CN203355755U

CN203355755U - Continuous pipetting device for pipette

Info

Publication number: CN203355755U
Application number: CN 201320411473
Authority: CN
Inventors: 吴渊虬
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-11
Filing date: 2013-07-11
Publication date: 2013-12-25
Anticipated expiration: 2023-07-11

Abstract

A continuous pipetting device for a pipette belongs to an apparatus for experimental analysis. The pipette comprises a pipette body, wherein a connector is arranged at one end of the pipette; a snapper is arranged at the other end of the pipette. The continuous pipetting device comprises an adapter, a first check valve, a liquid priming tube interface, a liquid priming tube and a second check valve, wherein an adapter liquid outlet is formed at one end of the adapter; the other end of the adapter is adapted to the connector; the first check valve is arranged inside the cavity of the adapter or is adapted to one end of the adapter at a position corresponding to the adapter liquid outlet; the liquid priming tube interface is formed on the outer wall of the adapter; the cavity of the liquid priming tube interface is communicated with the cavity of the adapter; one end of the liquid priming tube is adapted to the liquid priming tube interface; the other end of the liquid priming tube is a free end; the free end is introduced into a mother liquor container; and the second check valve, is arranged inside the cavity of the liquid priming tube interface, between the liquid priming tube interface and the liquid priming tube or inside the cavity of the liquid priming tube. The continuous pipetting device for the pipette is high in operating efficiency, can reduce the operating intensity and ensure the accuracy of an experimental analysis result, is wide in application range and high in adaptability, and can avoid deterioration caused by exposure of mother liquor.

Description

The continuous liquid-transfering device that pipettor is used

Technical field

The utility model belongs to experimental analysis utensil technical field, is specifically related to the continuous liquid-transfering device that a kind of pipettor is used.

Background technology

Pipettor is widely used in the occasion such as laboratory, laboratory, sample analysis chamber, and can be seen in disclosed Chinese patent literature, " the single track adjustable pipette " that typical " batch liquid-removing apparatus for chemical test " as Granted publication CN2068418U recommendation and CN202460662U provide, etc.

The disclosed pipettor of the patent that is not limited to exemplify above in use often moves liquid once needs imbibition once,, by the operator, pipettor is repeatedly moved between mother liquor container and test tube, so produce following drawback: the one, efficiency is low, for example, in the experiment sample amount under large situation, between mother liquor container and test tube, mobile pipettor can expend a large amount of time repeatedly, cause the experiment progress of whole batch to be affected, especially for the sample that requires to draw as early as possible experimental result, often produce the unfavorable factor that experiment lags; The 2nd, because needs frequently move between mother liquor container and test tube, thereby operator's manipulation strength is large; The 3rd, there is the anxiety to the mother liquor pollution, cause experiment analysis results inaccurate; The 4th, owing to being difficult to be applied to such as the genetic analysis field, thereby there is limitation.Because in moving the liquid process, from mother liquor, after imbitition, join in the test tube that contains DNA fragmentation, due to every operation once, the suction nozzle of pipettor all must contact once with mother liquor, yet, once the suction nozzle of pipettor touches the DNA fragmentation in test tube, so again to the DNA fragmentation in test tube being brought in the mother liquor in the mother liquor container during imbibition in mother liquor, cause mother liquor to pollute, and then can pollute all experiment samples, cause whole the failure of an experiment; The 5th, due to the frequent imbibition of needs, therefore the mother liquor container is usually in open state, so in moving the liquid process, because mother liquor is exposed in air for a long time, with the air Long contact time, can make the pH value of mother liquor change, once and the pH value of mother liquor change and can cause the result of all experiment samples inaccurate.

Shortcoming in view of above-mentioned prior art exists, be necessary to be improved, and for this reason, the applicant has done useful design, has finally formed technical scheme described below, and is taking to the experiment proved that it is practicable under strict secrecy provision.

Summary of the invention

Task of the present utility model be to provide a kind of contribute to significantly improve operating efficiency and use meet the numerous requirements of experiment sample and can obtain rapidly experimental result, be conducive to the mother liquor in the mother liquor container is transferred in numerous test tubes in a continuous manner and uses the manipulation strength that alleviates the operator, be of value to avoiding producing the mother liquor pollution is used to the accuracy that ensures experiment analysis results, have and be convenient to be applied to the harsh occasion of genetic analysis and so on and use and expand application and the mother liquor of being good at making in the mother liquor container is arranged and isolate from outer air and use the continuous liquid-transfering device of avoiding the deteriorated pipettor of mother liquor to use.

