Anti-pollution pipette head

Abstract

The utility model discloses an anti-pollution pipette head which comprises a pipette head main body, and a mounting part and a suction nozzle are respectively arranged at two ends of the pipette head main body; the anti-pollution films are arranged on the outer wall of the gun head body in a stacked mode, and the ends, away from the suction nozzle, of the anti-pollution films are arranged as film tearing ends. In the using process of the anti-pollution pipette head, after a first solution is completely sucked, a worker can directly tear off the anti-pollution film, then the same pipette head is directly used for sucking a second solution, and the anti-pollution pipette head is convenient to use by arranging the multiple layers of anti-pollution films. The previous solution can be prevented from being attached to the outer wall of the pipette head, so that the next solution is prevented from being polluted, and the accuracy of a detection structure of a test can be ensured.

Description

Technical Field

[0001] This utility model relates to the field of chemical detection technology, and in particular to anti-contamination pipette tips. Background Technology

[0002] In the experimental process of biological and pharmaceutical research, it is usually necessary to mix different samples before proceeding to the next step of sample testing. Currently, the common practice for mixing multiple samples is to insert the pipette tip into different sample solutions multiple times to draw different sample solutions, and then directly mix the different samples in the pipette tip.

[0003] However, after the pipette tip has finished dispensing the first solution, the first solution will adhere to the outer surface of the pipette tip. If the second solution is then directly drawn from the beaker containing the second solution, the first solution adhering to the pipette tip may contaminate the second solution in the beaker, leading to deviations in multiple test results and compromising the accuracy of the test. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a contamination-proof pipette tip to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0005] The solution to the technical problem of this utility model is:

[0006] Contamination-resistant pipette tips, including:

[0007] The gun head body has a mounting part and a suction nozzle at each end;

[0008] The anti-pollution film has multiple layers, which are stacked on the outer wall of the nozzle body. The end of the anti-pollution film away from the nozzle is designated as the tear-off end.

[0009] As a further improvement to the above technical solution, a solution mixing structure is fixed inside the main body of the gun head, which is used to mix multiple solutions evenly.

[0010] As a further improvement to the above technical solution, the solution mixing structure is configured as a spiral guide plate, the outer edge of the spiral guide plate abuts against the inner wall of the nozzle body, the spiral guide plate extends spirally, and a spiral mixing channel is formed between the spiral guide plate and the nozzle body.

[0011] As a further improvement to the above technical solution, the spiral guide vane is provided with an arc-shaped transition structure, and the spiral guide vane and the gun head body are transitioned through the arc-shaped transition structure.

[0012] As a further improvement to the above technical solution, the solution mixing structure is configured as a flat guide plate, and multiple flat guide plates are provided. The multiple flat guide plates are arranged in an alternating manner, and a serpentine mixing channel is formed between the flat guide plates and the nozzle body.

[0013] As a further improvement to the above technical solution, the flat guide vane is provided with an arc-shaped transition structure, and the flat guide vane and the gun head body are transitioned through the arc-shaped transition structure.

[0014] As a further improvement to the above technical solution, the solution mixing structure is configured as a convex structure, and multiple convex structures are provided, which are evenly distributed on the inner wall of the gun head body.

[0015] As a further improvement to the above technical solution, the length of the multiple layers of anti-pollution film gradually decreases in the direction away from the gun head body, so that the multiple tear-off ends are arranged in a stepped manner.

[0016] As a further improvement to the above technical solution, the tearing end is provided with a tearing edge, which is formed by winding the anti-pollution film.

[0017] As a further improvement to the above technical solution, the anti-pollution membrane has an elastic membrane structure.

[0018] The beneficial effects of this invention are: after the first solution is aspirated, the staff can directly tear off the anti-contamination film and then use the same pipette tip to aspirate the second solution. By setting multiple layers of anti-contamination film, the first solution can be prevented from adhering to the outer wall of the pipette tip, thus preventing the second solution from being contaminated, thereby ensuring the accuracy of the test structure.

[0019] This invention relates to the field of chemical detection technology. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model;

[0022] Figure 2 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model;

[0023] Figure 3 This is a schematic diagram of the overall structure of Embodiment 3 of this utility model;

[0024] Figure 4 This is a schematic diagram of the stacking of the anti-pollution film according to an embodiment of the present invention.

[0025] In the figure, 100 is the main body of the nozzle; 111 is the spiral guide vane; 112 is the straight guide vane; 113 is the convex structure; 120 is the arc transition structure; 200 is the anti-pollution membrane; 210 is the tear-off end; and 220 is the tear-off edge. Detailed Implementation

[0026] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages mentioned herein do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this invention can be combined interactively without contradicting each other.

[0027] Example 1:

[0028] Reference Figure 1 and Figure 4 The anti-contamination pipette tip includes a tip body 100 and an anti-contamination membrane 200.

[0029] The pipette tip body 100 has the structure of a conventional pipette tip. The two ends of the pipette tip body 100 are respectively provided as a mounting part and a nozzle. The mounting part is used to connect to a pipette.

[0030] The number of anti-contamination membranes 200 is set to be multiple, and the multiple layers of anti-contamination membranes 200 are stacked on the outer wall of the nozzle body 100. The anti-contamination membrane 200 closest to the nozzle body 100 is tightly attached to the outer wall of the nozzle body 100, and the two adjacent layers of anti-contamination membranes 200 are tightly attached to each other, so as to prevent the solution from seeping into the space between the two layers of anti-contamination membranes 200 and thus prevent the anti-contamination membranes 200 from being contaminated.

[0031] The end of the anti-pollution film 200 near the installation part is set as the tear-off end 210.

[0032] After the first solution is aspirated, the staff can directly tear off the anti-contamination membrane 200 and then use the same pipette tip to aspirate the second solution. By setting up multiple layers of anti-contamination membranes 200, the first solution can be prevented from adhering to the outer wall of the pipette tip, thus preventing the second solution from being contaminated and ensuring the accuracy of the test results.

[0033] Setting the number of anti-contamination membranes 200 to multiple layers can increase the number of times the anti-contamination pipette tip in this solution can be used.

[0034] Specifically, in this embodiment, the anti-fouling membrane 200 is configured as an elastic member and can be made of materials such as rubber. Those skilled in the art can select the specific material of the anti-fouling membrane 200 according to actual needs. By configuring the anti-fouling membrane 200 as an elastic member, adjacent layers of anti-fouling membrane 200 can be kept in close contact, thereby preventing the solution from seeping between the two layers of anti-fouling membrane 200 and effectively preventing the anti-fouling membrane 200 from being contaminated.

[0035] Specifically, in this embodiment, the length of the anti-contamination film 200 gradually decreases in the direction away from the pipette tip body 100, thereby arranging the tear-off ends 210 of the multi-layer anti-contamination film 200 in a stepped manner. Setting the tear-off ends 210 of the multi-layer anti-contamination film 200 in a stepped arrangement can greatly prevent the operator from tearing off multiple layers of anti-contamination film 200 simultaneously, thus ensuring the number of uses of this anti-contamination pipette tip.

[0036] Specifically, in this embodiment, the tear-off end 210 is provided with a tear-off edge 220, which is formed by winding the anti-contamination film 200. By providing the tear-off edge 220, the operator can tear off the outermost anti-contamination film 200 by pulling the tear-off edge 220 without first separating the ends of the two adjacent anti-contamination films 200 before tearing the film. This makes it easier to separate the two adjacent anti-contamination films 200, which is beneficial to improving the detection efficiency.

[0037] Specifically, in this embodiment, a solution mixing structure is fixedly disposed inside the nozzle body 100. The solution mixing mechanism is used to uniformly mix multiple solutions.

[0038] Specifically, in this embodiment, the solution mixing structure is configured as a spiral guide plate 111, which extends spirally along the length of the nozzle body 100. The inner sidewall of the nozzle body 100 is in close contact with the outer edge of the spiral guide plate 111, and a spiral mixing channel is formed between the inner wall of the nozzle body 100 and the spiral guide plate 111. By setting the spiral mixing channel, the solution movement path in the nozzle body 100 increases during the liquid absorption and discharge process, which is more conducive to the mixing of different solutions.

