CN215087255U - Novel pipettor rifle head - Google Patents
Novel pipettor rifle head Download PDFInfo
- Publication number
- CN215087255U CN215087255U CN202120545497.0U CN202120545497U CN215087255U CN 215087255 U CN215087255 U CN 215087255U CN 202120545497 U CN202120545497 U CN 202120545497U CN 215087255 U CN215087255 U CN 215087255U
- Authority
- CN
- China
- Prior art keywords
- filter core
- suction nozzle
- nozzle insertion
- ring groove
- mounting ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 238000003780 insertion Methods 0.000 claims abstract description 22
- 230000037431 insertion Effects 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 11
- -1 polyethylene Polymers 0.000 claims description 8
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- 239000000443 aerosol Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000005213 imbibition Methods 0.000 description 2
- 208000015181 infectious disease Diseases 0.000 description 2
- 230000002458 infectious effect Effects 0.000 description 2
- 150000007523 nucleic acids Chemical class 0.000 description 2
- 102000039446 nucleic acids Human genes 0.000 description 2
- 108020004707 nucleic acids Proteins 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000004166 bioassay Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Abstract
The utility model discloses a novel pipettor gun head, the gun head from top to bottom in proper order be elasticity suction nozzle insertion portion and liquid storage portion, still include annular water bag, filter core mounting ring groove and filter core, the inner wall of elasticity suction nozzle insertion portion on be provided with an annular water bag at least, the central point of juncture of elasticity suction nozzle insertion portion and liquid storage portion put and be provided with filter core mounting ring groove, the inner wall of elasticity suction nozzle insertion portion and filter core mounting ring groove set up with each other at an interval; filter core fixed mounting in filter core installation annular, the filter core in doped with and met water color-changing material. The utility model discloses a rifle head can guarantee with pipettor erection joint's fastness, can observe whether the colour of filter core changes and confirms that the rifle head symbol is not conform to operation requirement in the use.
Description
Technical Field
The utility model belongs to the technical field of biological assay apparatus, especially, relate to a novel pipettor rifle head.
Background
Pipettes are often used in biological laboratories and are one of the indispensable tools for experiments. Laboratory personnel who frequently use pipettes often encounter several problems: 1. when the gun head is replaced, the elastic suction nozzle of the pipettor needs to be inserted into the gun head and then knocked down for several times to fix the gun head stably; 2. poor liquid suction effect is caused by poor sealing performance of the gun head and the elastic suction nozzle; 3. the purchased new batch of pipette heads need to absorb ink with the maximum range to verify whether a filter element of the pipette heads is stained with ink, which is a main index for verifying the quality of the pipette heads, because most of liquid absorbed in actual experimental operation is pure and transparent aqueous solution, the existing pipette heads containing the filter elements only have air filtering performance and cannot display whether the filter elements are stained with liquid in the liquid absorbing pipette process, once the filter elements are stained with liquid, the actual liquid adding amount of the pipette is insufficient, especially for weak positive samples, the accuracy of the liquid adding amount directly influences experimental detection results, and if the liquid soaking amount is excessive, especially liquid completely permeates a filter layer, aerosol generated by the liquid adding device is easy to cause pollution of nucleic acid or infectious substances of the pipette; 4. the gun head is not provided with scales, and the liquid suction quantity of the liquid suction device can not be estimated after liquid suction to meet the requirement.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the not enough of above-mentioned prior art, invented a novel pipettor rifle head.
In order to achieve the above object, the utility model adopts the following technical scheme:
a novel pipette tip is characterized in that the tip sequentially comprises an elastic suction nozzle insertion part and a liquid storage part from top to bottom, and further comprises an annular water bag, a filter element mounting ring groove and a filter element, wherein at least one annular water bag is arranged on the inner wall of the elastic suction nozzle insertion part, the filter element mounting ring groove is formed in the center of the junction of the elastic suction nozzle insertion part and the liquid storage part, and the filter element mounting ring groove and the inner wall of the elastic suction nozzle insertion part are arranged at intervals; filter core fixed mounting in filter core installation annular, the filter core in doped with and met water color-changing material.
The utility model discloses a rifle head can guarantee with pipettor erection joint's fastness, can observe whether the colour of filter core changes and confirms that the rifle head symbol is not conform to operation requirement in the use.
Furthermore, the water color-changing material is polyethylene or polytetrafluoroethylene, and the polyethylene or polytetrafluoroethylene has stable chemical properties and cannot react with an experimental sample or influence the experimental effect.
Furthermore, the annular water bag is broken by extrusion, the annular water bag is made of a thin-wall material, distilled water is filled in the annular water bag, the thin wall is broken when the annular water bag is extruded by force, water flows out to fill the gap between the inside of the insertion part and the elastic suction head, and the sealing effect is realized.
Furthermore, the annular water bag is arranged on the upper part of the inner wall of the insertion part of the elastic suction nozzle, so that the annular water bag can be rapidly sealed from top to bottom after being broken, and water is prevented from splashing on the filter element.
Furthermore, the liquid storage part is provided with scales, so that the liquid washing amount of the liquid transfer device can be observed conveniently.