Task of the present utility model completes like this, the continuous liquid-transfering device that a kind of pipettor is used, described pipettor comprises the pipettor body, one end of this pipettor body has a joint, and the other end has the hand of pressing, described continuous liquid-transfering device comprises an adapter, and an end of this adapter forms an adapter fluid hole communicated with the adapter chamber of taking over, and the other end and the described joint taken over connect; One first check valve, this first check valve is arranged in described adapter chamber or in the position corresponding to taking over fluid hole and a described end of described adapter and connects; One liquid guiding tube interface and a liquid guiding tube, the liquid guiding tube interface directly extends and is formed on the outer wall of described adapter, and the liquid guiding tube hub cavity of this liquid guiding tube interface communicates with described adapter chamber, one end and the liquid guiding tube interface of liquid guiding tube connect, and the other end of liquid guiding tube forms free end, and this free end is introduced the mother liquor container under the use state; One second check valve, this second check valve is arranged in described liquid guiding tube hub cavity, is arranged between liquid guiding tube interface and liquid guiding tube or is arranged in the liquid guiding tube chamber of liquid guiding tube.

In a specific embodiment of the present utility model, in described adapter chamber and towards an end of described joint, be provided with a blocking solution plug.

In another specific embodiment of the present utility model, form on the chamber wall in described adapter chamber and in the position corresponding to described blocking solution plug a boss that is raised in the chamber wall is arranged, the blocking solution plug contacts with this boss.

In another specific embodiment of the present utility model, the blocking solution plug that described blocking solution plug is gas-permeable, liquid-impermeable.

In another specific embodiment of the present utility model, described liquid guiding tube is polyvinyl chloride pipe.

Also have a specific embodiment of the present utility model, described polyvinyl chloride pipe is the medical polyvinyl pipe.

More of the present utility model and in specific embodiment, the narrow contracting of a described end of described adapter and be configured to the shape of cone.

In of the present utility model and then specific embodiment, on the pipeline of described liquid guiding tube, be provided with flow regulator.

One of technique effect of the technical scheme that the utility model provides, due to press hand repeatedly by depress can be by the unlatching of the second check valve imbibition and by the unlatching of the first check valve fluid, thereby operating efficiency is high, can meet in time the rapid moving liquid requirement to numerous experiment samples, the time of obtaining experimental result with shortening; Two, because operator in moving the liquid process moves the pipettor body without samsara ground between mother liquor container and test tube, thereby can alleviate manipulation strength; Three, only be responsible for drawing mother liquor owing to taking over fluid hole, and liquid guiding tube only is responsible for introducing mother liquor, thereby can produce the pollution to mother liquor, thereby can guarantee the accuracy of experiment analysis results; Four, move liquid owing to can be suitable for the sample fragment such as DNA is analyzed the time, thereby application is wide, strong adaptability; Five, owing to the free end of liquid guiding tube can being connected with the mother liquor container of oral area sealing, thereby can avoid smooth revealing of mother liquor and the generation of bad change situation.

The accompanying drawing explanation

Fig. 1 is example structure figure of the present utility model.

Fig. 2 is the first application examples schematic diagram of the present utility model.

Fig. 3 is the second application examples schematic diagram of the present utility model.

The specific embodiment

For the auditor that the makes Patent Office especially public can be expressly understood technical spirit of the present utility model and beneficial effect more, the applicant general elaborates in the mode of embodiment below, but the description to embodiment is not all the restriction to the utility model scheme, any according to the utility model design, done only for pro forma but not substantial equivalent transformation all should be considered as the technical solution of the utility model category.

Embodiment 1:

Refer to Fig. 1, provided a pipettor body 1, this pipettor body 1 custom is called liquid-transfering gun, and an end of this pipettor body 1 forms a joint 11, and the other end is furnished with the hand of pressing 12.Because pipettor body 1 belongs to known technology, for example, with above mentioned notification number CN2068418U(batch liquid-removing apparatus for chemical test) structure basic identical, so the applicant no longer repeats it.

Provided an adapter 2 of the structural system that belongs to continuous liquid-transfering device, one end of this adapter 2 is that the right-hand member of location status shown in Fig. 1 offers an adapter fluid hole 22 communicated with the adapter chamber 21 of taking over 2, be that right-hand member and the aforementioned joint 11 of shown position state connects and take over 2 the other end, that is to say that joint 11 inserts in the adapter chamber 21 of taking over 2.

Preferably, form and have to connect a wall of the lumen fin 213 towards the Bi Shangyi interval, chamber of an end of joint 11 state in the adapter chamber 21 of taking over 2, ensure joint 11 and the effect that connects of taking over chamber 21 by this group connects wall of the lumen fin 213, avoid in use occurring a minute de-situation.

And then preferably, in taking over chamber 21 and insert a blocking solution plug 211 towards an end of joint 11, the blocking solution plug that this blocking solution plug 211 be gas-permeable, liquid-impermeable, stop adapter chamber 21 interior liquid to enter pipettor body 1 to play.Taking on the wall of 21 chamber, chamber and a boss 212 that is raised in the chamber wall surface is being arranged forming towards the position of a side of taking over fluid hole 22 corresponding to blocking solution plug 211, blocking solution plug 211 contacts with this boss 212, that is to say by 212 pairs of blocking solution plugs 211 of boss and limits.

As shown in Figure 1, an end of aforesaid adapter 2 is the narrow contracting of illustrated left end and be configured to the shape of cone.

Provided one first check valve 3, in the present embodiment, this first check valve 3 has been arranged in adapter chamber 21, the first check valve inlet 31 of this first check valve 3 is towards aforementioned blocking solution plug 211, and with taking over chamber 21, communicate, and the first check valve liquid outlet of the first check valve 3 communicates with aforesaid adapter fluid hole 22.

Provided a liquid guiding tube interface 4 and a liquid guiding tube 5, liquid guiding tube interface 4 directly is formed on the outer wall of taking over 2, and the liquid guiding tube hub cavity 41 of this liquid guiding tube interface 4 communicates with adapter chamber 21.As shown in Figure 1, the position of liquid guiding tube interface 4 in adapter 2 is between aforesaid the first check valve 3 and blocking solution plug 211, and preferred and adapter 2 formation vertical relations.One end of liquid guiding tube 5 is that the lower end of location status shown in Fig. 1 connects with liquid guiding tube interface 4 by the second check valve 6, and the other end of liquid guiding tube 5 forms free end, and this free end is introduced by the mother liquor container 7 shown in Fig. 2 and Fig. 3 under the use state, and the liquid guiding tube chamber 51 of liquid guiding tube 5 communicates with liquid guiding tube hub cavity 41 through the second check valve 6.

Preferably, serve as liquid guiding tube 5 by medical poisonless grade PVC pipe.

Please continue to see Fig. 1, in the present embodiment, top the second check valve 6 of having mentioned has been arranged between liquid guiding tube interface 4 and liquid guiding tube 5, particularly, the second check valve 6 is connected with liquid guiding tube interface 4, the second check valve liquid outlet of the second check valve 6 communicates with liquid guiding tube hub cavity 41, and the second check valve inlet 61 of the second check valve 6 connects with an aforesaid end of liquid guiding tube 5, that is to say an end and the second check valve inlet 61 insertings (peg graft and coordinate) of liquid guiding tube 5.

At aforesaid the second check valve 6, open and during imbibition, the first check valve 3 is closed, otherwise, with example,, when the first check valve 3 fluid, the second check valve 6 is closed.

Preferably, flow regulator 52(Fig. 2 and Fig. 3 are set on the pipeline of aforesaid liquid guiding tube 5 and show), control liquid guiding tube 5 by flow regulator 52 and whether draw liquid, or control the size of drawing liquid measure of liquid guiding tube 5.

Embodiment 2:

Figure slightly, the left end end that is location status shown in Fig. 1 by the first check valve 3 and an aforementioned end of taking over 2 connects, under this state, the first check valve inlet 31 of the first check valve 3 communicates with aforesaid adapter fluid hole 22, insert the liquid into the first check valve inlet 31 by taking over fluid hole 22, and directly inserted the liquid in the test tube 8 by Fig. 2 and Fig. 3 signal by the first check valve liquid outlet of the first check valve 3.Hence one can see that, no matter the first check valve 3 is arranged at, takes over chamber 21 interior (embodiment 1) or the first check valve 3 is connected at the position (the present embodiment) of the adapter fluid hole 22 of adapter 2, all should belong to the technical solution of the utility model category.All the other are all with the description to embodiment 1.

Embodiment 3:

Figure slightly, is arranged on the second check valve 6 in the liquid guiding tube hub cavity 41 of aforesaid liquid guiding tube interface 4, under this state, a described end (lower end shown in Fig. 1) of aforementioned liquid guiding tube 5 directly and liquid guiding tube interface 4 connect.All the other are all with the description to embodiment 1.

Embodiment 4:

Figure slightly, is arranged on the second check valve 6 in the liquid guiding tube chamber 51 of liquid guiding tube 5.All the other are all with the description to embodiment 1.

From embodiment 1, embodiment 3 and embodiment 4, because the setting position of the second check valve 6 has three kinds, thereby confirmed the second check valve 6 that the applicant mentions in the above, be arranged in liquid guiding tube hub cavity 41, be arranged between liquid guiding tube interface 4 and liquid guiding tube 5 or be arranged on the liquid guiding tube chamber 51 interior statement of liquid guiding tube 5.Therefore, can not form restriction to protection domain of the present utility model with the change in location of the second check valve 6.

Application examples 1:

Refer to Fig. 2 and in conjunction with Fig. 1, illustrated the mother liquor container 7 of being furnished with mother liquor of having mentioned above in Fig. 2, because the structure of the continuous liquid-transfering device of the utility model has reasonability, therefore is furnished with a gag 71 on mother liquor container 7, is furnished with a breather pipe 711 on gag 71, the described other end of aforementioned liquid guiding tube 5 is that aforesaid free end is being stretched over mother liquor container 7(as mother liquid multi-cavity bottle after gag 71) the bottom of cavity volume, thereby guarantee the state of mother liquor in being isolated from the outside in mother liquor container 7.Also show the test tube 8 be arranged on rack for test tube 81 in Fig. 2.

Fill the sample fragment and for example fill the test tube 8 of DNA sample fragment when interior when the mother liquor in mother liquor container 7 being injected, as long as the operator rhythm and pace of moving things is arranged presses and presses hand 12 so, and pipettor body 1 is moved to another test tube 8 from a test tube 8, when pressing hand 12 and pressing, the first check valve 3 is opened, the second check valve 6 is closed, otherwise with example, thereby introduce mother liquor by taking over fluid hole 22 to the test tube 8 according to needing quantity.

Application examples 2:

Refer to Fig. 3 and in conjunction with Fig. 1, difference between this Fig. 3 and Fig. 2 is that the second check valve 6 has been arranged on the pipeline of liquid guiding tube 5, can certainly be arranged in the liquid guiding tube chamber 51 of liquid guiding tube 5 by the description of embodiment 4, all the other are all with the description to application examples 1.

In sum, the technical scheme that the utility model provides has overcome the deficiency in the prior art, has completed the invention task, has embodied the technique effect described in the superincumbent technique effect of applicant hurdle.

Claims

1. the continuous liquid-transfering device that a kind of pipettor is used, described pipettor comprises pipettor body (1), one end of this pipettor body (1) has a joint (11), and the other end has the hand of pressing (12), it is characterized in that described continuous liquid-transfering device comprises an adapter (2), one end of this adapter (2) forms an adapter fluid hole (22) communicated with the adapter chamber (21) of adapter (2), and the other end and the described joint (11) of taking over (2) connect; One first check valve (3), this first check valve (3) is arranged in described adapter chamber (21) or in the position corresponding to taking over fluid hole (22) and a described end of described adapter (2) and connects; One liquid guiding tube interface (4) and a liquid guiding tube (5), liquid guiding tube interface (4) directly extends and is formed on the outer wall of described adapter (2), and the liquid guiding tube hub cavity (41) of this liquid guiding tube interface (4) communicates with described adapter chamber (21), one end of liquid guiding tube (5) and liquid guiding tube interface (4) connect, and the other end of liquid guiding tube (5) forms free end, and this free end is introduced the mother liquor container under the use state; One second check valve (6), this second check valve (6) is arranged in described liquid guiding tube hub cavity (41), is arranged between liquid guiding tube interface (4) and liquid guiding tube (5) or is arranged in the liquid guiding tube chamber (51) of liquid guiding tube (5).

2. the continuous liquid-transfering device that pipettor according to claim 1 is used, is characterized in that in described adapter chamber (21) and be provided with a blocking solution plug (211) towards an end of described joint (11).

3. the continuous liquid-transfering device that pipettor according to claim 2 is used, it is characterized in that on the chamber wall in described adapter chamber (21) and form in the position corresponding to described blocking solution plug (211) that a boss (212) that is raised in the chamber wall is arranged, blocking solution plug (211) contacts with this boss (212).

4. the continuous liquid-transfering device of using according to the described pipettor of claim 2 or 3, is characterized in that described blocking solution plug (211) is for the blocking solution plug of gas-permeable, liquid-impermeable.

5. the continuous liquid-transfering device that pipettor according to claim 1 is used, is characterized in that described liquid guiding tube (5) is polyvinyl chloride pipe.

6. the continuous liquid-transfering device that pipettor according to claim 5 is used, is characterized in that described polyvinyl chloride pipe is the medical polyvinyl pipe.

7. the continuous liquid-transfering device that pipettor according to claim 1 is used, is characterized in that the narrow contracting of a described end of described adapter (2) and be configured to the shape of cone.

8. the continuous liquid-transfering device that according to claim 1 or 5, pipettor is used, is characterized in that being provided with flow regulator (52) on the pipeline of described liquid guiding tube (5).