[0039] Specifically, in this embodiment, the spiral guide vane 111 and the inner wall of the nozzle body 100 are transitioned by an arc-shaped transition structure 120, which can avoid the formation of corners and thus prevent solution residue at the corners, so as to ensure that the solution in the nozzle body 100 can be discharged, thereby ensuring the accuracy of solution quantification.

[0040] Example 2:

[0041] Reference Figure 2 Unlike other embodiments, in this embodiment, the solution mixing structure is configured with multiple straight guide vanes 112 arranged vertically, with adjacent vanes staggered. A serpentine mixing channel is formed between the multiple straight guide vanes 112 and the nozzle body 100. By setting the serpentine mixing channel, the solution movement path within the nozzle body 100 is increased during liquid absorption and discharge, thus facilitating the mixing of different solutions.

[0042] Specifically, in this embodiment, the straight guide vane 112 and the inner wall of the nozzle body 100 are transitioned by an arc-shaped transition structure 120, which can avoid the formation of corners and thus prevent solution residue at the corners, so as to ensure that the solution in the nozzle body 100 can be discharged, thereby ensuring the accuracy of solution quantification.

[0043] Example 3:

[0044] Reference Figure 3 Unlike other embodiments, in this embodiment, the solution mixing structure is configured as a protrusion structure 113, and multiple protrusion structures 113 are provided, which are evenly distributed on the inner wall of the nozzle body 100. Specifically, the protrusion structure 113 is configured as a hemispherical protrusion structure. In other embodiments, the protrusion structure 113 may also be configured as a square protrusion structure or other protrusions. Those skilled in the art can select the specific construction of the protrusion structure 113 according to actual needs.

[0045] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A contamination-resistant pipette tip, characterized in that: include: The gun head body has a mounting part and a suction nozzle at each end; The anti-pollution film has multiple layers, which are stacked on the outer wall of the nozzle body. The end of the anti-pollution film away from the nozzle is designated as the tear-off end.

2. The anti-contamination pipette tip according to claim 1, characterized in that: The nozzle body has a solution mixing structure fixed inside, which is used to mix multiple solutions evenly.

3. The anti-contamination pipette tip according to claim 2, characterized in that: The solution mixing structure is configured as a spiral guide plate, the outer edge of which abuts against the inner wall of the nozzle body, the spiral guide plate extends spirally, and a spiral mixing channel is formed between the spiral guide plate and the nozzle body.

4. The anti-contamination pipette tip according to claim 3, characterized in that: The spiral guide vane has an arc-shaped transition structure, and the spiral guide vane and the gun head body are connected by the arc-shaped transition structure.

5. The anti-contamination pipette tip according to claim 2, characterized in that: The solution mixing structure is configured as a flat guide vane, and multiple flat guide vanes are provided. The multiple flat guide vanes are arranged in an alternating pattern, and a serpentine mixing channel is formed between the flat guide vanes and the nozzle body.

6. The anti-contamination pipette tip according to claim 5, characterized in that: The flat guide vane has an arc-shaped transition structure, and the flat guide vane and the gun head body are connected by the arc-shaped transition structure.

7. The anti-contamination pipette tip according to claim 2, characterized in that: The solution mixing structure is configured as a convex structure, and multiple convex structures are provided, which are evenly distributed on the inner wall of the gun head body.

8. The anti-contamination pipette tip according to claim 1, characterized in that: The length of the multiple layers of anti-pollution film gradually decreases in the direction away from the main body of the gun head, so that the multiple tear-off ends are arranged in a stepped manner.

9. The anti-contamination pipette tip according to claim 8, characterized in that: The tear-off end is provided with a tear-off rolled edge, which is formed by winding the anti-pollution film.

10. The anti-contamination pipette tip according to claim 1, characterized in that: The anti-pollution membrane has an elastic membrane structure.

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