The utility model has the advantages that: the utility model discloses a rifle head has and is connected characteristics such as simple, firm, leakproofness good with the elasticity suction nozzle, and whether can also the direct observation imbibition volume too much, avoid liquid to permeate the filter core completely and produce aerosol and easily lead to pipettor nucleic acid or infectious material to pollute, also can know the imbibition volume through observing the scale simultaneously.
Drawings
Fig. 1 is a sectional structure diagram of a novel pipette tip of the present invention;
fig. 2 is a front view of the novel pipette tip of the present invention.
Detailed Description
The present invention is described in detail below with reference to the accompanying drawings:
in the description of the present invention, it should be noted that the directions or positional relationships indicated by "upper" and "lower" are the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the indicated device or element must have a specific direction and a specific direction configuration and operation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1-2, the novel pipette tip is a conical pipette tip with a large top and a small bottom, and the pipette tip sequentially comprises an elastic suction nozzle insertion part 1 and a liquid storage part 2 from top to bottom, wherein the elastic suction nozzle insertion part 1 and the liquid storage part 2 are integrally formed. The gun head is also provided with an annular water bag 3, a filter element mounting ring groove 4 and a filter element 5, and the inner wall of the elastic suction nozzle insertion part 1 is provided with the annular water bag 3. The annular water bag 3 is provided on the upper portion of the inner wall of the elastic suction nozzle insertion part 1 so that the upper portion (upper half portion of the elastic suction nozzle) thereof comes into contact with the annular water bag 3 to generate a pressing force when the front end of the elastic suction nozzle is inserted into the bottom. The annular water bag 3 is made of thin-wall materials such as thin films and thin plastics, water is filled in the annular water bag, the annular water bag 3 can be broken when being stressed and extruded, the water in the annular water bag can flow out to fill the gap between the elastic suction head and the inner wall of the elastic suction head inserting part 1, tight sealing connection is realized, and the gun head and the elastic suction head can be tightly adsorbed together under the adsorption effect of the water. A filter element mounting ring groove 4 is formed in the center of the junction of the elastic suction nozzle insertion part 1 and the liquid storage part 2, the filter element mounting ring groove 4 and the inner wall of the elastic suction nozzle insertion part 1 are arranged at intervals, and a space between the filter element mounting ring groove 4 and the inner wall of the elastic suction nozzle insertion part 1 is used for storing water flowing to the bottom of the elastic suction nozzle insertion part 1 after the annular water bag 3 is broken so as to avoid contacting with the filter element 5; when the elastic suction head is inserted, the front end surface of the elastic suction head can be contacted with the top of the filter element mounting ring groove 4, so that extrusion sealing is realized. The filter element 5 is fixedly arranged in the filter element mounting ring groove 4, and the bottom surface of the filter element 5 is directly fixed through glue; the filter element 5 is doped with a water-encountering color-changing material, for example, the doped water-encountering color-changing material is polyethylene or polytetrafluoroethylene, and the two materials have stable chemical properties, cannot react with an experimental sample or a reagent, and can obviously observe color change.
In order to observe the amount of pipette, the reservoir 2 is provided with scales, such as 10. mu.l pipette marks 1. mu.l, 5. mu.l and 10. mu.l scales, 200. mu.l pipette marks 20. mu.l, 100. mu.l and 200. mu.l scales, and 1000. mu.l pipette marks 100. mu.l (or 200. mu.l), 500. mu.l and 1000. mu.l scales.
Although particular embodiments of the present invention have been described and illustrated in detail, it should be noted that various changes and modifications could be made to the above-described embodiments without departing from the spirit of the invention and the scope of the appended claims.
Claims (5)
1. A novel pipette tip is characterized by further comprising an annular water bag (3), a filter element mounting ring groove (4) and a filter element (5), wherein the inner wall of the elastic suction nozzle insertion part (1) is at least provided with the annular water bag (3), the center of the junction of the elastic suction nozzle insertion part (1) and the liquid storage part (2) is provided with the filter element mounting ring groove (4), and the filter element mounting ring groove (4) and the inner wall of the elastic suction nozzle insertion part (1) are arranged at intervals; filter core (5) fixed mounting in filter core mounting ring groove (4), filter core (5) in be doped with and meet water color-changing material.
2. A novel pipette tip according to claim 1, characterised in that the water-colour-changing material is polyethylene or polytetrafluoroethylene.
3. A novel pipette tip according to claim 1 or 2, characterized in that the annular water bag (3) is ruptured by squeezing.
4. A novel pipette tip according to claim 3, characterised in that the annular water bag (3) is arranged on the upper part of the inner wall of the elastic suction nozzle insertion part (1).
5. A novel pipette tip according to claim 3, characterised in that the reservoir (2) is provided with a scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120545497.0U CN215087255U (en) | 2021-03-17 | 2021-03-17 | Novel pipettor rifle head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120545497.0U CN215087255U (en) | 2021-03-17 | 2021-03-17 | Novel pipettor rifle head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215087255U true CN215087255U (en) | 2021-12-10 |
Family
ID=79343820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120545497.0U Expired - Fee Related CN215087255U (en) | 2021-03-17 | 2021-03-17 | Novel pipettor rifle head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215087255U (en) |
-
2021
- 2021-03-17 CN CN202120545497.0U patent/CN215087255U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211210 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |