a connecting pipe section which are sequentially connected, and the bulge is arranged on the outer wall of the straight pipe section; state one: the straight pipe section is arranged in a manner that the bulge is abutted against the end part of the suction head accommodating hole; state two: the connecting pipe section is connected with the liquid transfer device, and the liquid transfer device is moved in a direction away from the suction head box so as to stretch the corrugated pipe section; the rotary liquid transferring device is provided with a notch corresponding to the protrusion of the straight pipe section, and the liquid transferring device is moved in a direction away from the suction head box so as to enable the straight pipe section and the conical suction nozzle to be moved out of the suction head box.

2. The pipette tip assembly of claim 1 wherein: the suction head box comprises a top plate, and the suction head accommodating hole is formed in the top plate; the two notches are symmetrically arranged at the end parts of the hole; the two protrusions are correspondingly arranged, and the two protrusions are symmetrically arranged on the straight pipe sections of the suction head.

3. The pipette tip assembly of claim 1 wherein: the sum of the lengths of the conical suction nozzle, the straight pipe section, the corrugated pipe section and the connecting pipe section is 70-120mm.

4. The pipette tip assembly of claim 1 wherein the bellows increases in length from 20 to 40mm after stretching and the bellows is adjustable through an angle in the range of 0 to 90 degrees.

5. The pipette tip assembly of claim 1 wherein: the straight tube section is provided with graduation marks, and the corresponding pipetting volumes of the graduation marks are 100 mu L, 200 mu L, 300 mu L, 400 mu L, 500 mu L, 600 mu L, 700 mu L, 800 mu L, 900 mu L, 1000 mu L and 1100 mu L respectively.